CN108980198A - A kind of cantilever style thrust foil bearing - Google Patents
A kind of cantilever style thrust foil bearing Download PDFInfo
- Publication number
- CN108980198A CN108980198A CN201810939635.6A CN201810939635A CN108980198A CN 108980198 A CN108980198 A CN 108980198A CN 201810939635 A CN201810939635 A CN 201810939635A CN 108980198 A CN108980198 A CN 108980198A
- Authority
- CN
- China
- Prior art keywords
- fan
- shaped
- cantilever
- paillon
- support members
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000011888 foil Substances 0.000 title claims abstract description 92
- 239000012634 fragment Substances 0.000 claims abstract description 35
- 239000000203 mixture Substances 0.000 claims abstract description 8
- 230000005587 bubbling Effects 0.000 claims description 28
- 239000000463 material Substances 0.000 claims description 11
- 229910045601 alloy Inorganic materials 0.000 claims description 8
- 239000000956 alloy Substances 0.000 claims description 8
- 229910000906 Bronze Inorganic materials 0.000 claims description 7
- 239000010974 bronze Substances 0.000 claims description 7
- 239000010935 stainless steel Substances 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 238000013016 damping Methods 0.000 description 20
- 238000010586 diagram Methods 0.000 description 10
- 239000007789 gas Substances 0.000 description 9
- 230000003319 supportive effect Effects 0.000 description 6
- 230000001965 increasing effect Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 230000008093 supporting effect Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000011218 segmentation Effects 0.000 description 3
- 230000035939 shock Effects 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 230000001976 improved effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000001550 time effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C17/00—Sliding-contact bearings for exclusively rotary movement
- F16C17/04—Sliding-contact bearings for exclusively rotary movement for axial load only
- F16C17/042—Sliding-contact bearings for exclusively rotary movement for axial load only with flexible leaves to create hydrodynamic wedge, e.g. axial foil bearings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C17/00—Sliding-contact bearings for exclusively rotary movement
- F16C17/04—Sliding-contact bearings for exclusively rotary movement for axial load only
- F16C17/08—Sliding-contact bearings for exclusively rotary movement for axial load only for supporting the end face of a shaft or other member, e.g. footstep bearings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C27/00—Elastic or yielding bearings or bearing supports, for exclusively rotary movement
- F16C27/02—Sliding-contact bearings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Support Of The Bearing (AREA)
Abstract
It includes: bearing block, fan-shaped resilient support members, fan-shaped cantilever paillon, pin that the present invention, which provides a kind of cantilever style thrust foil bearing, and bearing block includes support, fan-shaped tile fragment；Wherein, the cylindrical shape of support, support upper end circumferentially offer locating groove, and fan-shaped tile fragment, fan-shaped resilient support members, fan-shaped cantilever paillon, locating groove, pin correspond；The circular configuration that circular configuration, the fan-shaped cantilever paillon of circular configuration, fan-shaped resilient support members composition that fan-shaped tile fragment forms form is completely coincident, and the center point after coincidence offers the circle center hole for wearing main shaft；It is held on the support according to sequence from inside to outside, corresponding fan-shaped tile fragment, fan-shaped resilient support members, fan-shaped cantilever paillon is successively installed, fan-shaped resilient support members are bonded with fan-shaped tile fragment upper surface, adjacent sector cantilever paillon overlap joint.The present invention has the characteristics that multiple-rigidity, loading force are higher, it is stronger to mitigate the ability of impact vibration, can be widely applied to field of bearings.
Description
Technical field
The present invention relates to hydrodynamic gas-lubricated bearing technical fields, more particularly to a kind of cantilever style thrust foil bearing.
Background technique
In practical applications, the angular deviation that will appear axis when the hydrodynamic gas-lubricated bearing operation of carrying, leads to its bearing capacity
It reduces, serious wear.Foil gas bearing is a kind of hydrodynamic gas-lubricated bearing with self-applying flexible surface, flexible surface one
As be made of metal foil.Foil gas bearing has certain rigidity and damping because of its flexible surface, can be according to load
Situation adaptively changes the air-film thickness in bearing, so that bearing is allow to adapt to the angular deviation of axis in a certain range,
It improves the bearing capacity of bearing and mitigates the ability of impact vibration.In recent years, the rapid development of precision machinery and aircraft industry
Requirement to bearing arrangement is also higher and higher, in order to improve rotary motion mechanical high-speed, accuracy, the research of gas bearing with
Production has obtained more and more concerns, and making foil bearing in recent years realizes tremendous development.The engineering of gas bearing
Product practical application on aerial device and related high-speed rotating machine product, for example, extremely low temperature turbo-compressor,
The excellent service performance of helium turboexpander, aircraft air-conditioning etc., foil bearing is examined.But traditional cantilever style
Foil bearing cannot cope with shock loading and the whirlpool in operation process since support construction is single by foil deformation well
It is dynamic, easily cause the friction damage between main shaft and paillon.
It can be seen that in the prior art, paillon is only cantilever style foil bearing and provides single rigidity, so that cantilever style
The loading force of foil bearing is lower, and the ability for mitigating impact vibration is relatively low.
Summary of the invention
In view of this, having the main purpose of the present invention is to provide one kind, multiple-rigidity, loading force are higher, mitigate impact
The stronger cantilever style thrust foil bearing of the ability of vibration.
