Winch drive means

Details Winch drive means Winch drive means

B - Operations, Transporting

66

D

254/103

B66D 1/02 (2006.01) B66D 5/24 (2006.01)

Patent

CA 1227188

ABSTRACT Winch drives for intermittently adjusting tension in con- veyors must be braked when inoperative. An exposed band brake is prone to damage and oiling; an enclosed disc brake held applied by an end thrust exerted by the load on the winch can be bypassed by a one-way clutch in only one driving direction and causes excessive drag in the other driving direction. By dispensing with the one-way clutch and introducing a double- helical driving connection, there is created an opposing axial force which exceeds the above-mentioned end thrust and releases the disc brake automatically in both driving directions.

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