santo gantry crane
2014年1月16日星期四
Three-dimensional hoist crane system of automatic control experiment
Overhead crane load capacity, flexible Steel
crane, in the industrial and transport fields have a wide range of applications . However, the overhead crane is a typical nonlinear , strong coupling, due to the drive system to achieve efficient control of its security is facing many difficulties , therefore , control of such systems has become a hot topic. Various crane control methods proposed in recent years , such as sliding mode control, adaptive control , although theoretically possible , but taking into account nonlinear interference and coupling phenomena that exist in the actual system , its usefulness remains to be tested. Experimental methods have become characteristic analysis system , controller design, stability verification indispensable technology tools. For these reasons , we designed and developed a three-dimensional overhead crane system is automatically controlled experiment , in order to verify the relevant control strategies implemented to provide a great hoist crane . The system can not only simulate the actual operation of the real good cable car system , and is very easy to test a variety of control algorithms and adjustments. In order to verify the reliability of the experimental system , the number of species on the overhead crane control method is applied to the experimental system , the experimental results are consistent with the theoretical analysis of the original documents , which illustrate the effectiveness of the system。
2013年9月8日星期日
Manual single girder suspension crane what role?
With the market for its increasing emphasis on the development of the machinery industry, for machinery production operations are also getting support, in order to better reflect the effect of the operation of machinery and equipment, already on the market developed more products, each product is new machinery and equipment products are designed to be able to make a better mechanical equipment operating personnel to assist them so that their work can also reduce the burden, so that manual single girder suspension
hoist crane is better , then it is mainly what role?
1 speed
Today on manual single girder suspension crane operation speed of the process is relatively fast, on this point who used such products people are such a kind of feedback, indicating that the current manual single girder suspension overhead bridge crane is better quality , and has an excellent performance, which is more satisfactory place, so in the course of its operation is often the faster, the faster the product is the more promising, so that it is are more useful.
2 Simple operation
Today in the market manual single girder suspension crane is a mechanical device more popular products, because when the operator when used in its feeling is very simple, because it is relatively simple to operate, there is nothing complex functions , not too professional, most people will use it.
This is the manual single girder suspension bridge gantry crane in the market, the role played.
1 speed
Today on manual single girder suspension crane operation speed of the process is relatively fast, on this point who used such products people are such a kind of feedback, indicating that the current manual single girder suspension overhead bridge crane is better quality , and has an excellent performance, which is more satisfactory place, so in the course of its operation is often the faster, the faster the product is the more promising, so that it is are more useful.
2 Simple operation
Today in the market manual single girder suspension crane is a mechanical device more popular products, because when the operator when used in its feeling is very simple, because it is relatively simple to operate, there is nothing complex functions , not too professional, most people will use it.
This is the manual single girder suspension bridge gantry crane in the market, the role played.
The market for the development of electric crane hoisted What?
Nowadays there are many products on the market is relatively good, because every product on the market developments are relatively hard, and more efforts to develop products on the market the more attractive, so its production the process of the electric overhead traveling
hoist crane is more optimistic, and now on the market for electric overhead crane is more concerned about the development, and even some of the machinery is quite confident of its business, and I hope it is getting better and better development, so now on the market for its analysis of the development of electric crane hoisted What are the main?
1 Talent
Today, when the manufacturers in their production of electric overhead crane when the most important thing is to rely on the power of talent condensed because of the strength of cohesion is relatively large, a development of enterprises in the process of talent is the most need to have the If no talent then the company or the manufacturer of the product is difficult to produce, which explains professionals or the use of an electric hoist gantry crane , but in the selection process of the professionals is the need cautious.
(2) Equipment
When the electric overhead traveling crane manufacturers in the process of its production equipment is often more crucial thing, because electric crane hoisted on the market is a kind of relatively easy to use products, so for the time of its production equipment is relatively there is a demand.
This is the market for the development of electric eot crane hoisted the approximate analysis done.
1 Talent
Today, when the manufacturers in their production of electric overhead crane when the most important thing is to rely on the power of talent condensed because of the strength of cohesion is relatively large, a development of enterprises in the process of talent is the most need to have the If no talent then the company or the manufacturer of the product is difficult to produce, which explains professionals or the use of an electric hoist gantry crane , but in the selection process of the professionals is the need cautious.
(2) Equipment
When the electric overhead traveling crane manufacturers in the process of its production equipment is often more crucial thing, because electric crane hoisted on the market is a kind of relatively easy to use products, so for the time of its production equipment is relatively there is a demand.
This is the market for the development of electric eot crane hoisted the approximate analysis done.
2013年9月6日星期五
Trolley drive mechanism type
Self-propelled trolley run institutions, each with a small car with four wheels, half based on.Steel crane Its rotation types are divided into two categories, namely with open gears and gear are all closed.
Start gear
Open running gear mechanism enclosed in high-level phase shell inside, oil bath lubrication; using low-grade open gear. Made ring style open gear and the wheel together with the wheel center around a fixed axis. This drive type, can meet the requirements of heavy working conditions, with sufficient reliability, the disadvantage is inconvenient handling wheels overhaul.
Open gear drives the biggest drawback is badly worn, so general-purpose trolley overhead bridge crane operating agencies, mostly with closed gear type.
Enclosed gear drives
Arranged between the two intermediate gear wheels, the drive shaft of the torque by the smaller axis of each side of the shaft torque of the torque gear half. Reducer output shaft to the wheel between the use of semi-floating shaft gear couplings and coupling (two floating shaft can grow, you can also unequal length), or a full-tooth couplings and a floating shaft coupling. The advantage of this type is to allow the installation of large deviations, easy installation, good handling grouping. From the weight of more than 10 tons of overhead hoist crane are using this type of car. This type of drawback is due to the large wheel bearings and couplings, operating mechanism becomes complicated and bulky, resulting in higher costs.
Start gear
Open running gear mechanism enclosed in high-level phase shell inside, oil bath lubrication; using low-grade open gear. Made ring style open gear and the wheel together with the wheel center around a fixed axis. This drive type, can meet the requirements of heavy working conditions, with sufficient reliability, the disadvantage is inconvenient handling wheels overhaul.
Open gear drives the biggest drawback is badly worn, so general-purpose trolley overhead bridge crane operating agencies, mostly with closed gear type.
Enclosed gear drives
Arranged between the two intermediate gear wheels, the drive shaft of the torque by the smaller axis of each side of the shaft torque of the torque gear half. Reducer output shaft to the wheel between the use of semi-floating shaft gear couplings and coupling (two floating shaft can grow, you can also unequal length), or a full-tooth couplings and a floating shaft coupling. The advantage of this type is to allow the installation of large deviations, easy installation, good handling grouping. From the weight of more than 10 tons of overhead hoist crane are using this type of car. This type of drawback is due to the large wheel bearings and couplings, operating mechanism becomes complicated and bulky, resulting in higher costs.
2013年8月30日星期五
Lifting Mo as "Sky Crawlers"
in the city to carry out a comprehensive building site "Hundred Days Campaign" when BMCC construction quality supervision station on Monday and start another one easily overlooked "Air killer" - building site construction crane hanging machinery monitoring and inspectors.hoist gantry crane So far, the city's more than 30 equipment rental, installation companies and lifting all construction facilities from now until the end of January next year, will be monitored as a key object of special inspectors.
According to reports, the recent construction site supervision and inspection of lifting equipment was found in breaches:hoist crane Partial demolition companies in the "Hefei Construction tower crane safety management manual" (people and goods elevators) installation acceptance, maintenance, fill in the non-standard data fill ambiguous; special equipment operating certificate, some companies still hold false workers induction phenomenon ...... in response,jib crane the station will be in the future supervision and inspection to increase penalties for operating workers doesn document type requirements for demolition phenomenon, suggested issuing agency revoked qualification certificate.
