The invention discloses an energy-saving hydraulic system which is used for an overhead working truck. The energy-saving hydraulic system comprises a power unit, an execution unit, a main hydraulic system, a sensing unit and a control unit. The power unit comprises a hydraulic pump and a motor. The execution unit comprises a hydraulic lifting control system used for controlling a cantilever craneto stretch out and draw back so as to adjust a working platform to ascend and descend and a hydraulic rotating control system used for controlling a rotating table to rotate. The main hydraulic systemcomprises a stop valve, an electric proportional overflow valve and reversing valves connected with all the hydraulic systems of the execution unit. The sensing unit comprises a long angle sensor used for measuring the position of the working platform and a weighing sensor used for measuring the load capacity of the working platform. The control unit is used for controlling the power unit and themain hydraulic system to work. According to the energy-saving hydraulic system, through cooperation of all the elements, the rotating speed of the motor and the overflow pressure value can be controlled according to the working requirements of the overhead working truck so as to control energy consumption of the whole equipment and loss of hydraulic energy, and the energy-saving effect is improved.

    本发明公开了一种节能液压系统,用于高空作业车,包括动力单元、执行单元、主液压系统、传感单元和控制单元,动力单元包括液压泵和电机,执行单元包括用于控制臂架伸缩以调节作业平台升降的液压升降控制系统和用于控制转台旋转的液压旋转控制系统,主液压系统包括截止阀、电比例溢流阀和连接执行单元各液压系统的换向阀,传感单元包括用于测量作业平台的位置的长角度传感器和用于测量作业平台载重量的称重传感器,控制单元用于控制动力单元和主液压系统工作。本发明通过各元件的配合,可根据高空作业车工作需要,控制电机转速和溢流压力值以达到控制整个设备能量的消耗和液压能量的损耗,提高节能效果。


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    Titel :

    Energy-saving hydraulic system


    Weitere Titelangaben:

    一种节能液压系统


    Beteiligte:
    XIANG WEI (Autor:in) / SONG ZHANGCE (Autor:in) / ZHANG CHANGFU (Autor:in) / YANG ZENGZENG (Autor:in)

    Erscheinungsdatum :

    2020-11-17


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    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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