CN109764057A - A kind of multi stage resilient supporting mechanism and kinetic pressure gas thrust bearing - Google Patents
A kind of multi stage resilient supporting mechanism and kinetic pressure gas thrust bearing Download PDFInfo
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- CN109764057A CN109764057A CN201910102642.5A CN201910102642A CN109764057A CN 109764057 A CN109764057 A CN 109764057A CN 201910102642 A CN201910102642 A CN 201910102642A CN 109764057 A CN109764057 A CN 109764057A
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Abstract
The application belongs to mechanical equipment technical field, more particularly to a kind of multi stage resilient supporting mechanism and kinetic pressure gas thrust bearing.Existing bubbling radial dynamic pressure gas bearing, support foil piece with the compliant foil peace foil being bubbled by forming, and the small support stiffness of blister volume is limited, and friction damage and uncertain impact are easy to happen in start and stop and operational process.This application provides a kind of multi stage resilient supporting mechanisms, and including the flat foil component and spring cylinder paillon component being arranged successively, the flat foil component includes several flat foils, and the spring cylinder paillon component includes several spring cylinder paillons；The spring cylinder paillon includes spring cylinder surface, and several through-holes are provided on the spring cylinder surface, and the through-hole is connected with the portion side of twisting, and the portion that twists is convex, and the portion that twists twists for multilayer.Classification undertakes rigidity and load.Increase heat exchange area is streamed in increase, and the heat loss being more advantageous to after carrying for a long time further increases runnability.
Description
Technical field
The application belongs to mechanical equipment technical field, stops more particularly to a kind of multi stage resilient supporting mechanism and kinetic pressure gas
Thrust bearing.
Background technique
Dynamic pressure type gas bearing is that wedge gap is formed between the surface of two relative motion of shaft and bearing, and gas is because of this
Body viscosity, which is driven, generates pressure field by compression in this wedge gap, thus the high speed rotation of supporting rotor.Obvious dynamic pressure
The gas film stiffness of gas bearing is low compared with hydrostatic gas-lubricated bearing, but its dynamic pressure effect will be significantly increased with the increase of revolving speed.Its
Outstanding advantages are without tyre pressure gas source, this improves the economy of turbomachinery and expand it to the complexity for reducing device
Use scope is highly beneficial.With the continuous development of science and technology, flexible since conventional rigid bearing surface deformation is limited
The advantages that for surface gas bearing with its stability height, face contact friction loss is small, can be adjusted at any time the working clearance receives extensively
Using.Using it is more be compliant foil hydrodynamic gas-lubricated bearing, be divided into transverse bearing and two kinds of thrust bearing.Wherein compliant foil
Kinetic pressure gas thrust bearing is supported in the flexible foil of elastic parts, can preferably adapt to the torsional deformation and not of thrust button
Centering, make foil bearing have stability height, vibration resistance, impact resistance, it is insensitive to rotor nonconcentricity, to thermal deformation, radiate
The advantages that property is insensitive, while the prosthetic that bearing products when bearing accident occurs is good, is therefore widely used in aerospace
On the high speed light loading rotating machinery in field.
The structure type of compliant foil kinetic pressure gas thrust bearing mainly has spiral flute type, piping support type, wave foil-type at present
And flat foil type, wherein cantilever style and wave foil-type foil thrust bearing are widely used to turbo-expander, gas turbine, turbine increasing
The high-speed rotating machines such as depressor, turborefrigerator, centrifugal compressor, high-speed centrifugal pump, high-speed fan achieve good warp
Ji benefit.Wave foil of traditional bump foil bearing by constituting the flat foil of bearing surface and with many elastic wave structures forms, flat foil
It is supported on wave foil, wave foil provides elastic foundation for the flat foil of top layer and controls bearing surface rigidity, has certain carrying
Power and stability, but have the shortcomings that complex structural designs, the accuracy of manufacture require and it is at high cost, while rigidity and damping be not axis
It is completely adjustable to, circumferential direction and radial any position.
Existing bubbling radial dynamic pressure gas bearing, support foil piece are made of the compliant foil peace foil with bubbling,
Being bubbled compliant foil has many advantages, such as good rigidity and damping, and with absorbing, vibration resistance is strong, stability is high.But blister volume
Small support stiffness is limited, and friction damage and uncertain impact are easy to happen in start and stop and operational process.
