CN208072251U - A kind of full frequency band sound absorption cell board and novel sound barrier - Google Patents
A kind of full frequency band sound absorption cell board and novel sound barrier Download PDFInfo
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- CN208072251U CN208072251U CN201820333388.0U CN201820333388U CN208072251U CN 208072251 U CN208072251 U CN 208072251U CN 201820333388 U CN201820333388 U CN 201820333388U CN 208072251 U CN208072251 U CN 208072251U
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Abstract
The utility model belongs to sound barrier technical field, concretely relates to a kind of full frequency band sound absorption cell board and novel sound barrier.Its main technical schemes：Mainly by structural framing, it is respectively arranged at the punching panel and beading backboard of two sides inside and outside structural framing, the full frequency band composite sound absorbing mechanism being set between punching panel and beading backboard is constituted, wherein, full frequency band composite sound absorbing mechanism includes low-frequency acoustical board, medium-high frequency acoustic board and resonance sound-absorbing air chamber, low-frequency acoustical board is close to punching panel, medium-high frequency acoustic board is close to beading backboard, resonance sound-absorbing chamber includes the first air layer between low-frequency acoustical board and medium-high frequency acoustic board and the second air layer between medium-high frequency acoustic board and beading backboard, the thickness of second air layer is more than the thickness of the first air layer.The full frequency band absorb sound cell board and sound barrier have the characteristics that can full frequency band sound absorption, structural strength height and durability degree it is good.
Description
Technical field
The utility model belongs to sound barrier technical field, concretely relates to a kind of full frequency band sound absorption cell board and Novel iron
Road sound barrier.
Background technology
Transportation one of is the pillar industries of the national economy, and high-speed railway is minimus in China Transportation Industry
Core component, with the development that China's high ferro technology is maked rapid progress, train speed is constantly soaring, while Railway Vibration and making an uproar
The environmental problem that vocal cords come increasingly aggravates, and the resident of railway both sides is disturbed by it deeply.Improve civic living environment to have become currently
A vital task in city-building is assembled with sound barrier in more and more railway both sides.
The sound absorption cell board internal structure of traditional sound barrier is single, and sound-absorbing material mostly uses filling rock wool fibers, such suction
Sound plate can not achieve full frequency band sound absorption and require, and be easy to be influenced and aging by environment such as humidity, ultraviolet lights, the sound absorption of sound barrier
Effect can significantly reduce；In view of the above-mentioned problems, some sound barriers are absorbed sound using metal material such as aluminum fiber acoustic board, aluminum foam
Plate, such sound-absorbing material all has preferable sound absorbing performance in high, medium and low frequency area, but durability is poor, is easy to be rusted,
Production cost is higher, especially for the low frequency noise that the bullet train more than 200km/h generates when driving, generates fiercely
Pulsed air pressure loading, the structure and internal component impact force to sound barrier are extremely strong, easily sound barrier are caused to damage.
Utility model content
The purpose of this utility model be just to provide it is a kind of can that full frequency band sound absorption, structural strength be high and durability degree is good be complete
Frequency range sound absorption cell board and novel sound barrier.
To achieve the above object, technical solution used by the utility model is：
A kind of full frequency band sound absorption cell board, it is characterised in that：Mainly by structural framing, it is respectively arranged at the structural framing
The punching panel and beading backboard of inside and outside two sides, the full frequency band being set between the punching panel and beading backboard
Composite sound absorbing mechanism is constituted, wherein full frequency band composite sound absorbing mechanism includes low-frequency acoustical board, medium-high frequency acoustic board and is total to
Shake sound absorption air chamber, the low-frequency acoustical board close to the punching panel, the medium-high frequency acoustic board close to the beading backboard,
The resonance sound-absorbing air chamber includes the first air layer between the low-frequency acoustical board and medium-high frequency acoustic board and is located at
The thickness of the second air layer between the medium-high frequency acoustic board and beading backboard, second air layer is more than first sky
The thickness of gas-bearing formation.
