Patent ID: 8794922

Claim:
An assembly between a compressor shaft trunnion and a bevel gear for driving an accessory gearbox of a turbomachine, the assembly comprising: a bevel gear centered on a longitudinal axis of the turbomachine; a compressor shaft trunnion disposed 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 into the bevel gear on its inside and including a shoulder that projects radially outwards and that is 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 said compressor shaft trunnion; and an anti-rotation pin mounted inside the compressor shaft trunnion to prevent the lock nut from rotating.