CN102717885A - Horizontal floating raft vibration isolation device - Google Patents
Horizontal floating raft vibration isolation device Download PDFInfo
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- CN102717885A CN102717885A CN2012102112873A CN201210211287A CN102717885A CN 102717885 A CN102717885 A CN 102717885A CN 2012102112873 A CN2012102112873 A CN 2012102112873A CN 201210211287 A CN201210211287 A CN 201210211287A CN 102717885 A CN102717885 A CN 102717885A
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Abstract
The invention relates to a truss vibration isolation device for installing main and auxiliary machines of a ship and a submarine, in particular to a horizontal floating raft vibration isolation device. The horizontal floating raft vibration isolation device disclosed by the invention comprises an upper panel, a truss structure and a lower panel which are sequentially connected; and the truss structure comprises a plurality of truss periodic structure layers. Compared with the prior art, the horizontal floating raft vibration isolation device disclosed by the invention comprehensively applies a stop band and pass band mechanism generated by a periodic structure and an impedance transformation effect of the truss structure, so that mass and stiffness parameters of a floating raft device are optimally distributed, the vibration damping effect of the floating raft device is improved and the vibration isolation performance of the floating raft device can be obviously improved.
Description
Technical field
The present invention relates to the truss isolation mounting that a kind of main and auxiliary machine that is used for naval vessel and submarine is installed, particularly a kind of flat placed type Buoyant Raft Shock-resistant System.
Technical background
Submarine is being born the task of defending national marine Homeland Security, maintenance and guarantee maritime rights and interests as naval's trump card weapon and movable strategic arms platform.Since cold war finished, world military power was main objective with the submarine, made up underwater 3 D three-dimensional probe sonar network system, realized super-long-range detection under water, improved antisubmarine detectability, and China's submarine sound stealth technology has been proposed stern challenge.Strengthen the stealthy performance of submarine sound and become the comprehensive penetration ability of raising China's submarine, viability and fighting efficiency, and obtain the important channel of strategy, tactical advantage.
Submarine noise is divided into three big noise sources such as mechanical noise, propeller noise and hydrodynamic noise, and its overriding noise source characteristic is the stack of strong line spectrum and weakly continuous spectrum.Mechanical noise is essentially pure audio-frequency noise, and its frequency spectrum is a line spectrum, and frequency limit is 10Hz～1000Hz, mainly comprises main and auxiliary machine running, duct noise and airborne noise.Test shows; Submarine is under the electric propulsion operating mode; Noise during lowsteaming is mainly from mechanical noise; Account for about 70% of global radiation noise level, a running that is mainly derived from main and auxiliary machine of submarine in-to-in and axle system is through buoyant raft, pedestal transmission and excitation housing, causes hull vibration and radiated noise in the aqueous medium towards periphery.As vibration damping/vibration-isolating platform, buoyant raft is at present mechanical equipment vibration to be concentrated the preferred approach of isolating.Buoyant Raft Shock-resistant System is that all mechanical equipment elasticity or rigidity in the whole cabin are installed on the public buoyant raft raft body; The raft body elasticity supports or is suspended on the housing structure; Reduce mechanical vibration through mechanical insulated with method vibration damping, thereby reduce the radiated noise of submarine.
To the Buoyant Raft Shock-resistant System of the unit equipment on submarine and the naval vessel,, need under little quality small size, realize trying one's best big vibration damping owing to receiving reasons such as qualitative restrain and dimension constraint.Present Buoyant Raft Shock-resistant System mainly is welded by flat board, according to the version branch, mainly contains dull and stereotyped box buoyant raft, V-type buoyant raft and complicated V-type buoyant raft.These buoyant rafts do not make full use of the attenuating mechanism between each sub-structures in the buoyant raft, and quality and Stiffness Distribution are unreasonable, can't form wide band vibration damping.
Summary of the invention
The object of the invention is to provide a kind of flat placed type Buoyant Raft Shock-resistant System; All kinds of buoyant rafts do not make full use of the attenuating mechanism between each sub-structures in the buoyant raft in the prior art to solve; Quality and Stiffness Distribution are unreasonable, can't form the technical matters of wide band vibration damping.
The object of the invention realizes through following technical scheme:
A kind of flat placed type Buoyant Raft Shock-resistant System comprises bonded assembly top panel, truss structure and lower faceplate successively, and said truss structure comprises some truss periodic structure layers.
Preferably, said truss periodic structure layer comprises several truss periodic structures, is respectively arranged with a plurality of truss periodic structures at said truss periodic structure layer horizontal and vertical, and said truss periodic structure is in horizontal and vertical formation periodic arrangement.
