To highly accurately detect a layer number of a wire rope of a winch drum.SOLUTION: A monitoring device of a winch drum for monitoring a state of the winch drum 361 comprises an imaging unit 628 which images the winch drum 361. The winch drum 361 comprises: a winding part 362 around which a wire rope 32 is wound; and flange parts 363, 364 which are provided on both sides of the winding part 362. A first mark 45 is provided on the inner side surfaces of the flange parts 363, 364. The monitoring device includes a specification unit 611 which specifies a layer number of winding of the wire rope 32 around the winding part 362 by detecting the first mark 45 in a photographed image captured by an imaging unit.SELECTED DRAWING: Figure 4

    【課題】ウインチドラムのワイヤロープの層数をより高精度に検出する。【解決手段】ウインチドラム361の状態を監視するウインチドラムの監視装置であって、ウインチドラム361を撮像する撮像部628を備え、ウインチドラム361は、ワイヤロープ32が巻き回される巻き回し部362と、巻き回し部362の両側に設けられたフランジ部363,364とを有し、フランジ部363,364の内側面に第1印45が設けられ、撮像部により撮像された撮像画像における第1印45を検出することでワイヤロープ32が巻き回し部362に巻き回された層数を特定する特定部611を有する。【選択図】図4


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    Title :

    MONITORING DEVICE OF WINCH DRUM AND WINCH DRUM


    Additional title:

    ウインチドラムの監視装置及びウインチドラム


    Contributors:

    Publication date :

    2023-10-13


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B66C Krane , CRANES



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