CN102927196B - Extrusion oil film damper running synchronously with propulsion shaft system - Google Patents
Extrusion oil film damper running synchronously with propulsion shaft system Download PDFInfo
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- CN102927196B CN102927196B CN201210437346.9A CN201210437346A CN102927196B CN 102927196 B CN102927196 B CN 102927196B CN 201210437346 A CN201210437346 A CN 201210437346A CN 102927196 B CN102927196 B CN 102927196B
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- damping
- ring
- damper
- outer shroud
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Abstract
The invention provides an extrusion oil film damper running synchronously with a propulsion shaft system. The damper comprises a damper inner ring and a damper outer ring. The damper inner ring is in interference fit with a shaft. The damper outer ring is of an annular structure and is provided with a plurality of axial through holes evenly distributed along the circumferential direction. The damping outer ring is coaxially sleeved on the outside of the damper inner ring, a bolt is inserted in each axial through hole, the bolts enable the damper outer ring and the damper inner ring to be connected, and the bolts are not completely contacted with the inner wall faces of the axial through holes. A sealing space is formed between the outer wall face of the damper inner ring and the inner wall face of the damper outer ring through an annular sealing ring, and a lubricating oil film is injected in the sealing space. The damper utilizes the sealing ring to package the oil film between the damper outer ring and the damper inner ring, does not require an extra oil path, can be directly installed on the propulsion shaft system without installing a support seat on the damper outer ring, and reduces size and weight. When the shaft vibrates, radial relative vibration happens between the damper outer ring and the damper inner ring, vibration energy is absorbed by the lubricating oil film, and shaft system vibration is reduced.
Description
Technical field
The present invention relates to Propulsion Systems antivibration area, be specially a kind of and the synchronous operated squeeze film damper of Propulsion Systems.
Background technique
Propulsion Systems is because the impact of the factors such as dynamic unbalance, installation misalign there will be larger transverse vibration, and reduction shafting vibration can improve the stability of equipment operation, reduces noise of equipment.Utilize the squeeze film damper of installing bearing outside, the energy of the shock absorption shafting vibration by oil film, the method that reduces shafting vibration is that current general axle is vibration reducing measure.
Conventional extruded film damper, as disclosed a kind of squeeze film damper in " rotor dynamics " chapter 4 of writing of the wicker plaiting article of looking after one's family, be vibrational energy by the sealing oil film absorption axes between outer race and bearing support, outer race and bearing support all do not rotate with axle system.This squeeze film damper is owing to can only being arranged on bearing outside, thus exist mounting point limited, and need the problem of additional designs circulating oil path.
Summary of the invention
The technical problem solving
Can only be arranged on outside bearing support for solving conventional extruded film damper, and the deficiency of oil circuit need to be provided, the present invention proposes a kind of and the synchronous operated squeeze film damper of Propulsion Systems.
Technological scheme
Technological scheme of the present invention is:
The synchronous operated squeeze film damper of described one and Propulsion Systems, is characterized in that: comprise ring and damping outer shroud in damping;
In described damping, ring is sleeve type, is enclosed within on the axle for the treatment of vibration damping, and encircles and axle interference fit in damping; Described damping outer shroud is ring type structure, has the axial hole that several are uniformly distributed circumferentially on damping outer shroud, and the central axis of all axial holes is identical with the distance of damping outer shroud central axis; Described damping outer shroud coaxial sleeve encircles outside in damping, in each described axial hole, is inserted with double-screw bolt, and double-screw bolt is connected damping outer shroud with ring in damping, and double-screw bolt not exclusively contacts with axial hole internal face, the axial motion of ring restriction damping outer shroud in damping; Between damping endocyclic outer wall face and damping outer shroud internal face, form seal space by ring-like seal ring, in described seal space, be marked with lubricant oil mould.
The synchronous operated squeeze film damper of described one and Propulsion Systems, is characterized in that: the axial hole of damping outer shroud is ellipse hole, and wherein oval major axis points to the central axis of damping outer shroud, and oval minor axis length equals double-screw bolt diameter.
The synchronous operated squeeze film damper of described one and Propulsion Systems, is characterized in that: the difference of the major semi axis of the axial hole of damping outer shroud and double-screw bolt radius equals oil film thickness.
The synchronous operated squeeze film damper of described one and Propulsion Systems, is characterized in that: the axial two ends of damping outer shroud are fixed with cushion.
The synchronous operated squeeze film damper of described one and Propulsion Systems, is characterized in that: between damping endocyclic outer wall face and damping outer shroud internal face, gap is 0.2mm ~ 0.25mm.