Preferably, said truss periodic structure comprises some vertical beams and some crossbeams, and said vertical beam connects through said crossbeam, and said vertical beam can be with said crossbeam that the L type is connected or the connection of T type.
Preferably, adjacent truss periodic structure layer connects through vertical tie-beam, and said truss periodic structure in the vertical direction is periodic arrangement.
Preferably, said laterally adjacent truss periodic structure connects through horizontal tie-beam.
Preferably, said truss periodic structure and said horizontal tie-beam or said vertical tie-beam bonded assembly junction are provided with mass, and the junction of said vertical beam and said crossbeam is provided with mass.
Preferably, but said horizontal tie-beam, said vertical tie-beam, said vertical beam and said crossbeam fill fluid material or discrete material.
Preferably, the outside of said horizontal tie-beam, said vertical tie-beam, said vertical beam and said crossbeam can coat damping material.
Preferably, said top panel is provided with the upper strata vibration isolator, and said lower faceplate is provided with lower floor's vibration isolator.
Compared with prior art, the present invention has following beneficial effect:
1, flat placed type Buoyant Raft Shock-resistant System of the present invention integrated application the effect of the impedance conversion that had of the stopband passband mechanism that produces of periodic structure and truss structure; Make quality and stiffness parameters optimization in the buoyant raft device distribute; Increased the vibration-damping effect in the buoyant raft device, its anti-vibration performance is significantly improved;
2, the weight of flat placed type Buoyant Raft Shock-resistant System of the present invention is adjustable, and compact conformation is convenient to install.
Description of drawings
Fig. 1 is the schematic three dimensional views of flat placed type Buoyant Raft Shock-resistant System of the present invention;
Fig. 2 is the lateral plan of truss structure of the present invention;
Fig. 3 is the birds-eye view of truss structure of the present invention;
Fig. 4 is the birds-eye view of flat placed type Buoyant Raft Shock-resistant System of the present invention;
Fig. 5 is the upward view of flat placed type Buoyant Raft Shock-resistant System of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing, specify the present invention.
See also Fig. 1-5, flat placed type Buoyant Raft Shock-resistant System of the present invention comprises bonded assembly top panel 1, truss structure 2 and lower faceplate 3 successively, and truss structure 2 comprises some truss periodic structure layers 21.
Truss periodic structure layer 21 comprises several truss periodic structures 211; Be respectively arranged with a plurality of truss periodic structures 211 at truss periodic structure layer 21 horizontal and vertical; The truss periodic structure is in horizontal and vertical formation periodic arrangement; Be that a plurality of truss periodic structures are arranged in horizontal and vertical difference regularly, but not random alignment.Truss periodic structure 211 comprises some vertical beams 2111 and some crossbeams 2112, and vertical beam connects through crossbeam, and junction 6 is provided with mass; Mass plays the effect of impedance mismatching; Make the vibration majority of high frequency be reflected, and do not transmit that the wave mode conversion effect is better.Vertical beam 2111 and crossbeam 2112 can be that the L type is connected or the T type connects, and be as shown in Figure 1.
Adopt vertical tie-beam 5 to connect between the truss periodic structure layer 21, vertical tie-beam 5 is connected with the crossbeam 2112 of truss periodic structure 211.Junction 6 is provided with mass, and mass plays the effect of impedance mismatching, makes the vibration majority of high frequency be reflected, and do not transmit that the wave mode conversion effect is better.Truss periodic structure 211 is periodic arrangement at vertical direction, and promptly a plurality of truss periodic structures are arranged at vertical direction regularly, but not random alignment.Adjacent truss periodic structure 21 connects through horizontal tie-beam 4, and laterally tie-beam 4 can be with the vertical beam 2111 of truss periodic structure 21 that the T type is connected or the connection of L type.
For increasing the further waste of power of vibration transfer; Can be arranged to box girder to vertical beam, crossbeam, vertical tie-beam and horizontal tie-beam, and then add absorbing materials such as a fluid or a prose style free from parallelism, also can coat damping material on the box girder surface; Increase damping, make it can suppress vibration to greatest extent.
Top panel 1 is provided with the upper strata vibration isolator, and lower faceplate 3 is provided with lower floor's vibration isolator.Wherein top panel 1 is connected through bolt hole with upper and lower vibration isolator respectively with lower faceplate 3.When vibration passed to each truss periodic structure 211 through top panel 1, vibration can produce impedance mismatching and wave mode transition effects in transmittance process.The flexural wave that in the truss periodic structure of vertical direction, transmits can be converted into compressional wave and the flexural wave in the horizontal truss periodic structure, and the mass at each point of connection place plays the effect of impedance mismatching, makes the vibration majority of high frequency be reflected, and does not transmit.Through multilayer vibration damping, can in truss structure 2, form standing wave like this, vibration is converted into the bending vibrattion of truss periodic structure, performance period structure the wide frequency band band gap.
