| 摘要 |
PROBLEM TO BE SOLVED: To provide a working vehicle and its speed control method capable of inexpensively providing the proper working motive power and the extremely low speed travelling with a simple structure. SOLUTION: A working vehicle comprises a transmission 30 for transmitting an engine speed, a connection force control mechanism 120 for controlling the clutch mechanism connection force of the transmission 30, an output side revolution speed detecting mechanism 106A for detecting the output side revolution speed of the transmission 30, an accelerator pedal angle detecting mechanism 113 for detecting the pedal angle of an accelerator pedal 107, and a controller 100 for judging whether an extremely low speed travelling mode is executed or not on the basis of an output side revolution speed signal of the output side revolution speed detecting mechanism 106A, a gear position signal of a gear position detecting mechanism 31, and a pedal angle signal of an accelerator pedal angle detecting mechanism 113, and controls the connection force of the connection force control mechanism 120 to control the transmission output side revolution speed to a predetermined extremely low speed in the super low speed travelling mode. |
