CN117739065A - Adjustable metal rubber composite elastic ring damper - Google Patents
Adjustable metal rubber composite elastic ring damper Download PDFInfo
- Publication number
- CN117739065A CN117739065A CN202311570394.XA CN202311570394A CN117739065A CN 117739065 A CN117739065 A CN 117739065A CN 202311570394 A CN202311570394 A CN 202311570394A CN 117739065 A CN117739065 A CN 117739065A
- Authority
- CN
- China
- Prior art keywords
- bearing seat
- kidney
- bearing
- metal rubber
- damping
- 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
- 229920001967 Metal rubber Polymers 0.000 title claims abstract description 30
- 239000002131 composite material Substances 0.000 title claims abstract description 17
- 238000013016 damping Methods 0.000 claims abstract description 70
- 238000007789 sealing Methods 0.000 claims description 19
- 230000006835 compression Effects 0.000 claims description 14
- 238000007906 compression Methods 0.000 claims description 14
- 210000004907 gland Anatomy 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 14
- 239000006096 absorbing agent Substances 0.000 abstract description 8
- 230000035939 shock Effects 0.000 abstract description 8
- 230000002950 deficient Effects 0.000 abstract description 4
- 239000003921 oil Substances 0.000 description 38
- 238000013461 design Methods 0.000 description 11
- 239000010687 lubricating oil Substances 0.000 description 7
- 238000001125 extrusion Methods 0.000 description 6
- 238000011160 research Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 241000555745 Sciuridae Species 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
Landscapes
- Support Of The Bearing (AREA)
Abstract
An adjustable metal rubber composite elastic ring damper relates to the technical field of rotary machinery. The invention aims to solve the problems that the existing elastic ring type damping shock absorber cannot adjust rigidity and damping, has nonlinear characteristics and has weak damping effect when supported in an oil-deficient state. The bearing seat is provided with two layers of hole groups, each layer of hole group comprises a plurality of kidney-shaped holes which are uniformly distributed in a circular ring shape, the two layers of hole groups and the bearing seat are coaxially nested, the kidney-shaped holes of the two layers of hole groups are arranged in a staggered manner, the kidney-shaped holes are axially communicated along the bearing seat, and metal rubber is filled in the kidney-shaped holes.
Description
Technical Field
The invention belongs to the technical field of rotary machinery, and particularly relates to a damper.
Background
The running state of the rotor directly affects the running stability and reliability of the whole machine of the rotary mechanical equipment such as a rotary gas turbine, a gear box and the like. With the increase of the rotation speed and the power of the rotating mechanical equipment, the vibration control of the rotor is more and more important, and the vibration reduction technology of the rotor is a research focus and a hot spot in the field of rotating machinery all the time.
The theory of rotor dynamics shows that: the mass, stiffness and damping of the rotor system mainly affect the rotor dynamics. The strength design of the rotor can be limited by adjusting parameters such as the mass, the rigidity and the like of the rotor so as to adjust the characteristics of the rotor such as the critical rotation speed and the like, the design optimization adjustment period is long, and the adjustment of the support rigidity and the damping at the support bearing of the rotor is relatively convenient. Therefore, the characteristics of rigidity, damping and the like of the supporting rotor are changed in engineering, and the critical rotation speed, unbalanced vibration response and other vibration characteristics of the rotor can be adjusted, such as: the elastic support extrusion oil film damper technology applied to the field of aeroengines mainly comprises two important parameters of adjusting the support rigidity and damping of a rotor: the critical rotation speed is adjusted by adjusting the rigidity and the damping of the elastic support, and the vibration energy of the rotor-support system is absorbed, so that a certain vibration reduction effect is realized.
The common damping and rigidity of the extrusion oil film damper at present are fixed under the condition that the external conditions such as structural design and lubricating oil are unchanged. In the practical use process, due to design and processing deviation, the actual rigidity and damping value often deviate from the design target value, and the rigidity and damping at the bearing support position often need to be adjusted through experiments in engineering, so that the extrusion oil film damper with variable damping and rigidity has great research and application values. Common elastic support damping vibration dampers comprise pull rod type elastic support damping vibration dampers, squirrel cage type elastic support damping vibration dampers, elastic ring type damping vibration dampers and the like, wherein the elastic ring type damping vibration dampers have the advantages of short axial distance, good linear characteristics and the like, but the common elastic ring type damping vibration dampers have the design capable of adjusting rigidity and damping; in addition, the common elastic ring type damping shock absorber often utilizes the damping effect of lubricating oil under the extrusion effect, has certain nonlinear characteristics, and the damping effect of the support is greatly weakened in the oil-deficient state of the damper.