Summary of the invention
1. technical problems to be solved
Based on existing bubbling radial dynamic pressure gas bearing, support foil piece is by with the compliant foil peace foil group being bubbled
At being bubbled compliant foil has many advantages, such as good rigidity and damping, and with absorbing, vibration resistance is strong, stability is high.But it is bubbled
The problem of support stiffness small in size is limited, and friction damage and uncertain impact are easy to happen in start and stop and operational process, this
Application provides a kind of multi stage resilient supporting mechanism and kinetic pressure gas thrust bearing.
2. technical solution
To achieve the above object, this application provides a kind of multi stage resilient supporting mechanisms, flat including what is be arranged successively
Foil component and spring cylinder paillon component, the flat foil component include several flat foils, and the spring cylinder paillon component includes several bullets
Property cylinder paillon；
The spring cylinder paillon includes spring cylinder surface, and several through-holes, the through-hole are provided on the spring cylinder surface
It is connected with the portion side of twisting, the portion that twists is convex, and the portion that twists twists for multilayer.
Optionally, the portion other side that twists is in contact with flat foil.
Optionally, the portion's arrangement mode that twists includes radial in-line arrangement, radial fork row, circumferential in-line arrangement or circumferential fork row.
Optionally, the flat foil is sector, and the quantity of the flat foil is three or three or more, and the flat foil component is horizontal
Section is annular shape；The spring cylinder paillon is sector, and the quantity of the spring cylinder paillon is three or three or more, described
Spring cylinder paillon module transverse section is annular shape.
Optionally, the portion that twists is fixedly connected with the through-hole.
Optionally, the through-hole is rectangle.
Optionally, the first connecting plate, first connecting plate and described flat foil surface one end phase are provided on the flat foil
Connection, the flat foil surface other end are free；Be provided with the second connecting plate on the spring cylinder paillon, second connecting plate with
Spring cylinder surface one end is connected, and the spring cylinder surface other end is free.
The application also provides a kind of kinetic pressure gas thrust bearing, including the multi stage resilient supporting mechanism and bearing block, institute
It states multi stage resilient supporting mechanism and is connected by card slot with the bearing block, the card slot is set on the bearing block.
Optionally, the multi stage resilient supporting mechanism is fixedly connected by setting element with the card slot.
Optionally, the fixed form includes pin positioning and welding rod welding.
3. beneficial effect
Compared with prior art, a kind of multi stage resilient supporting mechanism and kinetic pressure gas thrust bearing provided by the present application has
Beneficial effect is:
Multi stage resilient supporting mechanism provided by the present application reduces the starting of rotor by the bilateral face contact in the portion of twisting
Moment of friction reduces the frictionally damage of rotor and bearing surface, and under less friction square, coulomb resistance is small convenient for sliding；?
During main axis, the small energy loss of structural damping is small；Damping action can make the portion of twisting that radial deformation only occur, can also be with
Not only it deforms but also slides to enhance antiwhip, adapt to microsize variation and larger range of bearing capacity.Portion twist by cutting out
The rectangular steel plates or copper sheet multilayer cut twist, and are equivalent to arch different the twisting of diameter and are stacked together.Each layer, which twists, encircles diameter
The big rigidity minimum that twists, remaining rigidity at different levels are sequentially increased.Under lesser bearing load, top twists and deforms at first,
It when load arrives certain value greatly, twists and is in contact with next stage, classification undertakes rigidity and load.Load is bigger, generates elasticity and becomes
The number of plies of shape is more, and the rigidity of structure of bearing is bigger.On spring cylinder paillon containing mutually independent shell mould protrusion and after twisting
Through-hole changes gas trafficability performance in bearing by changing twist portion's arrangement, position etc., and increase heat-transfer surface is streamed in increase
Product, the heat loss being more advantageous to after carrying for a long time, further increases runnability.
