CN215405677U - Metal ceramsite composite sound absorption screen board for sound barrier - Google Patents
Metal ceramsite composite sound absorption screen board for sound barrier Download PDFInfo
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- CN215405677U CN215405677U CN202120988588.1U CN202120988588U CN215405677U CN 215405677 U CN215405677 U CN 215405677U CN 202120988588 U CN202120988588 U CN 202120988588U CN 215405677 U CN215405677 U CN 215405677U
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Abstract
The utility model discloses a metal ceramsite composite sound absorption screen plate for a sound barrier of an expressway. The panel is of a sheet-shaped cubic box structure, a microporous ceramsite sound absorption plate with the thickness being one tenth to one half of the total thickness of the cross section of the box is fixedly bonded in the sheet-shaped cubic box and on the rear side of the panel, a sound absorption resonance cavity is formed between the rear side of the microporous ceramsite sound absorption plate and the back plate, panel through holes are uniformly formed in the surface of the panel, and the total area of the panel through holes is more than thirty percent of the total area of the panel. The sound absorption screen plate adopts the louver perforated plate as the panel, the micropore ceramsite material with the three-dimensional reticular pore structure which is in disordered communication is pasted as the sound absorption material, the sound absorption screen plate material contains a large number of micropores which are widely distributed, the micropores are mutually connected to attenuate sound waves before the sound waves enter the cavity, the sound absorption effect is excellent, the sound waves pass through the surface layer and then are mutually interfered and reflected in the cavity to be further attenuated, and the sound absorption screen plate has better attenuation effect on medium and low frequency noise.
Description
Technical Field
The utility model belongs to the technical field of highway noise treatment, particularly belongs to a highway noise treatment technology, and particularly relates to a ceramsite sound absorption screen plate for a highway sound barrier.
Background
A sound barrier is a facility interposed between the source and the receiver that provides a significant additional attenuation of the sound wave propagation to attenuate the effects of noise in the area of the receiver. The sound absorption screen plate is a main sound absorption and noise reduction functional structural part of the sound barrier, and the absorption and attenuation capacity of the sound absorption screen plate on sound wave energy is an important evaluation index of the noise reduction performance of the sound barrier.
With the continuous improvement of the scientific and technical level of China, the technical improvement of the construction of highway engineering projects in the process of developing economy in various regions is more and more emphasized, and a large amount of funds are invested to improve the improvement of the highway and the construction technology thereof. In the running and using process of the road network after completion, the environment around the road network is seriously polluted due to the influence of vehicle running and other factors. The pollution includes environmental pollution and noise environmental pollution, and the pollution causes serious obstruction to the continuous development of road construction work.
At present, environmental improvement and sound barrier construction are carried out on the periphery of a road to reduce the influence of noise generated by a road network in operation on the peripheral environment and normal production and life of people. The sound barrier generally comprises a support member such as a steel upright post and a sound-absorbing screen body, and the main structure for absorbing and reducing sound in the sound barrier is a sound-absorbing screen plate. The existing highway sound barrier generally adopts metal casing to fill sound absorption cotton as a screen board, and the sound absorption cotton can age along with the time extension in the use process of the sound barrier, so that secondary pollution is generated. Therefore, there is a need to develop a new sound-absorbing material and a sound-absorbing screen panel thereof, which can replace sound-absorbing cotton, is more environmentally friendly, and does not cause environmental pollution in long-term use.
Disclosure of Invention
The utility model discloses a metal ceramsite composite sound absorption screen plate for a sound barrier of an expressway, which is based on the defects of the prior art. The utility model aims to provide the metal ceramsite composite sound absorption screen plate which is light, excellent in performance, more environment-friendly and free of environmental pollution after long-term use.
