| 摘要 |
An overload control mechanism working as a safety mechanism for preventing a fall of cargo when a machine is overloaded during cargo handling operation. The overload control mechanism includes a driving gear, a tapered disk arranged on the inner circumference of the driving gear and tapered to the axis of the driving gear, a first friction disk having a tapered friction surface in contact with the tapered surface on the inner side of the tapered disk, for fixing a spindle that is inserted through the first friction disk, and a second friction disk having a tapered friction surface in contact with the tapered surface on the outer side of the tapered disk. Both the first friction disk and the second friction disk with the tapered disk of the driving gear clamped therebetween rotate integrally. The second friction disk is fastened by a nut which is tightened onto a support shaft of the first friction disk with a spring therebetween.
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