| 摘要 |
PURPOSE:To turn front wheels and rear wheels in opposite directions at the maximum steering angle and to maximize the turning performance of a working vehicle by positioning the center of a front sensor outside of the curvature orbit of a guide cable and the center of a rear sensor inside of the curvature orbit in the case of turning the vehicle at minimum curvature radius. CONSTITUTION:In the case of turning an automatic traveling lawn mower at minimum curvature radius, the center 18 of a front pickup coil 11 is positioned outside of the curvature orbit of a guide cable 5. Accordingly, the front wheels 2 are turned at the maximum steering angle toward the inside of the curvature orbit of the guide cable 5. On the other hand, the center 19 of a rear pickup coil 14 is positioned outside of the curvature orbit of the guide cable 5 and the rear wheels 3 are turned at the maximum steering angle toward the outside of the curvature orbit of the guide cable 5. Accordingly, the front wheel 2 and the rear wheel 3 are turned in opposite phase mode and steered at maximum steering angle to maximize the turning performance of the automatic traveling lawn mower. |
