The invention relates to the field of hydraulic braking, and discloses a parking braking system and agricultural machine.The parking braking system comprises a parking brake, a first reversing valve, a second reversing valve and an energy accumulator, a working oil port of the first reversing valve is connected with a rod cavity of a brake cylinder of the parking brake, and an oil inlet of the first reversing valve is connected with an oil inlet path; an oil return port of the first reversing valve is connected with an oil return path, in a power-off state, a working oil port of the first reversing valve is communicated with the oil return port, an oil outlet of the second reversing valve is connected with the oil return path, in the power-off state, an oil inlet of the second reversing valve is communicated with the oil outlet, and the energy accumulator is connected with the oil inlet of the second reversing valve. By means of the parking braking system, the situation that tires are locked when the agricultural machine loses power accidentally in the running process can be avoided, and meanwhile the agricultural machine can be slowly and stably decelerated until the agricultural machine stops for parking.

    本发明涉及液压制动领域,公开了一种驻车制动系统和农业机械,驻车制动系统包括驻车制动器、第一换向阀、第二换向阀以及蓄能器,第一换向阀的工作油口与驻车制动器的制动缸的有杆腔连接,第一换向阀的进油口连接有进油油路,第一换向阀的回油口连接有回油油路,处于失电状态下,第一换向阀的工作油口与回油口连通,第二换向阀的出油口与回油油路连接,处于失电状态下,第二换向阀的进油口和出油口连通,蓄能器与第二换向阀的进油口连接。本发明的驻车制动系统能够避免农业机械在行驶过程中意外失电时轮胎抱死的同时能够使农业机械较为缓慢平稳地减速直至停下驻车。


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    Title :

    Parking braking system, working method thereof and agricultural machine


    Additional title:

    驻车制动系统及其工作方法和农业机械


    Contributors:
    CHEN XUELIANG (author) / HAO PENGYONG (author) / LI PEILIN (author)

    Publication date :

    2024-11-26


    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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