CN206338317U - Flexible kinetic pressure gas thrust bearing - Google Patents
Flexible kinetic pressure gas thrust bearing Download PDFInfo
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- CN206338317U CN206338317U CN201621322869.9U CN201621322869U CN206338317U CN 206338317 U CN206338317 U CN 206338317U CN 201621322869 U CN201621322869 U CN 201621322869U CN 206338317 U CN206338317 U CN 206338317U
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- bearing
- paillon foil
- pressure gas
- flat paillon
- thrust bearing
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Abstract
The utility model discloses a kind of flexible kinetic pressure gas thrust bearing, including bearing block, the elastic support being connected on bearing block and the flat paillon foil of top layer being connected on elastic support, the flat paillon foil of top layer is fixedly connected on elastic support to form bearing working face by multiple flat paillon foils.The inlet slope structure that the utility model thrust bearing is not pre-machined, its inlet slope is the self-applying formation in bearing working, therefore the utility model bearing does not limit the steering of rotor thrust button, that is rotor thrust button rotates along different directions, the utility model bearing can normal work, and traditional flexible hydrodynamic gas-lubricated bearing only allows rotor thrust button to rotate in one direction.The flexible characteristic adjustment very simple of kinetic pressure gas thrust bearing of the present utility model, can easily adjust the stiffness characteristics of bearing, to adapt to demand of the different application condition to bearing rigidity by changing resilient support body elasticity.
Description
Technical field
The utility model is related to a kind of hydrodynamic thrust bearing, is more particularly to used as bearing working using flexible plane surface
The hydrodynamic thrust bearing in face.
Background technology
Hydrodynamic gas-lubricated bearing is different according to the direction of limitation rotor displacement, is divided into kinetic pressure gas journal bearing and kinetic pressure gas
Thrust bearing, wherein kinetic pressure gas journal bearing limit rotor radial displacement and undertake the load from radial direction, and kinetic pressure gas
Thrust bearing limits rotor axial displacement and undertakes the load from axial direction.Hydrodynamic gas-lubricated bearing can be again firm according to bearing surface
Property or flexibility, are divided into rigid surface hydrodynamic gas-lubricated bearing and flexible surface hydrodynamic gas-lubricated bearing, wherein flexible surface kinetic pressure gas
Bearing due to high stability it is good, be difficult locking, the accuracy of manufacture and the low advantage of assembly precision requirement, at a high speed and superelevation
Have wide application prospects in fast rotary machine.
Flexible surface hydrodynamic gas-lubricated bearing operationally, forms dynamic between the rotor surface and bearing surface run at high speed
Calm the anger film, therefore eliminated with bearing surface by action pneumatic UF membrane rotor and contact friction, but in the relatively low startup rank of rotor speed
Section, rotating speed is not enough to form effective dynamic pressure air film, and friction is contacted so that existing between rotor and bearing surface, causes to start power
Square is big, rotating shaft and working rotor surface wear.Available flexible surface hydrodynamic gas-lubricated bearing is needed with relatively low startup in engineering
The moment of resistance and enough start-stop time life-spans.
The utility model is related to a kind of flexible kinetic pressure gas thrust bearing.Flexible kinetic pressure gas thrust bearing uses multiple pads
The structure design of piece, the quantity of pad is not waited from 4 to 8 and circumferentially direction is uniformly covered with whole bearing working surface.Mesh
The pad of preceding flexible kinetic pressure gas thrust bearing all employs the structure design of inlet slope, this design make thrust button with
Initial wedge-shaped air film is formed between bearing working surface, is conducive to gas dynamic pressure effect in theory near air film gap entrance
Formed, and improve the bearing capacity of kinetic pressure gas thrust bearing.However, being found in actual manufacturing process oblique due to inlet slope
Angle of slope is very small and bearing surface is difficult to for flexibility so that process preferable inlet slope structure extremely difficult.
Undesirable inlet slope structure will not only increase the bearing capacity of bearing, can cause bearing staring torque big, local on the contrary
Serious wear, the problems such as be difficult to take off, and then have influence on the normal of bearing and use.
The utility model is proposed without entrance on the basis of the flexible feature of inheriting tradition flexible thrust hydrodynamic gas-lubricated bearing
The flexible kinetic pressure gas thrust bearing of the plane surface on slope, overcomes that conventional flex hydrodynamic thrust bearing is difficult to and performance is paid no attention to
The problem of thinking.
Utility model content
A purpose of the present utility model is to solve at least the above and/or defect, and offer at least will be described later
Advantage.
