Rotating assembly construction for high speed induction motor
US6177750A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 14, 1998 |
| Grant date | Jan 23, 2001 |
| Priority date | — |
| Expiry date | Jul 14, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K17/168
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A shaft or shafts are connected to a rotor core of a dynamoelectric machine without the need for a central hole in the laminations of the core. The shaft is connected to the core by attaching the shaft to a rotor end plate (or forming the shaft and the end plate as a single unit) and connecting the end plate to the core at a distance away from the axis of the core. The rotor may have similar end plates at both ends, the end plates attached to each other and to the core by through studs or bolts that pass through holes in the laminations. The holes and the studs or bolts are evenly circumferentially spaced at a distance from the axis. The through studs or bolts are secured at either end, clamping the end plates with the rotor core between them. The rotor end plate provides support to the rotor end ring that forms part of the squirrel cage of the rotor core. The end plate includes a lip or other portion which restrains movement of the end ring in lateral and/or axial direction(s) as the rotor rotates. For example, the rotor may have a lip which is machined to be at or nearly in contact with the end ring when the rotor is at rest.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.