gantry crane strictly enforce the "no hanging ten" system

① command signal is unknown or arbitrary command does not hang;
② not exceed the rated lifting weight lifting;
③ gantry crane spreaders unreasonable or unsound is not hanging objects hanging bundles;
④ Someone or other floating items are not hanging on to put hanging objects;
⑤ Hoist crane brake or other brake safety device failure does not hang;
⑥ hanging heavy traffic when not hanging directly processed;
⑦ pull Xiegua not hanging crooked;
⑧ explosive objects are not hanging;
⑨ objects buried in the ground without pulling hoists;
⑩ angular blocks mouth objects, not really hanging mats.

The method of choosing an electric crane hoisted What?

Select electric suspension  gantry crane  is there are many, and is now in the process of using them often will notice the quality of electric overhead crane, and in ensuring quality problem is not a big problem under the premise can be use, and generally like the same kind of product is more useful, so now people are more like them, then when the electric machinery enterprises in the choice of crane hoisted what way to do it?
1.Brand
Typically, in the choice of machinery products in the process is the need to look at their product brand image, often a lot of plastic products, established brand image is not very good, so people in the choice of the time its not very satisfied with the choice, in fact the difficulty is relatively large, when the electric overhead crane products gradually increased, the customer is also a troublesome thing, in the course of its production brand is more critical, so when choosing an electric overhead  bridge gantry crane  brand is more important.
(2) the role of
As this electric crane hoisted it on the market must have a significant role, and in the process used to carry out the role which can well be reflected, this role is the ability to be a good show out , so in the process of choosing an electric  bridge crane  is important to note these.

Crane hook material

Crane hook material requires a high strength, toughness and ductility, there is no danger of sudden rupture. Single high strength material and defects usually very sensitive to cracks and higher strength, the greater the likelihood of sudden rupture. Therefore, it is widely used  gantry crane  hook material low carbon steel and low carbon steel to manufacture.

According to GB10051-88 "lifting hooks" requirement, forging hook material should be used DG20, DG20Mn, DG34CrMo, DG34CrNiMo, DG34CR2Ni2Mo steel manufacturing and other models, especially DG34CrMo, DG34CrNiMo, DG34CR2Ni2Mo alloy steel, because it contains certain content Cr, Ni , Mo element, can inhibit the austenite grain growth, making it a strong increase;bridge gantry crane during tempering, but also has three elements due to intensity decreased much, but elongation and impact toughness has enhanced many, Given containing Cr, Ni, Mo alloy elements have high strength, toughness and good, use it to create a relatively small hook size, carrying capacity is high.

In order to ensure that the manufacturing out of the hook does not occur in the life of a hard change, aging embrittlement, must ensure that the content of aluminum in the steel, to International Organization for Standardization ISO standard 0.02%.

Chip hook is generally used for large tonnage or a hot place by strong, he is usually with a thickness not less than 20mm of A3, 20 or 16Mn steel plate. Chip hook generally not a sudden rupture and damage because of breakage caused by defects confined to individual plates,hoist gantry crane and the remaining plate can still support the lifting of individual damaged plate can be replaced, and thus greater than the safety hook forging sex.

Construction Machinery engine of growth remains strong, the acceleration of urbanization positive industry outlook

Sales booming with construction machinery enterprises operating situation in stark contrast to the trend of the stock of construction machinery sector remains in the doldrums this year.hoist gantry crane A researcher believes that as the scale of investment in fixed assets and a strong positive correlation between cyclical industry, taking into account the scale of investment and real estate control policies sharply increasing the degree of market doubts about the prospects of construction machinery.
In the Golden State Securities researcher Dong Yaguang opinion, the process of urbanization and growth space determines the advancing speed of engineering machinery industry development prospects. Over the past nine years, China's urbanization rate increased by nearly 10 percentage points, the current urbanization rate is less than 50%. Therefore, to achieve in 2020 nearly 60% of the target, there is a lot of infrastructure needs, improve. For data to estimate the urbanization rate increased by one percentage point each, will add 6.6 trillion in investment demand.bridge gantry crane The accelerated process of urbanization construction machinery industry will provide long-term stable development momentum.
GF Securities researcher Qiu Shiliang believe that China's construction machinery industry is growing late, industry, the economy in the short term may be peaking. He predicted that after three years,gantry crane China's construction machinery pattern will initially laid, then the industry will enter a period of slow growth.