In order to realize that there is provided a kind of flexible dynamic pressure air thrust according to these purposes of the present utility model and further advantage
Bearing, including bearing block, the elastic support being connected on bearing block and the flat paillon foil of top layer that is connected on elastic support, institute
The flat paillon foil of top layer is stated to be fixedly connected on elastic support to form bearing working face by multiple flat paillon foils.
Preferably, the resilient support body by integral forming, its be rubber, metal-rubber and ripple paillon foil in it is any one
Kind.
Preferably, the flat foil deformation of the top layer is made by dynamic pressure effect self-applying when thrust bearing works and produce into
Mouth slope.
Preferably, the connected mode of the elastic support and bearing block is using the connection of refractory metal glue sticking.
Preferably, the multiple flat paillon foil is 4~10 pieces of flat paillon foils of sector；The thickness of the flat paillon foil be 0.05~
0.10mm。
Preferably, the flat paillon foil is the flat paillon foil of elastic metallic；The flat paillon foil of elastic metallic be the flat paillon foil of beryllium-bronze,
One kind in the flat paillon foil of 65 manganese steel and the flat paillon foil of GH145/GH4145 high temperature elastomeric alloys.
Preferably, the flat paillon foil upper surface coating polytetrafluorethylecoatings coatings；The flat paillon foil and elastic support
It is using the connection of refractory metal glue sticking to be fixedly connected mode；Used in the connection surface of the flat paillon foil and elastic support
The processing of shot-peening roughening.
Preferably, the bearing working face can realize rotor thrust button bidirectional rotation.
Preferably, 0.5~3mm of thickness of the elastic support.
The utility model provides a kind of flexible flat surface dynamic pressure air thrust for fabricating easy and excellent performance
Bearing, the kinetic pressure gas thrust bearing builds entrance ramp structure using flexible surface self adaptation deformability, makes bearing abundant
While inheriting conventional flex kinetic pressure gas thrust bearing flexible surface feature, make processing and manufacturing more easy.
The utility model at least includes following beneficial effect：
(1) bearing working face of plane can directly be formed by the flat paillon foil of plane, and the flat paillon foil ratio band of plane is initial tiltedly
The top paillon foil on slope is easily many in terms of processing, and surface configuration precision is easily guaranteed that；
(2) elastic support is overall structure, saves the cutting technique step being divided into needed for multiple sector structures, makes to add
Work process simplification, while overall elastic support, which is bonded on bearing block, only needs a bonding step, it is more multiple than being divided into
The multiple bonding of the elastic support of sector structure is more easy, and installation accuracy is easily guaranteed that；
(3) initial working surface of the utility model bearing is plane, it means that bearing surface is with turning during contact friction
Sub- contact surface area is bigger, so that the contact stress of bearing surface unit area is smaller, it is to avoid bearing occurs local serious
Abrasion, makes bearing obtain longer service life；
(4) the inlet slope structure that the utility model bearing is not pre-machined, its inlet slope is in bearing working
Self-applying formation, therefore the utility model bearing does not limit the steering of rotor thrust button, i.e. rotor thrust button along different directions
Rotation, the utility model bearing can normal work, and traditional flexible hydrodynamic gas-lubricated bearing only allows rotor thrust button edge
One direction rotates.
(5) the flexible characteristic adjustment very simple of kinetic pressure gas thrust bearing of the present utility model, can be by changing elasticity
Support body elasticity easily adjusts the stiffness characteristics of bearing, to adapt to demand of the different application condition to bearing rigidity.
Further advantage of the present utility model, target and feature embody part by following explanation, and part will also pass through
Research of the present utility model and practice are understood by the person skilled in the art.
Brief description of the drawings：
Fig. 1 is flexible kinetic pressure gas bearing structure figure described in the utility model；
Fig. 2 is the decomposition texture schematic diagram of flexible hydrodynamic gas-lubricated bearing in Fig. 1；
Fig. 3 is the structure chart after the flexible kinetic pressure gas thrust bearing of the utility model is assembled with rotor；
Fig. 4 is the structural representation of the rotor thrust button described in the utility model；
Fig. 5 is the cross section structure schematic diagram after the flexible kinetic pressure gas thrust bearing of the utility model is assembled with rotor；
Fig. 6 is that rotor thrust button is relative to top layer after the flexible kinetic pressure gas thrust bearing of the utility model is assembled with rotor
The fundamental diagram when bearing working face of flat paillon foil formation is moved counterclockwise；
Fig. 7 is that rotor thrust button is relative to top layer after the flexible kinetic pressure gas thrust bearing of the utility model is assembled with rotor
The fundamental diagram when bearing working face of flat paillon foil formation is moved in the direction of the clock；
In Fig. 1~Fig. 7, the flat paillon foil of 1. top layers, 2. elastic supports, 3. bearing blocks, 4. rotor thrust buttons.
