CN207906295U - A kind of radial foil self-acting air bearing with thick top foil structure - Google Patents
A kind of radial foil self-acting air bearing with thick top foil structure Download PDFInfo
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- CN207906295U CN207906295U CN201820309163.1U CN201820309163U CN207906295U CN 207906295 U CN207906295 U CN 207906295U CN 201820309163 U CN201820309163 U CN 201820309163U CN 207906295 U CN207906295 U CN 207906295U
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Abstract
The utility model is related to a kind of radial foil self-acting air bearings with thick top foil structure, including bearing block (1), bearing wave foil (2) and top foil (3), top foil (3) is sleeved in bearing block (1), bearing wave foil (2) is assemblied between bearing block (1) and top foil (3), it is characterised in that：It is shrink assembly between the bearing wave foil (2) and top foil (3), the thickness of top foil (3) is 0.5mm 3mm, and the deformation quantity of bearing wave foil (2) is 0.01mm 0.04mm.On the one hand the processing and manufacturing required precision of bearing bearing wave foil is reduced, while solving the problems, such as " recess " of the top foil under heavy duty or shock loading, the damping of bearing is increased, further improves the performance of bearing.
Description
Technical field
The utility model is related to the technical field of air bearing, especially a kind of radial foil with thick top foil structure
Piece self-acting air bearing.
Background technology
A kind of self-applying formula self-acting air bearing using elastic support structure when foil air bearing, it is mainly by axis
Bearing, elastic support structure and top foil composition.Due to using air as lubricant medium, with traditional rolling bearing and oil
Bearing is compared, have rotating speed is high, friction power loss is small, without lubrication, strong shock resistance, can under the adverse circumstances such as high/low temperature work
Make, the advantages such as maintenance cost is low, in air blower, compressor, miniature gas turbine, Micro Turbine Jet Engine, electronic turbine supercharging
It is widely used in the high-speed rotating equipments such as device and accessory power system.
Foil air bearing is the pinch effect supporting rotor high speed using wedge gap air film between top foil and rotor
Operating, to ensure to form stable wedge shape compression air film, on the one hand require the bearing wave foil of top foil bottom to have good
Consistency, while require heavy duty or impact service load under, bearing have good impact resistance.Currently, radial foil
The top foil thickness of piece gas bearing is mostly 0.1mm~0.2mm, to improve bearing performance, it is necessary to improve bearing wave foil processing
Consistency precision, which increase the complexity of technique and processing costs；Simultaneously under heavy duty or shock loading, between adjacent wave foil
Top foil will appear " recess " problem, this can reduce the bearing capacity of bearing, weaken the impact resistance of bearing.
Utility model content
The purpose of this utility model is to provide a kind of simple in structure, reasonable design, and what is overcome the shortage of prior art has thickness
The radial foil self-acting air bearing of top foil structure.
To achieve the goals above, the technological means that the utility model is taken is：
A kind of radial foil self-acting air bearing with thick top foil structure, including bearing block, bearing wave foil and top
Layer paillon, top foil are sleeved in bearing block, and bearing wave foil is assemblied between bearing block and top foil, and key is：Institute
It is shrink assembly between the bearing wave foil stated and top foil, the thickness of top foil is 0.5mm-3mm, supports the deformation of wave foil
Amount is 0.01mm-0.04mm.
The madial wall of the bearing block is provided with axial groove, and bearing wave foil is corrugated elastic bearing component and includes
Wave crest and horizontal connection section, wherein wave crest are contacted with top foil, and horizontal connection section is contacted with bearing base inner surface,
Bearing wave foil is circularized by rectangle ripple thin plate bending, and one end of bearing wave foil is equipped with the block end being upturned and is inlaid in axis
The groove of bearing, top foil is cylindrical shroud barrel structure, in the opposite position of the side wall of top foil and the groove of bearing block
Install the opening that gap is 1mm-3mm.
The madial wall of top foil is provided with wear-resistant coating.
The wear-resistant coating is layer of molybdenum-disulfide or polytetrafluorethylecoatings coatings, thickness 0.02mm-0.05mm.
The utility model has the beneficial effects that：On the one hand the processing and manufacturing required precision of bearing bearing wave foil is reduced, together
When solve the problems, such as top foil heavy duty or shock loading under " recess ", increase the damping of bearing, further improve bearing
Performance.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model.