Disclosure of Invention
The invention aims to solve the problems that the existing elastic ring type damping shock absorber cannot adjust rigidity and damping, has nonlinear characteristics and has weak damping effect of support in an oil-deficient state, and provides an adjustable metal rubber composite elastic ring damper.
An adjustable metal rubber composite elastic ring damper comprises a bearing 30, a bearing seat 40 and a shell 10 which are coaxially nested from inside to outside;
the bearing seat 40 is provided with two layers of hole groups, each layer of hole group comprises a plurality of kidney-shaped holes which are uniformly distributed in a circular ring shape, the two layers of hole groups are coaxially nested with the bearing seat 40, the kidney-shaped holes of the two layers of hole groups are arranged in a staggered manner, the kidney-shaped holes are axially communicated with the bearing seat 40, and metal rubber 50 is filled in the kidney-shaped holes.
Further, an oil supply ring groove 12 is formed in the inner wall of the casing 10 along the circumferential direction of the casing, and an oil inlet port 11 communicated with the oil supply ring groove 12 is formed in the surface of the casing 10;
the bearing seat 40 is provided with a damping oil path 60 communicated with the oil supply ring groove 12, and all kidney-shaped holes can be communicated and connected in series by the damping oil path 60.
Further, the damping oil path 60 includes a plurality of threaded holes 62 disposed along the radial direction of the bearing housing 40, and screw plugs 61 are screwed at both ends of the threaded holes 62.
Further, sealing caps 41 are respectively disposed at two ends of the bearing seat 40, and the sealing caps 41 are used for sealing the ends of the kidney-shaped hole.
Further, the sealing gland 41 is fixedly connected with the bearing seat 40 by bolts, and a sealing O-ring 42 is disposed therebetween.
Further, the adjustable metal rubber composite elastic ring damper further comprises a bearing inner ring compression nut 21 and a bearing outer ring compression nut 22;
the bearing inner ring compression nut 21 is used for compressing and fixing the bearing 30 and the rotor shaft 20;
the bearing outer ring compression nut 22 is used for compressing and fixing the bearing 30 and the bearing seat 40.
The beneficial effects of the invention are as follows:
1. by filling metal rubber in the kidney-shaped hole on the elastic ring, the nonlinearity of the damper is weakened, and the damper can be ensured to still have damping effect in the oil-free state.
2. The adjustment of the damping value of the damper is realized by adjusting the aperture and the quantity of screw holes on an intercommunication oil path between waist-shaped holes on the elastic ring.
3. The supporting rigidity of the damper is adjusted by adjusting the number and the length of damping screw plugs on the intercommunication oil circuit on the elastic ring, so that the performance of the damper is improved, and the rigidity and the damping adjustment convenience of the damper are improved.
In summary, according to the adjustable metal rubber composite elastic ring damper disclosed by the invention, the supporting damping is provided through the metal rubber and the damping oil path, so that the adjustable metal rubber composite elastic ring damper is suitable for supporting a rotor of a rotary machine.
Drawings
FIG. 1 is a schematic diagram of an adjustable metal rubber composite elastic ring damper;
FIG. 2 is a view A-A of FIG. 1;
fig. 3 is an enlarged view of the section I of fig. 1.
In the figure: the device comprises a shell 10, an oil inlet port 11, an oil supply ring groove 12, a rotor shaft 20, a bearing inner ring compression nut 21, a bearing outer ring compression nut 22, a bearing 30, a bearing seat 40, a sealing gland 41, a sealing O-shaped ring 42, metal rubber 50, a damping oil circuit 60, a screw plug 61 and a threaded hole 62.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention. It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other.
The common damping and rigidity of the conventional extrusion oil film damper are fixed under the condition that external conditions such as structural design and lubricating oil are unchanged, and in the actual use process, due to design and processing deviation, the actual rigidity and damping value often deviate from design target values, so that the adjustment of the rigidity and damping of a bearing support part is often required to be realized through experimental adjustment in engineering. Therefore, the squeeze film damper with variable damping and rigidity has great research and application values.
The traditional elastic ring type damping shock absorber has the advantages of short axial distance, good linear characteristic and the like, but the common elastic ring type damping shock absorber has a design capable of adjusting rigidity and damping. In addition, the common elastic ring type damping shock absorber often utilizes the damping effect of lubricating oil under the extrusion effect, has certain nonlinear characteristics, and the damping effect of the support is greatly weakened in the oil-deficient state of the damper.
Metal rubber is an advanced material with good damping characteristics. The traditional elastic ring type damping shock absorber is combined with the good damping characteristic of the metal rubber, so that the adverse characteristics such as nonlinearity and the like of the elastic ring type damping shock absorber can be reduced, and the damper can still have a certain damping effect in the spent oil state.