The additional technical feature for constituting a kind of above-mentioned full frequency band sound absorption cell board further includes：
--- the low frequency absorption plate thickness is in 10mm between 15mm；
--- the low-frequency acoustical board is porous ceramic plate, and the sound absorption bore dia of the porous ceramic plate is at 0.1 μm to 300
Between μm；
--- the thickness of the medium-high frequency acoustic board is in 20mm between 45mm；
--- the medium-high frequency acoustic board is hole-opening foaming polyurethane sheet, and the sound-absorbing hole of the hole-opening foaming polyurethane sheet is straight
Diameter is between 100 μm to 650 μm；
--- the thickness of first air layer and the second air layer in 4cm between 10cm, and second air layer
And the difference of the thickness of the first air layer is in 2cm between 4cm；
--- the punching panel and beading backboard are made of aluminium alloy, and the sound absorption bore dia of the punching panel exists
For 25mm between 45mm, punching density is 80/square metre to 120/square metre, and porosity is 35% to 55%；
--- the structural framing is made of aluminium alloy, and the left and right sides of the structural framing, which has, is convenient for cell board socket joint
The strip rectangle unfilled corner of docking, edge is arranged inside and outside the structural framing is bent to the inside of the strip rectangle unfilled corner
Head sealing sheet；
--- structural framing upper and lower ends setting head cover and bottom plate, the head cover and bottom plate have card slot, for
It is fixed inside and outside the structural framing.
The utility model additionally provides a kind of novel sound used for high-speed railway using the sound absorption cell board assembling of above-mentioned full frequency band
Barrier, technical solution are：
--- it is connected for I-shaped support keel by section between the structural framing of adjacent two module units plate, it is described
The left and right sides of support keel forms the groove body for fixing the structural framing, and the slot arm of the groove body is inserted into the strip square
In shape unfilled corner, and be engaged by the head sealing sheet, the support keel and the structural framing, head cover, bottom plate contact site with
And the head cover, bottom plate and the contact site of the structural framing are fixed with rivet.
A kind of full frequency band sound absorption cell board provided by the utility model and its novel sound barrier compared with prior art, have
It has the advantage that：First, due to the structure of the sound absorption cell board include be set to it is complete between punching panel and beading backboard
Frequency range composite sound absorbing mechanism, internal resonance sound-absorbing air chamber includes between low-frequency acoustical board and medium-high frequency acoustic board
First air layer and the second air layer between medium-high frequency acoustic board and beading backboard, can increase adjacent sound absorption panel vibration
Damping loss, improve whole acoustic absorptivity, the thickness of the second air layer is more than the thickness of the first air layer, passes through and combines two kinds
Various sizes of resonance sound-absorbing chamber, absorbs a bit of frequency band respectively, so that total frequency band is broadened, takes different thickness difference, can make
Acoustic absorptivity reaches 0.9 or more, and wide band sound absorption is up to 2-3 octaves, therefore the resonance composite sound absorbing mechanism can meet entirely
Frequency range sqouynd absorption lowering noise requirement, using effect are excellent；Second, due to low-frequency acoustical board be porous ceramic plate, porous ceramic plate at
In shape and high-temperature sintering process, inside forms the largely stomatas that communicate with each other or be closed, and form equally distributed micropore or
Hole has the characteristics that porosity compared with high, bulk density is small, specific surface is larger, to absorbing low-frequency noise significant effect, sound absorption
Bore dia maintains certain percent opening under the premise of ensureing sound absorbing performance, in turn ensures itself between 0.1 μm to 300 μm
Structural strength, the pulsed air pressure loading ability that anti-low frequency noise is brought are more preferable；Third, since the medium-high frequency acoustic board is to open
Hole polyurathamc plate, sound absorption bore dia have good damping sound absorbing mechanism, surface has between 100 μm to 650 μm
Go deep into the hole of a large amount of small connections of material internal, medium-high frequency sound wave is deeply internal along these holes, rubs with material
It wipes and converts acoustic energy to thermal energy, centering high frequency noise sound absorption effect protrudes.
