CN204489164U - A kind of shock attenuation unit based on impact damper system - Google Patents
A kind of shock attenuation unit based on impact damper system Download PDFInfo
- Publication number
- CN204489164U CN204489164U CN201420749821.0U CN201420749821U CN204489164U CN 204489164 U CN204489164 U CN 204489164U CN 201420749821 U CN201420749821 U CN 201420749821U CN 204489164 U CN204489164 U CN 204489164U
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- seal
- main engine
- impact damper
- damping
- shock attenuation
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Abstract
The utility model relates to antivibration area, refer in particular to a kind of shock attenuation unit based on impact damper system, comprise hull, main engine seating, some seal chambers, some seal chambers are located between the longitudinal girder of main engine seating two, some seal chambers are connected with cavity, cavity is connected on pedestal, each seal chamber inwall is equipped with viscoelastic damping, is provided with some quality point in seal chamber.The utility model, on the basis of existing vibration reducing measure, makes full use of the space between the longitudinal girder of main engine seating two, arranges multiplely to scribble visco-elastic damping material Impact damper between two girder for seats, and structure is simple, and damping frequency is wide, good damping result.
Description
Technical field
The utility model relates to cushion technique field, refers in particular to a kind of shock attenuation unit based on impact damper system.
Background technology
Since entering 21st century, the vibration and noise problem of boats and ships more and more receives the concern of people.The vibration of power plant is as the main source of Ship Vibration, noise, not only can affect the normal performance of main engine power, also can cause the decline of the structure fatigue life such as gear, bearing, even cause the fracture of structure, distortion, power plant cannot normally be worked, and boats and ships can not normally run.Therefore, how taking measures the reducing vibration passing of main frame not only has urgent actual demand, is also to one of full ship most effective way of carrying out vibration and noise reducing.
Current domestic boats and ships take in main frame to main engine seating vibration passing process vibration reducing measure mainly contain damping, vibration isolation technique and vibration isolation mass.Damping has the advantages that to carry out effective noise reduction when not changing the original design and equipment in naval vessel, especially has special-effect to the control of wide frequency band random vibration and noise.Vibration isolation technique is generally installed on hull pedestal by vibrating isolation system, or is directly installed on hull.Boats and ships passive vibration isolation system mainly contains: single-layer partiting polarization system, double-layer vibration isolating system and buoyant raft shock-resistant system.Single-layer partiting polarization is not suitable for the vibration isolation of slow speed of revolution main equipment; Double-layer vibration isolating has good vibration isolating effect, can avoid the deficiency of single-layer partiting polarization system stability difference, but intermediate mass is excessive again limit the application on boats and ships; Multiple devices are shared an intermediate mass and carries out buoyant raft vibration isolation, multiple devices centralized arrangement, each other quality, greatly reduce the quality of middle raft body, and saved space, make design have greater flexibility, easily meet the requirement of general design; Through reasonably design, buoyant raft device can have good vibration isolating effect.
Although by above-mentioned a series of oscillation damping method, current shipbuilding industry achieves certain success and development in vibration and noise reducing, but also far from can reach the requirement of the mankind, especially 2012 International Maritime Organization (IMO) (IMO) Maritime Safety Committee (MSC) have approved revised draft to " on ship noise level rule ", and formally effective in 1 day July in 2014, stricter standard is proposed to Ship Vibration and Noise measarement.This is just in the urgent need to developing new oscillation damping method, and in conjunction with existing vibration damping, vibration protection, controls further to the vibration of boats and ships and transmission thereof.
Utility model content
For above problem, the utility model provides a kind of vibration passing for reducing between marine main engine and pedestal, suppresses the shock attenuation unit of structure acoustic radiation.
To achieve these goals, the technical solution adopted in the utility model is as follows:
A kind of shock attenuation unit based on impact damper system, comprise hull, main engine seating, some seal chambers, some seal chambers are located between main engine seating two stringers, and some seal chambers are connected with cavity, and cavity is connected to hull, each seal chamber inwall is equipped with viscoelastic damping, in seal chamber, is provided with some quality point.
Further, some seal chambers link together.
Further, some quality point are that the iron ball that radius is very little is arranged.
The beneficial effects of the utility model:
The utility model, on the basis of existing vibration reducing measure, makes full use of the space between the longitudinal girder of main engine seating two, arranges multiplely to scribble visco-elastic damping material Impact damper between two girder for seats, and structure is simple, and damping frequency is wide, good damping result.
Accompanying drawing explanation
Fig. 1 is the utility model integral structure schematic diagram.
In figure: 1, hull; 2, quality point; 3, main engine seating; 4, cavity; 5, viscoelastic damping; 6, seal chamber; 7, main frame.
Detailed description of the invention
Below in conjunction with accompanying drawing and embodiment, the technical solution of the utility model is described.
As shown in Figure 1, a kind of shock attenuation unit based on impact damper system described in the utility model, comprise hull 1, main engine seating 3, some seal chambers 6, some seal chambers 6 are located between main engine seating 3 liang of longitudinal girders, some seal chambers 6 are connected with cavity 4, cavity 4 is connected to hull 1, each seal chamber 6 inwall is equipped with viscoelastic damping 5, is provided with some quality point 2 in seal chamber 6.More than form the utility model basic structure.
