Turbomachine rotor
AssigneeSafran Helicopter Engines
InventorsAlexandre Auduberteau, Julien Fabrice Girardot, Pierre Chabanne
Life of this patent
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Abstract
The invention concerns a turbomachine rotor (1), characterised in that it comprises a threaded or tapped part (3, 6) and a damping nut (8) screwed onto the threaded or tapped part (3, 6) so as to allow the threads of the nut (8) and of the threaded or tapped part (3, 6) to rub against each other in the event of vibration of the rotor (1).
Claims17
A turbomachine rotor (1), characterised in that it comprises:
- a threaded or tapped part (3, 6);
- and
- a damping nut (8) screwed onto the threaded or tapped part (3, 6) so as to allow threads of the nut (8) and of the threaded or tapped part (3, 6) to rub against one another in the event of vibration of the rotor (1), the nut (8) comprising:
- a stop (10) capable of bearing axially on a complementary stop (5) of the threaded or tapped part (3) so that friction between the stop (10) and the complementary stop (5) occurs when the threaded part (3) is in rotation, the stop of the nut (8) being formed by a radially extending flange (10), the stop (5) of the threaded part (3) being formed by an end surface (5) or a radial shoulder, the threaded or tapped part (3) comprising an end area comprising external teeth (4).
A method for managing vibrations within a turbomachine rotor (1), characterized in that it consists in screwing a damping nut (8) onto a threaded or tapped part (3, 6) of the rotor (1) in such a way as to allow threads (9, 6) of the nut (8) and of the threaded or tapped part (3) to rub against one another in the event of vibration of the rotor (1), the nut (8) comprising a stop (10) capable of bearing axially on a complementary stop (5) of the threaded or tapped part (3) so that friction between the stop (10) and the complementary stop (5) occurs when the threaded part (3) is in rotation, the stop of the nut (8) being formed by a radially extending flange (10), the stop (5) of the threaded part (3) being formed by an end surface (5) or a radial shoulder, the threaded or tapped part (3) comprising an end area comprising teeth (4).
Dependencies are inferred from the claim text.