Detailed description of the invention
Fig. 1 is that a kind of multi stage resilient supporting mechanism of the application twists portion's structural schematic diagram；
Fig. 2 is that the spring cylinder paillon of the application twists portion's the first arrangement mode schematic diagram；
Fig. 3 is that the spring cylinder paillon of the application twists portion's the second arrangement mode schematic diagram；
Fig. 4 is that the spring cylinder paillon of the application twists portion's third arrangement mode schematic diagram；
Fig. 5 is that the spring cylinder paillon of the application twists the 4th arrangement mode schematic diagram of portion；
Fig. 6 is that the spring cylinder paillon of the application twists the 5th arrangement mode schematic diagram of portion；
Fig. 7 is the spring cylinder paillon component structure diagram of the application；
Fig. 8 is the spring cylinder foil configuration schematic diagram of the application；
Fig. 9 is a kind of kinetic pressure gas thrust bearing structural schematic diagram of the application；
Figure 10 is a kind of kinetic pressure gas thrust bearing assembling schematic diagram of the application；
Figure 11 is a kind of kinetic pressure gas thrust bearing predeformation schematic diagram of the application；
In figure: the flat foil of 1-, 2- spring cylinder paillon, 3- spring cylinder surface, 4- through-hole, 5- twist portion, the first connecting plate of 6-, 7-
Second connecting plate, 8- rotor thrust plate, 9- bearing block, 10- card slot, 11- main shaft, 12- setting element.
Specific embodiment
Hereinafter, specific embodiment of the reference attached drawing to the application is described in detail, it is detailed according to these
Description, one of ordinary skill in the art can implement the application it can be clearly understood that the application.Without prejudice to the application principle
In the case where, the feature in each different embodiment can be combined to obtain new embodiment, or be substituted certain
Certain features in embodiment, obtain other preferred embodiments.
Gas bearing is applied just on cryogenic turboexpander, has that system is simple, safe and reliable, use temperature range is wide
Extensively, the features such as capable of operating for a long time.So far, existing using gas bearing on air liquefaction, separator turbo-expander
Nearly 40 years history.Static pressure type and two kinds of dynamic pressure type are broadly divided into applied to the gas bearing on cryogenic turboexpander.Static pressure
Gas bearing needs a set of air supply system, increases the complexity of device, and need to expend a certain number of pressed gas, reduces
Its economy, this limits its application in many situations.
Referring to Fig. 1~8, the application provides a kind of multi stage resilient supporting mechanism, including the flat foil component being arranged successively and bullet
Property cylinder paillon component, the flat foil component includes several flat foils 1, and the spring cylinder paillon component includes several spring cylinder paillons 2；
The spring cylinder paillon 2 includes spring cylinder surface 3, is provided with several through-holes 4 on the spring cylinder surface 3, described
Through-hole 4 is connected with 5 side of the portion of twisting, and the portion 5 that twists is convex, and the portion 5 that twists twists for multilayer.
Portion 5 twist as bilateral face contact, is convenient for sliding deformation under less friction square；Simultaneously along deformation direction twist portion 5 by
Grade connection is encircleed and is sequentially increased to radius reduction rigidity；It is flat with the i.e. through-hole 4 of length hollow out hole that twists after bottom layer treatment
Foil, when carrying, stream reinforcing gas converting heat, improve lubrication property.
5 support stiffness of portion twist between wave foil paillon and bubbling paillon, highly-safe starting frictional force is small.To application
It is held in the wave foil-type, bubbling type and spring cylinder profile shaft of same Radius main shaft, the arch in the portion 5 that twists is identical as bubbling to radius of curvature
Less than wave foil, encircle bigger to radius of curvature, encircles smaller to rigidity, thus the rigidity in the portion 5 that twists is apparently higher than wave foil；It twists simultaneously
Portion 5 is bilateral face contact, is contacted compared to the point contact of bubbling with the unilateral line of wave foil, face contact greatly reduces opening for rotor
Dynamic friction torque reduces the frictionally damage of rotor and bearing surface, there is higher wearability, fatigue durability and service life,
Its biggish deformable nargin holds its elasticity higher than profile shaft is bubbled.The spring cylinder paillon 2 to twist is curled up using multi-turn, is undertaken point
Grade load, rigidity are sequentially reduced, and further promote bearing capacity range.Simultaneously because the portion 5 that twists twists for multilayer, change elastic model
It encloses, realizes classification carrying.
Further, 5 other side of portion that twists is in contact with flat foil 1.
