CN113915444A - Metal rubber elastic friction damper for high-temperature pipeline - Google Patents
Metal rubber elastic friction damper for high-temperature pipeline Download PDFInfo
- Publication number
- CN113915444A CN113915444A CN202111271214.9A CN202111271214A CN113915444A CN 113915444 A CN113915444 A CN 113915444A CN 202111271214 A CN202111271214 A CN 202111271214A CN 113915444 A CN113915444 A CN 113915444A
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- metal
- semi
- ring
- pipeline
- damping
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- 229920001967 Metal rubber Polymers 0.000 title claims abstract description 53
- 239000002184 metal Substances 0.000 claims abstract description 85
- 238000013016 damping Methods 0.000 claims abstract description 74
- 238000000034 method Methods 0.000 claims description 8
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 230000009467 reduction Effects 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims description 3
- 238000009434 installation Methods 0.000 abstract description 5
- 239000002131 composite material Substances 0.000 abstract description 4
- 239000000956 alloy Substances 0.000 abstract description 3
- 229910045601 alloy Inorganic materials 0.000 abstract description 3
- 238000005253 cladding Methods 0.000 abstract description 2
- 238000010276 construction Methods 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 9
- 230000000694 effects Effects 0.000 description 7
- 239000006096 absorbing agent Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 230000035939 shock Effects 0.000 description 3
- 238000003466 welding Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
Images
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
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/02—Energy absorbers; Noise absorbers
- F16L55/033—Noise absorbers
- F16L55/035—Noise absorbers in the form of specially adapted hangers or supports
-
- 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
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/022—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using dampers and springs in combination
-
- 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
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/08—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with rubber springs ; with springs made of rubber and metal
- F16F15/085—Use of both rubber and metal springs
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention relates to a metal rubber elastic friction damper for a high-temperature pipeline, which comprises two semi-ring units, wherein each semi-ring unit comprises a metal semi-ring and a plurality of layers of semi-annular metal damping corrugated plates arranged in the metal semi-ring from inside to outside, a metal rubber main body is arranged between every two adjacent metal damping corrugated plates, and the outermost metal damping corrugated plate is fixedly connected with the metal semi-ring; two semi-ring unit tip releasable connection form the ring body parcel after connecting and fix at pipeline periphery side, paste the pipeline in the metal damping buckled plate of inlayer, this attenuator simple structure is compact, and installation space is little, introduces damping alloy and metal rubber composite construction, not only can fully rub the power consumption to can select the metal rubber number of piles according to operating condition, be applicable to high temperature environment and damping performance good, adopt cladding structure to solve traditional vibration damper structure big, account for not enough such as installation space.
Description
Technical Field
The invention relates to the technical field of metal rubber composite vibration reduction, in particular to a metal rubber elastic friction damper for a high-temperature pipeline.
Background
The vibration causes of the pipe system are complex and severe, and due to high temperature, high pressure and the like, the medium in the pipe flows periodically and intermittently and the vibration and noise of the pipe caused by the pulse cause the fatigue damage of the machine parts and reduce the service life of the machine parts. In order to ensure the operation period of the machine parts, the resonance effect generated by the frequency of the medium flowing at high speed in the pipeline and the natural frequency of the pipe fitting needs to be reduced.
For the integral structural members such as high-temperature pipelines and the like, the designed shock absorber is required to have small installation space, pressure bearing and enough performances of pressure resistance, fatigue resistance and the like, the shock absorber in practical application adopts damping alloy, but the strength of the shock absorber is lower than that of the pipelines and the structural members, and the organic matter with large damping coefficient cannot be used in the high-temperature environment.
Disclosure of Invention
The invention aims to overcome the defects and provides the metal rubber elastic friction damper for the high-temperature pipeline.
The metal rubber elastic friction damper comprises two semi-ring units, wherein each semi-ring unit comprises a metal semi-ring and a plurality of layers of semi-annular metal damping corrugated plates arranged in the metal semi-ring from inside to outside, a metal rubber main body is arranged between every two adjacent metal damping corrugated plates, and the outermost metal damping corrugated plate is fixedly connected with the metal semi-ring; the ends of the two semi-ring units are detachably connected, a ring body is formed after the connection to be wrapped and fixed on the outer peripheral side of the pipeline, and the innermost metal damping corrugated plate is internally attached to the pipeline.
Furthermore, the metal damping corrugated plate comprises a plurality of outer convex arc parts and inner concave arc parts which are arranged in a staggered mode and connected in sequence.
Furthermore, the outermost metal damping corrugated plate is welded at the corresponding contact position of the metal semi-rings.
Further, the metal rubber main body is welded with the adjacent metal damping corrugated plate.
Furthermore, both ends of the metal semi-ring are provided with connecting lugs, and the connecting lugs of the semi-ring unit are connected through bolts.