In order to achieve the above object, technical solution proposed by the present invention are as follows:
A kind of cantilever style thrust foil bearing, comprising: bearing block, three or more fan-shaped resilient support members, three with
On fan-shaped cantilever paillon, three or more pins；Wherein, bearing block includes the segmental pad of cylindric support, three or more
Block；
Support upper end is circumferentially uniformly provided with three or more the locating grooves vertical with main shaft, three or more segmental pads
Block is installed on support upper end；The number of fan-shaped tile fragment, the number of fan-shaped cantilever paillon, is determined at the number of fan-shaped resilient support members
The number of position card slot and the number of pin are all the same, fan-shaped tile fragment, fan-shaped resilient support members, fan-shaped cantilever paillon, positioning card
Slot, pin correspond；The circular configuration of three or more fan-shaped tile fragment compositions, three or more fan-shaped resilient support members groups
At circular configuration, three or more fan-shaped cantilever paillons composition circular configuration be completely coincident, and the center point after being overlapped is opened
Equipped with the circle center hole for wearing main shaft；Held on the support according to sequence from inside to outside, successively install corresponding fan-shaped tile fragment,
Fan-shaped resilient support members, fan-shaped cantilever paillon；It is fixed between adjacent locating groove for three or more locating grooves
It is installed with and the vertical fan-shaped tile fragment of a main shaft and corresponding fan-shaped resilient support members vertical with main shaft, and fan-shaped
Resilient support members are bonded with corresponding fan-shaped tile fragment upper surface；Fan-shaped cantilever paillon is superimposed on corresponding fan-shaped resilient support member
On part, and a fan-shaped side of fan-shaped cantilever paillon is fixed in corresponding locating groove as affixed side by pin overlapping, is fanned
Another fan-shaped side of shape cantilever paillon is in free state as free side, and the free side of each sector cantilever paillon is circumferentially
It is freely overlapped on adjacent fan-shaped cantilever paillon；Fan-shaped resilient support members are contacted with corresponding fan-shaped cantilever paillon line or face connects
It touches, segmented line contact or face contact between adjacent fan-shaped cantilever paillon.
In conclusion in cantilever style thrust foil bearing of the present invention, in cylindric support upper end according to by outside to
Interior sequence, successively install it is corresponding corresponding fan-shaped tile fragment, fan-shaped resilient support members, fan-shaped cantilever paillon are successively installed,
Fan-shaped resilient support members are bonded with fan-shaped tile fragment.When the cantilever style thrust foil bearing bears load, fan-shaped elasticity branch
Support element or fan-shaped cantilever paillon extend.When load is smaller, only fan-shaped cantilever paillon prolongs under the action of gas film pressure
Exhibition, also only fan-shaped cantilever paillon plays a supportive role, and at this moment the cantilever style thrust foil bearing has fan-shaped cantilever paillon knot
There are frictional dampings between structure damping, adjacent fan-shaped cantilever paillon.With the increase of load, the cantilever style thrust foil bearing
There are existing frictional dampings between the structural damping of fan-shaped cantilever paillon, adjacent fan-shaped cantilever paillon to be also gradually increased.With
Load further increases, and fan-shaped resilient support members and fan-shaped cantilever paillon extend under the action of gas film pressure, fan-shaped bullet
Property support component and fan-shaped cantilever paillon play a supportive role jointly, at this moment there is fan-shaped elasticity in the cantilever style thrust foil bearing
Between support element structure damping, the structural damping of fan-shaped cantilever paillon, fan-shaped resilient support members and fan-shaped cantilever paillon
There are frictional dampings between frictional damping, adjacent sector arm paillon；Moreover, with the increase of load, these above-mentioned frictional dampings
Also it is gradually increased.It can be seen that as the load increases, fan-shaped resilient support members are contacted with corresponding fan-shaped cantilever paillon line
Or segmented line contact or face contact further strengthen between face contact, adjacent fan-shaped cantilever paillon, fan-shaped resilient support members
Also gradually reinforce with the coupling stiffness of fan-shaped cantilever paillon, cantilever style thrust foil bearing of the present invention has apparent non-thread
Property multiple rigidity characteristics of segmentation and non-linear piecewise damping change feature so that cantilever style thrust foil bearing of the present invention is held
It carries power and operation stability is greatly improved；Meanwhile as the load increases, fan-shaped cantilever paillon and fan-shaped resilient support
Element intercouples, so that the non-linear rigidity that cantilever style thrust foil bearing of the present invention shows segmentation variation is special
Property, further such that main shaft angle deviation is resumed, unstable whirling motion is also eliminated；In this way, the edges such as bearing clearance, pressure distribution
It is circumferential to be consistent substantially, so that cantilever style thrust foil bearing of the present invention has better bearer properties and reply
The ability of impact.
Detailed description of the invention
Fig. 1 is the main assembly structural schematic diagram of cantilever style thrust foil bearing of the present invention.
Fig. 2 (a) is cantilever style thrust foil bearing of the present invention resilient support members and cantilever foil in the assembled condition
Structural schematic diagram between piece, cantilever paillon under contact condition.
Fig. 2 (b) is cantilever style thrust foil bearing of the present invention by the deformation of gas film pressure generation integrally bending, thrust foil
The structural schematic diagram that piece intermediate region and resilient support members are gradually in contact.
