US 11,754,002 B2
Epicyclic reduction gear for a turbomachine
Clément Paul René Niepceron, Moissy-Cramayel (FR); and Boris Pierre Marcel Morelli, Moissy-Cramayel (FR)
Assigned to SAFRAN TRANSMISSION SYSTEMS, Colombes (FR)
Appl. No. 17/626,216
Filed by SAFRAN TRANSMISSION SYSTEMS, Colombes (FR)
PCT Filed Jul. 7, 2020, PCT No. PCT/FR2020/051203
§ 371(c)(1), (2) Date Jan. 11, 2022,
PCT Pub. No. WO2021/009435, PCT Pub. Date Jan. 21, 2021.
Claims priority of application No. 1908012 (FR), filed on Jul. 16, 2019.
Prior Publication US 2022/0268215 A1, Aug. 25, 2022
Int. Cl. F16H 57/08 (2006.01); F02C 7/36 (2006.01); F02C 7/06 (2006.01)
CPC F02C 7/36 (2013.01) [F02C 7/06 (2013.01); F16H 57/082 (2013.01); F05D 2260/40311 (2013.01)] 9 Claims
OG exemplary drawing
 
1. An epicyclic reduction gear for a turbomachine, comprising:
a sun gear that is rotatable about a first axis and adapted to be rotatably driven by a turbine of the turbomachine;
a ring gear surrounding the sun gear and being rotatable about the first axis, the ring gear being adapted to rotatably drive a fan shaft;
at least one planet gear that is rotatable about a second axis, the at least one planet gear being meshed with the sun gear and the ring gear;
an immobile planet carrier, the at least one planet gear being rotatably guided about the second axis with respect to a bearing of the planet carrier;
an item of equipment comprising a rotor,
wherein the item of equipment is fitted to the bearing of the planet carrier and the rotor of the item of equipment is rotatably driven by the at least one planet gear via a gear train.