The invention discloses a lifting protection system and method for a lifting platform, and the system comprises a driving mechanism, a hydraulic pump, an oil tank, a hydraulic oil cylinder, a direction control valve, an overflow valve and a control host. The driving mechanism is used for driving the hydraulic pump; the hydraulic pump is used for transporting hydraulic oil between the oil tank and the hydraulic oil cylinder; the oil tank is used for storing hydraulic oil; the hydraulic oil cylinder is used for conveying and receiving hydraulic oil and controlling lifting of the lifting platform. The direction control valve is used for controlling the flowing direction of hydraulic oil between the oil tank and the hydraulic oil cylinder; the overflow valve is opened when the pressure in the hydraulic oil cylinder reaches the preset pressure, so that hydraulic oil in the hydraulic oil cylinder flows into the oil tank; the control host is used for controlling the driving mechanism, the direction control valve and the overflow valve. According to the embodiment of the invention, the pressure in the hydraulic oil cylinder is controlled through the overflow valve, so that the lifting height of the lifting platform is controlled, and the problem that the lifting platform cannot be stopped due to faults in the lifting process is effectively solved.

    本发明公开了一种升降平台上升保护系统及方法,其中,系统包括:驱动机构、液压泵、油箱、液压油缸、方向控制阀、溢流阀和控制主机;驱动机构用于驱动液压泵;液压泵用于将液压油在油箱和液压油缸之间运输;油箱用于存放液压油;液压油缸用于输送和接收液压油,并控制升降平台的升降;方向控制阀用于控制液压油在油箱和液压油缸之间的流动方向;溢流阀用于在液压油缸内压力达到预设压力时打开,使液压油缸内的液压油流入至油箱内;控制主机用于控制驱动机构、方向控制阀和溢流阀。本发明实施例通过溢流阀控制液压油缸内的压力,进而控制了升降平台的上升高度,有效地解决了升降平台在上升过程中因故障而无法停止的问题。


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    Title :

    Lifting protection system and method for lifting platform


    Additional title:

    一种升降平台上升保护系统及方法


    Contributors:
    WANG WEI (author) / ZHANG GUOFENG (author) / YANG XIANGFEI (author)

    Publication date :

    2025-05-13


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    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



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