Fig. 2 (c) is that cantilever style thrust paillon of the present invention shows with the structure under the complete fit-state of resilient support members
It is intended to.
Fig. 3 (a) is the structural schematic diagram of contour resilient support members.
Fig. 3 (b) is the structural schematic diagram for getting higher resilient support members.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, right below in conjunction with the accompanying drawings and the specific embodiments
The present invention is described in further detail.
Fig. 1 is the main assembly structural schematic diagram of cantilever style thrust foil bearing of the present invention.As shown in Figure 1, this hair
The bright cantilever style thrust foil bearing includes: fan-shaped resilient support members 2, three of bearing block 1, three or more or more fans
Shape cantilever paillon 3, three or more pins 4；Wherein, bearing block 1 includes the fan-shaped tile fragment of cylindric support, three or more；
Support upper end is circumferentially uniformly provided with three or more the locating grooves vertical with main shaft, three or more segmental pads
Block is installed on support upper end；The number of fan-shaped tile fragment, the number of fan-shaped resilient support members 2, the number of fan-shaped cantilever paillon 3,
The number of locating groove and the number of pin are all the same, and fan-shaped tile fragment, fan-shaped cantilever paillon 3, is determined at fan-shaped resilient support members 2
Position card slot, pin correspond；The circular configuration of three or more fan-shaped tile fragment compositions, three or more fan-shaped resilient support members
The circular configuration of circular configuration, three or more fan-shaped cantilever paillons 3 composition that part 2 forms is completely coincident, and after coincidence
The center point offers the circle center hole for wearing main shaft；It is held on the support according to sequence from inside to outside, is successively installed corresponding
Fan-shaped tile fragment, fan-shaped resilient support members 2, fan-shaped cantilever paillon 3；For three or more locating grooves, adjacent positioning card
It is fixed between slot to be installed with a corresponding sector elastic branch vertical with main shaft with the vertical fan-shaped tile fragment of main shaft and one
Element 2 is supportted, and fan-shaped resilient support members 2 are bonded with corresponding fan-shaped tile fragment upper surface；Fan-shaped cantilever paillon 3 is superimposed on correspondence
Fan-shaped resilient support members 2 on, and a fan-shaped side of fan-shaped cantilever paillon 3 is overlapped by pin 4 as affixed side and is fixed on
In corresponding locating groove, another fan-shaped side of fan-shaped cantilever paillon 3 is in free state, each sector cantilever as free side
The free side of paillon 3 is circumferentially freely overlapped on adjacent fan-shaped cantilever paillon 3；Fan-shaped resilient support members 2 with it is corresponding
Fan-shaped 3 line of cantilever paillon contacts or face contact, segmented line contact or face contact between adjacent fan-shaped cantilever paillon 3.
In the present invention, internal diameter, the outer diameter of the cantilever style thrust foil bearing are respectively 25 millimeters, 50 millimeters.
In short, in cantilever style thrust foil bearing of the present invention, according to from outside to inside in cylindric support upper end
Sequentially, successively install it is corresponding corresponding fan-shaped tile fragment, fan-shaped resilient support members, fan-shaped cantilever paillon be successively installed, it is fan-shaped
Resilient support members are bonded with fan-shaped tile fragment.When the cantilever style thrust foil bearing bears load, sector resilient support member
Part or fan-shaped cantilever paillon extend.When load is smaller, only fan-shaped cantilever paillon extends under the action of gas film pressure,
Only fan-shaped cantilever paillon plays a supportive role, and at this moment the cantilever style thrust foil bearing has fan-shaped cantilever foil configuration resistance
There are frictional dampings between Buddhist nun, adjacent fan-shaped cantilever paillon.With the increase of load, the cantilever style thrust foil bearing exists
Existing frictional damping is also gradually increased between the structural damping of fan-shaped cantilever paillon, adjacent fan-shaped cantilever paillon.With load
Further increase, fan-shaped resilient support members and fan-shaped cantilever paillon extend under the action of gas film pressure, fan-shaped elasticity branch
Support element and fan-shaped cantilever paillon play a supportive role jointly, and at this moment the cantilever style thrust foil bearing has fan-shaped resilient support
Friction between component structure damping, the structural damping of fan-shaped cantilever paillon, fan-shaped resilient support members and fan-shaped cantilever paillon
There are frictional dampings between damping, adjacent sector arm paillon；Moreover, with the increase of load, these above-mentioned frictional dampings also by
It is cumulative big.It can be seen that as the load increases, fan-shaped resilient support members are contacted with corresponding fan-shaped cantilever paillon line or face
Segmented line contact or face contact further strengthen between contact, adjacent fan-shaped cantilever paillon, fan-shaped resilient support members and fan
The coupling stiffness of shape cantilever paillon is also gradually reinforced, and cantilever style thrust foil bearing of the present invention has non-linear point apparent
Duan Duochong rigidity characteristics and non-linear piecewise damping change feature, so that cantilever style thrust foil bearing bearing capacity of the present invention
It is greatly improved with operation stability；Meanwhile as the load increases, fan-shaped cantilever paillon and fan-shaped resilient support members
Intercouple so that cantilever style thrust foil bearing of the present invention show segmentation variation nonlinear stiffness characteristic, into
One step makes that main shaft angle deviation is resumed and unstable whirling motion is also eliminated；In this way, bearing clearance, pressure distribution etc. are circumferentially
Substantially it is consistent, so that cantilever style thrust foil bearing of the present invention has better bearer properties and reply impact
Ability.