The bottom of spring cylinder paillon 2 is bonded with 9 upper surface of bearing block, and twist 5 protruding apex of portion and the flat 1 bottom side phase of foil of top layer
Contact, flat foil 1 are placed between spring cylinder paillon 2 and rotor thrust plate 8.Multi stage resilient supporting mechanism has axis on bearing block 9
Hold lift, axial deformation and the space circumferentially slid.
Further, 5 arrangement mode of portion that twists includes radial in-line arrangement, radial fork row, circumferential in-line arrangement or circumferential fork row.
Also change the 5 supporting-point position of portion that twists, so as to improve foil bearing overall stiffness and Flexible change amount, improve damping
Characteristic.The direction that twists that wherein can adjust the portion 5 that twists, staggeredly combines a variety of arrangement modes；It can also be twisted by changing the portion 5 that twists
Number, size and distribution density change bearing area, adjust stiffness and damping, promote the bearing capacity of bearing.
Further, the flat foil 1 is sector, and the quantity of the flat foil 1 is three or three or more, the flat foil group
Part cross section is annular shape；The spring cylinder paillon 2 is sector, the quantity of the spring cylinder paillon 2 be three or three with
On, the spring cylinder paillon module transverse section is annular shape.
Each sector spring cylinder paillon 2 is stamped to form by the fan-shaped steel disc with flat foil extension, folded with the flat foil 1 of top layer
Conjunction is fixed on bearing block, and spring cylinder paillon 2 and bearing block 9 form angle, by adjusting the first portion 5 that twists of spring cylinder paillon 2
Shape, size and location adjust the corner dimension, and then adjust the starting performance and carrying of kinetic pressure gas thrust bearing
Characteristic.
Further, the portion 5 that twists is fixedly connected with the through-hole 4.
Further, the through-hole 4 is rectangle.
Here through-hole 4 can also be according to operating condition design at other shapes.
Further, the first connecting plate 6, first connecting plate 6 and the flat foil surface one are provided on the flat foil 1
End is connected, and the flat foil surface other end is free；The second connecting plate 7 is provided on the spring cylinder paillon 2, described second connects
Fishplate bar 7 is connected with described 3 one end of spring cylinder surface, and 3 other end of spring cylinder surface is free.
First connecting plate 6 and the connection type on flat foil surface may be a fixed connection, and be also possible to be flexibly connected；Second connects
Fishplate bar 7 and the connection type on spring cylinder surface 3 may be a fixed connection, and be also possible to be flexibly connected.
It that is is that the first connecting plate 6 can be bent to form by flat foil 1 namely the first connecting plate 6 can be flat foil 1
Extension；Second connecting plate 7 can be bent to form by spring cylinder paillon 2, and similarly, the second connecting plate 7 is prolonging for spring cylinder paillon 2
Long section.
Fig. 7 is fan-shaped 2 arrangement schematic diagram of spring cylinder paillon；Fig. 8 is single 2 slitting arrangement of fan-shaped spring cylinder paillon, also
It is to say to be processed spring cylinder paillon 2 one by one, is then combined into sector, is further combined into spring cylinder foil
Piece component.
Referring to Fig. 9~11, the application provides a kind of kinetic pressure gas thrust bearing, including the multi stage resilient supporting mechanism and
Bearing block 9, the multi stage resilient supporting mechanism are connected by card slot 10 with the bearing block 9.
9 upper surface of bearing block is separated into multiple circumferentially uniformly distributed sectors, and multi stage resilient supporting mechanism is according on bearing block 9
The structure distribution of end face.9 upper surface separated place of bearing block is machined with card slot 10 i.e. wedge type groove, and 9 bottom side of bearing block offers 4 and determines
Position hole, multi stage resilient supporting mechanism one end are that rivet or pin are fixed in the wedge groove of bearing block by setting element 12,
One end is free.The extension of multi stage resilient supporting mechanism and glide direction are identical as main shaft direction of rotation, and can be according to the rotation of axis
The position of direction adjustment setting element 12.
Further, the multi stage resilient supporting mechanism is fixedly connected by setting element 12 with the card slot 10.
Further, the fixed form includes pin positioning and welding rod welding.
