Coupler buffering and energy-absorbing device of rail transit vehicle

Abstract

The invention discloses a coupler buffering and energy-absorbing device of a rail transit vehicle. The energy-absorbing device comprises a traction rod and a pull rod; the pull rod is connected with the traction rod through a guide rod, and an expansion block is arranged at the end, facing the coupler tailstock, of the traction rod. A crushing pipe is arranged outside the guide rod in a sleeving mode, one end of the crushing pipe abuts against one end face of the pull rod, and the other end of the crushing pipe forms a slope ring abutting against the expansion block; the end, close to the pullrod, of the guide rod is provided with a supporting table, and the outer circumferential face of the supporting table is attached to the inner wall face of the crushing pipe. The crushing pipe comprises two or more layers of thin-walled pipes which are arranged in a sleeved mode. According to the energy-absorbing device, the collision energy absorption capacity of the crushing pipe is improved, and the energy absorption behavior is optimized.

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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