The invention provides a mobile crawler crane mast jacking hydraulic driving system and a control method thereof. The system comprises a variable-amplitude winch and a mast jacking oil cylinder, the variable amplitude winch is additionally provided with a high-low tension switching structure; the high and low tension switching structure is used for switching a high tension mode and a low tension mode of the variable amplitude winch; when the variable-amplitude winch is in a working mode, the high-low tension switching structure enables the variable-amplitude winch to be kept in a high-tension mode; when the variable-amplitude winch is in the disassembly and assembly mode, after the arm frame is lowered and supported, the variable-amplitude winch is switched into the low-tension mode through the high-tension and low-tension switching structure. In the rising or falling process of the mast, the mast jacking oil cylinder design parameters and the variable amplitude winch system interaction control logic are reasonably set, so that in the operation process of the mast system, the operation process is relatively simple regardless of manual control or automatic control, and an operator does not need to observe the pressure of the system to adjust the operation process so as to avoid overload of the system.

    本发明提供一种移动式履带起重机桅杆顶升液压驱动系统及其控制方法。系统包括变幅卷扬和桅杆顶升油缸;所述变幅卷扬增设有高低拉力切换结构;所述高低拉力切换结构用于切换变幅卷扬的高拉力模式和低拉力模式;当变幅卷扬处于工作模式下,所述高低拉力切换结构使变幅卷扬保持在高拉力模式;当变幅卷扬处于拆装模式下,臂架下放支撑完成后,所述高低拉力切换结构使变幅卷扬切换为低拉力模式。本发明桅杆升起或落回过程中,通过合理设定桅杆顶升油缸设计参数和变幅卷扬系统交互控制逻辑,使桅杆系统在操作过程中,无论手动控制或自动控制,操作过程相对简单,无需操作者观察系统压力来调整操作过程以避免系统超载。


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    Title :

    Mast jacking hydraulic driving system of mobile crawler crane and control method of mast jacking hydraulic driving system


    Additional title:

    一种移动式履带起重机桅杆顶升液压驱动系统及其控制方法


    Contributors:
    YAO XIANGBIN (author) / CHEN HAIJUN (author) / MA BANGGUO (author)

    Publication date :

    2023-04-18


    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 / B66C Krane , CRANES / B66D Haspeln , CAPSTANS



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