Furthermore, be provided with support piece between the two engaging lugs that are connected, support piece outer end clamp is established between two engaging lugs, and support piece inner is provided with the hole portion of stepping down to metal damping buckled plate, metal rubber main part, and the matched with bolt hole has been seted up to support piece outer end and correspondence on the engaging lug.
A vibration damping method of a high-temperature pipeline comprises the following steps: two semi-ring units of the damper are installed on a pipeline, the two semi-ring units are connected to form a ring body which is wrapped and fixed on the outer peripheral side of the pipeline, and the innermost layer of metal damping corrugated plate is internally pasted with the pipeline; when the weight of the pipeline, the flow of internal fluid and the pipeline are subjected to external exciting force, force is transmitted to the metal damping corrugated plate of the damper, metal wires of the metal rubber main body can be fully rubbed in the force transmission process, and the metal rubber main body interacts with the metal damping corrugated plate in the rubbing process, so that vibration is reduced and certain impact resistance is achieved; the efficiency of vibration reduction is adjusted by controlling the thickness and the layer number of the metal damping corrugated plate and the metal rubber main body in the damper.
Compared with the prior art, the invention has the following beneficial effects: the damping device is simple and compact in structure and small in installation space, a damping alloy and metal rubber composite structure is introduced, energy consumption can be fully reduced, the number of layers of metal rubber can be selected according to actual working conditions, the damping device is suitable for a high-temperature environment, the damping performance is good, and the defects that a traditional damping device is large in structure, occupies installation space and the like are overcome by adopting a cladding structure.
Drawings
The invention is further described with reference to the following figures.
Fig. 1 is a perspective view of a damper.
Fig. 2 is a front view structural view of the damper.
Fig. 3 is an enlarged view of a portion a of fig. 2.
Fig. 4 is a schematic top view of the damper.
FIG. 5 is a schematic diagram of a half-ring unit
In the figure: 1. a pipeline; 2. a first metal damping corrugated plate; 3. a first metal rubber body; 4. a second metal damping corrugated plate; 5. a second metal rubber body; 6. a third metal damping corrugated plate; 7. a third metal rubber body; 8. a fourth metal damping corrugated plate; 9. a metal half ring; 10. a support member; 11. a bolt; 12. and a nut.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
As shown in figures 1-5, a metal rubber elastic friction damper for high temperature pipeline comprises two semi-ring units, wherein the semi-ring units comprise a metal semi-ring 9, a plurality of layers of semi-ring-shaped metal damping corrugated plates arranged in the metal semi-ring from inside to outside, a wavy metal rubber main body is arranged between the adjacent metal damping corrugated plates, the outermost metal damping corrugated plate is fixedly connected with the metal semi-ring, if a first metal damping corrugated plate 2, a second metal damping corrugated plate 4, a third metal damping corrugated plate 6 and a fourth metal damping corrugated plate 8 are arranged from inside to outside, a first metal rubber main body 3 is arranged between the first metal damping corrugated plate and the second metal damping corrugated plate, a second metal damping corrugated plate 5 is arranged between the second metal damping corrugated plate and the third metal damping corrugated plate, a third metal damping corrugated plate 5 is arranged between the third metal damping corrugated plate and the third metal damping corrugated plate, A third metal rubber main body 7 is arranged between the fourth metal damping corrugated plates; the ends of the two semi-ring units are detachably connected to form a ring body which is wrapped and fixed on the outer peripheral side of the pipeline after being connected, and the innermost layer of the metal damping corrugated plate is internally attached to the pipeline 1; the metal rubber main body in the metal rubber elastic friction damper is designed into a corrugated shape, and the metal wires in the metal rubber are fully subjected to friction energy consumption through the position limitation of the metal damping corrugated plates between layers, the metal rubber is an elastic porous pure metal damping material prepared from spiral metal wires, has the effects of high temperature resistance, corrosion resistance, ageing resistance and the like, and has better environmental adaptability than the traditional polymer;
the damper can be applied to pipeline vibration reduction in a high-temperature environment with a small closed space, so that the defect that a high polymer material cannot be applied to the high-temperature environment for a long time is overcome, and the service life is long; the composite structure of the metal damping corrugated plate and the metal rubber can fully perform friction energy consumption between the metal rubbers in the using process, and the effect of effective broadband vibration reduction and impact resistance in a high-temperature environment is realized.
In this embodiment, a corrugated form is adopted, which is different from the conventional regular annular metal rubber form, and the adopted corrugated structure has a vibration-damping and impact-resisting effect, and the metal rubber in the interlayer has a high damping effect, so that the friction of the metal rubber is more sufficient by concentrated contact.
In this embodiment, the metal damping corrugated plate includes a plurality of outer convex arc portions and inner concave arc portions that are staggered and connected in sequence.
