CN109723720A - A kind of elastic supporting mechanism and kinetic pressure gas thrust bearing - Google Patents
A kind of elastic supporting mechanism and kinetic pressure gas thrust bearing Download PDFInfo
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- CN109723720A CN109723720A CN201910102656.7A CN201910102656A CN109723720A CN 109723720 A CN109723720 A CN 109723720A CN 201910102656 A CN201910102656 A CN 201910102656A CN 109723720 A CN109723720 A CN 109723720A
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Abstract
The application belongs to mechanical equipment technical field, more particularly to a kind of elastic supporting mechanism and kinetic pressure gas thrust bearing.Existing foil bearing generallys use flat foil type, cantilever style or wave foil-type, has both flexible characteristic and the rigidity of structure, has certain bearing capacity and stability.But complex structural designs, the accuracy of manufacture require and at high cost, while rigidity and damping are not that axial, circumferential direction and radial any position are completely adjustable.This application provides a kind of elastic supporting mechanisms, including the flat foil component stacked gradually and spring cylinder paillon group, flat foil component includes several flat foils, and spring cylinder paillon group includes several spring cylinder paillon components, spring cylinder paillon inter-module stacked arrangement, spring cylinder paillon component include several spring cylinder paillons；Spring cylinder paillon includes spring cylinder surface, and several through-holes are provided on spring cylinder surface, and through-hole is connected with the portion side of twisting, and the portion that twists is convex.Integration processing convenience, is easily assembled, exchanges.
Description
Technical field
The application belongs to mechanical equipment technical field, more particularly to a kind of elastic supporting mechanism and dynamic pressure air thrust axis
It holds.
Background technique
Foil gas bearing, as lubricant, has working surface flexible, in different rotating speeds and load using gas
Lotus lower bearing surface can deformation occurs, therefore the change of operating condition can be adapted to by the thickness and rigidity of air film in change bearing clearance
Change.By the deformation of foil elements and the effect of mutual Coulomb friction power, foil bearing can absorb extra energy, make
Rotor-Bearing System keeps higher stability within the scope of certain vibratory impulse and whirling motion.With rigid surface kinetic pressure gas
Bearing is compared, and Foil gas bearing has following characteristics: when bearing unstability, can be caused to foil bearing surface flexible non-
Catastrophic damage, without being impacted to rotor；Bearing clearance increases with the raising of revolving speed, at high speed, temperature
It rises and power consumption is all smaller, therefore there is longer working life and preferable working performance.Under same bearing clearance, foil
Piece bearing has bigger bearing capacity.
Existing foil bearing generallys use flat foil type, cantilever style or wave foil-type and twists portion, has both flexible characteristic and structure
Rigidity has certain bearing capacity and stability.But complex structural designs, the accuracy of manufacture require and it is at high cost, while rigidity and
Damping is not that axial, circumferential direction and radial any position are completely adjustable.
Summary of the invention
1. technical problems to be solved
Flat foil type, cantilever style or wave foil-type is generallyd use based on existing foil bearing to twist portion, have both flexible characteristic with
The rigidity of structure has certain bearing capacity and stability.But complex structural designs, the accuracy of manufacture require and it is at high cost, while just
Degree and damping are not the complete adjustable problems of axial, circumferential direction and radial any position, and this application provides a kind of resilient support
Mechanism and kinetic pressure gas thrust bearing.
2. technical solution
To achieve the above object, this application provides a kind of elastic supporting mechanisms, including the flat foil group stacked gradually
Part and spring cylinder paillon group, the flat foil component include several flat foils, and the spring cylinder paillon group includes several spring cylinder paillons
Component, the spring cylinder paillon inter-module stacked arrangement, the spring cylinder paillon component include several spring cylinder paillons；
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.
Optionally, the portion other side that twists is in contact with upper one layer of spring cylinder paillon or flat foil, each layer elasticity
The through-hole of cylinder paillon group is staggered arrangement.
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 six or six or more, described
Spring cylinder paillon component count is two layers or more, and the spring cylinder paillon module transverse section is annular shape.
Optionally, the portion of twisting is hollow cartridge type, and the portion that twists is fixedly connected with the through-hole.
Optionally, the through-hole is rectangle, and the portion of twisting is that individual pen single layer or multi-turn are layered.