According to reports, the recent construction site supervision and inspection of lifting equipment was found in breaches:hoist crane Partial demolition companies in the "Hefei Construction tower crane safety management manual" (people and goods elevators) installation acceptance, maintenance, fill in the non-standard data fill ambiguous; special equipment operating certificate, some companies still hold false workers induction phenomenon ...... in response,jib crane the station will be in the future supervision and inspection to increase penalties for operating workers doesn document type requirements for demolition phenomenon, suggested issuing agency revoked qualification certificate.
Crane wire rope maintenance
Crane wire rope safe life largely depends on the quality of maintenance,hoist crane so the correct use and maintenance of wire rope is an important task. General should:
1, the rope is packaged into a disk factory, open the original volume wire rope, according to the correct method, shall not cause distortions or kinks.
2, wire cutting, there should be measures to prevent the spread strand.
3, installation wire rope should not drag in unclean places, nor should it around in its object, should prevent stroke, grinding, crushing and excessive bending.
4, the rope should be kept well lubricated condition. Lubrication at least twice a month.overhead bridge crane First with a wire brush to the rope on the dirt and cleaned with kerosene, then heated to above 80 ℃ oil immersion rope, cord dipped in the lubricant. Lubrication should pay special attention not easy to see and difficult to access areas, such as balancing on a rope.
5, the daily use of the rope should be checked every day, including the end portion of fixed connection, the pulley at the balance check and security make judgments.
6, to receive wire rope, wire rope must check the certificate, in order to ensure the mechanical properties,Steel crane with the original design specifications consistent with the provisions of the rope.
7, the rope should prevent damage, corrosion, or other physical reasons, chemical causes of performance degradation.
1, the rope is packaged into a disk factory, open the original volume wire rope, according to the correct method, shall not cause distortions or kinks.
2, wire cutting, there should be measures to prevent the spread strand.
3, installation wire rope should not drag in unclean places, nor should it around in its object, should prevent stroke, grinding, crushing and excessive bending.
4, the rope should be kept well lubricated condition. Lubrication at least twice a month.overhead bridge crane First with a wire brush to the rope on the dirt and cleaned with kerosene, then heated to above 80 ℃ oil immersion rope, cord dipped in the lubricant. Lubrication should pay special attention not easy to see and difficult to access areas, such as balancing on a rope.
5, the daily use of the rope should be checked every day, including the end portion of fixed connection, the pulley at the balance check and security make judgments.
6, to receive wire rope, wire rope must check the certificate, in order to ensure the mechanical properties,Steel crane with the original design specifications consistent with the provisions of the rope.
7, the rope should prevent damage, corrosion, or other physical reasons, chemical causes of performance degradation.
2013年8月29日星期四
"Large crane install security monitoring and management system implementation plan" ( 2 )
Fourth, the main work steps and content
( A ) organizing the investigation , find out the base . First half of 2011 by the State Administration of Quality Supervision Organization in the provincial quality supervision department of a large bridge gantry crane with a survey has been conducted to find out the number with a large crane , security monitoring devices or systems , as well as large-scale lifting machinery manufacturing and so on.
( Two ) to carry out preliminary pilot , explore the experience . To the end of the first half of 2011 , select some key sectors ( areas ) of some key equipment to carry out preliminary pilot , demonstration and standards for the trial to provide basic data and experience.
1 . Preliminary scope of the pilot : first in railway construction , road construction , power station construction, and shipbuilding industries using more than 200 tons and erecting machine ,eot crane 200 tons and above universal gantry cranes, 320 tons and above, shipbuilding gantry cranes, 60 tons and above ports , shipyards , power plants and portal cranes , 2000 t m and above normal , power tower cranes, crawler cranes 450 tons and above , fixed , swing -style, pan , Radiant cranes of thirteen varieties pilot.
2 . Pilot Contents: quality supervision department in conjunction with the safety supervision department and other relevant departments on the production and use of the identified units of each selection 1-2 sets new manufacturing and 1-2 sets in with a large crane , installed on one machine safety monitoring and management system , By monitoring , control, management and other means , to achieve safe operation control , dangerous critical alarm , on-site real-time display and data record keeping and other functions, while the use of video and audio technology to achieve real-time display and recording status , after the playback effect. On this basis , in conditional units work according to the specific circumstances and needs , and further remote transmission, remote monitoring, remote management, remote services, data , video and audio queries, data, video and audio statistics and analysis functions gradually build things based technologies crane safety monitoring and management of local and remote monitoring platform monitoring platform [WY1].
( Three ) the development of standards , test verification . First half of 2011 to the end of the relevant standard committee coordinating organization for scientific research, design , manufacture, use , inspection , and other units to develop and report security monitoring and management system with national standards. Meanwhile, the combination of pre- trial , organizations related to type testing agencies already " hoist gantry crane safety monitoring and management system " to carry out experimental verification.
( Four ) consolidate our achievements , to expand the pilot . 2012-2013 , summed preliminary experimental work, expand the scope .
1.2012 , the pair of large lifting machinery, production and use of all units in the unit at least one corresponding to each species of large crane install security monitoring and management system , consolidate and promote the early experimental results.
2.2013 years , and gradually in all newly manufactured large lifting machinery installed all security monitoring and management system .
( Five ) full forward, to achieve tangible results . 2014 to 2015 , and intensified efforts , the full implementation of this work to achieve standardization, normalization .
1 . Starting in 2014 , all in a large crane with a full installation on security monitoring and management system .
2.2015 at the end , have not installed security monitoring and management system of large lifting machinery, will not be used.
Fifth, work requirements
( A ) to strengthen their leadership and responsibility . Local quality supervision , safety supervision and relevant departments should strengthen leadership , and assign responsibilities . Local quality supervision departments to combine the actual situation, formulate practical program of work to strengthen coordination and cooperation with relevant departments , while strengthening the help of pilot enterprises , supervision and guidance of research to develop the necessary incentive and restraint measures , a strong impetus to this term work.
( Two ) focused and strengthened. Local quality supervision , safety supervision and relevant departments to guide and supervise the production and use units to develop security monitoring and management system procedures, enhance operator training, improve skills , standardized field use management, and improving the level of protection and security infrastructure 's ability to prevent accidents , in accordance with the requirements of stage work , timely completion of large lifting machinery installed security monitoring and management system tasks.
( Three ) to strengthen the linkage , and strengthen supervision . Local quality supervision , safety supervision departments should unite and collaborate closely with , and vigorously promote the orderly conduct of this work . To actively seek relevant policies to encourage the production and use of units to strengthen the monitoring of daily supervision , to take inspection, sampling inspection, mutual inspection , etc., on a large hoist crane mounted security monitoring and management system were carried out step by step inspection, identify problems and timely coordination solution . To work around promptly reported to the State Administration of Quality Supervision and the State Administration of Work Safety . AQSIQ and the State Administration of Work Safety will be based on the progress of work with the relevant departments to conduct supervision and inspection.
( Four ) wide publicity to create atmosphere . Local quality supervision , safety supervision departments should strengthen the publicity work in various forms , improve production , and use of , and management , engineering and technical personnel and knowledge of the workers , and fully mobilize their enthusiasm ; want to play to industry associations, societies, research institutes , inspection agencies in technology promotion and other aspects of the service , and improve the quality of work and level ; in the implementation process , pay attention to summing up the work , promotion of advanced models , demonstration and guidance , to promote the work for the orderly conduct of good work to form a good atmosphere.
