| 摘要 |
<p>A mechanical transmission comprises a shell (1), an input shaft (2), and an output shaft (3). An input gear (15) is sleeved on a tail portion of the input shaft (2). Two epicyclic gear trains are arranged in the shell (1). A gear ring (6) is supported in the shell (1) through a bearing. The gear ring (6) is engaged with a planetary gear (5) through internal teeth, and the gear ring (6) is connected to a transmission mechanism (16). Countershaft gears (17, 18, 19, 20) are sleeved on a planet carrier (7) of the epicyclic gear train. The countershaft gears (17, 18, 19, 20) are engaged with output gears (21, 22, 23, 24). The output gears (21, 22, 23, 24) are sleeved on the output shaft (3). Two epicyclic gear trains are disposed in the shell and engaged with the input shaft; the two epicyclic gear trains are switched between the planetary gear train and the differential gear train, achieving the purpose of unintermittent gear shift. The mechanical transmission has a simple structure and low energy consumption.</p> |