Crane parts industry development status and future trend analysis

The face of the huge crane market demand , China's  gantry crane  auxiliary equipment enterprises have increased their marketing and development efforts . But the vast majority of companies are still doing some of the more traditional way , relying on low- price competition to gain market share . So, small businesses how to change this situation , to seek a breakthrough to develop it ?

Industry Status

Along with the increasing emphasis on the construction machinery industry , in recent years , China's crane industrial policy direction infrastructure components will start doing financial subsidies. In other words, such as spreader rigging , lifting appliances and other  bridge gantry crane  spare parts industry, will be a good opportunity for development.

The data show that the first quarter of 2013, the overall development of construction machinery industry exceeded early expectations. This fully shows that China is increasing investment in infrastructure , energy and other construction projects , driven to the crane industry has brought high-speed growth , crane auxiliary equipment market much room for improvement .

Business problems

Spreader rigging, is the most commonly used auxiliary hoist gantry crane , lifting devices used for lifting heavy objects , in order to meet the daily maintenance of large-scale machinery lifting and improve operating efficiency . 2008 world financial crisis , China's sling is developing very rapidly , either export or domestic sales have reached the pinnacle of history . Faced with the grim economic situation , a sling sales competition became more intense.

In addition, the spreader rigging companies had also faced with technical standards , and management problems. Some export-oriented enterprises , due to lack of experience on the domestic market , in order to survive , the price war has seriously affected the healthy development of the industry sling . And some envious electricity supplier market for SMEs , impatient sales wrong generous self- development platform or choose to pay huge membership fees platforms , do not get the desired effect, no major increase in sales .

Future Prospects

Future, the crane auxiliary equipment industry is facing the problem of unbalanced supply and demand is mainly manifested in two trends , one is globalization , one customer differentiation. Relatively small crane auxiliary equipment companies, customer-differentiated both opportunities and challenges . In short , products and technology is the core of development , the introduction of network marketing business success mechanism .

Therefore , small and medium enterprises if the crane auxiliary equipment in order to continue to maintain good profit ,overhead gantry crane you need to constantly improving product technology, to meet different customer needs, to ensure that the company's sales starting point in the earnings position.

Second half of the construction machinery and accessories industry, or will usher in a great political situation stable growth

Into July, the construction machinery industry is finally over the first half, "volatile" situation, the industry sources said the current stage of rapid growth to stable growth from the "growing pains" that is, the beginning of the second half, engineering  gantry crane  and accessories industry or will usher in a golden political situation stable growth. But expectations are always good, as has been chanted since the beginning of the "recovery" as the specific market situation is such prophecies wish, on the dawn of the unknown. How to make good use of construction machinery parts in the second half of the various policies and market opportunities, is the urgent problem.

Although the first half, the construction machinery industry several major economic indicators showed a negative number, 1-May, most of the products engineering machinery production has continued to decline. Dig earth moving machinery, excavators and loaders decreased production increased more than 5%. However, compaction  bridge gantry crane  production rose slightly, up 3.5 percent, down 8.23 percentage points from the previous month. Compared to the previous month, data, production decline was slight improvement.

But the dismal data, and did not affect the industry's confidence on the road to recovery. Association believes that the current development trend of the construction machinery industry is robust. Although the industry is difficult to return to the previous high level of growth in 2011, but the ups and downs of the phenomenon will be rare in the future, steady state growth policies will gradually pull (such as shantytowns, etc.), the situation is still optimistic about the industry as a whole will show steady sustainable development trend.

