The invention discloses a crane counterweight synchronizing hydraulic system. In the crane counterweight synchronizing hydraulic system, a first working oil opening of a main valve is connected to a flow collecting oil opening of a flow distributing and collecting valve; a first free oil inlet and a second free oil inlet of a first bidirectional hydraulic lock are connected to a first flow distributing oil opening of the flow distributing and collecting valve and a second working oil opening of the main valve respectively; a first free oil outlet and a second free oil outlet of the first bidirectional hydraulic lock are connected to a rodless cavity and a rod cavity of a first counterweight pushing oil cylinder respectively; a first free oil inlet and a second free oil inlet of a second bidirectional hydraulic lock are connected to a second flow distributing oil opening of the flow distributing and collecting valve and the second working oil opening of the main valve respectively; a first free oil outlet and a second free oil outlet of the second bidirectional hydraulic lock are connected to a rodless cavity and a rod cavity of a second counterweight pushing oil cylinder respectively. The crane counterweight synchronizing hydraulic system can achieve a good counterweight synchronizing effect without regulation, and can avoid counterweight stalling, frequent opening and closing of the bidirectional hydraulic locks, counterweight shaking, oil cylinder screaming and other phenomena.


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    Title :

    Crane counterweight synchronizing hydraulic system and crane


    Contributors:
    CHENG DUWANG (author) / ZOU YANHU (author) / ZHENG HAI (author)

    Publication date :

    2015-04-29


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B66C Krane , CRANES



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