Gantry crane

Is an important branch of general sino hoist machinery , as stevedores to reduce labor intensity and improve the conditions of workers to operate and improve the production capacity of loading and unloading of large lifting and handling equipment , widely used in the open-air yard , storage terminals , railway stations , construction sites and other places. With economic development , it is not only occupies an important position in the national economy , but also in the field of social production and life are also expanding. Main beam is the main force component gantry crane under load , will produce under torsion deformation, trolley tracks a certain slope, so the car climbing resistance generated by the main hoist gantry crane beams running across the middle to the ends , it may cause motor overload or gnawing different degrees rail , seriously affecting the crane to work, and even lead to accidents. Currently, the way to solve such problems in the industry are designed and manufactured the crane when the main beam geometry on a certain arch . In fact , this is also not reasonable arch curve , the same slope to overcome considerable resistance because when the car is running near the legs , and, after working for some time on the camber deformation will gradually reduce , or even disappear. This paper attempts to take advantage of changes in the height of the main beam deflection legs to compensate for deformation under the influence , combined with the finite element analysis software ANSYS simulation , and achieved the expected results.