( A ) organizing the investigation , find out the base . First half of 2011 by the State Administration of Quality Supervision Organization in the provincial quality supervision department of a large bridge gantry crane with a survey has been conducted to find out the number with a large crane , security monitoring devices or systems , as well as large-scale lifting machinery manufacturing and so on.
( Two ) to carry out preliminary pilot , explore the experience . To the end of the first half of 2011 , select some key sectors ( areas ) of some key equipment to carry out preliminary pilot , demonstration and standards for the trial to provide basic data and experience.
1 . Preliminary scope of the pilot : first in railway construction , road construction , power station construction, and shipbuilding industries using more than 200 tons and erecting machine ,eot crane 200 tons and above universal gantry cranes, 320 tons and above, shipbuilding gantry cranes, 60 tons and above ports , shipyards , power plants and portal cranes , 2000 t m and above normal , power tower cranes, crawler cranes 450 tons and above , fixed , swing -style, pan , Radiant cranes of thirteen varieties pilot.
2 . Pilot Contents: quality supervision department in conjunction with the safety supervision department and other relevant departments on the production and use of the identified units of each selection 1-2 sets new manufacturing and 1-2 sets in with a large crane , installed on one machine safety monitoring and management system , By monitoring , control, management and other means , to achieve safe operation control , dangerous critical alarm , on-site real-time display and data record keeping and other functions, while the use of video and audio technology to achieve real-time display and recording status , after the playback effect. On this basis , in conditional units work according to the specific circumstances and needs , and further remote transmission, remote monitoring, remote management, remote services, data , video and audio queries, data, video and audio statistics and analysis functions gradually build things based technologies crane safety monitoring and management of local and remote monitoring platform monitoring platform [WY1].
( Three ) the development of standards , test verification . First half of 2011 to the end of the relevant standard committee coordinating organization for scientific research, design , manufacture, use , inspection , and other units to develop and report security monitoring and management system with national standards. Meanwhile, the combination of pre- trial , organizations related to type testing agencies already " hoist gantry crane safety monitoring and management system " to carry out experimental verification.
( Four ) consolidate our achievements , to expand the pilot . 2012-2013 , summed preliminary experimental work, expand the scope .
1.2012 , the pair of large lifting machinery, production and use of all units in the unit at least one corresponding to each species of large crane install security monitoring and management system , consolidate and promote the early experimental results.
2.2013 years , and gradually in all newly manufactured large lifting machinery installed all security monitoring and management system .
( Five ) full forward, to achieve tangible results . 2014 to 2015 , and intensified efforts , the full implementation of this work to achieve standardization, normalization .
1 . Starting in 2014 , all in a large crane with a full installation on security monitoring and management system .
2.2015 at the end , have not installed security monitoring and management system of large lifting machinery, will not be used.
Fifth, work requirements
( A ) to strengthen their leadership and responsibility . Local quality supervision , safety supervision and relevant departments should strengthen leadership , and assign responsibilities . Local quality supervision departments to combine the actual situation, formulate practical program of work to strengthen coordination and cooperation with relevant departments , while strengthening the help of pilot enterprises , supervision and guidance of research to develop the necessary incentive and restraint measures , a strong impetus to this term work.
( Two ) focused and strengthened. Local quality supervision , safety supervision and relevant departments to guide and supervise the production and use units to develop security monitoring and management system procedures, enhance operator training, improve skills , standardized field use management, and improving the level of protection and security infrastructure 's ability to prevent accidents , in accordance with the requirements of stage work , timely completion of large lifting machinery installed security monitoring and management system tasks.
( Three ) to strengthen the linkage , and strengthen supervision . Local quality supervision , safety supervision departments should unite and collaborate closely with , and vigorously promote the orderly conduct of this work . To actively seek relevant policies to encourage the production and use of units to strengthen the monitoring of daily supervision , to take inspection, sampling inspection, mutual inspection , etc., on a large hoist crane mounted security monitoring and management system were carried out step by step inspection, identify problems and timely coordination solution . To work around promptly reported to the State Administration of Quality Supervision and the State Administration of Work Safety . AQSIQ and the State Administration of Work Safety will be based on the progress of work with the relevant departments to conduct supervision and inspection.
( Four ) wide publicity to create atmosphere . Local quality supervision , safety supervision departments should strengthen the publicity work in various forms , improve production , and use of , and management , engineering and technical personnel and knowledge of the workers , and fully mobilize their enthusiasm ; want to play to industry associations, societies, research institutes , inspection agencies in technology promotion and other aspects of the service , and improve the quality of work and level ; in the implementation process , pay attention to summing up the work , promotion of advanced models , demonstration and guidance , to promote the work for the orderly conduct of good work to form a good atmosphere.
International heavy machinery industry overall development
Heavy machinery industry for the national economy and national defense construction to provide all kinds of technical equipment manufacturing,hoist crane with industries associated with high drive capability and high-tech features, is a national and regional level of industrialization and economic comprehensive strength of science and technology signs, but also between state and national long-term interests of the fundamental and strategic industries.
As advanced science and technology to transform traditional industries with an important carrier of the heavy machinery industry and high-tech industries and the development of information industry base and national economic security and military security is an important guarantee. Mature industrialized countries in the world today 40-80 years, respectively, in the 20th century established their complete heavy machinery manufacturing industrial system.
Today, these countries gradually achieve the transition to the heavy machinery industry as the carrier,overhead bridge crane to a service-focused direction of post-industrial transformation and the knowledge economy, efforts to promote industrial integration, development of core technologies to large enterprises rely on core technologies and capital as a means of worldwide allocation of production resources, strengthen production control, optimize product costs, in order to consolidate and improve the heavy machinery manufacturing competitiveness.
After decades of transition, the developed countries have focused on the heavy machinery industry, the vast majority of core technology, thereby maintaining a world leader. From a global perspective, the high concentration of heavy machinery industry,jib crane competitive enterprises occupy a larger market share.
As advanced science and technology to transform traditional industries with an important carrier of the heavy machinery industry and high-tech industries and the development of information industry base and national economic security and military security is an important guarantee. Mature industrialized countries in the world today 40-80 years, respectively, in the 20th century established their complete heavy machinery manufacturing industrial system.
Today, these countries gradually achieve the transition to the heavy machinery industry as the carrier,overhead bridge crane to a service-focused direction of post-industrial transformation and the knowledge economy, efforts to promote industrial integration, development of core technologies to large enterprises rely on core technologies and capital as a means of worldwide allocation of production resources, strengthen production control, optimize product costs, in order to consolidate and improve the heavy machinery manufacturing competitiveness.
After decades of transition, the developed countries have focused on the heavy machinery industry, the vast majority of core technology, thereby maintaining a world leader. From a global perspective, the high concentration of heavy machinery industry,jib crane competitive enterprises occupy a larger market share.
2013年8月28日星期三
Lifting machinery industry in 2015 is expected to pick up a full recovery
Lifting machinery industry in China has experienced nearly a decade "blowout" type of development, the whole industry has entered a production contract, revenue fell cycles. China
bridge gantry crane CEO, industry analyst Yangshu Yan said: "In fact, starting in 2010, the industry has begun crane shot down, and gradually into a low-profit era, to the winter of 2012, the industry has come."
2013 lifting machinery industry growth slowed further, many crane companies in the homogenization of serious competitive environment difficult. Lifting industry in China has a "barometer" of the Chinese crane hometown in Henan Province Changyuan, past busy, machines roaring situation no longer exists, lack of factory orders, production team layoffs have become a common phenomenon industry . Funding strand breaks is very difficult for many companies in the brink of life and death. 2013 a quarter of the entire industry output profits fell nearly 60%.
