Railway vehicle chassis boundary beam connecting structure suitable for drum-shaped vehicle body

Abstract

The invention relates to a railway vehicle chassis edge beam connecting structure suitable for a drum-shaped vehicle body, which is characterized in that a chassis edge beam is a full-length roll bending piece, the section of the chassis edge beam is of a groove-shaped structure, and the chassis edge beam is provided with a side surface, an upper wing surface and a lower wing surface, the side surface has an inclination angle consistent with that of a side wall plate; the upper end of outer side of the side surface is provided with an inwards recessed pressing table; the side wall plate is lapped on the pressing table and is welded and fixed in a butt welding manner; a downward vertical flange is arranged at the inner end of the lower wing surface, a vertical plate is welded and fixed between the upper wing surface and the lower wing surface, and the inner side surface of the vertical plate and the inner side surface of the vertical flange of the lower wing surface of the underframe boundary beam are coplanar and serve as a mounting surface of the under-vehicle equipment hanging seat; the upper plane of the underframe beam is flush with the upper wing face of the underframe boundary beam, and the two ends of the underframe beam are fixedly welded to the inner surfaces of the side faces of the underframe boundary beam. According to the railway vehicle chassis edge beam connecting structure, a mode of hanging the boundary beam of the under-vehicle equipment is realized, and the problem of large fatigue stress at the joint of the side wall upright post and the floor is solved;the processing difficulty and the assembling difficulty of the cross beam are reduced; and the weight of a vehicle body is reduced.

Description

technical field [0001] The present invention relates to underframe side beams for rail vehicles, in particular for rail vehicles with drum-shaped bodies. Background technique [0002] For many years, my country's conventional railway passenger cars have always been straight car bodies, using carbon steel plate girder structures. The side beams of the underframe are usually made of 18b hot-rolled channel steel, and the installation of equipment under the vehicle is hung by beams. For vehicles with skirt panels, welding longitudinal beams and mounting seats are required on the chassis. With the rapid development of high-speed vehicles, the requirements for the aerodynamic performance and comfort of vehicles are getting higher and higher. The straight body of medium and high-speed passenger cars is gradually reduced, and the drum-shaped body becomes the mainstream. The installation method of equipment under the vehicle and the installation of skirt panels The way has changed,...

AI Technical Summary

Problems solved by technology

Solved the problem of high fatigue stress at the connection between the side wall column and the floor; reduced the difficulty of beam processing and assembly; reduced the weight of the car body

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