| 摘要 |
FIELD: electric engineering and electro-mechanical industry, in particular - rotors of large electric machines such as turbo generators. ^ SUBSTANCE: in accordance to invention, elastic elements in localizing rings are made with rigidity Z, providing their combined effect in radial direction onto tread rings and end parts of rotor shaft, equivalent to effect of mass of tread rings and under-tread content (Pequiv.) onto localizing rings during contraction (extension) of elastic elements for value, equal to difference between static flexures nu1 st. and nu2 st. of rotor shaft at sections where planting zones of tread ring are located, determined from expression: (Deltanuel.elem.)=( nu2 st. - nu1 st.), while values of nu1 st. and nu2 st. are determined on condition of effect of core mass onto middle, massive section of rotor, and on condition of effect of mass of tread rings and under-tread content onto end sections of core and end sections of rotor in the plane of localizing (stopping) rings, while rigidity of elastic elements in localizing rings required to provide for constant coaxial position of planting surface of tread rings and core is determined from expression where n and &phis; are, respectively, number of elastic elements and their effect direction angle relatively to radial rotor axis. Also possible are several variants of creation of equally effective structures of elastic elements, built with consideration of basic statement about selection of rigidity of elastic elements, such as ones built into localizing or stopping rings of tread units of electric machine rotors, making it possible to use positive sides of structures of one-position and two-position tread units. ^ EFFECT: increased reliability of rotor of implicit-pole electric machine due to maximal decrease up to full removal of sign-alternating voltages in zone of planting of tread rings onto rotor core, caused by mass of tread unit and rotor flexing. ^ 6 cl, 5 dwg |
