The invention discloses an elevator safety protection system which is characterized in that a controller firstly controls an activity limit switch to slowly move towards a car after entering a limit switch effectiveness self-checking mode; after the elevator car extrudes the activity limit switch, the activity limit switch acts to be switched off to cut off an elevator safety loop, so that an elevator stops running; then the controller verifies whether the activity limit switch is valid or not according to whether the elevator safety loop is disconnected or not, so that the effectiveness of the activity limit switch can be self-checked; and after the effectiveness of the activity limit switch is verified, the controller can control the activity limit switch to be away from the car and return to the initial position of a hoistway. According to the elevator safety protection system, after effectiveness self-checking of the limit switch is carried out, the limit switch can be automatically restored to the initial non-action normally-closed state, and the elevator safety loop is connected again, so that the elevator safety loop is restored to the normal state, an elevator can be restarted to operate, subsequent self-checking can be carried out conveniently, and the elevator safety is improved.

    本发明公开了一种电梯安全防护系统,在进入极限开关有效性自检模式后,控制器先控制活动极限开关向靠近轿厢方向缓慢移动,当电梯轿厢挤压活动极限开关后,活动极限开关动作断开,切断电梯安全回路,使电梯停止运行,而后控制器根据电梯安全回路是否断开验证活动极限开关是否有效,能够对活动极限开关有效性进行自检;在对活动极限开关有效性进行验证后,控制器会控制活动极限开关远离轿厢,回到井道初始位置。该电梯安全防护系统,在进行极限开关有效性自检后,能够使极限开关自动恢复至初始未动作常闭状态,使电梯安全回路重新接通,从而使电梯安全回路恢复正常状态,使电梯能够重新启动运行,以便进行后续自检,提高电梯安全性。


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    Titel :

    Elevator safety protection system


    Weitere Titelangaben:

    电梯安全防护系统


    Beteiligte:
    GU HAOTIAN (Autor:in) / ZHANG HAORAN (Autor:in) / LIANG JIAJIE (Autor:in)

    Erscheinungsdatum :

    2021-03-26


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    IPC:    B66B Aufzüge , ELEVATORS



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