The synchronous operated squeeze film damper of described one and Propulsion Systems, is characterized in that: described damping inner axle has radial protrusion to one end, and the other end is fixedly connected with ring-like baffle plate; Described double-screw bolt is stud, and stud one end is fixedly connected with to the radial protrusion of one end with damping inner axle, and the stud the other end is fixedly connected with ring-like baffle plate; The cushion at the axial two ends of damping outer shroud contacts with ring-like baffle plate to the radial protrusion of one end with damping inner axle respectively.
Beneficial effect
The present invention is encapsulated in oil film in damping outer shroud and damping between ring by seal ring, so without oil circuit is additionally provided, and need to just can not be directly installed on Propulsion Systems at damping outer shroud erection support, reduce volume and weight.In the time of shaft vibration, in damping outer shroud and damping can there is radially Relative Vibration in interannular, and the lubricated oily mould of energy of vibration absorbs, thereby reduces shafting vibration.
Brief description of the drawings
Fig. 1: structural representation of the present invention;
Fig. 2: the sectional view of damping outer shroud;
Wherein: 1. axle, 2. ring in damping, 3. damping outer shroud, 4. stud, 5. lubricant oil mould, 6. seal ring, 7. cushion, 8. baffle plate, 9. oil hole.
Embodiment
Below in conjunction with specific embodiment, the present invention is described:
In the present embodiment, comprise and in damping, encircle 2 and damping outer shroud 3 with the synchronous operated squeeze film damper of Propulsion Systems.
With reference to accompanying drawing 1, in described damping, ring 2 is sleeve type structure, is enclosed within on the axle 1 for the treatment of vibration damping, and encircles and axle 1 interference fit in damping.Described damping inner axle has radial protrusion to one end, and the other end is fixedly connected with ring-like baffle plate 8, and in damping, the radial protrusion of ring and ring-like baffle plate are used for damping outer shroud axial limiting.
With reference to accompanying drawing 2, described damping outer shroud is ring type structure, has the axial hole that several are uniformly distributed circumferentially on damping outer shroud, has opened 8 axial holes in the present embodiment.The central axis of all axial holes is identical with the distance of damping outer shroud central axis, axial hole is used for inserting double-screw bolt 4, damping outer shroud is connected with ring in damping, double-screw bolt not exclusively contacts with axial hole internal face simultaneously, can make again damping outer shroud have space radially with respect to ring in damping.
So, as shown in Figure 1, described damping outer shroud coaxial sleeve encircles outside in damping, in each axial hole, be inserted with double-screw bolt, described double-screw bolt is stud, stud one end and damping inner axle to radial protrusion screw thread be fixedly connected with, the stud the other end, through ring-like baffle plate, is fixedly connected with by nut.By fastening nut, thereby define damping outer shroud with respect to the axial motion encircling in damping.Meanwhile, vulcanize flexible pad 7 at the axial two ends of damping outer shroud, by cushion, ring in damping outer shroud and damping is separated.
With reference to accompanying drawing 2, in the present embodiment, preferably the axial hole of damping outer shroud is ellipse hole, and wherein oval major axis points to the central axis of damping outer shroud, and oval minor axis length equals stud diameter.Like this, be convenient to damping outer shroud with respect to encircling radial motion in damping, and define the rotation of damping outer shroud.
Between damping endocyclic outer wall face and damping outer shroud internal face, form seal space by ring-like seal ring 6, in described seal space, be marked with lubricant oil mould 5 by oil hole 9.Find by great many of experiments, in the time that between damping endocyclic outer wall face and damping outer shroud internal face, gap is 0.2mm ~ 0.25mm (between oil film thickness and damping endocyclic outer wall face and damping outer shroud internal face, gap is identical), effectiveness in vibration suppression is better.Now, the difference of the major semi axis of the axial hole of damping outer shroud and stud radius equals oil film thickness.
In the time that axle 1 vibrates, in damping outer shroud 3 and damping, between ring 2, can there is radially Relative Vibration, the lubricated oily mould 5 of energy of vibration absorbs, thereby reduces shafting vibration.
