CN106352016A - Resistance increasing type squeeze film damper with bosses on outer ring or shaft neck - Google Patents
Resistance increasing type squeeze film damper with bosses on outer ring or shaft neck Download PDFInfo
- Publication number
- CN106352016A CN106352016A CN201611006318.6A CN201611006318A CN106352016A CN 106352016 A CN106352016 A CN 106352016A CN 201611006318 A CN201611006318 A CN 201611006318A CN 106352016 A CN106352016 A CN 106352016A
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- CN
- China
- Prior art keywords
- outer ring
- boss
- antivibrator
- axle journal
- squeeze film
- 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
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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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/10—Suppression of vibrations in rotating systems by making use of members moving with the system
- F16F15/12—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Mechanical Engineering (AREA)
- Vibration Prevention Devices (AREA)
Abstract
Provided is a resistance increasing type squeeze film damper with bosses an on outer ring or a shaft neck. The damper comprises a damper shaft neck and a damper outer ring, the shaft neck is sleeved with the outer ring, an oil film clearance is reserved between the shaft neck and the outer ring, an oil supply groove and an oil supply hole are formed in the middle of the outer ring, and the oil film clearance is communicated with the oil supply hole through the oil supply groove; a plurality of bosses are arranged on the inner side wall of the outer ring or the outer surface of the shaft neck and evenly arranged in the circumferential direction of the shaft neck or the outer ring; the bosses are parallel to the axial central line of the shaft neck or the outer ring in the length direction; the bosses are axially communicated on the outer surface of the shaft neck or the inner side wall of the outer ring respectively; the top surface of each boss is an arc surface, and the circle center of each boss is located on the axial central line of the shaft neck or the axial central line of the outer ring. After an oil film is formed between the damper outer ring and the damper shaft neck, oil film pressure distribution is not uniform due to the bosses, the tangential force of the oil film can be increased, then the damping force of the oil film is increased, and the vibration reduction efficiency of the squeeze film damper is finally improved.
Description
Technical field
The invention belongs to squeeze film damper technical field, the resistance of the increasing with boss of more particularly to a kind of outer ring or axle journal
Formula squeeze film damper.
Background technology
Squeeze film damper is a kind of vibroshock for engine rotor, and the field that it is related to is very extensive,
Particularly in Aeronautics and Astronautics field, squeeze film damper has particularly important effect, uses in squeeze film damper
During, also need to require in the face of the rigorous rigid condition of technology.
The vibration attenuation mechanism of squeeze film damper is the vibration absorbing engine rotor using oil film, and oil film produces oil film
Damping, and the damping at engine rotor supporting system mainly produces by oil film, therefore, this parameter of oil-film damping for
For motivation overall performance of crucial importance if it is possible to suitable raising oil-film damping, for improving squeeze film damper
Damping efficiency is particularly important.
At present, the oil film structure that squeeze film damper of practical application has been formed belongs to annular, relies on circle
Annular oil film structure is difficult to improve oil-film damping parameter further it is desirable to improve the damping efficiency of squeeze film damper further
Also extremely difficult.
Content of the invention
The problem existing for prior art, the present invention provides a kind of outer ring or the resistance increasing type squeeze film with boss for the axle journal
Antivibrator, under conditions of not changing conventional extruded film damper overall structure, is only carried out to antivibrator outer ring or axle journal
Structure of modification, effectively increases the oil-film damping of squeeze film damper, and further increases subtracting of squeeze film damper
Shake efficiency.
To achieve these goals, the present invention adopts the following technical scheme that a kind of outer ring or axle journal resistance increasing type with boss
Squeeze film damper, including antivibrator axle journal and antivibrator outer ring, described antivibrator outer ring is sleeved on antivibrator axle journal, resistance
Leave oil clearance between Buddhist nun's device outer ring and antivibrator axle journal, the middle part of antivibrator outer ring be provided with oil supply tank and oil supplying hole,
And oil supply tank is circumferentially disposed along antivibrator outer ring medial wall, described oil clearance is communicated with oil supplying hole by oil supply tank；It is special
Point is: boss is provided with the medial wall of described antivibrator outer ring, or described antivibrator axle journal outer surface be provided with convex
Platform.
When being provided with boss on the medial wall of antivibrator outer ring, boss quantity is some, and some boss are along antivibrator outer ring
Circumference is uniformly arranged.
When being provided with boss on the medial wall of antivibrator outer ring, the boss axial direction with antivibrator outer ring in the longitudinal direction
Centrage is parallel.
When being provided with boss on the medial wall of antivibrator outer ring, boss is axially to pass through on the medial wall of antivibrator outer ring
Logical.
