Crawling and deviating resistant energy absorbing device

Abstract

The invention provides a crawling and deviating resistant energy absorbing device and relates to the technical field of safety of railway vehicles. One end of a bending-resistant guide pipe is welded at the rear end of a crawling resistant toothed plate, and the other end thereof penetrates through an annular hole in the middle of a mounting seat in interference fit. An expansion energy absorbing pipe is sleeved at the thick-wall position of the bending-resistant guide pipe. One end of the expansion energy absorbing pipe clings to the mounting seat. The crawling resistant toothed plate is of integral structure, a groove is arranged in the middle of the crawling resistant toothed plate, and teeth on two sides are staggered. An external crushing energy absorbing pipe is provided with an integral variable-section housing, two ends of the external crushing energy absorbing pipe are respectively fixedly connected with the rear end of the crawling resistant toothed plate and the mounting seat. The surface of the external crushing energy absorbing pipe is provided with transverse and perpendicular guide holes. The crawling and deviating resistant energy absorbing device can simultaneously function in resisting deviating and bending, combines a crushing energy absorbing mode with an expansion energy absorbing mode, the crushing deformation progresses step by step through the guide holes, and the crawling and deviating resistant energy absorbing device is simple in structure, safe and reliable, and mainly used for passive safety protection of city rail traffic vehicles.

Description

technical field [0001] The invention relates to the technical field of railway vehicle safety, in particular to the technical field of vehicle body passive safety of urban rail transit vehicles. Background technique [0002] At present, the common anti-climbing energy-absorbing device for railway vehicles is to minimize the loss of collision accidents caused by various human errors and sudden changes in the operating environment. During the collision, when the coupler reaches the maximum stroke and shears off, the anti-climbing tooth plate at the end of the vehicle starts to contact and engage to prevent the vehicle from climbing, and the energy-absorbing tube absorbs kinetic energy by crushing and deforming. However, the anti-climbing tooth plates that are in contact during the collision are exactly the same, and can only be fully engaged after the anti-climbing tooth is forcibly dislocated up and down, resulting in a huge vertical bending moment that forces the guide tube ...

AI Technical Summary

Problems solved by technology

However, the anti-climbing tooth plates that are in contact during the collision are exactly the same, and can only be fully engaged after the anti-climbing tooth is forcibly dislocated up and down, resulting in a huge vertical bending moment that forces the guide tube and the energy-absorbing tube to bend. This initial defect Further expansion makes the energy absorption effect drop sharply and cannot effectively prevent the phenomenon of climbing, and the existing anti-climbing energy-absorbing device does not have the anti-deflection function to limit the lateral movement of the vehicle

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