Flat placed type Buoyant Raft Shock-resistant System of the present invention integrated application the effect of the impedance conversion that had of the stopband passband mechanism that produces of periodic structure and truss structure; Make quality and stiffness parameters optimization in the buoyant raft device distribute; Increased the vibration-damping effect in the buoyant raft device, its anti-vibration performance is significantly improved; And the weight of flat placed type Buoyant Raft Shock-resistant System of the present invention is adjustable, and compact conformation is convenient to install.
More than the disclosed several specific embodiments that are merely the application, but the application is not limited thereto, any those skilled in the art can think variation, all should drop in the application's the protection domain.
Claims (9)
1. a flat placed type Buoyant Raft Shock-resistant System is characterized in that, comprises bonded assembly top panel, truss structure and lower faceplate successively, and said truss structure comprises some truss periodic structure layers.
2. a kind of flat placed type Buoyant Raft Shock-resistant System as claimed in claim 1; It is characterized in that; Said truss periodic structure layer comprises several truss periodic structures; Be respectively arranged with a plurality of truss periodic structures at said truss periodic structure layer horizontal and vertical, said truss periodic structure is in horizontal and vertical formation periodic arrangement.
3. a kind of flat placed type Buoyant Raft Shock-resistant System as claimed in claim 2 is characterized in that said truss periodic structure comprises some vertical beams and some crossbeams, and said vertical beam connects through said crossbeam, and said vertical beam can be with said crossbeam that the L type is connected or the connection of T type.
4. a kind of flat placed type Buoyant Raft Shock-resistant System as claimed in claim 3 is characterized in that, adjacent truss periodic structure layer connects through vertical tie-beam, and said truss periodic structure in the vertical direction is periodic arrangement.
5. a kind of flat placed type Buoyant Raft Shock-resistant System as claimed in claim 4 is characterized in that, laterally adjacent truss periodic structure connects through horizontal tie-beam.
6. a kind of flat placed type Buoyant Raft Shock-resistant System as claimed in claim 5; It is characterized in that; Said truss periodic structure is provided with mass through said horizontal tie-beam or said vertical tie-beam bonded assembly junction, and the junction of said vertical beam and said crossbeam bonded assembly is provided with mass.
7. like claim 5 or 6 described a kind of flat placed type Buoyant Raft Shock-resistant System, it is characterized in that, but said horizontal tie-beam, said vertical tie-beam, said vertical beam and said crossbeam fill fluid material or discrete material.
8. a kind of flat placed type Buoyant Raft Shock-resistant System as claimed in claim 7 is characterized in that, the outside of said horizontal tie-beam, said vertical tie-beam, said vertical beam and said crossbeam can coat damping material.
9. a kind of flat placed type Buoyant Raft Shock-resistant System as claimed in claim 1 is characterized in that said top panel is provided with the upper strata vibration isolator, and said lower faceplate is provided with lower floor's vibration isolator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102112873A CN102717885A (en) | 2012-06-26 | 2012-06-26 | Horizontal floating raft vibration isolation device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102112873A CN102717885A (en) | 2012-06-26 | 2012-06-26 | Horizontal floating raft vibration isolation device |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103267084A (en) * | 2013-06-04 | 2013-08-28 | 中国船舶重工集团公司第七○二研究所 | Three-dimensional frame type buoyant raft vibration isolation device |
| CN103350738A (en) * | 2013-07-11 | 2013-10-16 | 中国船舶重工集团公司第七○二研究所 | Shearing installation base with high impedance |
| CN103754349A (en) * | 2014-01-26 | 2014-04-30 | 中国船舶重工集团公司第七�三研究所 | Vibration isolation system of marine main steamer gear unit |