Yang Shuyan analysis that led to the first quarter of 2013, corporate sales and revenue both fell mainly due to weak industry demand, but in the back of weak demand, not just domestic fixed asset investment growth and a decline in the real estate market five new national policy impact, but also the entire country in 2012 a continuation of the equipment manufacturing industry downturn.
hoist gantry crane industry over the last golden years, gave birth to the rise of a number of leading enterprises, but the excessive pursuit of speed and scale also resulted in overcapacity, irrational structure, product homogeneity, etc. invisible injury, this situation is growing stagnant 2012 annual performance is very obvious to the industry caused a lot of pressure. Enter 2013 in the enterprise revenue decline, the market demand slowdown Yan Chun situation, Changyuan also from the government level, the use of the visible hand pushing business strategic restructuring, guide enterprises to adjust product structure, promote the healthy development of the whole industry a reasonable .
In fact, some industry experts are not optimistic about the crane industry placanticline internal reorganization, because different companies kneaded together, sheer scale merger may not be able to achieve optimal results. Large enterprises and groups requires companies endogenous development and growth, rather than a simple merger and reorganization. For the entire industry, lifting, walking industrial upgrading, product upgrading, technological innovation, marketing model innovation is stronger placanticline crane industry and the country's key.
In the context of global economic restructuring, lifting machinery industry development trend of slowdown is inevitable. China's manufacturing purchasing managers index (PMI) 2013 year April index was 50.6, down 0.30%, which we analysts believe the industry is still in the stage of stabilization row irresolute. At what time it comes to bridge crane can really pick up when Yangshu Yan analysis, the future lies in integration and opportunities for more innovative marketing model. At present, the Chinese crane industry is still relatively extensive mode of development, technological innovation capability is weak, low value-added products, the overall big but not strong, the real recovery in the industry should be in the end of 2015.
How quickly achieve industrial transformation and upgrading, smoothly through the downturn adjustment period? How in the future market competition in the next round to seize the high ground, the entire hoist crane in the future development process need to solve the primary problem. "
2013 lifting machinery industry growth slowed further, many crane companies in the homogenization of serious competitive environment difficult. Lifting industry in China has a "barometer" of the Chinese crane hometown in Henan Province Changyuan, past busy, machines roaring situation no longer exists, lack of factory orders, production team layoffs have become a common phenomenon industry . Funding strand breaks is very difficult for many companies in the brink of life and death. 2013 a quarter of the entire industry output profits fell nearly 60%.
Yang Shuyan analysis that led to the first quarter of 2013, corporate sales and revenue both fell mainly due to weak industry demand, but in the back of weak demand, not just domestic fixed asset investment growth and a decline in the real estate market five new national policy impact, but also the entire country in 2012 a continuation of the equipment manufacturing industry downturn.
hoist gantry crane industry over the last golden years, gave birth to the rise of a number of leading enterprises, but the excessive pursuit of speed and scale also resulted in overcapacity, irrational structure, product homogeneity, etc. invisible injury, this situation is growing stagnant 2012 annual performance is very obvious to the industry caused a lot of pressure. Enter 2013 in the enterprise revenue decline, the market demand slowdown Yan Chun situation, Changyuan also from the government level, the use of the visible hand pushing business strategic restructuring, guide enterprises to adjust product structure, promote the healthy development of the whole industry a reasonable .
In fact, some industry experts are not optimistic about the crane industry placanticline internal reorganization, because different companies kneaded together, sheer scale merger may not be able to achieve optimal results. Large enterprises and groups requires companies endogenous development and growth, rather than a simple merger and reorganization. For the entire industry, lifting, walking industrial upgrading, product upgrading, technological innovation, marketing model innovation is stronger placanticline crane industry and the country's key.
In the context of global economic restructuring, lifting machinery industry development trend of slowdown is inevitable. China's manufacturing purchasing managers index (PMI) 2013 year April index was 50.6, down 0.30%, which we analysts believe the industry is still in the stage of stabilization row irresolute. At what time it comes to bridge crane can really pick up when Yangshu Yan analysis, the future lies in integration and opportunities for more innovative marketing model. At present, the Chinese crane industry is still relatively extensive mode of development, technological innovation capability is weak, low value-added products, the overall big but not strong, the real recovery in the industry should be in the end of 2015.
How quickly achieve industrial transformation and upgrading, smoothly through the downturn adjustment period? How in the future market competition in the next round to seize the high ground, the entire hoist crane in the future development process need to solve the primary problem. "
The complexity of the construction of nuclear power will affect the development of large-scale engineering machinery
In the comprehensive nuclear safety checks and routine ongoing safety evaluation, based on the National Nuclear Security Administration in February 2012 drafted the "nuclear safety and radioactive pollution prevention" Twelfth Five Year Plan "and the 2020 vision" (hereinafter referred to as "Nuclear security plan") and the whole of society for public comment,hoist gantry crane the State Council examined and approved in the same year in May and issued a "nuclear safety planning." The plan put forward China's 2020 nuclear safety vision: the operation and safety of nuclear installations under construction levels continue to increase, "13 5" (2016-2020) and after the new nuclear units and strive to achieve virtual elimination from the design of radioactive substances the possibility of release; fully completed state supervision of nuclear and radiation safety technology research and development base and the national radiation environment monitoring system; formation of fully functional, responsive, hoist crane and efficient operation of nuclear and radiation accident emergency response system. 2020, to maintain the international advanced level nuclear safety, nuclear safety and to enhance the level of radioactive pollution prevention, radiation, environmental quality remains good.
After the Fukushima nuclear accident, the Chinese government will suspend inland nuclear power plant construction plans. Worldwide, some countries have taken measures to abandon its nuclear program, so that today in the energy sector is affected. For example, in Germany closed after the Fukushima nuclear power plant, the use of wind power generation, but recently affected by no wind, you can not generate electricity; Japan after the accident at the Fukushima nuclear power plant, shutting down part of the nuclear power plants, directly affect their summer supply, while resulting in reduced capacity of local enterprises or to the relocation of production, seriously affecting national economic development. In the construction of new projects for large crawler jib crane and other product performance and technical indicators will be increased accordingly.
After the Fukushima nuclear accident, the Chinese government will suspend inland nuclear power plant construction plans. Worldwide, some countries have taken measures to abandon its nuclear program, so that today in the energy sector is affected. For example, in Germany closed after the Fukushima nuclear power plant, the use of wind power generation, but recently affected by no wind, you can not generate electricity; Japan after the accident at the Fukushima nuclear power plant, shutting down part of the nuclear power plants, directly affect their summer supply, while resulting in reduced capacity of local enterprises or to the relocation of production, seriously affecting national economic development. In the construction of new projects for large crawler jib crane and other product performance and technical indicators will be increased accordingly.
2013年8月27日星期二
What is a crane
A crane is a
hoist crane is a for loop, intermittent movement of machinery. A work cycle include: extract extract means to put items from the lift, and then move to the designated place lower level items, followed by a reverse movement, so extract unit returns to original position for the next cycle.
Crane hoisting mechanism mainly run agencies, luffing, slewing mechanism and metal structures:
Crane hoisting mechanism is the basic work of institutions, mostly by hanging system and winch components, there are also lifting heavy objects through the hydraulic system.
Operating agencies to transport heavy loads or adjust the level of vertical overhead bridge crane working position, usually by the motor, speed reducer, brake and wheel components.
Luffing jib crane in only with, the amplitude decreases when the jib looked up, bent over when the amplitude increases, the amplitude of balanced and unbalanced luffing two kinds.
Rotating mechanism for rotating the boom is driven by the device and the rotary bearing device component.
Steel crane metal structure is the skeleton, the main carrier such as bridge, boom and mast for box-shaped structure or truss structure, but also for the web structure, and some can be used as a steel support beam.
