| 摘要 |
PURPOSE:To enable the adjustment of the tension of a belt only with a centrifugal thrust loader and enable the control of the pulley ratio only with a hydraulic thrust controller, by providing the centrifugal thrust loader for a driving pulley, and providing the hydraulic thrust controller for a driven pulley. CONSTITUTION:A centrifugal thrust loader 5 is provided so that a thrust corresponding to input rotational frequency is applied to the movable member 4 of a driving pulley 1. A hydraulic thrust controller 25 is provided to push the movable member 23 of a driven pulley 20 to obtain an appropriate pulley ratio corresponding to an operating condition. As a result, the tension of a belt can be adjusted only by the centrifugal thrust loader 5, and the pulley ratio can be regulated only the hydraulic thrust controller 25. Control is thus simplified. |
