The invention belongs to the field of agricultural machinery, and discloses a tractor hydraulic system and a tractor, and the tractor hydraulic system comprises a service braking hydraulic loop which comprises a braking valve used for controlling a brake; the chassis control hydraulic loop comprises a chassis control valve group; and the priority valve group is used for pumping the hydraulic oil passing through the priority valve group to the brake valve when the real-time brake pressure of the service brake hydraulic circuit is not higher than a set upper threshold value, and switching and pumping the hydraulic oil to the chassis control valve group or returning the hydraulic oil when the real-time brake pressure is not lower than a set lower threshold value. According to the tractor chassis control system, through interconnection of the priority valve set and the chassis control valve set, interconnection of a tractor chassis brake system, a clutch control system and a lubricating system is achieved, the system is more compact, and energy consumption is lower; after the system preferentially ensures that the system has the service braking capacity, parking braking is activated, and the driving process is safer and more reliable. And besides, the system is compact, the pipeline arrangement of the whole vehicle system is simplified, and the energy loss of the system is reduced.

    本申请属于农用机械领域,公开了一种拖拉机液压系统和拖拉机,拖拉机液压系统包括行车制动液压回路,包括用于控制制动器的制动阀;底盘控制液压回路,包括底盘控制阀组;优先阀组,用于在行车制动液压回路的实时制动压力不高于设定上阈值时,使得通过优先阀组的液压油泵送至制动阀,且在实时制动压力不低于设定下阈值时,使得液压油切换泵送至底盘控制阀组或者回油。在本申请中,通过优先阀组和底盘控制阀组的互联,实现拖拉机底盘制动系统、离合控制系统及润滑系统的互联,系统更紧凑,能耗更低;系统优先保证具有行车制动能力后,采激活驻车制动,驾驶过程中更安全可靠。而且,系统紧凑之余,还简化了整车系统管路布置,降低系统能量损失。


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    Title :

    Tractor hydraulic system and tractor


    Additional title:

    拖拉机液压系统和拖拉机


    Contributors:
    HAN ZUOPENG (author) / LIU XIUZHI (author) / LI LEILEI (author) / CHEN HAO (author) / ZHANG JIAN (author)

    Publication date :

    2025-03-25


    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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