CN214656514U - Grouped semicircular sound absorption cap structure sound barrier - Google Patents
Grouped semicircular sound absorption cap structure sound barrier Download PDFInfo
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- CN214656514U CN214656514U CN202120448347.8U CN202120448347U CN214656514U CN 214656514 U CN214656514 U CN 214656514U CN 202120448347 U CN202120448347 U CN 202120448347U CN 214656514 U CN214656514 U CN 214656514U
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Abstract
The utility model relates to a group of semicircular sound absorption cap structure sound barrier, which comprises a sound insulation board, a sound absorption board and a group of foamed aluminum sound absorption caps; the sound insulation board is vertically arranged on a bridge anti-collision wall or a roadbed hard road shoulder, the top of the sound insulation board is vertically provided with a sound absorption board, and the top of the sound absorption board and one side close to a sound source are covered with a grouped foamed aluminum sound absorption cap. This semicircular sound absorption cap structure sound barrier in groups can effectively play the effect of making an uproar that falls in the sound absorption through foamed aluminum sound absorption cap in groups, and the inner structure through foamed aluminum sound absorption cap can further play the effect of isolation noise simultaneously, and the sound absorption falls the noise frequency extensively, and the sound insulation effect is good, and specially adapted falls the measure as highway engineering noise reduction.
Description
Technical Field
The utility model relates to a sound barrier technical field, in particular to semi-circular acoustic absorption cap structure sound barrier in groups.
Background
Road engineering inevitably passes through acoustic environment sensitive areas such as residential areas, villages, schools, hospitals and the like, and noise pollution brought by vehicles coming and going to the acoustic environment sensitive points in the operation period influences the living environment of people. According to the highway environmental protection design specification (JTG B04-2010), noise reduction comprehensive prevention and control design is carried out on sound environment sensitive points needing prevention and control according to a highway construction project environment influence evaluation file, and a staged implementation scheme is provided. The arrangement of the sound barriers at two sides of the road is a direct noise reduction measure, and the sound barriers can be adopted when the road is close to an environment sensitive point, the land is limited, and the environmental noise exceeds 5 dB.
The audible frequency of human beings is between 20-20KHz, the low frequency is below 500Hz, the medium frequency is 500-2000Hz, and the high frequency is above 2000 Hz. The noise of highway operation period is mainly from motor vehicles, and is formed by combining sound with a plurality of frequencies, for example, whistling sound is high-frequency noise, tire noise and engine sound are low-frequency noise, so that the problem of controlling the noise with different frequencies on the highway is a highway noise control problem.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problem, the utility model provides a sound absorption and noise reduction audio frequency is wide, and gives sound insulation the better semi-circular sound absorption cap structure sound barrier in groups of effect.
The utility model adopts the technical proposal that:
a group semicircular sound absorption cap structure sound barrier comprises a sound insulation plate, a sound absorption plate and a group foamed aluminum sound absorption cap; the sound insulation board is vertically arranged on a bridge anti-collision wall or a roadbed hard road shoulder, the top of the sound insulation board is vertically provided with a sound absorption board, and the top of the sound absorption board and one side close to a sound source are covered with a grouped foamed aluminum sound absorption cap.
Preferably, foamed aluminum sound absorption cap is whole to be the bar, comprises outer foamed aluminum puigging and base plate, and on the base plate passed through bolt fastening in the acoustic baffle, the semi-circular strip plate body of outer foamed aluminum puigging, the surface was little through-hole foamed aluminum structure, its opening towards base plate one side, and be formed with the vacuum cavity structure between the base plate.
Preferably, a plurality of inner foamed aluminum sound insulation layers are further arranged in the vacuum cavity structure between the outer foamed aluminum sound insulation layer and the base plate; the inner foamed aluminum sound insulation layers are semicircular strip-shaped plate bodies, the openings of the inner foamed aluminum sound insulation layers face one side of the base plate, and the inner foamed aluminum sound insulation layers and the cross-sectional circle centers of the outer foamed aluminum sound insulation layers are coaxial and are arranged at equal intervals; a plurality of layers of vacuum cavity structures are formed among the plurality of inner foamed aluminum sound-insulating layers and among the plurality of inner foamed aluminum sound-insulating layers, the base plate and the outer foamed aluminum sound-insulating layer.
