CN208455510U - A kind of acoustic barrier unit board to be absorbed sound using fine sand - Google Patents
A kind of acoustic barrier unit board to be absorbed sound using fine sand Download PDFInfo
- Publication number
- CN208455510U CN208455510U CN201821105233.8U CN201821105233U CN208455510U CN 208455510 U CN208455510 U CN 208455510U CN 201821105233 U CN201821105233 U CN 201821105233U CN 208455510 U CN208455510 U CN 208455510U
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- China
- Prior art keywords
- fine sand
- sound
- unit board
- barrier unit
- backboard
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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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- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
- Building Environments (AREA)
Abstract
The utility model belongs to sound barrier technical field, is concretely related to a kind of acoustic barrier unit board to absorb sound using fine sand.A kind of its main technical schemes: acoustic barrier unit board to be absorbed sound using fine sand, including the closed chamber being made of panel, backboard and batten positioned at the panel, backboard two sides, mesh partition is vertically arranged in the closed chamber, fine sand is filled between the mesh partition and the backboard and constitutes sound absorption mechanism, opens up equally distributed perforation on the panel.The acoustic barrier unit board has the characteristics that structure is simple, easily manufactured and sound absorption effect is lasting.
Description
Technical field
The utility model belongs to sound barrier technical field, is concretely related to a kind of sound barrier unit to absorb sound using fine sand
Plate.
Background technique
As social economy is progressive and city size rapid development, urban transportation is to city political economy, culture and education, section
The influence on development of technology etc. is very big and an importance of urban construction.Urban transportation is mentioned for people's trip
While for convenient enjoyment many puzzlements also are brought to us, for example a large amount of highways are built up, urban light rail and high-speed iron
Road is open to traffic, and causes serious traffic noise to injure to the additional resident of road.In order to improve civic living environment, in road
Installation sound barrier becomes maximally efficient one of measure around along two sides and light rail, high-speed rail etc..
Sound barrier is generally integrally installed on both sides of the road by the splicing of several module unit plates, and current acoustic barrier unit board is by face
Plate, backboard and the sound-absorbing material being set between the two form, and wherein sound-absorbing material mostly uses greatly aluminum metal, glued board or propylene
Sour glass material is constituted, but these barriers tend to reflection rather than absorb sound wave, making an uproar in the barrier shell being made of panel
Therefore sound may increase；Some sound barriers have used the sound-absorbing materials such as rock wool or glass fibre, but fabricate these materials
Technique relatively fall behind, easily cause human injury；Furthermore this sound barrier sound absorption effect long-acting cannot be kept, wet environment
Under, the big heavy discount of sound absorption effect.
Utility model content
The purpose of this utility model is just to provide the use fine sand that a kind of structure is simple, easily manufactured and sound absorption effect is lasting
The acoustic barrier unit board of sound absorption.
To achieve the above object, the technology employed by the present utility model is
A kind of acoustic barrier unit board to be absorbed sound using fine sand, including by panel, backboard and it is located at the panel, backboard two sides
The closed chamber that constitutes of batten, be vertically arranged mesh partition in the closed chamber, the mesh partition and the backboard it
Between filling fine sand constitute sound absorption mechanism, open up equally distributed perforation on the panel.
Constitute a kind of additional technical feature of above-mentioned acoustic barrier unit board using fine sand sound absorption further include:
--- in the sound absorption mechanism fineness modulus of fine sand be 1.8 to 2.2 and partial size in 0.25mm between 0.35mm,
The thickness of fine sand is in 3mm between 8mm in the sound absorption mechanism；
--- punching rate on the panel between 15% to 20% and the diameter of perforation in 3mm between 6mm, the net
Eye partition is not more than the diameter of fine sand for the diameter of metal mesh and mesh；
--- the backboard is glass reinforced plastic hollow plate.
It is provided by the utility model it is a kind of using fine sand sound absorption acoustic barrier unit board compared with prior art, have with
Lower advantage: first, due to being vertically arranged mesh partition, mesh partition and back in the closed chamber (shell) of the acoustic barrier unit board
Fine sand is filled between plate and constitutes sound absorption mechanism, and fine sand is different, forms micropore between filled fine sand, can efficiently receive
Sound, acoustic absorptivity NRC reach 0.50-0.85；Second, since the acoustic barrier unit board includes panel, backboard and positioned at two sides
The closed chamber that batten is constituted, by between the mesh partition that the sound absorption mechanism that constitutes of fine sand filling is located at backboard and arranges vertically,
Cell board structure is simple, convenient processing and manufacture, and production cost is low.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of the acoustic barrier unit board using fine sand sound absorption of the utility model.
Specific embodiment
With reference to the accompanying drawing to a kind of structure of the acoustic barrier unit board using fine sand sound absorption provided by the utility model
It is described in further detail with working principle.
