Free rotation control apparatus of hoist and traction machine.

摘要

The invention relates to a free-rotation control apparatus in a hoist assembly in which there is provided, between an operating handle 18 and a stopper 17 provided in a driving shaft 5, a free-rotation spring 19 for urging the handle 18 toward the driving member 8 and urging the driving member 8 in the brake releasing direction. When the operating handle 18 is pulled out, the driving member 8 is rotated by a torsional urging force of the spring 19 so as to separate from a driven member 7. Thereupon a braking action caused by a braking ratchet wheel 11 and braking plates 9, 10 is cancelled and engagement lugs 31 are brought into resilient contact with free-rotation control surfaces 35 by an axial urging force of the spring 19, so that the free-rotation control can be maintained. <IMAGE>