YAW DAMPER, YAW DAMPER SYSTEM AND CONTROL METHOD THEREFOR, AND RAILWAY VEHICLE

WIPO Patent Application WO/2023/202021

A1

A yaw damper (10), a yaw damper system and a control method therefor, and a railway vehicle. The yaw damper (10) comprises a hydraulic cylinder, the hydraulic cylinder comprising a cylinder (11) and a piston (12), the piston (12) being slidably provided on the cylinder (11), and dividing an inner cavity of the cylinder (11) into a rod cavity and a rodless cavity, an oil path which is communicated from the rodless cavity to the rod cavity in a one-way mode being provided at the head of the piston (12), and three parallel branch oil paths being provided between the rod cavity and the rodless cavity outside the cylinder (11), wherein a first switch valve (21) and a damping valve (23) are provided on a first branch oil (a1), an electromagnetic proportional valve (31) is provided on a second branch oil path (a2), and a second switch valve (41) is provided on a third branch oil path (a3); and further comprises an oil storage tank (52) used for supplementing oil to the rodless cavity. The working modes of the yaw damper (10) comprise a semi-active control mode, a passive mode, and a small damping mode, different working modes can be switched according to different running modes of the vehicle, and the adaptability of the vehicle to different treads is improved.

CAO HONGYONG (CN)
FENG YANG (CN)
HAN XU (CN)
WANG XU (CN)
ZHANG ZHENXIAN (CN)

PCT/CN2022/127817

October 26, 2023

October 27, 2022

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CRRC QINGDAO SIFANG CO LTD (CN)

F16F9/19

CN114738423A	2022-07-12
CN112648320A	2021-04-13
CN110374950A	2019-10-25
CN102069813A	2011-05-25
CN1699781A	2005-11-23
JP2002054675A	2002-02-20
JPH0882338A	1996-03-26

UNITALEN ATTORNEYS AT LAW CO., LTD. (CN)

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