| 摘要 |
PURPOSE:To selectively use a speed change pattern in accordance with the running condition of a working vehicle by providing a control means possible to select the pattern to a control condition operating a main speed change actuator and non-control condition. CONSTITUTION:A main transmission 2, possible to perform a speed change continuously variably, and a stepped subtransmission 8 are connected in series. A control means 100, which automatically actuates a main speed change actuator 49 to a deceleration side so as to reduce a change of car speed when the subtransmission 8 is controlled to an acceleration side, is provided. The control means 100 is constituted by being possible to select a controlled condition operating the main speed change actuator 49 and non-controlled condition being based on information of a subspeed change control detecting means S2. Thus, a speed change pattern can be selectively used in accordance with the running condition of a working vehicle. |
