| 摘要 |
PROBLEM TO BE SOLVED: To provide an implement elevation controller of a working vehicle, which uses an inexpensive and mechanical position control valve to simplify a system related to elevation in high freedom. SOLUTION: This implement elevation controller of the working vehicle wherein a position lever 20 is connected to a position control valve 90 through a control link mechanism, and the position control valve 90 is switched in response to the operation position of the position lever 20 to operate a hydraulic actuator to liftably control the implement 14 supported on a travel machine frame, is characterized by connecting a means for detecting the elevation height of the implement 14, a tilling depth-setting means, a means for detecting the tilling depth of the implement, a normally or reversely rotatable motor 95 connected to the position control valve 90 through a link, and an elevation switch disposed in an elevation operation means, to a control means 60, enabling to independently rotate a control link connected to the position lever 20 and a link connected to the motor 95, and enabling to control the elevation and tilling depth of the implement with the motor 95. COPYRIGHT: (C)2008,JPO&INPIT
|
