| 摘要 |
PROBLEM TO BE SOLVED: To perform a speed change operation in an auxiliary transmission, transmitting torque from an engine. SOLUTION: A main transmission 10 has a main input shaft 11 which is provided with a plurality of driving gears and has power of the engine 13 transmitted and a main output shaft 12 which is provided with a plurality of driven gears engaged with the driving gears and transmits power to drive shafts 14a and 14b, and a speed change gear train for transmitting power is switched by main transmission switching mechanisms 41 to 43. The auxiliary transmission 60 has an auxiliary input shaft 59 fixed with an input gear 62 and an auxiliary output shaft 61 rotatably mounted with an output gear 63, and a direct connecting state and a speed reducing or speed increasing state are switched by an auxiliary transmission switching mechanism 67. An auxiliary transmission clutch 71 is provided between the output gear 63 and the auxiliary output shaft 61. In the auxiliary transmission 60, an electronic control throttle is operated, and the speed change operation is performed, transmitting torque via the auxiliary transmission clutch 71. |
