| 摘要 |
PURPOSE:To avoid exactly and automatically an obstacle by a simple operation, by changing automatically front wheels, rear wheels and a steering operating angle in accordance with a result of a distance detection by a distance detecting sensor. CONSTITUTION:A control device 5 inputs a result of a detection of a distance extending from an ultrasonic sensor A to an obstacle X, and basing on it, this device calculates and outputs a control signal for driving solenoid valves 8, 9 for operating front wheels 2, rear wheels 3, and hydraulic cylinders 6, 7 which execute a steering operation at a prescribed steering angle, and a control signal for driving a motor 11 for operating a speed change position of a speed changing device 10. In this way, a car body can be avoided by a result of a detection of the obstacle X by only one sensor A. In this regard, in case when the obstacle cannot be avoided, an alarm is generated by an alarm device 12. |
