The invention discloses a combined type automobile hydraulic power-assisted steering protection system which comprises an oil tank, a booster pump, a steering valve and a steering power cylinder, wherein the oil tank is communicated with the booster pump, the output end of the booster pump is communicated with the steering valve through an oil inlet pipe, the steering valve is further communicated with the oil tank through an oil return pipe, the oil inlet pipe is communicated with the oil return pipe through a pressure relief pipe, and an overflow valve is arranged on the pressure relief pipe; the oil inlet pipe is further communicated with the oil tank through a standby pipe, and a one-way valve is arranged on the standby pipe and communicated in the direction towards the oil inlet pipe. According to the combined type automobile hydraulic power-assisted steering protection system adopting the structure, the overflow valve is arranged, and the system is used for protecting a power-assisted steering hydraulic system from being damaged in the using process of an automobile under the conditions that steering wheels are in a limit state, a steering wheel keeps applying force in the same direction and an engine keeps running at a high speed; and meanwhile, when application scenes such as damage of a hydraulic pump or blockage of an oil inlet pipeline occur in the power-assisted steering hydraulic system, the dead stagnation condition during steering of driving wheels is eliminated by utilizing the one-way valve.

    本发明公开了一种复合式汽车液压转向助力保护系统,包括油箱、助力泵、转向阀和转向动力缸,油箱与助力泵连通,助力泵的输出端经进油管与转向阀连通,转向阀还经回油管与油箱连通,进油管和回油管之间经泄压管连通,泄压管上设置有溢流阀;进油管还经备用管与油箱连通,备用管上设置有单向阀,单向阀朝向进油管的方向导通。本发明采用上述结构的复合式汽车液压转向助力保护系统,通过设置溢流阀,用于解决汽车在使用过程中,在转向车轮处于极限状态且方向盘保持同向施力,发动机保持高速运转状况下,保护转向助力液压系统不被损坏;同时在转向助力液压系统出现液压泵损坏或进油管路堵塞等应用场景时,利用单向阀消除驱动车轮转向时的死滞状况。


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    Titel :

    Combined type automobile hydraulic power-assisted steering protection system


    Weitere Titelangaben:

    一种复合式汽车液压转向助力保护系统


    Beteiligte:
    GUO XIANLIN (Autor:in) / WANG ZHENG (Autor:in) / YU SHIBO (Autor:in) / WANG YANSHAN (Autor:in)

    Erscheinungsdatum :

    2021-05-14


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    IPC:    B62D MOTOR VEHICLES , Motorfahrzeuge



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