The invention provides a forklift energy recovery system. The forklift energy recovery system comprises a hydraulic driving module, a hydraulic control module and an energy recovery module. The hydraulic driving module comprises a lifting oil cylinder group, a hydraulic power unit and a three-position six-way electromagnetic directional valve, and the hydraulic power unit is communicated with the lifting oil cylinder group through the three-position six-way electromagnetic directional valve; the energy recovery module comprises a recovery oil cylinder group, a two-position two-way electromagnetic directional valve and a two-position three-way electromagnetic directional valve; an inlet of the recovery oil cylinder group is communicated with an inlet of the three-position six-way electromagnetic directional valve through the two-position three-way electromagnetic directional valve; an inlet of the recovery oil cylinder group is communicated with the hydraulic power unit through a two-position two-way electromagnetic directional valve; the hydraulic control module is used for recovering energy in the load descending process by selectively controlling connection of the three-position six-way electromagnetic reversing valve, the two-position two-way electromagnetic reversing valve and the two-position three-way electromagnetic reversing valve. The energy utilization rate of the forklift can be effectively increased, and the service life of hydraulic system parts can be effectively prolonged.

    本发明提供了一种叉车能量回收系统,包括液压驱动模块、液压控制模块和能量回收模块;所述液压驱动模块包括举升油缸组、液压动力单元和三位六通电磁换向阀,所述液压动力单元通过三位六通电磁换向阀与举升油缸组连通;所述能量回收模块包括回收油缸组、二位二通电磁换向阀、二位三通电磁换向阀;所述回收油缸组进口通过二位三通电磁换向阀与三位六通电磁换向阀的进口连通;所述回收油缸组进口通过二位二通电磁换向阀与液压动力单元连通;所述液压控制模块通过选择性的控制三位六通电磁换向阀、二位二通电磁换向阀和二位三通电磁换向阀的接合,用于回收负载下降过程的能量。本发明可有效提高叉车能量利用率和液压系统零部件的寿命。


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    Title :

    Forklift energy recovery system


    Additional title:

    一种叉车能量回收系统


    Contributors:
    YIN BIFENG (author) / ZHOU JIADING (author) / YU YINGXIAO (author) / PEI YIXIAO (author) / GU HAO (author)

    Publication date :

    2022-06-28


    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 / B66F HOISTING, LIFTING, HAULING, OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD , Hub-, Verhol- oder Schubvorrichtungen, soweit nicht anderweitig vorgesehen, z.B. Vorrichtungen mit unmittelbarer Krafteinwirkung auf die Last



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