A reusable rail vehicle anti-collision energy-absorbing structure

Abstract

The invention provides a reusable energy absorbing structure for collision preventing of rail vehicles. The structure comprises an impact rod, an outer pipe, a damping structure, a restoring structureand an end base. The damping structure comprises a damping plug, a guide tube, a damping elastic element and an end small base. The restoring structure comprises a restoring piston and a restoring elastic element. The outer tube is of a tubular structure, and the inside of the outer tube is divided into a front cavity and a rear cavity by a partition plate. The partition plate is provided with adamping hole so that the damping fluid can flow between the front and the rear cavities. At least a part of that length of the damping plug is arranged in the damping hole when the damping plug is inthe initial position, and the damping plug can move forward and backward when the damping plug is impinged, a gap is between the thickest part of the radial direction of the damping plug and the damping hole for the damping fluid to flow between the front and rear cavities, and a conductive hole is arranged on the guide tube for the damping fluid to flow in the front and rear cavities. The energy-absorbing structure has good energy-absorbing effect, can reduce the damage to occupants in the secondary collision, and can be reused so as to significantly reduce the cost of the energy-absorbing structure.

Description

technical field [0001] The invention belongs to the field of safety devices for rail vehicles, in particular to a reusable anti-collision energy-absorbing structure for rail vehicles. Background technique [0002] With the development of rail transit, people pay more and more attention to the safety performance of rail vehicles. The current energy-absorbing structure of rail vehicles is mainly based on metal crushing energy absorption, and the structure cannot be used again after crushing. Its mechanical characteristic curve is generally a jagged wavy line with a large peak value, which has a high trigger threshold requirement, resulting in a large deceleration peak value, which is not conducive to the safety of the occupants. [0003] Invention patents CN201610860262.4 and CN201610115228.4 previously researched by the inventor of the present invention both provide a kind of collision energy-absorbing device for rail vehicles. These collision energy-absorbing devices have a...

AI Technical Summary

Problems solved by technology

However, the shock velocity limits that these types of device structures can withstand and the energy levels they can absorb simply do not meet the relevant requirements in the field of rail vehicles

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