US 12,460,582 B2
Assembly for a turbine engine
Patrick Jean Laurent Sultana, Moissy-Cramayel (FR); Stéphane Pierre Guillaume Blanchard, Moissy-Cramayel (FR); and Antoine Hervé Dos Santos, Moissy-Cramayel (FR)
Assigned to SAFRAN AIRCRAFT ENGINES, Paris (FR)
Appl. No. 17/763,095
Filed by SAFRAN AIRCRAFT ENGINES, Paris (FR)
PCT Filed Sep. 21, 2020, PCT No. PCT/FR2020/051632
§ 371(c)(1), (2) Date Mar. 23, 2022,
PCT Pub. No. WO2021/058898, PCT Pub. Date Apr. 1, 2021.
Claims priority of application No. 1910480 (FR), filed on Sep. 23, 2019.
Prior Publication US 2022/0389874 A1, Dec. 8, 2022
Int. Cl. F02C 7/36 (2006.01); F01D 5/02 (2006.01); F01D 5/10 (2006.01); F01D 25/04 (2006.01)
CPC F02C 7/36 (2013.01) [F01D 5/026 (2013.01); F01D 5/10 (2013.01); F01D 25/04 (2013.01); F05D 2230/644 (2013.01); F05D 2240/61 (2013.01); F05D 2250/231 (2013.01); F05D 2250/232 (2013.01); F05D 2260/31 (2013.01); F05D 2260/36 (2013.01); F05D 2260/96 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A turbomachine (1) comprising, from upstream to downstream with respect to the direction of gas flow within the turbomachine (1);
a fan (2);
a high-pressure compressor (3);
a low-pressure compressor (4);
a combustion chamber;
a high-pressure turbine (5);
a low-pressure turbine (6);
an assembly extending about an axis (X), comprising:
a radially inner shaft (8) rotatably coupled to the low-pressure turbine (6);
a radially outer shaft (7) rotatably coupled to the fan (2), said shafts (7, 8) being coaxial and extending along the axis (X);
means (11, 15) for coupling the inner and outer shafts (7, 8) in terms of rotation;
means (22) for axially holding the inner shaft (8) with respect to the outer shaft (7); and
means for centering the inner shaft (7) with respect to the outer shaft (8);
wherein the means of centering comprise a frustoconical radial centering and axial positioning wedge (14) inserted between a frustoconical centering surface (13) of the inner shaft (7) and a complementary frustoconical centering surface (10) of the outer shaft (8),
wherein said frustoconical radial centering and axial positioning wedge (14) is separate from the inner shaft and outer shaft and comprises two parallel frustoconical surfaces respectively in contact with the complementary frustoconical centering surface (13) of the inner shaft (7) and in contact with the complementary frustoconical centering surface (10) of the outer shaft (8),
wherein the axial positioning wedge (14) has at least one mainly axially extending slot (17), and
wherein the at least one mainly axially extending slot (17) comprises:
a first end (18) opening axially at the level of a downstream axial end (19) of the axial positioning wedge (14); and
a second end (20) situated axially between the downstream axial end (19) and a second end (21) of the axial positioning wedge (14).