CN108180221A - A kind of elastic foil gas bearing structure that can incline a little - Google Patents
A kind of elastic foil gas bearing structure that can incline a little Download PDFInfo
- Publication number
- CN108180221A CN108180221A CN201711435565.2A CN201711435565A CN108180221A CN 108180221 A CN108180221 A CN 108180221A CN 201711435565 A CN201711435565 A CN 201711435565A CN 108180221 A CN108180221 A CN 108180221A
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- CN
- China
- Prior art keywords
- bearing
- bearing shell
- little
- bearing block
- incline
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C32/00—Bearings not otherwise provided for
- F16C32/06—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings
- F16C32/0603—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings supported by a gas cushion, e.g. an air cushion
Abstract
A kind of elastic foil gas bearing structure that can incline a little, including bearing block, one end of the arch foil between bearing block and bearing shell is inserted into the slot in bearing block groove, and the other end is free end；Bearing shell is inserted into the groove of bearing block, it is placed on bearing block across long pin one end of bearing shell, the other end is inserted into baffle ring, baffle ring is fixed on by trip bolt on bearing block, bearing shell outer diameter is circle, internal diameter is spliced for multiple circular arcs, and long pin is wrapped up using rubber sleeve, and the present invention can meet a certain range of automatic adjusument by long pin；The deformation of rubber sleeve can provide certain support stiffness and a little revolution space for bearing shell simultaneously, therefore be conducive to improve rotor system stability；Since Pad radius is made of multiple circular arcs, multiple gas wedges can be formed during the work time and are conducive to improve bearing stability.
Description
Technical field
The invention belongs to elastic foil bearing technical field, more particularly to a kind of elastic foil gas bearing knot that can incline a little
Structure.
Background technology
Compliant foil hydrodynamic gas-lubricated bearing is the hydrodynamic bearing using gas as lubricant medium.Have compared to traditional bearing
Noise is small, pollution-free, stability is high, allows many advantages, such as rotating speed is high, running accuracy is good, is obtained in high-speed rotating machine
It is more and more widely used.
Typical compliant foil kinetic pressure gas journal bearing, since bearing shell is fixed, can not carry out automatic adjusument, it is difficult to suitable
It should be compared with the operating mode of big load.Typical circle pad bearing can be only formed a convergence wedge during the work time simultaneously, and stability is opposite
It is not high.
Invention content
In order to overcome the disadvantages of the above prior art, the object of the present invention is to provide a kind of compliant foils that can incline a little
Gas bearing structure can be formed simultaneously multiple convergence wedges and improved bearing during the work time with automatic adjusument bearing shell position
The stability of shaft is improved while bearing capacity.
In order to achieve the above object, the technical solution adopted by the present invention is：
A kind of can incline a little elastic foil gas bearing structure, including bearing block 1, the arch foil between bearing block 1 and bearing shell 3
2 one end is inserted into the slot in 1 groove of bearing block, and the other end is free end；Bearing shell 3 is inserted into the groove of bearing block 1, is passed through
4 one end of long pin of bearing shell 3 is placed on bearing block 1, and the other end is inserted into baffle ring 5, and baffle ring 5 is fixed on axis by trip bolt 6
In bearing 1,3 outer diameter of bearing shell is circle, and internal diameter is spliced for multiple circular arcs.
The 3 internal diameter circular arc quantity of bearing shell is N number of, then the quantity for encircleing foil 2 is just N number of, and bearing block 1 is inserted with bearing shell 3
Slot is just N number of, and the long pin 4 across bearing shell 3 is N number of, wherein the N-1 long pin 4 from 3 arbitrary side free end number of bearing shell
It is wrapped up using rubber sleeve 7, a long pin 4 nearest apart from 3 opposite side free end of bearing shell is wrapped up without using rubber sleeve 7.
The long pin 4 coordinates with the pin hole in bearing shell 3 for small―gap suture.
The thickness thickness of the bearing shell 3 is 1~3mm.
Multiple splicing circular arc curvature radiuses of 3 internal diameter of bearing shell are 1~1.2 times of internal diameter nominal radius, wherein spelling
The center location for connecing circular arc biases 0.02~0.08 times of nominal radius for the Pad radius name center of circle.
The preparation method of the bearing shell 3, includes the following steps：Internal diameter is processed first as circular bearing shell blank, so
Afterwards using the outer diameter of bearing shell blank as positioning datum, multiple splicing circular arcs are processed in inner radius, finally process notch, form axis
Watts 3.
