| 摘要 |
<p>A variable speed gear box (1) comprising at least two shafts, i.e. an input shaft and an output shaft (5), in addition to a plurality of gear pairs, loose wheels (30, 31, 32, 33, 34, 35) which can be rotationally fixed to a first shaft (5) by means of couplings (40, 41, 50), shift wheels (20, 21, 22, 23, 24, 25) that are rotationally fixed with a shaft (4), and a shiftable starting coupling (3) arranged on the input side. At least one of the couplings (40, 51, 50) is embodied as a powershift coupling (50). The starting coupling (3) and the powershift coupling (50) can he actuated by at least one actuating unit. For practical reasons, the powershift coupling can be engaged when the starting coupling (3) is at least partially engaged.</p> |
