Method for attaching a bearing supporting a rotor on a turbomachine
View Patent ↗A method for attaching a bearing on a turbomachine including a stator and a rotor, the bearing including: a first portion attached on the stator of the turbomachine by a plurality of screws and nuts, a second portion attached on the rotor, rotationally movable in one given rotation direction, and a rolling bearing provided between the first and second portions of the bearing is disclosed. The method provides using screws having a screwing rotation direction contrary to the rotation direction of the rotor.
1. A method for attaching a bearing on a turbomachine comprising a stator and a rotor, the bearing including:
a first portion attached on the stator of the turbomachine by a plurality of screws and nuts,
a second portion attached on the rotor of the turbomachine, rotationally movable in one given rotation direction,
and a rolling bearing provided between the first and second portions of the bearing,
wherein said method includes using the plurality of screws each having a screwing rotation direction contrary to the rotation direction of the rotor.
2. The method for attaching a bearing on a turbomachine according to claim 1 , wherein, when the rotor rotation direction goes clockwise as seen from behind the turbomachine, a head of each screw is located downstream and the corresponding nut is located upstream, and the screws used are left-hand screws.
3. The method for attaching a bearing on a turbomachine according to claim 1 , wherein, when the rotor rotation direction goes clockwise as seen from behind the turbomachine, a head of each screw is located upstream and the corresponding nut is located downstream, and the screws used are right-hand screws.
4. The method for attaching a bearing on a turbomachine according to claim 1 , wherein, when the rotor rotation direction goes counter clockwise as seen from behind the turbomachine, a head of each screw is located downstream and the corresponding nut is located upstream, and the screws used are right-hand screws.
5. The method for attaching a bearing on a turbomachine according to claim 1 , wherein, when the rotor rotation direction goes counter clockwise as seen from behind the turbomachine, a head of each screw is located upstream and the corresponding nut is located downstream, and the screws used are left-hand screws.
6. The method for attaching a bearing on a turbomachine according to any of the preceding claims, wherein the first portion of the bearing comprises a first flange and the stator of the turbomachine comprises a second flange, the first and second flanges being clamped against each other and having respective circular ports with screws therethrough.