CN1807761A - Microporous foam double-side absorbing sound type ultra-thin barrier - Google Patents
Microporous foam double-side absorbing sound type ultra-thin barrier Download PDFInfo
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- CN1807761A CN1807761A CN 200610023901 CN200610023901A CN1807761A CN 1807761 A CN1807761 A CN 1807761A CN 200610023901 CN200610023901 CN 200610023901 CN 200610023901 A CN200610023901 A CN 200610023901A CN 1807761 A CN1807761 A CN 1807761A
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Abstract
The invention relates to a porous foam dual-surface sound adsorption ultra-thin sound baffle, belonging to the noise control technique. It comprises: two layers of porous plates, two layers of chambers, two groups of non-fiber sound adsorption porous material, a trapezium chamber, a folded baffle plate, and the frame. Wherein, two layers of chambers are arranged between the two layers of porous plates and two groups of non-fiber sound adsorption porous material; the trapezium chamber is arranged between two groups of non-fiber sound adsorption porous material and the folded baffle plate; the frame can fix the porous plates and the folded baffle plate; two groups of non-fiber sound adsorption porous material are fixed on the folded baffle plate; each back of said groups of non-fiber sound adsorption porous plates has a group of trapezium chamber; and two groups of trapezium chambers are meshed and filled by non-fiber sound adsorption porous material. the invention can be mounted between the upper and lower rails of railway or city road or between the driveways to reduce the traffic noise.
Description
Technical field
What the present invention relates to is the sound barrier in a kind of noise control technique field, particularly a kind of microporous foam double-side absorbing sound type ultra-thin barrier.
Background technology
The Noise Control problem more and more is subject to people's attention, and ambient noise is directly connected to people's quality of life, even people's physiology and mental health is had material impact.Sound barrier is the critical facility of track traffic, elevated road and the control of speedway noise, and present sound barrier normally is installed in the one or both sides of road or track circuit, can be divided into absorbing sound type and sound insulation type two big classes.Wherein the absorbing sound type sound barrier has higher sound absorption coefficient in the face of a side of sound source, and normally do not absorb sound back to a side of sound source; The two sides of sound insulation type sound barrier does not absorb sound.In order further to reduce the noise of track traffic and road, sometimes need be between the track of (as above, between the downlink) or road between the railway circuit of (comprising urban track traffic) setting height(from bottom) sound barrier, because the both sides of barrier are the face of noise source all, therefore, the sound barrier that needs a kind of double-face sound-absorbing.And, because the restriction of installing space often has the qualification of comparison strictness to the width of double-side absorbing sound type sound barrier.Designing and producing also of sound barrier will be satisfied many-sided requirements such as effect, life-span and environmental protection.
Find through literature search prior art, the utility model name is called: micropunch gobo baffle, number of patent application: 03260902.7, publication number: 2627056, this patent readme is: " form by panel, backboard and skeleton; described panel and backboard are separately fixed on the described skeleton, it is characterized in that: described panel by thickness of slab and piercing aperture all below 1mm, perforated percentage is that 1～3% thin plate is made.”。This sound barrier has the advantages that not adopt natural or artificial cotton fiber, but because the sound absorption construction that this sound barrier has only used one deck microperforated panel to constitute, the width of sound sucting band is just smaller, is difficult to satisfy the frequency requirement of traffic noise control.This sound barrier has only one side sound absorption simultaneously, and being not suitable for using in both sides all is between the track and track of noise source, if two these type sound barriers are combined as the barrier of double-face sound-absorbing back-to-back, gross thickness will be the twice of single face sound barrier.
Retrieval is also found, the patent of invention name is called: double-face sound-absorbing contacting oral cavity sound shield without cotton, number of patent application CN200510023452.2, publication number: CN1644802, this patent readme is: ... comprise: two-layer aluminum fiber thin plate, two-layer cavity, two layers of porous plates, the flute profile cavity, folding dividing plate, framework all around, the sound absorption face of sound barrier both sides is the aluminum fiber thin plate, two-layer aluminum fiber thin plate, it between the two layers of porous plates two-layer cavity, microperforated panel, between the collapsible dividing plate flute profile cavity, frame fixation aluminum fiber thin plate all around, the position of microperforated panel and collapsible dividing plate." this sound barrier has all metal construction that only adopts sheet metal and aluminum fiberboard, do not adopt any porous absorption material, has the advantages that the life-span is long, sound absorption coefficient is big.But the thickness that adds the sound absorption construction that the engaging tooth shape cavity forms behind the employing microperforated panel is bigger, about 190mm, reduces the low frequency absorption performance that thickness will be sacrificed sound barrier usually.This thickness is difficult to be suitable for the less occasion of facilities clearance between the upper and lower line of some installing space exclusive occasion, especially railway sometimes.
Summary of the invention
The objective of the invention is at the deficiencies in the prior art and defective, a kind of microporous foam double-side absorbing sound type ultra-thin barrier is provided, make it can be installed between the railway circuit of (comprising urban track traffic) or between the track of road, satisfy the requirement of traffic noise control.
The present invention is achieved by the following technical solutions, the present invention includes: the non-fibers sound absorption of two layers of porous plates, two-layer intermeshing ladder cavity, two groups porous material, folding dividing plate, framework all around.Wherein, it is trapezoidal that two groups of non-fiber sound absorption porous materials are made in advance, inlays in the dovetail groove that is installed on the folding dividing plate.The sound absorption face of sound barrier both sides is microperforated panel, it is two-layer cavity that two layers of porous plates, two groups of non-fibers absorb sound between the porous material, it is to shave the shape cavity that two groups of non-fibers absorb sound between porous material, the collapsible dividing plate, the frame fixation microperforated panel all around and the position of collapsible dividing plate.
The sound absorption face of sound barrier both sides is two external surfaces of sound barrier, it all is microperforated panel, cavity between microperforated panel and the non-fiber sound absorption porous material constitutes first group of sound absorption construction, non-fiber sound absorption porous material and ladder cavity constitute second group of sound absorption construction, two groups of non-fiber sound absorption porous materials respectively have one group of ladder cavity behind, two groups of ladder cavities are meshing with each other, and are engagement type ladder cavity.
Adopt engagement type ladder cavity to reduce the thickness of sound barrier greatly, at the non-fiber sound absorption of engagement type ladder cavity filling part porous material, can further reduce the thickness of sound barrier, this is a technical essential of the present invention.Engagement type ladder cavity is made of steel plate or the good material sound barrier folding or combination of other sound insulation properties, and sound barrier prevents the effect of the noise transmitted sound barrier of sound barrier one side to opposite side in addition.Two groups of sound absorption constructions of every side are the different frequency of corresponding noise respectively.First group of sound absorption construction that cavity between microperforated panel and the non-fiber sound absorption porous material constitutes is at the high frequency composition of traffic noise, and second group of sound absorption construction that non-fiber sound absorption porous material and ladder cavity constitute is to the medium and low frequency composition of traffic noise.
Test shows, the present invention is 0.73 at the sound absorption mean coefficient of three octaves of the main frequency scope 250 ~ 2000Hz of traffic noise, and the thickness of sound barrier is less than 120mm.And " micropunch gobo baffle " in the background technology adopts the individual layer perforated microstructure, and the width of sound sucting band has only about two octaves usually; The thickness of " double-face sound-absorbing contacting oral cavity sound shield without cotton " in the background technology just has sound absorbing capabilities preferably when 190mm is above.Compare with correlation technique, the present invention has substantive distinguishing features and progress aspect structure, performance and the service condition.
Microperforated panel also can use aluminum fiber thin plate, iron nickel foam plate, foaming aluminium sheet and other metallic fiber classes or foaming metal class material to replace.Non-fiber sound absorption porous material can be sound absorption materials such as organic expanded material, foaming metal, foamed ceramic or foamed glass.As adopt fiber-like such as glass wool to replace non-fiber sound absorption porous material also can to make the present invention have sound absorbing capabilities preferably, but application life and environmental-protecting performance are relatively poor.
The present invention has substantive distinguishing features and marked improvement, does not adopt fibrous materials such as natural cotton, synthetic cotton, glass wool, sponge, rock wool and mineral wool at any position of sound barrier, so sound barrier of the present invention has the advantage of long, renewable, environmental protection of life-span.The cavity of sound barrier both sides adopts intermeshing trapezium structure, reduced the thickness of sound barrier greatly, at the non-fiber sound absorption of engagement type ladder cavity filling part porous material, further reduced the thickness of sound barrier, gross thickness is below 120mm, widened the sound sucting band of sound barrier, the average sound absorption coefficient of 250-2000Hz is 0.73.The present invention is installed between the uplink and downlink track of railway or city rail traffic route, perhaps between the track of multilane highway, can significantly reduces traffic noise.
Description of drawings
Fig. 1 is a cross section structure schematic diagram of the present invention.
Fig. 2 is a Facad structure schematic diagram of the present invention.
