CN201221057Y - Noise absorption apparatus on top of acoustical barrier - Google Patents
Noise absorption apparatus on top of acoustical barrier Download PDFInfo
- Publication number
- CN201221057Y CN201221057Y CNU2008201086387U CN200820108638U CN201221057Y CN 201221057 Y CN201221057 Y CN 201221057Y CN U2008201086387 U CNU2008201086387 U CN U2008201086387U CN 200820108638 U CN200820108638 U CN 200820108638U CN 201221057 Y CN201221057 Y CN 201221057Y
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- Prior art keywords
- sound
- barrier
- cover plate
- sound barrier
- frame
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Abstract
The utility model discloses an additional device on the top of a noise barrier. The additional device has a variable-section cavity structure consisting of a frame and a cover plate arranged on the top, wherein the frame consists of a bottom plate and a plurality of vertical baffles for supporting the top cover plates; two high baffles are arranged at the middle part of the frame, and two low baffles are arranged on two sides; frames are arranged on the upper edge of the baffles; and the top cover plate is fixed on the frames in riveting manner. The additional device can be suitable for the top of the noise barrier to reduce the height of the noise barrier or can be attached to the top of the former vertical noise barrier for reconstruction of the noise barrier to improve the noise reduction effect of the former noise barrier.
Description
Technical field
The utility model relate to a kind of be attached to the road noise barrier top prevent the noise device, be specifically related to a kind of top sound absorption reduction device.
Background technology
Along with the urban traffic development, the fast development of viaduct and speedway, vehicular traffic is on the rise along with the increase of city vehicle to the noise of resident's generation of road both sides, and along with the raising of people's living standard, people are also more and more higher to the requirement of noise.Usually adopt the mode that noise barrier is set in the road both sides for this reason.At present, normally used noise barrier mostly adopts upright form, the sound insulation and noise reducing poor effect.Influencing bigger is top diffraction sound, also is a more unmanageable part simultaneously, increases and highly can improve top diffraction sonic propagation, because the influence of cost and civic landscape etc., the height of noise barrier is restricted.
Summary of the invention
The purpose of this utility model is to provide and can effectively absorbs top diffraction sound, makes diffraction acoustic energy obtain diffusion and decay, significantly improves a kind of sound barrier top sound absorber of the noise reduction of noise barrier.
For reaching above-mentioned purpose, the concrete content of the utility model is:
A kind of sound barrier top sound absorber be the variable cross-section closed cavity structure of being made up of the different cavity in a plurality of cross sections, and this cavity structure upper surface is that sound absorption material is made.
Described cavity structure is made up of framework and the cover plate that is installed in the top, and framework is made up of the vertical baffle plate that a base plate and polylith are used for the support top end cover plate, and frame mid portion is established two high baffle plates, and both sides are two low baffle plates.
Described baffle plate upper limb is provided with frame, and the top cover plate is fixed on this frame with riveted way.
Described top cover plate adopts microperforated panel or foamed aluminium acoustical board.
Described top cover plate adopts microperforated panel, and the diameter of micropunch is 0.8mm, and perforated percentage is 1-2%.
Described top cover plate adopts perforated plate, is filled with the sound absorption mineral wool in the perforation.
Described chassis base is provided with connecting portion and is connected with existing absorbent lined barrier H type column upper end.
The sound barrier top structure of the utility model design, owing to consider the most important and the most unmanageable diffraction sound that solves in the noise transmission, the cavity structure form that has adopted sound absorption material to form, therefore can farthest intercept and absorb noise by top diffraction, and owing to adopt variable cross-section cavity structure form, sound sucting band, thus the noise reduction of sound barrier improved greatly.Owing to the employing of top sound absorber, can reduce the height of sound barrier greatly, saved construction cost, improved noise reduction.In addition because sound absorption materials such as employing foamed aluminium have better weather.This noise barrier top arrangement is simple and light, and is easy for installation, long service life.Can be applied in new sound barrier top, improve the compound noise reduction of noise barrier, reduce the height of sound barrier, reach landscape effect preferably; Be applicable to the other or speedway of the intensive elevated road of townsfolk.Also can be applied to old erect type sound barrier top transformation, improve the noise reduction of original noise barrier.
Description of drawings
Fig. 1: be cross sectional view of the present utility model.
The specific embodiment
Below the effect forming and can produce with regard to the structure of a kind of sound barrier of the utility model top sound absorber, conjunction with figs. is described in detail as follows with preferred embodiment:
As shown in Figure 1, a kind of sound barrier of the utility model top sound absorber is a variable cross-section cavity structure form, it includes framework 2 and top cover plate 4, framework 2 is made up of the vertical baffle plate 22 that a base plate 21 and polylith are used for support top end cover plate 4, framework 2 middle parts be two high baffle plates, both sides then be two low baffle plates.
On baffle plate 22, be provided with frame, baffle plate 22 by frame with the fixing top cover plate 4 of riveted way, make top cover plate 4 be located at the top of framework 2, form three cavity C 1, C2 and C3 jointly by chassis base 21, baffle plate 22 and cover plate 4 like this, because the middle part baffle plate is different with the height of side baffle plate, so the cavity C 2 in the middle of being positioned at is different with the C3 cross sectional shape with the cavity C 1 that is positioned at both sides, makes whole cross section present the variable cross-section state, cavity C 1, C2 and C3 inside are air layer.Described framework can adopt steel sheet to make.