Crane hoisting mechanism mainly run agencies, luffing, slewing mechanism and metal structures:
Crane hoisting mechanism is the basic work of institutions, mostly by hanging system and winch components, there are also lifting heavy objects through the hydraulic system.
Operating agencies to transport heavy loads or adjust the level of vertical overhead bridge crane working position, usually by the motor, speed reducer, brake and wheel components.
Luffing jib crane in only with, the amplitude decreases when the jib looked up, bent over when the amplitude increases, the amplitude of balanced and unbalanced luffing two kinds.
Rotating mechanism for rotating the boom is driven by the device and the rotary bearing device component.
Steel crane metal structure is the skeleton, the main carrier such as bridge, boom and mast for box-shaped structure or truss structure, but also for the web structure, and some can be used as a steel support beam.
Introduce various types of cranes
There are different types of cranes, functional and structural characteristics are different types of
overhead bridge crane are the following:
One, light and small crane
Small light lifting equipment is characterized by a lightweight, compact, simple operation, the operating range of the projector to point, line oriented. Light, compact lifting equipment, generally only a lifting mechanism, which only allows for a single heavy lifting movement. Fall into this category are: jack, pulley, hand (gas, electricity) moving hoists, winches and so on.
Two, bridge cranes
Bridge crane can be characterized so hang on a hook or other heavy objects on the device extracts the spatial vertically or horizontally to achieve migration. hoist gantry crane include: hoisting mechanism, large trolley agency. Rely on these institutions with the action, can make the weight in a certain cubic space lifting and handling.
Third, jib crane
Jib cranes include: hoisting mechanism, luffing mechanism, rotating mechanism. Rely on these institutions with the action, can in some heavy lifting and handling within the cylindrical space. Jib crane mounted on many vehicles or other forms of transport, and thus constitutes a rotating jib crane operation.
Four, lifts
Is characterized by a heavy lift or extract unit can only lift along the rails. Although only a lifting mechanism lifts, but the lift, there are many other appurtenances, so constitute a separate category, which includes: Lifts ship lift and so on. There are a variety crane classification. For example, according to extract device and use classification, crane hook, grab hoist crane s, electromagnetic crane, metallurgical cranes, stacker cranes, container cranes and rescue cranes.
One, light and small crane
Small light lifting equipment is characterized by a lightweight, compact, simple operation, the operating range of the projector to point, line oriented. Light, compact lifting equipment, generally only a lifting mechanism, which only allows for a single heavy lifting movement. Fall into this category are: jack, pulley, hand (gas, electricity) moving hoists, winches and so on.
Two, bridge cranes
Bridge crane can be characterized so hang on a hook or other heavy objects on the device extracts the spatial vertically or horizontally to achieve migration. hoist gantry crane include: hoisting mechanism, large trolley agency. Rely on these institutions with the action, can make the weight in a certain cubic space lifting and handling.
Third, jib crane
Jib cranes include: hoisting mechanism, luffing mechanism, rotating mechanism. Rely on these institutions with the action, can in some heavy lifting and handling within the cylindrical space. Jib crane mounted on many vehicles or other forms of transport, and thus constitutes a rotating jib crane operation.
Four, lifts
Is characterized by a heavy lift or extract unit can only lift along the rails. Although only a lifting mechanism lifts, but the lift, there are many other appurtenances, so constitute a separate category, which includes: Lifts ship lift and so on. There are a variety crane classification. For example, according to extract device and use classification, crane hook, grab hoist crane s, electromagnetic crane, metallurgical cranes, stacker cranes, container cranes and rescue cranes.
2013年8月26日星期一
Tan Chinese crane rental market situation
Domestic crane rental business after several years of rapid development of the national economy, state-owned subsidiaries from five years ago, a crane rental company dominate the world, the evolution of what is now private and state-owned rival, mainly due to the more open
overhead bridge crane sales up to solve the private financing difficulties, coupled with private enterprises in the decision-making speed and operational flexibility, making the emergence of private enterprises in the crane industry, the Great Leap Forward-style growth. In this context, the domestic crane manufacturing enterprise scale, due to follow the market, there have been extraordinary development.
Beginning last year, but with the domestic economic growth rate to stabilize or even decline, finally appeared crane rental market oversupply, rental prices began to decline, and their utilization rate also decreased rapidly, coupled with the rising cost of the domestic variety, especially labor costs rise, the market has a large amount of small hoist crane , ROI began to rapidly decrease, some operators have begun to appear bad loss, making the driving force behind the development of leasing companies have lost the source, but also to continue the rapid development of manufacturing enterprises no basis, manufacturing companies also benefit from the development to the pursuit of scale to quality development.
Crane is a universal lifting machinery, due to structural wear low, state-owned enterprises will generally be set at a large crane depreciation 14 years, the other for 10 years. However, the current lease with the actual conditions of use, the general life of 20-30 years, this feature makes the crane rental market for more than after a substantial decline in return on assets leasing companies, manufacturers sales may decline substantially, the entire industry will present vicious competition. At present, the domestic leasing market is in this situation.
As previously described one conclusion: China's crane rental market since last year has ended a period of rapid growth, and leasing companies have entered into a vicious competition period, just over two years, the overall decline in rental prices 30-50 %, cranes payback period from 4-6 years, dropped to 6-10 years. Manufacturing companies also quickly dropped from the peak of development, although some factory sales value of these two years is relatively stable, but the gross margin decline. Part of the manufacturer's sales began to fall sharply. If allowed this trend continues,jib crane China crane rental market woeful.
Beginning last year, but with the domestic economic growth rate to stabilize or even decline, finally appeared crane rental market oversupply, rental prices began to decline, and their utilization rate also decreased rapidly, coupled with the rising cost of the domestic variety, especially labor costs rise, the market has a large amount of small hoist crane , ROI began to rapidly decrease, some operators have begun to appear bad loss, making the driving force behind the development of leasing companies have lost the source, but also to continue the rapid development of manufacturing enterprises no basis, manufacturing companies also benefit from the development to the pursuit of scale to quality development.
Crane is a universal lifting machinery, due to structural wear low, state-owned enterprises will generally be set at a large crane depreciation 14 years, the other for 10 years. However, the current lease with the actual conditions of use, the general life of 20-30 years, this feature makes the crane rental market for more than after a substantial decline in return on assets leasing companies, manufacturers sales may decline substantially, the entire industry will present vicious competition. At present, the domestic leasing market is in this situation.
As previously described one conclusion: China's crane rental market since last year has ended a period of rapid growth, and leasing companies have entered into a vicious competition period, just over two years, the overall decline in rental prices 30-50 %, cranes payback period from 4-6 years, dropped to 6-10 years. Manufacturing companies also quickly dropped from the peak of development, although some factory sales value of these two years is relatively stable, but the gross margin decline. Part of the manufacturer's sales began to fall sharply. If allowed this trend continues,jib crane China crane rental market woeful.
Endless crane accidents
Hanging on the door in the workshop electric crane, was "three noes" products, and the side of the simple three-manned cargo lifts, but also secretly assembled. This is the recent Taiwan City, Zhejiang Province, quality supervision departments, Union Electric Co.,eot crane Ltd. Hao lifting conducted surprise checks to see the situation, which found a lot of security risks. According to Zhejiang Provincial statistics, last year, the province's machinery and electronic special equipment fatalities 8, of which fixed Easy lift accident six, the death of six people, accounting for electromechanical special equipment accidents 75%.
Nearly four years of accident data show that: the type of crane accidents, mainly in fixed simple lift bridge (the door) cranes, harbor, overhead gantry cranes (quay cranes) and other categories, together accounted for crane accident about 80%. Among them, the fixed simple lift accident particularly obvious, and occurs mainly in small and medium sized private economy gathered Wenzhou, Taizhou, Jinhua and other regions.hoist gantry crane The management system of confusion, there are security risks as well as the device illegal operation, is caused by lifting the primary cause of the accident.