The utility model is realized by the following technical scheme:
the utility model provides a compound sound absorption screen board of metal haydite for sound barrier, constitutes sheet-like cubic box structure, its characterized in that by metal decking, backplate, both sides end plate, upper end roof and lower extreme bottom plate: the rear side of the panel in the sheet-shaped cubic box is bonded with a microporous ceramsite sound-absorbing plate with the thickness of one tenth to one half of the total thickness of the section of the box body, a sound-absorbing resonance cavity is formed between the rear side of the microporous ceramsite sound-absorbing plate and the back plate, panel through holes are uniformly formed in the surface of the panel made of a galvanized plate or an aluminum alloy plate, and the total area of the panel through holes is more than thirty percent of the total area of the panel.
The panel through holes are round holes, waist-shaped holes or/and rectangular holes penetrating through the panel.
The micropore ceramsite sound absorption plate is a rectangular thin plate with the cross section of 10-50mm thickness, which is formed by mixing micropore ceramsite and adhesive and then pressing.
The thickness of the cross section formed between the rear side of the microporous ceramsite sound absorption plate and the back plate is a sound absorption resonance cavity of 50-90 mm.
The sound absorption coefficient of the sound absorption screen plate is more than 0.65, and the surface density is less than 30kg per square meter.
The top plate at the upper end is provided with an installation bulge, the bottom plate at the lower end is provided with an installation groove, and the installation bulge is matched with the installation groove in shape and is used for positioning and fixing the sound absorption screen board during folding installation.
The thickness of the microporous ceramsite sound absorption plate is preferably one fifth of the total thickness of the section of the box body.
The sound absorption screen plate adopts the louver perforated plate as the panel, the micropore ceramsite material with the three-dimensional reticular pore structure which is in disordered communication is pasted as the sound absorption material, the sound absorption screen plate material contains a large number of micropores which are widely distributed, the micropores are mutually connected to attenuate sound waves before the sound waves enter the cavity, the sound absorption effect is excellent, the sound waves pass through the surface layer and then are mutually interfered and reflected in the cavity to be further attenuated, and the sound absorption screen plate has better attenuation effect on medium and low frequency noise. Compared with the glass wool material, the absorption material prepared from the microporous ceramsite material has the advantages that the environment cannot be polluted again in the use process, and the sound absorption effect is good. The noise reduction mode of the sound barrier is various, and the utility model aims to provide a better and more intentional choice for selecting the sound barrier body of the highway.
Drawings
FIG. 1 is a schematic cross-sectional view of the acoustical panel of the present invention;
FIG. 2 is a schematic view of an acoustical panel of the present invention.
In the figure, 1 is a panel, 2 is a micropore ceramsite sound absorption plate, 3 is a sound absorption resonance cavity, 4 is a back plate, 5 is a mounting protrusion, 6 is a mounting groove, and 7 is a panel perforation.
Detailed Description
The present invention is further described below in conjunction with the following detailed description, which is intended to further illustrate the principles of the utility model and is not intended to limit the utility model in any way, but is equivalent or analogous to the present invention without departing from its scope.
With reference to the attached drawings.
As shown in the figure, the metal ceramsite composite sound absorption screen board for the sound barrier of the present embodiment is a thin plate-shaped cubic box structure composed of a metal panel 1, a back plate 4, two side end plates, an upper end top plate 5 and a lower end bottom plate 6, wherein the two end plate surfaces are shown in the figure. The rear side of a panel 1 in the sheet-shaped cubic box is bonded with a microporous ceramsite sound-absorbing plate 2 with the thickness being one fifth of the total thickness of the section of the box, a sound-absorbing resonance cavity 3 is formed between the rear side of the microporous ceramsite sound-absorbing plate 2 and a back plate 4, panel through holes 7 are uniformly arranged on the surface of the panel 1, and the total area of the panel through holes 7 is more than thirty percent of the total area of the panel 1.
The panel through-hole 7 is a circular hole, a kidney-shaped hole or/and a rectangular hole penetrating the panel. Shown in this illustration are circular holes.
In the figure, the microporous ceramsite sound absorption plate 2 is a rectangular thin plate with the cross section of 10-50mm, which is formed by mixing microporous ceramsite and an adhesive and then pressing, and the example is a rectangular thin plate with the thickness of 20 mm. The thickness of the cross section formed between the rear side of the microporous ceramsite sound absorption plate 2 and the back plate 4 is 50-90mm of sound absorption resonance cavity 3, in this example, 80mm of sound absorption resonance cavity 3.