The specific embodiment
Shown in Fig. 1-2, the present invention includes: two layers of porous plates 1, two-layer cavity 2, two groups of non-fiber sound absorption porous materials 3, ladder cavity 4, folding dividing plate 5, framework all around 6.The sound absorption face of sound barrier both sides is two layers of porous plates 1, between two layers of porous plates 1, the two groups of non-fiber sound absorption porous materials 3 is two-layer cavity 2, between two groups of non-fibers sound absorption porous materials 3, the collapsible dividing plate 5 is ladder cavity 4, and framework 6 all around is the position of microperforated panel 1 and collapsible dividing plate 5 fixedly.Two groups of non-fiber sound absorption porous materials 3 are fixed on the collapsible dividing plate 5.
The sound absorption face of sound barrier both sides is two external surfaces of sound barrier, it all is microperforated panel 1, cavity 2 between microperforated panel 1 and the non-fiber sound absorption porous material 3 constitutes first group of sound absorption construction, non-fiber sound absorption porous material 3 and ladder cavity 5 constitute second group of sound absorption construction, two groups of non-fiber sound absorption porous materials 3 respectively have one group of ladder cavity behind, two groups of ladder cavities are meshing with each other, and are engagement type ladder cavity.
Each sound absorption face is made up of two groups of sound absorption constructions respectively, and sound sucting band reaches three more than the octave, and the sound absorption coefficient of two sound absorption faces is identical.
When design parameter of the present invention, the parameter of the cavity 2 between microperforated panel 1 and the non-fiber sound absorption porous material 3 is primarily aimed at the high frequency composition of traffic noise, make that the high frequency composition of the maximum sound absorption coefficient respective frequencies of first group of sound absorption construction that cavity 2 between microperforated panel 1 and the non-fiber sound absorption porous material 3 constitutes and traffic noise is consistent, make the present invention can farthest absorb the high frequency composition of traffic noise.The design parameters of two groups of non-fiber sound absorption porous materials 3 and ladder cavity 4 is primarily aimed at the high frequency composition of traffic noise, make that the maximum sound absorption coefficient respective frequencies of second group of sound absorption construction that two groups of non-fiber sound absorption porous materials 3 and ladder cavity 4 constitute is consistent with the medium and low frequency composition of traffic noise, make the present invention can farthest absorb the medium and low frequency composition of traffic noise.Because the present invention has the high frequency composition of difference absorption of noise and two groups of sound absorption constructions of medium and low frequency composition, makes sound sucting band of the present invention can reach three more than the octave.
Claims (3)
1, a kind of microporous foam double-side absorbing sound type ultra-thin barrier, comprise: two layers of porous plates (1), two-layer cavity (2), two groups of non-fiber sound absorption porous materials (3), ladder cavity (4), folding dividing plate (5), framework all around (6), it is characterized in that: the sound absorption face of sound barrier both sides is two layers of porous plates (1), two layers of porous plates (1), between two groups of non-fiber sound absorption porous materials (3) is two-layer cavity (2), two groups of non-fiber sound absorption porous materials (3), between the collapsible dividing plate (5) ladder cavity (4), framework all around (6) is the position of microperforated panel (1) and collapsible dividing plate (5) fixedly, and two groups of non-fiber sound absorption porous materials (3) are fixed on the collapsible dividing plate (5).
2, microporous foam double-side absorbing sound type ultra-thin barrier according to claim 1, it is characterized in that, cavity (2) between microperforated panel (1) and the non-fiber sound absorption porous material (3) constitutes first group of sound absorption construction, non-fiber sound absorption porous material (3) and ladder cavity (5) constitute second group of sound absorption construction, two groups of non-fiber sound absorption porous materials (3) respectively have one group of ladder cavity behind, two groups of ladder cavities are meshing with each other, and are engagement type ladder cavity.
