To provide a crane that can detect a ground level and a rotation angle of a cargo with high accuracy regardless of day, night, or weather conditions.SOLUTION: There is provided a crane comprising a boom 31, a wire rope 32 hanging from the boom 31, and a hook 33 that moves up and down by winding and unwinding the wire rope 32, for carrying a load L with the load L suspended from the hook 33. There are also included a camera 55 attached to the boom 31, and a marker 70 attached to the hook 33 or the load L. A dot pattern 74 is drawn by a light-emitting device 71 on a surface of the marker 70 to be photographed by the camera 55.SELECTED DRAWING: Figure 1
クレーン
2023-05-30
Patent
Elektronische Ressource
Japanisch