本发明的作业车辆具备对来自驱动源的旋转动力进行变速并向变速输出轴进行工作传递的主变速构造、变速操作构件、检测所述变速输出轴的转速的输出传感器、以及控制装置。主变速构造具有HMT构造等无级变速构造、和能够进行第1变速比的第1传动状态和比第1变速比高速的第2变速比的第2传动状态的切换的多级变速构造。控制装置与变速操作构件向前进侧的增速操作相应地使无级变速构造的输出向前进侧增速,并且在变速输出轴的转速到达切换速度时进行从多级变速构造的第1传动状态向第2传动状态的切换,切换速度被设定为超出作业速度范围的速度。
A working vehicle (200-200C) of this invention includes a main speed change structure (1-1C) changing a speed of rotational power from a drive source (210) and transmitting the resulting rotational power to a speed change output shaft (45), a speed change operation member (90), an output sensor (95) detecting a speed of the speed change output shaft (45), and a control device (100). The main speed change structure (1-1C) includes a continuously variable speed change structure (5-5C) such as an HMT structure, and a multi-speed speed change structure (6-6C) capable of switching between a first power transmission state with a first gear ratio and a second power transmission state with a second gear ratio providing a higher speed than the first gear ratio. The control device (100) causes the continuously variable speed change structure (5-5C) to be accelerated to a forward travel side in accordance with an accelerating operation of the speed change operation member (90) in a forward travel direction, and causes the multi-speed speed change structure (6-6C) to be changed from the a first power transmission state to a second power transmission state when the rotational speed of the speed change output shaft (45) reaches a switching speed set to exceed a work speed range.
作业车辆
2022-10-28
Patent
Electronic Resource
Chinese