The invention relates to a dual-pump confluent energy-saving type forklift hydraulic system. The dual-pump confluent energy-saving type forklift hydraulic system comprises an oil tank, a first oil pump, a second oil pump, a multiway valve, tilting oil cylinders, lifting oil cylinders and a steering oil cylinder. The multiway valve is composed of an oil inlet valve plate, a lifting reversing valve plate, a tilting reversing valve plate, a fitting reversing valve plate and an oil return valve plate. The multiway valve is internally provided with an annular oil return passage and a center oil passage, wherein the center oil passage is communicated with the lifting reversing valve plate, the tilting reversing valve plate, the fitting reversing valve plate and the oil return valve plate. The oil inlet valve plate is composed of a priority valve and a steering safety valve. The lifting reversing valve plate is composed of a one-way valve, a lifting reversing valve, a hydraulic control one-way valve and a main safety valve. The tilting reversing valve plate comprises a tilting reversing valve and a tilting one-way valve. The fitting reversing valve plate comprises a fitting reversing valve and a fitting one-way valve. The lifting reversing valve adopts a three-position eight-way reversing valve, dual-pump oil supplying only during lifting is achieved, and the large flow demand is met; portal-frame tilting and fitting acting which need smaller flow can be achieved through one-pump oil supplying, the pressure loss of the system is low, and the energy loss is low.


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    Titel :

    Dual-pump confluent energy-saving type forklift hydraulic system


    Beteiligte:
    WEN YUEQING (Autor:in) / MA QINGFENG (Autor:in) / YUAN ZHENG (Autor:in) / ZHAO XIAODONG (Autor:in) / CHEN ZENG (Autor:in) / YU JIANFU (Autor:in) / CHEN XIUYUN (Autor:in)

    Erscheinungsdatum :

    2015-11-25


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Englisch


    Klassifikation :

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



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