| 摘要 |
<p>The box has an engine shaft (12) with engine pinions (16C - 16E) mounted movable in rotation around the shaft. Friction elements (38A, 38B) with respective friction surfaces (39A, 39B) are integrated in rotation with the pinions (16C - 16E) and the shaft (12), respectively. A unit (40) maintains the surfaces in constant contact to synchronize relative speeds of rotation of the pinions (16C - 16E) and the shaft (12), when dogs (28A - 28C) are engaged. The dogs (28A - 28C) take blocked and disengaged positions to block and allow rotation of driven pinions (18B - 18E) of a driven shaft (14).</p> |