Preferably, the foamed aluminum sound absorption cap further comprises a support plate, wherein the support plate is perpendicular to the base plate and can fix the outer foamed aluminum sound insulation layer and the inner foamed aluminum sound insulation layer.
The utility model has the advantages that:
this semicircular sound absorption cap structure sound barrier in groups can effectively play the effect of making an uproar that falls in the sound absorption through foamed aluminum sound absorption cap in groups, and the inner structure through foamed aluminum sound absorption cap can further play the effect of isolation noise simultaneously, and the sound absorption falls the noise frequency extensively, and the sound insulation effect is good, and specially adapted falls the measure as highway engineering noise reduction.
Drawings
FIG. 1 is a schematic sectional view of the present invention;
fig. 2 is a schematic front structural view of the present invention;
FIG. 3 is a schematic view of the position of the foamed aluminum sound absorption cap of the present invention;
FIG. 4 is a schematic structural view of the foamed aluminum sound absorption cap of the present invention;
in fig. 1-4, 1-sound insulation board, 2-sound absorption board, 3-foamed aluminum sound absorption cap, 4-outer foamed aluminum sound insulation layer, 5-base plate, 6-vacuum cavity structure, 7-inner foamed aluminum sound insulation layer, 8-support plate.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without any creative effort belong to the protection scope of the present invention.
As shown in fig. 1-3, the utility model relates to a group's semicircular sound absorption cap structure sound barrier, this group's semicircular sound absorption cap structure sound barrier includes sound insulation board 1, acoustic baffle 2 and group's foamed aluminum acoustic cap 3. On sound insulation board 1 was vertical located bridge anticollision wall or the hard shoulder of road bed, its top was vertical to be equipped with acoustic baffle 2, and acoustic baffle 1 and acoustic baffle 2 accessible metal crate or other modes are fixed, and acoustic baffle 2 top and be close to sound source one side and cover have a foam aluminium sound absorption cap in groups 3, and foam aluminium sound absorption cap in groups 3's primary function is for the sound absorption fall make an uproar and noise isolation.
The concrete structure of the foamed aluminum sound absorption cap is as follows:
foamed aluminum sound absorption cap 3 wholly is the bar, comprises outer foamed aluminum puigging 4 and base plate 5, and on base plate 5 passed through bolt fastening in acoustic baffle 2, the semi-circular strip plate body of outer foamed aluminum puigging 4, the surface was little through-hole foamed aluminum structure, and 4 openings of outer foamed aluminum puigging are formed with vacuum cavity structure 6 towards base plate 5 one side between outer foamed aluminum puigging 4 and the base plate 5. The foamed aluminum sound absorption cap 3 can play a role in sound absorption and noise reduction through a micro through hole foamed aluminum structure on the outer surface of the outer foamed aluminum sound insulation layer 4; through vacuum cavity structure 6, can play the effect of isolation noise.
On the basis of the technical scheme, in order to further increase the noise insulation effect of the foamed aluminum sound absorption cap 3, as shown in fig. 4, an inner foamed aluminum sound insulation layer 7 is further arranged in a vacuum cavity structure 6 between the outer foamed aluminum sound insulation layer 4 and the base plate 5; the inner foamed aluminum sound insulation layer 7 is a semicircular strip-shaped plate body, and the opening of the inner foamed aluminum sound insulation layer faces one side of the base plate 5 and is coaxial with the circle center of the section of the outer foamed aluminum sound insulation layer 4; two layers of vacuum cavity structures 6 are formed between the inner foamed aluminum sound-proof layer 7 and the base plate 5 and the outer foamed aluminum sound-proof layer 4. The noise insulation effect of the foamed aluminum acoustic absorption cap 3 can be further increased by the two-layer vacuum cavity structure 6.