Bearing working principle is described referring to Fig. 9 and Figure 11:
(1) when bearing is loaded, the deformation and sliding of the flat foil 1 of top layer can make load transfer to lower layer's spring cylinder paillon 2
On, spring cylinder paillon 2 is classified pressure-bearing, and the junior that will touch the portion of twisting 5 beyond single-stage bearing capacity range twists, power is transmitted
Go down, be equivalent to multiple twist and be sequentially connected along deformation direction, rigidity is gradually increased, the lower circumferential and radial deformation of load effect and
Slip characteristic has raising by a relatively large margin compared with single layer elastomeric cylinder paillon 2.The portion 5 that twists being sequentially distributed on bearing can be by bearing capacity weight
New distribution is uniformly transferred on bearing block 9, while being generated adaptability rigidity and being damped so as to undertake load range wider, in time
It consumes axial unstable whirling motion and achievees the effect that vibration damping.
(2) it opens in rotor, stop initial stage and during main shaft 11 runs at high speed, dry friction easily occurs for axis and bearing surface, or
There is main shaft 11 to tilt so that amplitude increasing, causes to wear.At installation initial stage, can be selected to twist portion 5 simultaneously according to bearing capacity size
Determine paillon pretightning force.The selection portion 5 that twists twists number or the more paillon of the number of plies that twists when load is larger, and provides smaller pre-
Clamp force, bearing elastic deformation at this time is increased to be enhanced to neutrality, prevents rigid collision；Less number is selected when load is smaller
Or the number of plies twist 5 spring cylinder paillon 2 of portion and improve preload, adjustment operating in rotation precision and support stiffness, bearing it is steady
Qualitative enhancing.
(3) when rotor thrust surface and bearing block 9 are with relative velocity u movement, the air at wedge shape space import h1 can be right
Air film in the region h2 of gap is squeezed, gas because the viscous effect of its own is driven and is compressed in wedge shape space,
To generate dynamic pressure effect bearing load, axial hydrodynamic power is been significantly enhanced.It is available not to change h1, h2 by wherein h1 > h2
With the kinetic pressure gas thrust bearing of bearing performance.Portion 5 twist simultaneously as around fluid element, air is lubricant, play lubrication and dissipates
The effect of heat, improves the overall performance of kinetic pressure gas thrust bearing.
Change the influence of parameter: the multi stage resilient supporting mechanism being made of flat foil 1 and multi stage resilient cylinder paillon 2 is in bearing block
There is bearing to lift, axial deformation and the space circumferentially slid on 9, there is good static and dynamic performance and to neutrality.Mainly
It is to change by the structure of the multistage 5 spring cylinder paillon 2 of portion that twists to twist, recombination arrangement and realize with the cooperation of flat foil 1
:
(1) bearing rigidity and damping are adjusted by changing 5 arranged direction of portion that twists with arrangement mode.Twisting portion 5 can be by
Design requirement is radially and circumferentially distributed.Using radial in-line arrangement, radial fork row, circumferential in-line arrangement, circumferential fork row etc., such as Fig. 2~5,
It is wherein circumferentially arranged that be distributed bearing capacity outward in more balanced, more influences foil deformation than radial arrangement.Also it can adjust and twist
A variety of arrangement modes are staggeredly combined in the direction that twists in portion 5, change the 5 supporting-point position of portion that twists, so as to improve foil bearing entirety
Rigidity and Flexible change amount improve damping characteristic.
(2) local and whole to the progress of bearing bearing characteristics by suitably increasing and decreasing the quantity, density and the series that twists in the portion 5 that twists
Body is adjusted.5 quantity of portion that twists it is more polyaxial can bearing capacity more big load distribution it is more uniform, but processing is complicated when the portion 5 that twists is excessive,
Damping action makes it that axial deformation easily occur without easy glide deformation, reduces the adjusting that bearing vibrates spindle eccentricity.Centainly
The series that twists in range increases, and gradable pressure-bearing is evenly transferred to bearing capacity on bearing block 9.But it is elastic when the series that twists is more
Gap increases on cylinder paillon 2, and paillon stiffness by itself reduces, and is unfavorable for being formed that strong support runs at high speed bearing stablizes lubrication gas
Film.