As shown in Figure 1, showing for a kind of structure of acoustic barrier unit board using fine sand sound absorption provided by the utility model
It is intended to.The structure for constituting the novel acoustic barrier unit board includes by panel 1, backboard 2 and batten positioned at panel 1,2 two sides of backboard
3 closed chambers constituted, are vertically arranged mesh partition 4 in closed chamber, and fine sand 5 is filled between mesh partition 4 and backboard 2 and is constituted
Sound absorption mechanism opens up equally distributed perforation 6 on panel 1.
Its working principle is that: panel 1, backboard 2 and the batten 3 of the sound barrier constitute closed chamber, inner vertical setting
Mesh partition 4 fills fine sand 5 between mesh partition 4 and backboard 2, because the micro-shape of every sand grains is irregular and only one
Without two, when polymerization is overstock together, a large amount of, irregular, interconnected micro hole is natively formd between sand grains
Gap, when sound is mapped to 4 surface of mesh partition from the perforation 6 on panel 1, sound wave can be penetrated inside fine sand 5, be propagated in pore
When, viscosity and the frictional resistance effect generated due to air movement is enable sound to gradate as thermal energy and consume, thus generated
Sound absorption.
In the structure for constituting a kind of above-mentioned acoustic barrier unit board using fine sand sound absorption,
--- in order to obtain preferable sound absorption effect, in above-mentioned sound absorption mechanism the fineness modulus of fine sand 5 be 1.8 to 2.2 and
Partial size is in 0.25mm between 0.35mm, and the thickness of fine sand 5 is in 3mm between 8mm in sound absorption mechanism；
Size, quantity, structural form of pore etc. are close between the high, medium and low frequency characteristic and sand grains of the sound absorption of fine sand filler
Cut phase is closed, and by the regulation to these pores, is achieved that the sound absorption adjustable function of frequency characteristic.For example sand grains partial size is larger,
Surface is aobvious thick mad, prominent to high frequency acoustical absorptivity；Sand grains partial size is smaller, and surface is fine and smooth, and centering low frequency absorption ability is strong, therefore thin
5 filler of sand is preferably divided into asperities and fine flour in its two sides, is able to achieve the assimilation effect to various frequency noises in this way.
--- preferably, 6 rate of perforation on above-mentioned panel 1 is between 15% to 20% and the diameter of perforation 6 is in 3mm to 6mm
Between, mesh partition 4 is not more than the diameter of fine sand 5 for the diameter of metal mesh and mesh, it can effective fixed fine sand 5, shape
Filler is overstock at polymerizeing；
--- as preferable embodiment, above-mentioned backboard 2 is glass reinforced plastic hollow plate, and noise is after the absorption of fine sand 5
After residual acoustic waves pass through glass reinforced plastic hollow plate, Transmission Attenuation occurs, realizes deadening.
Claims (4)
1. a kind of acoustic barrier unit board to be absorbed sound using fine sand, it is characterised in that: including by panel, backboard and positioned at the face
Plate, backboard two sides the closed chamber that constitutes of batten, be vertically arranged mesh partition in the closed chamber, the mesh partition with
Fine sand is filled between the backboard and constitutes sound absorption mechanism, opens up equally distributed perforation on the panel.
2. a kind of acoustic barrier unit board to be absorbed sound using fine sand according to claim 1, it is characterised in that: the sound absorption machine
In structure the fineness modulus of fine sand be 1.8 to 2.2 and partial size in 0.25mm between 0.35mm, the thickness of fine sand in the sound absorption mechanism
Degree is in 3mm between 8mm.
3. a kind of acoustic barrier unit board to be absorbed sound using fine sand according to claim 1, it is characterised in that: on the panel
Punching rate between 15% to 20% and the diameter of perforation in 3mm between 6mm, the mesh partition is metal mesh and mesh
Diameter is not more than the diameter of fine sand.
4. a kind of acoustic barrier unit board to be absorbed sound using fine sand according to claim 1, it is characterised in that: the backboard is
Glass reinforced plastic hollow plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821105233.8U CN208455510U (en) | 2018-07-12 | 2018-07-12 | A kind of acoustic barrier unit board to be absorbed sound using fine sand |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821105233.8U CN208455510U (en) | 2018-07-12 | 2018-07-12 | A kind of acoustic barrier unit board to be absorbed sound using fine sand |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208455510U true CN208455510U (en) | 2019-02-01 |
Family
ID=65170475
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821105233.8U Expired - Fee Related CN208455510U (en) | 2018-07-12 | 2018-07-12 | A kind of acoustic barrier unit board to be absorbed sound using fine sand |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208455510U (en) |
-
2018
- 2018-07-12 CN CN201821105233.8U patent/CN208455510U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190201 Termination date: 20210712 |