In recent years, with the sustained and rapid economic development, increasing the number of Zhejiang lifting machinery. Some legal units and enterprises as safety consciousness, lifting machinery and undocumented counterfeit manufacturing, installation and use of technical specifications do not meet safety requirements and other issues are very prominent.
These are just happen Zhejiang Province, the relevant responsible person said, lifting machinery production and life as a social indispensable production equipment, has been widely used in various fields of economic construction. Meanwhile, the lifting machinery in the course also has a larger risk. It is understood that in 2006 the national total of 299 casualties from special equipment,hoist crane lifting machinery accident had 133 cases, accounting for 44.5% of total number of accidents.
Nearly four years of accident data show that: the type of crane accidents, mainly in fixed simple lift bridge (the door) cranes, harbor, overhead gantry cranes (quay cranes) and other categories, together accounted for crane accident about 80%. Among them, the fixed simple lift accident particularly obvious, and occurs mainly in small and medium sized private economy gathered Wenzhou, Taizhou, Jinhua and other regions.hoist gantry crane The management system of confusion, there are security risks as well as the device illegal operation, is caused by lifting the primary cause of the accident.
In recent years, with the sustained and rapid economic development, increasing the number of Zhejiang lifting machinery. Some legal units and enterprises as safety consciousness, lifting machinery and undocumented counterfeit manufacturing, installation and use of technical specifications do not meet safety requirements and other issues are very prominent.
These are just happen Zhejiang Province, the relevant responsible person said, lifting machinery production and life as a social indispensable production equipment, has been widely used in various fields of economic construction. Meanwhile, the lifting machinery in the course also has a larger risk. It is understood that in 2006 the national total of 299 casualties from special equipment,hoist crane lifting machinery accident had 133 cases, accounting for 44.5% of total number of accidents.
2013年8月25日星期日
How to check the crane hook
Crane hook assembly as shown in drawings, the main by a pulley, pulley shaft 2, anti-decoupling device 3, leptospirosis 4, beams 5, bearing 6, the combination of bolts 7, round nut 8, 9 and plywood guidewire block 10 and other components. To ensure the normal use of the
bridge crane hook, crane operators, maintenance personnel, as appropriate, to carry out security checks on these parts, check the contents include three: First, check the technical documents, two is to check the appearance and surface cracks, three is a measure of the amount of wear, opening degree, reversing the deformation and so on.
1 matching technical documents
Put into use before the new crane, the operator should check the hook assembly relevant technical documentation. Signs which hook assembly of the standard load rating should be consistent with the actual lifting loads, the related technical documentation and factory certification should be complete.
2. Visual inspection
The operator has the appearance of each hook assembly should be checked, each component requires the following: 1 pulley shaft 2 to rotate the pulley should be flexible, no looseness; pulley rim 1 should be no breakage or crack, or should be replaced ; Anti-decoupling device 3 should open and close freely, the spring should be intact, in order to prevent the rope from slipping off the hook body 4; leptospirosis four bearings in the beam 5 6 should be flexible rotation; round nut 7 and 8 can not be combined with loose bolts .
3. Check the hook surface cracks
First with kerosene Leptospira 4, and then 20 times magnifying glass to check whether there are cracks leptospirosis, coloring method used when necessary testing. For large-tonnage hoist crane hook, but also using non-destructive testing method (magnetic testing, ultrasonic testing) check hook inside and outside the presence of cracks. Such as leptospirosis four surface and internal cracks should be replaced immediately.
4. Measurement geometry leptospirosis
(1) Wear
Conducting periodic inspection crane should be used when measuring calipers caliper or wear surface leptospirosis 4 the amount of wear. If a larger cross-section wear its force reached 10% of the original size should be replaced. Crane overhaul, respond hook assembly for dismantling and measure pulley shaft 2, beams 5, 6 and plywood 10 shaft bearing bore wear. When the wear reaches 5% of the original size, it should be replaced.
(2) the degree of opening
Leptospira four openings measuring method is as follows: According to the hook on the label of the rated load for load test, the load incrementally and gradually increase to 1.25 times the rated load, lifting time of less than 10min. Measured with a caliper after unloading hook opening degree, the value is compared with the original opening size, the opening degree of the increase should not exceed 0.25%.
When the opening of the new hook, the hook body 4 can punch on each side of the opening punch a mark, the measured distance between the marks 2 and the opening size of the original recording.hoist gantry crane If the degree of deformation of leptospirosis four openings than the original 15% increase in the degree of opening, should be replaced.
(3) torsional deformation
Inspection Leptospira four torsional deformation measurement methods are as follows: the side with a ruler positioned against the side of the shank 4, view check ruler with leptospirosis four sides of the gap. If leptospirosis four different sides of the gap, indicating leptospirosis four torsion deformation. For accurate measurement of the torsional deformation of leptospirosis 4, it can be disassembled with crossed feet on the platform testing. Leptospira four torsion over10 ° should be replaced.
1 matching technical documents
Put into use before the new crane, the operator should check the hook assembly relevant technical documentation. Signs which hook assembly of the standard load rating should be consistent with the actual lifting loads, the related technical documentation and factory certification should be complete.
2. Visual inspection
The operator has the appearance of each hook assembly should be checked, each component requires the following: 1 pulley shaft 2 to rotate the pulley should be flexible, no looseness; pulley rim 1 should be no breakage or crack, or should be replaced ; Anti-decoupling device 3 should open and close freely, the spring should be intact, in order to prevent the rope from slipping off the hook body 4; leptospirosis four bearings in the beam 5 6 should be flexible rotation; round nut 7 and 8 can not be combined with loose bolts .
3. Check the hook surface cracks
First with kerosene Leptospira 4, and then 20 times magnifying glass to check whether there are cracks leptospirosis, coloring method used when necessary testing. For large-tonnage hoist crane hook, but also using non-destructive testing method (magnetic testing, ultrasonic testing) check hook inside and outside the presence of cracks. Such as leptospirosis four surface and internal cracks should be replaced immediately.
4. Measurement geometry leptospirosis
(1) Wear
Conducting periodic inspection crane should be used when measuring calipers caliper or wear surface leptospirosis 4 the amount of wear. If a larger cross-section wear its force reached 10% of the original size should be replaced. Crane overhaul, respond hook assembly for dismantling and measure pulley shaft 2, beams 5, 6 and plywood 10 shaft bearing bore wear. When the wear reaches 5% of the original size, it should be replaced.
(2) the degree of opening
Leptospira four openings measuring method is as follows: According to the hook on the label of the rated load for load test, the load incrementally and gradually increase to 1.25 times the rated load, lifting time of less than 10min. Measured with a caliper after unloading hook opening degree, the value is compared with the original opening size, the opening degree of the increase should not exceed 0.25%.
When the opening of the new hook, the hook body 4 can punch on each side of the opening punch a mark, the measured distance between the marks 2 and the opening size of the original recording.hoist gantry crane If the degree of deformation of leptospirosis four openings than the original 15% increase in the degree of opening, should be replaced.
(3) torsional deformation
Inspection Leptospira four torsional deformation measurement methods are as follows: the side with a ruler positioned against the side of the shank 4, view check ruler with leptospirosis four sides of the gap. If leptospirosis four different sides of the gap, indicating leptospirosis four torsion deformation. For accurate measurement of the torsional deformation of leptospirosis 4, it can be disassembled with crossed feet on the platform testing. Leptospira four torsion over10 ° should be replaced.