In this embodiment, the outermost metal damping corrugated plate is welded to the corresponding contact position of the metal half ring.
In this embodiment, the metal rubber main body is welded with the adjacent metal damping corrugated plate, and the activity space of the metal rubber main body inside can be well limited by the welding effect.
In this embodiment, the two ends of the metal half ring are both provided with connecting lugs, and the connecting lugs of the half ring unit are connected through a bolt 11 and a nut 12.
In this embodiment, be provided with support piece 10 between the two engaging lugs that are connected, support piece outer end clamp is established between two engaging lugs, and support piece inner is provided with the hole portion of stepping down to metal damping buckled plate, metal rubber main part, and the corresponding bolt hole of having seted up matched with on support piece outer end and the engaging lug.
A vibration damping method of a high-temperature pipeline comprises the following steps: two semi-ring units of the damper are installed on a pipeline, the two semi-ring units are connected to form a ring body which is wrapped and fixed on the outer peripheral side of the pipeline, and the innermost layer of metal damping corrugated plate is internally pasted with the pipeline; when the weight of the pipeline, the flow of internal fluid and the pipeline are subjected to external exciting force, force is transmitted to the metal damping corrugated plate of the damper, metal wires of the metal rubber main body can be fully rubbed in the force transmission process, and the metal rubber main body interacts with the metal damping corrugated plate in the rubbing process, so that vibration is reduced and certain impact resistance is achieved; the efficiency of vibration reduction is adjusted by controlling the thickness and the layer number of the metal damping corrugated plate and the metal rubber main body in the damper.
If this patent discloses or refers to parts or structures that are fixedly connected to each other, the fixedly connected may be understood as: a detachable fixed connection (for example using bolts or screws) is also understood as: non-detachable fixed connections (e.g. riveting, welding), but of course, fixed connections to each other may also be replaced by one-piece structures (e.g. manufactured integrally using a casting process) (unless it is obviously impossible to use an integral forming process).
In the description of this patent, it is to be understood that the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the patent, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the patent.
The above-mentioned preferred embodiments, further illustrating the objects, technical solutions and advantages of the present invention, should be understood that the above-mentioned are only preferred embodiments of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. The utility model provides a metal rubber elasticity friction damper for high temperature pipeline which characterized in that: the metal semi-ring unit comprises two semi-ring units, wherein each semi-ring unit comprises a metal semi-ring and a plurality of layers of semi-ring-shaped metal damping corrugated plates arranged in the metal semi-ring from inside to outside, a metal rubber main body is arranged between every two adjacent metal damping corrugated plates, and the outermost metal damping corrugated plate is fixedly connected with the metal semi-ring; the ends of the two semi-ring units are detachably connected, a ring body is formed after the connection to be wrapped and fixed on the outer peripheral side of the pipeline, and the innermost metal damping corrugated plate is internally attached to the pipeline.
2. The metal-rubber elastic friction damper for high temperature pipes as claimed in claim 1, wherein: the metal damping corrugated plate comprises a plurality of outer convex arc parts and inner concave arc parts which are arranged in a staggered mode and connected in sequence.
3. The metal-rubber elastic friction damper for high temperature pipes as claimed in claim 1, wherein: and the outermost metal damping corrugated plate is welded at the corresponding contact position of the metal semi-rings.
4. The metal-rubber elastic friction damper for high temperature pipes as claimed in claim 1, wherein: the metal rubber main body is welded with the adjacent metal damping corrugated plate.
5. The metal-rubber elastic friction damper for high temperature pipes as claimed in claim 1, wherein: the two ends of the metal semi-rings are provided with connecting lugs, and the connecting lugs of the semi-ring units are connected through bolts.
6. The metal-rubber elastic friction damper for high temperature pipes according to claim 5, characterized in that: be provided with support piece between the two engaging lugs that are connected, support piece outer end clamp is established between two engaging lugs, and support piece inner is provided with the hole portion of stepping down to metal damping buckled plate, metal rubber main part, corresponds on support piece outer end and the engaging lug and has seted up matched with bolt hole.
