CN221221134U - Top foil and bottom foil integrated dynamic pressure gas thrust bearing - Google Patents
Top foil and bottom foil integrated dynamic pressure gas thrust bearing Download PDFInfo
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- CN221221134U CN221221134U CN202322655750.XU CN202322655750U CN221221134U CN 221221134 U CN221221134 U CN 221221134U CN 202322655750 U CN202322655750 U CN 202322655750U CN 221221134 U CN221221134 U CN 221221134U
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- foil
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- foils
- thrust bearing
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- 239000011888 foil Substances 0.000 title claims abstract description 139
- 238000009423 ventilation Methods 0.000 claims description 8
- 239000011248 coating agent Substances 0.000 claims description 7
- 238000000576 coating method Methods 0.000 claims description 7
- 238000003466 welding Methods 0.000 abstract description 4
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 230000000630 rising effect Effects 0.000 abstract description 2
- 238000001816 cooling Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
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Abstract
The utility model discloses a top foil and bottom foil integrated dynamic pressure gas thrust bearing, and relates to the technical field of air bearings. The service life of the bearing can be prolonged better, the load capacity is improved better, and the temperature rising speed is slower. The technical scheme of the utility model is as follows: the thrust back plate comprises a plurality of integrated foils fixedly mounted on the thrust back plate, wherein the integrated foils are sequentially connected end to form a ring shape, an overlapping area is formed between two adjacent integrated foils, wave foils are arranged in the overlapping area, and the wave foils are fixedly connected with one integrated foil and are contacted with the other integrated foil. The utility model cancels the traditional welding connection mode between the top foil and the bearing back plate, thereby obviously prolonging the service life of the bearing.
Description
Technical Field
The utility model relates to the technical field of air bearings, in particular to a dynamic pressure gas thrust bearing.
Background
The foil dynamic pressure gas bearing is a high-speed bearing without oil lubrication, gas is sucked from a tiny wedge-shaped surface formed by a rotating object and the surface of the bearing, and an air film with certain pressure is formed so as to provide a supporting load, so that the foil dynamic pressure gas bearing is a novel bearing with potential and is applied to the fields of air suspension centrifugal blowers, small turbine engines, aircraft air circulators and the like. Has the advantages of simple and compact structure, high and low temperature resistance, high bearing capacity, strong shock resistance and low friction power consumption, high rotating speed, long service life, low cost, cleanness, no pollution and the like.
In the foil dynamic pressure gas bearing, the foil dynamic pressure gas thrust bearing is generally composed of a wave foil, a top foil and a bearing back plate, the wave foil is welded on the bearing back plate, and the top foil is covered on the wave foil and welded on the bearing back plate. For example, as shown in a Chinese patent publication of "an elastic foil dynamic pressure gas thrust bearing" and application number "201821292290.1" on 2 nd 2019, in the process of low-speed running of an actual rotary machine, a certain friction force exists between a thrust disc and a top foil of the foil dynamic pressure gas thrust bearing, the friction force affects the friction force, a welding point between the top foil and a back plate of the bearing has loss in the running environment, a certain life hidden trouble exists, and a part of performances are also affected.
Disclosure of utility model
Aiming at the problems, the utility model provides the dynamic pressure gas thrust bearing with the integrated top foil and bottom foil, which can better prolong the service life of the bearing, better improve the load capacity and have slower temperature rising speed.
The technical scheme of the utility model is as follows: the thrust back plate comprises a plurality of integrated foils 1 fixedly mounted on the thrust back plate 301, wherein the integrated foils 1 are sequentially connected end to form a ring shape, an overlapping area is formed between two adjacent integrated foils 1, a wave foil 2 is arranged in the overlapping area, and the wave foil 2 is fixedly connected with one integrated foil 1 and is contacted with the other integrated foil 1. Therefore, the integrated foil 1 is used as the top foil of one bump foil 2 and the bottom foil of the other bump foil 2, so that the traditional welding connection mode between the top foil and the back plate of the bearing is canceled, and the service life of the bearing is remarkably prolonged.
