A valve block of the electromagnetic reversing valve is provided with a cavity, oil ports A, B and P are formed in the side wall of the valve block, a normally-open type two-way stop valve is arranged in the cavity of the valve block and connected with the oil port A through a pipeline, and an electromagnet DT1 is installed on the pipeline. The normally-closed two-way stop valve is arranged in the cavity of the valve block and connected with the oil port B through a pipeline, an electromagnet DT2 is installed on the pipeline, and the emergency pump is communicated with the oil port P in the valve block; the main pump is connected with the lifting device and the pulling/dragging device and provides hydraulic oil for the lifting device and the pulling/dragging device; the lifting device is communicated with the oil port A on the valve block through a pipeline, a proportional multi-way valve is arranged on the pipeline, the supporting and pulling/dragging device is connected with the oil port B on the valve block through a pipeline, and a proportional valve is arranged on the pipeline. According to the invention, interlocking of hoisting operation or supporting traction/dragging operation on the rescue carriage is controlled through the two-way electromagnetic valve, so that potential safety hazards caused by misoperation can be avoided, and the safety of the working state of the rescue carriage is effectively ensured.

    本发明涉及一种抢救车双路电磁换向阀,电磁换向阀的阀块具有空腔,阀块的侧壁上设有油口A、B、P,常开式双向截止阀设在阀块的腔体内通过管路与油口A相连,在其管路上安装有电磁铁DT1,常闭式双向截止阀设在阀块的腔体内通过管路与油口B相连,在其管路上安装有电磁铁DT2,所述应急泵与阀块上的油口P连通;主泵与起重装置、托牵/拖拽装置连接,为它们提供液压油;起重装置通过管路与阀块上的油口A连通,在其管路上设有比例多路阀,所述托牵/拖拽装置通过管路与阀块上的油口B连接,在其管路上设有比例阀。本发明通过双向电磁阀控制抢救车上的起重作业或托牵/拖拽作业的互锁,可避免因误操作带来的安全隐患,有效保证抢救车工作状态的安全。


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    Title :

    Rescue vehicle two-way electromagnetic directional valve


    Additional title:

    抢救车双路电磁换向阀


    Contributors:
    CHENG XIAOMING (author) / CAI WEIFENG (author) / DING LI (author) / DU ZHIQIANG (author) / HU XIAOGONG (author) / SONG ZUOHENG (author) / ZHANG HUI (author) / LU JIANFENG (author)

    Publication date :

    2022-05-06


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    F15B SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL , Druckmittelbetriebene Systeme allgemein / B66C Krane , CRANES



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