The invention provides a four-circuit protection valve with an overflow function. The four-circuit protection valve comprises a four-circuit protection valve air inlet, control port threads and an inner air passage, wherein the four-circuit protection-valve air inlet communicated with the interior of the four-circuit protection valve body is formed in one side of the four-circuit protection-valvebody; a first air outlet, a second air outlet, a third air outlet and a fourth air outlet are formed in the other side of the four-circuit protection valve body; a throttle valve is arranged between afirst air outlet branch and a third air outlet branch on the four-circuit protection valve body; a clamp spring is arranged at the upper part of the throttle valve; a control port is formed in one side of the four-circuit protection valve body; the control port threads are arranged in the control port; and the inner air passage communicated with the control port is arranged in the four-circuit protection valve body. Due to the fact that the throttle valve is arranged between the first air outlet branch and the third air outlet branch, if a pipeline of the first air outlet branch is damaged, due to the fact that the third air outlet is connected with a parking brake, air can be exhausted through the throttle valve, the parking brake acts, a vehicle cannot be started, and safety accidents are avoided.

    本发明提供一种增加溢流功能的四保阀,包括四保阀进气口、控制口螺纹和内通气路;所述四保阀阀体一侧设有与其内部相通的四保阀进气口,且四保阀阀体另一侧设有第一出气口、第二出气口、第三出气口和第四出气口;所述四保阀阀体上的第一出气口和第三出气口支路间设有节流阀,且节流阀上部设有卡簧;所述四保阀阀体一侧设有控制口,且控制口内部设有控制口螺纹,所述四保阀阀体内部设有与控制口相通的内通气路。通过将第一出气口和第三出气口支路间设有节流阀,如果第一出气口支路管路破损时,由于第三出气口连接驻车制动,会通过该节流阀排气,使驻车制动起作用,致使车辆无法起步,避免安全事故的发生。


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    Title :

    Four-circuit protection valve with overflow function


    Additional title:

    一种增加溢流功能的四保阀


    Contributors:
    DONG QIANG (author) / ZHAO QIANKUN (author) / GUO ZHAOLONG (author) / KE ZUNXUE (author) / LI CONG (author) / YU HONGWEI (author)

    Publication date :

    2020-04-17


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF



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