| 摘要 |
PURPOSE: To improve the riding comfort of an operator as well as to prevent sudden starting of a machine main body by constituting an automatic speed changing structure so that a continuously variable transmission may be automatically operated in the neutral stopping position just after an engine is started, in a working vehicle provided with an automatic speed changing means for automatically changing the speed of the continuously variable transmission. CONSTITUTION: In an automatic speed changing structure wherein supply and discharge of operating oil to an oil pressure cylinder 7 for performing the speed changing operation by changing the swash plate angle of a continuously variable transmission 6 is controlled by an electromagnetically operated control valve 8, a potentiometer 9 for detecting the extending and contracting position of the oil pressure cylinder 7 is provided. Moreover, a speed change lever 11 to be freely operated on the forward side F and the backward side R while pinching the neutral stopping position N, and a selector switch 12 for selecting the automatic speed changing state and the manual speed changing state are provided on an operating part. When the selector switch 12 is in the automatic speed changing position in the engine starting operation, the continuously variable transmission 6 is returned to the neutral stopping position N through the oil pressure cylinder 7 by a controller 14 regardless of the operating position of the speed change lever 11. |
