| 摘要 |
PROBLEM TO BE SOLVED: To provide a crane capable of winding up or down a main winding hook and an auxiliary winding hook with a simple configuration.SOLUTION: A crane 1 is configured in such a manner that a main winding hook 24 can be lifted by winding/delivering of a wire rope 22 by a drum 23 in the fixed state of an auxiliary winding hook 25 by a second fixing mechanism 27, and the auxiliary winding hook 25 can be lifted by winding/delivering of the wire rope 22 by the drum 23 in the fixed state of the main winding hook 24 by a first fixing mechanism 27. In other words, by using the same (common) one wire rope 22 and the same (common) one drum 23, the main winding hook 24 and the auxiliary winding hook 25 can be selectively lifted. Thus, the crane 1 can be simplified in configuration to be light.SELECTED DRAWING: Figure 3 |
