FIELD: electrical and electromechanical engineering; rotors of large electrical machines such as turboalternators.
SUBSTANCE: proposed electrical machine rotor has heavy wound core whose winding coils are secured in end portions in radial direction by means of heavy metal banding rings fitted with one end on butt-end portions of core and with other end, on cylindrical surfaces of Z-section alignment rings; inner surface of alignment rings are joined with end portions of rotor shaft, two rows of slits being made in vicinity of mentioned rotor-shaft or banding-rind junction surfaces of each alignment ring uniformly and tangentially disposed over circumference of the latter in relatively staggered manner. One row of mentioned slits can be made in mentioned zones within alignment ring and other row, on rotor shaft surface jointed to alignment ring, for instance in the form of cooling ducts.
EFFECT: enhanced reliability due to additional reduction of alternate stress in zone where banding rings are fitted on rotor core.
1 cl, 2 dwg
