| 摘要 |
PROBLEM TO BE SOLVED: To provide a method of lifting a coil packed with a wrapping paper capable of preventing the automatic operation of a crane from being interrupted by detecting the extrusion of the coil wrapping paper. SOLUTION: When an automatic sling in a coil storage house lowers toward an indicated coil 3 packed with a wrapping paper and a collision detection sensor 2a reacts and temporarily stops an image focused from right above the coil 3 is performed by edge extraction processing, the maximum rectangle width inscribed in an area surrounded by an edge is obtained. The width is compared with the registered width of the indicated coil 3 to obtain a deviation and, when the deviation is within a specified range, the wrapping paper is judged to be extruded and the temporary stop is reset to perform the lowering operation.
|
