CN207619865U - A kind of high-speed rail sound barrier of high-efficient noise-reducing - Google Patents
A kind of high-speed rail sound barrier of high-efficient noise-reducing Download PDFInfo
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- CN207619865U CN207619865U CN201720954188.2U CN201720954188U CN207619865U CN 207619865 U CN207619865 U CN 207619865U CN 201720954188 U CN201720954188 U CN 201720954188U CN 207619865 U CN207619865 U CN 207619865U
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- sound
- sound barrier
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- sound absorber
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Abstract
The utility model is related to a kind of metal sound barrier used for high-speed railway, it is characterized in that in the cavity for playing the metal composite noise elimination plate of main Noise Reduction in sound barrier, uses the sound absorber with aeroge composite layer.By importing silica aerogel material on sound absorber, using the big specific surface area of aeroge and high hole rate characteristic, sound barrier entirety noise reduction is improved.（Attached drawing 1 is sound barrier primary mounting structure schematic diagram）.The utility model proposes a kind of embodiment that the surface spraying of the silica aerogel powder using low-cost high-efficiency applied to the structure coheres simultaneously, on the basis of not changing existing product installation shape framework, being formed reduces acoustic energy transmission, is effectively improved the denoising structure for absorbing high-frequency vibration.
Description
Technical field
The utility model belongs to high speed railway foundation and builds supporting technology and environmental technology field.
Background technology
China express railway career development is swift and violent, with the continuous breakthrough of key technology, is built to every basis such as sound barrier
If supporting technology also constantly propose new challenge, for the environmental protection requirement of sound pollution, be also continuously improved.
The main noise of high-speed railway is mainly wheel-rail noise, electromagnetic noise and aerodynamic noise.When speed is more than
250km/h, aerodynamic noise rise to most important noise factor, and have and promoted and increased trend with speed.
Utility model content
In the prior art, high-speed railway metallic sound barrier product includes mainly groove profile in structure or comparative maturity
Column, metal composite noise elimination plate are fixedly connected with auxiliary etc., and wherein metal composite noise elimination plate is noise reduction main body, multiple in metal
In the cavity that each sheet metal of conjunction noise elimination plate is surrounded, filling plays the suction of core with the sound absorption cotton such as rock wool and glass silk floss
Sound acts on.Sound wave, into the fluffy fiber sound absorber full of air, transmits after through metal perforated plate along fiber, and sound passes
Guiding path is extended considerably, and as the vibration of air in sound absorber is largely converted into thermal energy and is weakened.
The sound absorbers material such as the rock wool generally used at present and glass silk floss, the mode for being easiest to failure lose when being water suction
Air between fiber, and formed hardened.And high-speed rail sound barrier use various natural environment wind, rain, dirt weather conditions under, moisture
Can cavity inevitably be entered by metal perforated plate, it is final to reduce sound absorption to be had an impact to the sound absorber in cavity
The sound absorption effect of body and shorten the working life.Sound absorber is handled by the methods of closing at present, can not be solved well
The certainly problem.And to the sound wave of different frequency, sound insulation and the sound-absorbing effect of different materials are different, generally use at present
Sound absorber material, it is preferable to Middle and low frequency noise effect since the subtle degree of hole is relatively low, and to high frequency section, effect is on the weak side.
Technical problem to be solved in the utility model is for the defects of existing above-mentioned technology, using low-cost high-efficiency
The SiO 2 powder surface spraying bonding mode of rate forms drop on the basis of not changing existing product installation shape framework
In a low voice energy transmission, be effectively improved absorb high-frequency vibration denoising structure.
The utility model uses following technical scheme to solve above-mentioned technical problem：
The utility model is related to a kind of metal sound barrier used for high-speed railway, it is characterized in that main noise reduction is played in sound barrier to be made
In composite metal plate cavity, using the sound absorber with aeroge composite layer, it is followed successively by (1) groove profile column, (2) gold
Belong to composite sound damping plate, (3) upper cover plate, (4) metal perforated plate, (5) metal backing, (6) aeroge sprayed coating, (7) sound absorption cotton
Layer, (8) intermediate pads, (9) coupling plate, in the metal component cavity that both sides are surrounded, suction of the addition with aeroge composite layer
Sound body (see attached drawing 1,2).
