| 摘要 |
PURPOSE:To enable a crawler driving mechanism to be controlled in direction by a steering wheel, by detecting a rotated direction and a steering angle of a steering wheel and by controlling a flow control regulator in accordance with the detection signal. CONSTITUTION:When a steering wheel 14 is rotated counterclockwise, a veriable voltage V1 is decreased by a left-hand linear displacement gauge 20 while a variable voltage V2 is kept constant by a right-hand linear displacement gauge 21. Accordingly, only an output voltage VX from a left-hand steering detection unit 29 is varied. When a steering angle reaches a certain angle, the variable voltage V1 becomes 5V and the output voltage VX becomes zero. When exceeding that angle, the output signal VX becomes minus. When VX is zero, the delivery of a left-hand variable capacity pump 33 becomes zero so that a left-hand motor 31 is stopped. An autobody 3 is thereby pivot turned counterclockwise. |
