The invention provides a single-cylinder bolt hydraulic control system, a telescopic arm and a crane. The single-cylinder bolt hydraulic control system comprises a telescopic oil cylinder; the first end of the core pipe is arranged in an inner cavity of a piston rod of the telescopic oil cylinder, the second end of the core pipe is connected with the bottom of a cylinder barrel of the telescopic oil cylinder, and the core pipe is communicated with the inner cavity. The first control oil way is connected with the inner cavity, and an electric proportional overflow valve is arranged on the first control oil way; the second control oil way is connected with the core pipe, the second control oil way is selectively connected with the cylinder pin oil cylinder or the arm pin oil cylinder, and a pressure sensor is arranged on the second control oil way; the controller adjusts the input current of the electric proportional overflow valve according to the real-time pressure data in the core tube detected by the pressure sensor, so that the pressure in the core tube is constant; the first control oil way, the core pipe and the second control oil way form an oil supply way and an oil return way of the cylinder pin oil cylinder and the arm pin oil cylinder. According to the technical scheme, the pressure in the core tube is constant, and the stability and safety of the system are enhanced.

    本发明提供一种单缸插销液压控制系统、伸缩臂及起重机。上述的单缸插销液压控制系统,包括:伸缩油缸;芯管的第一端设置在伸缩油缸的活塞杆的内腔内,芯管的第二端与伸缩油缸的缸筒的底部连接,芯管与内腔连通;第一控制油路与内腔连接,第一控制油路上设置有电比例溢流阀;第二控制油路与芯管连接,第二控制油路选择性地与缸销油缸或臂销油缸连接,第二控制油路上设置有压力传感器;控制器根据压力传感器检测的芯管内的实时压力数据调节电比例溢流阀的输入电流,以使芯管内的压力恒定;第一控制油路、芯管和第二控制油路组成缸销油缸和臂销油缸的供油油路和回油油路。上述的技术方案实现了芯管内压力恒定,增强了系统的稳定性和安全性。


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    Title :

    Single-cylinder bolt hydraulic control system, telescopic arm and crane


    Additional title:

    单缸插销液压控制系统、伸缩臂及起重机


    Contributors:
    YANG YAOXIANG (author) / LU XIAOBING (author) / YAO XINLIANG (author)

    Publication date :

    2022-05-03


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B66C Krane , CRANES / F15B SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL , Druckmittelbetriebene Systeme allgemein



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