Aerostatic thrust bearing with spider web foil structure
By setting grooves and spider-web wave foils on the end surface of the static gas thrust bearing, the wave foil elastic damping consumes the energy of gas pressure fluctuation, the problem of micro-vibration of the static gas thrust bearing is solved, and the stability and service life of the bearing are improved.
Patent Information
- Application Number
- CN202411947926.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-27
- Publication Date
- 2025-04-01
AI Technical Summary
During the process of forming the gas film, high-speed gas hits the bearing end surface, which easily induces micro vibration, affecting the stability and service life of the bearing.
A static pressurized gas thrust bearing with a spider web foil structure is designed. By providing grooves and spider web wave foil on the bearing end surface, the wave foil elastic damping consumes the energy of gas pressure fluctuation, thereby suppressing micro vibration.
It effectively suppresses the micro vibration of static pressure gas bearings, improves the stability and service life of the bearings, and increases the bearing capacity.
Smart Images
Figure CN119737388A_ABST
Abstract
Description
Technical field:
[0001] The invention relates to the field of static pressure gas bearings, and in particular to a static pressure gas thrust bearing with a spider web foil structure. Background technology:
[0002] The static pressure gas thrust bearing is a non-contact bearing that uses a certain pressure gas as the working medium. The external compressed gas is input through the air inlet channel, enters the bearing gap after passing through the throttle hole, and forms a stable gas film in the bearing gap to achieve complete separation of the bearing body and the thrust plate. It has the characteristics of low friction coefficient, high motion accuracy and long service life. However, in the process of forming the gas film, the high-speed gas hitting the bearing end face will induce micro-vibration.
[0003] In response to the above problems, the present invention proposes a hydrostatic gas thrust bearing with a spider web foil structure. When the end face of the hydrostatic gas bearing is affected by the gas pressure fluctuation in the gas film, the wave foil elastic damping on the end face of the bearing can consume the energy of the gas pressure fluctuation, thereby suppressing the micro-vibration of the bearing. Summary of the invention:
[0004] The purpose of the present invention is to provide a hydrostatic gas thrust bearing with a spider web foil structure to suppress micro-vibration of the hydrostatic gas bearing.
[0005] In order to achieve the purpose of the present invention, the following technical solutions are proposed:
[0006] The present invention at least comprises: a bearing body, a bump foil assembly and a flat foil, wherein the bearing body comprises an air supply channel, a throttle hole, an air cavity and a groove, and the bump foil assembly comprises a spider web-shaped bump foil piece, a clamping piece and a support rod, and is characterized in that: the air supply channel and the throttle hole are arranged on the bearing body, the grooves are evenly distributed on the bearing body in the circumferential direction, the bump foil assembly is evenly fixed in the groove in the radial direction, the flat foil is fixed on the bearing body, and the spider web-shaped bump foil piece is fixed on the support rod through a clamping piece. At least one bump foil assembly is fixed in each of the grooves. At least three grooves are arranged in the bearing body.
[0007] Features of the present invention:
[0008] The present invention arranges grooves and spider-web-shaped corrugated foils on the end surface of the static pressure gas thrust bearing, which can increase the bearing load-bearing capacity. The spider-web-shaped corrugated foils not only have the function of consuming the micro-vibration energy generated by the bearing through the elastic damping energy of the corrugated foil itself, but also have the advantages of structural stability and strong adaptability due to their spider-web shape. Description of the drawings:
[0009] Figure 1 A three-dimensional partial cross-sectional view of the present invention is illustrated.
[0010] Figure 2 A top view of the present invention is illustrated.
[0011] Figure 3 The top view of the present invention without the flat foil is shown.
[0012] Figure 4 A bump foil assembly of the present invention is illustrated.
[0013] Figure 5 Indicated Figure 4 Sectional view of AA.
[0014] Figure 6 The clamping member of the present invention is illustrated.
[0015] Figure 7 Indicated Figure 6 Cross-sectional view of BB.
[0016] 1. Bearing body; 2. Corrugated foil assembly; 3. Flat foil; 1-1. Air supply channel; 1-2. Throttle hole; 1-3. Air cavity; 1-4. Groove; 2-1. Spider-web-shaped corrugated foil; 2-2. Clamping piece; 2-3. Support rod. Specific implementation method:
[0017] The specific working process of the present invention is described below in conjunction with the accompanying drawings.
[0018] The air supply channel 1-1 and the throttle hole 1-2 are arranged on the bearing body 1, the grooves 1-4 are evenly distributed on the bearing body 1 in the circumferential direction, the corrugated foil assembly 2 is evenly fixed in the grooves 1-4 in the radial direction, the flat foil 3 is fixed on the bearing body 1, and the spider web-shaped corrugated foil piece 2-1 is fixed on the support rod 2-3 by a clamping piece 2-2.
[0019] At least one bump foil assembly 2 is fixed in each of the grooves 1 - 4 .
[0020] At least three grooves 1-4 are arranged in the bearing body 1.
[0021] The contents described in the embodiments of this specification are merely an enumeration of the implementation forms of the inventive concept. The protection scope of the present invention should not be regarded as limited to the specific forms described in the embodiments. The protection scope of the present invention also includes equivalent technical means that can be thought of by those skilled in the art based on the inventive concept.
Claims
1. A static pressure gas thrust bearing having a spider web foil structure, comprising: A bearing body (1), a corrugated foil assembly (2) and a flat foil (3), wherein the bearing body (1) comprises an air supply channel (1-1), a throttle hole (1-2), an air cavity (1-3) and a groove (1-4), and the corrugated foil assembly (2) comprises a spider web-shaped corrugated foil sheet (2-1), a clamping piece (2-2) and a support rod (2-3), characterized in that: the air supply channel (1-1) and the throttle hole (1-2) are arranged on the bearing body (1), the groove (1-4) is evenly distributed on the bearing body (1) in the circumferential direction, the corrugated foil assembly (2) is evenly fixed in the groove (1-4) in the radial direction, the flat foil (3) is fixed on the bearing body (1), and the spider web-shaped corrugated foil sheet (2-1) is fixed on the support rod (2-3) through the clamping piece (2-2).
2. The static pressure gas thrust bearing with spider web foil structure according to claim 1, characterized in that: At least one bump foil assembly (2) is fixed in each of the grooves (1-4).
3. The static pressure gas thrust bearing with spider web foil structure according to claim 1, characterized in that: At least three grooves (1-4) are arranged in the bearing body (1).