Description of the drawings
Fig. 1 is a kind of cross-sectional structure schematic top plan view of full frequency band sound absorption cell board of the utility model；
Fig. 2 is the socket joint attachment structure schematic diagram of full frequency band sound absorption cell board；
Fig. 3 is a kind of vertical section structure schematic diagram of novel sound barrier used for high-speed railway of the utility model.
Specific implementation mode
Below in conjunction with the accompanying drawings to a kind of full frequency band sound absorption cell board provided by the utility model and its novel sound barrier
Structure and operation principle are described in further detail.
As shown in Figure 1, for a kind of structural schematic diagram of full frequency band sound absorption cell board provided by the utility model.Constituting should
The structure of full frequency band sound absorption cell board is respectively arranged at the punching of 1 inside and outside two side of structural framing mainly by structural framing 1
Panel 2 and beading backboard 3, the full frequency band composite sound absorbing mechanism being set between punching panel 2 and beading backboard 3 are constituted,
In, full frequency band composite sound absorbing mechanism includes low-frequency acoustical board 4, medium-high frequency acoustic board 5 and resonance sound-absorbing air chamber 6, and low frequency is inhaled
Sound plate 4 is close to punching panel 2, and for medium-high frequency acoustic board 5 close to beading backboard 3, resonance sound-absorbing air chamber 6 includes being located at low frequency absorption
The first air layer 61 between plate 4 and medium-high frequency acoustic board 5 and second between medium-high frequency acoustic board 5 and beading backboard 3
Air layer 62, the thickness of the second air layer 62 are more than the thickness of the first air layer 61.
Its working principle is that：Punching panel 2 is arranged in 1 inside of structural framing of the full frequency band acoustic board, for absorbing sound wave,
1 outside setting beading backboard 3 of structural framing, for sound wave to be isolated, low-frequency acoustical board is followed successively by inside structural framing 1 from inside to outside
4, medium-high frequency acoustic board 5 and positioned between low-frequency acoustical board 4 and medium-high frequency acoustic board 5 the first air layer 61 and be located at
The second air layer 62 between medium-high frequency acoustic board 5 and beading backboard 3 can increase the damping loss of adjacent sound absorption panel vibration,
Whole acoustic absorptivity is improved, the thickness of the second air layer 62 is more than the thickness of the first air layer 61, by adjusting two kinds of different rulers
Very little resonance sound-absorbing chamber, absorbs a bit of frequency band respectively, so that total frequency band is broadened, takes different thickness difference, can make the sound absorption be
Number reaches 0.9 or more, and wide band sound absorption meets full frequency band sqouynd absorption lowering noise requirement up to 2-3 octaves.
In constituting the structure that above-mentioned full frequency band absorbs sound cell board,
--- in order to obtain better low frequency absorption noise reduction, 4 thickness of above-mentioned low-frequency acoustical board 10mm to 15mm it
Between；
--- preferred, above-mentioned low-frequency acoustical board 4 is porous ceramic plate, sound absorption bore dia 0.1 μm to 300 μm it
Between, not only ensured that effect of low-frequency sound absorption maintained certain percent opening, but also can guarantee the structural strength of porous ceramic plate, had made it have good
The pulsed air pressure loading ability that good resistance low frequency noise is brought；
--- in order to obtain better medium-high frequency sqouynd absorption lowering noise effect, the thickness of the medium-high frequency acoustic board 5 20mm extremely
Between 45mm；
--- preferred, above-mentioned medium-high frequency acoustic board 5 is hole-opening foaming polyurethane sheet, sound absorption bore dia at 100 μm extremely
Between 650 μm, it ensure that open cell type polyurathamc plate has good damping sound absorbing mechanism, surface, which has, gos deep into material internal
The hole of a large amount of small connections, medium-high frequency sound wave is deeply internal along these holes, and friction, which occurs, with material converts acoustic energy
For thermal energy；
