CN106884873A - Rolling bearing and aero-engine - Google Patents
Rolling bearing and aero-engine Download PDFInfo
- Publication number
- CN106884873A CN106884873A CN201510933193.0A CN201510933193A CN106884873A CN 106884873 A CN106884873 A CN 106884873A CN 201510933193 A CN201510933193 A CN 201510933193A CN 106884873 A CN106884873 A CN 106884873A
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- CN
- China
- Prior art keywords
- rolling
- bearing
- raceway
- rolling element
- rolling bearing
- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/58—Raceways; Race rings
Abstract
The present invention relates to a kind of rolling bearing and aero-engine, wherein, rolling bearing includes outer ring, rolling element, inner ring and is circumferentially spaced the multiple raceways being arranged on the periphery of the inner circumferential of outer ring or inner ring, and a rolling element is provided with each raceway.By in the inner circumferential of the outer ring of the rolling bearing or the periphery of inner ring, circumferentially interval setting multiple is used for the raceways positioned to rolling element to rolling bearing, raceway is by rolling element together with inner ring or outer ring limitation, ensure rolling element and inner ring or the synchronism of outer ring, effectively prevent bearing from skidding；Because the positioned at intervals between rolling element is realized by the raceway being spaced, thus retainer need not be set, it is simple and reliable for structure, so as to mitigate weight, the resistance of bearing roller operating is reduced simultaneously, and compared with conventional bearings, the quantity of rolling element can minimize 3, increase bearing preload, reduce skidding rate.
Description
Technical field
The present invention relates to aero-engine technology field, more particularly to a kind of rolling bearing and aviation
Engine.
Background technology
The work characteristics of stick roller bearing is that rotating speed is high, load is small in aero-engine.Transported in high speed
During turning, the roller of stick roller bearing has disengaging inner race to connect under larger centrifugal action
Tactile trend.Because the rotor of aero-engine is made relatively gently, make to act on the footpath on bearing
It is small to load, to add make in some cases when aircraft does maneuvering flight and act on bearing
Radial load is smaller, or even zero load occurs, while the out-of-balance force of rotor in some cases can
Some radial loads acted on bearing are offset, the underloading or zero load of bearing is caused.This two side
The factor in face can cause that bearing becomes very little, even zero by the drawing force that friction is produced.This is just
Bearing will necessarily be caused to skid, skidding damage occur.Skidding damage can cause bearing initial failure,
Then the troubleshooting so that engine is given an encore in advance, not only causes very big economic loss, and influence
Outfield normally uses, influences flight safety.
Existing conventional scroll bearing arrangement as depicted in figs. 1 and 2, its typically by inner ring a2,
Outer ring a1, rolling element a4 and retainer a3 are constituted, and are arranged on the bearing rolling of inner ring a2 peripheries
Road is the complete circle structure type being along the circumferential direction distributed, and rolling element a4 is arranged on raceway,
Retainer a3 is uniformly distributed rolling element, prevents rolling element from coming off.
The measure that conventional prevention and control aero-engine stick roller bearing is skidded has following two sides
Face：
1st, using the method for increasing drawing force；By reduce clearance, retainer be positioned at inner ring,
To bearing applying " preloading ", using hollow roller, adjustment oil spout direction.
2nd, using the measure for reducing resistance；By reducing the viscous resistance of lubricating oil, using lightweight material
Expect retainer to prevent from acting on the axial load deflecting on ball bearing.
Existing rolling bearing is typically necessary setting retainer to position rolling element, ties
Structure is complicated.And above-mentioned measure can only to a certain extent prevent and control aero-engine roller
Bearing skids, and skid level has been alleviated, fault rate slightly has reduction, but the problem that bearing skids
Appoint and so exist, cure the symptoms, not the disease.
With continuing to develop for aero engine technology, the continuous improvement of thrust-weight ratio, base bearing
DN values are also improved constantly, from the 1.5 × 10 of early stage6Have developed to current 3 × 106, and will
To 4 × 106Development, this just brings the further increase of rolling element centrifugal force so that aviation is sent out
The prevention of motivation stick roller bearing slippage problems and control problem are more protruded.