Embodiment：
The utility model is described in further detail below in conjunction with the accompanying drawings, to make those skilled in the art with reference to explanation
Book word can be implemented according to this.
It should be appreciated that such as " having ", "comprising" and " comprising " term used herein do not allot one or many
The presence or addition of individual other elements or its combination.
Fig. 1~2 show a kind of flexible kinetic pressure gas thrust bearing of the present utility model, including bearing block 3, are connected to axle
Elastic support 2 and the flat paillon foil 1 of top layer being connected on elastic support 2 in bearing 3, it is characterised in that the top layer is put down
Paillon foil 1 is fixedly connected on elastic support 2 to form bearing working by multiple flat paillon foils 11；
Fig. 3~4 show the rigging position relation of flexible kinetic pressure gas thrust bearing of the present utility model and rotor, upper
State in scheme, as shown in Fig. 5~7, when bearing working face of the rotor thrust button 4 relative to the flat formation of paillon foil 1 of top layer is by inverse in figure
When clockwise (such as Fig. 6) is moved, the bearing clearance border in left side is air film entrance, and the dynamic pressure effect of porch makes bearing clearance
The flat paillon foil of top layer near gas film pressure rise near right side boundary, right side boundary is turned under in the presence of gas film pressure
Song, forms inlet slope.Similarly, when bearing working face 1 of the rotor thrust button 4 relative to the flat formation of paillon foil 1 of top layer is by suitable in figure
When clockwise (such as Fig. 7) is moved, the bearing clearance border on right side turns into the flat paillon foil of top layer near air film entrance, right side boundary
1 is bent downwardly in the presence of gas film pressure, forms the inlet slope on right side.
In the above-mentioned technical solutions, the annular shape that the elastic support is formed in one, its be rubber, metal-rubber and
Any one in ripple paillon foil, using this technical scheme, can select the elastic support of different structure and thickness to adjust
The rigidity of structure of bearing.
In the above-mentioned technical solutions, the flat foil deformation of the top layer is made by dynamic pressure effect self-applying when thrust bearing works
And inlet slope is produced, using the flexible kinetic pressure gas thrust bearing of the plane surface without inlet slope, overcome conventional flex and move
The problem of pressure thrust bearing is difficult to and performance is undesirable.
In the above-mentioned technical solutions, the connected mode of the elastic support and bearing block is gluing using refractory metal
Connect, using this technical scheme, elastic support can be firmly connected with bearing block in succession, and be prevented from after bonding
Colloid in high temperature environments easy aging the problem of.
In the above-mentioned technical solutions, the multiple flat paillon foil is 4~10 pieces of flat paillon foils of sector；The thickness of the flat paillon foil is
0.05~0.10mm, depending on the size of flat paillon foil is according to bearing size size, has and cuts out shaping by elastic metallic paillon foil and form, adopt
Be conducive to making the flat foil deformation of the top layer when thrust bearing works with the mode of multiple flat paillon foils and produce inlet slope.
In the above-mentioned technical solutions, the flat paillon foil is the flat paillon foil of elastic metallic；The flat paillon foil of elastic metallic is that beryllium is blue or green
One kind in the flat paillon foil of copper, the flat paillon foil of 65 manganese steel and the flat paillon foil of GH145/GH4145 high temperature elastomeric alloys, using these elasticity gold
Belong to flat paillon foil to be conducive to making the flat foil deformation of elastic metallic when thrust bearing works and producing inlet slope.
In the above-mentioned technical solutions, the flat paillon foil upper surface coating polytetrafluorethylecoatings coatings, coating polytetrafluoroethylene (PTFE) is applied
Layer, which reduces frictional force when bearing starts as kollag and reduces flat paillon foil, to wear and tear.
In the above-mentioned technical solutions, the flat paillon foil is to use refractory metal with the mode that is fixedly connected of elastic support
Glue sticking is connected, and firmly can be connected flat paillon foil with elastic support, and be prevented from it is cohesive after colloid in high temperature ring
Under border the problem of easy aging；Handled, carried with this using shot-peening roughening in the connection surface of the flat paillon foil and elastic support
Bonding force between high flat paillon foil and elastic support.
In the above-mentioned technical solutions, the bearing working face can realize rotor thrust button bidirectional rotation, because this practicality is new
Profile shaft holds the inlet slope structure not being pre-machined, and its inlet slope is the self-applying formation in bearing working, therefore this
Utility model bearing does not limit the steering of rotor thrust button, i.e. rotor thrust button rotates along different directions, the utility model bearing
Can normal work, and traditional flexible hydrodynamic gas-lubricated bearing only allows rotor thrust button to rotate in one direction.
