| 摘要 |
PURPOSE:To effect reliable prevention of follow-up rotation of each hydraulic clutch by a method wherein a brake is mounted on the input shaft of an auxiliary shift part, and based on operation of the brake, a main shift output shaft and an input shaft are locked. CONSTITUTION:A brake 9 is mounted on an input shaft 7 of an auxiliary shift part 6 interlocking with main shift output shafts 2 and 3. When the brake 9 is operated, the input shaft 7 is locked, and the main shift output shafts 2 and 3 interlocking with the input shaft 7 are locked. The input side of each of hydraulic clutches C1, C2, and C3 of a main shift part 4 is locked. The input side of each of hydraulic clutches CH, CM, CL, and CR of a auxiliary shift part 6 is locked. This constitution reliably prevents follow-up rotation of the hydraulic clutch in a disengaging state. |
