CN2285318Y - Pore sound-absorbing screen - Google Patents
Pore sound-absorbing screen Download PDFInfo
- Publication number
- CN2285318Y CN2285318Y CN 96229246 CN96229246U CN2285318Y CN 2285318 Y CN2285318 Y CN 2285318Y CN 96229246 CN96229246 CN 96229246 CN 96229246 U CN96229246 U CN 96229246U CN 2285318 Y CN2285318 Y CN 2285318Y
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- CN
- China
- Prior art keywords
- micropunch
- sound
- panel
- gobo
- resonant cavity
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- Building Environments (AREA)
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
Abstract
The utility model discloses a micropunch sound-absorbing screen. The utility model is characterized in that a resonant cavity is composed of a micropunch panel and a rear closing plate; the punching rate of the panel is 1% to 30%; the resonant cavity is communicated with atmospheric air through a micropore; at least two micropunch panels are fixed on the sound-absorbing screen. The utility model has the advantages that the structure is simple; the surface can be made from colorful or transparent micropunch panels; appearance and molding are beautiful; due to the adoption of the combination of different hole diameters, different punching rate and different cavity thickness, sound-absorbing frequency band is wider; according to actual measurement, noise reduction and sound reduction index are more than 20dB (A); the utility model has better sound-absorbing effects especially for low frequency and medium frequency.
Description
The utility model relates to the technical field of acoustic connection, specifically a kind of absorbent lined barrier that is used to control road traffic noise and factory, building roof noise of equipment.
In recent years, ground one overhead composite road has been built up or has built in many cities, vehicle flowrate is big, noise pollution to the road both sides is very serious, survey factually, the traffic noise equivalent sound level in some highway section, medium can be up to 80dB, esidential building outside window equivalent sound level also more than 76dB, existing to factory, the employing that equipment noise sound absorber has adds porous absorption material in addition except that resonant cavity, what have is provided with two resonant cavities, integral body is is convenient to bending, the strip of braiding, these structures not only acoustically effective are undesirable, and are not suitable for absorbing the gobo of the traffic noise on the road.
The purpose of this utility model is: a kind of micropunch gobo is provided, and it can reach noise reduction preferably.
Technical solutions of the utility model are, it mainly comprises resonant cavity and the column that is connected with framework by frame fixation, it is characterized in that: form resonant cavity by micropunch panel and back shrouding, the perforated percentage of panel is 1%-30%, resonant cavity communicates with atmosphere by micropore, and whole gobo is fixed with two micropunch panels at least.
Aperture on the micropunch panel is 0.5-3.0mm, in the middle of panel and the back shrouding several dividing plates can be set, and the thickness of resonant cavity is 5-30cm; Gobo can adopt different apertures, and perforated percentage and chamber are thick makes up; The micropunch panel also can adopt tilting to be installed on the framework, or class also can add at least one sound absorber with the thick gradual change type structure in chamber in the upper end of gobo.
The utility model is simple in structure, and the surface can be selected colored or transparent micropunch panel for use, and is handsome in appearance.Consider the aural signature of people's ear, be general requirements in the frequency range of 250Hz-2KHz its sound absorption coefficient greater than 0.6-0.7, this gobo is owing to adopt different apertures, perforated percentage and the chamber is thick makes up, the sound sucting band broad, especially low, intermediate frequency are had acoustically effective preferably, after road two sides were provided with this gobo, the noise reduction sound insulation factor was greater than 20dB, survey factually after the upper end of gobo adds several sound absorbers, noise reduction can improve 5-8dB.
Fig. 1 is a structural representation of the present utility model
Fig. 2 is the A-A generalized section among Fig. 1
Fig. 3 is micropunch 1 enlarged diagram of Fig. 1
Fig. 4 is an example structure schematic diagram of the present utility model
Fig. 5 is the sound absorber B-B generalized section among Fig. 4
Fig. 6 is the thick gradual change type structure of a Fig. 4 lumen A-A schematic diagram
Fig. 7 is the thick gradual change type structural representation in the resonant cavity chamber of another embodiment
The utility model will be further described below in conjunction with drawings and Examples.
