Constant-tension conveyor drive for thermal processing...

Details Constant-tension conveyor drive for thermal processing... Constant-tension conveyor drive for thermal processing...

F - Mech Eng,Light,Heat,Weapons

16

H

138/41.15

F16H 39/02 (2006.01) B65G 23/44 (2006.01) F25D 3/11 (2006.01)

Patent

CA 1090231

Abstract of the Disclosure A self-compensating constant-tension drive system for a belt conveyor used in a cryogenic freezing tunnel or other elongated thermal processing apparatus, comprising a hydraulic motor driving the drive pulley of the conveyor, a hydraulic pump driven by the tensioning pulley, and a pressure relief valve connected to the outlet of the pump to inhibit flow from the pump and thus inhibit rotation of the pump and tensioning pulley until a predetermined tension is established in the upper run of the belt; the belt is longer than the inter-pulley spacing to allow for substantial thermal expansion and contraction, and the excess belt length is stored in a catenary sag adjacent the drive pulley.

312099

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