IMPROVED DEVICE FOR FASTENING ENGINE SHAFT ON BEARING SUPPORT Russian patent published in 2007 - IPC F02C7/36 F16D1/06 

FIELD: mechanical engineering.

SUBSTANCE: invention is designed for turbomachines. Proposed device for fastening machine shaft on bearing supports has withdrawal nut, locknut and nut lock. Withdrawal nut has second connection means, stop with front and rear surfaces and thread designed for engaging with first threaded section of shaft. Locknut has stop with front surface, first connection means and thread for engagement with second threaded section of bearing support for locking shaft relative to bearing support in chosen position. First and second threaded sections are opposite ones. Front surface of withdrawal nut stop is designed for resting on rear surface of stop of bearing support for determining chosen position. Rear surface of withdrawal nut stop is designed for supporting front surface of locknut stop when locknut is in interlocking position. Stop of nut has third and fourth connection means made for engagement, respectively, with first and second connection means. Stop of nut provides connection of withdrawal nut and locknut at rotation after setting in interlocking position determining chosen position.

EFFECT: simplified servicing and repair of engine, precluding getting of fasteners inside engine.

18 cl, 7 dwg