CPC B66C 23/585 (2013.01) [B66C 13/18 (2013.01); B66C 13/46 (2013.01); B66C 23/42 (2013.01); B66C 23/88 (2013.01)] | 7 Claims |
1. A method of controlling a working machine that raises or lowers a load using a plurality of sling wires suspended by a hook at an end of a wire rope suspended on a telescopic boom or jib, detects a tension of the wire rope using a detection section, and determines plane coordinates of the hook from an image capturing in a vertically-downward direction at predetermined intervals by a camera provided on the leading end of the telescopic boom or the leading end of the jib, the method comprising:
pulling in the wire rope until determining that the wire rope has reached a tensioned state in a state where the load is suspended by the plurality of sling wires, and before lift-off of the load;
moving a leading end of the telescopic boom or jib to same plane coordinates as those of the hook at a time of determining the tensioned state, wherein the plane coordinates are calculated by analyzing the image captured by the camera; and
repeating the determining and the moving.
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