Fig. 2 is the structural schematic diagram of Fig. 1 bottom brackets.
Fig. 3 is the structural schematic diagram that wave foil is supported in Fig. 1.
Fig. 4 is the structural schematic diagram of top foil in Fig. 1.
Fig. 5 is foil bearing circumferentially deploying and top foil " recess " schematic diagram.
Specific implementation mode
The utility model is described further in the following with reference to the drawings and specific embodiments.
Specific embodiment, as shown in Figures 1 to 4, a kind of radial foil hydrodynamic air axis with thick top foil structure
It holds, including bearing block 1, bearing wave foil 2 and top foil 3, top foil 3 are sleeved in bearing block 1, bearing wave foil 2 is assemblied in
It is shrink assembly, the thickness of top foil 3 between bearing block 1 and top foil 3, between the bearing wave foil 2 and top foil 3
Degree is 0.5mm-3mm, and the deformation quantity of bearing wave foil 2 is 0.01mm-0.04mm.
The madial wall of the bearing block 1 is provided with axial groove, and bearing wave foil 2 is corrugated elastic bearing component and packet
Containing wave crest and horizontal connection section, wherein wave crest is contacted with top foil 3, horizontal connection section and 1 inner surface of bearing block
Contact, bearing wave foil 2 are circularized by Bending of Rectangular Plates, and one end of bearing wave foil 2 is equipped with the block end being upturned and is embedded in
In the groove of bearing block 1, ensure that bearing wave foil 2 will not occur relatively slipping in the circumferential direction when 4 start and stop of rotor, top foil 3 is circle
Cylindrical sleeve structure, it is opening for 1mm-3mm to be equipped with gap in the side wall of top foil 3 position opposite with the groove of bearing block 1
Mouthful, small elastic deformation can occur under air film active force for bearing wave foil 2, occur with top foil 3 and 1 inner surface of bearing block micro-
Sliding runs at high speed for bearing and provides enough dampings, ensures the stability that rotor 4 operates.
To ensure that rotor 4 reduces detent torque, abrasion is reduced, service life is improved, is arranged in the madial wall of top foil 3
It is layer of molybdenum-disulfide or polytetrafluorethylecoatings coatings, thickness 0.02mm-0.05mm to have wear-resistant coating, the wear-resistant coating.
Compared with existing foil air bearing, the utility model is using the method for increasing by 3 thickness of top foil, on the one hand
Foil bearing is reduced to supporting wave foil consistency required precision, while solving bearing top layer foil under heavy duty or shock loading
" depression problem " of piece, at the same using pre-tighten turn match mode, increase the damping of bearing, improve bearing impact resistance and
Run stability.
Increase the thickness of top foil 3, the thickness of traditional foil bearing is 0.1mm~0.2mm, top foil in this programme
3 thickness are 0.5mm~3mm.
1. traditional foil bearing top foil mostly uses band and is process by cans, the top layer foil in this programme
Piece 3 can be used internal and external grinding machine and be process since thickness is larger, easy to process and high precision machining.
2. as shown in figure 5, the bending strength due to top foil 3 is directly proportional to 3 powers of foil thickness, top foil 3
Thickness increase after, bending strength is greatly improved, solve bearing heavy duty or shock loading under top foil it is " recessed
Fall into " problem.
Pretightning force, the top layer foil thickeied in this programme is not present between the top foil 3 and bearing wave foil 2 of traditional foil bearing
It is shrink assembly between piece 3 and bearing wave foil 2, the deflection that 2 height of rear support wave foil is completed in assembly is 0.01mm~0.04mm, this
Sample will not influence the thickness of wedge-shaped air film between top foil 3 and rotor 4 supporting the high consistency of wave foil 2 and being not too high
Degree distribution, to reduce the requirement to wave foil consistency；Simultaneously as using shrink assembly, top foil 3 and circumferential all waves
It is all in close contact between foil, when bearing working, under the effect of dynamic gas film pressure, between top foil 3 and all bearing wave foils 2
There are Coulomb friction power, bearing damp increases, and improves antiwhip.