Further, the integrated foil 1 has a fan shape.
Further, the integrated foil 1 is sequentially divided into a coating section 1.1, a ventilation section 1.2 and a bump foil fixing section 1.4, and the coating section 1.1 of the integrated foil 1 is stacked above the bump foil fixing section 1.4 of another integrated foil 1, so that an overlapping area for accommodating the bump foil 2 is formed between the two.
Further, a bump foil positioning groove 1.3 is formed between the ventilation section 1.2 and the bump foil fixing section 1.4.
Further, the bump foil 2 is sequentially divided into a fixed section 2.1, a waveform section 2.2 and a straight section 2.3, wherein the fixed section 2.1 is a fixed area of the bump foil 2 and the bump foil fixed section 1.4; the waveform sections 2.2 and the straight sections 2.3 are distributed at intervals; the straight section 2.3 is in contact with the unitary foil 1.
Further, the fixing area of the bump foil 2 is located outside the overlapping area.
Further, the outer or inner side of the integrated foil is provided with a mounting area for connecting to the thrust back plate, thereby fixing the thrust bearing to the thrust back plate 301.
The utility model cancels the traditional welding connection mode between the top foil and the bearing back plate, thereby obviously prolonging the service life of the bearing.
Drawings
Fig. 1 is a schematic structural view of an integrated foil dynamic pressure gas thrust bearing.
Fig. 2 is a schematic structural view of a bump foil.
Fig. 3 is a schematic structural view of another integrated foil dynamic pressure gas thrust bearing.
Fig. 4 is a schematic structural view of another integrated foil.
Fig. 5 is a schematic view of another one-piece foil.
Fig. 6 is a schematic view of a dynamic pressure gas thrust bearing installation structure.
Fig. 7 is a partial cross-sectional view of an integrated foil dynamic pressure gas thrust bearing.
Fig. 8 is a circumferential exploded view of the integrated foil dynamic pressure gas thrust bearing.
Wherein, 1, an integrated foil, 2, a wave foil;
1.1 parts of coating section, 1.2 parts of ventilation section, 1.3 parts of bump foil positioning groove, 1.4 parts of bump foil fixing section;
2.1, a fixed section, 2.2, a waveform section, 2.3 and a straight section;
301. thrust bottom plate 401, thrust disk.
Detailed Description
In order to clearly illustrate the technical features of the present patent, the following detailed description will make reference to the accompanying drawings.
The utility model is shown in figures 1 and 2, and comprises an integrated foil 1 and a wave foil 2, wherein a plurality of integrated foils 1 and the wave foil 2 are combined along the circumferential direction to form a dynamic pressure gas thrust bearing; one surface of the integrated foil 1 is fixed with a bump foil 2, and the other surface of the integrated foil 1 is covered on the other piece of the integrated foil 1 which is circumferentially arranged and is fixed with the bump foil 2, and the integrated foil is in contact with the surface of the bump foil 2. The integrated foil 1 is both the bottom foil of the bump foil 2 and the top foil of the other bump foil 2.
The integrated foil 1 is of a fan-shaped structure; the bump foil 2 is provided with a fixed section 2.1, a waveform section 2.2 and a straight section 2.3. The fixed section 2.1 is a fixed area of the bump foil 2 and the integrated foil fixed section 1.4; the waveform sections 2.2 and the straight sections 2.3 are distributed at intervals; the straight section 2.3 is in contact with the unitary foil 1; the wave-shaped sections 2.2 are contacted with the other piece of integrated foil 1 after the plurality of fixed integrated foils 1 and the wave foil 2 are combined in the circumferential direction.
