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Tieless bracing and method for supporting end turns of a dynamoelectric machine

  • US 3,924,149 A
  • Filed: 08/01/1974
  • Issued: 12/02/1975
  • Est. Priority Date: 08/01/1974
  • Status: Expired due to Term
First Claim
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1. Tieless bracing means for winding end turns of a dynamoelectric machine comprising a radially expandable and contractable split metal annulus, adjustable take-up means mounted on said annulus, said take-up means being manually adjustable to move the ends of said annulus toward one another, an elongated tongue member mounted on the inner side of one end of the split annulus and disposed to engage and underlie the inner side of the other end of the annulus when said ends are moved within one inch of one another by the take-up means, a ring of compressible felt positioned in engagement with the inner side of said annulus around substantially the entire circumference thereof, in combination with a dynamoelectric machine frame having a stator mounted therein with insulated winding end turns extending beyond the stator ends, and a plurality of axially adjustable annulus positioning means mounted on said frame at arcuately spaced-apart points radially outward from the end turns, each of said annulus positioning means comprising:

  • a. a threaded stud mounted on the frame with its longitudinal axis generally parallel to the stator axis, b. a pair of arms mounted in movable relation to one another on each stud adjacent the outer end thereof, said arms being operable to hold the annulus in a variety of pre-determined positions, c. clamping means mounted on each stud, said clamping means being operable to move the arms in either direction along the stud thereby to locate the annulus in a desired one of said pre-determined positions with respect to the end turns, said clamping means being further operable to force the arms associated therewith together to secure the annulus held between them in said desired position while allowing the annulus to move radially relative to the elongated studs, and dielectric means mounted on all but one of said threaded studs to insulate them respectively from the clamping means associated therewith, said one of the studs that does not mount one of the dielectric means being operable as an electrical grounding circuit between the annulus and the machine frame.

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