Device for limiting shaft whirl
US6194801A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 15, 1999 |
| Grant date | Feb 27, 2001 |
| Priority date | — |
| Expiry date | Oct 15, 2019 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16C39/02
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An arrangement for limiting the whirl speed of a shaft after failure of a magnetic bearing supporting the shaft. The arrangement includes a surface extending essentially radially from the shaft axis and a machine element is provided with a projecting element extending from the machine element in a direction towards the surface. The surface is provided with a circular element that is concentric with the axis of the shaft. The arrangement also includes a disk-like element provided with an outer perimeter surface, a hole and an inner perimeter surface. One of the perimeter surfaces is designed so that it provides a varying distance along the circumferential direction with respect to the rotational center of the disk-like element. The element is arranged between the shaft and the circular element. The circular element and the projecting element are positioned in a common plane perpendicular to the shaft so that the circular element and the projecting element overlap one another. The disklike element operates as a whirl speed limiting mechanism causing a contribution to the whirl velocity at impact between any of the projecting element, the disk-like element, the circular element and th…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.