CN205636537U - Double -deck porous sound absorption type sound barrier - Google Patents
Double -deck porous sound absorption type sound barrier Download PDFInfo
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- CN205636537U CN205636537U CN201620402636.3U CN201620402636U CN205636537U CN 205636537 U CN205636537 U CN 205636537U CN 201620402636 U CN201620402636 U CN 201620402636U CN 205636537 U CN205636537 U CN 205636537U
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Abstract
The utility model belongs to the technical field of noise eliminator and specifically relates to a double -deck porous sound absorption type sound barrier, its characterized in that: the sound barrier includes perforation panel, middle perforated plate and backplate at least, wherein the perforation panel peripheral with the periphery of backplate forms integratively through outer frame welded fastening, the perforation panel with leave the space between the backplate, be provided with bilayer structure's internal frame in the outer frame, the internal frame is located the perforation panel with in the space of backplate and its upper and lower both ends respectively with outer frame attach is fixed, middle perforation plate holder dress is at bilayer structure between the internal frame. The utility model has the advantages that: can all adopt sheet metal conduct processing raw and other materials, the material that does not use glass cotton or rock wool etc. To have secondary pollution is avoided polluting, sheet metal can cannot not adopt on firely the material, and it needs to satisfy the fire prevention, has created the environment for it gets into indoor use, the sound construction degree is strong, and it is effectual to absorb sound.
Description
Technical field
This utility model relates to silencing apparatus field, a kind of double-layer porous sound-absorbed barrier.
Background technology
Sound barrier, as the term suggests isolating the barrier of sound exactly, it is to build the wall-body building near sensitive point for noise.Cardinal principle is to use sound absorption or sound insulating material to be built into effective sound absorption or sound insulation band, to isolate traffic noise or other building noises, reduces the noise impact on neighbouring resident.
Present stage, domestic sound barrier is mainly used in arterial traffic both sides, near have the place in residential area.Typically arranging 200 meters to 500 meters continuously, concrete length is depending on the range size in residential area.And the most effectively utilize this limited number of hundred meters of spaces, do more effective sound barrier and just become a current difficult problem to be captured.
The structural shape of sound barrier the most only three kinds in the market, it is respectively line style, type semienclosed, Totally-enclosed-type, and the internal structure of the main sound-absorbing material that sound barrier uses and sound absorbing-insulating body is multifarious, these sound absorption and insulation materials have a preferable effect to the noise of medium-high frequency, the assimilation effect of the resonance low frequency noise that low-frequency noise, bridge floor or ground produce the bad but low-frequency noise produced for automobile tire scrape along the ground, electromotor thunder.
Summary of the invention
The purpose of this utility model is according to above-mentioned the deficiencies in the prior art, it is provided that double-layer porous sound-absorbed barrier, forms two but also sound absorption spaces of UNICOM the most independent by arranging double-decker, the sound wave passed through realizes four interference, thus improves acoustically effective.
This utility model purpose realizes being completed by techniques below scheme:
A kind of double-layer porous sound-absorbed barrier, it is characterized in that: described sound barrier at least includes perforated panel, intermediate perforated plate and backboard, the periphery of the peripheral and described backboard of wherein said perforated panel is welded and fixed formation one by outside framework, space is left between described perforated panel and described backboard, double-deck inner frame it is provided with in described outside framework, described inner frame be positioned at the space of described perforated panel and described backboard and its on, lower two ends are connected fixing respectively with described outside framework, described intermediate perforated plate is installed between double-deck described inner frame.
Being respectively arranged with internal layer sound absorption keel frame between described perforated panel and described intermediate perforated plate and between described intermediate perforated plate and described backboard, described internal layer sound absorption keel frame is welded and fixed with described inter and outer gimbal.
Described internal layer sound absorption keel frame assumes diamond in shape layout.
The utility model has the advantages that: can all use sheet metal as processing raw material, not use glass cotton or rock wool etc. to have the material of secondary pollution, it is to avoid to pollute；Sheet metal can use material the most on fire, meets fire prevention needs, enters indoor use for it and creates environment；Sound construction degree is strong, and acoustically effective is good.
Accompanying drawing explanation
Fig. 1 is front view of the present utility model；
Fig. 2 is side view of the present utility model；
Fig. 3 is perspective view of the present utility model.
Detailed description of the invention
This utility model feature and other correlated characteristic are described in further detail by embodiment below in conjunction with accompanying drawing, in order to the understanding of technical staff of the same trade:
As Figure 1-3, in figure, labelling 1-7 is expressed as: outside framework 1, internal layer sound absorption keel frame 2, intermediate perforated plate 3, inner frame 4, perforated panel 5, backboard 6, pad 7.
Embodiment: as depicted in figs. 1 and 2, the double-layer porous sound-absorbed barrier in the present embodiment includes intermediate perforated plate 3, perforated panel 5 and backboard 6, and wherein intermediate perforated plate 3 is arranged between perforated panel 5 and backboard 6, and perforated panel 5 is towards noise source.
