The embodiment of the invention provides a hydraulic control system for high-altitude operation equipment and the high-altitude operation equipment. According to the hydraulic control system, an electro-hydraulic proportional valve is installed at an oil inlet of the upper lifting oil cylinder. The first sensor is installed on an oil inlet of the upper lifting oil cylinder, and the second sensor is installed on an oil inlet of the lower lifting oil cylinder. The controller is configured to determine the target pressure difference between the first target pressure of the upper lifting oil cylinder and the second target pressure of the lower lifting oil cylinder at the current height, and the current value of the electro-hydraulic proportional valve is determined according to the target pressure difference. And the valve opening degree of the electro-hydraulic proportional valve is controlled according to the current value, so that the difference value between the actual pressure difference between the first pressure and the second pressure at the current height and the target pressure difference is within the preset range. Pressure of the two lifting oil cylinders can be adjusted respectively, so that deformation and internal stress of the shear fork arm are reduced, and energy consumption of the system is reduced.

    本申请实施例提供一种用于高空作业设备的液压控制系统及高空作业设备。液压控制系统包括:上举升油缸进油口处安装有电液比例阀。第一传感器安装于上举升油缸的进油口,第二传感器安装于下举升油缸的进油口。控制器被配置成:确定在当前高度下上举升油缸的第一目标压力和下举升油缸的第二目标压力之间的目标压力差,根据目标压力差确定电液比例阀的电流值;根据电流值控制电液比例阀阀门开度,使得在当前高度下第一压力与第二压力之间的实际压力差与目标压力差之间的差值处于预设范围内。可以分别调节两个举升油缸的压力,从而减小剪叉臂的变形和内应力,降低系统能耗。


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    Title :

    Hydraulic control system for high-altitude operation equipment and high-altitude operation equipment


    Additional title:

    用于高空作业设备的液压控制系统及高空作业设备


    Contributors:
    WANG YI (author) / WANG JINGWEI (author) / TAO YUAN (author) / ZHU MINSI (author) / LIU WUJI (author)

    Publication date :

    2023-03-03


    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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