The sound absorption coefficient of the sound absorption screen plate is more than 0.65, and the surface density is less than 30kg per square meter.
The top plate at the upper end of the sound absorption screen plate is provided with an installation bulge 5, the bottom plate at the lower end is provided with an installation groove 6, and the installation bulge 5 is matched with the installation groove 6 in shape and is used for positioning and fixing the sound absorption screen plate during overlapping installation.
As shown in the figure, the metal ceramsite composite sound absorption screen board for the sound barrier in the embodiment is made of an aluminum plate by rolling and forming, and the aperture ratio of the panel 1 is not less than 30%.
The microporous ceramsite acoustic board 2 is a ceramsite thin board with the thickness of 20mm, which is formed by stirring, pressing, molding and curing microporous ceramsite and inorganic adhesive, and the strength of the microporous ceramsite acoustic board is 6 MPa-15 MPa. When the porous ceramsite sound absorption board is processed and manufactured, the porous ceramsite sound absorption board 2 is bonded on the perforated panel 1 through structural adhesive.
Claims (7)
1. The utility model provides a compound sound absorption screen board of metal haydite for sound barrier, constitutes sheet-like cubic box structure, its characterized in that by metal decking, backplate, both sides end plate, upper end roof and lower extreme bottom plate: the rear side of the panel in the sheet-shaped cubic box is bonded with a microporous ceramsite sound-absorbing plate with the thickness of one tenth to one half of the total thickness of the section of the box body, a sound-absorbing resonance cavity is formed between the rear side of the microporous ceramsite sound-absorbing plate and the back plate, panel through holes are uniformly formed in the surface of the panel made of a galvanized plate or an aluminum alloy plate, and the total area of the panel through holes is more than thirty percent of the total area of the panel.
2. The metal-ceramic composite sound absorbing panel for a sound barrier of claim 1, wherein: the panel through holes are round holes, waist-shaped holes or/and rectangular holes penetrating through the panel.
3. The metal-ceramic composite sound absorbing panel for a sound barrier of claim 2, wherein: the micropore ceramsite sound absorption plate is a rectangular thin plate with the cross section of 10-50mm thickness, which is formed by mixing micropore ceramsite and adhesive and then pressing.
4. The metal-ceramic composite sound absorbing panel for a sound barrier of claim 2, wherein: the thickness of the cross section formed between the rear side of the microporous ceramsite sound absorption plate and the back plate is a sound absorption resonance cavity of 50-90 mm.
5. The metal-ceramic composite sound absorbing panel for a sound barrier of claim 2, wherein: the sound absorption coefficient of the sound absorption screen plate is more than 0.65, and the surface density is less than 30kg per square meter.
6. The metal-ceramic composite sound absorbing panel for a sound barrier as recited in any one of claims 1 to 5, wherein: the top plate at the upper end is provided with an installation bulge, the bottom plate at the lower end is provided with an installation groove, and the installation bulge is matched with the installation groove in shape and is used for positioning and fixing the sound absorption screen board during folding installation.
7. The metal-ceramic composite sound absorbing screen panel for a sound barrier of claim 6, wherein: the thickness of the micropore ceramsite sound absorption plate is one fifth of the total thickness of the section of the box body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120988588.1U CN215405677U (en) | 2021-05-10 | 2021-05-10 | Metal ceramsite composite sound absorption screen board for sound barrier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120988588.1U CN215405677U (en) | 2021-05-10 | 2021-05-10 | Metal ceramsite composite sound absorption screen board for sound barrier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215405677U true CN215405677U (en) | 2022-01-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120988588.1U Active CN215405677U (en) | 2021-05-10 | 2021-05-10 | Metal ceramsite composite sound absorption screen board for sound barrier |
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| Country | Link |
|---|---|
| CN (1) | CN215405677U (en) |
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2021
- 2021-05-10 CN CN202120988588.1U patent/CN215405677U/en active Active
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