The content of the invention
To overcome above technological deficiency, present invention solves the technical problem that being to provide a kind of axis of rolling
Hold and aero-engine, can effectively prevent bearing from skidding, it is simple and reliable for structure.
In order to solve the above technical problems, the invention provides a kind of rolling bearing, it includes：Outward
Circle, rolling element, inner ring and being circumferentially spaced is arranged on the periphery of the inner circumferential of outer ring or inner ring
Multiple raceways, a rolling element is provided with each raceway.
Further, multiple use are circumferentially interval with the inner circumferential of outer ring or the periphery of inner ring
In the lug boss for setting raceway.
Further, the height of projection of lug boss is 2mm~5mm.
Further, the radius of curvature of raceway is 0.515~0.555 times of the diameter of rolling element.
Further, rolling bearing is additionally included in and is arranged on the periphery of the inner circumferential of outer ring or inner ring
Rib, carry out axially position with to rolling element.
Further, raceway is in cylindrical concave, and cylindrical concave is made at the two ends of bearing axial direction
For rib carries out axially position to rolling element.
Further, rolling bearing is stick roller bearing, and rolling element is roller, the length side of raceway
To axial consistent with stick roller bearing.
Further, raceway is 3~12.
Further, rolling bearing is lubricated using fuel feeding under ring.
Present invention also offers a kind of aero-engine, it includes above-mentioned rolling bearing.
Thus, based on above-mentioned technical proposal, the invention provides a kind of rolling bearing, by
Circumferentially interval setting is multiple for right in the inner circumferential of the outer ring of the rolling bearing or the periphery of inner ring
The raceway that rolling element is positioned, raceway together with inner ring or outer ring limitation, protects rolling element
Card rolling element and inner ring or the synchronism of outer ring, effectively prevent bearing from skidding；Due to rolling element it
Between positioned at intervals be to be realized by the raceway being spaced, thus retainer need not be set, tie
Structure is simple and reliable, so that mitigate weight, while the resistance of bearing roller operating is reduced, and
Compared with conventional bearings, the quantity of rolling element can minimize 3, increase bearing preload,
Reduce skidding rate.The aero-engine that the present invention is provided correspondingly also has above-mentioned beneficial effect.
Brief description of the drawings
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the application
A part, schematic description and description of the invention be only used for explain the present invention, not
Constitute inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is the structural representation of existing rolling bearing；
Fig. 2 is the cross-sectional view at A-location A in Fig. 1；
Fig. 3 is the structural representation of rolling bearing of the present invention；
Fig. 4 is the cross-sectional view at B-B location in Fig. 3.
Specific embodiment
Below by drawings and Examples, technical scheme is done and is further retouched in detail
State.
Specific embodiment of the invention is for the ease of to design of the invention, the skill for being solved
Art problem, the technical characteristic for constituting technical scheme and the technique effect for bringing have further
It is bright.It should be noted that not constituted to limit of the invention for the explanation of these implementation methods
It is fixed.As long as additionally, the technical characteristic being related in the implementation method of present invention described below is each other
Between do not constitute conflict can just be mutually combined.
For the limitation of existing prevention and control aero-engine stick roller bearing skidding method at present
Property, the present invention devises a kind of rolling bearing for being particularly suitable for aero-engine operating mode, passes through
Circumferentially interval setting multiple is used in the inner circumferential of the outer ring of the rolling bearing or the periphery of inner ring
The raceway positioned to rolling element, raceway by together with rolling element and inner ring or outer ring limitation,
Ensure rolling element and inner ring or the synchronism of outer ring, effectively prevent bearing skidding aviation engine shaft
Hold slippage problems.
In one schematical embodiment of rolling bearing of the present invention, as shown in Figure 3 and Figure 4,
Rolling bearing includes：Outer ring 1, rolling element 2, inner ring 3 and it is circumferentially spaced and is arranged on outer ring
A rolling is provided with multiple raceways 4 in 1 inner circumferential or the periphery of inner ring 3, each raceway 4
Body 2.
In the schematical embodiment, by the inner circumferential or interior in the outer ring 1 of the rolling bearing
Circumferentially interval setting multiple is used for the raceways 4 positioned to rolling element 2 on the periphery of circle 3,
That is conventional integration complete cycle raceway design is changed into multiple local scattered roller path structures,
A rolling element 2 is set in each raceway 4, each raceway 4 is by each rolling element 2 and inner ring 3
It is excellent or outer ring 1 limits together, it is ensured that rolling element 2 and inner ring 3 or the synchronism of outer ring 1
Selection of land, raceway 4 is in the circumferential to set to ensure uniform force, positioning stablity reliability at equal intervals.
When raceway 4 is arranged in the inner circumferential of outer ring 1, the rolling rotated in raceway 4 is arranged on
Body 2 is not moved relative to outer ring 1；When raceway 4 is arranged on inner ring 3 as illustrated in fig. 3
Periphery on when, be arranged on the rolling element 2 rotated in raceway 4 and do not moved relative to inner ring 3
It is dynamic, effectively prevent the rolling element skidding of bearing.Due to the interval between multiple rolling elements 2
Positioning is realized by the multiple raceways 4 being spaced, it is already possible to keep apart rolling element 2
Come, therefore the retainer of conventional bearings can be cancelled, thus rolling bearing of the present invention is without setting guarantor
Frame is held, it is simple and reliable for structure, so that mitigate weight, while reducing the resistance of bearing roller operating
Power, and rolling bearing of the present invention is compared with conventional scroll bearing, using the stability of triangle,
The quantity of rolling element can minimize 3 can ensure being stably connected with for inner ring and outer ring,
So as to increase bearing preload, reduce skidding rate, certainly, the quantity of rolling element 2 can basis
It is actually needed to carry out rationally setting 3~12.
Wherein, rolling bearing can be ball bearing, and correspondingly rolling element 2 is ball, and raceway 4 is then
It is spherical concave surface, or roller bearing, correspondingly rolling element 2 is roller, in particular,
As shown in Figure 3 and Figure 4, rolling bearing is stick roller bearing, and rolling element 2 is roller, raceway 4
It is cylinder concave surface, its length direction is axial consistent with stick roller bearing, and it is particularly suited for aviation
Engine operating condition.Certain rolling bearing can also be other rolling bearings such as taper roll bearing,
Raceway can rationally be designed according to the self structure of rolling element.Preferably, the song of raceway 4
Rate radius is 0.515~0.555 times of the diameter of rolling element 2, in particular 0.525 times, is so set
The reason for meter is to leave prepsetting gap between raceway 4 and rolling element 2, it is ensured that bearing is being rotated
When rolling element 2 smoothly rotate in the raceway 4.
As the improvement to above-described embodiment, as shown in Figure 3 and Figure 4, in the inner circumferential of outer ring 1
Or multiple is circumferentially interval with the periphery of inner ring 3 for setting the lug bosses of raceway 4,
It is exactly the regional area thickening of the arrangement of raceway 4, roller path structure is in multiple local scattered petals
Formula raceway, it is ensured that raceway 4 can bear bigger active force, reliability and stability is obtained further
Lifting, from for another angle, equivalent to by the periphery of the inner circumferential of outer ring 1 or inner ring 3
On thinned without raceway area segments, ensure structural strength on the premise of reduce outer ring 1 or interior
The weight of circle 3, reduces the resistance of bearing roller operating, saves rapidoprint, meets existing
Light-weight design demand.Preferably, the height of projection of lug boss is 2mm~5mm, at this
In preferred number range, the regional area of raceway circumference uniform distribution is thickeied into 3mm or so, rolling
Road 4 is obtained in that enough support strengths, with reliability higher.
It is excellent in one, rolling bearing of the present invention in order to ensure that rolling element 2 comes off from the axial direction of bearing
In the embodiment of choosing, as shown in Figure 3 and Figure 4, rolling bearing is additionally included in and is arranged on outer ring 1
Inner circumferential or inner ring 3 periphery on rib, carry out axially position with to rolling element 2.Can be with
The rib with aperture with convexity or similar petal is set on the periphery of inner ring 3, it is now outer
The inner circumferential of circle 1 does not set rib；Can also be that with convexity or class is set in the inner circumferential of outer ring 1
The rib with aperture of floweriness valve, does not now set rib on the periphery of inner ring 3.Such as Fig. 3 and Tu
Shown in 4, raceway 4 is in cylindrical concave, and cylindrical concave can be made at the two ends of bearing axial direction
For rib carries out axially position to rolling element.
With developing rapidly for the Computerized Numerical Control processing technology for modernizing, the raceway of rolling bearing of the present invention
Can by numerically controlled processing equipment such as CNC milling machine, boring machine, grinding machine, five-axis machining center,
Electrical discharge machining etc. so that scattered raceway is easy to process in rolling bearing of the present invention.
Because rolling bearing will produce substantial amounts of heat when high speed rotates, thermal source comes from two aspects：
One is the friction internal in itself of the rotary motion of bearing and component and the frictional heat that produces；Secondly
The stirring heat that component is formed to lubricant generation stirring action when being rotation at a high speed.These heats
The lubricant of continuous circulation can only be leaned on to take away, will otherwise cause the rising of bearing operating temperatures.Cause
This, lubricant just has two main tasks herein：One is lubrication is played, during bearing working,
It is required that certain oil film thickness constantly to enough oil masses are injected between two contact surfaces can be formed,
To avoid the directly contact of two contact surfaces；The second is playing cooling effect, axle is kept the temperature at
In the range of corbel material and lubricant can bear.
Existing common lubricating system has drip lubrication, bath lubrication, splash lubrication, injection profit
Under cunning, fog lubrication, oil-air lubrication, ring lubrication etc., lubricated under current ring due to lubrication and it is cold
But effect preferably has and is increasingly widely applied trend.Structure according to rolling bearing of the present invention is special
Point, lubricates preferably by under ring, and lubricating oil is easily accessible Bearing inner, lubrication and cooling effect
It is good, while Bearing inner foreign matter is taken away, clean bearing.
Present invention also offers a kind of aero-engine, it includes support member and above-mentioned rolling
Dynamic bearing.Rolling bearing of the present invention is particularly suited for aero-engine, due to the axis of rolling of the present invention
Holding can effectively prevent bearing from skidding, simple and reliable for structure, correspondingly, aeroplane engine of the present invention
Machine also has above-mentioned Advantageous Effects, will not be repeated here.
Certainly, rolling bearing of the present invention can also be applied to high speed, the military, civilian aviation of underloading
Engine, unmanned plane, cruise missile, ground combustion machine or gas generator etc..
Above in association with embodiment be described in detail for embodiments of the present invention, but this hair
It is bright to be not limited to described implementation method.For a person skilled in the art, do not taking off
These implementation methods are carried out in the case of the principle of the invention and connotation various changes,
Modification, equivalence replacement and modification are still fallen within protection scope of the present invention.
Claims (10)
1. a kind of rolling bearing, including：Outer ring (1), rolling element (2) and inner ring (3)
Characterized in that, also including being circumferentially spaced the inner circumferential or described interior for being arranged on the outer ring (1)
An institute is provided with the multiple raceways (4) enclosed on the periphery of (3), each described raceway (4)
State rolling element (2).
2. rolling bearing according to claim 1, it is characterised in that in the outer ring
(1) circumferentially it is interval with inner circumferential or the periphery of the inner ring (3) multiple for setting
The lug boss of the raceway (4).
3. rolling bearing according to claim 2, it is characterised in that the lug boss
Height of projection be 2mm~5mm.
4. rolling bearing according to claim 1, it is characterised in that the raceway (4)
Radius of curvature be 0.515~0.555 times of diameter of the rolling element (2).
5. rolling bearing according to claim 1, it is characterised in that be additionally included in and set
The rib in the inner circumferential of the outer ring (1) or the periphery of the inner ring (3) is put, with to institute
Stating rolling element (2) carries out axially position.
6. rolling bearing according to claim 5, it is characterised in that the raceway (4)
In cylindrical concave, the cylindrical concave is at the axial two ends of bearing as the rib to rolling
Kinetoplast carries out axially position.
7. the rolling bearing according to any one of claim 1~6, it is characterised in that institute
Rolling bearing is stated for stick roller bearing, the rolling element (2) is roller, the raceway (4)
Length direction is axial consistent with the stick roller bearing.
8. the rolling bearing according to any one of claim 1~6, it is characterised in that institute
It is 3~12 to state raceway (4).
9. the rolling bearing according to any one of claim 1~6, it is characterised in that institute
Rolling bearing is stated to be lubricated using fuel feeding under ring.
10. a kind of aero-engine, it is characterised in that including any one of claim 1~9 institute
The rolling bearing stated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510933193.0A CN106884873B (en) | 2015-12-15 | 2015-12-15 | Rolling bearing and aero-engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510933193.0A CN106884873B (en) | 2015-12-15 | 2015-12-15 | Rolling bearing and aero-engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106884873A true CN106884873A (en) | 2017-06-23 |
| CN106884873B CN106884873B (en) | 2019-05-07 |
Family
ID=59173694
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510933193.0A Active CN106884873B (en) | 2015-12-15 | 2015-12-15 | Rolling bearing and aero-engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106884873B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102748121A (en) * | 2012-06-27 | 2012-10-24 | 北京航空航天大学 | Two-stage turbocharger for aviation piston engine |
| CN102877936A (en) * | 2011-05-04 | 2013-01-16 | 张庆华 | Flywheel mid-set type piston engine |
| CN104329370A (en) * | 2014-09-03 | 2015-02-04 | 洛阳轴研科技股份有限公司 | Four-point contact type linear motion ball bearing for spaceflight |
| JP2015094402A (en) * | 2013-11-11 | 2015-05-18 | 日本精工株式会社 | Roller bearing |
| CN204419849U (en) * | 2014-07-29 | 2015-06-24 | 江志富 | The shockproof bearing of a kind of lathe |
-
2015
- 2015-12-15 CN CN201510933193.0A patent/CN106884873B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102877936A (en) * | 2011-05-04 | 2013-01-16 | 张庆华 | Flywheel mid-set type piston engine |
| CN102748121A (en) * | 2012-06-27 | 2012-10-24 | 北京航空航天大学 | Two-stage turbocharger for aviation piston engine |
| JP2015094402A (en) * | 2013-11-11 | 2015-05-18 | 日本精工株式会社 | Roller bearing |
| CN204419849U (en) * | 2014-07-29 | 2015-06-24 | 江志富 | The shockproof bearing of a kind of lathe |
| CN104329370A (en) * | 2014-09-03 | 2015-02-04 | 洛阳轴研科技股份有限公司 | Four-point contact type linear motion ball bearing for spaceflight |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106884873B (en) | 2019-05-07 |
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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 | ||
| CB02 | Change of applicant information |
Address after: 200241 Minhang District Lianhua Road, Shanghai, No. 3998 Applicant after: China Hangfa commercial aviation engine limited liability company Address before: 200241 Minhang District Lianhua Road, Shanghai, No. 3998 Applicant before: AVIC Commercial Aircraft Engine Co.,Ltd. |
|
| CB02 | Change of applicant information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Liang Xiao Inventor after: Zhu Xige Inventor after: Li Lin Inventor after: Ren Jiahai Inventor after: Ji Yinze Inventor before: Liang Xiao Inventor before: Zhu Xige Inventor before: Li Lin Inventor before: Ren Jiahai Inventor before: Ji Yinze |
|
| CB03 | Change of inventor or designer information | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190809 Address after: Room 301, No. 1, 600 Xinyuan South Road, Lingang New Town, Pudong New Area, Shanghai, 20106 Co-patentee after: China Hangfa commercial aviation engine limited liability company Patentee after: China Hangfa Shanghai Aero Engine Manufacturing Co. Ltd. Address before: 200241 Minhang District Lianhua Road, Shanghai, No. 3998 Patentee before: China Hangfa commercial aviation engine limited liability company |
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| TR01 | Transfer of patent right |