| 摘要 |
<p>Hydraulic fluid is guided to a lock-up clutch device via a simple configuration in a configuration in which the drive shaft of a hydraulic pump is positioned in the interior of a transmission input shaft. This work vehicle has a hydraulic pump and a transmission (1). The transmission (1) is provided with: a transmission body (5) having a cylindrical input shaft (4); a torque converter body (9); a lock-up clutch device (10); a PTO drive shaft (12); and an oil passage (61). The lock-up clutch device (10) has a piston (41), an oil chamber (16b) formed on the rear surface of the piston (41), and a clutch. The PTO shaft (12) passes through the interior of the input shaft (4), is positioned along the same axis as the input shaft (4), and transmits driving force to the hydraulic pump (13). The oil passage (61) is formed between the inner-circumferential surface of the input shaft (4) and the outer-circumferential surface of the PTO shaft (12), and connects to the oil chamber (16b) in the lock-up clutch device (10).</p> |