Beneficial effects of the present invention are：
Since the general foil bearing bearing shell of the thickness ratio of bearing shell 3 is thick, by long pin 4 can meet it is a certain range of from
It adapts to adjust；The deformation of rubber sleeve can provide certain support stiffness and revolution space, therefore have a little for bearing shell simultaneously
Conducive to raising rotor system stability；Since 3 internal diameter of bearing shell is made of multiple circular arcs, multiple gas can be formed during the work time
Wedge is conducive to improve bearing stability.
Description of the drawings
Fig. 1 is overall schematic of the present invention.
Fig. 2 is the schematic diagram that the present invention removes baffle ring 5.
Fig. 3 is the schematic diagram of bearing shell 3 of the present invention.
Fig. 4 is to form multiple gas wedge schematic diagrames in the course of work of the present invention.
Fig. 5 prepares schematic diagram for bearing shell 3 of the present invention.
Specific embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings.
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, a kind of elastic foil gas bearing structure that can incline a little, including bearing block 1,
One end of arch foil 2 between bearing block 1 and bearing shell 3 is inserted into the slot in 1 groove of bearing block, and the other end is free end, encircles foil 2
Certain rigidity for bearing can be provided, prevent bearing shell 3 from excessive deformation occur；Bearing shell 3 is inserted into the groove of bearing block 1, is passed through
4 one end of long pin of bearing shell 3 is placed on bearing block 1, the other end be inserted into baffle ring 5 in, bearing shell 3 can around long pin 4 certain
In the range of swing, automatic adjusument improves the stability of shaft 8, and baffle ring 5 is fixed on by trip bolt 6 on bearing block 1, keeps off
Circle 5 is played to arch foil 2, bearing shell 3, long pin 4, the positioning action of rubber sleeve 7；3 outer diameter of bearing shell is circle, and internal diameter is multiple circular arcs
It is spliced, the multistage splicing circular arc of 3 inner radius of bearing shell can form multiple gas wedges, such as a, b, c in 8 course of work of shaft
Three gas film pressure areas are conducive to improve bearing stability.It is a length of in circumferential reserved one of bearing shell 3 to ensure that installation is smooth
The notch d of 0.5mm, facilitates installation.
The 3 internal diameter circular arc quantity of bearing shell is N number of, then the quantity for encircleing foil 2 is just N number of, and bearing block 1 is inserted with bearing shell 3
Slot is just N number of, and the long pin 4 across bearing shell 3 is N number of, wherein the N-1 long pin 4 from 3 arbitrary side free end number of bearing shell
It is wrapped up using rubber sleeve 7, a long pin 4 nearest apart from 3 opposite side free end of bearing shell is wrapped up without using rubber sleeve 7, is wrapped up
The long pin 4 of rubber sleeve 7 can provide certain support stiffness for bearing shell 3 by the deformation of rubber sleeve 7 and rotate a little
Space.
The long pin 4 coordinates with the pin hole in bearing shell 3 for small―gap suture.
The thickness thickness of the bearing shell 3 is 1~3mm.
Multiple splicing circular arc curvature radiuses of 3 internal diameter of bearing shell are 1~1.2 times of internal diameter nominal radius, wherein spelling
The center location for connecing circular arc biases 0.02~0.08 times of nominal radius for the Pad radius name center of circle.
As shown in figure 5, the preparation method of the bearing shell 3, includes the following steps：Internal diameter is processed first as circular bearing shell
Blank then using the outer diameter of bearing shell blank as positioning datum, processes multiple splicing circular arcs in inner radius, finally processes
0.5mm notch d form bearing shell 3.
The elastic foil bearing assembly method that can incline a little, includes the following steps：Arch foil 2 is inserted into bearing block first
In 1；Bearing shell 3 is inserted into bearing block 1, it is ensured that 3 outer diameter of bearing shell is contacted with arch 2 vault of foil；It will be apart from 3 arbitrary side of bearing shell freedom
A nearest long pin 4 of end is inserted directly into the reserved pin hole of bearing shell 3, and it is right that remaining all long pin 4 initially passes through rubber sleeve 7
It is inserted into afterwards in the reserved pin hole of bearing shell 3；Baffle ring 5 is fixed on bearing block 1；Trip bolt 6 is installed.
Claims (6)
- The elastic foil gas bearing structure 1. one kind can incline a little, including bearing block (1), it is characterised in that：Bearing block (1) and axis One end of arch foil (2) between watt (3) is inserted into the slot in bearing block (1) groove, and the other end is free end；Bearing shell (3) is inserted It in the groove for entering bearing block (1), is placed on bearing block (1) across long pin (4) one end of bearing shell (3), the other end is inserted into baffle ring (5) in, baffle ring (5) is fixed on by trip bolt (6) on bearing block (1), and bearing shell (3) outer diameter is circle, and internal diameter is multiple circles Arc is spliced.
