Belt drive system

Details Belt drive system Belt drive system

1989-09-18

1990-06-12

Bui, Thuy M.

Endless belt power transmission systems or components

Means for adjusting belt tension or for shifting belt,...

Tension adjuster or shifter driven by electrical or fluid motor

474135, F16H 712

Patent

active

049329260

ABSTRACT:
In a belt drive, a tensioning roller acts onto a section of a belt. The tensioning roller is biased along a tensioning roller movement path such as to provide a tension of the belt. The tension of the belt is responsive to the driving direction of the belt. A higher tension occurs in a normal driving direction of the belt, and a lower tension occurs in a reverse driving direction of the belt. In the reverse driving direction of the belt there is a risk of disengagement between the belt and respective belt pulleys. A damper is provided for damping the movement of the tensioning roller along the tensioning roller movement path. In order to prevent disengagement of the belt and the respective belt pulleys, the damper is locked when a reverse driving direction occurs and/or when operational conditions occur under which there is a likelihood of the reverse driving direction to occur.

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