The invention provides a steering gear, a steering system and a working machine. The diverter includes a control valve and an end plate that closes an open side of the control valve. The end plate is provided with a working port suitable for being connected with a working loop, a supply port suitable for being connected with a pressurized fluid source, a pair of steering ports suitable for being connected with a steering actuator and a backflow port suitable for being connected with a fluid container. A priority valve is arranged in the end plate, and the priority valve is used for preferentially distributing fluid from the supply port to the control valve and distributing residual flow to the working loop through the working port. The control valve is used for selectively supplying the fluid preferentially distributed by the priority valve to one of the pair of steering ports. The structure of the steering gear is improved, and the priority valve is integrated in the end plate of the steering gear, so that the steering reaction sensitivity is improved, the shaking phenomenon in the steering process is avoided, the pressure loss caused by an additional connecting device is reduced, the assembly time of a steering system is shortened, and the assembly efficiency is improved. And the overall cost of the steering system is reduced.

    提供一种转向器、转向系统和作业机械。该转向器包括控制阀和端板,端板封闭控制阀的开口侧。端板上设置有适于连接作业回路的工作口、适于连接加压流体源的供给口、适于连接转向执行器的一对转向口以及适于连接流体容器的回流口。端板内设置有优先阀,优先阀用于将来自供给口的流体优先地分配至控制阀,并将剩余流量经工作口分配至作业回路。控制阀用于选择性地将优先阀优先分配的流体供给至一对转向口中的一者。本公开对转向器的构造进行了改进,在转向器的端板中集成了优先阀,因此提高了转向反应的灵敏度,避免了转向过程中抖动现象的发生,降低了因额外的连接装置而产生的压力损失,减少了转向系统的装配时间,及降低了转向系统的整体成本。


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    Title :

    Steering gear, steering system and working machine


    Additional title:

    转向器、转向系统和作业机械


    Contributors:
    LI FUGANG (author) / YAO QUNXING (author) / QIU LONGTAO (author)

    Publication date :

    2024-06-28


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B62D MOTOR VEHICLES , Motorfahrzeuge



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