Described top cover plate 4 can adopt perforated plate, microperforated panel or foamed aluminium acoustical board, and the diameter of micropunch is 0.8mm, and perforated percentage is 1-2%.When described top cover plate adopted perforated plate, filling sucting sound material was wanted in perforated plate inside, as materials such as sound absorption rock wools.
Form the utility model sound barrier top sound absorber by above design.This sound barrier top sound absorber can be affixed with existing sound barrier by the base plate 21 of its framework 2, sound barrier top sound absorber symmetry is fixedly arranged on the upper end of the H type column 10 of existing sound barrier as using bolt 11.
In concrete enforcement, framework adopts steel sheet to make, frame size can for: two high heights of baffle plate are 150mm, and two low heights of baffle plate are 78mm, and the framework overall width is 700mm; Baffle edge partly is provided with the frame of 30mm, is used to install and fix cover plate foamed aluminium acoustical board, can connect with the riveted joint mode.Each sound barrier top sound absorber length direction can be 2m, and is consistent at interval with existing sound barrier column.In the sound absorber two bottom sides position corresponding with column, be provided with the M12 bolt hole, sound absorber links to each other with H type column top shown in inciting somebody to action with bolt.In the installation process, place, between baffle plate and the cover plate and the slit between sound absorber and the sound barrier needs sealing, can adopt fluid sealant or rubber seal.
After tested, after existing sound barrier adds the utility model sound absorber, can reduce by 13 to 15 decibels of noises, and the existing sound barrier that does not install sound absorber additional can only reduce by 10 decibels of noises, illustrates to the utlity model has tangible sound absorption reduction effect.
Though the utility model is described by previous embodiment, but still can change its form and details, make not breaking away under the spirit of the present utility model.Aforementioned is the most rational using method of the utility model, one of the mode that can specifically implement for the utility model only, but not as limit.
Claims (7)
1, a kind of sound barrier top sound absorber is characterized in that, be the variable cross-section closed cavity structure of being made up of the different cavity in a plurality of cross sections, and this cavity structure upper surface is that sound absorption material is made.
2, a kind of sound barrier as claimed in claim 1 top sound absorber, it is characterized in that, described cavity structure is made up of framework and the cover plate that is installed in the top, framework is made up of the vertical baffle plate that a base plate and polylith are used for the support top end cover plate, frame mid portion is established two high baffle plates, and both sides are two low baffle plates.
3, a kind of sound barrier as claimed in claim 2 top sound absorber is characterized in that described baffle plate upper limb is provided with frame, and the top cover plate is fixed on this frame with riveted way.
As claim 2 or 3 described a kind of sound barrier top sound absorbers, it is characterized in that 4, described top cover plate adopts microperforated panel or foamed aluminium acoustical board.
5, a kind of sound barrier as claimed in claim 4 top sound absorber is characterized in that, described top cover plate adopts microperforated panel, and the diameter of micropunch is 0.8mm, and perforated percentage is 1-2%.
As claim 2 or 3 described a kind of sound barrier top sound absorbers, it is characterized in that 6, described top cover plate adopts perforated plate, is filled with the sound absorption mineral wool in the perforation.
7, a kind of sound barrier as claimed in claim 1 top sound absorber is characterized in that, described chassis base is provided with connecting portion and is connected with existing absorbent lined barrier H type column upper end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201086387U CN201221057Y (en) | 2008-06-04 | 2008-06-04 | Noise absorption apparatus on top of acoustical barrier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201086387U CN201221057Y (en) | 2008-06-04 | 2008-06-04 | Noise absorption apparatus on top of acoustical barrier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201221057Y true CN201221057Y (en) | 2009-04-15 |
Family
ID=40574568
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201086387U Expired - Lifetime CN201221057Y (en) | 2008-06-04 | 2008-06-04 | Noise absorption apparatus on top of acoustical barrier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201221057Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102418321A (en) * | 2010-09-25 | 2012-04-18 | 朴太善 | Noise reduction device at top end of sound barrier |
| CN103119220A (en) * | 2010-07-26 | 2013-05-22 | 亚尔莫·艾拉克西宁 | Wall structure working as a noise barrier for railways and use of the wall structure as a noise or passage barrier |
| CN110485322A (en) * | 2019-09-19 | 2019-11-22 | 盈普声学（惠州）有限公司 | A kind of transparent sound absorption cap at the top of acoustic barrier |
| CN110565551A (en) * | 2019-08-19 | 2019-12-13 | 河北德胜金属网业有限公司 | Production method of urban landscape sound barrier and combined transparent plate thereof |
-
2008
- 2008-06-04 CN CNU2008201086387U patent/CN201221057Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103119220A (en) * | 2010-07-26 | 2013-05-22 | 亚尔莫·艾拉克西宁 | Wall structure working as a noise barrier for railways and use of the wall structure as a noise or passage barrier |
| CN103119220B (en) * | 2010-07-26 | 2016-08-31 | 桑蒂姆有限公司 | Wall construction and this wall construction as railway noise barrier are as noise or the application of passage barriers |
| CN102418321A (en) * | 2010-09-25 | 2012-04-18 | 朴太善 | Noise reduction device at top end of sound barrier |
| CN110565551A (en) * | 2019-08-19 | 2019-12-13 | 河北德胜金属网业有限公司 | Production method of urban landscape sound barrier and combined transparent plate thereof |
| CN110485322A (en) * | 2019-09-19 | 2019-11-22 | 盈普声学（惠州）有限公司 | A kind of transparent sound absorption cap at the top of acoustic barrier |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090415 |