Anti-creeping energy absorption device for train

Abstract

The embodiment of the invention relates to an anti-creeping energy absorption device for a train. The anti-creeping energy absorption device comprises a mounting base, an energy absorption element andanti-creeping teeth; the energy absorption element comprises an expansion pipe, a pressurizing pipe, a hydraulic triggering device and a hydraulic device; the bottom end of the expansion pipe is sleeved on the mounting base; the tail part of the pressurizing pipe is arranged in the expansion pipe; the anti-creeping teeth are mounted at the top of the pressurizing pipe; the hydraulic triggering device is arranged at the bottom of the pressurizing pipe; the hydraulic device comprises a cylinder barrel and a hydraulic ejector rod; after a train is collided, the anti-creeping teeth are meshed with the anti-creeping teeth of a collision train, the anti-creeping teeth and the pressurizing pipe move towards the expansion pipe under the action of impact force, and gas is extruded to generate first reverse acting force; the hydraulic triggering device is connected with the hydraulic ejector rod, and a fluid medium is compressed to generate second reverse acting force; the bottoms of the anti-creeping teeth are connected with the top of the expansion pipe, and the expansion pipe expands and tears, and curls along the mounting base to generate third reverse acting force; and the directions of the first reverse acting force, the second reverse acting force and the third reverse acting force are opposite to the direction of the impact force.

Description

technical field [0001] The invention relates to the technical field of rail vehicle passive safety protection, in particular to a train anti-climbing energy-absorbing device. Background technique [0002] With the rapid development of my country's rail transit, rail transit has increasingly become the first choice for the public with its unique advantages. Due to the characteristics of high weight, large passenger capacity and high operating speed of rail vehicles, safety has always been the primary consideration. Especially in recent years, with the development of science and technology, the speed of trains has been continuously improved, and the safety of rail transit has been paid more and more attention by the public. [0003] Security mainly includes active security and passive security. Active safety mainly uses on-board advanced equipment, sensors, networks, etc. to intelligently identify the running state of the train, and to avoid safety accidents by actively impl...

AI Technical Summary

Problems solved by technology

Since the initial energy absorption forms of the above-mentioned energy-absorbing devices all realize energy absorption through the plastic deformation of materials, there is generally the disadvantage of large initial impact force, which will directly lead to a large initial impact force value, resulting in too large initial deceleration acceleration peak value, thus affecting Hazards to people and train bodies

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