Chinese tower crane market prospects to enter into electricity supplier industry trends
As China's large infrastructure continue to be launched, as well as the construction of cities and towns across the country to start construction tower crane way to bring a great convenience, China tower
hoist crane market prospects, are long-term bullish. In addition, the tower crane into the electricity supplier has become the industry trend.
China's current production of tower crane, construction will not only meet the domestic demand, but also are exported to Europe, America and other developed countries and regions, China has become the world's largest producer of the tower crane. Public information, in 2002 China became the world's first tower crane output exceeded 10,000 units nation, and by 2010, China's annual output of nearly 40,000 tower units (including exports 2,000 units). These are no doubt tower crane commerce journey of good news.
As the market changes, in order to meet our customers in the purchase of the tower crane enjoy the process more professional and comprehensive service, many domestic enterprises started wars in large tower overhead bridge crane electricity providers, and tasted the sweetness. In fact, not all of the tower crane manufacturers have shared electricity supplier cake. Like a small tower crane by funding and personnel pressure, inability to operate their own platform, but if the use of network marketing, especially with mature business platform collaboration will be relatively simple.
Tower crane enterprises to enter the field of electronic commerce are generally divided into three ways, the first is an e-commerce platform to create their own, this approach requires initial investment in capital and technology requirements are very high; second is the use of e-commerce platform, corporate to establish their own operations and maintenance teams advantage of this model can quickly return the status of commercial enterprises, but requires highly qualified operations personnel; third is looking for an agent operators, traditional companies and agents into the interests of operators to reach agreement . As can be seen, the third model the cost of small, low threshold, is more suitable for SMEs.
However, even with the proxy operators, e-commerce platform for a variety of modes also allow SMEs dilemma.
At present, many small and medium enterprises in the use of B2B platform, has formed a limited sense, only concerned about Ali Baba and other large e-commerce sites, but in the presence only to find order and did not increase, some companies even so lost confidence in e-commerce. Looking at the domestic supplier industry, mechanical and electrical towers, pay-online trading platform only lifting equipment factory store one.
At present, many B2B platform adopts a membership system, whether or not there are orders, the annual membership fee is out there, the manufacturers had assumed great risk. Lifting equipment factory store is a single-mode does not charge any fees until, that is, the so-called pay-for, the transaction is not successful, do not charge a penny. Just released on the platform enterprise supply information, factory store will fully promote solve inquiry, order problems, and ultimately by the company to decide whether to trade. Did not come alone, companies are not spending a penny. Plus free to enter, exclusive service, lifting equipment factory shop is simply the brand Direct online business center. Many manufacturers have successfully settled tower bridge gantry crane lifting equipment factory stores, will lead the industry into electricity suppliers tower crane era.
China's current production of tower crane, construction will not only meet the domestic demand, but also are exported to Europe, America and other developed countries and regions, China has become the world's largest producer of the tower crane. Public information, in 2002 China became the world's first tower crane output exceeded 10,000 units nation, and by 2010, China's annual output of nearly 40,000 tower units (including exports 2,000 units). These are no doubt tower crane commerce journey of good news.
As the market changes, in order to meet our customers in the purchase of the tower crane enjoy the process more professional and comprehensive service, many domestic enterprises started wars in large tower overhead bridge crane electricity providers, and tasted the sweetness. In fact, not all of the tower crane manufacturers have shared electricity supplier cake. Like a small tower crane by funding and personnel pressure, inability to operate their own platform, but if the use of network marketing, especially with mature business platform collaboration will be relatively simple.
Tower crane enterprises to enter the field of electronic commerce are generally divided into three ways, the first is an e-commerce platform to create their own, this approach requires initial investment in capital and technology requirements are very high; second is the use of e-commerce platform, corporate to establish their own operations and maintenance teams advantage of this model can quickly return the status of commercial enterprises, but requires highly qualified operations personnel; third is looking for an agent operators, traditional companies and agents into the interests of operators to reach agreement . As can be seen, the third model the cost of small, low threshold, is more suitable for SMEs.
However, even with the proxy operators, e-commerce platform for a variety of modes also allow SMEs dilemma.
At present, many small and medium enterprises in the use of B2B platform, has formed a limited sense, only concerned about Ali Baba and other large e-commerce sites, but in the presence only to find order and did not increase, some companies even so lost confidence in e-commerce. Looking at the domestic supplier industry, mechanical and electrical towers, pay-online trading platform only lifting equipment factory store one.
At present, many B2B platform adopts a membership system, whether or not there are orders, the annual membership fee is out there, the manufacturers had assumed great risk. Lifting equipment factory store is a single-mode does not charge any fees until, that is, the so-called pay-for, the transaction is not successful, do not charge a penny. Just released on the platform enterprise supply information, factory store will fully promote solve inquiry, order problems, and ultimately by the company to decide whether to trade. Did not come alone, companies are not spending a penny. Plus free to enter, exclusive service, lifting equipment factory shop is simply the brand Direct online business center. Many manufacturers have successfully settled tower bridge gantry crane lifting equipment factory stores, will lead the industry into electricity suppliers tower crane era.
2013年8月23日星期五
Crane accident-prone torque limiter installed imperative
2012 crane accident-prone year, 8.9 days in Zaozhuang Tengzhou Shan State Road and xingtan Road Interchange, a
hoist crane when the crane in the removal of the dumping site, tower crane arm hit two pedestrians, after she died; 7.27 days 16:00 more, Fuyuan Road, Changsha Xiangjiang River Bridge Eastbound gantry crane collapse incident occurred, the construction side in the removal of 120 tons heavy gantry crane, the Bailey rollover occurred, resulting in one death and three injuries. 7.19 at 8:00 pm, Atlantic Railway Lintong District Xinfeng Railway 21 Bureau of the construction site accident, a more than 10 meters above the ground in the construction of the bridge machine suddenly collapsed, causing two casualties; 7.4 at 0:30 Xu, in Lanzhou Qilihe District No. 86 Mars Street, near a construction site, a crane during operation dumping, hit a residential building and a vehicle parked on the roadside and a transformer, the accident caused one death and three injuries ......
In the bloody incident, the local security departments have launched special rectification work crane. Among them, the torque limiter is installed as one of the key checks. After installation torque limiter, overhead bridge crane drivers no longer work with empirical estimates load size, but you can visually see the relevant parameters from the display, a clear understanding of hanging out in the course of the campaign lifting torque variation and the rated lifting torque difference. In this way, the jib crane driver to significantly reduce the intensity of work, thus effectively avoiding the overload and misuse. Reduce crane accident possible, avoid personal injury caused by the accident and economic losses.
In the bloody incident, the local security departments have launched special rectification work crane. Among them, the torque limiter is installed as one of the key checks. After installation torque limiter, overhead bridge crane drivers no longer work with empirical estimates load size, but you can visually see the relevant parameters from the display, a clear understanding of hanging out in the course of the campaign lifting torque variation and the rated lifting torque difference. In this way, the jib crane driver to significantly reduce the intensity of work, thus effectively avoiding the overload and misuse. Reduce crane accident possible, avoid personal injury caused by the accident and economic losses.
2013年8月22日星期四
State regulation lifting construction of national key construction projects
Production Safety Commission Office of the State Council recently issued a circular that is focused on solving the construction cranes, scaffolding collapse accident-prone, frequent problems, eot crane effectively prevent and resolutely curb serious accidents, decided this year to April to December, in the construction areas of prevention construction cranes, scaffolding collapse special rectification work.
An commissioned issued special rectification program that focuses on the special rectification are: housing and public works, industry, railways, highways, electricity (including nuclear power) and water (including the South) and other construction projects, especially national key construction projects, the provincial key investment and development projects, and real estate development projects, affordable housing and urban rail transit construction and other projects.
