| 摘要 |
<p>The device has two main motors for rotating respective main shafts (5, 13) that are provided with first- and second pinions (24, 25). A motor torque transmission unit (23) comprises a drive gear (26) mounted on a pulley (2), and a third pinion (27) is engaged with the drive gear. The third pinion is movable in translation between a first position (P) in which the third pinion is geared with the first pinion, and a second position in which the third pinion is geared with the second pinion. The third pinion is simultaneously geared with the first and second pinions in an intermediate position.</p> |