- The elastic foil gas bearing structure 2. one kind according to claim 1 can incline a little, it is characterised in that：The axis Watt (3) internal diameter circular arc quantity is N number of, then the quantity for encircleing foil (2) is just N number of, and the slot of bearing block (1) and bearing shell (3) is just N A, the long pin (4) across bearing shell (3) is N number of, wherein the N-1 long pin from the arbitrary side free end number of bearing shell (3) (4) it is wrapped up using rubber sleeve (7), a long pin (4) nearest apart from bearing shell (3) opposite side free end is without using rubber sleeve (7) it wraps up.
- The elastic foil gas bearing structure 3. one kind according to claim 1 can incline a little, it is characterised in that：The length Pin (4) coordinates with the pin hole in bearing shell (3) for small―gap suture.
- The elastic foil gas bearing structure 4. one kind according to claim 1 can incline a little, it is characterised in that：The axis The thickness thickness of watt (3) is 1~3mm.
- The elastic foil gas bearing structure 5. one kind according to claim 1 can incline a little, it is characterised in that：The axis Multiple splicing circular arc curvature radiuses of watt (3) internal diameter are 1~1.2 times of internal diameter nominal radius, wherein the center of circle position of splicing circular arc It is set to the nominal radius that the Pad radius name center of circle biases 0.02~0.08 times.
- 6. a kind of preparation method of the bearing shell of elastic foil gas bearing structure that can incline a little according to claim 1, It is characterized in that, includes the following steps：Internal diameter is processed first as circular bearing shell blank, is then fixed using the outer diameter of bearing shell blank Position benchmark, multiple splicing circular arcs are processed in inner radius, finally process notch, form bearing shell (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711435565.2A CN108180221B (en) | 2017-12-26 | 2017-12-26 | A kind of elastic foil gas bearing structure that can incline a little |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711435565.2A CN108180221B (en) | 2017-12-26 | 2017-12-26 | A kind of elastic foil gas bearing structure that can incline a little |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108180221A true CN108180221A (en) | 2018-06-19 |
| CN108180221B CN108180221B (en) | 2019-07-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711435565.2A Active CN108180221B (en) | 2017-12-26 | 2017-12-26 | A kind of elastic foil gas bearing structure that can incline a little |
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| Country | Link |
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| CN (1) | CN108180221B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110030269A (en) * | 2019-04-24 | 2019-07-19 | 上海捷氢科技有限公司 | Elastic foil gas bearing and elastic foil gas bearing friction are secondary |
| CN111503134A (en) * | 2020-04-28 | 2020-08-07 | 北京稳力科技有限公司 | Air compressor, motor and gas dynamic pressure radial bearing |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3438686A (en) * | 1967-01-23 | 1969-04-15 | Murray Co Inc | Bearing support bushing |
| CN103438096A (en) * | 2013-08-02 | 2013-12-11 | 湖南大学 | Foil gas bearing in similar beam structure and with bump foil distributed peripherally |
| CN104204566A (en) * | 2012-04-06 | 2014-12-10 | 株式会社Ihi | Radial foil bearing |
| CN107218299A (en) * | 2017-08-03 | 2017-09-29 | 中冶赛迪工程技术股份有限公司 | Laying head ellipse filmatic bearing structure |
-
2017
- 2017-12-26 CN CN201711435565.2A patent/CN108180221B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3438686A (en) * | 1967-01-23 | 1969-04-15 | Murray Co Inc | Bearing support bushing |
| CN104204566A (en) * | 2012-04-06 | 2014-12-10 | 株式会社Ihi | Radial foil bearing |
| CN103438096A (en) * | 2013-08-02 | 2013-12-11 | 湖南大学 | Foil gas bearing in similar beam structure and with bump foil distributed peripherally |
| CN107218299A (en) * | 2017-08-03 | 2017-09-29 | 中冶赛迪工程技术股份有限公司 | Laying head ellipse filmatic bearing structure |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110030269A (en) * | 2019-04-24 | 2019-07-19 | 上海捷氢科技有限公司 | Elastic foil gas bearing and elastic foil gas bearing friction are secondary |
| CN111503134A (en) * | 2020-04-28 | 2020-08-07 | 北京稳力科技有限公司 | Air compressor, motor and gas dynamic pressure radial bearing |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108180221B (en) | 2019-07-12 |
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