| 摘要 |
<p>PURPOSE:To reduce generation of a shift shock by setting energizing force of return urging means, which acts on hydraulic actuators arranged in a fixed member further to operate friction clutches, stronger than the energizing force of engagement urging means. CONSTITUTION:Friction clutch hydraulic actuators 71, 61 are arranged in a fixed member 100, and an influence of centrifugal oil pressure in friction clutches C2, C1, frequently operated during running and rotation, is eliminated. While bearings 76, 66 are interposed in connecting means 75, 65 of the hydraulic actuators 71, 61 to clutch engagement urging means 77, 67, and generation of a shift shock is reduced by placing pistons 71a, 61a, 61b in a non-rotating condition. Further a load, which acts on the bearings 76, 66, is reduced by setting energizing force of return urging means 74, 64 larger than that of the engagement urging means 77, 67. Thus, a life of the bearing is extended, further generation of the shift shock is reduced, and quick engagement and disengagement of the clutch can be performed.</p> |