When being provided with boss on the medial wall of antivibrator outer ring, boss top surface is arc surface, and the center of circle position of arc surface
On the longitudinal center line of antivibrator outer ring.
When the outer surface of antivibrator axle journal is provided with boss, boss quantity is some, and some boss are along antivibrator axle journal week
To being uniformly arranged.
When the outer surface of antivibrator axle journal is provided with boss, boss in the longitudinal direction with the axial direction of antivibrator axle journal in
Heart line is parallel.
When the outer surface of antivibrator axle journal is provided with boss, boss is axially to pass through on the outer surface of antivibrator axle journal
Logical.
When the outer surface of antivibrator axle journal is provided with boss, boss top surface is arc surface, and the center of circle of arc surface is located at
On the longitudinal center line of antivibrator axle journal.
Beneficial effects of the present invention:
Present invention firstly provides on the medial wall of antivibrator outer ring or antivibrator axle journal outer surface increase boss side
Case, after forming oil film, due to the presence of boss, can lead to oil film pressure distribution to go out between antivibrator outer ring and antivibrator axle journal
Existing inequality, oil film tangential force will increase, and then so that oil-film damping is improved, and finally improves subtracting of squeeze film damper
Shake efficiency.
Brief description
Fig. 1 is a kind of outer ring or the resistance increasing type squeeze film damper with boss for the axle journal (outer ring band boss) of the present invention
Structural representation；
Fig. 2 is the a-a sectional view of Fig. 1；
Fig. 3 is i portion enlarged drawing in Fig. 2；
Fig. 4 is a kind of outer ring or the resistance increasing type squeeze film damper with boss for the axle journal (axle journal band boss) of the present invention
Structural representation；
Fig. 5 is the b-b sectional view of Fig. 4；
Fig. 6 is ii portion enlarged drawing in Fig. 5；
Fig. 7 is the change curve with eccentricity for the oil-film damping；
Fig. 8 is the oil film pressure distribution figure of traditional squeeze film damper；
Fig. 9 is the oil film pressure distribution figure of the squeeze film damper (outer ring band boss) of the present invention；
Figure 10 is the oil film pressure distribution figure of the squeeze film damper (axle journal band boss) of the present invention；
In figure, 1 antivibrator axle journal, 2 antivibrator outer rings, 3 oil clearances, 4 oil supply tanks, 5 oil supplying holes, 6
Boss.
Specific embodiment
The present invention is described in further detail with specific embodiment below in conjunction with the accompanying drawings.
As shown in figs. 1 to 6, a kind of outer ring or the resistance increasing type squeeze film damper with boss for the axle journal, including damper shaft
Neck 1 and antivibrator outer ring 2, described antivibrator outer ring 2 is sleeved on antivibrator axle journal 1, antivibrator outer ring 2 and antivibrator axle journal 1
Between leave oil clearance 3, the middle part of antivibrator outer ring 2 is provided with oil supply tank 4 and oil supplying hole 5, and oil supply tank 4 is along damping
Device outer ring 2 medial wall is circumferentially disposed, and described oil clearance 3 is communicated with oil supplying hole 5 by oil supply tank 4；In described antivibrator outer ring 2
Medial wall on be provided with boss 6, or the outer surface of described antivibrator axle journal 1 is provided with boss 6.
When being provided with boss 6 on the medial wall of antivibrator outer ring 2, boss 6 quantity is some, and some boss 6 is along antivibrator
Outer ring 2 circumference is uniformly arranged.
When being provided with boss 6 on the medial wall of antivibrator outer ring 2, boss 6 in the longitudinal direction with antivibrator outer ring 2
Longitudinal center line is parallel.
When being provided with boss 6 on the medial wall of antivibrator outer ring 2, boss 6 is axle on the medial wall of antivibrator outer ring 2
To insertion.
When being provided with boss 6 on the medial wall of antivibrator outer ring 2, boss 6 top surface is arc surface, and the center of circle of arc surface
On the longitudinal center line of antivibrator outer ring 2.
When the outer surface of antivibrator axle journal 1 is provided with boss 6, boss 6 quantity is some, and some boss 6 is along damper shaft
Neck 1 circumference is uniformly arranged.
When the outer surface of antivibrator axle journal 1 is provided with boss 6, boss 6 axle with antivibrator axle journal 1 in the longitudinal direction
Parallel to centrage.
When the outer surface of antivibrator axle journal 1 is provided with boss 6, boss 6 is axially on the outer surface of antivibrator axle journal 1
Insertion.
When the outer surface of antivibrator axle journal 1 is provided with boss 6, boss 6 top surface is arc surface, and the center of circle position of arc surface
On the longitudinal center line of antivibrator axle journal 1.
