Snecma

Snecma Moteurs

Didier Escure

Bruno Dambrine

Caroline Aumont

Jacques René Bart

Stéphane Rousselin

Daniel Bernard Dao

Erick Jacques Boston

Jean-François Fromentin

Jean-Yves Guedou

Gérard Miraucourt

Francis Soniak

Jacques Audet

Marie-France Bourgeois

Ludovic Molliex

Sandrine Chatel

The invention relates to an assembly between a compressor shaft trunnion and a bevel gear for driving an accessory gearbox of a turbomachine. The assembly comprises a bevel gear, a compressor shaft trunnion arranged coaxially inside the bevel gear, torque transmission means between the compressor shaft trunnion and the bevel gear, a lock nut for preventing the bevel gear from moving axially on the compressor shaft trunnion, the lock nut being suitable for being screwed onto the bevel gear and including a shoulder projecting radially outwards and suitable for coming into axial abutment firstly upstream against a stop nut screwed onto an upstream end of the compressor shaft trunnion, and secondly downstream against a bearing surface of the compressor shaft trunnion, and an anti-rotation pin for preventing the lock nut from rotating.

Assembly between a compressor shaft trunnion and a bevel gear for driving an accessory gearbox of a turbomachine

A first rotor piece includes a first ring provided with a succession of holes and notches. An assembly is formed by a second rotor piece fixed to a third rotor piece. The second piece ends downstream in a second ring including holes. The third piece ends upstream in a third ring including holes. The second and third rings are arranged against each other with their holes in alignment, and are fixed together by first fasteners. The first ring is arranged upstream of and against the assembly so that the notches fit around the first fasteners so that some of the holes of the first ring are aligned with holes of the assembly, with second fasteners fixing the first ring to the assembly.

Connection between bladed discs on the rotor line of a compressor

Growing community of inventors

Nandy, France

Didier Escure