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Damped bearing of a rotor shaft

A rotor shaft and bearing technology, applied in the field of rotor shaft devices, can solve problems such as reducing instability

Active Publication Date: 2016-08-24
SIEMENS AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this is often not sufficient to allow the rotor to run at its natural frequency and reduce instability in any speed range

Method used

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  • Damped bearing of a rotor shaft
  • Damped bearing of a rotor shaft
  • Damped bearing of a rotor shaft

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0066] figure 1 A first exemplary embodiment of the device according to the invention for damping the mounting of a rotor shaft of an electrical machine is shown.

[0067] The device is arranged between a housing 3 of the electric machine and a rotor shaft 1 of the electric machine and has a bearing unit 2 and a damping element 4 . The damping element 4 here has a mesh 5 made of metal wires. According to the first exemplary embodiment, the damping part 4 is arranged radially inwardly than the bearing part 2 . The bearing unit 2 can be designed, for example, as a rolling bearing or as a sliding bearing.

[0068] figure 2 A second embodiment of the device according to the invention is shown.

[0069] Such as figure 1 The same reference numerals as in the same describe the same objects herein. In a modification of the first exemplary embodiment, the device for the damping mounting is designed in such a way that the bearing part 2 is arranged radially further inward than ...

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PUM

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Abstract

The invention relates to an arrangement for the damped bearing of a rotor shaft (1) of an electric machine. The invention also relates to an electric machine comprising a rotor shaft (1) and at least one such arrangement. The invention further relates to a method for the damped bearing of a rotor shaft (1) of such an electric machine. In order to provide an alternative for the damped bearing of a rotor shaft (1), it is proposed that the arrangement has a bearing unit (2), which can be arranged between the rotor shaft (1) and a housing (3) of the electric machine, and a damping element (4), which can be arranged between the bearing unit (2) and the rotor shaft (1) or between the bearing unit (2) and the housing (3), wherein the damping element (4) comprises a mesh of metal wire (5).

Description

technical field [0001] The invention relates to a device for vibration-damping mounting of a rotor shaft of an electrical machine. Furthermore, the invention relates to an electric machine having a rotor shaft and at least one such device. Furthermore, the invention relates to a method for damping the mounting of a rotor shaft of an electric machine of this type. Background technique [0002] Devices of this type and methods of this type are used, for example, in electric motors or generators. If any rotor is mounted in rotation, depending on the type of mounting, a natural frequency with an associated characteristic form results. The bearing of the rotor can be designed, for example, as a hydrodynamic sliding bearing, a hydrostatic sliding bearing, a roller bearing, active and passive magnetic bearings or air bearings. [0003] A distinction is made here between subcritical and supercritical rotors. If the first natural frequency of the system is above its operating rev...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16C27/04H02K5/24H02K7/16
CPCF16C27/04H02K5/161H02K5/24H02K2213/09H02K11/20F16C2380/26F16C27/00F16C27/02H02P29/50H02K5/16H02K7/08
Inventor 克里斯蒂安·鲍尔
Owner SIEMENS AG