| 摘要 |
PURPOSE:To decrease a change of speed of a working vehicle by connecting a main transmission to a subtransmission in a series condition and providing a control means automatically actuating a main speed change actuator at specific time. CONSTITUTION:A main transmission 2, possible to obtain a speed change steplessly, and a stepped subtransmission 8, changing a speed in two or more steps, are connected in a series condition. A main speed change actuator 49, automatically controlling the main transmission 2, and a subspeed change control detecting means S2, detecting a select control of the subtransmission 8, are provided. A control means 100, which automatically actuates to a deceleration side the main speed change actuator 49 so as to reduce a car speed when the subtransmission 8 is controlled to an acceleration side being based on information of the subspeed change control detecting means S2, is provided. Thus, a change of speed is reduced in a working vehicle even when the subtransmission is controlled to the acceleration side. |