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 elastic supporting mechanism and bearing block, the bullet
Property supporting mechanism is connected by card slot with the bearing block.
Optionally, the elastic 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, the beneficial effect of a kind of elastic supporting mechanism and kinetic pressure gas thrust bearing provided by the present application
Fruit is:
It is rigid to generate multiple adaptability by spring cylinder paillon component multilayered structure for elastic supporting mechanism provided by the present application
Degree expands load range.Elastic supporting mechanism is analogous to bullet using multilayer elastic cylinder paillon component and flat foil component stacked combination
Spring structure.The portion's deformation that twists when bearing compared with big load is small, and being contacted in flat foil inter-module by line is gradually face contact, ties as buffering
Structure can effectively absorb vibration and shock loading.Spring cylinder paillon can provide stable bearing capacity and good when main shaft high speed rotation
Friction, deformation damping store vibrational energy to control antiwhip.And the elastic supporting mechanism is after long duration of action
There is certain automatic recovery ability, be not susceptible to be plastically deformed, makes the loading ability of bearing performance that there is preferable repeatability and use the longevity
Life, has stronger broader adaptation range than traditional bump foil bearing.There are interlayer dampings for multilayer elastic structure.Dynamic pressure air thrust
The damping of bearing also results from the portion of twisting between layers other than resulting between the portion of twisting and top foil and bearing block,
The range that its damping generates and changes is increased, the bearing capacity and stability of bearing are improved.Under small change in size
Damping action can make elastic supporting mechanism that radial deformation only occur, and under large bearing capacity elastic parts both deform slide so that
Its steady running.Change the portion's arrangement that twists between single layer and multilayer, support stiffness adjustable range increases, and is effectively improved bearing capacity
Distribution.By adjusting the arrangement mode in the portion that twists on single layer paillon component, distribution density bearing area and multilayer elastic cylinder foil
Piece component interlayer arrangement mode, it is local and integrally-regulated to the support performance progress of bearing, it has widened for the suitable of different bearings
Answering property location mode.Further alleviate heating problem.Due to the presence of through-hole, so that mutually being passed through in the flat foil space of multilayer hollow out
Logical, the portion of twisting, which increases, to be streamed, and is easy to each interlayer circulation heat dissipation, is effectively improved gas lubrication characteristic.The portion's of twisting knot can also be changed
Structure parameter, each stacking close parameters such as arrangement, material characteristics etc. further to promote the runnability of hydrodynamic gas-lubricated bearing.One
Bodyization processing convenience, is easily assembled, exchanges.
Detailed description of the invention
Fig. 1 is a kind of elastic supporting mechanism structural schematic diagram of the application；
Fig. 2 is that the single layer elastomeric cylinder paillon of the application twists portion's the first arrangement mode schematic diagram；
Fig. 3 is that the single layer elastomeric cylinder paillon of the application twists portion's the second arrangement mode schematic diagram；
Fig. 4 is that the single layer elastomeric cylinder paillon of the application twists portion's third arrangement mode schematic diagram；
Fig. 5 is that the single layer elastomeric cylinder paillon of the application twists the 4th arrangement mode schematic diagram of portion；
Fig. 6 is that the single layer elastomeric cylinder paillon of the application twists the 5th arrangement mode schematic diagram of portion；
Fig. 7 is that the multilayer elastic cylinder paillon of the application twists portion's the first arrangement mode schematic diagram；
Fig. 8 is that the multilayer elastic cylinder paillon of the application twists portion's the second arrangement mode schematic diagram；
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 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.
Just because of the outstanding advantages of Foil gas bearing, many countries have all put into considerable manpower and material resources to foil
Piece bearing is studied, and the U.S., Russia etc. all achieve important progress, some foil bearings in the exploitation of foil bearing
Applied on high rate turbine machinery.For example, the foil bearing on U.S.'s Boeing jumbo, for cold air machine
Using the time be more than 1,000,000 h；It is swollen for low temperature helium turbine that Russia develops the foil bearing that revolving speed is 240,000 r/rain
Swollen machine；It is the foil for turbocharger that 120,000 r/min, start-stop time are more than 100,000 times that MiTi company, the U.S., which has developed revolving speed,
Piece bearing.