Claims (4)
1. with the synchronous operated squeeze film damper of Propulsion Systems, it is characterized in that: comprise ring and damping outer shroud in damping;
In described damping, ring is sleeve type, is enclosed within on the axle for the treatment of vibration damping, and encircles and axle interference fit in damping; Described damping outer shroud is ring type structure, has the axial hole that several are uniformly distributed circumferentially on damping outer shroud, and the central axis of all axial holes is identical with the distance of damping outer shroud central axis; The axial hole of damping outer shroud is ellipse hole, and wherein oval major axis points to the central axis of damping outer shroud, and oval minor axis length equals double-screw bolt diameter; Described damping outer shroud coaxial sleeve encircles outside in damping, and the axial two ends of damping outer shroud are fixed with cushion, in each described axial hole, be inserted with double-screw bolt, double-screw bolt is connected damping outer shroud with ring in damping, double-screw bolt not exclusively contacts with axial hole internal face, the axial motion of ring restriction damping outer shroud in damping; Between damping endocyclic outer wall face and damping outer shroud internal face, form seal space by ring-like seal ring, in described seal space, be marked with lubricant film.
2. a kind of and the synchronous operated squeeze film damper of Propulsion Systems according to claim 1, is characterized in that: the difference of the major semi axis of the axial hole of damping outer shroud and double-screw bolt radius equals oil film thickness.
3. a kind of and the synchronous operated squeeze film damper of Propulsion Systems according to claim 2, is characterized in that: between damping endocyclic outer wall face and damping outer shroud internal face, gap is 0.2mm～0.25mm.
4. a kind of and the synchronous operated squeeze film damper of Propulsion Systems according to claim 3, is characterized in that: described damping inner axle has radial protrusion to one end, the other end is fixedly connected with ring-like baffle plate; Described double-screw bolt is stud, and stud one end is fixedly connected with to the radial protrusion of one end with damping inner axle, and the stud the other end is fixedly connected with ring-like baffle plate; The cushion at the axial two ends of damping outer shroud contacts with ring-like baffle plate to the radial protrusion of one end with damping inner axle respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210437346.9A CN102927196B (en) | 2012-11-05 | 2012-11-05 | Extrusion oil film damper running synchronously with propulsion shaft system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210437346.9A CN102927196B (en) | 2012-11-05 | 2012-11-05 | Extrusion oil film damper running synchronously with propulsion shaft system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102927196A CN102927196A (en) | 2013-02-13 |
| CN102927196B true CN102927196B (en) | 2014-11-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210437346.9A Active CN102927196B (en) | 2012-11-05 | 2012-11-05 | Extrusion oil film damper running synchronously with propulsion shaft system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102927196B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109139795A (en) * | 2018-10-23 | 2019-01-04 | 珠海格力智能装备有限公司 | Damper and testing machine with it |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10738653B2 (en) | 2017-05-03 | 2020-08-11 | General Electric Company | Squeeze film damper assemblies |
| CN109139794B (en) * | 2018-10-23 | 2024-04-09 | 珠海格力智能装备有限公司 | Damper and overspeed testing machine with same |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4787868A (en) * | 1984-08-30 | 1988-11-29 | Sanshin Kogyo Kabushiki Kaisha | Torsional vibration damping means for marine propulsion device |
| US5058452A (en) * | 1990-05-08 | 1991-10-22 | University Of South Florida | Hybrid squeeze film damper for active control of rotors |
| US5149206A (en) * | 1991-04-17 | 1992-09-22 | General Electric Company | Hydraulic shaft damper pressure control |
| CN1176354A (en) * | 1996-09-07 | 1998-03-18 | Itw－阿特克有限公司 | Rotation damper |
| CN1367326A (en) * | 2001-01-26 | 2002-09-04 | 株式会社尼富考 | Rotary damper and auxiliary clamping device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08261231A (en) * | 1995-03-20 | 1996-10-08 | Ishikawajima Harima Heavy Ind Co Ltd | Squeezed film dumper bearing |
-
2012
- 2012-11-05 CN CN201210437346.9A patent/CN102927196B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4787868A (en) * | 1984-08-30 | 1988-11-29 | Sanshin Kogyo Kabushiki Kaisha | Torsional vibration damping means for marine propulsion device |
| US5058452A (en) * | 1990-05-08 | 1991-10-22 | University Of South Florida | Hybrid squeeze film damper for active control of rotors |
| US5149206A (en) * | 1991-04-17 | 1992-09-22 | General Electric Company | Hydraulic shaft damper pressure control |
| CN1176354A (en) * | 1996-09-07 | 1998-03-18 | Itw－阿特克有限公司 | Rotation damper |
| CN1367326A (en) * | 2001-01-26 | 2002-09-04 | 株式会社尼富考 | Rotary damper and auxiliary clamping device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109139795A (en) * | 2018-10-23 | 2019-01-04 | 珠海格力智能装备有限公司 | Damper and testing machine with it |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102927196A (en) | 2013-02-13 |
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