The present invention relates to a hydraulic valve device for an automatic steering system of an agricultural machine. More specifically, the hydraulic valve device can simply switch to a manual steering mode and an automatic steering mode, and, when power is applied to a first switching valve (50), a second switching valve (60) and an automatic steering control unit (30) to switch to the automatic steering mode, the first switching valve (50) opens a steering line (13), the second switching valve (60) opens a pilot signal line (42) such that pilot signal pressure is supplied to the automatic steering control unit (30), and pilot valves (33A, 33C) of the automatic steering control unit (30) open a CAN flow path to supply the pilot signal pressure to a left water pressure unit (22) of an automatic steering valve (20), thereby switching the automatic steering valve (20) to the right side, and, in the same state, supplying a hydraulic fluid of the steering pump to a steering actuator via the automatic steering valve (20) and the steering line (13) such that automatic steering (direction switching to the right side) can be performed.

    본 발명은 농기계의 자동 조향 장치용 유압밸브장치에 관한 것으로, 특히 수동 조향모드와 자동 조향모드로 간단하게 변경할 수 있고, 자동 조향모드로 전환하기 위하여 제1전환밸브(50), 제2전환밸브(60) 및 자동 조향 제어부(30)에 전원을 인가하면, 제1전환밸브(50)는 조향 라인(13)을 개방하고, 제2전환밸브(60)는 파이롯신호라인(42)을 개방하여 파이롯신호압력이 자동 조향 제어부(30)에 공급되고, 그리고 자동 조향 제어부(30)의 파이롯밸브(33A,33C)는 CAN유로를 개방하여, 파이롯신호압력을 자동 조향밸브(20)의 좌측 수압부(22)로 공급함으로써 자동 조향밸브(20)를 우측으로 절환시키고, 이 상태에서 조향 펌프의 압유는 자동 조향밸브(20)와 조향 라인(13)을 거쳐 조향 액츄에이터로 공급되어 자동으로 조향(우측으로 방향전환)할 수 있게 된다.


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    Title :

    HYDRAULIC VALVE DEVICE FOR AUTO STEERING DEVICE OF AGRICULTURAL TRACTOR


    Additional title:

    농기계의 자동 조향 장치용 유압밸브장치


    Contributors:

    Publication date :

    2023-06-02


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Korean


    Classification :

    IPC:    F15B SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL , Druckmittelbetriebene Systeme allgemein / B62D MOTOR VEHICLES , Motorfahrzeuge




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