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Foil Radial Gas Dynamic Bearings and Motors

A gas dynamic pressure bearing and foil technology, applied in sliding contact bearings, rotating bearings, bearings, etc., can solve the problem of reducing bearing capacity and other issues

Active Publication Date: 2022-04-12
BEIJING WENLI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In practical applications, if certain axial and radial disturbances occur during the operation of the motor rotor, the wave-shaped elastic region of the corrugated foil will be shifted axially and circumferentially, reducing the wave-shaped elastic region and Overlap area of ​​the support area in the top foil, reducing the load carrying capacity of the bearing

Method used

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  • Foil Radial Gas Dynamic Bearings and Motors
  • Foil Radial Gas Dynamic Bearings and Motors
  • Foil Radial Gas Dynamic Bearings and Motors

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] see Figure 2-Figure 5 , in the foil radial aerodynamic pressure bearing provided by the embodiment of the present invention, the first end and the second end of the top foil 104 are installed on the inner wall of the shaft sleeve 101 respectively; the first end and the second end of the stop foil 103 The ends are installed on the inner wall of the shaft sleeve 101 respectively; the first end of the corrugated foil 102 is installed on the inner wall of the shaft sleeve 101 , and the second end is a free end. The above-mentioned first and second ends are two ends of each foil along the circumferential direction of the sleeve 101 .

[0040]Specifically, in the above foil radial aerodynamic pressure bearing, slots are provided on the inner wall of the sleeve 101, and the first ends of the top foil 104, the limit foil 103 and the wave foil 102 are all inserted into a slot , the second ends of the top foil 104 and the limit foil 103 are both inserted into the other slot.

...

Embodiment 2

[0043] see Figure 6-Figure 9 , in the foil radial aerodynamic pressure bearing provided by the embodiment of the present invention, the first end and the second end of the top foil 104 are installed on the inner wall of the shaft sleeve 101 respectively; the first end and the second end of the stop foil 103 The first end and the second end of the wave foil 102 are respectively installed on the inner wall of the shaft sleeve 101 . The above-mentioned first and second ends are two ends of each foil along the circumferential direction of the sleeve 101 .

[0044] Specifically, in the foil radial aerodynamic pressure bearing, the inner wall of the sleeve 101 is provided with a first slot and a second slot that are plugged and fitted with the bearing foil group; the first slot is L-shaped, including mutual Connected radial part and axial part, the first end of the top foil 104, the limit foil 103 and the wave foil 102 are inserted into the first slot from the radial part and inse...

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Abstract

The invention discloses a foil radial gas dynamic pressure bearing, which comprises a shaft sleeve and a bearing foil set installed on the inner wall of the sleeve, and the bearing foil set includes a top foil, a limit foil and a corrugated foil which are sequentially stacked and arranged. The top foil is used to contact the rotor of the motor; the corrugated foil is sandwiched between the limiting foil and the inner wall of the bushing; the position of the limiting foil corresponding to the wave-shaped elastic part of the corrugated foil is provided with through holes; The wave-shaped elastic part is accommodated in the through hole and is in contact with the top foil. In the foil radial gas dynamic pressure bearing, the limiting foil is provided with a through hole, and the wave-shaped elastic part of the corrugated foil is accommodated in the through hole, and the through hole limits the movement of the wave-shaped elastic part in the axial and circumferential directions. Offset, increase the overlapping area of ​​the wave-shaped elastic part in the wave foil and the support area in the top foil when the motor rotor is disturbed in the axial and radial directions after operation, so as to ensure that the radial gas dynamic pressure bearing of the foil has a high carrying capacity. The present invention also provides a motor using the foil radial gas dynamic pressure bearing.

Description

technical field [0001] The invention relates to the technical field of high-speed rotating mechanical equipment, more specifically, to a foil radial gas dynamic pressure bearing, and to a motor. Background technique [0002] Foil radial gas dynamic pressure bearing is a self-acting gas dynamic pressure bearing supported by a flexible surface. It usually uses the surrounding ambient gas as a lubricant and belongs to a branch of gas dynamic pressure lubrication technology. [0003] The foil radial aerodynamic bearing includes a bearing sleeve and a plurality of foils arranged on the inner wall of the bearing sleeve, wherein one end of the corrugated foil is limited at the inner wall of the bearing sleeve in the axial and circumferential directions, and the other end is a free end . In practical applications, if certain axial and radial disturbances occur during the operation of the motor rotor, the wave-shaped elastic region of the corrugated foil will be shifted axially and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16C17/02F16C33/02F16C33/04
CPCF16C17/024F16C33/02F16C33/04
Inventor 华青松邱瑞林刘亚波仙存妮魏建新
Owner BEIJING WENLI TECH CO LTD