Fig. 2 (a) is cantilever style thrust foil bearing of the present invention resilient support members and cantilever foil in the assembled condition
Structural schematic diagram between piece, cantilever paillon under contact condition.Fig. 2 (b) is that cantilever style thrust foil bearing of the present invention is bullied
The structural representation that integrally bending deformation, thrust paillon intermediate region and resilient support members are gradually in contact occurs for film pressure
Figure.Fig. 2 (c) is the structural schematic diagram under cantilever style thrust paillon of the present invention and the complete fit-state of resilient support members.
As shown in Fig. 2 (a), Fig. 2 (b), Fig. 2 (c), sector resilient support members 2 of the present invention and corresponding 3 line of sector cantilever paillon
Contact or face contact, segmented line contact or face contact between adjacent fan-shaped cantilever paillon 3, specifically:
When the cantilever style thrust foil bearing bears unloaded, fan-shaped resilient support members 2 and corresponding sector cantilever
Paillon 3 at affixed side line contact, fan-shaped resilient support members 2 with corresponding sector cantilever paillon 3 in addition at affixed side
Other parts do not contact, and contact between adjacent fan-shaped cantilever paillon 3 in free lap-joint's line.
In practical application, when being not subject to load or assembly due to the cantilever style thrust foil bearing, sector resilient support
Element 2 and fan-shaped cantilever paillon 3 are not subject to pressure, and there is no prolonging with fan-shaped cantilever paillon 3 for fan-shaped resilient support members 2
Exhibition is in free state, and only in lap-joint line contact occurs for adjacent fan-shaped cantilever paillon 3.
When the cantilever style thrust foil bearing load is in the first load range, fan-shaped cantilever paillon 3 with it is corresponding
Equal line contacts fan-shaped resilient support members 2 at affixed side, in fan-shaped 2 middle line vicinity of resilient support members, fan-shaped elasticity branch
Support element 2 is not contacted with corresponding fan-shaped cantilever paillon 3 in other parts, in its extension between adjacent fan-shaped cantilever paillon 3
The contact of lap-joint's line.
In practical application, since the cantilever style thrust foil bearing load is smaller, only fan-shaped cantilever paillon 3 plays support and makees
With the pressure of wedge-shaped air film makes fan-shaped cantilever paillon 3 extend.In addition to affixed side, fan-shaped cantilever paillon 3 and corresponding fan
Line contact occurs near fan-shaped 2 middle line of resilient support members for shape resilient support members 2, and adjacent fan-shaped cantilever paillon 3 only exists
Line contact occurs at extension.
When the cantilever style thrust foil bearing load is in the second load range, fan-shaped cantilever paillon 3 with it is corresponding
Fan-shaped resilient support members 2 between fixing end beginning face contact, adjacent fan-shaped cantilever paillon 3 in its extension lap-joint
Partial face contact.
In practical application, since the cantilever style thrust foil bearing load is larger, the pressure of wedge-shaped air film makes sector
Resilient support members 2, fan-shaped cantilever paillon 3 play a supportive role jointly, but the supporting role of fan-shaped resilient support members 2 at this time compared with
It is small, it is still main support with fan-shaped cantilever paillon 3, a degree of extension, fan-shaped cantilever foil occur for fan-shaped resilient support members 2
3 degree of stretch of piece further strengthens, and a degree of face occurs between fan-shaped resilient support members 2 and fan-shaped cantilever paillon 3 and connects
A degree of face contact also occurs at extension for touching, adjacent sector cantilever paillon 3.Moreover, in the second load range, it is described
Cantilever style thrust foil bearing load is bigger, face contact degree between fan-shaped resilient support members 2 and fan-shaped cantilever paillon 3,
Face contact between adjacent sector cantilever paillon 3 is bigger.
When the cantilever style thrust foil bearing load is in third load range, fan-shaped cantilever paillon 3 with it is corresponding
Fan-shaped resilient support members 2 are bonded completely, are bonded completely between adjacent fan-shaped cantilever paillon 3 in extension overlap.
In practical application, since the cantilever style thrust foil bearing load further increases, the pressure of wedge-shaped air film makes
Fan-shaped resilient support members 2, fan-shaped cantilever paillon 3 play a supportive role jointly, but the support of fan-shaped resilient support members 2 at this time
Effect enhancing, the supporting role of fan-shaped cantilever paillon 3 also have a degree of reinforcement, and fan-shaped resilient support members 2 and sector are outstanding
Arm paillon 3 occurs fitting, extends, and face contact degree of the adjacent sector cantilever paillon 3 at extension also further increases.In third
In load range, the cantilever style thrust foil bearing load is bigger, fan-shaped resilient support members 2 and fan-shaped cantilever paillon 3 it
Between be bonded that tighter, ductility is stronger, the face contact between adjacent fan-shaped cantilever paillon 3 is bigger, until fan-shaped resilient support members 2
The common supporting role between common supporting role, adjacent fan-shaped cantilever paillon 3 between fan-shaped cantilever paillon 3 obtains completely
Release.
