Manufacturing process for three girders of subway

Abstract

The invention relates to a manufacturing process for three girders of a subway. The manufacturing process is used for manufacturing three girders of the subway, and the three girders of the subway include a buffering beam, a traction beam and a sleeper beam, the three girders of the subway are complicated in structure, and multiple components exist, and production line operation in different steps is needed, so that single-process operation is simplified, the duration time is shortened, the step articulation property is enhanced, and the production period is shortened, so that the working efficiency is improved, and the production capacity is improved.

Description

technical field [0001] The invention belongs to the field of manufacturing technology, and in particular relates to a manufacturing process of three subway girders. Background technique [0002] The three major beams of the subway include buffer beams, traction beams and corbel beams. The buffer beams are used to alleviate the longitudinal impact and vibration caused by changes in the traction force of the locomotive or collisions between vehicles during starting, braking and shunting operations. The buffer beam has the function of dissipating the impact and vibration between vehicles, thereby reducing the damage to the vehicle body structure and loaded goods; the traction beam is an important force-bearing part of the vehicle body chassis structure, which plays a very important role in transmitting longitudinal force. important role. And it is connected to the coupler, and the traction force is transmitted through the coupler; the bolster bears all the weight of all parts ...

AI Technical Summary

Problems solved by technology

At present, the process requirements of the three beams are becoming more and more stringent; the requirements for welds are also getting higher and higher. At present, many welds require CPB-CPC2 welds, the inspection level is CT2, and the standard requires 10% non-destructive testing, but The current technology cannot meet the requirements of 100% non-destructive testing. In addition, the weld depth of the corbel beam is large, and multi-layer and multi-pass welding are prone to defects such as insufficient penetration depth and unfused layers; the flatness requirements are high, and the straightness adjustment Difficult to meet market demands

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