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Title:
IMPACT-RESISTANT BALANCE OIL CYLINDER HAVING FUNCTIONS OF PRESSURE RELIEF AND BUFFER PROTECTION
Document Type and Number:
WIPO Patent Application WO/2022/016949
Kind Code:
A1
Abstract:
An impact-resistant balance oil cylinder having the functions of pressure relief and buffer protection. The impact-resistant balance oil cylinder comprises a cylinder body (11), a piston (13), a piston rod (14), and a first valve core (21) and a second valve core (51) that slide relative to the cylinder body (11). A closed first air cavity (22) and a closed second air cavity (52) are respectively formed between the two valve cores and inner walls of two opposite ends of the cylinder body (11). A closed first oil cavity (32) and a closed second oil cavity (42) are respectively formed between the two valve cores and two end faces of the piston (13). A first oil cavity oil through hole (33) and a second oil cavity oil through hole (43) are respectively provided in the positions of the cylinder body (11) that correspond to the first oil cavity (32) and the second oil cavity (42).

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WO/2005/026559HYDROSTATIC GEAR
WO/2004/040065DAMPING DEVICE
Inventors:
WAN LIRONG (CN)
YU XUEHUI (CN)
MA DEJIAN (CN)
WANG JIANTAO (CN)
XIN FENGWEN (CN)
LI ZHAOJI (CN)
QI GUOQING (CN)
CHEN BAOLONG (CN)
Application Number:
PCT/CN2021/091362
Publication Date:
January 27, 2022
Filing Date:
April 30, 2021
Export Citation:
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Assignee:
UNIV SHANDONG SCIENCE & TECH (CN)
International Classes:
F15B15/17; E21D15/51; F15B15/20; F15B15/22
Foreign References:
CN112555228A2021-03-26
CN204664021U2015-09-23
CN206144898U2017-05-03
CN207583736U2018-07-06
GB1439504A1976-06-16
DD258047A11988-07-06
Attorney, Agent or Firm:
QINGDAO DING CHENG ZHI JIA INTELLECTUAL PROPERTY LAW OFFICE (CN)
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