In the present invention, the first load range, the second load range, third load range section maxima and minima according to
It is secondary to be gradually increased.Under different working conditions, the first load range, the second load range, third load range have larger
Variation, need specifically to determine according to the actual situation, be illustrated below:
When the parameter configuration that the cantilever style thrust foil bearing carries are as follows: the internal diameter of the cantilever style thrust foil bearing,
Outer diameter is respectively 12 millimeters, 34 millimeters；The number of fan-shaped cantilever paillon is 4, and the subtended angle of fan-shaped cantilever paillon is 120 °；Slope
Duty ratio is 20%, and ramp height is 0.2 millimeter；Fan-shaped cantilever paillon material is nickel-base alloy, the thickness of fan-shaped cantilever paillon
It is 0.1 millimeter；The material of two layers of bubbling paillon as resilient support members is beryllium-bronze, and the thickness of two layers of bubbling paillon is equal
It is 0.07 millimeter, the bubbling height of two layers of bubbling paillon is 0.2 millimeter；Two layers bubbling paillon bubbling be circumferentially uniformly distributed, axis
To insert row, and every bubbling paillon uses two circles to be bubbled: inner ring is bubbled for 3, and outer ring is 6 bubblings.Under the working condition,
First load range is 0N < T≤8N, the second load range is 8N < T≤30N, third load range is T > 30N；Wherein, T
For the load of the cantilever style radial foil bearing.
When the parameter configuration that the cantilever style thrust foil bearing carries are as follows: the internal diameter of the cantilever style thrust foil bearing,
Outer diameter is respectively 12 millimeters, 34 millimeters；The number of fan-shaped cantilever paillon is 6, and the subtended angle of fan-shaped cantilever paillon is 80 °；Slope
Duty ratio is 20%, and ramp height is 0.2 millimeter；The material of fan-shaped cantilever paillon is nickel-base alloy, the thickness of fan-shaped cantilever paillon
Degree is 0.1 millimeter；The material of two layers of bubbling paillon as resilient support members is beryllium-bronze, the thickness of two layers of bubbling paillon
It is 0.07 millimeter, the bubbling height of two layers of bubbling paillon is 0.2 millimeter；Two layers bubbling paillon bubbling be circumferentially uniformly distributed,
Axial insert row, and every bubbling paillon uses two circles to be bubbled: inner ring is bubbled for 2, and outer ring is 4 bubblings.In the working condition
Under, the first load range is 0N < T≤15N, the second load range is 15N < T≤40N, third load range is T > 40N.
When the parameter configuration that the cantilever style thrust foil bearing carries are as follows: the internal diameter of the cantilever style thrust foil bearing,
Outer diameter is respectively 12 millimeters, 34 millimeters；The number of fan-shaped cantilever paillon is 4, and the subtended angle of fan-shaped cantilever paillon is 120 °；Slope
Duty ratio is 20%, and ramp height is 0.2 millimeter；The material of fan-shaped cantilever paillon is nickel-base alloy, the thickness of fan-shaped cantilever paillon
Degree is 0.12 millimeter；The material of two layers of bubbling paillon as resilient support members is beryllium-bronze, the thickness of two layers of bubbling paillon
Degree is 0.07 millimeter, and the bubbling height of two layers of bubbling paillon is 0.2 millimeter；The bubbling of two layers of bubbling paillon is circumferential uniformly to be divided
Cloth, axial insert row, and every bubbling paillon uses two circles to be bubbled: inner ring is bubbled for 3, and outer ring is 6 bubblings.In the operating condition item
Under part, the first load range is 0N < T≤10N, the second load range is 10N < T≤35N, third load range is T > 35N.
Wherein, N indicates the units Newtons of power.
In the present invention, fan-shaped resilient support members 2 are that multilayer is bubbled paillon or wave foil, and multilayer be bubbled paillon with a thickness of
0.1 millimeter, the bubbling height that multilayer is bubbled paillon is greater than or equal to 1.2 millimeters.Fig. 3 (a) is the knot of contour resilient support members
Structure schematic diagram.Fig. 3 (b) is the structural schematic diagram for getting higher resilient support members.As shown in Fig. 3 (a), Fig. 3 (b), from fan-shaped elasticity
For the affixed side of support component 2 to free side, the height of fan-shaped resilient support members 2 is equal；Alternatively, from fan-shaped resilient support members
2 affixed side to free side, the height of fan-shaped resilient support members 2 be arrive again from low to high it is low.
In practical application, heretofore described cantilever style thrust foil bearing can also be by changing fan-shaped resilient support members
2 architectural characteristic optimizes wedge gap in bearing, to improve the bearing capacity of bearing, guarantee that bearing has under heavy shock loads
Better stability and impact resistance alleviate paillon abrasion of traditional cantilever style thrust foil bearing under heavy duty and shock loading
Problem.When using wave foil as fan-shaped resilient support members, changeable structural parameters include wave foil thickness, wave arch radius,
Wave arch quantity, wave arch angle degree in unit length etc.；When using multilayer to be bubbled paillon as fan-shaped resilient support members, can be changed
Structural parameters include the cloth for being bubbled foil thickness, being bubbled the paillon number of plies, be bubbled quantity on unit area, being bubbled insert row or in-line arrangement
Set mode, the shape of bubbling, height of bubbling etc..
