CN109764088B - A kind of squeeze film thickness adjusting apparatus - Google Patents
A kind of squeeze film thickness adjusting apparatus Download PDFInfo
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- CN109764088B CN109764088B CN201910018347.1A CN201910018347A CN109764088B CN 109764088 B CN109764088 B CN 109764088B CN 201910018347 A CN201910018347 A CN 201910018347A CN 109764088 B CN109764088 B CN 109764088B
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- oil film
- bushing
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- wall thickness
- bearing
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Abstract
The invention discloses a kind of squeeze film thickness adjusting apparatus, including oil film bushing and adjustment ring.Between fulcrum bearing and elastic bearing, outer wall separates oil film bushing with fulcrum bearing inner wall, forms squeeze film, and inner wall is contacted with elastic bearing outer wall；Adjustment ring is connected by screw to fulcrum bearing and oil film bushing between fulcrum bearing and oil film bushing.Oil film bushing has different wall thickness in the present invention, and squeeze film thickness can be continuously adjusted when not dismounting main parts size after cooperating with adjustment ring, easy to adjust.In addition, can be achieved with the adjusting of squeeze film different-thickness in the present invention using an oil film bushing, does not need to process multiple oil film bushings, reduce costs.
Description
Technical field
The present invention relates to rotary machine rotor field more particularly to a kind of squeeze film thickness adjusting apparatus.
Background technique
Squeeze film damper is the common vibration-proof structure of the rotating machineries such as aero-engine, can effectively inhibit the mistake of rotor
Big vibration is avoided turning stator touching and be rubbed, therefore understands squeeze film damper characteristic for reducing the excessive vibration of rotating machinery, is avoided
Mechanical breakdown occurs to be of great importance.Squeeze film thickness has very the dynamic characteristic and damping property of squeeze film damper
It is big to influence.
In the research of the influence factor of existing squeeze film damper characteristic, the multiple components of replacement, a side are generally required
Face causes processing cost higher, and on the other hand frequently disassembly and assembly components will lead to original assembly relation and are changed, no
Squeeze film parameter can be controlled well, cause test result undesirable.It would therefore be highly desirable to solve above-mentioned technical problem.
Summary of the invention
Goal of the invention: for that cannot continuously adjust squeeze film thickness in the prior art, frequently dismounting components leads to original
The problem of assembly relation come changes, the present invention provides a kind of squeeze film thickness adjusting apparatus, can not dismount mainly
Continuously adjusting for squeeze film different-thickness is realized in the case where components, it is easy to adjust.
Technical solution: to achieve the purpose of the present invention, the technical scheme adopted by the invention is that: a kind of squeeze film thickness
Regulating device, including oil film bushing and adjustment ring, the device are mounted in fulcrum bearing.Wherein, elastic bearing passes through screw and branch
Hold seat connection；Between elastic bearing and rotor, housing washer contacts rolling bearing with elastic bearing inner wall, inner ring with
Rotor contact；Rolling bearing is fixed by locking nut and rotor；Oil film bushing between fulcrum bearing and elastic bearing, outside
Wall is separated with fulcrum bearing inner wall, forms squeeze film, and inner wall is contacted with elastic bearing outer wall；Adjustment ring is located at fulcrum bearing and oil
Between film bushing, adjustment ring and fulcrum bearing are connected by screw to, and oil film bushing and adjustment ring are connected by screw to.
Engaging lug is arranged in the oil film bushing, and engaging lug is fixed by screws in adjustment ring.The oil film bushing has
Different wall thickness, axial smaller away from the remoter wall thickness of engaging lug, the type of wall thickness is identical as the type for the squeeze film thickness that need to be adjusted.
The axial length of wall thickness Minimum Area is greater than the axial length of the corresponding squeeze film of wall thickness Minimum Area in the oil film bushing,
The axial length of non-wall thickness Minimum Area is identical, and the axial direction for being greater than or equal to the corresponding squeeze film of non-wall thickness Minimum Area is long
Degree.
The adjustment ring is provided with several ladder groups, such as the first ladder group and the second ladder group, ladder in each ladder group
Quantity it is identical as the species number for the squeeze film thickness that need to be adjusted, be provided with threaded hole on each ladder.The adjustment ring is every
The axial direction of wall thickness Minimum Area in axial distance and oil film bushing in a ladder group between the first high ladder and the second high ladder
Length is identical, the axial distance in each ladder group in addition to the first high ladder between other adjacent steps and non-wall thickness Minimum Area
Axial length it is identical.
The utility model has the advantages that compared with prior art, technical solution of the present invention has following advantageous effects:
(1) oil film bushing has different wall thickness in the present invention, can not dismount main parts size after cooperating with adjustment ring
In the case where continuously adjust squeeze film thickness, it is easy to adjust；
(2) adjusting that can be achieved with squeeze film different-thickness in the present invention using an oil film bushing, does not need to process
Multiple oil film bushings, reduce costs；
(3) present invention is easy to use, and versatility is stronger, is convenient for marketing.