(3) effective elasticity predeformation is generated in assembly, further increases the bearing capacity and stability of bearing.Step-by-step arrangement
Bearing preload lotus is increased when pre-load nut, improve axis rigidity facilitate reduce axis flexing, also improve axis rotation with lead
To precision, facilitating pre- vibration proof reduces noise.Angle between flat foil 1 and bearing block 9 determines kinetic pressure gas thrust bearing
Thickness and distribution of force change angle by adjusting the shape size and relative position in the spring cylinder paillon 2 first portion 5 that twists,
To change the starting performance and load-carrying properties of kinetic pressure gas thrust bearing.
Processing method and combination: spring cylinder paillon 2 generally uses copper sheet or steel plate, wherein the portion 5 that twists is rushed by file
Paillon is heated by pressure or laser cutting bar folder along rectangle length direction to twist, and guarantees the at different levels radiuses differences that twist, cuts
Bottom foil after cutting containing rectangular through-hole is connected with the portion of twisting 5, plays fixing element, balanced axial force and circulation heat dissipation.For
Prevent from opening, dry friction occurs between rotor and thrust bearing since air film has not yet been formed for the stopping time, friction damage occurs, can be in flat paillon
Surface adds coating to reach lubricant effect.
Method for arranging and fixing means: paillon is pre- when improving bearing to neutral and assembly using segmentation slitting arrangement
Clamp force.For elastic bearing assembly to be preferably fixed on bearing block 9, generates air gap and guarantee bearing high speed rotation, spring cylinder foil
Piece component is separated at least three circumferentially uniformly distributed sectors, and 9 upper surface separated place of bearing block is machined with wedge groove, fan-shaped elasticity
2 one end of cylinder paillon is screwed in slot, and the other end is arranged and is not fixed with the direction of rotation of axis, effectively inhibits rotor not
Stablize whirling motion.Fan-shaped spring cylinder paillon 2 can also be processed successively to be segmented into strips simultaneously and be fixed in wedge groove, can preferably fitted
Answer rotor misalign and the torsional deformation of thrust button.
Multi stage resilient supporting mechanism provided by the present application reduces the starting of rotor by the bilateral face contact in the portion of twisting 5
Moment of friction reduces the frictionally damage of rotor and bearing surface, and under less friction square, coulomb resistance is small convenient for sliding；?
During main axis, the small energy loss of structural damping is small；Damping action can make 5, the portion of twisting generation radial deformation, can also
Enhance antiwhip not only to deform but also slide, adapts to microsize variation and larger range of bearing capacity.Twist portion 5 by
The rectangular steel plates or copper sheet multilayer cut out twist, and are equivalent to arch different the twisting of diameter and are stacked together.Each layer twists portion
The big rigidity minimum that twists of arch diameter, remaining rigidity at different levels are sequentially increased.Under lesser bearing load, top twists to be become at first
Shape twists with next stage and is in contact when load arrives certain value greatly, and classification undertakes rigidity and load.Load is bigger, generates elasticity
The number of plies of deformation is more, and the rigidity of structure of bearing is bigger.On spring cylinder paillon 2 containing mutually independent shell mould protrusion and after twisting
Through-hole 4, by change twist 5 arrangement of portion, position etc. change bearing in gas trafficability performance, increase stream increase heat exchange
Area, the heat loss being more advantageous to after carrying for a long time, further increases runnability.
Although the application is described above by referring to specific embodiment, one of ordinary skill in the art are answered
Work as understanding, in principle disclosed in the present application and range, many modifications can be made for configuration disclosed in the present application and details.
The protection scope of the application is determined by the attached claims, and claim is intended to technical characteristic in claim
Equivalent literal meaning or range whole modifications for being included.
Claims (10)
1. a kind of multi stage resilient supporting mechanism, it is characterised in that: including the flat foil component and spring cylinder paillon component being arranged successively,
The flat foil component includes several flat foils (1), and the spring cylinder paillon component includes several spring cylinder paillons (2)；
The spring cylinder paillon (2) includes spring cylinder surface (3), is provided with several through-holes (4) on the spring cylinder surface (3),
The through-hole (4) is connected with the portion of twisting (5) side, and the portion that twists (5) is convex, and the portion that twists (5) is that multilayer is curved
Volume.
2. multi stage resilient supporting mechanism as described in claim 1, it is characterised in that: the portion that twists (5) other side and flat foil
(1) it is in contact.
3. multi stage resilient supporting mechanism as described in claim 1, it is characterised in that: the portion that twists (5) arrangement mode includes
Radial in-line arrangement, radial fork row, circumferential in-line arrangement or circumferential fork row.
