To enable sharing of a camera for photographing a wire rope of a wire rope inspection device in a crane and a drum monitoring camera.SOLUTION: This wire rope inspection device comprises: a second camera 55 that photographs at least a part of a wire rope 42 between a slide sheave 40 on which the wire rope 42 is hung and which guides the wire rope 42 and moves in the axial direction of a drum 17 along with the movement of the take-up position 57 of the wire rope 42 to the drum 17 and the drum 17; a second support 52 and a locking member 53 that move the second camera 55 in the axial direction of the drum 17 corresponding to the movement of the take-up position 57; and calculation means for calculating the diameter of the wire rope 42 from an image captured by the second camera 55. The second camera 55 includes the full longitudinal length of the drum 17 at all positions within the moving range of the second camera 55 corresponding to the movement of the take-up position 57 in a field angle.SELECTED DRAWING: Figure 3
【課題】クレーンにおけるワイヤロープ点検装置のワイヤロープを撮影するカメラと、ドラム監視カメラを共用する。【解決手段】ワイヤロープ42が掛け回されてワイヤロープ42をガイドし、ワイヤロープ42のドラム17への巻き取り位置57の移動にしたがってドラム17の軸方向に移動するスライドシーブ40とドラム17との間の、ワイヤロープ42の少なくとも一部を撮影する第2カメラ55と、巻き取り位置57の移動にしたがって、ドラム17の軸方向に第2カメラ55を移動させる第2支持部52および回り止め53と、第2カメラ55の撮影した画像から、ワイヤロープ42の直径を算出する算出手段と、を備える。第2カメラ55は、巻き取り位置57の移動にしたがう第2カメラ55の移動範囲の全ての位置でドラム17の軸方向全長を画角に含む。【選択図】図3
WIRE ROPE INSPECTION DEVICE AND CRANE
ワイヤロープ点検装置およびクレーン
2020-02-13
Patent
Electronic Resource
Japanese
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