The invention discloses a hydraulic steering system for an engineering vehicle. The hydraulic steering system comprises a vehicle axle, an oil cylinder assembly and an oil supplying pipeline, wherein the oil cylinder assembly comprises two same single-rod oil cylinders which are fixed together in a back-to-back manner; a left end rod of the oil cylinder assembly is connected with a steering fixing arm; the steering fixing arm is connected to the vehicle axle; a right end rod of the oil cylinder assembly is fixedly connected with the middle of a right rotation arm of a steering pull rod; one end of the right rotation arm of the steering pull rod is connected with the vehicle axle; the other end of the right rotation arm of the steering pull rod is connected with the right end of a steering cross pull rod; the left end of the steering cross pull rod is connected with a left rotation arm of the steering pull rod; the left rotation arm of the steering pull rod is connected onto the vehicle axle; the oil cylinder assembly is connected with a high pressure loop and an oil returning loop. According to the hydraulic steering system disclosed in the invention, a centering oil cylinder having a complex structure is removed, a connection manner between a steering oil cylinder and the vehicle axle is simplified, a control logic of steering and centering is simplified, the cost is greatly reduced, and at the same time, the fastness and the reliability of the steering system are improved.


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    Title :

    Hydraulic steering system for engineering vehicle


    Contributors:
    LU GUIQIN (author) / CHENG YI (author)

    Publication date :

    2016-02-17


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B62D MOTOR VEHICLES , Motorfahrzeuge



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