4. multi stage resilient supporting mechanism as described in claim 1, it is characterised in that: the flat foil (1) is sector, the flat foil
(1) quantity is three or three or more, and the flat foil module transverse section is annular shape；The spring cylinder paillon (2) is fan
Shape, the quantity of the spring cylinder paillon (2) are three or three or more, and the spring cylinder paillon module transverse section is annulus
Shape.
5. multi stage resilient supporting mechanism as described in any one of claims 1 to 4, it is characterised in that: the portion that twists (5) with
The through-hole (4) is fixedly connected.
6. multi stage resilient supporting mechanism as claimed in claim 5, it is characterised in that: the through-hole (4) is rectangle.
7. multi stage resilient supporting mechanism as claimed in claim 6, it is characterised in that: be provided with the first company on the flat foil (1)
Fishplate bar (6), first connecting plate (6) are connected with described flat foil surface one end, and the flat foil surface other end is free；It is described
It is provided on spring cylinder paillon (2) the second connecting plate (7), second connecting plate (7) and described spring cylinder surface (3) one end phase
Connection, spring cylinder surface (3) other end are free.
8. a kind of kinetic pressure gas thrust bearing, it is characterised in that: including the multi stage resilient supporting mechanism and bearing block (9), institute
It states multi stage resilient supporting mechanism to be connected by card slot (10) with the bearing block (9), the card slot (10) is set to the axis
It holds on seat (9).
9. kinetic pressure gas thrust bearing as claimed in claim 8, it is characterised in that: it is fixed that the multi stage resilient supporting mechanism passes through
Bit unit (12) is fixedly connected with the card slot (10).
10. kinetic pressure gas thrust bearing as claimed in claim 9, it is characterised in that: the fixed form includes pin positioning
It is welded with welding rod.
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| CN201910102642.5A CN109764057A (en) | 2019-02-01 | 2019-02-01 | A kind of multi stage resilient supporting mechanism and kinetic pressure gas thrust bearing |
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| CN201910102642.5A CN109764057A (en) | 2019-02-01 | 2019-02-01 | A kind of multi stage resilient supporting mechanism and kinetic pressure gas thrust bearing |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114593138A (en) * | 2022-05-11 | 2022-06-07 | 烟台东德实业有限公司 | Insert-based air bearing |
| CN114941657A (en) * | 2022-05-17 | 2022-08-26 | 烟台东德实业有限公司 | Bearing seat suitable for assembling insert and air bearing based on bearing seat |
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| CN108730331A (en) * | 2018-08-09 | 2018-11-02 | 北京瑞深航空科技有限公司 | The method of adjustment of axial hydrodynamic air bearing and its rigidity and damping |
| CN210003665U (en) * | 2019-02-01 | 2020-01-31 | 西安交通大学 | multi-stage elastic support mechanism and dynamic pressure gas thrust bearing |
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| CA2218044A1 (en) * | 1995-04-18 | 1996-10-24 | United Technologies Corporation | Hydrodynamic air thrust bearing with offset bump foils |
| US6158892A (en) * | 1999-08-25 | 2000-12-12 | Capstone Turbine Corporation | Fluid film thrust bearing having integral compliant foils |
| US20040066991A1 (en) * | 2002-10-03 | 2004-04-08 | R & D Dynamics Corporation | High load capacity foil thrust bearings |
| CN101463868A (en) * | 2009-01-14 | 2009-06-24 | 西安交通大学 | Kinetic pressure gas thrust bearing with axial support |
| KR100954066B1 (en) * | 2010-01-29 | 2010-04-20 | 최충기 | A air foil thrust bearing |
| JP2012092969A (en) * | 2010-09-27 | 2012-05-17 | Ntn Corp | Foil bearing |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114593138A (en) * | 2022-05-11 | 2022-06-07 | 烟台东德实业有限公司 | Insert-based air bearing |
| CN114593138B (en) * | 2022-05-11 | 2022-09-20 | 烟台东德实业有限公司 | Insert-based air bearing |
| CN114941657A (en) * | 2022-05-17 | 2022-08-26 | 烟台东德实业有限公司 | Bearing seat suitable for assembling insert and air bearing based on bearing seat |
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