A lifting device according to the present invention prevents an error caused due to the overload of a servo motor. The lifting device comprises: a lift part which lifts a lifting platform; and a servo motor which lifts the lifting platform by powering the lift part. When the height of the lifting platform is maintained by stopping the lifting of the lifting platform, the servo motor is controlled to allow the lifting platform to descend to a certain height after the lifting platform is stopped.

    본 발명은 승강용 서보 모터의 과부하 에러를 방지한다. 본 발명의 승강 장치는, 승강대를 승강시키는 기구부와, 기구부를 구동함으로써 승강대를 승강시키는 서보 모터를 구비하며, 승강대의 승강을 정지시켜 높이를 유지시킬 때에, 승강대의 정지 후에 서보 모터에 의해 승강대를 소정 높이만큼 하강시키도록 서보 모터를 제어한다.


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    Title :

    LIFTING DEVICE, STACKER CRANE AND METHOD OF MAINTAINING HEIGHT OF LIFTING PLATFORM


    Additional title:

    승강 장치와 스태커 크레인 및 승강대의 높이 유지 방법


    Contributors:

    Publication date :

    2016-02-19


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Korean


    Classification :

    IPC:    B65G TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS , Transport- oder Lagervorrichtungen, z.B. Förderer zum Laden oder Abladen / 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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