A rail transit vehicle coupler buffer energy-absorbing device

Abstract

The invention discloses a rail transit vehicle coupler buffer energy-absorbing device. The energy-absorbing device includes a draw bar and a pull rod; the draw bar and the draw bar are connected through a guide rod, and an expansion block is installed on the end of the draw bar facing the coupler tailstock; One end of the crushing tube abuts against one end face of the pull rod, and the other end of the crushing tube forms an inclined-plane ring abutting against the expansion block; the end of the guide rod close to the pull rod has a support platform, and the outer periphery of the support platform The surface is attached to the inner wall of the crushing tube; the crushing tube includes two or more layers of thin-walled tubes sheathed. The energy-absorbing device of the present invention improves the collision energy absorption of the crushing tube and optimizes the energy-absorbing behavior.

Description

technical field [0001] The invention relates to a rail transit vehicle coupler buffer energy-absorbing device, which belongs to the field of vehicle collision. Background technique [0002] The requirement for the crashworthiness design of rail transit vehicles is that the vehicle anti-collision system operates in a reasonable order artificially during the collision process, and absorbs the collision energy as much as possible, so as to protect the safety of passengers and passengers to the greatest extent and reduce vehicle damage. [0003] At present, the anti-collision system of rail transit vehicles is mostly designed at the front end of the vehicle, mainly including coupler buffer devices, anti-climbing devices, variable structure of driver's cab, etc., which is a step-by-step energy absorption process. For example, Chinese patent CN201711487129.X discloses a collision energy-absorbing system for rail trains and rail trains, which provides a collision energy-absorbing s...

AI Technical Summary

Problems solved by technology

[0005] The energy-absorbing thin-walled structure of the bulging crushing tube widely used at this stage is made of thin-walled metal, which mainly uses the bulging deformation of the thin-walled structure to absorb energy, and the load feedback is slow and the load fluctuation is large when it is impacted by a collision. The impact load on the protected car body structure is unstable, and the energy absorption is uneven, and the energy absorbed per unit volume is small.

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