The traditional two-dimensional CAD for the design of the crane

With traditional two-dimensional CAD design of crane time cycle is long, repeated design, product innovation is insufficient, the engineer's design experience is not very good inheritance, makes the design efficiency of series of products is not ideal. Bridge crane is designed to experience of design, development, evaluation, manufacturing cycle repeatedly, the process time is long, and the design cost is high, the efficiency is low, the risk is big. And the use of modular design, through the component level, generalization and standardization can simplify the product structure, make the product diversification. At the same time using the overhead gantry crane design of gantry crane and 3 d parametric modeling technology, can reduce repeated labor and improve the design efficiency, make products to satisfy user needs. At the same time using an interactive simulation technology, the bridge crane driver's operating system can be virtual simulation, set up the corresponding effects, truly simulate the crane work and working conditions, to predict the potential risks in the working process of the bridge crane, and can improve the work efficiency of bridge crane. bridge gantry crane as interactive simulation tool, has great advantages in terms of interactive simulation. Through the driving of bridge crane operating system in virtual simulation, 3 d model to realize the keyboard control, the man-machine interaction effect.

Bridge crane in horizontal plane in workshop

Bridge crane in horizontal plane in workshop, warehouse, etc, is hanging objects of machinery and equipment, also referred to as the "road" or "crane". Bridge crane is widely used in industrial and mining enterprises, port, wharf, construction site, warehouse, station, bridge gantry crane development, space navigation and so on all walks of life, in the process of our modernization construction plays a huge role. Tin metallurgical industry crane is the main equipment, production plant transport material metallurgy bridge crane has to adapt to bad working environment and high load operation efficiency is high, the level of work, study of bridge crane has a overhead gantry crane significance to the development of metallurgical industry. Profile bridge crane bridge crane is one of the main types of crane, because of its running at high altitude, scope of operation that sweeps across the whole factory area, almost got rapid development. Bridge crane accounted for about 90% of the number of indoor crane, hoisting machinery is the so-called "largest production batch, the material consumption of the product. The classification of the bridge crane in order to adapt to different work situations, bridge crane appeared a variety of types. Currently, depending on the bridge crane structure form, it can be divided into electric single beam cranes, electric hoist bridge crane, gm bridge crane and other types.

Lines exist in electric hoist gantry crane

Crack exists in electric hoist gantry crane on beams, cracks are mainly concentrated in beams and girders connection parts and beam connected to the leg on the parts of the parent bridge gantry crane or weld. 2 causes the crack part stress state is complex, such as bending stress and shear stress and welding stress, both to carry hoisting load and dead weight load overhead gantry crane by the bending stress and shear stress, and at the same time, the operation of the lateral load, big, the car braking inertia load and wind load, and so on. Stress is larger, therefore, the local synthesis with cantilever crane, the load on the cross and cantilever end beam weld on both sides there are alternating stress and angular distortion in the opposite direction, combined with structural reason is easy to produce stress concentration, and therefore part of weld and parent metal under alternating stress and stress concentration susceptible to fatigue damage. Design flaws in the side of the leg on the top of the beam by two independent small box girder (or i-steel) structure, as shown in figure 1. Causes of crack for stress concentration, uneven force and stiffness. 8 of this type of crane in our city in the cracks without exception, the shortest using only 3 ~ 4 months appeared crack, crack of the other in a test cycle. Beams on the independent structure crack distribution material crack, crack on weld beam bending crack.

The starter overrunning clutch

Starter overrunning clutch is the key overhead gantry crane of motorcycle electric starting system, is also a weak link, the startup process directly affects the working performance of the starter motor. Compared with the usual clutch, the axis of rotation to the starter overrunning clutch has advantages of convenient maintenance and low cost, which is widely applied in various types of motorcycles. With the ordinary starter bridge gantry crane clutch driven by an electric fork compared with the workings of a flywheel ring gear meshing axis of rotation to the starter overrunning clutch is to use the starter motor clutch rotation inertia force of its own cause and flywheel ring gear meshing. Therefore, the start characteristics different from those of ordinary clutch start characteristics, and the domestic research is still less. Article set up the axis of rotation to the starter one-way clutch, the mathematical model of the boot process, using MATLAB/Simulink simulation model is set up, the result of the experiment and simulation was consistent, verify the correctness of the model. On the basis of the study the influence of structure parameters on the starting characteristics of the clutch, which provide complete for design and optimization of this kind of new clutch

