Vehicle air brake check valve and vehicle air brake system

Abstract

The invention relates to a vehicle air brake check valve and a vehicle air brake system. The vehicle air brake check valve comprises a valve element, a valve body, a spring and a valve cover arranged on the valve body in a sleeving manner, wherein the valve element is arranged in an inner hole of the valve body; the spring is arranged between the valve cover and the valve element; and at least two lugs which are in slide contact with the inner wall surface of the inner hole are partially arranged on the end surface of the valve element. The at least two lugs which are in slide contact with the inner wall surface of the inner hole are partially arranged on the end surface of the valve element, and slide relative to the inner wall surface of the inner hole, thus guide is provided for axial movement of the valve element in the inner hole, and separation of the valve element from the inner hole during a long-term use process is avoided; therefore, the reliability of the reverse closure is improved.

Description

technical field [0001] The invention relates to the field of vehicle engineering, in particular to a vehicle air brake check valve and a vehicle air brake system. Background technique [0002] With the rapid development of the automobile industry, automobile users have higher and higher requirements for automobile safety performance. The air pressure regulation protection device of automobile and trailer has become an indispensable part of automobile. The rationality of the design of this part will directly affect the Safety and reliability when braking cars and trailers. In traditional technology, the air brake pipelines of automobiles and trailers are only arranged with connecting devices along the direction of the air path. With the continuous development of automobile technology, the control of the flow direction of the internal air path of automobiles and trailers is more stringent. [0003] In the prior art, a one-way valve is used to adjust and control the flow of ga...

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Problems solved by technology

[0003] In the prior art, a one-way valve is used to adjust and control the flow of gas in the air circuit, but due to the long-term use of the internal air circuit of the automobile, the valve core in the vehicle air brake check valve will break away from the valve hole, so that the valve core The valve hole cannot be blocked when the flow is reversed, and the reliability of the reverse flow cannot be guaranteed, which affects the reliability and stability of the control of the flow direction of the gas circuit inside the car.

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