Even if the development of the industry as experts said, the construction machinery industry is still in a rising channel, but if companies can not focus on solving key parts of the development, then certainly by others. In the complex market environment in the face of fierce competition in the market,  bridge crane  parts enterprises should actively seek new ways to find new ways to seize the opportunity.

In addition, the State Council executive meeting held recently pointed out, research, deployment, accelerate the transformation of squatter settlements is one of the new urbanization is expected to leveraging the 300 billion yuan investment market, which will help promote the construction machinery industry to achieve warmer.

Crane points to note

Since lifting is special equipment, with a higher risk characteristics, therefore, the installation of the  gantry crane  , the security is especially important to pay particular attention to the following aspects:
        (A) the crane structure are mostly large institutional complex mechanical devices, it is often difficult overall transport is often split after shipping the equipment to use the site as a whole assembly. Therefore, it is necessary in order to reflect properly installed crane overall eligibility to test the integrity of the whole crane and integrity.
        (2) cranes are in use venues or buildings orbit. Therefore, its orbit or install base, and the crane itself, is able to complement each other well, and the ability to run whether they can adapt to meet strict requirements, must go through the proper installation and post-installation commissioning and testing concluded .
        (3) Cranes high security requirements, safety devices must be complete and properly installed, in order to achieve a reliable, flexible, and accurate technical requirements.
        (4) based on the importance of safe working  bridge gantry crane   the crane was put into use in order to meet the operational requirements of various loads, it must be conducted according to the provisions of the crane load, full load, overload static and dynamic load tests. These tests must be the operating state of the crane mechanism or specific for a stationary state. This requires the crane load test after installation only after the transfer of use.
        (5) the crane wire rope and other flexible member, and many other parts will occur in some of the initial elongation under load, deformation, loosening. It also requires the crane crane installation, commissioning loaded after correction for repair, adjustment, handling and fastening. Therefore, we must do a good job crane installation, commissioning, speed and a series of work in order to ensure the future safety of the  hoist gantry crane  normally used.

Construction machinery crane operation details

Construction machinery  bridge crane  is one of the more common models. Hydraulic cranes are generally powered with various hydraulic devices. Operation should pay attention to safety when lifting operation the following precautions:
A crane manufacturers reminder: before the operations, shall determine the hydraulic oil tank level window, whether the requirement to add a little less than the prescribed engraved line, it must be supplemented. Come on, be sure to filter through fuel injection, and very careful not to sneak into different grades of oil or water impure character.
2, the filter cartridge after 250h at work, should be checked, if necessary, cleaned or replaced.
3, the hydraulic oil tank should be every two weeks from the bottom drain port clear water and impurities once, and replacing all the hydraulic oil every year. Environment, especially when the bridge gantry crane  in use when operating under adverse conditions, the oil change interval should be shortened accordingly.
4, various valves in the hydraulic system has been adequately tested before leaving the factory, and has adjusted the pressure and flow, must not casually touch.
5, various parts, in particular a hydraulic system, each device are attached to avoid dirt. After the job,gantry crane must take the dust, oil removed.

2013 China's construction crane will be re-tested

24th Dongguan City building housing the Bureau issued "on the strengthening construction  gantry crane  safety supervision and management of the notice", requiring all construction crane property unit to the unit immediately construction crane to conduct a thorough examination, a national command eliminated or prohibit the use of more than the prescribed useful life or not up to the technical standards for safety and must be scrapped, in addition to the "Notice" also appear explicitly eight kinds of situations, you must re-inspection.

In addition, the City building housing the Bureau request the construction units to strengthen management of construction crane inspection, appeared eight kinds of circumstances construction  bridge gantry crane ,  and use the appropriate qualifications to be entrusted with the inspection agencies to re-inspection, after passing be put into use. These eight scenarios include: on-site installation to achieve maximum independence height; inspection period from the last full year when; downtime idle time full 90 days to regain use; through modification or overhaul; natural disaster or a security accidents, may make structures or institutions, and security guards suffered damage and so on.

In addition, the Municipal Housing Board also requested towns Street (Park) Planning and Construction Office (Bureau), safety supervision agencies in the supervision and inspection found construction crane there may not rent, use or should be scrapped, to the original authority for filing cancellation formalities, should be immediately ordered to stop illegal activities related units,hoist gantry crane in strict accordance with the provisions implementing misconduct offense, and shall be brought to the Urban Construction Bureau for administrative penalties.

Special equipment have been carried out around the special rectification

AQSIQ has issued a circular asking all localities to carry out special equipment troubleshooting, and lifting machinery special rectification actions to further implement the special equipment of enterprises the main responsibility for security management,jib crane inspection agency's technical gatekeeper responsibilities and quality inspection departments, according to regulatory responsibility, special equipment to promote further improvement in the security situation.

The range of special equipment troubleshooting, petroleum, chemical, metallurgy, nonferrous metals, electricity, water, construction and crowded places and serious accidents have occurred in recent years in the industry. Factories, docks, garages and out buildings, railways, transport, water and thermal power for use within the construction site crane is lifting the focus of special rectification, accidents, many hidden dangers, weak management and other special equipment will also be included in the scope of the investigation and remediation work.

According to the State Administration of Quality Supervision of Special Equipment Safety Supervision Bureau relevant person in charge,gantry cranegantry crane the troubleshooting and rectification action in four stages, the main contents include: Check the use of special equipment safety management enterprises according to law to implement the main responsibility for the situation; crack down on undocumented and beyond the scope of manufacturing, installation, alteration, repair, and rental license, refusing Supervision, Inspection and other offenses; resolutely ban undocumented units with manufacturing, installation, alteration, repair equipment, and severely punish not legally registered to use, unlicensed operation, Extended not check, no security technology files and other illegal activities; severely punished ultra approved scope inspection, testing undocumented workers do not follow safety procedures inspection violations; seriously do not follow the correct procedures for licensing, registration is not timely, not conscientiously perform their duties of supervision and inspection and other misconduct.

Special Equipment Safety Supervision Bureau official also stated otherwise, "crane safety monitoring requirements" apply to housing construction sites and municipal engineering construction site with crane manufacture, alteration, repair, inspection and supervision and inspection. However, the Housing construction sites and municipal engineering construction site with crane installation, use the supervision and management, according to the relevant laws and regulations implemented.

The troubleshooting and rectification action will be divided into four phases, June 15 is arranged layout stage,bridge gantry crane local quality supervision departments should actively coordinate with relevant departments to develop local troubleshooting and rectification work programs and organizations to mobilize work. After self-correction stage, supervision and inspection phase and the "looking back" and then check the stage will allow the entire monitoring process continues until November 1.

Quality inspection departments relevant responsible person said, through the special equipment and lifting machinery troubleshooting, special work, firmly lifting high accident trend down, ensure the completion of the State Security Committee issued special equipment accident control targets.

Crane turned to heavy investigation

1 Check the hydraulic oil quality
If the hydraulic oil deterioration, the gap will steering pump leakage increases, in turn cause the system pressure is low. Open the fuel tank inspection, normal quality hydraulic oil, oil is plentiful.
2 Check the steering valve with steering cylinder
If the steering valve sticking, its performance should be turned to the heavy side, the other side turn to normal. Steering axle with the  jib crane  outrigger top up, check clearances and slide steering valve spool volume is normal, indicating steering valve trouble.
Still steering axle jacking state inspection steering cylinder position, and found a good appearance of the hydraulic cylinder, and the active state and the normal stroke volume, thereby indicating that the hydraulic cylinder intact.
3 Check the steering pump
Start the engine, steering pump flowlines touch vibration sense, which illustrate the tubing pressure oil flow steering pump is working properly.
4 detection system pressure
Maximum speed of the engine does not turn the steering wheel, the system pressure should be 2.8 ~ 3.2MPa, the engine idling state, the system pressure should be 2.0 ~ 2.1MPa. The results do not turn the steering wheel, the engine idling, the measured system pressure is only 1.2MPa,gantry crane the maximum engine speed when the system pressure is reduced to 1.0MPa, significantly lower than the nominal steering pressure 2.8MPa. This preliminary determination is due to the heavy steering steering system pressure is insufficient. The reason may be turning vent valve, check valve worn or faulty steering pump.
After further analysis: the crane is not running, the steering valve is also no action under the premise of improving the speed of the engine throttle, the system pressure is lower than the idle state, should turn to vent valve, check valve wear nothing is likely to be caused by poor steering pump oil into the.
5 Overhauling filters
The aircraft steering hydraulic tank from the tank 1, the oil filter 2, a spring retainer 3, spring 4, spacer 5, filter plate 6, the fuel tank cap 7, into the oil filter 8, bolts 9 and other components,bridge gantry crane such as shown in the drawings.
Remove the oil filter 2 will come out and found it to be blocked by dirt. The oil filter 2 retest thoroughly cleaned after loading machine, the fault disappears.

Mechanical fasteners market development forecast

According to "" Twelve Five "Machinery Industry Development Master Plan," "Twelve Five" period machinery industry to maintain stable and healthy development, industrial output value,gantry crane industrial added value, main business income of an average annual growth rate remained at around 12% growth in high-end equipment to be higher than the industry average growth rate more than doubled. Currently, the machinery industry supply and demand trends generally stable, however, the specific sub-sectors of the supply and demand situation will be further divided.
⑴ high-end CNC machine tools, heavy equipment, marine, precision basic parts, power transmission equipment and electrical automation equipment and other machinery sub-sectors due to its high technical barriers and difficult to shorten the production cycle, resulting in production capacity is limited, and power grid construction, new energy accelerate the development of downstream demand also makes a substantial increase,bridge gantry crane so the performance of the downstream demand growth faster than supply growth, these industries demand remains strong for fasteners.
⑵ textile and garment machinery, packaging machinery, Hardware Tools, power equipment and other machinery sub-sectors although no obvious increase in production capacity, but because of the downstream industry boom fell significantly, severely shrinking demand, resulting in oversupply, tight these industries firmware demand declined.
⑶ in the agricultural field, "Twelve Five" period tractor, rice transplanter, harvester and a series of agricultural machinery production value will reach 250 billion yuan, the estimated annual demand for various types of fasteners 150,000 tons, the output value of about $ 2 billion .
⑷ in the field of mechanical engineering, "Twelve Five" period of construction machinery loaders, excavators,hoist gantry crane rollers and other products of social ownership will reach 60 million units, annual sales of 50,000 units, the expected demand for high-strength fasteners 2-3 tons.

Future container cranes container throughput rose steady demand

As the rapid growth of international trade and the gradual increase in the rate of containerization, the global container throughput in 2000 from 200 million TEU to 2011 TEU over 500 million,eot crane an average annual compound growth rate of 12%; Meanwhile, the domestic port container throughput from 20 million to 164 million TEU TEU, an average annual compound growth rate of nearly 30%. Affected by the financial crisis, in 2009 the domestic port container throughput fell by 6% growth in 2010 and 2011 to 18.85% recovery, 11%.jib crane From the port distribution point of view, in 2005 after Inland port container throughput growth of more than 20 percent, faster than the coastal port container throughput.
The next few years, the global container throughput compound annual growth of 8%; taking into account the needs and update new demand is expected to average demand quayside 500, RTG 1000 units. According to "Container Handling Equipment Industry Report," the statistics, China is expected to scale coastal port container throughput in 2020 plan year 2010 actual throughput growth of 190% to 340%, mainly inland port container throughput in 2020 plan year 2010 actual throughput increase of 150% to 1000% "Twelve Five" period, China and quay  gantry crane  tracks the total market capacity will exceed 1,200 units and 800 units.

Sensors on the crane

Cranes with a variety of models, every day all over the world to complete a lot of weightlifting work, but unfortunately accidents often occur in body weight may lead to even tilt turn,overhead bridge crane some accidents are devastating. Investigation of the accident many conclusions drawn, a consensus is that if before the accident near the operator can get some form of warning, most accidents can be avoided.

Typically, you need to install the sensor on the crane payload force of gravity measurements. Force in accordance with the way the load pressure and tension of the points, the measurement is also somewhat different sensors required, installation is also quite different.
If you are under pressure the way, you need to be measured using pressure sensors, then should the pressure sensor mounted on the fixed pulley shaft down. This installation method requires crane structure has space to accommodate a pressure sensor, or we need to change equipment,bridge gantry crane change equipment costs are generally significant.

If it is stretching the way, you need to use force sensor, then should the tension sensor installed in the lower pulley from the equalizer into the rope around the rope and pull sensor chuck fastening, does not allow slippage. This approach does not change the mobile device, but only for the fixed pulley block pulley equilibrium situation.

Tilt sensor module on the application of the crane as in the excavator, are primarily used in the crane lifting arm and chassis leveling system which.

Tilt sensor module in the application of the  gantry crane  lifting arm is mainly because a guarantee of safety considerations when operating, so that safety systems in the event of security warning before the accident could have the effect. To reduce accidents, manufacturers have developed some safety systems: Safety load monitors, these sophisticated real-time monitoring system can change the crane. In order to make this system work is a necessary measure is also critical boom angle (BoomAngle), this role is the maximum range is 90 degrees (+ / -45 degrees). It is used to measure the angle sensor.

At the same time, requires a lot of equipment for the measurement of time, mainly used in testing, maintenance and alarm system. In order to ensure high quality standards, product every part of the production process are strictly monitored, and each timer prior to delivery are 100% functionality and accuracy of detection.

Overload caused by tower crane accident

a, lifting more than the rated lifting torque, torque limiter damage, demolition, no adjustments or not regularly check failure caused the accident caused by torque limit. Such incidents more, after an accident caused damage as well. As we all know, the uneven quality of tower bridge gantry crane  drivers, many drivers think that the tower crane has certain insurance factor, super point out it does not matter. Knowing tower crane safety factor is to adapt to different working conditions established. An overload does not matter, do not overload the two incidents, accidents are not only feel germination, but as an experience, even as a kind of bragging: "provisions  jib crane  arm end 1t, 2t I'm hanging on nothing." And I wonder if the disaster is quietly coming.
Comments: tower crane load moment limiter is the most critical safety devices should be regularly maintained, adjusted checked.
b, torque limiter malfunction, night lifting, heavy lifting or hoisting rope caught building or unknown object, causing momentary tower gantry crane  tower crane unloaded suddenly overloaded or cause accidents.
Comments: The night blurred vision, easily misjudged; Driver fatigue time jobs, there is often "Early End live, early rest" paralysis and luck.

Specialized metallurgical bridge crane in the steel production process can participate in a particular process operation

Specialized metallurgical  gantry crane  bridge crane with common basic structure similar to, but in lifting a small car is also equipped with a special working body or device. This crane is characterized by frequent use of the work, conditions, higher level work.

There are five types.
① casting crane: injecting molten metal mixer for lifting, lifting steel furnaces and continuous ingot steel injection equipment or ingot molds and other purposes. Main car lifting ladles, ladles, Vice car to flip and other auxiliary work.
② clamp crane: the use of high-temperature steel ingot clamp vertically lifted onto a soaking pit furnace, or put it out into the car shipped ingot.
③ off the ingot cranes: for the ingot from the ingot mold forced prolapse. Small car off the ingots have a special device, way off the ingot mold according to the shape of the ingot:Steel crane Some off the plunger pressed ingot ingot crane, lift the ingot mold with tongs; some with tongs pressed ingot mold, with the tweezers lift ingots.
④ charging crane: used in the open-hearth furnace charge added. Lord of the column with the bottom of the car to pick rod for stirring bins and place it into the furnace. The main column is rotatable about a vertical axis of rotation, pick rod can swing up and down and swing.hoist gantry crane Vice trolley for furnace repair and other auxiliary operations.
⑤ forging crane: with forging hydraulic press used with large workpieces. Main car hanging on a hook turn special feeder to support and flip the workpiece; Vice trolley for lifting workpieces.

bridge crane hoisting installation package

General overhead crane: including hook  overhead gantry crane , grab crane, magnetic crane, dual overhead cranes, bridge cranes with three. Its hook type spreader, grab, electromagnetic sucker type in one or both of which two, three. General overhead crane is widely used in indoor and outdoor warehouses, factories, docks and open storage yard, etc.,

(A) lifting
     And lifting equipment according to the site conditions, decided to use slice lifting, then again in the rail beam assembly solution. According to gantry crane  lifting height, single girder and trolley assembly weight, the choice with enough tonnage truck crane lifting.
     1. The first conductive side girder beams tied good, in the main beam of sufficient length cable ends faculties, slowly lifting 200-300mm rear brake.
     2 Check the lifting rope is solid.
     3 When double girder crane slowly lifted, with the ends of the main beam control cables lifted from stable, and to ensure that no interference with other nearby buildings. Lifting crane to over conductive side rail height adjustments to the installation location girders,  overhead gantry crane  slowly put down.
     4 In the conductive side of the main beam at the wheel brake with wood, and in the end beam interface pad with a real sleeper.
     5 tying drive side girder lifting, lifting to a certain height in the main beam Xiadian bracket, the driver chamber to move the drive side main beam main beam positioning hereinafter connection.
     6 would drive with cab side girder lifting to a certain height, with a cable to adjust it to the installation location.
     7 bolts to connect the two main beams, as required symmetrical fastening bolt group.
     8 Remove the crane slings and sleepers.
     9 lifting trolley, the trolley bridge crane to track.
(Two) auxiliary equipment installation
     1 lifting maintenance hoists, and make the main beam welding firm.
     2 Install end beam railings, railing trolleys, carts moving side railings, racks and vertical conductive side railings, small transport cable slip line.
     3 car conductive mounting bracket, inclined ladders and platforms.
     4 Install the hook, wire rope rope rope fastening plate.
     5 Installation buffer meet.
     (Three) installation of electrical equipment
     1 in accordance with the electrical master plan, installation of all electrical equipment and components.
     (2) mounted on the control panel to go on stage (box), resistors and other heavy equipment, you should try to make the bracket firmly in taking NTU lap stretch, the resistors should be as close to the control panel (box), the coupling shortest wire.
     3 resistors should be along the direction parallel to the main beam placement, resistors Diego installed does not exceed 4 boxes.
     4 Follow the electrical schematics, put the line will connect all the electrical equipment and components.
     5 wire should go line pipe (trough), line pipe outlet should be added rubber sheath, all the ends of wire numbers on the design drawings shall be well marked for inspection.
     6 cable is mounted on the pulley, the cable hanging under suitable length, uniformity, tackle flexible movement.
     7 Where a crane on the exposed conductive parts accessible due protection.
     8 After checking the wiring is correct, power debugging.

     The above is for your general details of bridge crane hoisting installation package.

Gantry cranes at work matters needing attention

 Gantry cranes at work matters needing attention:
     1, gantry crane lifting weights first class (or the load reaches the maximum weight) should be hanging height of 0.5 meters from the ground after the heavy down again, check the brake performance is indeed acknowledged on the list, then normal homework.
     2, the operator of the  gantry crane  homework, homework should be delineated on the following sound the alarm bell. (A) lifting, landing weight; starting big car when driving; (2) gantry crane with clear line of sight through, to continuously-ringing alarm; (3) eot crane  with close cross inside another crane. (4) when lifting heavy objects close to the people.
     3, the operation should be run in the unified command signal delineated.
     4, work in a power outage, should handle all of the crane controller placed in the "zero" position should be checked prior to re-work the crane movement is normal.
     5, large gantry crane, dolly in the normal homework, is strictly prohibited to open anti-vehicle parking brake; transform large trolley movement direction, the handle must be placed in the "zero" position, the agency completely stopped after the operation in order to reverse drive.
    6, there are two hook gantry  bridge crane ,  in the main, auxiliary hook for hook height with time as well as two similar, main and auxiliary hook homework alone must avoid two hooks collision.

Crane lifting height limiter

  Gantry  bridge crane  hoisting mechanism shall be fitted with lifting height limiter. Driven by an internal combustion engine, the middle of no electrical, hydraulic, pneumatic and other transmission links and direct mechanical connection hoisting mechanism, can be equipped with lights or audible warning device to replace the limit switch.
       When the  gantry crane  extract device design requirements up to the upper limit position, the lift should be immediately cut off the power source. In the upper limit position, the height should be sufficient spare to accommodate up brake stroke requirements. In exceptional circumstances, such as lifting the molten metal, should be installed to prevent overtravel hoisting the second stage lifting height limiter, the second stage lifting height limiter should be breaking higher a power source.
       When necessary, should be set down depth limiter; when gantry crane extract device design requirements down to the lower limit position, should be able to immediately cut down the power source.
        bridge gantry crane  above the direction of movement after the power is turned off, you can still carry the opposite direction (the second stage lifting height limiter exception).

Procedures outlined details of gantry crane

Introduced in front of  gantry crane  safety procedures, and today we have to introduce its rules, though a small word, but the content is completely different, crane operating procedures including the work before work and after work these three part, as follows.
First, before work
1 brakes for cranes, hook, wire rope and safety devices and other components according to the requirements of the check card, it was discovered anomalies, should be excluded.
(2) The operator must take the stage or in the confirmation on track when no one can close the main power supply. When the power supply circuit breaker locking or signs, the persons concerned should be removed only after the original closing the main power supply.
Second, the work
1 class first lifting weights (or the load reaches the maximum weight) should be suspended height of 0.5 meters from the ground after the heavy down again, check the brake performance, reliable after confirmation, then normal operation.
(2) the operator of the  eot crane  operation, should be required for the following operations-ringing alarm:
(A) lifting, landing weight; starting big car when driving.
(2) clear line of sight through traveling crane, to continuously-ringing alarm.
(3) Cranes with close cross inside another crane.
(4) when lifting heavy objects close to the people.
(5) operation running under a unified command signals should be.
(3) Operating a power outage, should handle all of the crane controller placed in the "zero" position should be checked prior to re-work the crane movement is normal.
4 large crane, trolley during normal operation, the parking brake open anti prohibited; transform large trolley movement direction, the handle must be placed in the "zero" position, the agency completely stopped, can the reverse drive.
5 There are two hooks of the crane, in the main, auxiliary hook for hook height with time and the two are similar, the main and auxiliary hook must work alone, so two hooks collision.
6 two allowed two hook crane hook lifting two objects simultaneously; does not work in the case adjust the brake lifting mechanism.
7 are not allowed to use extreme position limiter parking is prohibited in the case of a load lifting mechanism to adjust the brake.
Third, work
1 would be elevated to a certain height crane hooks,overhead gantry crane carts, trolley stops at the specified location, the controller handle in the "zero" position; Pull off the protective box switch handle, cut off the power.
(2) carry out routine maintenance of cranes.
3 do shift work.