According to claim 1 or 2 described microporous foam double-side absorbing sound type ultra-thin barriers, it is characterized in that 3, each sound absorption face is made up of two groups of sound absorption constructions respectively, sound sucting band reaches three more than the octave, and the sound absorption coefficient of two sound absorption faces is identical.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200610023901 CN1807761A (en) | 2006-02-16 | 2006-02-16 | Microporous foam double-side absorbing sound type ultra-thin barrier |
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| CN 200610023901 CN1807761A (en) | 2006-02-16 | 2006-02-16 | Microporous foam double-side absorbing sound type ultra-thin barrier |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102081924A (en) * | 2009-11-30 | 2011-06-01 | 株式会社神户制钢所 | Sound insulation material, sound insulation system and manufacturing method of sound insulation material |
| CN102628299A (en) * | 2012-05-07 | 2012-08-08 | 南京福臻再生资源科技股份有限公司 | Sound barrier |
| CN104201583A (en) * | 2014-08-06 | 2014-12-10 | 国家电网公司 | Air exhaust silencing device for telescopic power grid switching station |
| CN104210512A (en) * | 2014-09-17 | 2014-12-17 | 南京大学 | Method for monitoring loosening of H-steel clamping groove in high-speed railway sound barrier |
| CN104631353A (en) * | 2015-02-02 | 2015-05-20 | 江苏新光环保工程有限公司 | Full-screen sound absorption and noise reduction device |
| CN105027193A (en) * | 2013-02-27 | 2015-11-04 | 株式会社神户制钢所 | Sound insulating structure |
| CN105374349A (en) * | 2015-11-26 | 2016-03-02 | 武汉大学 | Power capacitor noise reduction device based on external composite sound absorption material |
| CN106284113A (en) * | 2015-06-29 | 2017-01-04 | 宜兴市昊诚环保科技有限公司 | A kind of two-sided acoustic screen |
| CN108049320A (en) * | 2017-12-22 | 2018-05-18 | 中国铁路设计集团有限公司 | Hollow board-like acoustic barrier unit board |
| CN108630188A (en) * | 2018-04-28 | 2018-10-09 | 中国铁道科学研究院铁道建筑研究所 | The processing technology of sound absorption structure, acoustic absorptive member, package system and sound absorption structure |
| CN110258372A (en) * | 2019-07-11 | 2019-09-20 | 山西尚风抑风墙科技有限公司 | A kind of double-faces acoustical board |
| CN113954890A (en) * | 2021-11-10 | 2022-01-21 | 株洲国创轨道科技有限公司 | Noise reduction floor for railway vehicle |
-
2006
- 2006-02-16 CN CN 200610023901 patent/CN1807761A/en active Pending
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102081924A (en) * | 2009-11-30 | 2011-06-01 | 株式会社神户制钢所 | Sound insulation material, sound insulation system and manufacturing method of sound insulation material |
| CN102081924B (en) * | 2009-11-30 | 2013-07-31 | 株式会社神户制钢所 | Sound insulation material, sound insulation system and manufacturing method of sound insulation material |
| CN102628299A (en) * | 2012-05-07 | 2012-08-08 | 南京福臻再生资源科技股份有限公司 | Sound barrier |
| CN105027193B (en) * | 2013-02-27 | 2018-12-21 | 株式会社神户制钢所 | Sound insulating construction |
| CN105027193A (en) * | 2013-02-27 | 2015-11-04 | 株式会社神户制钢所 | Sound insulating structure |
| CN104201583A (en) * | 2014-08-06 | 2014-12-10 | 国家电网公司 | Air exhaust silencing device for telescopic power grid switching station |
| CN104201583B (en) * | 2014-08-06 | 2017-04-12 | 国家电网公司 | Air exhaust silencing device for telescopic power grid switching station |
| CN104210512A (en) * | 2014-09-17 | 2014-12-17 | 南京大学 | Method for monitoring loosening of H-steel clamping groove in high-speed railway sound barrier |
| CN104631353B (en) * | 2015-02-02 | 2016-08-24 | 江苏新光环保工程有限公司 | A kind of full-frequency sound absorption denoising device |
| CN104631353A (en) * | 2015-02-02 | 2015-05-20 | 江苏新光环保工程有限公司 | Full-screen sound absorption and noise reduction device |
| CN106284113A (en) * | 2015-06-29 | 2017-01-04 | 宜兴市昊诚环保科技有限公司 | A kind of two-sided acoustic screen |
| CN105374349A (en) * | 2015-11-26 | 2016-03-02 | 武汉大学 | Power capacitor noise reduction device based on external composite sound absorption material |
| CN108049320A (en) * | 2017-12-22 | 2018-05-18 | 中国铁路设计集团有限公司 | Hollow board-like acoustic barrier unit board |
| CN108630188A (en) * | 2018-04-28 | 2018-10-09 | 中国铁道科学研究院铁道建筑研究所 | The processing technology of sound absorption structure, acoustic absorptive member, package system and sound absorption structure |
| CN110258372A (en) * | 2019-07-11 | 2019-09-20 | 山西尚风抑风墙科技有限公司 | A kind of double-faces acoustical board |
| CN113954890A (en) * | 2021-11-10 | 2022-01-21 | 株洲国创轨道科技有限公司 | Noise reduction floor for railway vehicle |
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