| 摘要 |
A safety brake operable in the event of a support failure between contiguous load carrying component parts of elevating equipment such as the mast of a stacker crane in which the parts are normally supported one dependent on the other. Tapered brake shoes secured spaced apart on one of the component parts are normally held disengaged from a gripping bar vertically extending therebetween and secured to the other component part. In the event of failure in the normally connecting support structure, brake operation is triggered by an associated velocity-sensitive actuator enabling the shoes to be wedgedly forced into brake engagement with the gripping bar.
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