The invention discloses a parallel hydraulic steering system of an unmanned tractor, which relates to the field of hydraulic steering systems and comprises a hydraulic steering module, a middle-position hydraulic module, a manual left steering hydraulic module, an unmanned left steering hydraulic module, an overload protection module and a system fault analysis module. And a middle-position hydraulic module, a manual left steering hydraulic module and an unmanned left steering hydraulic module are arranged in the hydraulic steering module. According to the parallel hydraulic steering system of the unmanned tractor, when the tractor normally runs in a straight line, a steering gear and a steering control valve set do not work, due to the fact that the ground is uneven and a steering oil cylinder is impacted by pressure, a first overload overflow valve and a first oil supplementing one-way valve are arranged for protecting the oil cylinder; the oil cylinder B port reaches the overload overflow valve to the T port and returns to the oil tank; meanwhile, the T-port oil return box reaches the first oil supplementing one-way valve to the left cavity of the A port of the steering oil cylinder, and the oil cylinder is prevented from being impacted and the left cavity is prevented from sucking air.

    本发明公开了一种无人驾驶拖拉机并联液压转向系统,涉及液压转向系统领域,包括系统包括液压转向模块、中位液压模块、人力左转向液压模块、无人左转向液压模块、过载保护模块和系统故障分析模块,所述液压转向模块的内部设置有中位液压模块、人力左转向液压模块以及无人左转向液压模块。该无人驾驶拖拉机并联液压转向系统,当拖拉机正常直线行驶时,转向器及转向控制阀组不工作,由于地面的凹凸不平,转向油缸受到压力冲击,为了保护油缸设置第一过载溢流阀及第一补油单向阀,当转向油缸活塞杆受到冲击右移时,则油缸B口到过载溢流阀到T口回油箱;同时T口回油箱到第一补油单向阀到转向油缸A口左腔,避免油缸受到冲击及左腔吸空。


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    Title :

    Parallel hydraulic steering system of unmanned tractor


    Additional title:

    一种无人驾驶拖拉机并联液压转向系统


    Contributors:
    DUAN DEQIANG (author) / LU FENGXIANG (author) / ZHAO LI (author) / WANG WENGONG (author) / WANG JINLONG (author)

    Publication date :

    2024-12-10


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B62D MOTOR VEHICLES , Motorfahrzeuge



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