| 摘要 |
The invention concerns a device for coupling two shafts designed to rotate in the extension of each other relative to a housing (4). The two shafts are coupled by a dog. The device comprises disconnect means for uncoupling the dog (9). The invention is characterized in that the disconnect means comprise a screw integral with one of the shafts (3), a nut integral with a flywheel (19) and co-operating with the screw (17), the screw (17) and the nut (18) having an axis substantially merging with axis of rotation (1) of the shafts (2, 3), a brake (23) for the rotation of the flywheel (19) relative to the housing (4), and in connected position, braking the flywheel (19) loosens the nut (18) from the screw (17) and drives one of the shafts (3) in translation along said axis (1) so as to uncouple the dog (9). The particular structure of the disconnect means enables the shafts to be uncoupled when they are rotating.
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