CN214301358U - Sound barrier - Google Patents
Sound barrier Download PDFInfo
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- CN214301358U CN214301358U CN202120025722.8U CN202120025722U CN214301358U CN 214301358 U CN214301358 U CN 214301358U CN 202120025722 U CN202120025722 U CN 202120025722U CN 214301358 U CN214301358 U CN 214301358U
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- front panel
- board
- flat plate
- cotton layer
- arc
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Abstract
The utility model belongs to the technical field of the sound barrier, a sound barrier is disclosed. The main technical characteristics are as follows: the shielding module comprises a plurality of shielding modules which are arranged up and down, each shielding module comprises a front panel, a silencing cotton layer and a rear panel, the front panel comprises an upper fixed flat plate, an upper arc-section plate, a middle flat plate, a lower arc-section plate and a lower fixed flat plate which are of an integrated structure, and silencing holes are formed in the upper arc-section plate, the middle flat plate and the lower arc-section plate. Go up fixed flat board, middle flat board and fixed flat board and amortization cotton layer laminating are in the same place down, it is fixed more firm, go up segmental arc board and segmental arc board down become the arcuation, under same height, the effective area of front panel has been improved, the whole area of bloop is bigger, the noise cancelling effect is better, the last segmental arc board and the segmental arc board shock resistance intensity are bigger down of arcuation, form the anechoic chamber between last segmental arc board and segmental arc board trailing flank and the amortization cotton layer down, sound gets into the anechoic chamber through the anechoic hole, the amortization area on amortization cotton layer is big, the noise cancelling effect further strengthens.
Description
Technical Field
The utility model belongs to the technical field of the sound barrier, especially, relate to a sound barrier.
Background
In order to reduce the influence of vehicle noise on the surrounding environment, sound barriers are installed on two sides of a railway or a highway in places such as railway bridges, residential areas and the like. The sound barrier that uses at present mainly adopts front panel, the cotton layer of amortization and rear panel, and it has the hole of amortization to open on the front panel, and the cotton layer of amortization is got into from the through-hole to the air, and the cotton layer of amortization carries out the amortization. The front panel of the sound barrier is a flat plate parallel to the running direction of a railway or a highway, and the sound barrier has the following defects: firstly, the front panel adopts a flat plate, so that the sound absorption area is small and the sound absorption effect is poor; secondly, the front panel is a flat plate, and air is not easy to enter the silencing holes in the process of flowing along the front panel; thirdly, the front panel is a plane panel, when the front panel is impacted by air, the strength is poor, in order to improve the impact strength, the thickness of the front panel is large, the ratio of the area of the opening to the whole area of the front panel is low, namely the opening rate is low, so that the air is less, the noise reduction effect is poor, the manufacturing cost is increased, and the front panel is easy to deform; fourthly, because the front panel is a flat plate, the silencing cotton layer is attached to the inner side of the front panel, and the silencing effect is poor.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide a sound barrier that low in construction cost, noise cancelling effect are good, impact strength is high, the front panel is difficult to warp.
In order to solve the above problem, the utility model discloses technical scheme that the sound barrier adopted does: the shielding module comprises a plurality of shielding modules which are arranged up and down, each shielding module comprises a front panel, a silencing cotton layer and a rear panel, the front panel comprises an upper fixed flat plate, an upper arc-section plate, a middle flat plate, a lower arc-section plate and a lower fixed flat plate which are of an integrated structure, and silencing holes are formed in the upper arc-section plate, the middle flat plate and the lower arc-section plate.
The additional technical characteristics are as follows:
the silencing hole is oval or round.
