Title:
PARKING BRAKE CYLINDER AND BRAKE CLAMP UNIT
Document Type and Number:
WIPO Patent Application WO/2022/142451
Kind Code:
A1
Abstract:
A parking brake cylinder, comprising a parking cylinder body (1), a middle body (2), a brake cylinder body (3), a mitigation device (5) and a force transmission device (6). A tubular boss (21) is provided in the middle portion of the middle body (2), and a brake lead screw (31) penetrates the tubular boss (21); a parking piston (11) is sleeved on the exterior of the tubular boss (21), and the parking piston (11) and the parking cylinder body (10) form a parking cylinder cavity (10); the brake lead screw (31) is connected to the brake piston (32), and the brake piston (32) and the brake cylinder body (3) form a brake cylinder cavity (30); and the parking piston (11) is connected to the mitigation device (5) by means of a parking nut (12) and the parking lead screw (13), and the parking piston (11) is connected to the brake piston (32) by means of the force transmission device (6). In the parking brake cylinder (100), force transmission between the parking lead screw (13) and the brake piston (32) is controlled by means of the mitigation device (5) and the force transmission device (6), and then application of a parking brake force is controlled.
Inventors:
WANG LINGJUN (CN)
QIN LIWEI (CN)
LI PEISHU (CN)
WANG FENGZHOU (CN)
DIAO YOUBIN (CN)
XU SHAOTING (CN)
QIN LIWEI (CN)
LI PEISHU (CN)
WANG FENGZHOU (CN)
DIAO YOUBIN (CN)
XU SHAOTING (CN)
Application Number:
PCT/CN2021/117057
Publication Date:
July 07, 2022
Filing Date:
September 08, 2021
Export Citation:
Assignee:
QINGDAO SRI TECH CO LTD (CN)
International Classes:
B61H11/06
Foreign References:
| CN112721991A | 2021-04-30 | |||
| CN111071289A | 2020-04-28 | |||
| CN109094604A | 2018-12-28 | |||
| CN2578196Y | 2003-10-08 | |||
| KR20100078751A | 2010-07-08 | |||
| JPH03148372A | 1991-06-25 |
Attorney, Agent or Firm:
QINGDAO LAWSCI INTELLECTUAL PROPERTY CO., LTD. (CN)
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