Referring to Fig. 1~8, the application provides a kind of elastic supporting mechanism, including the flat foil component stacked gradually and spring cylinder
Paillon group, the flat foil component include several flat foils 1, and the spring cylinder paillon group includes several spring cylinder paillon components, described
Spring cylinder paillon inter-module stacked arrangement, the spring cylinder paillon component include 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.
Containing several mutually independent twist portion 5 and the through-holes 4 after twisting on every layer of spring cylinder paillon component, from zero load to
When load is gradually increased, the portion 5 that twists is contacted with upper and lower spring cylinder paillon component by line in each interlayer is gradually changed to bilateral face contact,
It is uniformly distributed bearing capacity, improves axial stability.Every layer of spring cylinder paillon component contains the through-hole after twisting 4 simultaneously, mutually
Perforation is conducive to heat dissipation, improves gas lubrication characteristic.
Further, 5 other side of portion that twists is in contact with upper one layer of spring cylinder paillon 2 or flat foil 1, described in each layer
The through-hole 4 of spring cylinder paillon group is staggered arrangement.That is it is not overlapped between each layer of through-hole 4, the portion 5 that twists, lower layer is avoided to be stuck in
At upper layer through-hole 4, so that each layer elastic bearing point is staggeredly located out.
When on spring cylinder paillon 2 one layer be flat foil 1 when, the other side in the portion 5 that twists is in contact with flat foil 1, remaining twists
Portion 5 is then in contact with upper one layer of spring cylinder paillon 2.
The portion 5 that twists circumferentially arranges.
Spring cylinder paillon component multiple superposed and guarantee that each layer elastic support points are being staggeredly located out of portion 5 of twisting.It is adjacent
Spring cylinder paillon inter-module lower layer's spring cylinder protrusion fixed point is bonded with transition bottom edge between the spring cylinder of upper layer spring cylinder paillon component,
Transition bottom edge is bonded with 9 surface of bearing block between the spring cylinder of bottom spring cylinder paillon component.Elastic supporting mechanism is in bearing block 9
There is bearing to 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.
The direction that twists that the portion 5 that twists can also be adjusted according to stress condition, staggeredly combines a variety of arrangement modes.
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 is circle；The spring cylinder paillon 2 is sector, and the quantity of the spring cylinder paillon 2 is six or six or more, the bullet
Property cylinder paillon component count be two layers or more, the spring cylinder paillon component be circle.
Further, the portion 5 that twists is hollow cartridge type, and the portion 5 that twists is fixedly connected with the through-hole 4.
Further, the through-hole 4 is rectangle, and the portion 5 that twists is that individual pen single layer or multi-turn are layered.
Portion 5 twist as individual pen single layer or multi-turn layering, changes element elastic range；Can also by change twist size,
Component number size and distribution density change bearing area, adjust damping stiffness.
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 multilayer sector spring cylinder paillon interlayer circumferentially parallelly distribute on, and Fig. 8 is multilayer sector spring cylinder paillon interlayer
Circumferentially it is interspersed.
Referring to Fig. 9~10, the application also provides a kind of kinetic pressure gas thrust bearing, including the elastic supporting mechanism and axis
Seat 9 is held, the elastic supporting mechanism is connected by card slot 10 with the bearing block 9.
Further, the elastic supporting mechanism is fixedly connected by setting element 12 with the card slot 10.Rotor thrust
Plate 8 includes main shaft 11, and elastic supporting mechanism is arranged concentrically with main shaft 11, allows elastic supporting mechanism around 11 turns of main shaft
It is dynamic.
The fixing screws of three or more fan-shaped flat 1, six, foil or more fan-shaped spring cylinder paillons 2 and six or more.Its
In, 9 upper surface of bearing block is circumferentially uniformly provided with three or more card slots 10 i.e. wedge groove, fan-shaped 2 number of spring cylinder paillon, fan
Flat 1 number of foil of shape, wedge groove number and fixing screws number ratio are n:1:1:2 (n is positive integer).Three or more sectors are flat
The multi-layer circular structure and bearing block 9 of circular configuration, six or more fan-shaped spring cylinder paillons 2 composition that foil 1 forms weigh completely
It closes, and there are the circle center holes for passing through main shaft 11 for inner ring side.9 upper end of bearing block according to sequence screw from inside to outside according to
It is secondary to pass through the second connecting plate 7 and the first connecting plate 6, multilayer sector spring cylinder paillon 2 and fan-shaped flat foil 1 are fixed on wedge groove
Interior, the other end is free.
