| 摘要 |
<p>Said powershift gearbox has a coupling gear (1) actuated by a main input shaft (5), a rotary actuator (2) allocated to said coupling gear and a selector gearbox (4) incorporated downstream of said coupling gear. Coupling shafts (10 and 11) can be alternately coupled to the gearbox (4). To obtain a variable shift logic and to reduce the number of parts required for the gearbox (4), a differential drive (3) is incorporated downstream from the coupling gear (1); its input shaft (14) can be alternately coupled to the coupling shafts (10 and 11). The differential drive (3), in which the speed of the main input shaft can be superimposed on the speed of the input shaft (14), has a coupling shaft (21) which can be directly coupled to a main output shaft (24) or to the gearbox.</p> |
