| 摘要 |
PROBLEM TO BE SOLVED: To provide a novel overhead crane capable of preventing the lift of wheels from rails caused by the vertical shake of an overhead crane girder in case of vertical earthquake motion. SOLUTION: In this overhead crane formed by laying the girder 2 provided with a trolley 5, in a travelable manner between the rails 1, 1 fixed to the ceiling, the traveling wheel 3 of the girder 2 is provided with caterpillars 13 formed of a magnet body to travel while being attracted to the rail 1. COPYRIGHT: (C)2006,JPO&NCIPI
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