Self-tensioning and belt tension setting device has thrust rod movable axially to compensate for any change in belt tension, detector of limit position for outward thrust rod movement

摘要

The belt tensioning device has a cylinder (11), a thrust rod (20) sliding axially in the cylinder and a spring (26) that seeks to drive the thrust rod out of the cylinder. The thrust rod can move axially to compensate for any change in belt tension. A detector (30) detects a limit position for an outward movement of the thrust rod.