By importing silica aerogel material on sound absorber, the big specific surface area of aeroge and high hole rate are utilized
Characteristic improves sound barrier entirety noise reduction.
The utility model is had the following technical effect that compared with prior art using above technical scheme：
Technical solution used by the utility model is by this nanometer materials of aerosil in original sound absorption
It is subject on material foundation compound.According to mass law principle, the intensive surface density of unit of material is bigger, and absorption is bigger, inhales
Sound surface density and absorption are proportional, and according to micropunch theory, micropore is smaller closeer, and sound absorption effect is better.Aeroge
The big specific surface area having and high hole rate characteristic, unit mass itself is extremely light, and voidage is again high, is super sound absorption material
Material.Meanwhile nano level hole also has apparent assimilation effect for high-frequency audio frequency, to make up present scheme
The weak problem of existing high frequency acoustical absorptivity, can further increase the comprehensive Noise Reduction ability of sound barrier.
Secondly, the nanometer micropore of aeroge has hydrophobicity, after forming composite material, acoustic(al)absorbent can be made to have hydrophobic
Property, ambient moisture is prevented through sound absorber is penetrated into after metal perforated plate, to achieve the effect that prolong the service life.And lower to gold
The trepanning degree design constraint for belonging to the water-impervious of orifice plate, is such as changed to slot hole or blinds hole by circular hole, to be set in economy and beauty
It is more flexible on meter.
It is higher in view of the cost for the aerogel blanket for being usually used in high temperature insulating in terms of specific embodiment, in conjunction with
The natural environment operating mode that the present invention uses, selection are formed suitable using the method that existing sound absorber directly carries out surface spraying is depended on
Lower cost solution structure for high-speed rail sound barrier applying working condition.
Description of the drawings
Fig. 1,2 are a kind of structural schematic diagram of the high-speed rail sound barrier of high-efficient noise-reducing of the utility model；
Wherein, each reference numeral is：
1- groove profile columns, 2- metal composite noise elimination plates, 3- upper cover plates, 4- metal perforated plates, 5- metal backings, 6- aeroges
Sprayed coating, 7- sound absorption cotton layers, 8- intermediate pads, 9- coupling plates.
Specific implementation mode
The technical solution of the utility model is described in further detail below in conjunction with the accompanying drawings.
As shown in Figure 1, the utility model embodiment provides a kind of high-speed rail sound barrier of high-efficient noise-reducing, including (1) is slot
Type column plays a connection ground and takes root supporting role；(2) it is metal composite noise elimination plate (hereinafter referred to as " plate "), is inserted into groove profile
In the slot of column, play noise elimination, and bear the impact of high ferro wind pressure, while load transmission to groove profile column being born；(3) it is slotting
Top (lower part is similarly) covering plate of plate, and directly bears high ferro wind pressure face and plays the role of the metal perforated plate (4), backwards of noise elimination
The metal backing (5) in wind pressure face surrounds cavity, inorganic cotton sound absorber (7) is installed in cavity jointly；There is spraying two on sound absorber surface
Silica aerogel layer (6)；By coupling plate (9), connector (10) and other compress rubber, the accessories such as screws, group
It dresses up as complete metal sound barrier sound insulation sound absorption structure.
The order goods amount big duration of sound barrier tight situation is used in view of high ferro, aeroge spraying, which uses, first obtains sound absorber
The scheme that scale base material sprays again customizes sound absorber specification according to sound barrier cavity size, spraying airsetting is carried out to sound absorber
After glue, rapid airing is installed again.
It sprays aeroge and uses hydrophobic type silica aerogel powder, it is excellent to the particle size of powder without strict demand
Based on average 100 μm or so the crystal grain of choosing.
First prepare general chopped strand such as glass silk floss, with modified E51 epoxy resin adhesives micro capsule curing agent, sweet
Oily ether diluent etc. carries out high speed centrifugation and stirs evenly dispersion mixing by a certain percentage, and sprayable carrier fibre powder epoxy glue is made
Glutinous agent.