Can be distributed in actual use by the height of fan-shaped resilient support members 2 makes fan-shaped cantilever paillon 3 and sector elasticity
Support component 2 obtains different contact conditions.Fan-shaped resilient support members etc. height compared with highly gradually rising and reducing again,
The alto fan-shaped resilient support members of identical load increase process have bigger non-linear rigidity feature.Practical application
In, can as needed to fan-shaped resilient support members height distribution select.Such as by increasing fan-shaped resilient support members 2
Height, bearing can be made to occur fan-shaped cantilever paillon 3 faster during identical load change and flexibly supported with fan-shaped
The case where element 2 is in contact, and can reach fan-shaped cantilever paillon 3 and fan-shaped resilient support members 2 under smaller load
Contact area maximizes.
In practical application, Different structural parameters are can be used in the corresponding fan-shaped resilient support members of different card slots, control big carry
The rigidity of the cantilever style thrust foil bearing, advanced optimizes wedge gap in bearing and increases bearing area under lotus, into
The bearing capacity of one step raising bearing.
In the present invention, the material of fan-shaped cantilever paillon 3 is stainless steel, beryllium-bronze or nickel-base alloy, fan-shaped cantilever paillon 3
With a thickness of 0.1 millimeter.
In the present invention, the subtended angle α of fan-shaped tile fragment, the subtended angle β of sector resilient support members 2 areIt is fan-shaped
The subtended angle γ of cantilever paillon 3 isWherein, M indicates the number of fan-shaped tile fragment, the number of fan-shaped resilient support members 2
Or the number of fan-shaped cantilever paillon 3, and M is natural number.Here, the subtended angle γ of fan-shaped cantilever paillon 3 meets's
Condition is to guarantee that adjacent fan-shaped cantilever paillon 3 overlaps.
In the present invention, the material of bearing block is stainless steel, beryllium-bronze or nickel-base alloy.
Embodiment
In the cantilever style thrust foil bearing of the above-mentioned type, support is cylindrical shape, and support upper surface is circumferentially evenly equipped with 6 fans
Shape tile fragment, 6 fan-shaped resilient support members, 6 fan-shaped cantilever paillons, fan-shaped cantilever foil thickness is 0.1 millimeter, fan-shaped cantilever
Paillon subtended angle is 90 °, and fan-shaped cantilever foil material is nickel-base alloy；Fan-shaped resilient support members are to be bubbled paillon, are bubbled paillon
With a thickness of 0.1 millimeter, being bubbled height is 1.2 millimeters.It is found through experiments that, paillon is bubbled as resilient support member using bilayer
Part, shaft diameter are 25 millimeters of the cantilever style radial foil bearing in the case where 80,000 revs/min of revolving speed, load 30N,
Dominant frequency amplitude is only the half or so of traditional cantilever style thrust foil bearing under identical parameters.This explanation is of the present invention outstanding
The ability that arm type thrust foil bearing has better dissipation eddy energy, keeps main shaft stable operation.Meanwhile 80,000 turns/
Under minute revolving speed, the ultimate bearing capacity that cantilever style thrust foil bearing of the present invention measures is than cantilever style traditional under identical parameters
Thrust foil bearing improves about 40%.
In conclusion the above is merely preferred embodiments of the present invention, being not intended to limit the scope of the present invention.
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in of the invention
Within protection scope.
Claims (8)
1. a kind of cantilever style thrust foil bearing, which is characterized in that the cantilever style thrust foil bearing includes: bearing block, three
A above fan-shaped resilient support members, three or more fan-shaped cantilever paillons, three or more pins；Wherein, bearing block packet
Include the fan-shaped tile fragment of cylindric support, three or more；
Support upper end is circumferentially uniformly provided with three or more the locating grooves vertical with main shaft, three or more fan-shaped tile fragment peaces
Loaded on support upper end；The number of fan-shaped tile fragment, the number of fan-shaped resilient support members, number, the positioning card of fan-shaped cantilever paillon
The number of slot and the number of pin are all the same, fan-shaped tile fragment, fan-shaped resilient support members, fan-shaped cantilever paillon, locating groove, pin
Nail corresponds；The circular configurations of three or more fan-shaped tile fragment compositions, three or more fan-shaped resilient support members composition
Circular configuration, three or more fan-shaped cantilever paillons composition circular configuration be completely coincident, and the center point after being overlapped offers
For wearing the circle center hole of main shaft；It is held on the support according to sequence from inside to outside, corresponding fan-shaped tile fragment, sector is successively installed
Resilient support members, fan-shaped cantilever paillon；For three or more locating grooves, fixed installing between adjacent locating groove
There are and the vertical fan-shaped tile fragment of a main shaft and corresponding fan-shaped resilient support members vertical with main shaft, and fan-shaped elasticity
Support component is bonded with corresponding fan-shaped tile fragment upper surface；Fan-shaped cantilever paillon is superimposed on corresponding fan-shaped resilient support members
On, and a fan-shaped side of fan-shaped cantilever paillon is fixed in corresponding locating groove as affixed side by pin overlapping, it is fan-shaped
Another fan-shaped side of cantilever paillon be in free state as free side, the free side of each fan-shaped cantilever paillon circumferentially oneself
By being overlapped on adjacent fan-shaped cantilever paillon；Fan-shaped resilient support members are contacted with corresponding fan-shaped cantilever paillon line or face connects
It touches, segmented line contact or face contact between adjacent fan-shaped cantilever paillon.