Detailed description of the invention
Fig. 1 is a kind of squeeze film thickness adjusting apparatus overall assembling cross-sectional view of the present invention；
Fig. 2 is a kind of squeeze film thickness adjusting apparatus overall assembling explosive view of the present invention；
Fig. 3 is oil film bush structure figure；
Fig. 4 is adjustment ring structure chart.
In figure, 1. fulcrum bearings, 2. elastic bearings, 3. rotors, 4. rolling bearings, 5. locking nuts, 6. oil film bushings, 601.
Engaging lug, 602. wall thickness maximum regions, the second largest region of 603. wall thickness, 604. wall thickness Minimum Areas, 7. adjustment rings, 701. first
Ladder group, 702. second ladder groups, 703. threaded holes, 8. squeeze films.
Specific embodiment
Technical solution of the present invention is described further with reference to the accompanying drawing.
As depicted in figs. 1 and 2, a kind of squeeze film thickness adjusting apparatus of the present invention, including oil film bushing 6 and adjustment ring 7,
The device is mounted in fulcrum bearing 1；Elastic bearing 2 is connect by screw with fulcrum bearing 1；Rolling bearing 4 is located at 2 He of elastic bearing
Between rotor 3,4 outer ring of rolling bearing is contacted with 2 inner wall of elastic bearing, and inner ring is contacted with rotor 3；Rolling bearing 4 passes through locking
Nut 5 and rotor 3 are fixed；Between fulcrum bearing 1 and elastic bearing 2, outer wall separates oil film bushing 6 with 1 inner wall of fulcrum bearing,
Squeeze film 8 is formed, inner wall is contacted with 2 outer wall of elastic bearing；Adjustment ring 7 is adjusted between fulcrum bearing 1 and oil film bushing 6
The domain 7 and fulcrum bearing 1 are connected by screw to, and oil film bushing 6 and adjustment ring 7 are connected by screw to.
As shown in Figure 1, Figure 2 and Figure 3, oil film bushing 6 is equipped with 2 engaging lugs 601, and is fixed by screws in adjustment ring 7
On；Oil film bushing 6 has different wall thickness, axial smaller away from the remoter wall thickness of engaging lug 601, can be according to the squeeze film 8 that need to be adjusted
Different types of wall thickness is arranged in the type of thickness, and wall thickness type is identical as the type for 8 thickness of squeeze film that need to be adjusted.Wherein,
The axial length of non-wall thickness Minimum Area in oil film bushing 6 is all identical, is formed by the axial length of oil film thickness 8 also phase
Together.
Totally 3 kinds of different wall thickness in legend are that wall thickness maximum region 602, the second largest region 603 of wall thickness and wall thickness are minimum respectively
Region 604；The axial length of wall thickness Minimum Area 604 is greater than the corresponding squeeze film of wall thickness Minimum Area 604 in oil film bushing 6
The axial length of 8 axial length, the second largest region 603 of wall thickness maximum region 602 and wall thickness is identical, is equal to wall thickness maximum region
602, the axial length of the corresponding squeeze film 8 in the second largest region 603 of wall thickness.
As shown in Figure 1, Figure 2 and Figure 4, adjustment ring 7 is provided with the first ladder group 701 and the second ladder group 702, and ladder group can
Multiple groups to be arranged according to actual needs.Each ladder group contains 3 ladders, ladder quantity and the squeeze film that need to be adjusted in legend
The species number of 8 thickness is identical, and threaded hole 703 is provided on each ladder；First high ladder and the second high-order in each ladder group
Axial distance between ladder is identical as the axial length of wall thickness Minimum Area 604 in oil film bushing, and the second high ladder and third are high
Axial distance between ladder is identical as the axial length of wall thickness maximum region 602, the second largest region 603 of wall thickness.
When adjusting squeeze film thickness, the screw for connecting oil film bushing 6 and adjustment ring 7 is unloaded first, it secondly will connection
The screw of fulcrum bearing 1 and adjustment ring 7 unloads, and keeps oil film bushing 6 motionless again, and rotation adjustment ring 7 makes engaging lug 601 and adjustment
The threaded hole 703 of next ladder is corresponding and fixed in ring 7, finally assembles all screws unloaded.
Embodiments of the present invention are described in detail in conjunction with attached drawing above, but the present invention is not limited to described reality
Apply mode.For those of ordinary skill in the art, in the range of the principle of the present invention and technical idea, to these implementations
Mode carries out a variety of variations, modification, replacement and deformation and still falls in protection scope of the present invention.
