The invention relates to a steering hydraulic system for engineering machinery, comprising: a conventional cab steering hydraulic subsystem, which comprises a steering pump, a dynamic priority valve, a dynamic load sensitive steering gear and a steering oil cylinder; the remote control steering hydraulic subsystem comprises a steering pump, a dynamic priority valve, a proportional electromagnetic valve, a steering valve and a steering oil cylinder; when one of the conventional cab steering hydraulic subsystem and the remote control steering hydraulic subsystem works, an LS signal fed back from the dynamic load sensitive steering gear to the dynamic priority valve and an LS signal fed back from the steering valve to the dynamic priority valve do not interfere with each other. When both the conventional cab steering hydraulic subsystem and the remote control steering hydraulic subsystem do not work, hydraulic fluid from the LS port of the dynamic priority valve can be delivered to the LS port of the dynamic load sensitive steering gear. The invention further relates to engineering machinery.

    本发明涉及一种用于工程机械的转向液压系统,包括:常规驾驶室转向液压子系统,其包括转向泵、动态优先阀、动态负载敏感转向器和转向油缸;遥控转向液压子系统,其包括转向泵、动态优先阀、比例电磁阀、转向阀和转向油缸;其中,当常规驾驶室转向液压子系统和遥控转向液压子系统中的一者工作时,从动态负载敏感转向器反馈至动态优先阀的LS信号和从转向阀反馈至动态优先阀的LS信号互不干扰,当常规驾驶室转向液压子系统和遥控转向液压子系统均不工作时,来自动态优先阀的LS口的液压流体能够被输送到动态负载敏感转向器的LS口。本发明还涉及一种工程机械。


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    Title :

    Steering hydraulic system for engineering machinery and engineering machinery


    Additional title:

    用于工程机械的转向液压系统和工程机械


    Contributors:
    GUAN PEIGANG (author) / HU CHANGYUN (author) / WANG QINGKUN (author) / WU LEI (author)

    Publication date :

    2024-12-06


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B62D MOTOR VEHICLES , Motorfahrzeuge



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