Further, the fixed form includes pin positioning and welding rod welding.
Fan-shaped spring cylinder paillon 2 and 9 material of bearing block are stainless steel, beryllium-bronze or nickel-base alloy, foil thickness 0.1
Millimeter, 5 height of portion that twists are 0.2 millimeter, and by affixed side to free side, 5 height of portion that twists is equal.9 bottom side of bearing block opens up
There is location hole, the setting element 12 is screw, the elastic supporting mechanism of flat foil component and multilayer elastic cylinder paillon component composition
One end is fixed by screws in wedge groove, and the extension direction of elastic element is identical as main shaft direction of rotation, can be according to rotation
Turn direction and adjusts fixed position.Pin can also be used and the fixed paillon of modes such as fix or weld.
Changed by changing barrel shell number size and distribution density on each single layer sector spring cylinder paillon 2 to upper layer elements
Total bearing area adjusts the rigidity and damping of elastic supporting mechanism, promotes the load range of bearing entirety；It is thick by changing barrel shell
Spend and the number of plies that twists adjust elastic range, damping action make its generate radial deformation and it is circumferential slide, and then improve bearing and turn
The start and stop of subsystem and runnability；The different branch for overlapping arrangements and changing the portion that twists are used from radial by the way that each interlayer is axial
It reduces self-excitation whirling motion to change bearing capacity distribution and improves stability in support point position.Arranged radially mode can be used such as diameter
To in-line arrangement or fork row, circumferential in-line arrangement or fork row, parallelly distribute on is can be used in axial alignment, is interspersed and non-uniform Distribution,
Wherein spring cylinder curls up direction and can be exchanged according to stress condition.Each interlayer of spring cylinder paillon 2 guarantees that supporting point position is staggered,
Lower layer's spring cylinder protrusion fixed point is bonded with transition bottom edge between the spring cylinder of upper layer spring cylinder paillon between adjacent spring cylinder paillon, bottom
Transition bottom edge is bonded with bearing seating face between the spring cylinder of spring cylinder paillon.
Referring to Fig.1 between bearing working state lower bearing the way of contact and damping analysis it is as follows:
(1) when kinetic pressure gas thrust bearing bears unloaded, fan-shaped spring cylinder paillon component is with fan-shaped flat foil component
Free state is not subject to pressure, does not extend, and multilayer sector spring cylinder paillon component and fan-shaped flat foil component are at affixed side
Line contact, adjacent sector spring cylinder paillon 2 are contacted in lap-joint along spring cylinder axial direction line.
(2) when kinetic pressure gas thrust bearing is born compared with side crops industry, only fan-shaped flat foil 1 prolongs under the action of gas film pressure
Exhibition, fan-shaped spring cylinder paillon 2 plays a supportive role, and at this moment fan-shaped spring cylinder paillon 2 and fan-shaped flat foil 1 are from fixed side line contact start
Partial face contact, adjacent spring cylinder paillon 2 is in lap-joint's partial face contact.There is fan-shaped flat 1 structural damping of foil, phase in thrust bearing
There are frictional dampings between adjacent sector spring cylinder paillon 2.With being gradually increased for load, fan-shaped spring cylinder paillon 2 and sector are flat
The face contact between face contact degree, adjacent fan-shaped spring cylinder paillon 2 between foil 1 is bigger.
(3) when kinetic pressure gas thrust bearing is born compared with big load, the pressure of wedge-shaped air film makes fan-shaped flat foil 1 and multilayer
Fan-shaped spring cylinder paillon 2 extends, and plays a supportive role jointly, the portion 5 that twists is squeezed deformation and the flat foil face contact of top layer, multilayer bullet
Property cylinder paillon 2 between increase also with bearing capacity, face contact increases, supporting role enhancing.Kinetic pressure gas thrust bearing exists at this time
Fan-shaped flat 1 structural damping of foil, fan-shaped 2 structural damping of spring cylinder paillon, rubbing between fan-shaped flat foil 1 and fan-shaped spring cylinder paillon 2
Wipe the frictional damping between damping and adjacent fan-shaped spring cylinder paillon 2.
