A Radial Elastic Air Bearing

An air bearing and elastic technology, applied in the directions of bearings, shafts and bearings, mechanical equipment, etc., can solve the problem that the damping characteristics of bearings need to be further improved, and achieve the effects of improving damping and stiffness characteristics, improving bearing capacity, and improving poor reliability.

Active Publication Date: 2017-02-15
HUNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] After decades of development, air bearings have greatly improved their load-carrying and vibration-damping capabilities, but the new air bearings only simply change the parameters of the wave foil on the basis of the predecessors, and fail to improve the performance of the bearings. Substantial improvements have been made in the structure, and the damping characteristics of the bearing need to be further improved

Method used

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  • A Radial Elastic Air Bearing
  • A Radial Elastic Air Bearing
  • A Radial Elastic Air Bearing

Examples

Experimental program
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Effect test

Embodiment 1

[0027] Such as figure 1 As shown, a radial elastic air bearing includes: a bearing body 2, a wire mesh ring 1 and a flexible tilting pad structure, the bearing body 2 and the wire mesh ring 1 are arranged coaxially, and are composed of two identical specifications The wire mesh ring 1 is symmetrically installed in the annular grooves at both ends of the bearing body 2. The flexible tilting pad structure is mainly composed of a bearing pad 3 and a flexible supporting structure 4. The bearing pad 3 is arranged inside the bearing body 2. The bearing pad 3 is connected with the bearing body 2 through the flexible supporting structure 4. When the bearing pad 3 is subjected to radial force, the bearing pad 3 will press the flexible supporting structure 4, thereby causing the bearing pad 3 to move radially. The inner surface of the bearing pad 3 forms a bearing and a rotating shaft mating surface. Inside the bearing, the elastic support structure is composed of a flexible tilting pa...

Embodiment 2

[0032] Figure 5 Shown is a schematic structural view of another bearing body provided in the second embodiment of the present invention.

[0033] The working principle of the bearing in this embodiment is generally the same as that in Embodiment 1, the difference is that this embodiment is a gas-dynamic-static-pressure hybrid bearing. The aerodynamic pressure bearing in the first embodiment cannot form a sufficient gas film separating the two friction surfaces due to the low speed during the start-up and stop-down process, and wear is prone to occur. The gas dynamic and static pressure hybrid bearing is used in the second embodiment, which not only avoids the wear of the gas dynamic pressure bearing in the process of starting and stopping, but also has extremely high rotation accuracy and high load carrying capacity at any speed.

[0034] Figure 6 Shown is a partial cross-sectional view of the bearing body in the gas dynamic and static pressure bearing. The difference from...

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Abstract

The invention discloses an elastic radial air bearing, which comprises a bearing body, metal wire mesh rings and a flexible tilting bush structure, wherein the bearing body and the metal wire mesh rings are coaxially arranged, the two metal wire mesh rings with the same specification are symmetrically arranged in circular grooves in two ends of the bearing body, the flexible tilting bush structure mainly comprises a bearing bush and a flexible supporting structure, the bearing bush is arranged on the inner side of the bearing body and is connected with the bearing body through the flexible supporting structure, and a mating surface of the bearing and a rotating shaft is formed in the inner surface of the bearing bush. By adopting the parallel distribution of the flexible tilting bush structure and the metal wire mesh rings, the bearing has the characteristics of high rigidity and high damping, the bearing capability of the bearing is enhanced, the vibration impact of the bearing is reduced, and the reliability and running stability of the bearing can be improved.

Description

technical field [0001] The invention relates to the technical field of air bearings, in particular to a radial elastic air bearing. Background technique [0002] The air bearing is a self-acting elastically supported air bearing with the air in the surrounding environment as the lubricant. Air bearings greatly reduce the friction between the drive shaft and bearings by forming a thin film of air between the drive shaft and the bearings. Compared with ordinary rotor bearings, it has a series of advantages such as high speed, good precision, high reliability, no oil lubrication, small friction loss, and can work in high temperature environment. [0003] In the field of air bearings, the elastic support structure plays the role of support and vibration reduction. The elastic support structure is adopted, and the working air film gap of different thickness can be established at any time according to the different loads. In the air bearing, the elastic support structure should ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16C32/06
Inventor 冯凯霍彦伟刘万辉程苗苗
Owner HUNAN UNIV
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