Squeeze film damper in order to preferably verify the present invention can effectively improve oil-film damping, specifically employs
Ansys simulation calculation software has carried out oil film respectively to the squeeze film damper of traditional squeeze film damper and the present invention
The simulation calculation of damping.The squeeze film damper of traditional squeeze film damper and the present invention has identical structure ginseng
Number, structural parameters are as follows:
Table 1 structural parameters (unit: mm)
| Antivibrator journal diameter | Antivibrator race diameter | Antivibrator axial width | Fuel feeding well width | Oil supply tank diameter | Fuel feeding bore dia |
| 43 | 43.3 | 18 | 4 | 43.7 | 0.8 |
In the squeeze film damper of the present invention, taking the boss everywhere 6 being uniformly arranged as a example, the top surface arc length of boss 6
Corresponding center of circle angle is 10 degree, and the radial height of boss 6 is 0.05mm.
Understand, the motion expression formula of antivibrator axle journal 1 is:
X=e cos (ω t)
Y=e sin (ω t)
Wherein, e=c ε, in formula, e is antivibrator axle journal eccentric throw, and c is oil clearance, and ε is eccentricity, and ω is revolution
Angular velocity, in the present embodiment, revolution angular velocity is 471rad/s.
The lubricating oil parameter participating in simulation calculation is: lubricating oil density is 885kg/m, and oil viscosity is 0.00482pa s, enters
Mouth flow is 90ml/min, and export boundary condition pressure is atmospheric pressure.
Understand, the computing formula of oil-film damping is:
In formula, c is oil-film damping, and ft is oil film tangential force suffered by antivibrator axle journal, and e is antivibrator axle journal eccentric throw, ω
For the angular velocity that revolves round the sun.
The change curve with eccentricity for the oil-film damping be can get by ansys simulation calculation software, as shown in Figure 7.In figure
In it should be apparent that the squeeze film damper of the present invention is compared with traditional squeeze film damper, oil-film damping obtains
To significantly improving.
In order to verify the presence because of boss for the squeeze film damper of the present invention further, oil film pressure distribution can be made to go out
Existing uneven situation, has simulated the squeeze film damper of the present invention and traditional respectively by ansys simulation calculation software
The oil film pressure distribution figure of squeeze film damper, specifically as shown in figs. 8-10.In in figure it should be apparent that the present invention
Squeeze film damper oil film pressure distribution can be made uneven, further according to vortex increase resistance principle understand, oil film tangential force will
Can increase, and then so that oil-film damping is improved, finally improve the damping efficiency of squeeze film damper.
Scheme in embodiment is simultaneously not used to limit the scope of patent protection of the present invention, all without departing from the present invention do etc.
Effect is implemented or is changed, and is both contained in the scope of the claims of this case.
Claims (9)
1. a kind of outer ring or the resistance increasing type squeeze film damper with boss for the axle journal, including antivibrator axle journal and antivibrator outer ring,
Described antivibrator outer ring is sleeved on antivibrator axle journal, leaves oil clearance between antivibrator outer ring and antivibrator axle journal, in resistance
The middle part of Buddhist nun's device outer ring is provided with oil supply tank and oil supplying hole, and oil supply tank is circumferentially disposed along antivibrator outer ring medial wall, described
Oil clearance is communicated with oil supplying hole by oil supply tank；It is characterized in that: it is provided with convex on the medial wall of described antivibrator outer ring
Platform, or the outer surface of described antivibrator axle journal is provided with boss.
2. a kind of outer ring according to claim 1 or the resistance increasing type squeeze film damper with boss for the axle journal, its feature exists
In: when being provided with boss on the medial wall of antivibrator outer ring, boss quantity is some, and some boss are along antivibrator outer ring circumference all
Cloth is arranged.
3. a kind of outer ring according to claim 1 or the resistance increasing type squeeze film damper with boss for the axle journal, its feature exists
In: when being provided with boss on the medial wall of antivibrator outer ring, the boss axial centre with antivibrator outer ring in the longitudinal direction
Line is parallel.
4. a kind of outer ring according to claim 1 or the resistance increasing type squeeze film damper with boss for the axle journal, its feature exists
In: when being provided with boss on the medial wall of antivibrator outer ring, boss on the medial wall of antivibrator outer ring be axially through.
5. a kind of outer ring according to claim 1 or the resistance increasing type squeeze film damper with boss for the axle journal, its feature exists
In: when being provided with boss on the medial wall of antivibrator outer ring, boss top surface is arc surface, and the center of circle of arc surface is located at damping
On the longitudinal center line of device outer ring.