Technical conceive of the present utility model is based on microperforated panel just is enough to characteristic impedance coupling with ambient air because of itself acoustic resistance, just can not form good broadband resonance sound-absorbing original paper and do not need to add in addition porous absorption material, be particularly useful in the outdoor particular surroundings control low, mid-frequency noise.The utility model is formed resonant cavity by micropunch panel 1 and back shrouding 2, and the perforated percentage of panel 1 is 1%-30%, and resonant cavity communicates with atmosphere by micropore, by the fixing resonant cavity of framework 3, is connected with basic fixed with framework 3 respectively by column 4 again; Micropunch panel 1 can be selected for use color steel sheet or other metal sheet also can adopt glass, mould plate or the good non-metal board of other acoustically effective, aperture on the micropunch panel 1 is generally 0.5-3.0mm, in the middle of panel 1 and the back shrouding 2 several dividing plates 12 can be set, the thickness of resonant cavity generally is selected in 5-30cm; Gobo is fixed with two micropunch panels 1 at least, and the present embodiment gobo is provided with six microperforated panels, is divided into two layers, and the upper strata is color steel microperforated panel, and lower floor is transparent nonmetal micropunch panel.Can adopt different apertures and different perforated percentages on the panel 1; Resonant cavity can adopt different chambeies thick, whole gobo is made up by different apertures, perforated percentage and chamber are thick, also can consider to adopt tilting to be installed on the framework or the thick gradual change type structure in similar chamber the micropunch panel, best chamber is thick to be 50-200mm, make the sound sucting band broad, especially low, intermediate frequency are had good acoustically effective.
In addition according to sound barrier top diffraction theory, think that the sound barrier top is the position that acoustic energy is concentrated, except that direct sound, diffraction sound is transmitted to the opposite side of sound barrier thus, can think that the top is an imaginary sound source, if the top is installed a kind of strong sound absorber and is beneficial to the structure of sound diffusion, then can weaken diffraction acoustic energy, reduce the noise of the sound shadow region of sound barrier, also can add at least one sound absorber 5 in the upper end of gobo for this reason, the sound absorber 5 that adds can be fan-shaped, cylindrical or surperficial other shape that is smooth circular arc, present embodiment adds two fan-shaped sound absorbers, be followed successively by perforated plate 6 outside to inside from sound absorber, film 7, sound absorption material 8, liner perforated plate 9, cavity 10 and dividing plate 12, perforated plate 6 also can adopt color steel sheet; Film 7 adopts plastic foil; Sound absorption material 8 can adopt glass wool, polyvinyl chloride, PVC plastics etc., and interior lining panel 9 is preferably selected galvanized sheet for use, then sound absorber is separately fixed on the framework by location-plate 11.
Claims (3)
1. micropunch gobo, it mainly comprises resonant cavity and the column that is connected with framework by frame fixation, it is characterized in that: form resonant cavity by micropunch panel and back shrouding, the perforated percentage of panel is 1%-30%, resonant cavity communicates with atmosphere by micropore, and gobo is provided with two micropunch panels at least.
2. by the described micropunch gobo of claim 1, it is characterized in that: the aperture on the micropunch panel is 0.5-3.0mm; In the middle of panel and the back shrouding several dividing plates can be set; The thickness of resonant cavity is 5-30cm; Gobo can adopt that different apertures, perforated percentage and chamber are thick makes up; The micropunch panel can adopt the thick gradual change type structure of tilting or similar chamber; Upper end at gobo also can add at least one sound absorber.
