Tensioning device for flexible driving belts

Details Tensioning device for flexible driving belts Tensioning device for flexible driving belts

F - Mech Eng,Light,Heat,Weapons

16

H

74/264

F16H 7/14 (2006.01) F16H 7/08 (2006.01) F16H 7/12 (2006.01)

Patent

CA 2012303

ABSTRACT OF THE DISCLOSURE A tensioning device is provided for a flexible belt wound around the pulleys of a drive mechanism. The tensioning device includes an elastic biasing element and a damping mechanism. The biasing element applies a force on the belt in a predetermined direction to oppose belt slackenings. The damping mechanism dampens movements of the belt. The biasing element and the damping mechanism constitute a single unit wherein both exert on the belt forces which act on the belt at the same time in a predetermined direction to maintain a predetermined tensioning. The biasing element acts independently of the damping mechanism in the presence of considerable slackenings of the belt and functions as part of the damping mechanism to dampen thrusts of the belt acting on the device in the direction opposite to the predetermined direction. A connection unit connects the damping mechanism to the biasing element. This connection unit is an elastic system which applies a reaction force according to the predetermined direction in which the biasing element acts on the belt.

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