Patent ID: 9689261
Date: 2017-06-27
CPC Classifications: F01D

Claim:
1. A stacked wheel assembly for a rotor of a rotary machine comprising: a plurality of stacked wheels for rotation about a common axis and forming a portion of the rotor; a tie bolt passing through aligned bolt holes of the plurality of stacked wheels for retaining the plurality of stacked wheels in axially stacked relation, the tie bolt extending out of a forward end of a forward wheel of the plurality of stacked wheels and out of an aft end of an aft wheel of the plurality of stacked wheels; a rotor component disposed adjacent the aft end of the aft wheel, the rotor component comprising at least one slot that extends around a forward face of the rotor component; and at least one nut mounted within a forward face of the rotor component, the at least one nut configured to be in threaded engagement with the tie bolt to exert a clamping force on the plurality of stacked wheels, wherein the at least one nut includes a dovetail region for engaging and being fully disposed in the at least one slot of the rotor component, wherein the at least one slot comprises a plurality of radially extending slots, each of the plurality of radially extending slots configured to receive one nut of the at least one nut in a radial direction.