Using special two-way spraying equipment by sprayable carrier fibre powder epoxy adhesive and aerosil powder by
High speed sprays two-way simultaneously respectively, when being sprayed by nozzle, port then, it is different according to the shape of matrix surface, be adjusted to one
Constant-pressure, even application are compounded to form new absorbent treatment in matrix surface.Carrier chopped strand is attached to matrix material by gluing
Expect surface, and aeroge is then uniformly distributed and is attached on carrier fibre, adhesive strength is high, and good manufacturability is water-fast, weather-proof.
Spraying can be carried out in sound absorber single side, two-sided and both sides, it is contemplated that cost effectiveness, preferred embodiment are towards metal
Hole plate face carries out the structure (such as 2 structure of attached drawing) of single side spraying.In view of the synthesis cost effectiveness of sound absorption effect and material cost, spray
It is preferred that the thickness of painting airsetting rubber powder, which is set as 0.05-0.2mm,.
Specific embodiment of the utility model is described in detail above, but it is only used as example, the utility model
It is not restricted to particular embodiments described above.To those skilled in the art, any that the practicality is equal
Modifications and substitutions are also all among the scope of the utility model.Therefore, the institute under the spirit and scope for not departing from the utility model
The impartial conversion of work and modification should all be covered in the scope of the utility model.
Claims (2)
1. a kind of high-speed rail sound barrier structure of high-efficient noise-reducing, which is characterized in that the high-speed rail sound barrier of the high-efficient noise-reducing includes slot
Type column, metal composite noise elimination plate and coupling plate；The metal composite noise elimination plate is inserted into the slot of the groove profile column
In；The top of the metal composite noise elimination plate is provided with covering plate, and the windward side of the metal composite noise elimination plate is provided with
The leeward of metal perforated plate, the metal composite noise elimination plate is provided with metal backing, the top covering plate, metal aperture
Plate, metal backing surround cavity jointly, and inorganic cotton sound absorber is installed in the cavity；There is spraying dioxy on the sound absorber surface
The aerosil powder of SiClx airsetting rubber powder, spraying forms aerosil layer on the sound absorber surface.
2. a kind of high-speed rail sound barrier structure of high-efficient noise-reducing according to claim 1, which is characterized in that the sound absorber
The spraying of the spraying of single side either multi-panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720954188.2U CN207619865U (en) | 2017-08-02 | 2017-08-02 | A kind of high-speed rail sound barrier of high-efficient noise-reducing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720954188.2U CN207619865U (en) | 2017-08-02 | 2017-08-02 | A kind of high-speed rail sound barrier of high-efficient noise-reducing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207619865U true CN207619865U (en) | 2018-07-17 |
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ID=62817777
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720954188.2U Expired - Fee Related CN207619865U (en) | 2017-08-02 | 2017-08-02 | A kind of high-speed rail sound barrier of high-efficient noise-reducing |
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| Country | Link |
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| CN (1) | CN207619865U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109288287A (en) * | 2018-09-30 | 2019-02-01 | 湖州欧贝得门业有限公司 | The Furniture panel of noise reduction |
| CN110230275A (en) * | 2019-06-28 | 2019-09-13 | 金华表征电子科技有限公司 | A kind of high-speed rail motor-car intelligence noise barrier |
| CN112659675A (en) * | 2020-12-24 | 2021-04-16 | 南京海通电子材料科技有限公司 | Method for manufacturing gradient material |
-
2017
- 2017-08-02 CN CN201720954188.2U patent/CN207619865U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109288287A (en) * | 2018-09-30 | 2019-02-01 | 湖州欧贝得门业有限公司 | The Furniture panel of noise reduction |
| CN110230275A (en) * | 2019-06-28 | 2019-09-13 | 金华表征电子科技有限公司 | A kind of high-speed rail motor-car intelligence noise barrier |
| CN112659675A (en) * | 2020-12-24 | 2021-04-16 | 南京海通电子材料科技有限公司 | Method for manufacturing gradient material |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180717 Termination date: 20210802 |
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| CF01 | Termination of patent right due to non-payment of annual fee |