--- as a kind of preferable embodiment, the thickness of 61 and second air layer 62 of above-mentioned first air layer is in 4cm
To between 10cm, and the difference of the thickness of the second air layer 62 and the first air layer 61 in 2cm between 4cm, in practice it has proved that, according to
Different geographical environment does corresponding adjustment, can reach satisfied full frequency band sqouynd absorption lowering noise effect；
--- above-mentioned punching panel 2 and beading backboard 3 are made of aluminium alloy, and the sound absorption bore dia of punching panel 2 exists
For 25mm between 45mm, punching density is 80/square metre to 120/square metre, and porosity is 35% to 55%, has quality
Light, processing is simple, absorbs the good feature of sound wave effect；
--- as shown in Fig. 2, in order to improve the integral strength of cell board, above structure frame 1 is made of aluminium alloy, structure
The left and right sides of frame 1 has the strip rectangle unfilled corner 7 convenient for the docking of cell board socket joint, edge inside and outside structural framing 1
The head sealing sheet 8 being bent to the inside of strip rectangle unfilled corner 7 is set, that is, is convenient for cell board assembly and connection, is easy to construct；
--- head cover 9 and bottom plate 10 is arranged in 1 upper and lower ends of above structure frame, and head cover 9 and bottom plate 10 have card slot（11,
12）, for be fixed inside and outside structural framing 1, improve the closed of cell board, increase to inner sound absorption structure
The protection of part enhances the durability degree of sound absorption cell board.
In structure by the novel sound barrier used for high-speed railway of above-mentioned full frequency band sound absorption cell board assembling,
--- as shown in figure 3, between the structural framing 1 of adjacent two module units plate by section be I-shaped support keel 13
Connection, the left and right sides of support keel 13 form the groove body 14 for fixed structure frame 1, and the slot arm 15 of groove body 14 is inserted into strip
In rectangle unfilled corner 7, and be engaged by head sealing sheet 8, support keel 13 and structural framing 1, head cover 9, bottom plate 10 contact site and
Head cover 9, bottom plate 10 and the contact site of structural framing 1 use rivet 16 to fix, which has quick for installation, construction period
Short, structural strength is big, the feature that service life is long and full frequency band sqouynd absorption lowering noise effect is good.
Claims (10)
- The cell board 1. a kind of full frequency band absorbs sound, it is characterised in that：Mainly by structural framing, it is respectively arranged at the structural framing The punching panel and beading backboard of inside and outside two sides, the full frequency band being set between the punching panel and beading backboard are multiple It closes sound absorption mechanism to constitute, wherein full frequency band composite sound absorbing mechanism includes low-frequency acoustical board, medium-high frequency acoustic board and resonance Absorb sound air chamber, and the low-frequency acoustical board is close to the punching panel, and the medium-high frequency acoustic board is close to the beading backboard, institute Resonance sound-absorbing air chamber is stated to include the first air layer between the low-frequency acoustical board and medium-high frequency acoustic board and be located at institute The second air layer between medium-high frequency acoustic board and beading backboard is stated, the thickness of second air layer is more than first air The thickness of layer.
- The cell board 2. a kind of full frequency band according to claim 1 absorbs sound, it is characterised in that：The low frequency absorption plate thickness exists 10mm is between 15mm.
- The cell board 3. a kind of full frequency band according to claim 2 absorbs sound, it is characterised in that：The low-frequency acoustical board is porous Ceramic wafer, the sound absorption bore dia of the porous ceramic plate is between 0.1 μm to 300 μm.
- The cell board 4. a kind of full frequency band according to claim 1 absorbs sound, it is characterised in that：The thickness of the medium-high frequency acoustic board Degree is in 20mm between 45mm.
- The cell board 5. full frequency band according to claim 4 absorbs sound, it is characterised in that：The medium-high frequency acoustic board is sent out for trepanning Polyurethane sheet is steeped, the sound absorption bore dia of the hole-opening foaming polyurethane sheet is between 100 μm to 650 μm.
