The embodiment of the invention provides a hydraulic control method and device of a single-cylinder bolt type telescopic arm and engineering machinery. The method comprises the steps that the working state of the single-cylinder bolt type telescopic arm is determined; acquiring a first pressure of the central channel based on a pressure sensor; under the condition that the first pressure is not within the pressure threshold range corresponding to the working state, the working speed of the telescopic oil cylinder is obtained; under the condition that the working speed is smaller than or equal to the speed threshold value corresponding to the working state, preset parameters corresponding to the working state are calculated through the working speed; and the current of the main valve is repeatedly adjusted, and the real-time flow of the main valve is calculated according to the adjusted current after each adjustment until the preset parameters meet the preset conditions corresponding to the working state based on the real-time flow of the main valve. In the process, the first pressure of the center channel is obtained, the speed or the current of the single-cylinder bolt type telescopic arm is adjusted so that the first pressure of the center channel can be within the pressure threshold value range, and the reliability and the safety of operation are guaranteed.

    本发明实施例提供一种单缸插销式伸缩臂的液压控制方法、控制装置及工程机械。该方法包括:确定单缸插销式伸缩臂的工作状态;基于压力传感器获取中心通道的第一压力;在第一压力不在工作状态对应的压力阈值范围内的情况下,获取伸缩油缸的工作速度;在工作速度小于或等于工作状态对应的速度阈值的情况下,利用工作速度计算工作状态对应的预设参数;重复调整主阀的电流,并在每次调整后根据调整后的电流计算主阀的实时流量,直至基于主阀的实时流量使得预设参数满足工作状态对应的预设条件。该过程通过获取中心通道的第一压力,调整单缸插销式伸缩臂的速度或电流以使中心通道的第一压力处于压力阈值范围内,保障了作业的可靠性和安全性。


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    Title :

    Hydraulic control method and control device of single-cylinder bolt type telescopic arm and engineering machinery


    Additional title:

    单缸插销式伸缩臂的液压控制方法、控制装置及工程机械


    Contributors:
    LI YING (author) / LI HUAIFU (author) / HU TINGJIANG (author) / PENG MUYUAN (author) / ZHOU LU (author) / JIANG DONGDONG (author) / LUO XIANZHI (author) / SHEN CHANGWU (author)

    Publication date :

    2023-06-23


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B66C Krane , CRANES



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