Title:
HYDRAULIC SHOCK ABSORBER AND RAILWAY VEHICLE
Document Type and Number:
WIPO Patent Application WO/2021/143893
Kind Code:
A1
Abstract:
A hydraulic shock absorber, comprising: a fluid storage cylinder (110); a hydraulic cylinder (120) sleeved in the fluid storage cylinder (110); and a piston rod component (130) passing through the fluid storage cylinder (110) and provided with the hydraulic cylinder (120), wherein a first end (130a) of the piston rod component (130) is provided outside the fluid storage cylinder (110), and a second end (130b) of the piston rod component (130) is provided in the hydraulic cylinder (120), and is driven to perform reciprocating motion along the length direction of the hydraulic cylinder (120); a piston component (140) is provided on the second end (130b) of the piston rod component (130), and divides the hydraulic cylinder (120) into a first chamber (120c) and a second chamber (120d); the piston component (140) comprises a first damping valve group and a second damping valve group; the first damping valve group is driven by pressure to control the one-way stepped on-off from the first chamber (120c) to the second chamber (120d); the second damping valve group is driven by pressure to control the one-way stepped on-off from the second chamber (120d) to the first chamber (120c). The shock absorber brings better shock absorbing effect. The present invention also relates to a railway vehicle.
Inventors:
PANG LINCHUN (CN)
CHEN CHUNPENG (CN)
LIU CHANG (CN)
FANG ZHAOGEN (CN)
ZHOU XIAOZHI (CN)
CHEN CHAO (CN)
CHEN CHUNPENG (CN)
LIU CHANG (CN)
FANG ZHAOGEN (CN)
ZHOU XIAOZHI (CN)
CHEN CHAO (CN)
Application Number:
PCT/CN2021/072368
Publication Date:
July 22, 2021
Filing Date:
January 18, 2021
Export Citation:
Assignee:
CRRC CHANGZHOU DIESEL ENGINE COMPONENTS CO LTD (CN)
CRRC QISHUYAN INST CO LTD (CN)
CRRC QISHUYAN INST CO LTD (CN)
International Classes:
F16F9/516; F16F9/19
Foreign References:
| CN107143598A | 2017-09-08 | |||
| CN107143598A | 2017-09-08 | |||
| CN2503264Y | 2002-07-31 | |||
| CN108150582A | 2018-06-12 | |||
| CN205064679U | 2016-03-02 | |||
| DE102016208632A1 | 2017-11-23 | |||
| JP2002061699A | 2002-02-28 |
Attorney, Agent or Firm:
CHINA PATENT AGENT (H.K.) LTD. (CN)
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