US 11,808,160 B2
Sub-assembly for mounting a guide bearing of a compressor shaft
Romain Nicolas Lagarde, Moissy-Cramayel (FR); Marie-Charline Stéphanie Charbonnier, Moissy-Cramayel (FR); Jean-Marc Claude Perrollaz, Moissy-Cramayel (FR); and Lilian Yann Dumas, Moissy-Cramayel (FR)
Assigned to SAFRAN AIRCRAFT ENGINES, Paris (FR)
Appl. No. 17/435,428
Filed by SAFRAN AIRCRAFT ENGINES, Paris (FR)
PCT Filed Mar. 2, 2020, PCT No. PCT/HR2020/050409
§ 371(c)(1), (2) Date Sep. 1, 2021,
PCT Pub. No. WO2020/183089, PCT Pub. Date Sep. 17, 2020.
Claims priority of application No. 1902408 (FR), filed on Mar. 8, 2019.
Prior Publication US 2022/0127973 A1, Apr. 28, 2022
Int. Cl. F01D 25/16 (2006.01)
CPC F01D 25/162 (2013.01) [F05D 2220/32 (2013.01); F05D 2230/60 (2013.01); F05D 2230/70 (2013.01); F05D 2240/54 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A sub-assembly of a turbomachine including a shaft of the turbomachine, the shaft defining a main axis, a bearing for guiding an axial end of said shaft, the sub-assembly including an axisymmetric sleeve mounted radially between the end of the shaft and an inner ring of the guide bearing, a nut which is linked to the end of the shaft at a first thread by screwing and which axially tightens the axisymmetric sleeve against a shoulder of the end of the shaft and a member for blocking the nut in rotation relative to the end of the shaft,
wherein the member for blocking the nut includes a first section carrying a plurality of flexible legs where one end of each leg cooperates with an annular wall radially internal to the end of the shaft and includes a second section which cooperates with the nut, and
wherein the second section of the blocking member is linked to the nut at a second thread by screwing and the characteristics of the second thread between the blocking member and the nut are different from the characteristics of the first thread between the nut and the end of the shaft.