| 摘要 |
The gear-changing module consists of a shaft (10) carrying idling gears (11, 12) with friction cones (111, 122), teeth (315, 325), and a synchroniser (4) with a hub (44), adjacent synchronising rings (41, 42) and a sliding sleeve (43) to connect the rings and gear teeth. The hub is mounted on the end (100) of the shaft (10); the first of the gears (11) is located on the shaft between the second gear (12) and the synchroniser (4), and the second gear is connected to its teeth (325) by a cylindrical sleeve (320) passing between the shaft and the first gear. In addition, the hub has an active bell-shaped section to which the sliding sleeve (43) is attached.
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