Claims (3)
1. a kind of squeeze film thickness adjusting apparatus, which is characterized in that including oil film bushing (6) and adjustment ring (7), device peace
On fulcrum bearing (1)；Elastic bearing (2) is connect by screw with fulcrum bearing (1)；Rolling bearing (4) is located at elastic bearing (2)
Between rotor (3), rolling bearing (4) outer ring is contacted with elastic bearing (2) inner wall, and inner ring is contacted with rotor (3)；Rolling bearing
(4) fixed by locking nut (5) and rotor (3)；Oil film bushing (6) is located between fulcrum bearing (1) and elastic bearing (2),
Outer wall is separated with fulcrum bearing (1) inner wall, is formed squeeze film (8), and inner wall is contacted with elastic bearing (2) outer wall；Adjustment ring (7)
Between fulcrum bearing (1) and oil film bushing (6), adjustment ring (7) and fulcrum bearing (1) are connected by screw to, oil film bushing (6) and
Adjustment ring (7) is connected by screw to；Engaging lug (601) are arranged in the oil film bushing (6), and engaging lug (601) is fixed by screw
On adjustment ring (7), the oil film bushing (6) has different wall thickness, axial, wall thickness smaller away from the remoter wall thickness of engaging lug (601)
Type it is identical as the type of squeeze film (8) thickness that need to be adjusted, the adjustment ring (7) is provided with several ladder groups, each
The quantity of ladder is identical as the species number of squeeze film (8) thickness that need to be adjusted in ladder group, is provided with screw thread on each ladder
Hole (703).
2. a kind of squeeze film thickness adjusting apparatus according to claim 1, which is characterized in that the oil film bushing (6)
The axial length of middle wall thickness Minimum Area is greater than the axial length of the corresponding squeeze film of wall thickness Minimum Area (8), and non-wall thickness is most
The axial length of zonule is identical, and is greater than or equal to the axial length of the corresponding squeeze film (8) of non-wall thickness Minimum Area.
3. a kind of squeeze film thickness adjusting apparatus according to claim 1 or 2, which is characterized in that the adjustment ring (7)
Each ladder group in wall thickness Minimum Area in axial distance between the first high ladder and the second high ladder and oil film bushing (6)
Axial length it is identical, axial distance in each ladder group in addition to the first high ladder between other adjacent steps and non-wall thickness are most
The axial length of zonule is identical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910018347.1A CN109764088B (en) | 2019-01-09 | 2019-01-09 | A kind of squeeze film thickness adjusting apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910018347.1A CN109764088B (en) | 2019-01-09 | 2019-01-09 | A kind of squeeze film thickness adjusting apparatus |
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| Publication Number | Publication Date |
|---|---|
| CN109764088A CN109764088A (en) | 2019-05-17 |
| CN109764088B true CN109764088B (en) | 2019-11-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910018347.1A Active CN109764088B (en) | 2019-01-09 | 2019-01-09 | A kind of squeeze film thickness adjusting apparatus |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2769611Y (en) * | 2004-11-04 | 2006-04-05 | 北京航空航天大学 | Adaptive squeezing oil film damper with metal rubber external ring |
| JP2014020461A (en) * | 2012-07-18 | 2014-02-03 | Jtekt Corp | Bearing device for turbocharger |
| CN105675276A (en) * | 2016-01-13 | 2016-06-15 | 中国航空动力机械研究所 | Device and method for testing vibration damping property of elastic support extruded oil film damper |
| CN106907355A (en) * | 2017-04-28 | 2017-06-30 | 中国航发湖南动力机械研究所 | A kind of elastic bearing squeeze film damper |
| CN106989917A (en) * | 2017-06-01 | 2017-07-28 | 中国航发湖南动力机械研究所 | Flexibly support the dynamic stiffness measurement device and its measuring method of squeeze film damper |
| CN108487949A (en) * | 2018-06-28 | 2018-09-04 | 西安交通大学 | A kind of aero-engine adaptive damping squeeze film damper |
| CN109058380A (en) * | 2018-07-31 | 2018-12-21 | 中国航发湖南动力机械研究所 | Mouse cage bullet branch metal-rubber damper |
-
2019
- 2019-01-09 CN CN201910018347.1A patent/CN109764088B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2769611Y (en) * | 2004-11-04 | 2006-04-05 | 北京航空航天大学 | Adaptive squeezing oil film damper with metal rubber external ring |
| JP2014020461A (en) * | 2012-07-18 | 2014-02-03 | Jtekt Corp | Bearing device for turbocharger |
| CN105675276A (en) * | 2016-01-13 | 2016-06-15 | 中国航空动力机械研究所 | Device and method for testing vibration damping property of elastic support extruded oil film damper |
| CN106907355A (en) * | 2017-04-28 | 2017-06-30 | 中国航发湖南动力机械研究所 | A kind of elastic bearing squeeze film damper |
| CN106989917A (en) * | 2017-06-01 | 2017-07-28 | 中国航发湖南动力机械研究所 | Flexibly support the dynamic stiffness measurement device and its measuring method of squeeze film damper |
| CN108487949A (en) * | 2018-06-28 | 2018-09-04 | 西安交通大学 | A kind of aero-engine adaptive damping squeeze film damper |
| CN109058380A (en) * | 2018-07-31 | 2018-12-21 | 中国航发湖南动力机械研究所 | Mouse cage bullet branch metal-rubber damper |
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| Publication number | Publication date |
|---|---|
| CN109764088A (en) | 2019-05-17 |
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