| 摘要 |
PROBLEM TO BE SOLVED: To solve a problem wherein a conventional hoisting tool guiding device cannot move along crossing rails unless a turn table is provided on a part where the rails cross each other. SOLUTION: In this hoisting tool guiding device, a circular holding disk having an outside diameter corresponding to an inner side width of a hoisting tool guide rail having a rectangular cross section is inserted in the hoisting tool guide rail, and a hoisting tool guide holding rod supported by the circular holding disk is extended downward through a slit formed on a lower surface of the hoisting tool guide rail. The circular holding disk is provided with a plurality of rotatable main spheres having a part protruding from the lower surface thereof and supported by an inner surface of the hoisting tool guide rail. The number of the main spheres is set odd-numbered, and the main spheres are arranged to be separated from each another along a circumferential direction. COPYRIGHT: (C)2004,JPO
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