Hydraulic energy absorption anti-creeper for train

Abstract

The invention discloses a hydraulic energy absorption anti-creeper for a train. The hydraulic energy absorption anti-creeper for the train comprises a piston rod, a piston, an inner sleeve and an outer sleeve. One end of the piston rod is connected with the piston, the inner sleeve is arranged in the outer sleeve in a sealed manner, and damping liquid is arranged in the inner sleeve. The piston can be arranged to be connected with the inner sleeve in a sliding manner, a damping hole is formed in the inner sleeve, and the damping hole is provided with a damping hole blocking device in a sealedmanner. When a collision accident happens to the train, the piston backwards extrudes the damping liquid, when the pressure reaches the threshold value of the damping hole blocking device, the dampinghole blocking device disengages, the damping liquid is extruded to the outer sleeve of a hydraulic cylinder body, kinetic energy of the train is converted into pressure energy and kinetic energy of the damping liquid, and therefore a protection effect can be achieved on a train body and drivers and conductors, and the problem that the impact force level and stability can be hardly taken into consideration at the same time is solved effectively. SPH-FEM coupling simulation shows that the hydraulic energy absorption anti-creeper has the multiple beneficial effects that the impact force stability is high, the maximum energy absorption amount and the impact force level can be adjusted, the unbalance loading resistance is good, and different train collision speed grade work conditions can be met.

Description

technical field [0001] The invention relates to the field of rail traffic buffering and energy absorption, in particular to a train hydraulic energy-absorbing anti-climbing device. Background technique [0002] With the rapid development of the rail transit industry, while improving the active safety of trains, more and more attention has been paid to the passive safety performance of rail vehicles. When the train collides at a high speed, a huge acceleration pulse will be generated, which will lead to serious damage phenomena such as arching, climbing, and overturning of the train, causing large deformation of the colliding vehicle and greatly reducing the living space of passengers. In order to reduce the damage to the car body and the injury of the occupant in the train collision accident, a large energy-absorbing and high-efficiency anti-climbing device is usually installed in the limited space at both ends of the train. [0003] Existing train anti-climbers usually hav...

AI Technical Summary

Problems solved by technology

[0004] (1) Cutting, planing, broaching anti-climbing device: The anti-climbing device has strict requirements on processing technology, and the melting and breaking of the tool is serious, and the reliability is poor

[0005] (2) Foamed aluminum energy-absorbing anti-climbing device: The preparation process of the foamed structural material is complicated and the cost is high, and the shape and size of the cells of the foamed material are not uniform, the arrangement is irregular, and the controllability of its compression is poor

[0006] (3) Metal profile + built-in guide structure: the controllability of compression deformation of this structure is poor, and in the process of compression and formation of wrinkles, the impact force fluctuates greatly and the energy absorption efficiency is low

[0007] (4) Thin-wall structure + built-in composite material drawer structure: this structure is heavy and has poor anti-eccentric load performance, and the anti-climber is prone to partial load failure in the initial stage of train collision

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