It is noted that in fig. 4, an inner aluminum foam acoustical layer 7 is shown, as well as the resulting two-layer vacuum cavity structure 6. Vacuum cavity structure 6 between outer foamed aluminum puigging 4 and base plate 5 can set up a plurality of interior foamed aluminum puigging 7 under the condition that spatial dimension satisfies, a plurality of interior foamed aluminum puigging 7 are with semi-circular strip plate body, and the opening all faces base plate 5 one side, coaxial with the cross-section centre of a circle of outer foamed aluminum puigging 4, equidistant setting, between a plurality of interior foamed aluminum puigging 7, and can be formed with a plurality of layers of vacuum cavity structure 6 between a plurality of interior foamed aluminum puigging 7 and base plate 5 and the outer foamed aluminum puigging 4. The more the number of layers of the vacuum cavity structure 6 is, the stronger the noise isolation function of the foamed aluminum sound absorption cap 3 is.
The fixing mode of outer foamed aluminum sound-proof layer and inner foamed aluminum sound-proof layer is as follows:
outer foamed aluminum puigging 4 and interior foamed aluminum puigging 7 accessible multiform and 5 fixed connection of base plate, the utility model discloses a through the fixed outer foamed aluminum puigging 4 of mounting panel 8 and interior foamed aluminum puigging 7, mounting panel 8 is perpendicular with base plate 5, its bottom and 5 fixed connection of base plate, and its top is used for fixed outer foamed aluminum puigging 4 and interior foamed aluminum puigging 7.
Claims (4)
1. A group semicircular sound absorption cap structure sound barrier is characterized in that: the sound barrier with the group of semicircular sound absorption cap structures comprises a sound insulation plate, a sound absorption plate and a group of foamed aluminum sound absorption caps; the sound insulation board is vertically arranged on a bridge anti-collision wall or a roadbed hard road shoulder, the top of the sound insulation board is vertically provided with a sound absorption board, and the top of the sound absorption board and one side close to a sound source are covered with a grouped foamed aluminum sound absorption cap.
2. The set of semicircular acoustic cap structure sound barriers of claim 1, wherein: foamed aluminum acoustic cap wholly is the bar, comprises outer foamed aluminum puigging and base plate, and on the base plate passed through bolt fastening in the acoustic baffle, the semi-circular strip plate body of outer foamed aluminum puigging, the surface was little through-hole foamed aluminum structure, and its opening is towards base plate one side, and is formed with the vacuum cavity structure between the base plate.
3. The set of semicircular acoustic cap structure sound barriers of claim 2, wherein: a plurality of inner foamed aluminum sound insulation layers are also arranged in the vacuum cavity structure between the outer foamed aluminum sound insulation layer and the base plate; the inner foamed aluminum sound insulation layers are semicircular strip-shaped plate bodies, the openings of the inner foamed aluminum sound insulation layers face one side of the base plate, and the inner foamed aluminum sound insulation layers and the cross-sectional circle centers of the outer foamed aluminum sound insulation layers are coaxial and are arranged at equal intervals; a plurality of layers of vacuum cavity structures are formed among the plurality of inner foamed aluminum sound-insulating layers and among the plurality of inner foamed aluminum sound-insulating layers, the base plate and the outer foamed aluminum sound-insulating layer.
4. The set of semicircular acoustic cap structure sound barriers of claim 3, wherein: foamed aluminum sound absorption cap still includes the mounting panel, and the mounting panel is perpendicular with the base plate, can fix outer foamed aluminum puigging and interior foamed aluminum puigging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120448347.8U CN214656514U (en) | 2021-03-02 | 2021-03-02 | Grouped semicircular sound absorption cap structure sound barrier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120448347.8U CN214656514U (en) | 2021-03-02 | 2021-03-02 | Grouped semicircular sound absorption cap structure sound barrier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214656514U true CN214656514U (en) | 2021-11-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120448347.8U Active CN214656514U (en) | 2021-03-02 | 2021-03-02 | Grouped semicircular sound absorption cap structure sound barrier |
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| Country | Link |
|---|---|
| CN (1) | CN214656514U (en) |
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2021
- 2021-03-02 CN CN202120448347.8U patent/CN214656514U/en active Active
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