(4) when kinetic pressure gas thrust bearing bears radial load or uniformly distributed load, the flat foil 1 of top layer occurs sagitta and becomes
Change and circumferential sliding in load transfer to lower layer's multilayer elastic cylinder paillon 2, can will twist the both ends in portion 5 and paillon is arcwall face
Bearing capacity can be redistributed, uniformly be transferred to 9 inside of bearing block, while generate adaptability rigidity and damping to adapt to by contact
Broader load range consumes unstable whirling motion in time and achievees the effect that vibration damping, effectively inhibit bearing rotor self-excitation whirling motion and
Low frequency eddy improves the stability of rotor operating.At this time there is fan-shaped flat 1 structural damping of foil in kinetic pressure gas thrust bearing, fan-shaped
2 structural damping of spring cylinder paillon, frictional damping and adjacent fan-shaped elasticity between fan-shaped flat foil 1 and fan-shaped spring cylinder paillon 2
Frictional damping between cylinder paillon 2.
Change the influence of parameter: the elastic supporting mechanism being made of top foil 1 and multilayer elastic cylinder paillon 2 is in bearing block
There is in 9 bearing to lift, axial deformation and the space circumferentially slid, there is good static and dynamic performance and stability.Mainly
Change by the structure of multilayer elastic cylinder paillon 2, recombination arrangement and realize with the cooperation of flat foil 1.
(1) bearing rigidity and damping are adjusted by changing single layer axial arranging mode, interlayer arrangement mode.Single layer setting
The shell mould protrusion of different densities, such as using radial in-line arrangement or fork row, circumferential in-line arrangement or fork row etc., as figures 2-6, wherein week
Bearing capacity is distributed outward in arrangement more balanced, more influence foil deformation than radial arrangement.Different overlapping cloth are arranged in multilayer
Mode is set, but should ensure that being staggeredly located out for each layer elastic support points.Also the direction that twists that can adjust the portion 5 that twists staggeredly is combined,
By changing 5 supporting point position of portion that twists, improves foil bearing overall stiffness and Flexible change amount, promote damping characteristic.
(2) local and whole to the progress of bearing support characteristic by suitably increasing and decreasing the quantity, density and curling thickness in the portion that twists
Body is adjusted.Referring to Fig. 7 and Fig. 8, the portion's of twisting more more uniform axial load range undertaken of multiaxis endurance is bigger, and thickness is laminated
More the more damping actions of the major coil number of plies make its generation deformation not slide or not only deform but also slide, adaptability stiffness tuning range
It is bigger.It should be noted that increasing with 5 number of the portion of twisting, the increase of friction effect be will lead near fixing end between paillon
The portion 5 that twists deform difficult and rigidity under same load and increase, be easy deadlock phenomenon occur in interlayer that library can not be provided instead
Human relations damping, brings adverse effect to system stability, therefore it is most important to be appropriately arranged with number.
(3) change pretightning force when bearing and main shaft installation by increasing and decreasing the stacking quantity of spring cylinder paillon 2, adapt to more
Low takeoff speed improves the opening of bearing rotor system, stops and runnability；Multilayered structure to paillon provide biggish deformation with
Heat-dissipating space widens adaptability rigidity and damping, reduces friction loss, helps to realize the efficient stable fortune of high-speed rotating machine
Row.
Processing method and combination: 2 structure of spring cylinder paillon is simple, and integration is easy to process.Wave foil and bubbling element
Add man-hour requirement control to the impact force of paillon, prevents the excessive lesion element of stress, requirement on machining accuracy is higher.And spring cylinder foil
Piece can one-shot form, the i.e. portion 5 that twists of spring cylinder crimping portion is separated with paillon, is penetrated paillon and is more favorably processed.Spring cylinder
Part paillon is directly heated by file or laser cutting bar folder by the cylindric shell mould protrusion on paillon 2 to twist, remaining
Hollow out bottom foil be connected with the portion of twisting 5, play fixed spring cylinder, uniform bearing capacity and perforation heat dissipation.To prevent from opening, the stopping time
Dry friction occurs between rotor and thrust bearing since air film has not yet been formed, friction damage occurs, coating can be added in flat foil surfaces
To reach lubricant effect.