Compared with the prior art, the utility model provides a sound barrier has following advantage: firstly, because the protective screen comprises a plurality of protective screen modules which are arranged up and down, each protective screen module comprises a front panel, a silencing cotton layer and a rear panel, the front panel comprises an upper fixed flat plate, an upper arc-section plate, a middle flat plate, a lower arc-section plate and a lower fixed flat plate which are of an integrated structure, silencing holes are arranged on the upper arc-section plate, the middle flat plate and the lower arc-section plate, the upper fixed flat plate and the lower fixed flat plate are adhered with the silencing cotton layer, the fixation is firmer, the upper arc-section plate and the lower arc-section plate are arc-shaped, the effective area of the front panel is increased under the same height, the whole area of the silencing holes is larger, the silencing effect is better, under the condition of the same thickness, the arc-shaped upper arc-section plate and the lower arc-section plate have higher impact strength, the front panel is not easy to deform, a silencing cavity is formed between the rear side surfaces of the upper arc-section plate and the lower arc-section plate and the silencing cotton layer, and sound enters the silencing cavity through the silencing holes, the noise reduction cotton layer has large noise reduction area, the noise reduction effect is further enhanced, the whole front panel is wavy on a vertical plane, and when flowing air moves up and down along the surface of the front panel, the flowing air is reflected and silenced for many times according to the principle that fluid flows along a curved surface, so that the noise reduction effect is better; secondly, because the silencing holes are oval or round, the ratio of the total area of the silencing holes to the total area of the front panel is further improved, and the silencing effect is improved.
Drawings
Fig. 1 is a schematic structural view of the sound barrier of the present invention;
FIG. 2 is a schematic view of a barrier module;
FIG. 3 is a longitudinal cross-sectional view of a barrier module;
FIG. 4 is a schematic view of the construction of the front panel of a barrier module;
fig. 5 is a cross-sectional view of a front panel of one barrier module.
Detailed Description
The structure and the operation principle of the sound barrier of the present invention will be further described in detail with reference to the accompanying drawings and the detailed description.
As shown in fig. 1, fig. 2, fig. 3, fig. 4 and fig. 5, the utility model discloses the structural schematic diagram of sound barrier, the utility model discloses a plurality of barrier module 1 of arranging from top to bottom of sound barrier, every barrier module 1 includes front panel 2, the cotton layer 3 of amortization and rear panel 4, and front panel 2 is provided with the bloop 5 on last arc section board 22, middle flat board 23, lower arc section board 24 and lower fixed flat board 25 including last fixed flat board 21 of a body structure, last arc section board 22, middle flat board 23, lower arc section board 24. The upper fixing flat plate 21 and the lower fixing flat plate 25 are attached to the silencing cotton layer 3, so that the fixing is firmer. The upper arc section plate 22 and the lower arc section plate 24 are arc-shaped, the effective area of the front panel is increased under the same height, the whole area of the silencing hole 5 is larger, and the silencing effect is better. Under the condition of the same thickness, the arc-shaped upper arc-section plate 22 and the arc-shaped lower arc-section plate 24 have higher impact strength, the front panel 2 is not easy to deform, the silencing cavity 6 is formed between the rear side surfaces of the upper arc-section plate 22 and the lower arc-section plate 24 and the silencing cotton layer, sound enters the silencing cavity 6 through the silencing holes, the silencing area of the silencing cotton layer is large, and the silencing effect is further enhanced. The whole front panel is in a wave shape on a vertical plane, when flowing air moves up and down along the surface of the front panel 2, the flowing air is reflected and silenced for many times according to the principle that fluid flows along a curved surface, and the silencing effect is better.
The silencing holes 5 are oval or round, so that the ratio of the total area of the silencing holes to the total area of the front panel is further improved, and the silencing effect is improved.
The utility model discloses a protection scope not only limits in above-mentioned embodiment, as long as the structure with the utility model discloses sound barrier and special detection device structure are the same or similar, just fall the utility model discloses the scope of protection.
Claims (2)
1. The sound barrier, including a plurality of barrier modules of arranging from top to bottom, every the barrier module includes front panel, the cotton layer of amortization and rear panel, its characterized in that: the front panel comprises an upper fixed flat plate, an upper arc-shaped plate, a middle flat plate, a lower arc-shaped plate and a lower fixed flat plate which are of an integrated structure, and silencing holes are formed in the upper arc-shaped plate, the middle flat plate and the lower arc-shaped plate.
2. The sound barrier of claim 1, wherein: the silencing hole is oval or round.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120025722.8U CN214301358U (en) | 2021-01-06 | 2021-01-06 | Sound barrier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120025722.8U CN214301358U (en) | 2021-01-06 | 2021-01-06 | Sound barrier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214301358U true CN214301358U (en) | 2021-09-28 |
Family
ID=77822790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120025722.8U Active CN214301358U (en) | 2021-01-06 | 2021-01-06 | Sound barrier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214301358U (en) |
-
2021
- 2021-01-06 CN CN202120025722.8U patent/CN214301358U/en active Active
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