In this technical scheme, 0.5~3mm of thickness of the elastic support, using the resilient support of this thickness
Body can be to adapt to demand of the different application condition to thrust bearing rigidity.
Although embodiment of the present utility model is disclosed as above, it is not restricted in specification and embodiment
Listed to use, it can be applied to various suitable fields of the present utility model completely, for those skilled in the art,
Other modification is easily achieved, therefore under the universal limited without departing substantially from claim and equivalency range, this reality
Specific details is not limited to new and shown here as the legend with description.
Claims (9)
1. a kind of flexible kinetic pressure gas thrust bearing, including bearing block, the elastic support that is connected on bearing block and it is connected to
The flat paillon foil of top layer on elastic support, it is characterised in that the flat paillon foil of top layer is fixedly connected on elasticity by multiple flat paillon foils
To form bearing working face on supporter.
2. flexibility kinetic pressure gas thrust bearing as claimed in claim 1, it is characterised in that the elastic support one into
Type, it is any one in rubber, metal-rubber and ripple paillon foil.
3. flexibility kinetic pressure gas thrust bearing as claimed in claim 1, it is characterised in that when thrust bearing works by dynamic pressure
Effect self-applying makes the flat foil deformation of the top layer and produces inlet slope.
4. flexibility kinetic pressure gas thrust bearing as claimed in claim 1, it is characterised in that the elastic support and bearing block
Connected mode be using the connection of refractory metal glue sticking.
5. flexibility kinetic pressure gas thrust bearing as claimed in claim 1, it is characterised in that the multiple flat paillon foil is 4~10
The fan-shaped flat paillon foil of block；The thickness of the flat paillon foil is 0.05~0.10mm.
6. flexibility kinetic pressure gas thrust bearing as claimed in claim 1, it is characterised in that the flat paillon foil is flat for elastic metallic
Paillon foil；The flat paillon foil of elastic metallic is the flat paillon foil of beryllium-bronze, the flat paillon foil of 65 manganese steel and GH145/GH4145 high temperature elastomeric alloys
One kind in flat paillon foil.
7. flexibility kinetic pressure gas thrust bearing as claimed in claim 1, it is characterised in that the flat paillon foil upper surface coating is poly-
Tetrafluoroethene coating；The flat paillon foil is to be connected using refractory metal glue sticking with the mode that is fixedly connected of elastic support；
Handled in the connection surface of the flat paillon foil and elastic support using shot-peening roughening.
8. flexibility kinetic pressure gas thrust bearing as claimed in claim 1, it is characterised in that the bearing working face, which can be realized, to be turned
Sub- thrust button bidirectional rotation.
9. flexibility kinetic pressure gas thrust bearing as claimed in claim 1, it is characterised in that the thickness of the elastic support
0.5~3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621322869.9U CN206338317U (en) | 2016-12-05 | 2016-12-05 | Flexible kinetic pressure gas thrust bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621322869.9U CN206338317U (en) | 2016-12-05 | 2016-12-05 | Flexible kinetic pressure gas thrust bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206338317U true CN206338317U (en) | 2017-07-18 |
Family
ID=59308640
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621322869.9U Active CN206338317U (en) | 2016-12-05 | 2016-12-05 | Flexible kinetic pressure gas thrust bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206338317U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106438676A (en) * | 2016-12-05 | 2017-02-22 | 中国工程物理研究院机械制造工艺研究所 | Flexible dynamic-pressure gas thrust bearing and assembling method thereof |
| CN111156245A (en) * | 2019-12-31 | 2020-05-15 | 宙斯能源动力科技(大连)有限公司 | Gas foil bearing adopting flat plate support |
| CN113894500A (en) * | 2021-09-30 | 2022-01-07 | 西安交通大学 | Manufacturing method of patch type thrust dynamic pressure gas bearing |
-
2016
- 2016-12-05 CN CN201621322869.9U patent/CN206338317U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106438676A (en) * | 2016-12-05 | 2017-02-22 | 中国工程物理研究院机械制造工艺研究所 | Flexible dynamic-pressure gas thrust bearing and assembling method thereof |
| CN106438676B (en) * | 2016-12-05 | 2019-02-19 | 中国工程物理研究院机械制造工艺研究所 | Flexible kinetic pressure gas thrust bearing and its assemble method |
| CN111156245A (en) * | 2019-12-31 | 2020-05-15 | 宙斯能源动力科技(大连)有限公司 | Gas foil bearing adopting flat plate support |
| CN113894500A (en) * | 2021-09-30 | 2022-01-07 | 西安交通大学 | Manufacturing method of patch type thrust dynamic pressure gas bearing |
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