제어부는, 유지부(10)의 하강 동작 및 상승 동작 중 적어도 한쪽인 승강 동작을 행하는 경우에, 상기 승강 동작이 행해지는 유지부(10)의 높이 범위인 승강 동작 범위에서의, 구동 모터(23)의 단위회전량당의 유지부(10)의 승강량인 단위승강량을, 드럼(21)에 권취되어 있는 벨트(22)의 외주면의 직경이 권취 및 조출에 의해 변화하는 것에 따라 구하고, 단위승강량에 기초하여, 승강 동작을 위한 구동 모터(23)의 회전량을 결정한다.

    While a controller performs an elevation operation that is at least either an operation of lowering a holder or an operation of raising the holder, the controller (i) calculates a unit elevation amount, which is an amount by which the holder is raised or lowered per unit rotation amount of the drive motor in an elevation operation range that is a range of heights of the holder in the elevation operation, in accordance with a change in a diameter of an outer circumferential surface of a belt wound around a drum due to winding and unwinding of the belt, and (ii) determines a rotation amount of a drive motor for the elevation operation based on the unit elevation amount.


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    Title :

    ARTICLE ELEVATING DEVICE


    Additional title:

    물품 승강 장치


    Contributors:

    Publication date :

    2024-02-27


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Korean


    Classification :

    IPC:    B66C Krane , CRANES / B66D Haspeln , CAPSTANS



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