Double beam bridge crane visual design

Double beam bridge crane visual design: bridge crane is widely used in industrial production process, with the development of the progress of science and technology, overhead gantry crane technology and the increasingly fierce market competition, the quality of the design of the crane and the efficiency is higher and higher demands are proposed. Traditional bridge gantry crane technical personnel in the bridge crane design, especially for the design process requires a lot of manual calculation, drawing, design process repeatedly, long cycle and low efficiency; And the optimization design, often also is not intuitive, is bad to adjust, often cannot meet the needs of the series design or special requirements. We can in the visualization technology of crane CAD design, combined with the optimization, through the program design, improve the design speed, shorten the design cycle, to improve product performance and reduce the production cost of the products series product development design and play an important role in such aspects as non-standard design. Double beam bridge crane of visual design using computer graphics, visualization is to convert data into graphics displayed on the screen, make the process visual indication of methods and techniques.

On both ends of the bridge by running the device directly support in the elevated bridge type crane on the tracks

On both ends of the bridge by running the device directly support in the elevated bridge type crane on the tracks, referred to as the "bridge crane". Shaped like a two-terminal bracing in overhead gantry crane parallel two overhead orbit running single span slab bridge. Lifting mechanism is used for vertical lifting objects, the classification of the bridge crane, gm bridge crane. To grab bridge crane are gm bridge crane. Grab bridge crane, laying track crane truss string directly. The construction bridge gantry crane shall be the same as the continuous crane beam. Heavy duty crane beam, the flange and the column or brake on bit plane passing horizontal force of friction type appropriate USES high strength bolt connections, and BuYi flange connection with brake beam, friction type high strength bolt connection can be used or weld connections.

A computerized model to optimize location of a group of tower cranes is presented

A computerized model to optimize location of a group
of tower cranes is presented. Location criteria are balanced workload, minimum likelihood of bridge gantry crane with each other, and high efficiency of operations. Three submodels are also presented. First, the initial location model classifies tasks into groups and identifies feasible location for each crane according to geometric ‘‘closeness.’’ Second, the former task groups are adjusted to yield smooth workloads and minimal conflicts. Finally, a single-tower-crane overhead gantry crane model is applied crane by crane to search for optimal location in terms of minimal hook transportation time. Experimental results and the steps necessary for implementation of the model are discussed.  Crane location models have evolved over the past 20 years. Warszawski (1973) established a time-distance formula by which quantitative evaluation of location was possible. Furusaka and Gray (1984) presented a dynamic programming model with the objective function being hire cost, but without consideration of location. Gray and Little (1985) optimized crane location in irregular-shaped buildings while Wijesundera and Harris (1986) designed a simulation model to reconstruct operation times and equipment cycles when
handling concrete. Farrell and Hover (1989) developed a database
with a graphical interface to assist in crane selection and location. Choi and Harris (1991) introduced another model to optimize single tower crane location by calculating total transportation times incurred. Emsley (1992) proposed

Electric hoist gantry crane is a kind of electric hoist bridge crane deformation

Electric hoist gantry crane is a kind of electric hoist bridge crane deformation. The electric hoist crane can be divided into electric hoist gantry crane and electric hoist cantilever gantry crane structure of two kinds of forms. Electric hoist gantry crane and can be divided into: the gantry overhead gantry crane and gantry crane. The electric hoist can be divided into the double cantilever gantry crane cantilever gantry crane and two single cantilever gantry crane. Electric hoist crane is divided into a variety of. This q good electric hoist and electric hoist gantry crane main difference is that electric hoist is a small-sized lifting equipment, it is divided into wire rope electric hoist and bridge gantry crane electric hoist. Chain electric hoist is mainly divided into two kinds of imported and domestic electric hoist electric hoist. Wire rope electric hoist is mainly divided into: CD type wire rope electric hoist and MD1 wire rope electric hoist and riot, metallurgy, electric hoist, electric hoist There is a miniature wire rope electric hoist, hoist, multi-function winder.

is laid on the orbits of the horizontal run, constitute a rectangular scope of work

Bridge crane is a bridge in high orbit a bridge typebridge gantry crane, also known as the crown. Bridge crane bridge along the laid on on both sides of the elevated rail longitudinal operation, lifting trolley along the bridge is laid on the orbits of the horizontal run, constitute a rectangular scope of work, can make full use of bridge the space below the lifting materials, from the ground equipment obstacles. The characteristics of the bridge crane can be made on a hook or other fetch device weight implement vertical or horizontal migration in space. Bridge crane including: lifting mechanism, big, the car run institutions. Rely on these institutions cooperate with action, can make the weight in a cube space lifting and handling. Bridge overhead gantry crane, gantry crane, gantry crane, metallurgical and cable crane and so on all is such.