Fixing means: paillon improves pretightning force of the bearing to neutral and assembly when using segmentation spaced apart.For by bullet
Property supporting mechanism be preferably fixed on bearing block 9, generating air gap guarantees bearing high speed rotation, and every layer of elastic supporting mechanism divided
At least three circumferentially uniformly distributed sectors are divided into, 9 upper surface separated place of bearing block is machined with wedge groove, fan-shaped spring cylinder paillon 2 one
End is screwed in slot, and the other end is arranged and is not fixed with the direction of rotation of axis, effectively inhibits the unstable whirling motion of rotor.
Fan-shaped spring cylinder paillon 2 can also be processed successively to be segmented into strips simultaneously and be fixed in wedge groove, rotor can be better adapted to
It misaligns and the torsional deformation of thrust button.The kinetic pressure gas thrust bearing of the application multistage pressure-bearing, which is generally adopted, to be screwed, bullet
The extension of property element and glide direction are identical as 11 direction of rotation of main shaft.The position of screw is determined according to the direction of rotation of main shaft 11
It sets, and facilitates adjustment when changing direction of rotation.But fixed form is not limited to this, and pin positioning, welding rod welding can also be used
Etc. modes.
It is rigid to generate multiple adaptability by spring cylinder paillon component multilayered structure for elastic supporting mechanism provided by the present application
Degree expands load range.Elastic supporting mechanism is analogous to bullet using multilayer elastic cylinder paillon component and flat foil component stacked combination
Spring structure.The portion's deformation that twists when bearing compared with big load is small, and being contacted in flat foil inter-module by line is gradually face contact, ties as buffering
Structure can effectively absorb vibration and shock loading.Spring cylinder paillon 2 can provide stable bearing capacity and good when 11 high speed rotation of main shaft
Friction well, deformation damping store vibrational energy to control antiwhip.And the elastic supporting mechanism is made in long-time
There is certain automatic recovery ability after, be not susceptible to be plastically deformed, makes the loading ability of bearing performance that there is preferable repeatability and make
With the service life, there is stronger broader adaptation range than traditional bump foil bearing.There are interlayer dampings for multilayer elastic structure.Kinetic pressure gas
The damping of thrust bearing other than resulting between the portion of twisting 5 and top foil and bearing block 9, also result from 5 layers of the portion of twisting with
Between layer, the range that its damping generates and changes is increased, the bearing capacity and stability of bearing are improved.In small size
Changing damping action down can make elastic supporting mechanism that radial deformation only occur, and elastic parts both deforms cunning under large bearing capacity
It moves so that its steady running.Change 5 arrangement of portion that twists between single layer and multilayer, support stiffness adjustable range increases, effectively changes
Kind bearing capacity distribution.By adjusting the arrangement mode in the portion 5 that twists on single layer paillon component, distribution density bearing area and multilayer
Spring cylinder paillon component interlayer arrangement mode, it is local and integrally-regulated to the support performance progress of bearing, it has widened for difference
The adaptability location mode of bearing.Further alleviate heating problem.Due to the presence of through-hole, so that in the flat foil space of multilayer hollow out
It is mutually communicated, the portion 5 that twists, which increases, to be streamed, and is easy to each interlayer circulation heat dissipation, is effectively improved gas lubrication characteristic.It can also change curved
5 structural parameters of volume portion, each stacking close parameters such as arrangement, material characteristics etc. further to promote the operation of hydrodynamic gas-lubricated bearing
Performance.Integration processing convenience, is easily assembled, exchanges.
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 elastic supporting mechanism, it is characterised in that: described flat including the flat foil component stacked gradually and spring cylinder paillon group
Foil component includes several flat foils (1), and the spring cylinder paillon group includes several spring cylinder paillon components, the spring cylinder paillon group
Stacked arrangement between part, the spring cylinder paillon component include 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.
2. elastic supporting mechanism as described in claim 1, it is characterised in that: the portion that twists (5) other side and upper one layer of bullet
Property cylinder paillon (2) or flat foil (1) are in contact, and the through-hole (4) of each layer spring cylinder paillon group is staggered arrangement.