As depicted in figs. 1 and 2, the periphery of perforated panel 5 and backboard 6 is welded and fixed by the outside framework 1 of rectangular closed and is integrally formed, and leaves space between perforated panel 5 and backboard 6.Double-deck inner frame 4 it is provided with, within the most double-deck inner frame 4 is positioned at the space between perforated panel 5 and backboard 6 between the upper and lower both sides of the outside framework 1 of rectangular closed.Intermediate perforated plate 3 is installed between double-deck inner frame 4, and so, perforated panel 5 and intermediate perforated plate 3 and intermediate perforated plate 3 and backboard 6 form a sound absorption space respectively, and device entirety is the formation of the sound absorption space of two both independent UNICOMs.In use, sound wave for the first time spreads interference carrying out after perforated panel 5, second time interference superposition after intermediate perforated plate 3 afterwards, third time interference superposition after backboard 6 reflects, the 4th superposition is carried out by after intermediate perforated plate 3 after reflection, sound wave produces four interference, and acoustically effective is the best.
In order to increase acoustically effective further, being respectively arranged with internal layer sound absorption keel frame 2 between perforated panel 5 and intermediate perforated plate 3 and between intermediate perforated plate 3 and backboard 6, the tip of internal layer sound absorption keel frame 2 is connected fixing respectively with outside framework 1 and inner frame 4.According to the principle of reflection of sound wave, internal layer sound absorption keel frame 2 is arranged to rhombus, more preferable compared to the acoustically effective of square space.
The present embodiment is in the specific implementation: perforated panel 5 uses the perforation aluminium alloy panel that 1mm-1.5mm is thick, and punching rate is more than 25%, and aperture is 4mm.Backboard 6 uses aluminum alloy back plate, thickness 1.5-2.0mm.Outside framework 1 processes for 1.5mm aluminium alloy plate flanging.Inner frame 4 forms for 1.0-1.2mm perforated aluminum alloy panel flanging, and punching rate is more than 25%, aperture 4mm.The punching rate of intermediate perforated plate 3 is more than 25%, aperture 3mm.Now, sound barrier all uses aluminium alloy plate as processing raw material, does not use glass cotton or rock wool etc. to have the material of secondary pollution；Aluminum alloy materials is metal material the most on fire, and the design of all aluminium alloy material not only meets fire protection requirement, more the type gobo body and breaks through the constraint of sound barrier outdoor application, and for its entrance, in indoor, use creates immensity.
Through test, the noise reduction coefficient NRC of the sound barrier in the present embodiment is 1.3, improves 0.4-0.7 than the acoustic absorptivity of conventional acoustic barrier, and the acoustic absorptivity in the Middle and low frequency noise region of 0-1000HZ is more up to more than 1.4, has exceeded one times than conventional acoustic barrier and has had a surplus.
Although design and the embodiment of this utility model purpose is elaborated by above example referring to the drawings, but those of ordinary skill in the art will be consequently realised that, under the precondition limiting scope without departing from claim, still this utility model can be made various modifications and variations, such as: the size of each sheet material, shape, processing technology；The size etc. of relative distance between perforated panel 5, intermediate perforated plate 3 and backboard 6；Therefore repeat the most one by one at this.
Claims (3)
1. a double-layer porous sound-absorbed barrier, it is characterized in that: described sound barrier at least includes perforated panel, intermediate perforated plate and backboard, the periphery of the peripheral and described backboard of wherein said perforated panel is welded and fixed formation one by outside framework, space is left between described perforated panel and described backboard, double-deck inner frame it is provided with in described outside framework, described inner frame be positioned at the space of described perforated panel and described backboard and its on, lower two ends are connected fixing respectively with described outside framework, described intermediate perforated plate is installed between double-deck described inner frame.
The double-layer porous sound-absorbed barrier of one the most according to claim 1, it is characterized in that: be respectively arranged with internal layer sound absorption keel frame between described perforated panel and described intermediate perforated plate and between described intermediate perforated plate and described backboard, described internal layer sound absorption keel frame is welded and fixed with described inter and outer gimbal.
The double-layer porous sound-absorbed barrier of one the most according to claim 2, it is characterised in that: described internal layer sound absorption keel frame assumes diamond in shape layout.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620402636.3U CN205636537U (en) | 2016-05-06 | 2016-05-06 | Double -deck porous sound absorption type sound barrier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620402636.3U CN205636537U (en) | 2016-05-06 | 2016-05-06 | Double -deck porous sound absorption type sound barrier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205636537U true CN205636537U (en) | 2016-10-12 |
Family
ID=57049184
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620402636.3U Expired - Fee Related CN205636537U (en) | 2016-05-06 | 2016-05-06 | Double -deck porous sound absorption type sound barrier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205636537U (en) |
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2016
- 2016-05-06 CN CN201620402636.3U patent/CN205636537U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161012 Termination date: 20180506 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |