To improve the national economy of hoisting machinery

Hoisting machinery sectors of the national economy to improve labor productivity, shortening production cycle and reduce production cost, should not be underestimated role, and therefore is widely used in various types of production enterprises. The pros and cons of hoisting machinery manufacturing quality and use of security technology condition quality directly bridge gantry crane the state property and the safety of life of the masses. In order to strengthen the safety supervision of special equipment, to prevent and reduce accidents, guarantee the people life and property safety, promote economic development, 373 decree of the state council has issued a "special equipment safety supervision regulations", made clear of overhead gantry crane equipment in the design, manufacture, installation, use, inspection, maintenance, renovation and other aspects of the safety supervision management. 

The crane system's work efficiency

The swing on the one hand, lowers the crane system's work efficiency, on the other hand may lead to load with the operator or other objects collide cause casualties or damage. Therefore, many scholars in view of the bridge crane control system for a overhead gantry crane amount of research work: on the one hand require car quickly and accurately reach the target location, on the other hand it also requires can effectively restrain the load swing. The most commonly used open-loop bridge crane control method is the Input Shaping (Input Shaping), but this bridge gantry crane of method for system parameter precision demand is higher, so more and more scholars closed-loop control is used to solve the problem of oscillation inhibition and car positioning. .

Simple electric hoist gantry crane is a crane

Simple electric hoist gantry crane is a crane, which has two kinds of single and double beam. Because of its simple structure, easy manufacture, light weight, low cost, easy installation and maintenance overhead gantry crane obtained the considerable development, widely used in industrial and mining enterprises, railways, docks, warehouses, material yard and other places. Because of electric hoist gantry crane structure is simple, however, in the design, production, installation, inspection process, such as failure to cause enough attention. In the electric hoist gantry crane in use process, if the defect of leg connections, such as fracture hidden danger of overturning bridge gantry crane occur. As a result, the examination link, pay attention to the electric hoist gantry crane leg installation quality inspection, is to ensure production safety, prevention of the accident is an important guarantee. Example: in 2010, the zhuhai YiMenShi inside some temporary steel structure workshop crane accident, at that time, the operators are preparing to lifting items, items in lifting has left the ground, the crane suddenly overall tilt to one side leg, fortunately, at that time the next workshop are not present in more than 20 workers, no casualties at the scene. Accident analysis accident lifting main parameter table 1 accident hoisting main parameter table type MH16-22 A5 rated lifting weight 16 t lifting speed 8 m/min lifting height of 6 m span 22 m working-level A5 cart speed 20 m/min.

Imported equipment characteristics and use of electrical equipment maintenance

The characteristics of the imported equipment electrical devices and the basic situation of imported equipment in operation and maintenance characteristics and basic situation in operation and maintenance of electrical devices TengBaoYu (liaoning at liaoning 122009) are introduced in this paper introduced the main characteristics of complete sets of overhead gantry crane electrical devices, problems found during the use and maintenance experience. The article points out that the advanced technology and equipment must have the corresponding staff, management system and accessories to ensure corresponding, to give full play to the introduction of device of high efficiency, high quality. overhead gantry crane trade from our factory in the UK Deng Lupu international engineering co., LTD., has introduced the production of 150000 sets of full load of steel wire radial tire production line, early in 1989 through the national acceptance. Since putting into production, from five years of operation, equipment and pipe is analyzed.the achieves a higher level, the scale of production to meet the design basic ability. Actual use prove that these imported equipment is advanced, operation is reliable. 1 the characteristics of the imported equipment electrical devices 1.1 reliable these imported equipment more than a dozen companies from six countries, mixer, vulcanizing machine, inspection and testing equipment, a total of more than 50 Taiwan (sets), all products for the mid - 80 - s, technically mature, driving scheme is reasonable, and has been used in some countries, therefore, to run the reliability is high. The quality of electrical device is stable, reliable, electrical components comply with IEC standard.

Imported equipment characteristics and use of electrical equipment maintenance

The characteristics of the imported equipment electrical devices and the basic situation of imported equipment in operation and maintenance characteristics and basic situation in operation and maintenance of electrical devices TengBaoYu (liaoning at liaoning 122009) are introduced in this paper introduced the main characteristics of complete sets of overhead gantry crane electrical devices, problems found during the use and maintenance experience. The article points out that the advanced technology and equipment must have the corresponding staff, management system and accessories to ensure corresponding, to give full play to the introduction of device of high efficiency, high quality. overhead gantry crane trade from our factory in the UK Deng Lupu international engineering co., LTD., has introduced the production of 150000 sets of full load of steel wire radial tire production line, early in 1989 through the national acceptance. Since putting into production, from five years of operation, equipment and pipe is analyzed.the achieves a higher level, the scale of production to meet the design basic ability. Actual use prove that these imported equipment is advanced, operation is reliable. 1 the characteristics of the imported equipment electrical devices 1.1 reliable these imported equipment more than a dozen companies from six countries, mixer, vulcanizing machine, inspection and testing equipment, a total of more than 50 Taiwan (sets), all products for the mid - 80 - s, technically mature, driving scheme is reasonable, and has been used in some countries, therefore, to run the reliability is high. The quality of electrical device is stable, reliable, electrical components comply with IEC standard.

Imported equipment characteristics and use of electrical equipment maintenance

The characteristics of the imported equipment electrical devices and the basic situation of imported equipment in operation and maintenance characteristics and basic situation in operation and maintenance of electrical devices TengBaoYu (liaoning at liaoning 122009) are introduced in this paper introduced the main characteristics of complete sets of overhead gantry crane electrical devices, problems found during the use and maintenance experience. The article points out that the advanced technology and equipment must have the corresponding staff, management system and accessories to ensure corresponding, to give full play to the introduction of device of high efficiency, high quality. overhead gantry crane trade from our factory in the UK Deng Lupu international engineering co., LTD., has introduced the production of 150000 sets of full load of steel wire radial tire production line, early in 1989 through the national acceptance. Since putting into production, from five years of operation, equipment and pipe is analyzed.the achieves a higher level, the scale of production to meet the design basic ability. Actual use prove that these imported equipment is advanced, operation is reliable. 1 the characteristics of the imported equipment electrical devices 1.1 reliable these imported equipment more than a dozen companies from six countries, mixer, vulcanizing machine, inspection and testing equipment, a total of more than 50 Taiwan (sets), all products for the mid - 80 - s, technically mature, driving scheme is reasonable, and has been used in some countries, therefore, to run the reliability is high. The quality of electrical device is stable, reliable, electrical components comply with IEC standard.

Wire rope electric hoist

Wire rope electric hoist by building height, such as rail type is divided into 14 types. Code types of HSG standard building height, linear rail, rigid bridge gantry crane table code class type of hand trolley type HSJ standard building height, type curve track, hand trolley type HLG hinged connection standard building height, linear rail, rigid connection of sprocket trolley type HLJ standard building height, the curve of orbit, hinged connection of sprocket car type HDG high overhead gantry crane building. Electric hoist can be used as a heavy equipment used alone, a small driving after also can be used for overhead monorail crane. Is a kind of compact structure, light weight, high efficiency and easy operations of lifting equipment. Specifications of wire rope electric hoist by building height, track type can be divided into 14 types. Choose type HLJ its appearance figure, symbol and type, the performance of electric hoist wire rope electric hoist code and type code type HSG standard building height, linear rail, rigid connection of hand trolley..

The tension flange of crane beam

The tension flange of crane beam (or crane extension of tension chord) shall not be welded on the hanging equipment parts, and should not be on the spot at the lighter or welding jig. According to the provisions of the deceleration condition, bridge gantry crane properly selected base of the natural logarithm of multi rope friction wheel lifting equipment, the article conforms to the rated load of the pull wire rope with the friction between the friction wheel pad, raising and lowering design load in working braking coefficient; Force braking. Because in the process of lifting overhead gantry crane work not a - round Angle, degree; To appear empty container operation, in this condition, the rope dynamic antiskid safety factor; Such as emergency braking, according to hoisting rope sliding conditions not allowed by the raise the most unfavorable condition or than in accord with the rated load under the condition of raising and lowering a load side wire rope with light load side the cargo when the brake is more bad. Must, in accordance with big static tension ratio, therefore, the operating conditions for determining dynamic system of lifting equipment to work k - double container hollow container runtime allow dynamic boundary conditions. In addition, the balance weight single container to xu line, reduce the rope dynamic antiskid safety equipment, also according to the conditions on the difference of the counterbalance weight coefficient.

tasks furthest apart are given priority as initial tasks

These initial tasks are assigned respectively to different (crane) task groups
as the first member of the group, then all other tasks are clustered according to proximity to them. Obviously, tasks furthest apart are given priority as initial
tasks. When multiple choices exist, overhead gantry crane running time can be reduced by selecting tasks with smaller feasible areas as initial tasks. The model provides
assistance in this respect by displaying graphical layout of tasks and a list of
the size of feasible area for each. After assigning an initial task to a group, the model searches for the closest remaining task by checking the size of overlapping area, then bridge gantry crane it into the task group to produce a new feasible
area corresponding to shape and size of feasible areas, illustrated in Fig. 9. In this case study, from the data and graphic output, the user may become aware that optimal locations led by test sets 1, 2, and 3(Fig. 3) are the best choices (balanced workload, conflict possibility, and efficient operation). Alternatively, in connection with site conditions such as availability of space for the crane position and ground conditions for the foundation,

Crane (crane) operation normally just four driving and driven wheels

Crane (crane) operation normally just four driving and driven wheels, if the weight is very big, bridge gantry crane used to increase the wheel round ways to reduce pressure. When the wheels for more than four, must adopt balanced articulated frame device, make the crane load evenly distributed on each wheel. Bridge of the metal structure is composed of main girder and end beam, divided into the single main girder bridge and double beam bridge two kinds. Single main girder bridge by single girder and in the end on both sides of the span of beam, double girder frame is overhead gantry crane of two main girder and end beam. Main girder and end beam, rigid connection on both ends of the beam is equipped with wheels, to support bridge run on overhead. Main girder welding on the track, for lifting the car running. The structure of the bridge girder type is more than the typical box structure, four truss structure and vierendeel truss structure. Box structure and can be divided into the right box double beam, partial rail box double beam, partial rail box girder to wait for a few kinds. On track box double beam is widely used in a basic form, main girder by on either side of the upper and lower flange plate and the vertical web, rail car arrangement in the center of the line on the flange, its simple structure, easy fabrication, suitable for batch production, but gravity is bigger. Partial rail box double beam and rail box single girder cross section are ranged from upper and lower flange plate and the thickness of the deputy of web, rail car is decorated in the main web above, the casing short stiffening plate could save, in which partial rail box single main box girder is composed of a wide flange instead of two main girder, the weight is small, but made more complex. Four by four pieces of plane truss girder structure combination into a closed space structure, on the surface level on the truss generally covered by bedplate, weight light, stiffness big, but compared with other structures, appearance size, made more complex, the fatigue strength is low, have less production. Vierendeel truss structure similar to partial rail box girders, is composed of four pieces of steel structure of a closed, in addition to the main web for solid abdomen i-section girder, the other three piece of sheet metal in accordance with the design requirements of cutting into many window, form a vierendeel truss without diagonal, in the upper and lower levels of truss surface covered by bedplate, crane running mechanism and electrical equipment installed inside the bridge, weight is lighter, the overall stiffness is large, it is more widely used in China a type. General bridge crane mainly driven by electricity, generally is in the driver indoor manipulation, also has a remote control. Lifting weight of up to five hundred tons, the span of 60 meters. Simple beam bridge crane, also known as crane beam, its structure is similar to ordinary bridge crane, lifting weight, span and working speed are smaller. Bridge girder is composed of steel and plate steel beams or other simple beam, with chain or electric hoist with simple and easy as lifting trolley car, the car at the bottom flange of the h beam. Can bridge along the orbit, on a high shelf can also be along the suspension in elevated the orbit, below this kind of crane is called suspension girder crane. Special metallurgy bridge crane in the process of iron and steel production may take part in the process of the specific operation, the basic structure similar to ordinary bridge crane, but also on lifting the car is equipped with special working mechanism or device. The working characteristics of this kind of crane is used frequently, conditions, job level is higher.

According to the bridge approach is divided into bearing type and suspension type two kinds

According to the bridge approach is divided into bearing type and suspension type two kinds. The former bridge along the car on the beam of crane orbit; The bridge along the hanging in the workshop crane orbit under the roof. Single girder overhead gantry crane crane, electric two break up. Manual single-beam bridge crane institutions working speed is low, the weight is small, but its quality is small, easy to organize production, low cost, suitable for no power after carrying amount is not big, requirements for speed eot craneproductivity is not high. Manual single-beam bridge crane using manual monorailey troll as a running car, with the hand chain hoist as lifting mechanism, the bridge is made up of main girder and end beam. Main girder with single beams, beam with steel or bending molding steel plate welded.