3. elastic 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. elastic supporting mechanism as described in claim 1, it is characterised in that: the flat foil (1) is sector, the flat foil (1)
Quantity be three or three or more, the flat foil module transverse section be annular shape；The spring cylinder paillon (2) is sector,
The quantity of the spring cylinder paillon (2) is six or six or more, and the spring cylinder paillon component count is two layers or more, institute
Spring cylinder paillon module transverse section is stated as annular shape.
5. elastic supporting mechanism as described in any one of claims 1 to 4, it is characterised in that: the portion that twists (5) is hollow
Cartridge type, the portion that twists (5) are fixedly connected with the through-hole (4).
6. elastic supporting mechanism as claimed in claim 5, it is characterised in that: the through-hole (4) is rectangle, the portion that twists
(5) it is layered for individual pen single layer or multi-turn.
7. elastic supporting mechanism as claimed in claim 6, it is characterised in that: be provided with the first connecting plate on the flat foil (1)
(6), first connecting plate (6) is connected with described flat foil surface one end, and the flat foil surface other end is free；The elasticity
It is provided with the second connecting plate (7) on cylinder paillon (2), second connecting plate (7) is connected with described spring cylinder surface (3) one end
It connects, spring cylinder surface (3) other end is free.
8. a kind of kinetic pressure gas thrust bearing, it is characterised in that: including the elastic supporting mechanism and bearing block (9), the bullet
Property supporting mechanism be connected with the bearing block (9) by card slot (10).
9. kinetic pressure gas thrust bearing as claimed in claim 8, it is characterised in that: the elastic supporting mechanism passes through positioning member
Part (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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910102656.7A CN109723720A (en) | 2019-02-01 | 2019-02-01 | A kind of elastic supporting mechanism and kinetic pressure gas thrust bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910102656.7A CN109723720A (en) | 2019-02-01 | 2019-02-01 | A kind of elastic supporting mechanism and kinetic pressure gas thrust bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109723720A true CN109723720A (en) | 2019-05-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910102656.7A Pending CN109723720A (en) | 2019-02-01 | 2019-02-01 | A kind of elastic supporting mechanism and kinetic pressure gas thrust bearing |
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| CN (1) | CN109723720A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4682900A (en) * | 1985-12-19 | 1987-07-28 | The Garrett Corporation | Thrust bearing underspring |
| JP2012092969A (en) * | 2010-09-27 | 2012-05-17 | Ntn Corp | Foil bearing |
| CN103267062A (en) * | 2013-05-16 | 2013-08-28 | 西安交通大学 | Dynamic pressure gas thrust bearing with multiple layers of bubbling foils |
| US20180245625A1 (en) * | 2013-09-11 | 2018-08-30 | Xdot Engineering and Analysis, PLLC | Wing foil bearings and methods of manufacturing same |
| CN108843685A (en) * | 2018-08-06 | 2018-11-20 | 敖江昵 | It is a kind of dynamical pressure radial gas bearing provided |
| CN209908992U (en) * | 2019-02-01 | 2020-01-07 | 西安交通大学 | Elastic supporting mechanism and dynamic pressure gas thrust bearing |
-
2019
- 2019-02-01 CN CN201910102656.7A patent/CN109723720A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4682900A (en) * | 1985-12-19 | 1987-07-28 | The Garrett Corporation | Thrust bearing underspring |
| JP2012092969A (en) * | 2010-09-27 | 2012-05-17 | Ntn Corp | Foil bearing |
| CN103267062A (en) * | 2013-05-16 | 2013-08-28 | 西安交通大学 | Dynamic pressure gas thrust bearing with multiple layers of bubbling foils |
| US20180245625A1 (en) * | 2013-09-11 | 2018-08-30 | Xdot Engineering and Analysis, PLLC | Wing foil bearings and methods of manufacturing same |
| CN108843685A (en) * | 2018-08-06 | 2018-11-20 | 敖江昵 | It is a kind of dynamical pressure radial gas bearing provided |
| CN209908992U (en) * | 2019-02-01 | 2020-01-07 | 西安交通大学 | Elastic supporting mechanism and dynamic pressure gas thrust bearing |
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