| CN104595418A (en) * | 2015-02-02 | 2015-05-06 | 江苏高精机电装备有限公司 | Periodic-structure vibration isolation device based on bandgap filtration and waveform conversion |
| CN104776142A (en) * | 2015-04-09 | 2015-07-15 | 江苏高精机电装备有限公司 | Tower type floating raft arrangement |
| 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 |
| 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 |
| CN111532403A (en) * | 2020-05-15 | 2020-08-14 | 中国科学院声学研究所 | Formula cabin raft is embraced in sinking |
| CN112009619A (en) * | 2020-09-03 | 2020-12-01 | 中国人民解放军海军工程大学 | Tuning particle damping type floating raft |
| CN113815825A (en) * | 2021-10-26 | 2021-12-21 | 中国舰船研究设计中心 | Efficient damping raft frame based on L-shaped continuation structure |
| CN115492894A (en) * | 2022-08-04 | 2022-12-20 | 哈尔滨工程大学 | Efficient vibration-damping base supported by liquid bags on chain type panel |
| CN116374077A (en) * | 2023-04-07 | 2023-07-04 | 中国船舶科学研究中心 | Modularized truss type floating raft vibration isolation device and vibration isolation stabilization method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2317356Y (en) * | 1998-03-16 | 1999-05-05 | 梁荣 | Compound vibration-damper |
| JP2002235457A (en) * | 2001-02-08 | 2002-08-23 | Sumitomo Metal Ind Ltd | Vibration control device and vibration control structure of joint part |
| CN201090651Y (en) * | 2007-08-23 | 2008-07-23 | 中国船舶重工集团公司第七一一研究所 | Improved floating raft |
| CN102338190A (en) * | 2011-07-07 | 2012-02-01 | 中国船舶重工集团公司第七○二研究所 | Truss-type floating raft vibration isolation device |
-
2012
- 2012-06-26 CN CN2012102112873A patent/CN102717885A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2317356Y (en) * | 1998-03-16 | 1999-05-05 | 梁荣 | Compound vibration-damper |
| JP2002235457A (en) * | 2001-02-08 | 2002-08-23 | Sumitomo Metal Ind Ltd | Vibration control device and vibration control structure of joint part |
| CN201090651Y (en) * | 2007-08-23 | 2008-07-23 | 中国船舶重工集团公司第七一一研究所 | Improved floating raft |
| CN102338190A (en) * | 2011-07-07 | 2012-02-01 | 中国船舶重工集团公司第七○二研究所 | Truss-type floating raft vibration isolation device |
Non-Patent Citations (1)
| Title |
|---|
| 程世祥等: "周期桁架结构浮筏隔振特性分析与实验研究", 《噪声与振动控制》, no. 6, 31 December 2011 (2011-12-31) * |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103267084A (en) * | 2013-06-04 | 2013-08-28 | 中国船舶重工集团公司第七○二研究所 | Three-dimensional frame type buoyant raft vibration isolation device |
| CN103350738A (en) * | 2013-07-11 | 2013-10-16 | 中国船舶重工集团公司第七○二研究所 | Shearing installation base with high impedance |
| CN103350738B (en) * | 2013-07-11 | 2015-11-18 | 中国船舶重工集团公司第七○二研究所 | A kind of shearing mounting base with high resistance |
| CN103754349A (en) * | 2014-01-26 | 2014-04-30 | 中国船舶重工集团公司第七�三研究所 | Vibration isolation system of marine main steamer gear unit |
| CN103754349B (en) * | 2014-01-26 | 2016-01-20 | 中国船舶重工集团公司第七�三研究所 | Vibration isolation system of marine main steamer gear unit |
| CN104595418A (en) * | 2015-02-02 | 2015-05-06 | 江苏高精机电装备有限公司 | Periodic-structure vibration isolation device based on bandgap filtration and waveform conversion |
| CN104776142A (en) * | 2015-04-09 | 2015-07-15 | 江苏高精机电装备有限公司 | Tower type floating raft arrangement |
| 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 |
| 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 |
| 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 |
| CN111532403A (en) * | 2020-05-15 | 2020-08-14 | 中国科学院声学研究所 | Formula cabin raft is embraced in sinking |
| CN112009619A (en) * | 2020-09-03 | 2020-12-01 | 中国人民解放军海军工程大学 | Tuning particle damping type floating raft |
| CN113815825A (en) * | 2021-10-26 | 2021-12-21 | 中国舰船研究设计中心 | Efficient damping raft frame based on L-shaped continuation structure |
| CN115492894A (en) * | 2022-08-04 | 2022-12-20 | 哈尔滨工程大学 | Efficient vibration-damping base supported by liquid bags on chain type panel |
| CN115492894B (en) * | 2022-08-04 | 2023-05-23 | 哈尔滨工程大学 | Efficient vibration reduction base supported by chained panel liquid bags |
| CN116374077A (en) * | 2023-04-07 | 2023-07-04 | 中国船舶科学研究中心 | Modularized truss type floating raft vibration isolation device and vibration isolation stabilization method |
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Application publication date: 20121010 |