Accordingly, the present embodiment provides an adjustable metal rubber composite elastic ring damper, which is described with reference to fig. 1 to 3, and includes a bearing 30, a bearing housing 40, and a housing 10 coaxially nested from inside to outside, and further includes: the bearing comprises a bearing inner ring compression nut 21 and a bearing outer ring compression nut 22, wherein the bearing inner ring compression nut 21 is used for compressing and fixing the bearing 30 and the rotor shaft 20, and the bearing outer ring compression nut 22 is used for compressing and fixing the bearing 30 and the bearing seat 40, so that radial and axial positioning of the bearing 30 is realized.
As shown in fig. 2, the bearing seat 40 is provided with two layers of hole groups, and each layer of hole group comprises a plurality of kidney-shaped holes which are uniformly distributed in a circular ring shape. The two-layer hole group and the bearing seat 40 are coaxially nested. Waist-shaped holes of the two-layer hole group are arranged in a staggered mode.
The kidney-shaped hole is penetrated axially along the bearing seat 40, and the kidney-shaped hole is filled with metal rubber 50.
The inner wall of the shell 10 is provided with an oil supply ring groove 12 along the circumferential direction, and the surface of the shell 10 is provided with an oil inlet port 11 communicated with the oil supply ring groove 12. The bearing seat 40 is provided with a damping oil path 60 communicated with the oil supply ring groove 12, and all kidney-shaped holes can be communicated and connected in series by the damping oil path 60.
The damping oil path 60 includes a plurality of threaded holes 62 disposed along the radial direction of the bearing housing 40, and screw plugs 61 are screwed at both ends of the threaded holes 62. The number of screw holes 62 in the axial direction is n+1, and the distance between adjacent two screw holes 62 is L.
Sealing glands 41 are respectively arranged at two ends of the bearing seat 40, and the sealing glands 41 are used for sealing the ends of the kidney-shaped holes.
The sealing gland 41 is fixedly connected with the bearing seat 40 through bolts, and a sealing O-shaped ring 42 is arranged between the sealing gland and the bearing seat.
In practical application, the oil inlet port 11 and the oil supply ring groove 12 on the casing 10 can provide the damping oil path 60 with the lubricating oil with a certain pressure, and the lubricating oil in each kidney-shaped hole can only flow between the cavities through the screw plug 61 of the damping oil path 60, so that the metal rubber component 50 is soaked in the lubricating oil. The bearing seat 40 is provided with a waist-shaped hole, so that the bearing seat 40 has certain elasticity and can provide certain supporting rigidity. Further, the bearing housing 40 is elastically deformed when the rotor shaft 20 vibrates, and the kidney-shaped hole is deformed to allow the oil in the kidney-shaped hole to flow, so that the oil flows between the holes after passing through the screw plug 61 of the damping oil path 60, thereby providing a throttling damping effect. Meanwhile, the deformation of the kidney-shaped hole causes the metal rubber 50 filled in the interior to deform, and the metal rubber 50 also plays a certain damping role, so that the damper can still provide a certain damping role when the damper is in a spent oil state. The damping effect is adjusted by adjusting the number of the screw plugs and the diameter of the damping hole of each screw plug. The two plugs at the radial angle can realize damping distribution adjustment of the radial angle. The adjustment of the plug length can realize the material distribution at the lap joint position of the kidney-shaped holes, thereby adjusting the supporting rigidity of the bearing seat 40.
In summary, the invention provides the adjustable metal rubber composite elastic ring damper, wherein the metal rubber is filled between the upper waist cavities of the elastic rings, so that the nonlinearity of the damper is further weakened, and the damping effect of the damper in the oil-free state can be ensured; the adjustment of the damping value of the damper is realized by adjusting the aperture and the quantity of damping screw holes on the oil circuit communicated between the upper waist cavities of the elastic ring; the supporting rigidity of the damper is adjusted by adjusting the number and the length of damping screw plugs on the oil circuit communicated with the elastic ring. The design provided by the invention can improve the performance of the damper and the rigidity and the convenience of damping adjustment.
Although the invention herein has been described with reference to particular embodiments, it is to be understood that these embodiments are merely illustrative of the principles and applications of the present invention. It is therefore to be understood that numerous modifications may be made to the illustrative embodiments and that other arrangements may be devised without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that the different dependent claims and the features described herein may be combined in ways other than as described in the original claims. It is also to be understood that features described in connection with separate embodiments may be used in other described embodiments.
Claims (6)
1. An adjustable metal rubber composite elastic ring damper comprises a bearing (30), a bearing seat (40) and a shell (10) which are coaxially nested from inside to outside;
the method is characterized in that;
the bearing seat (40) is provided with two layers of hole groups, each layer of hole group comprises a plurality of kidney-shaped holes which are uniformly distributed in a circular ring shape, the two layers of hole groups are coaxially nested with the bearing seat (40), the kidney-shaped holes of the two layers of hole groups are arranged in a staggered manner, the kidney-shaped holes are axially communicated with the bearing seat (40), and metal rubber (50) is filled in the kidney-shaped holes.