2. cantilever style thrust foil bearing according to claim 1, which is characterized in that it is described sector resilient support members with
Corresponding sector cantilever paillon line contacts or face contact, segmented line contact or face contact between adjacent fan-shaped cantilever paillon, tool
Body are as follows:
When the cantilever style thrust foil bearing bears unloaded, fan-shaped resilient support members exist with corresponding fan-shaped cantilever paillon
Line contact at affixed side, fan-shaped resilient support members and corresponding sector cantilever paillon the other parts in addition at affixed side not
It contacts, is contacted between adjacent fan-shaped cantilever paillon in free lap-joint's line；
When the cantilever style thrust foil bearing load is in the first load range, fan-shaped cantilever paillon and corresponding fan-shaped bullet
Property support component at affixed side, in the contact of the equal line in fan-shaped resilient support members middle line vicinity, fan-shaped resilient support members with
Corresponding sector cantilever paillon is not contacted in other parts, is connect between adjacent fan-shaped cantilever paillon in its extension lap-joint line
Touching；
When the cantilever style thrust foil bearing load is in the second load range, fan-shaped cantilever paillon and corresponding fan-shaped bullet
Property support component connects between fixing end beginning face contact, adjacent fan-shaped cantilever paillon in its extension lap-joint part face
Touching；
When the cantilever style thrust foil bearing load is in third load range, fan-shaped cantilever paillon and corresponding fan-shaped bullet
Property support component is bonded completely, is bonded completely between adjacent fan-shaped cantilever paillon in extension overlap.
3. cantilever style thrust foil bearing according to claim 1 or 2, which is characterized in that the fan-shaped resilient support member
Part is that multilayer is bubbled paillon or wave foil, and multilayer be bubbled paillon with a thickness of 0.1 millimeter, the bubbling height that multilayer is bubbled paillon is big
In or equal to 0.2 millimeter.
4. cantilever style thrust foil bearing according to claim 3, which is characterized in that from the fan-shaped resilient support members
Affixed side to free side, the height of the sector resilient support members is equal.
5. cantilever style thrust foil bearing according to claim 3, which is characterized in that from the fan-shaped resilient support members
Affixed side to free side, the height of the sector resilient support members be arrive again from low to high it is low.
6. any cantilever style thrust foil bearing in -5 according to claim 1, which is characterized in that the sector cantilever
The material of paillon is stainless steel, beryllium-bronze or nickel-base alloy, the sector cantilever paillon with a thickness of 0.1 millimeter.
7. according to any cantilever style thrust foil bearing in claim 6, which is characterized in that the sector tile fragment
Subtended angle α, the fan-shaped resilient support members subtended angle β beThe subtended angle γ of the sector cantilever paillon isWherein, M indicates the number of the number of fan-shaped tile fragment, the number of fan-shaped resilient support members or fan-shaped cantilever paillon
Mesh, and M is natural number.
8. -7 any cantilever style thrust foil bearing according to claim 1, which is characterized in that the material of the bearing block
Matter is stainless steel, beryllium-bronze or nickel-base alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810939635.6A CN108980198A (en) | 2018-08-12 | 2018-08-12 | A kind of cantilever style thrust foil bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810939635.6A CN108980198A (en) | 2018-08-12 | 2018-08-12 | A kind of cantilever style thrust foil bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108980198A true CN108980198A (en) | 2018-12-11 |
Family
ID=64553969
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810939635.6A Pending CN108980198A (en) | 2018-08-12 | 2018-08-12 | A kind of cantilever style thrust foil bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108980198A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110067808A (en) * | 2019-05-13 | 2019-07-30 | 大连理工大学 | A kind of air hydrodynamic foil bearing paillon fixed structure of cylinder pin type |
| CN113090645A (en) * | 2021-04-21 | 2021-07-09 | 北京前沿动力科技股份有限公司 | Foil gas thrust bearing |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4348066A (en) * | 1979-06-11 | 1982-09-07 | The Garrett Corporation | Foil bearing mounting |
| US4462700A (en) * | 1981-11-23 | 1984-07-31 | United Technologies Corporation | Hydrodynamic fluid film thrust bearing |
| US20020097927A1 (en) * | 2001-01-19 | 2002-07-25 | Lee Yong Bok | Hybrid air foil journal bearing and manufacturing method thereof |
| JP2004108485A (en) * | 2002-09-18 | 2004-04-08 | Koyo Seiko Co Ltd | Thrust hydrodynamic pressure bearing |
| CN1563732A (en) * | 2004-03-18 | 2005-01-12 | 西安交通大学 | Mechanical bearing flat foil type thrust gas bearing of high speed surbine |
| JP2006057828A (en) * | 2004-12-02 | 2006-03-02 | Kawasaki Heavy Ind Ltd | Top foil locking mechanism |
| CN101839281A (en) * | 2010-05-27 | 2010-09-22 | 西安交通大学 | Foil dynamical pressure radial gas bearing provided with sectionally-combined composite support |
| JP2012092969A (en) * | 2010-09-27 | 2012-05-17 | Ntn Corp | Foil bearing |
| CN102753849A (en) * | 2009-10-07 | 2012-10-24 | 扭力士有限公司 | Thrust foil air 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 |
| US20140321779A1 (en) * | 2013-04-30 | 2014-10-30 | Korea Institute Of Machinery & Materials | Split combo bearing |
| CN104913064A (en) * | 2015-05-29 | 2015-09-16 | 浙江工业大学 | Gas film face seal structure for cantilever-type foils |
| CN108350933A (en) * | 2015-10-28 | 2018-07-31 | Ntn株式会社 | Thrust foil bearing |
| CN209212776U (en) * | 2018-08-12 | 2019-08-06 | 西安交通大学 | A kind of cantilever style thrust foil bearing |
-
2018
- 2018-08-12 CN CN201810939635.6A patent/CN108980198A/en active Pending
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4348066A (en) * | 1979-06-11 | 1982-09-07 | The Garrett Corporation | Foil bearing mounting |
| US4462700A (en) * | 1981-11-23 | 1984-07-31 | United Technologies Corporation | Hydrodynamic fluid film thrust bearing |
| US20020097927A1 (en) * | 2001-01-19 | 2002-07-25 | Lee Yong Bok | Hybrid air foil journal bearing and manufacturing method thereof |
| JP2004108485A (en) * | 2002-09-18 | 2004-04-08 | Koyo Seiko Co Ltd | Thrust hydrodynamic pressure bearing |
| CN1563732A (en) * | 2004-03-18 | 2005-01-12 | 西安交通大学 | Mechanical bearing flat foil type thrust gas bearing of high speed surbine |
| JP2006057828A (en) * | 2004-12-02 | 2006-03-02 | Kawasaki Heavy Ind Ltd | Top foil locking mechanism |
| CN102753849A (en) * | 2009-10-07 | 2012-10-24 | 扭力士有限公司 | Thrust foil air bearing |
| CN101839281A (en) * | 2010-05-27 | 2010-09-22 | 西安交通大学 | Foil dynamical pressure radial gas bearing provided with sectionally-combined composite support |
| JP2012092969A (en) * | 2010-09-27 | 2012-05-17 | Ntn Corp | Foil bearing |
| US20140321779A1 (en) * | 2013-04-30 | 2014-10-30 | Korea Institute Of Machinery & Materials | Split combo 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 |
| CN104913064A (en) * | 2015-05-29 | 2015-09-16 | 浙江工业大学 | Gas film face seal structure for cantilever-type foils |
| CN108350933A (en) * | 2015-10-28 | 2018-07-31 | Ntn株式会社 | Thrust foil bearing |
| CN209212776U (en) * | 2018-08-12 | 2019-08-06 | 西安交通大学 | A kind of cantilever style thrust foil bearing |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110067808A (en) * | 2019-05-13 | 2019-07-30 | 大连理工大学 | A kind of air hydrodynamic foil bearing paillon fixed structure of cylinder pin type |
| CN113090645A (en) * | 2021-04-21 | 2021-07-09 | 北京前沿动力科技股份有限公司 | Foil gas thrust bearing |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1740839B1 (en) | Radial foil bearing | |
| TWI704297B (en) | Hybrid dynamic pressure gas thrust bearing | |
| US10228015B2 (en) | Hybrid dynamic pressure gas radial bearing | |
| WO2008153226A1 (en) | Radial foil bearing with sealing function | |
| EP3163133A1 (en) | Sliding component | |
| JP6762358B2 (en) | Grooved dynamic pressure radial gas bearing | |
| EP2942530B1 (en) | Turbomachine | |
| CN108916217A (en) | A kind of cantilever style radial foil bearing | |
| CN108980198A (en) | A kind of cantilever style thrust foil bearing | |
| Feng et al. | Theoretical model of flexure pivot tilting pad gas bearings with metal mesh dampers in parallel | |
| CN105202018B (en) | A kind of hybrid kinetic pressure gas journal bearing | |
| CN104895924A (en) | Hybrid aerodynamic journal bearing | |
| CN109915477A (en) | A kind of multi stage resilient support component and kinetic pressure gas transverse bearing | |
| CN209212776U (en) | A kind of cantilever style thrust foil bearing | |
| US10465531B2 (en) | Turbine blade tip shroud and mid-span snubber with compound contact angle | |
| CN104895917A (en) | Hybrid type dynamic-pressure gas thrust bearing | |
| CN105202027B (en) | A kind of hybrid kinetic pressure gas thrust bearing | |
| US7497628B2 (en) | Tilt pad bearing assembly | |
| CN209724968U (en) | A kind of cantilever style radial foil bearing | |
| KR102240987B1 (en) | Bearing device and rotating machine | |
| EP2679842A1 (en) | Hydrodynamic journal bearing - especially for the use in steam turbine and other rotary equipment | |
| CN109780051A (en) | A kind of flexible unit and dynamical pressure radial gas bearing provided | |
| US20220205487A1 (en) | Novel lemon shaped guide to minimize excessive rubbing in rotating machines | |
| CN108603806A (en) | The turbine testboard of rotary part including the component for turbine testboard or for turbine and the method for using the testboard | |
| CN110332121A (en) | Compressor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20230517 Address after: 710049 No. 28 West Xianning Road, Shaanxi, Xi'an Applicant after: XI'AN JIAOTONG University Address before: 710049 No. 28 West Xianning Road, Shaanxi, Xi'an Applicant before: XI'AN JIAOTONG University Applicant before: DIBANGSHI TOUPING POWER TECHNOLOGY (SUZHOU) Co.,Ltd. |
|
| TA01 | Transfer of patent application right |