- The cell board 6. a kind of full frequency band according to claim 1 absorbs sound, it is characterised in that：First air layer and second The thickness of air layer is in 4cm between 10cm, and the difference of the thickness of second air layer and the first air layer is in 2cm to 4cm Between.
- The cell board 7. a kind of full frequency band according to claim 1 absorbs sound, it is characterised in that：The punching panel and the beading back of the body Plate is made of aluminium alloy, and for the sound absorption bore dia of the punching panel in 25mm between 45mm, punching density is 80/square For rice to 120/square metre, porosity is 35% to 55%.
- The cell board 8. a kind of full frequency band according to claim 1 absorbs sound, it is characterised in that：The structural framing is by aluminium alloy It is made, the left and right sides of the structural framing has the strip rectangle unfilled corner convenient for the docking of cell board socket joint, the structural framing Inside and outside edge the head sealing sheet being bent to the inside of the strip rectangle unfilled corner is set.
- The cell board 9. a kind of full frequency band according to claim 8 absorbs sound, it is characterised in that：The structural framing upper and lower ends Head cover and bottom plate are set, the head cover and bottom plate have card slot, for be fixed inside and outside the structural framing.
- 10. a kind of novel sound barrier is assembled by the full frequency band sound absorption cell board described in claim 9, it is characterised in that：Phase It is connected for I-shaped support keel by section between the adjacent structural framing, the left and right sides of the support keel, which is formed, to be used for The slot arm of the groove body of the fixed structural framing, the groove body is inserted into the strip rectangle unfilled corner, and is stung by the head sealing sheet It closes, the support keel and the structural framing, head cover, the contact site of bottom plate and the head cover, bottom plate and the structure The contact site of frame is fixed with rivet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820333388.0U CN208072251U (en) | 2018-03-12 | 2018-03-12 | A kind of full frequency band sound absorption cell board and novel sound barrier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820333388.0U CN208072251U (en) | 2018-03-12 | 2018-03-12 | A kind of full frequency band sound absorption cell board and novel sound barrier |
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| CN208072251U true CN208072251U (en) | 2018-11-09 |
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| CN201820333388.0U Active CN208072251U (en) | 2018-03-12 | 2018-03-12 | A kind of full frequency band sound absorption cell board and novel sound barrier |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111923508A (en) * | 2020-07-31 | 2020-11-13 | 珠海格力绿色再生资源有限公司 | Soundproof cotton, preparation method thereof and compressor |
| CN118007553A (en) * | 2024-03-15 | 2024-05-10 | 深圳市双禹王声屏障工程技术有限公司 | Integrated control method and device for road sound insulation and power generation and electronic equipment |
-
2018
- 2018-03-12 CN CN201820333388.0U patent/CN208072251U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111923508A (en) * | 2020-07-31 | 2020-11-13 | 珠海格力绿色再生资源有限公司 | Soundproof cotton, preparation method thereof and compressor |
| CN118007553A (en) * | 2024-03-15 | 2024-05-10 | 深圳市双禹王声屏障工程技术有限公司 | Integrated control method and device for road sound insulation and power generation and electronic equipment |
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 056300 No.1 Xiangsu Road, north industrial base, Taocheng District, Hengshui City, Hebei Province Patentee after: Hengshui Zhongyu Tiexin Environmental Protection Engineering Co.,Ltd. Patentee after: HEBEI TONGCHUANG TRAFFIC ENGINEERING MATCHING PRODUCT INDUSTRY TECHNOLOGY Co.,Ltd. Address before: 053000 Hengshui city of Hebei Province North Taocheng District industrial base rubber road No. 1 Patentee before: HENGSHUI CRCPR ENVIRONMENTAL PROTECTION ENGINEERING Co.,Ltd. Patentee before: HEBEI TONGCHUANG TRAFFIC ENGINEERING MATCHING PRODUCT INDUSTRY TECHNOLOGY Co.,Ltd. |
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| CP03 | Change of name, title or address |