2. An adjustable metal rubber composite elastic ring damper according to claim 1, wherein;
an oil supply ring groove (12) is formed in the inner wall of the shell (10) along the circumferential direction of the shell, and an oil inlet port (11) communicated with the oil supply ring groove (12) is formed in the surface of the shell (10);
the bearing seat (40) is provided with a damping oil path (60) communicated with the oil supply ring groove (12), and all kidney-shaped holes can be communicated and connected in series by the damping oil path (60).
3. An adjustable metal rubber composite elastic ring damper according to claim 2, wherein;
the damping oil way (60) comprises a plurality of threaded holes (62) which are radially arranged along the bearing seat (40), and screw plugs (61) are connected to two ends of the threaded holes (62) in a threaded mode.
4. An adjustable metal rubber composite elastic ring damper according to claim 1, 2 or 3, characterized in that;
sealing glands (41) are respectively arranged at two ends of the bearing seat (40), and the sealing glands (41) are used for sealing the ends of the kidney-shaped holes.
5. An adjustable metal rubber composite elastic ring damper according to claim 4, wherein;
the sealing gland (41) is fixedly connected with the bearing seat (40) through bolts, and a sealing O-shaped ring (42) is arranged between the sealing gland and the bearing seat.
6. An adjustable metal rubber composite elastic ring damper according to claim 1, 2 or 3, characterized in that;
further comprises: a bearing inner ring compression nut (21) and a bearing outer ring compression nut (22);
the bearing inner ring compression nut (21) is used for compressing and fixing the bearing (30) and the rotor shaft (20);
the bearing outer ring compression nut (22) is used for compressing and fixing the bearing (30) and the bearing seat (40).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311570394.XA CN117739065A (en) | 2023-11-22 | 2023-11-22 | Adjustable metal rubber composite elastic ring damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311570394.XA CN117739065A (en) | 2023-11-22 | 2023-11-22 | Adjustable metal rubber composite elastic ring damper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117739065A true CN117739065A (en) | 2024-03-22 |
Family
ID=90251663
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311570394.XA Pending CN117739065A (en) | 2023-11-22 | 2023-11-22 | Adjustable metal rubber composite elastic ring damper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117739065A (en) |
-
2023
- 2023-11-22 CN CN202311570394.XA patent/CN117739065A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108487949B (en) | Variable damping squeeze oil film damper for aircraft engine | |
| US4693616A (en) | Bearing for a fluid flow engine and method for damping vibrations of the engine | |
| Wang et al. | Nonlinear effects of induced unbalance in the rod fastening rotor-bearing system considering nonlinear contact | |
| US9739170B2 (en) | Flexibly damped mounting assemblies for power gear box transmissions in geared aircraft engine architectures | |
| RU2663958C2 (en) | Rotating machinery with adaptive bearing journals and methods of operating | |
| CA1219150A (en) | Squeeze film damper | |
| US20070248293A1 (en) | Bearing assembly and centering support structure therefor | |
| CN105782339B (en) | Variable inertia variable damping torsional vibration damper | |
| CN111637149A (en) | Foil gas bearing with elastic damping structure | |
| CN107387772B (en) | Compact ultra-high-speed high-temperature-resistant mechanical sealing device | |
| CN108204423A (en) | Corrugated foil type squeeze film damper | |
| CN202056209U (en) | Adjustment structure for tapered roller bearings | |
| CN103758916B (en) | A kind of damping shock absorber | |
| CA2213932A1 (en) | Rotor supercharger with oil slit for vibration damping | |
| CN117739065A (en) | Adjustable metal rubber composite elastic ring damper | |
| CN204517558U (en) | A kind of vibration damping end cap and there is the motor of vibration damping end cap | |
| CN111637198B (en) | Split herringbone gear and planetary transmission device thereof | |
| CN112727994A (en) | Adjustable squeeze film damper | |
| CN110630686A (en) | Vortex type squeeze oil film damper | |
| CN210978372U (en) | Vortex type squeeze oil film damper | |
| CN112762133B (en) | Squirrel-cage type squeeze film damper | |
| CN210531509U (en) | Cantilever type double-layer squeeze film damping shock absorber | |
| CN103267024B (en) | Centrifugal compressor with electromagnetic controller | |
| CN105422732B (en) | Stick structure that a kind of composite damping vibration damping for elongated rotating shaft is swollen | |
| CN108204422B (en) | Parallel extrusion oil film damper |
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 |