Car body and connecting device of side wall and under frame

Abstract

The invention discloses a car body and a connecting device of a side wall and an under frame. The connecting device of the side wall and the under frame comprises a clamping part and a wing plate, wherein the clamping part is in a U-shaped groove structure and matched with the upright column of the side wall; the wing plate is connected with the edges of two side walls of the clamping part and extends towards the outer wall side of the clamping part, and the width of the wing plate gradually increases along the groove length direction of the clamping part. Compared with the prior art, the car body and the connecting device of the side wall and the under frame can increase the adjustment amount between the upright column and the under frame, so that assembly welding process is simplified and forced welding is avoided, the internal stress generated by direct welding between the side all and the under frame is reduced, the connecting strength between the side wall and the under frame is increased, the rigidity and the strength after the side wall and the under frame are assembled are improved, and the welding workload is reduced.

Description

technical field [0001] The invention relates to vehicle body manufacturing technology, in particular to a connection device between a side wall and an underframe. In addition, the present invention also relates to a vehicle body equipped with the above-mentioned connection device between the side wall and the bottom frame. Background technique [0002] The car body of a railway locomotive is usually a cuboid steel frame structure, such as figure 1 with figure 2 As shown, the vehicle body includes a side wall 1a and an underframe 2a, the underframe 2a is the foundation of the vehicle body, and the side wall 1a is a grid frame structure, including cross beams 11a and uprights 12a. [0003] The side wall 1a and the underframe 2a share the load on the locomotive during operation. In order to ensure the safety of passengers, goods and equipment, the structure composed of the side wall 1a and the underframe 2a must have sufficient strength and rigidity. The side wall 1a is The...

AI Technical Summary

Problems solved by technology

[0006] The invention provides a connection device between the side wall and the bottom frame, which is used to solve the defect of insufficient strength and rigidity of the side wall and the bottom frame in the prior art, can improve the connection strength and rigidity of the side wall and the bottom frame, and reduce the workload

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