6. a kind of outer ring according to claim 1 or the resistance increasing type squeeze film damper with boss for the axle journal, its feature exists
In: when the outer surface of antivibrator axle journal is provided with boss, boss quantity is some, and some boss are uniform along antivibrator axle journal circumference
Setting.
7. a kind of outer ring according to claim 1 or the resistance increasing type squeeze film damper with boss for the axle journal, its feature exists
In: when the outer surface of antivibrator axle journal is provided with boss, the boss longitudinal center line with antivibrator axle journal in the longitudinal direction
Parallel.
8. a kind of outer ring according to claim 1 or the resistance increasing type squeeze film damper with boss for the axle journal, its feature exists
In: when the outer surface of antivibrator axle journal is provided with boss, boss on the outer surface of antivibrator axle journal be axially through.
9. a kind of outer ring according to claim 1 or the resistance increasing type squeeze film damper with boss for the axle journal, its feature exists
In: when the outer surface of antivibrator axle journal is provided with boss, boss top surface is arc surface, and the center of circle of arc surface is located at antivibrator
On the longitudinal center line of axle journal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611006318.6A CN106352016A (en) | 2016-11-16 | 2016-11-16 | Resistance increasing type squeeze film damper with bosses on outer ring or shaft neck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611006318.6A CN106352016A (en) | 2016-11-16 | 2016-11-16 | Resistance increasing type squeeze film damper with bosses on outer ring or shaft neck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106352016A true CN106352016A (en) | 2017-01-25 |
Family
ID=57862496
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611006318.6A Pending CN106352016A (en) | 2016-11-16 | 2016-11-16 | Resistance increasing type squeeze film damper with bosses on outer ring or shaft neck |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106352016A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4392751A (en) * | 1980-06-04 | 1983-07-12 | Hitachi, Ltd. | Damped bearing device |
| CN1360647A (en) * | 1999-07-12 | 2002-07-24 | 梅明格-Iro股份有限公司 | Bearing system, especially for yarn feed devices |
| US20090103846A1 (en) * | 2002-02-28 | 2009-04-23 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Decoupling device for mounting a shaft on a base and radial ondular washer |
| US20110058759A1 (en) * | 2009-09-10 | 2011-03-10 | Jason Herborth | Bearing support flexible ring |
| US20110064340A1 (en) * | 2009-09-17 | 2011-03-17 | Loc Quang Duong | Method and apparatus for stabilizing a squeeze film damper for a rotating machine |
| CN102338158A (en) * | 2011-09-15 | 2012-02-01 | 西安交通大学 | Elastic ring and integral-type elastic ring damper utilizing same |
| CN204113915U (en) * | 2014-09-04 | 2015-01-21 | 中国南方航空工业(集团)有限公司 | Bearing unit and there is its gas turbine |
| CN205350045U (en) * | 2015-05-19 | 2016-06-29 | 罗立峰 | Gaseous journal bearing of slot type dynamic pressure |
| CN206206489U (en) * | 2016-11-16 | 2017-05-31 | 沈阳航空航天大学 | A kind of resistance increasing type squeeze film damper of outer ring or axle journal with boss |
-
2016
- 2016-11-16 CN CN201611006318.6A patent/CN106352016A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4392751A (en) * | 1980-06-04 | 1983-07-12 | Hitachi, Ltd. | Damped bearing device |
| CN1360647A (en) * | 1999-07-12 | 2002-07-24 | 梅明格-Iro股份有限公司 | Bearing system, especially for yarn feed devices |
| US20090103846A1 (en) * | 2002-02-28 | 2009-04-23 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Decoupling device for mounting a shaft on a base and radial ondular washer |
| US20110058759A1 (en) * | 2009-09-10 | 2011-03-10 | Jason Herborth | Bearing support flexible ring |
| US20110064340A1 (en) * | 2009-09-17 | 2011-03-17 | Loc Quang Duong | Method and apparatus for stabilizing a squeeze film damper for a rotating machine |
| CN102338158A (en) * | 2011-09-15 | 2012-02-01 | 西安交通大学 | Elastic ring and integral-type elastic ring damper utilizing same |
| CN204113915U (en) * | 2014-09-04 | 2015-01-21 | 中国南方航空工业(集团)有限公司 | Bearing unit and there is its gas turbine |
| CN205350045U (en) * | 2015-05-19 | 2016-06-29 | 罗立峰 | Gaseous journal bearing of slot type dynamic pressure |
| CN206206489U (en) * | 2016-11-16 | 2017-05-31 | 沈阳航空航天大学 | A kind of resistance increasing type squeeze film damper of outer ring or axle journal with boss |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170125 |