Commercial vehicle clutch control cylinder
A technology for clutch control and commercial vehicles, which is applied in the direction of clutches, brake types, fluid pressure actuation devices, etc. It can solve the problems of complex connection between piston and push rod, high risk of oil and gas leakage, and impact on durability, so as to eliminate the risk of leakage , reduce assembly man-hours, and improve durability
Active Publication Date: 2020-12-01
ZF COMMERCIAL VEHICLE SYSTEMS (QINGDAO) CO LTD
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Problems solved by technology
[0003] In view of the deficiencies in the prior art above, the purpose of the present invention is to propose a commercial vehicle clutch control cylinder, which solves the problem that the existing clutch booster cylinder adopts a split design, which has a high risk of oil and gas leakage, many small parts, and complicated assembly. The air pipe is prone to failure, and the connection between the piston and the push rod is complicated, which affects the durability
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[0044] The present invention is described in detail below in conjunction with accompanying drawing:
[0045] combine Figure 1 to Figure 3 , a commercial vehicle clutch control cylinder, including a cylinder body 1, a front end cover assembly, a piston 2, a push rod 3, an exhaust pilot control valve group and an intake pilot control valve 4, the front end of the cylinder body 1 is an open structure, and the rear There is an oil inlet and outlet at the end, and the inside of the cylinder body 1 is a piston chamber, a transition chamber and a hydraulic chamber 13 from front to back, and the front end cover assembly is arranged at the front end of the cylinder body 1.
[0046] The push rod 3 is a straight rod with a circular equal cross-section, and both ends of the push rod are of round head structure. The front end cover assembly includes a front end cover 7, a dust cover 71 and a sealing sheet 72. The front end cover 7 is an annular shell structure, and its outer edge is deta...
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The invention discloses a commercial vehicle clutch control cylinder comprising a cylinder body, a front-end cover assembly, a piston, a push rod, an exhaust pilot control valve set and an air inlet pilot control valve. A piston cavity, a transition cavity and a hydraulic cavity are sequentially formed in the cylinder body from front to back, and an oil inlet and outlet is formed in the rear end of the cylinder body. The piston is arranged in the piston cavity, the center of the piston protrudes backwards to form an extending part, a front-back through exhaust channel is formed in the extending part, the rear end of the push rod is connected with the piston, and the front end of the push rod extends out of the cylinder body. The exhaust pilot control valve set is located on the rear side of the piston and comprises a hydraulic rod and an exhaust pilot control valve, the front end of the hydraulic rod is connected to the outer side of the extending part in a sleeving mode, and the exhaust pilot control valve is arranged in the hydraulic rod and is used for controlling connection and disconnection of the exhaust channel. The cylinder body is provided with an air inlet channel, and the air inlet pilot control valve controls connection and disconnection of the air inlet channel. According to the commercial vehicle clutch control cylinder, the integrated design of an oil cylinder and an air cylinder is adopted, the leakage risk is reduced, the number of small parts is reduced, the assembly time is shortened, the dust entry risk is reduced, and the product durability is improved.
Description
technical field [0001] The invention relates to the technical field of automobile braking control, in particular to a commercial vehicle clutch control cylinder, which is used for controlling the automobile clutch. Background technique [0002] The braking system of the car mostly uses a pneumatic valve group to achieve braking, and the pneumatic valve group is installed on the chassis of the car. There are also a few clutch booster cylinders in the brake system of automobiles. At present, the existing clutch booster cylinders mostly adopt a split (oil cylinder and cylinder) design, which requires additional sealing and increases the risk of oil and gas leakage; the oil cylinder and the cylinder require additional bolts. Once the bolts are loose, it will lead to failure; at the same time, the relatively complex pilot control structure has a high risk of oil and gas leakage, dust in the air enters, many small parts, and complicated assembly; the clutch booster cylinder uses a...
Claims
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IPC IPC(8): F16D48/04F16D66/02F15B15/14
CPCF16D48/04F16D66/025F15B15/14F15B15/1447F15B15/1457F15B15/1461F15B15/149F15B15/1438
Inventor 王涛张烨李秋爽
Owner ZF COMMERCIAL VEHICLE SYSTEMS (QINGDAO) CO LTD