Claims (4)
1. a kind of radial foil self-acting air bearing with thick top foil structure, including bearing block (1), bearing wave foil (2)
With top foil (3), top foil (3) is sleeved in bearing block (1), and bearing wave foil (2) is assemblied in bearing block (1) and top layer foil
Between piece (3), it is characterised in that：It is shrink assembly, top foil (3) between the bearing wave foil (2) and top foil (3)
Thickness be 0.5mm-3mm, bearing wave foil (2) deformation quantity be 0.01mm-0.04mm.
2. a kind of radial foil self-acting air bearing with thick top foil structure according to claim 1, feature
It is：The madial wall of the bearing block (1) is provided with axial groove, bearing wave foil (2) be corrugated elastic bearing component and
Including wave crest and horizontal connection section, wherein wave crest are contacted with top foil (3), horizontal connection section and bearing block (1)
Inner surface contacts, and bearing wave foil (2) is circularized by Bending of Rectangular Plates, and one end of bearing wave foil (2) is equipped with the card being upturned
Fixed end and the groove for being inlaid in bearing block (1), top foil (3) are cylindrical shroud barrel structure, the side wall in top foil (3)
The position opposite with the groove of bearing block (1) is equipped with the opening that gap is 1mm-3mm.
3. a kind of radial foil self-acting air bearing with thick top foil structure according to claim 1, feature
It is：The madial wall of top foil (3) is provided with wear-resistant coating.
4. a kind of radial foil self-acting air bearing with thick top foil structure according to claim 3, feature
It is：The wear-resistant coating is layer of molybdenum-disulfide or polytetrafluorethylecoatings coatings, thickness 0.02mm-0.05mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820309163.1U CN207906295U (en) | 2018-03-06 | 2018-03-06 | A kind of radial foil self-acting air bearing with thick top foil structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820309163.1U CN207906295U (en) | 2018-03-06 | 2018-03-06 | A kind of radial foil self-acting air bearing with thick top foil structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207906295U true CN207906295U (en) | 2018-09-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820309163.1U Active CN207906295U (en) | 2018-03-06 | 2018-03-06 | A kind of radial foil self-acting air bearing with thick top foil structure |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108180223A (en) * | 2018-03-06 | 2018-06-19 | 石家庄金士顿轴承科技有限公司 | A kind of radial foil self-acting air bearing with thick top foil structure |
| CN110332237A (en) * | 2019-07-05 | 2019-10-15 | 北京智拓博科技有限公司 | Paillon formula air hydrodynamic bearing |
| CN110594284A (en) * | 2019-09-25 | 2019-12-20 | 江苏恒军动力科技有限公司 | Radial air bearing and assembly of micro gas turbine generator and installation method of radial air bearing and assembly |
-
2018
- 2018-03-06 CN CN201820309163.1U patent/CN207906295U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108180223A (en) * | 2018-03-06 | 2018-06-19 | 石家庄金士顿轴承科技有限公司 | A kind of radial foil self-acting air bearing with thick top foil structure |
| CN110332237A (en) * | 2019-07-05 | 2019-10-15 | 北京智拓博科技有限公司 | Paillon formula air hydrodynamic bearing |
| CN110594284A (en) * | 2019-09-25 | 2019-12-20 | 江苏恒军动力科技有限公司 | Radial air bearing and assembly of micro gas turbine generator and installation method of radial air bearing and assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Radial foil self-acting air bearing with thick top foil structure Effective date of registration: 20190716 Granted publication date: 20180925 Pledgee: China Everbright Bank, Limited by Share Ltd, Shijiazhuang branch Pledgor: SHIJIAZHUANG KINGSTON BEARING TECHNOLOGY CO., LTD. Registration number: 2019130000013 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20200724 Granted publication date: 20180925 Pledgee: China Everbright Bank Limited by Share Ltd. Shijiazhuang branch Pledgor: SHIJIAZHUANG KINGSTON BEARING TECHNOLOGY Co.,Ltd. Registration number: 2019130000013 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| CP03 | Change of name, title or address |
Address after: 052360 south of Weiyi Road, Xinji Economic Development Zone, Shijiazhuang City, Hebei Province Patentee after: Hebei Kingston Technology Co.,Ltd. Address before: 052360 Weiyi Road South, Shijiazhuang Economic and Technological Development Zone, Hebei Province Patentee before: SHIJIAZHUANG KINGSTON BEARING TECHNOLOGY Co.,Ltd. |
|
| CP03 | Change of name, title or address |