US 11,929,642 B2
Rapid set donut wedge
Michael R. Vindler, Pittsburgh, PA (US); and Michael A. Hall, Greensburg, PA (US)
Assigned to SIEMENS ENERGY, INC., Orlando, FL (US)
Appl. No. 17/433,661
Filed by Siemens Energy, Inc., Orlando, FL (US)
PCT Filed May 3, 2019, PCT No. PCT/US2019/030538
§ 371(c)(1), (2) Date Aug. 25, 2021,
PCT Pub. No. WO2020/226604, PCT Pub. Date Nov. 12, 2020.
Prior Publication US 2022/0103025 A1, Mar. 31, 2022
Int. Cl. H02K 1/16 (2006.01); H02K 1/18 (2006.01); H02K 15/02 (2006.01)
CPC H02K 1/185 (2013.01) [H02K 15/024 (2013.01); H02K 1/16 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A generator, comprising:
a stator frame including a bore and a plurality of circumferentially disposed building bolts mounted around and extending within the bore;
a plurality of stator donuts defining a stator core, each donut including a plurality of circumferentially disposed notches around an outer perimeter of the donut that align with notches in other stator donuts and form slots extending the length of the stator core, each notch including opposing side walls, each side wall including a groove;
a plurality of wedge assemblies for mounting the stator donuts to the plurality of building bolts, each wedge assembly comprising:
a set of opposing wedges, the set positioned within a respective notch to create a locking force between a building bolt of the plurality of building bolts and the stator core, and
each of the opposing wedges comprises a tensioning bolt,
wherein the tensioning bolt 120 sets the opposing wedges to a position creating a locking force between the stator core and the building bolt,
wherein the set of opposing wedges comprises:
an upper wedge including a first surface configured to be positioned to engage with the groove and a first opposing surface including a threaded portion, and
a lower wedge including a second surface that conforms to the building bolt and a second opposing surface that mates to the first opposing surface.