The utility model preferably adopts and be provided with 6 seal chambers 6 between main engine seating 3 liang of longitudinal girder, when main frame 7 operates, generation is vibrated by it, then main engine seating 3 is passed to, main engine seating 3 is passed to again seal chamber 6, the some quality point 2 be located in seal chamber 6 are caused to produce motion, collide, when vibration can be there is and produces distortion in seal chamber 6, the viscoelastic damping 5 be located on inwall also and then produces distortion, because viscoelastic damping 5 has stress, the feature that strain curve is slow, energy when a large amount of consumption s tructure of viscoelastic damping 5 energy vibrates, continue and be converted into heat energy, simultaneously, the some quality point 2 be located in seal chamber 6 also can absorb energy and occur mutually to collide loss of energy, and clash into viscoelastic damping 5, be heat energy by kinetic transformation.
The utility model adopts and is linked together by 6 seal chambers 6, can strengthen effectiveness in vibration suppression further.
Some quality point 2 described in the utility model preferably adopt the iron ball that radius is very little to arrange, its radius is little, quantity is large, pulsating pressure is produced when can not vibrate seal chamber 6, and visco-elastic damping material inherently has good effectiveness in vibration suppression because distortion absorbs energy, when quality point impinges upon on visco-elastic damping material, understand a large amount of energy of loss and can not noise be produced.
Be more than the utility model preferably embodiment, the utility model those skilled in the art can also change above-mentioned embodiment and revise.Therefore, the utility model is not limited to above-mentioned detailed description of the invention, and any apparent improvement that every those skilled in the art do on basis of the present utility model, replacement or modification all belong to protection domain of the present utility model.
Claims (3)
1. the shock attenuation unit based on impact damper system, comprise hull (1), main engine seating (3), some seal chambers (6), it is characterized in that: described some seal chambers (6) are located between the longitudinal girder of main engine seating (3) two, described some seal chambers (6) are connected with cavity (4), described cavity (4) is connected to hull (1), described each seal chamber (6) inwall is equipped with viscoelastic damping (5), in described seal chamber (6), is provided with some quality point (2).
2. a kind of shock attenuation unit based on impact damper system according to claim 1, is characterized in that: described some seal chambers (6) link together.
3. a kind of based on impacting the shock attenuation unit of damping according to claim 1, it is characterized in that: described some quality point (2) are arranged for the iron ball that radius is very little.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420749821.0U CN204489164U (en) | 2014-12-03 | 2014-12-03 | A kind of shock attenuation unit based on impact damper system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420749821.0U CN204489164U (en) | 2014-12-03 | 2014-12-03 | A kind of shock attenuation unit based on impact damper system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204489164U true CN204489164U (en) | 2015-07-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420749821.0U Expired - Fee Related CN204489164U (en) | 2014-12-03 | 2014-12-03 | A kind of shock attenuation unit based on impact damper system |
Country Status (1)
| Country | Link |
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| CN (1) | CN204489164U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107323646A (en) * | 2017-06-23 | 2017-11-07 | 武汉理工大学 | A kind of combined type carbon fibre composite vibration isolation raft frame and preparation method thereof |
| CN107891952A (en) * | 2017-07-19 | 2018-04-10 | 中国船舶工业集团公司第七0八研究所 | A kind of main engine foundation bottom high-pressure water tank |
| CN109720531A (en) * | 2019-01-28 | 2019-05-07 | 江苏科技大学 | A kind of locally resonant buoyant raft raft body isolation mounting |
| CN114771797A (en) * | 2022-01-25 | 2022-07-22 | 重庆大学 | Steering engine vibration reduction base with viscoelastic material filled curved bar lattice structure and manufacturing method thereof |
-
2014
- 2014-12-03 CN CN201420749821.0U patent/CN204489164U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107323646A (en) * | 2017-06-23 | 2017-11-07 | 武汉理工大学 | A kind of combined type carbon fibre composite vibration isolation raft frame and preparation method thereof |
| CN107323646B (en) * | 2017-06-23 | 2020-05-05 | 武汉理工大学 | Combined type carbon fiber composite material vibration isolation raft frame and preparation method thereof |
| CN107891952A (en) * | 2017-07-19 | 2018-04-10 | 中国船舶工业集团公司第七0八研究所 | A kind of main engine foundation bottom high-pressure water tank |
| CN107891952B (en) * | 2017-07-19 | 2019-11-22 | 中国船舶工业集团公司第七0八研究所 | A kind of main engine foundation bottom high-pressure water tank |
| CN109720531A (en) * | 2019-01-28 | 2019-05-07 | 江苏科技大学 | A kind of locally resonant buoyant raft raft body isolation mounting |
| CN114771797A (en) * | 2022-01-25 | 2022-07-22 | 重庆大学 | Steering engine vibration reduction base with viscoelastic material filled curved bar lattice structure and manufacturing method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150722 Termination date: 20151203 |
|
| EXPY | Termination of patent right or utility model |