Crawling-resistant absorber, bogie and railway vehicle

Abstract

The invention relates to and provides a crawling-resistant absorber. The crawling-resistant absorber comprises a first cylinder, a second cylinder, an oil guide pipe, a first one-way valve assembly, asecond one-way valve assembly and a damping assembly. A first cylinder cavity is formed in the first cylinder and embedded into the first cylinder, and a second cylinder cavity is formed between thefirst cylinder and the second cylinder. The first one-way valve assembly is in sliding connection with the inner wall of the first cylinder cavity and separates the first cylinder cavity into a firstchamber and a second chamber. The oil guide pipe is arranged in the second cylinder, and is used for communicating with the first chamber and the second chamber. The second one-way valve assembly is arranged between the second cylinder cavity and the second chamber. The damping assembly is arranged at the end, relatively close to the second chamber, in the second cylinder, one end of the damping assembly communicates with the first chamber, and the other end of the damping assembly communicates with the second cylinder cavity. The damping assembly is used for communicating with the first chamber and the second cylinder cavity when the oil pressure is larger than damping force. The invention further relates to a bogie and a railway vehicle. According to the crawling-resistant absorber, thebogie and the railway vehicle, the damping force can be adjusted without demounting the absorber, and the process is simple and convenient.

Description

technical field [0001] The invention relates to the technical field of rail transportation, in particular to an anti-snaking shock absorber, a bogie and a rail vehicle. Background technique [0002] When the running speed of the rail vehicle increases, the bogie will produce a periodic large-amplitude rocking motion in the lateral direction, that is, snake vibration. Severe snaking vibrations will cause instability. Once the instability occurs, the wheels will violently hit the track, and there may even be a risk of wheel derailment, which threatens the safety of the vehicle. The anti-snaking shock absorber can effectively suppress the hunting vibration of the bogie, so as to ensure the safe operation of the rail vehicle below the critical speed of the hunting. [0003] In the traditional anti-snaking shock absorber, the damping device is mostly installed inside the shock absorber, such as the piston or the bottom valve seat. When the damping performance weakens with use, t...

AI Technical Summary

Problems solved by technology

[0003] In the traditional anti-snaking shock absorber, the damping device is mostly installed inside the shock absorber, such as the piston or the bottom valve seat. When the damping performance weakens with use, the damping performance of the shock absorber will need to be adjusted, otherwise It will seriously affect the snaking stability, safety, running stability and ride comfort of rail vehicles.

However, for the traditional anti-snaking shock absorber, it is necessary to disassemble the shock absorber as a whole and take out the damping device separately to adjust the damping performance of the shock absorber, which is inconvenient

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