The bridge crane is a lifting equipment that is horizontally framed over the workshop, warehouse and material yard for material lifting. Because its two ends are located on tall concrete columns or metal supports, it looks like a bridge. Bridge construction hoist
s are widely used in engineering and production, but many problems will occur during use. During the maintenance process, the welding deformation of the bridge crane was found, and the control of the deformation became an urgent problem to be solved. Bridge crane manufacturers provide you! The bridge crane is a lifting equipment that is horizontally framed over the workshop, warehouse and material yard for lifting and transporting materials. Because its two ends are located on tall concrete pillars or metal supports, it is shaped like a bridge. Bridge cranes are widely used in engineering and production, but many problems will occur during use. During the maintenance process, the welding deformation of the bridge crane was found, and the control of the deformation became an urgent problem to be solved. Because the cross-sectional shape of the bridge crane is a typical box girder structure, its welding seam is many, the structure is complicated, and the welding stress and deformation are large. If a reasonable design and construction process plan is not adopted, deformation will occur during the welding process, which will seriously affect the welding quality, and even cause the structure to be unable to be installed and used correctly. The most important thing to control welding deformation is to fully understand the cause of the deformation, which is conducive to taking the most appropriate measures according to the specific situation to reduce the degree of welding deformation to the minimum, so that the structure can be used correctly and reasonably, and better Improve various performances of bridge cranes to provide guarantee for better construction. Under normal circumstances, the main reason for welding deformation of bridge cranes is uneven heat input. The amount of heat input is closely related to the material and structure of the welding. Material factors and structural factors affect the movement of the metal around the heat source, causing it to be affected by both internal and external binding forces, resulting in welding materials. Stress deformation. Welding deformation mainly includes shrinkage deformation (longitudinal shrinkage and lateral shrinkage), bending deformation, angular deformation, wave deformation, twisting deformation and other types. It is reflected in the external structure of the bridge crane that shows local uplift, distortion, bending and twisting. There are many reasons for these problems during the welding process. For example, the size of the weld seam is not accurate enough, the number of weld seams does not meet the predetermined standard, the welding position and the design position have a large error, and the welding material The thermophysical properties of the steel are not strong, the construction process is not conducive to achieving the best welding state, the selection of welding parameters, etc., each specific link must be carefully grasped to achieve the desired effect. Bridge Crane Selection Hoisting Machinery Equipment Co., Ltd.
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