As shown in fig. 3 and 4, the integrated foil 1 may include a coating section 1.1, a ventilation section 1.2, a bump foil positioning slot 1.3, and a bump foil fixing section 1.4, where the coating section 1.1 is a region coated with wear-resistant material; the ventilation section 1.2 has a number of circular holes forming ventilation cooling channels between the top and bottom of the integrated foil 1. The corrugated foil positioning groove 1.3 is of a triangular notch structure, the edge of the corrugated foil positioning groove is flush with the edge of the side face of the corrugated foil, and the inner circle of the integrated foil is overlapped with the inner circle of the corrugated foil; the bump foil securing section 1.4 secures the bump foil 2 to the integrated foil 1.
Further improvements may be made where the anchor region of the bump foil is outside the unitary foil coverage.
Further, as shown in fig. 5, the integrated foil may be cut from a flat sheet, or may be formed by stamping or the like.
Further, as shown in fig. 6, the integral foil may be provided with an additional mounting area on the outside and an additional mounting area on the inside, so that the thrust bearing is fixed on the thrust back plate.
While there have been described what are believed to be the preferred embodiments of the present utility model, it will be apparent to those skilled in the art that many more modifications are possible without departing from the principles of the utility model.
Claims (7)
1. The utility model provides a top foil and gas thrust bearing of bottom foil integral type, its characterized in that includes a plurality of integral type foils (1) of fixed mounting on thrust backplate, and a plurality of integral type foils (1) end to end in proper order form the annular to have the overlap region between two adjacent integral type foils (1), be equipped with ripples foil (2) in the overlap region, ripples foil (2) are fixed to link to each other with one of them integral type foil (1) to contact with another integral type foil (1).
2. A hydrodynamic gas thrust bearing with integrated top and bottom foils according to claim 1, wherein the integrated foil (1) is fan-shaped.
3. A hydrodynamic gas thrust bearing with integrated top and bottom foils according to claim 1, wherein the integrated foil (1) is divided into a coating section (1.1), a ventilation section (1.2) and a bump foil fixing section (1.4) in sequence, the coating section (1.1) of the integrated foil (1) being stacked above the bump foil fixing section (1.4) of another integrated foil (1) so as to form an overlap region between the two for accommodating bump foils (2).
4. A hydrodynamic gas thrust bearing with integrated top and bottom foils according to claim 3, wherein a bump foil positioning groove (1.3) is provided between the ventilation section (1.2) and the bump foil fixing section (1.4).
5. The hydrodynamic gas thrust bearing with integrated top and bottom foils according to claim 1, wherein the bump foil (2) is sequentially divided into a fixed section (2.1), a wave section (2.2) and a flat section (2.3), and the fixed section (2.1) is a fixed area of the bump foil (2) and the bump foil fixed section (1.4); the waveform sections (2.2) and the straight sections (2.3) are distributed at intervals; the flat section (2.3) is in contact with the unitary foil (1).
6. A hydrodynamic gas thrust bearing with integrated top and bottom foils according to claim 1, characterized in that the fixing area of the bump foil (2) is located outside the overlapping area.
7. A hydrodynamic gas thrust bearing with integrated top and bottom foils according to claim 1, wherein the outer or inner side of the integrated foils is provided with mounting areas for connection of thrust back plates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322655750.XU CN221221134U (en) | 2023-09-28 | 2023-09-28 | Top foil and bottom foil integrated dynamic pressure gas thrust bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322655750.XU CN221221134U (en) | 2023-09-28 | 2023-09-28 | Top foil and bottom foil integrated dynamic pressure gas thrust bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221221134U true CN221221134U (en) | 2024-06-25 |
Family
ID=91545345
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322655750.XU Active CN221221134U (en) | 2023-09-28 | 2023-09-28 | Top foil and bottom foil integrated dynamic pressure gas thrust bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221221134U (en) |
-
2023
- 2023-09-28 CN CN202322655750.XU patent/CN221221134U/en active Active
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|---|---|---|---|
| GR01 | Patent grant |