7. A method for damping vibration of a high-temperature pipeline using the metal rubber elastic friction damper according to any one of claims 1 to 6, characterized in that: two semi-ring units of the damper are installed on a pipeline, the two semi-ring units are connected to form a ring body which is wrapped and fixed on the outer peripheral side of the pipeline, and the innermost layer of metal damping corrugated plate is internally pasted with the pipeline; when the weight of the pipeline, the flow of internal fluid and the pipeline are subjected to external exciting force, force is transmitted to the metal damping corrugated plate of the damper, metal wires of the metal rubber main body can be fully rubbed in the force transmission process, and the metal rubber main body interacts with the metal damping corrugated plate in the rubbing process, so that vibration is reduced and certain impact resistance is achieved; the efficiency of vibration reduction is adjusted by controlling the thickness and the layer number of the metal damping corrugated plate and the metal rubber main body in the damper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111271214.9A CN113915444A (en) | 2021-10-29 | 2021-10-29 | Metal rubber elastic friction damper for high-temperature pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111271214.9A CN113915444A (en) | 2021-10-29 | 2021-10-29 | Metal rubber elastic friction damper for high-temperature pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113915444A true CN113915444A (en) | 2022-01-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111271214.9A Pending CN113915444A (en) | 2021-10-29 | 2021-10-29 | Metal rubber elastic friction damper for high-temperature pipeline |
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| Country | Link |
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| CN (1) | CN113915444A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114458711A (en) * | 2022-01-22 | 2022-05-10 | 福州大学 | Universal shock absorber structure for improving metal rubber shock absorption effect |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1746080A1 (en) * | 1989-11-20 | 1992-07-07 | Самарский авиационный институт им.акад.С.П.Королева | Springy-damping skidding support |
| RU2020311C1 (en) * | 1991-05-20 | 1994-09-30 | Самарский государственный аэрокосмический университет | Damper |
| RU55310U1 (en) * | 2006-02-21 | 2006-08-10 | Государственное образовательное учреждение высшего профессионального образования Самарский государственный аэрокосмический университет имени академика С.П. Королева | Vibration Isolator |
| CN104164835A (en) * | 2014-08-15 | 2014-11-26 | 铁道第三勘察设计院集团有限公司 | High-damping vibration attenuation rubber support for bridge |
| CN204062168U (en) * | 2014-08-13 | 2014-12-31 | 黑龙江工程学院 | The double-deck anti-bending suspension device of City Buried Pipeline |
| CN205152782U (en) * | 2015-12-03 | 2016-04-13 | 核工业西南勘察设计研究院有限公司 | High -damp rubber support |
| CN106808759A (en) * | 2017-01-10 | 2017-06-09 | 西安交通大学 | Wavy metal metal-rubber composite and preparation method thereof |
| CN108302254A (en) * | 2018-03-30 | 2018-07-20 | 福州大学 | Metal-rubber winds coated piping installation and application method |
| CN108331982A (en) * | 2018-03-30 | 2018-07-27 | 福州大学 | Multiple layer metal rubber bag applies piping installation and its working method |
| CN208074317U (en) * | 2018-03-30 | 2018-11-09 | 福州大学 | Multiple layer metal rubber bag applies piping installation |
| CN112026824A (en) * | 2020-08-18 | 2020-12-04 | 株洲时代瑞唯减振装备有限公司 | Axle box positioning method, axle box overhead node and railway vehicle |
-
2021
- 2021-10-29 CN CN202111271214.9A patent/CN113915444A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1746080A1 (en) * | 1989-11-20 | 1992-07-07 | Самарский авиационный институт им.акад.С.П.Королева | Springy-damping skidding support |
| RU2020311C1 (en) * | 1991-05-20 | 1994-09-30 | Самарский государственный аэрокосмический университет | Damper |
| RU55310U1 (en) * | 2006-02-21 | 2006-08-10 | Государственное образовательное учреждение высшего профессионального образования Самарский государственный аэрокосмический университет имени академика С.П. Королева | Vibration Isolator |
| CN204062168U (en) * | 2014-08-13 | 2014-12-31 | 黑龙江工程学院 | The double-deck anti-bending suspension device of City Buried Pipeline |
| CN104164835A (en) * | 2014-08-15 | 2014-11-26 | 铁道第三勘察设计院集团有限公司 | High-damping vibration attenuation rubber support for bridge |
| CN205152782U (en) * | 2015-12-03 | 2016-04-13 | 核工业西南勘察设计研究院有限公司 | High -damp rubber support |
| CN106808759A (en) * | 2017-01-10 | 2017-06-09 | 西安交通大学 | Wavy metal metal-rubber composite and preparation method thereof |
| CN108302254A (en) * | 2018-03-30 | 2018-07-20 | 福州大学 | Metal-rubber winds coated piping installation and application method |
| CN108331982A (en) * | 2018-03-30 | 2018-07-27 | 福州大学 | Multiple layer metal rubber bag applies piping installation and its working method |
| CN208074317U (en) * | 2018-03-30 | 2018-11-09 | 福州大学 | Multiple layer metal rubber bag applies piping installation |
| CN112026824A (en) * | 2020-08-18 | 2020-12-04 | 株洲时代瑞唯减振装备有限公司 | Axle box positioning method, axle box overhead node and railway vehicle |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114458711A (en) * | 2022-01-22 | 2022-05-10 | 福州大学 | Universal shock absorber structure for improving metal rubber shock absorption effect |
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