| 摘要 |
PURPOSE:To properly control the inclination direction of a power roller in the reverse direction even if the input revolution direction is reversed by drive- controlling an actuator by the first speed change controller in case of advance and by the second speed change controller in case of retreat by switching the first and second speed change controllers on the basis of the result of the detection of an advance/retreat detecting means. CONSTITUTION:When a vehicle is switched to the advance or retreat state by an advance/retreat switching means, the switching is detected by an advance/ retreat detecting means 90, and a controller switching means 80 is operated. Therefore, in case of advance, the hydraulic actuators 50, 52, 54, and 56 are driven by the first speed change controller 60 for the exclusive use for advance, and a power roller is tilted in the direction corresponding to the advance state, while in case of retreat, the hydraulic actuators 50, 52, 54, and 56 are driven by the second speed change controller 70 for the exclusive use for retreat, and the power roller is tilted in the direction corresponding to the retreat state. Then, the inclination quantity of the power roller is property controlled in corresponding with a troidal speed change part. |
