SHORT-CIRCUITED ROTOR WITH SQUIRREL CAGE OF ASYNCHRONOUS MACHINE Russian patent published in 2010 - IPC H02K17/16 H02K17/12 H02K3/04 

FIELD: electric engineering.

SUBSTANCE: proposed short-circuited rotor with squirrel cage comprises shaft (1) and laminated core of sheet steel (2), in laminated core of sheet steel (2) there are rotor winding (3) rods located, which at both ends of laminated core of sheet steel (2) are pulled through openings (10) of each end plate (9) and closed by short-circuited ring (4), which, being electrically conducting, connects ends of rotor winding (3) rods on one side of short-circuited rotor to squirrel cage, besides each end plate (9) comprises circumferential ledge, which at least partially covers short-circuiting ring (4) with geometric closure at its outer side, besides each end plate (9) comprises part of rotor winding (3) rod and part of short-circuiting ring (4). At the same time, according to the present invention, end plates (9) are arranged as massive and are made of stronger material compared to rods of rotor winding (3) and short-circuiting rings (4), besides rods of rotor winding (3) have bulge at their ends with increased cross section of rod (7), moreover, at least part of rotor winding (3) rods bulge lies in openings (10) of end plates (9), besides transition between bulge and short-circuiting ring (4) is arranged in the form of rounding with transitional radius (8).

EFFECT: improved reliability of short-circuited rotor and asynchronous machine as a whole by elimination of possibility of breakage in transitional area of rotor winding rods and short-circuiting rings, provision of reliable retention of short-circuiting rings at high speeds of rotation and centrifugal forces.

9 cl, 13 dwg