The invention discloses a hoisting machinery braking method which is used for detecting the braking effect in the working process and can prevent hook gliding from happening to hoisting machinery. The method includes the following steps that the change amount of a rotating shaft of a motor is obtained after braking is started; whether the change amount is larger than a preset change amount threshold value or not is judged one or more times; if the change amount is larger than the preset change amount threshold value, the motor is controlled to output the torque for making a load instantly suspended, and the current change amount of the rotating shaft of the motor is obtained again; braking is finished if the change amount is not larger than the preset change amount threshold value; when the preset number of braking times is achieved, if the change amount is larger than the preset change amount threshold value, the motor is controlled to output the torque for making the load suspended, and braking is finished if the change amount is not larger than the preset change amount threshold value; and after the braking time is larger than the preset time threshold value and the change amount is smaller than the change amount threshold value, braking is finished. By means of the process of the multiple times of judgment, the problem that braking signals and braking actions are not synchronous due to mechanical matching or electrical faults can be solved, and misjudgment is not prone to happening.


    Access

    Download


    Export, share and cite



    Title :

    Hoisting machinery braking method and hoisting machinery braking device


    Contributors:
    LIU XIAOMING (author) / WANG JINYONG (author)

    Publication date :

    2015-12-09


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B66D Haspeln , CAPSTANS



    Hoisting machinery

    White, J.M. | Engineering Index Backfile | 1945


    Hoisting machinery

    MA SHANHUA / ZHANG YANLEI / LI LONG | European Patent Office | 2016

    Free access

    Control method and device for hoisting machinery, controller and hoisting machinery

    WANG QIANGZHOU / HUANG GUOYONG / JIANG CHAO et al. | European Patent Office | 2021

    Free access

    Hoisting machinery operation control method and system and hoisting machinery

    KANG XIAOWEI | European Patent Office | 2023

    Free access

    Active steering system for hoisting machinery and hoisting machinery

    DING HONGGANG / CHEN JIANKAI / LI LI et al. | European Patent Office | 2023

    Free access