| 摘要 |
<p>A countershaft transmission (10) provides at least three forward and three reverse speeds and includes a first countershaft (22) having a second gear (126) secured thereto, a third gear (130) rotatable thereon, and a first clutch (152) for connecting the third gear thereto. A second countershaft (24) has a fourth gear (196) secured thereto which is intermeshed with the second gear (126), a fifth gear (198) rotatable thereon, a sixth gear (200) rotatable thereon, a seventh gear (210) secured thereto, a second clutch (202) for connecting the fifth gear (198) thereto, and a third clutch (204) for connecting the sixth gear (200) thereto. A first gear (118) is adapted to drive one of the side-by-side third and fifth gears (130, 198), and a third countershaft (26) is disposed elevationally below them. The third countershaft (26) has an eighth gear (222) secured thereto which is intermeshed with the sixth gear (200). Ninth and tenth gears (228, 232) are rotatable on the third countershaft and are selectively connected thereto by a fourth clutch (230) and a fifth clutch (234) respectively. The five rotating clutches are of the interleaved plate type, are hydraulically engaged and mechanically disengaged, and are generally internested between the walls (46, 62) of the housing (12) for compactness. Up to eight forward and four reverse speeds can be obtained with but minor alterations.</p> |