Notice that the special rectification of the key elements include: Construction Project site uses various types of lifting machinery, including gantry cranes, bridge machines, bridge crane especially the tower crane collapsed, falling accident, as well as tower crane installation, demolition process in a variety of hazards and accidents; construction projects and construction sites on which various types of scaffolding, especially stents, scaffolding support system collapse, including any pipe material, the use of various types of templates triggered collapse.
The circular emphasizes that the main responsibility to implement the enterprise, strengthen construction safety supervision and management; regulate the construction market order, crack down on illegal construction violations, to crack down on qualifications beyond the scope of contract works, construction companies no relevant qualification certificates, illegal subcontracting, subcontracting and other illegal activities; strengthen grass-roots infrastructure, enhance security capabilities construction; strengthen the construction site management, improve the level of safety in production of construction enterprises; strengthen scientific and technological support, and actively promote the construction of advanced and applicable technologies.
The circular pointed out, through special training to effectively prevent the construction field construction cranes, scaffolding collapse, further reducing the total accidents, efforts to achieve year 2012 construction field construction cranes, scaffolding collapse the number of accidents and deaths up decreased,hoist crane a larger decline in the number of accidents is not less than 3.2% of the target, to prevent the occurrence of major accidents.
Notification requirements, from May to September this year to carry out self-examination and self-correction, October to mid-November on the key areas, key enterprises and key projects to conduct random checks.
An commissioned issued special rectification program that focuses on the special rectification are: housing and public works, industry, railways, highways, electricity (including nuclear power) and water (including the South) and other construction projects, especially national key construction projects, the provincial key investment and development projects, and real estate development projects, affordable housing and urban rail transit construction and other projects.
Notice that the special rectification of the key elements include: Construction Project site uses various types of lifting machinery, including gantry cranes, bridge machines, bridge crane especially the tower crane collapsed, falling accident, as well as tower crane installation, demolition process in a variety of hazards and accidents; construction projects and construction sites on which various types of scaffolding, especially stents, scaffolding support system collapse, including any pipe material, the use of various types of templates triggered collapse.
The circular emphasizes that the main responsibility to implement the enterprise, strengthen construction safety supervision and management; regulate the construction market order, crack down on illegal construction violations, to crack down on qualifications beyond the scope of contract works, construction companies no relevant qualification certificates, illegal subcontracting, subcontracting and other illegal activities; strengthen grass-roots infrastructure, enhance security capabilities construction; strengthen the construction site management, improve the level of safety in production of construction enterprises; strengthen scientific and technological support, and actively promote the construction of advanced and applicable technologies.
The circular pointed out, through special training to effectively prevent the construction field construction cranes, scaffolding collapse, further reducing the total accidents, efforts to achieve year 2012 construction field construction cranes, scaffolding collapse the number of accidents and deaths up decreased,hoist crane a larger decline in the number of accidents is not less than 3.2% of the target, to prevent the occurrence of major accidents.
Notification requirements, from May to September this year to carry out self-examination and self-correction, October to mid-November on the key areas, key enterprises and key projects to conduct random checks.
Construction crane danger caused by factors
By analyzing the following main reasons:
1, special equipment manufacturing license terms
In some places because of the quality and technical supervision departments relevant laws and regulations recognize different;hoist crane implementation of strict, so that some do not meet the requirements of the lifting machinery and equipment manufacturing enterprises achieved a "special equipment manufacturing license", leading to some unqualified products into the rental market.
2, special equipment manufacturing supervision and inspection of
Lifting machinery manufacturing enterprises producing devices can not achieve 100% detection rate, resulting in some mechanical equipment factory have failed to obtain a "product certification" and "special equipment manufacturing supervision and inspection certificate."
3, the production technology
At present, China's production of construction lifting equipment company, with a tower Steel crane self-development capacity, very few companies, mostly using imported equipment production technology tower crane drawings, but for some structures, institutions had to change, because the original tower crane design drawings of the core technology to understand, there is a deviation on digestion; substitution of materials, manufacturing processes, tooling manufacturing, design improvements, technical capabilities are not designed to support the unit, resulting in some construction crane equipment in production technology to a security risk.
From the above causes manufacturers of products have quality problems caused by industrial accidents.bridge crane By 1990, the country's 128 since starting construction crane responsibility for production safety accident analysis, accident six due to quality problems, accounting for 4.7%.
1, special equipment manufacturing license terms
In some places because of the quality and technical supervision departments relevant laws and regulations recognize different;hoist crane implementation of strict, so that some do not meet the requirements of the lifting machinery and equipment manufacturing enterprises achieved a "special equipment manufacturing license", leading to some unqualified products into the rental market.
2, special equipment manufacturing supervision and inspection of
Lifting machinery manufacturing enterprises producing devices can not achieve 100% detection rate, resulting in some mechanical equipment factory have failed to obtain a "product certification" and "special equipment manufacturing supervision and inspection certificate."
3, the production technology
At present, China's production of construction lifting equipment company, with a tower Steel crane self-development capacity, very few companies, mostly using imported equipment production technology tower crane drawings, but for some structures, institutions had to change, because the original tower crane design drawings of the core technology to understand, there is a deviation on digestion; substitution of materials, manufacturing processes, tooling manufacturing, design improvements, technical capabilities are not designed to support the unit, resulting in some construction crane equipment in production technology to a security risk.
From the above causes manufacturers of products have quality problems caused by industrial accidents.bridge crane By 1990, the country's 128 since starting construction crane responsibility for production safety accident analysis, accident six due to quality problems, accounting for 4.7%.
2012 electric hoist market opportunities and risks
At the recent China Construction Machinery Industry Association annual meeting engineering branch hoist,hoist crane electric hoist branch chairman Su Jie said that China's electric hoist industry status quo is the market sales continued to grow, leading enterprises continued strong business costs continue to rise, the market pattern remains uneven. Electric hoist industry in the country to enjoy the positive effects of macroeconomic policies, the various risks they go hand in hand.
At the policy level, has raised the benchmark deposit and lending interest rate and other effects appear, fixed asset investment funds (especially credit) constantly tight, restricting investment; private credit costs continue to rise, to exert pressure on private investment, SME financing more difficult, affecting corporate self-financing capacity; yuan upward trend in interest rates, foreign products to seize the domestic market, the price advantage of domestic enterprises reduce the trade surplus narrowed,hoist gantry crane hoist the domestic market more competitive; energy conservation is imperative, mandatory national requirements complete emission reduction targets and eliminate backward production capacity, companies will face cost, technology, environmental protection and other pressures.
Operational risk has surfaced. Industry competition, rising raw material prices, rising labor costs, such as the formation of core technology limited construction crane industry operational risks. Financial risk increases. Electric hoist gantry crane iability scale increases year by year, the phenomenon of user arrears increased inventories and increased risk of bad debts increased mortgage payments and so on. These formed the financial risk.
At the policy level, has raised the benchmark deposit and lending interest rate and other effects appear, fixed asset investment funds (especially credit) constantly tight, restricting investment; private credit costs continue to rise, to exert pressure on private investment, SME financing more difficult, affecting corporate self-financing capacity; yuan upward trend in interest rates, foreign products to seize the domestic market, the price advantage of domestic enterprises reduce the trade surplus narrowed,hoist gantry crane hoist the domestic market more competitive; energy conservation is imperative, mandatory national requirements complete emission reduction targets and eliminate backward production capacity, companies will face cost, technology, environmental protection and other pressures.
Operational risk has surfaced. Industry competition, rising raw material prices, rising labor costs, such as the formation of core technology limited construction crane industry operational risks. Financial risk increases. Electric hoist gantry crane iability scale increases year by year, the phenomenon of user arrears increased inventories and increased risk of bad debts increased mortgage payments and so on. These formed the financial risk.
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