3. by claim 1 or 2 described micropunch gobos, it is characterized in that: the sound absorber that adds can be fan-shaped, cylindrical or surperficial other shape that is smooth circular arc; Sound absorber is followed successively by perforated plate, film, sound absorption material, liner perforated plate, cavity and dividing plate from outside to inside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96229246 CN2285318Y (en) | 1996-02-07 | 1996-02-07 | Pore sound-absorbing screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96229246 CN2285318Y (en) | 1996-02-07 | 1996-02-07 | Pore sound-absorbing screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2285318Y true CN2285318Y (en) | 1998-07-01 |
Family
ID=33906942
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96229246 Expired - Fee Related CN2285318Y (en) | 1996-02-07 | 1996-02-07 | Pore sound-absorbing screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2285318Y (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101851899A (en) * | 2010-05-18 | 2010-10-06 | 中铁电气化局集团有限公司 | H-type prestressed concrete column and production method thereof |
| CN101349040B (en) * | 2007-07-21 | 2013-01-02 | Ed.旭普林股份公司 | Noise barrier especially for a high-speed railway line |
| CN103526700A (en) * | 2013-10-28 | 2014-01-22 | 陈松 | Acoustic barrier |
| CN104169500A (en) * | 2011-11-22 | 2014-11-26 | Art阿萨玛橡胶技术有限公司 | Noise reduction device |
| CN104246077A (en) * | 2011-11-22 | 2014-12-24 | Art阿萨玛橡胶技术有限公司 | Noise reduction device |
| CN105442716A (en) * | 2014-09-29 | 2016-03-30 | 宜兴市昊诚环保科技有限公司 | Novel outdoor low frequency sound insulation screen |
| CN105863684A (en) * | 2016-05-29 | 2016-08-17 | 中海环境科技(上海）股份有限公司 | Tunnel side wall sound absorption structure |
| CN108824244A (en) * | 2018-06-29 | 2018-11-16 | 武汉源海博创科技有限公司 | A kind of high-efficiency photovoltaic sound barrier |
| CN108841009A (en) * | 2018-07-07 | 2018-11-20 | 盐城师范学院 | A kind of preparation method of different hole covalent organic frame material |
| CN109018193A (en) * | 2018-07-16 | 2018-12-18 | 江苏科技大学 | One kind being used for ship's space noise-and-vibration-reduction composite structural member |
| CN110984011A (en) * | 2019-12-28 | 2020-04-10 | 湖南城市学院 | Sound-insulation noise-reduction wall structure |
-
1996
- 1996-02-07 CN CN 96229246 patent/CN2285318Y/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101349040B (en) * | 2007-07-21 | 2013-01-02 | Ed.旭普林股份公司 | Noise barrier especially for a high-speed railway line |
| CN101851899A (en) * | 2010-05-18 | 2010-10-06 | 中铁电气化局集团有限公司 | H-type prestressed concrete column and production method thereof |
| CN104169500A (en) * | 2011-11-22 | 2014-11-26 | Art阿萨玛橡胶技术有限公司 | Noise reduction device |
| CN104246077A (en) * | 2011-11-22 | 2014-12-24 | Art阿萨玛橡胶技术有限公司 | Noise reduction device |
| CN103526700A (en) * | 2013-10-28 | 2014-01-22 | 陈松 | Acoustic barrier |
| CN103526700B (en) * | 2013-10-28 | 2015-11-18 | 中国铁路总公司 | A kind of sound barrier |
| CN105442716A (en) * | 2014-09-29 | 2016-03-30 | 宜兴市昊诚环保科技有限公司 | Novel outdoor low frequency sound insulation screen |
| CN105863684A (en) * | 2016-05-29 | 2016-08-17 | 中海环境科技(上海）股份有限公司 | Tunnel side wall sound absorption structure |
| CN108824244A (en) * | 2018-06-29 | 2018-11-16 | 武汉源海博创科技有限公司 | A kind of high-efficiency photovoltaic sound barrier |
| CN108841009A (en) * | 2018-07-07 | 2018-11-20 | 盐城师范学院 | A kind of preparation method of different hole covalent organic frame material |
| CN108841009B (en) * | 2018-07-07 | 2021-09-14 | 盐城师范学院 | Preparation method of hetero-pore covalent organic framework material |
| CN109018193A (en) * | 2018-07-16 | 2018-12-18 | 江苏科技大学 | One kind being used for ship's space noise-and-vibration-reduction composite structural member |
| CN110984011A (en) * | 2019-12-28 | 2020-04-10 | 湖南城市学院 | Sound-insulation noise-reduction wall structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |