CN206127908U - Sound barrier cell board based on broadband microperforated panel acoustic absorber - Google Patents
Sound barrier cell board based on broadband microperforated panel acoustic absorber Download PDFInfo
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- CN206127908U CN206127908U CN201621056506.5U CN201621056506U CN206127908U CN 206127908 U CN206127908 U CN 206127908U CN 201621056506 U CN201621056506 U CN 201621056506U CN 206127908 U CN206127908 U CN 206127908U
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Abstract
The utility model discloses a sound barrier cell board based on broadband microperforated panel acoustic absorber belongs to ambient noise control technical field, including acoustic absorber and sound insulation backplate, acoustic absorber includes that the micropunch panel reaches not even depth cavity group, the sound insulation backplate includes backplate and two upper and lower side boards, and the sound insulation backplate left and right sides adopts seal head plate to seal, even depth cavity copy cast is not listed as on the backplate of sound insulation backplate, and even depth cavity group opening side is not to the micropunch panel. The utility model has the advantages of green, simple structure, intensity height and weatherability are strong, the coefficient of making an uproar that falls of this sound absorption cell board is not less than 0.8, concentrates frequency channel acoustic absorption performance superior at the highway noise energy: 125Hz are 2500Hz's 13 octave central frequency random incidence acoustic absorptivities all higher than 0.5, 160Hz 2000Hz's 13 octave central frequency random incidence acoustic absorptivity average values are 0.85, and weighted acoustical reduction coefficient rw reaches 31dB simultaneously.
Description
Technical field
This utility model belongs to environmental noise abatement technical field, and in particular to based on broadband porous plate acoustic adsorption device
Acoustic barrier unit board.
Background technology
Major urban arterial highway, highway and railway can produce substantial amounts of sound pollution, reduce quality of life the prestige of people
Side of body health.In road or railway both sides, the effective way that corresponding sound barrier is that block noise is propagated is set, it is actually used
Many acoustic barrier unit boards be to be made by chromatic steel sandwich plate, low cost and with certain structural strength and sound insulation property
Can, but do not possess sound absorption, when both sides of the road be arranged in parallel or use by the high density settling pond road, due between barrier
Or between barrier and elevation of building the interreflection of noise and significantly reduce masking by noise effect.For this problem, collection sound absorption,
The acoustic barrier unit board that sound insulation is integrated is developed, and CN103603277A discloses a kind of compound sound-screen used for high-speed railway
Barrier, primary structure include pedestal and panel, and the sound absorption chamber of indent, sound absorption intracavity filling rock wool, rotary glass are provided with the middle of pedestal
The sound-absorbing material such as cotton or polyester fiber acoustical cotton.CN205348018U discloses a kind of non-metal sound barrier cell board, including the back of the body
The upper and lower ends of panel and front plate, backplate and front plate are connected by tongue and groove, and one cavity layer of intermediate formation is filled out in cavity layer
Material is filled for one or more in glass cotton, rock wool, polyester fiber, perlite or haydite.The sound absorption adopted by above patent
Material belongs to traditional fiber or porous class sound-absorbing material, life-time service, particularly out of doors under adverse circumstances, easily efflorescence and
The moisture absorption is gone mouldy, and is also possible to pollute environment while sound absorbing capabilities decline to a great extent.
CN1332096C discloses a kind of double-face sound-absorbing contacting oral cavity sound shield without cotton, and mainly the aluminum fiber by both sides is thin
The collapsible dividing plate composition of plate, microperforated panel and centre, does not adopt the fibrous materials such as natural cotton, synthetic cotton, glass cotton, rock wool.
CN100523385C discloses a kind of gradual-change cavity microperforated, by micropunch panel and monolayer
The linear change of depth inclination back of the body chamber composition, although than even depth monolayer porous plate acoustic adsorption device sound sucting band compared with
Width, but it is relatively limited to lift effect.Reason is the sound sucting band width of the porous plate acoustic adsorption device adopted during these design
It is limited, it is individually used for the wide in range traffic noise of absorption actual spectrum and seems difficult.
Background above shows：Excellent and dustless, environmentally friendly, the moisture resistance acoustic barrier unit board of current sound absorbing capabilities also relatively lacks
It is weary；Broadband porous plate acoustic adsorption device is introduced wherein by with very big application potential.
Utility model content
Utility model purpose：The purpose of this utility model is to provide the sound barrier based on broadband porous plate acoustic adsorption device
Cell board, has the advantages that environmental protection, simple structure, intensity are high, and weatherability is strong.
Based on the acoustic barrier unit board of broadband porous plate acoustic adsorption device, including sound absorber and sound insulation backboard, sound absorber bag
Include micropunch panel and non-even depth cavity group；Described sound insulation backboard includes backplate and upper and lower two side panels, the sound insulation back of the body
Closed using head plate the plate left and right sides；Described not even depth cavity group is arranged on the backplate of sound insulation backboard,
Even depth cavity group open side is not passed through to micropunch panel, the not most deep cavity bottom of even depth cavity group with sound insulation backboard
Rivet interlacement, depth weak point are supplied using cushion block；Described not even depth cavity group includes multiple cycles, each week
Sub- number of cavities in phase is more than 2, and adjacent sub- cavity depth is unequal, and even depth cavity group is not arranged in parallel.
Described head plate is fixed on the sound insulation backboard left and right sides by way of rivet interlacement, is absorbed sound with closed protective
Body, described micropunch panel are covered in the not open side of even depth cavity group and are closely touched, and keep micropunch panel
Surfacing.
When described not even depth cavity group transverse horizontal is placed on sound insulation backboard, set up short on sound insulation backboard
Reinforcement and long reinforcement, described short reinforcement is vertical by way of rivet interlacement to be fixed on backplate, will be every
Sound backboard is uniformly divided into three sections of cavitys；Described long reinforcement is parallel by way of rivet interlacement to be fixed on side panel
On, the described short reinforcement and long reinforcement frame structure stable with sound insulation backboard composition.
The thickness of slab of described micropunch panel be 0.2～1.2mm, penetration hole diameter be 0.1～1.2mm, punching rate be 0.5～
10%.
When the penetration hole diameter of described micropunch panel is more than 0.5mm, in micropunch panel and non-even depth cavity group
Between set up non-woven fabrics, the smooth pressure of described non-woven fabrics is attached to the not open side of even depth cavity group and all covers, described
Micropunch panel is covered on non-woven fabrics, and is closely touched with the open side of not even depth cavity group, keeps micropunch panel
Surfacing；Described non-woven fabrics grammes per square metre is 10～50g/m2。
In a cycle, even depth cavity group is not coupled with micropunch panel, and is formed with number of cavities substantially etc.
The sound absorption peak of same multiple different frequencies, so as to effectively widen sound sucting band, periodically even depth cavity group does not shine such as lower section
Method is designed, wherein representing that the unit of size letter is mm：
Step 1：Determine the quantity of the width and signal period inner chamber body of cavity；Each housing width is 2～30mm, single
The quantity of cycle inner chamber body is more than 2；
Step 2：Determine the unit depth ratio of signal period not even depth cavity group；Arranged based on quadratic residue sequence combination
Row are theoretical, and each sub- cavity unit depth ratio each other is with arrangement mode by following formula calculating：
ln=mod (n2,N+1)
In formula, lnRepresent the unit depth ratio of n-th cavity, mod is MOD function, n takes 1,2 successively ..., and N, N are represented
The quantity of a cycle inner chamber body；
Step 3：According to the thickness limit value of acoustic barrier unit board, it is determined that not depth capacity D of even depth cavity group, then cavity
Unit depth d=D/ (the l of groupn)max。
When even depth cavity group transverse horizontal is not placed on sound insulation backboard, according to the height H of acoustic barrier unit board
It is determined that amount of cycles m of the not even depth cavity group on sound insulation backboard, is calculated as follows：
M=H/w
In formula, m clip decimal it is backward under round, represent the amount of cycles of not even depth cavity group, H represents sound barrier unit
The height of plate, w represent the width of signal period cavity group, determine the width b=(H-m*w)/2 of long reinforcement.
It is when even depth cavity group is not vertically disposed vertically on sound insulation backboard, true according to the width L of acoustic barrier unit board
Surely amount of cycles m of the not even depth cavity group on sound insulation backboard, is calculated as follows：
M=L/w
In formula, m clip decimal it is backward under round, represent the amount of cycles of not even depth cavity group, L represents sound barrier unit
The width of plate, w represent the width of signal period cavity group.
Utility model principle：Porous plate acoustic adsorption device can be made by metal or high strength plastics, and fibre-bearing or porous class are not inhaled
Sound material, is a kind of new environmentally friendly sound absorption structure.Based on the broadband porous plate acoustic adsorption device of periodicity cavity group, only by table
The sub- cavity composition that multiple depth are not mutually equal after face monolayer microperforated panel and plate, by microperforated panel and each not even depth chamber
Body greatly improves sound sucting band width in the locally coupled effect of different frequency, with high using value.
Beneficial effect：It is compared with the sound absorption cell board based on traditional fiber or sound-absorbing porous material, of the present utility model
Have based on the acoustic barrier unit board of broadband porous plate acoustic adsorption device that environmental protection, simple structure, intensity are high, and weatherability is strong
The advantages of；Of the present utility model another is beneficial in that the noise reduction coefficient of the sound absorption cell board is not less than 0.8, in traffic
Noise energy collection Mid Frequency sound absorbing capabilities are superior：The third-octave mid frequency random incidence acoustic absorptivity of 125Hz-2500Hz
Be above 0.5,160Hz-2000Hz third-octave mid frequency random incidence acoustic absorptivity meansigma methodss be 0.85, weighted every
Volume Rw reaches 31dB.
Description of the drawings
Fig. 1 is the overall structure diagram of sound barrier sound absorption cell board；
Fig. 2 is the sound insulation back board structure schematic diagram of sound barrier sound absorption cell board；
Fig. 3 is the micropunch panel construction schematic diagram of sound barrier sound absorption cell board；
Fig. 4 is the sound absorber structural representation of sound barrier sound absorption cell board signal period；
The reverberation chamber acoustic absorptivity test result of Fig. 5 sound barriers sound absorption cell board；
Fig. 6 is the weighted transmission loss test result of sound barrier sound absorption cell board.
Specific embodiment
Below in conjunction with the accompanying drawings and specific embodiment, further elucidate this utility model.
As Figure 1-4, reference is：Micropunch panel 1, non-woven fabrics 2, short reinforcement 3, not even depth cavity group 4,
Sound insulation backboard 5, long reinforcement 6, cushion block 7 and head plate 8.Wherein, Fig. 1 (a) is arranged in for not 4 transverse horizontal of even depth cavity group
Structural representation on micropunch panel 1, Fig. 1 (b) are vertical arranged vertically on micropunch panel 1 for not even depth cavity group 4
Structural representation.
Sound absorber and sound insulation backboard 5 are included based on the acoustic barrier unit board of broadband porous plate acoustic adsorption device, insulate against sound backboard 5
For metallic plate, such as galvanized steel plain sheet, its Main Function is to insulate against sound and protect and support unit plate；As shown in figure 4, sound absorber includes
Micropunch panel 1 and not even depth cavity group 4.
As shown in Fig. 2 sound insulation backboard 5 includes backplate 51 and upper and lower two side panels 52, and upper and lower two side panels 52
For the tongue and groove connecting structure that convex-concave is harmonious, 5 left and right sides of sound insulation backboard is closed using head plate 8.Not even depth cavity group 4
It is arranged on the backplate 51 of sound insulation backboard 5,4 open end of even depth cavity group is not to micropunch panel 1.Not even depth chamber
Body group 4 may include multiple cycles, and the sub- number of cavities in each cycle is more than 2, and adjacent sub- cavity depth is unequal, and townhouse
Row.
When 4 transverse horizontal of even depth cavity group is not placed on sound insulation backboard 5, short adding is set up on sound insulation backboard 5
Strong muscle 3 and long reinforcement 6, constitute stable frame structure.
The thickness of slab of micropunch panel 1 is 0.2～1.2mm, while certain surface intensity is provided can also meet high acoustic absorption
The demand of performance, the penetration hole diameter of micropunch panel 1 is 0.1～1.2mm, and punching rate is 0.5～10%, the arrangement mode of perforation
Can for rectangle, triangle or other.
When the penetration hole diameter of micropunch panel 1 is more than 0.5mm, in micropunch panel 1 and not between even depth cavity group 4
Non-woven fabrics 2 are set up, 2 grammes per square metre of non-woven fabrics is 10～50g/m2.When the penetration hole diameter of micropunch panel 1 is less than or equal to 0.5mm,
Non-woven fabrics 2 are not used.
Based on the method for designing of the acoustic barrier unit board of broadband porous plate acoustic adsorption device, comprise the steps：
Step 1) even depth cavity group 4 is placed on sound insulation backboard 5, the not most deep cavity of even depth cavity group 4
With sound insulation backboard 5 by rivet interlacement, depth weak point is supplied using cushion block 7 for bottom；
Step 2) head plate 8 is fixed on into acoustic barrier unit board both-side opening by way of rivet interlacement, to close guarantor
Micropunch panel 1 is covered in the not open side of even depth cavity group 4 and is closely touched, and keeps micropunch face by shield sound absorber
The surfacing of plate 1.
Wherein, step 1) in, when 4 transverse horizontal of even depth cavity group is not placed on sound insulation backboard 5, by short reinforcement
Muscle 3 is vertical by way of rivet interlacement to be fixed on backplate 51, and sound insulation backboard 5 is uniformly divided into three sections of cavitys；
Long reinforcement 6 is parallel by way of rivet interlacement to be fixed on side panel 52；Short reinforcement 3 and long reinforcement 6 and sound insulation
Backboard 5 constitutes stable frame structure, it is ensured that after structure has enough intensity, and the most deep cavity bottom of cavity group is carried on the back with sound insulation
Plate 5 is supplied using cushion block 7 by rivet interlacement, depth weak point.
Step 1) in, when not even depth cavity group 4 is vertically disposed vertically on sound insulation backboard 5, now cavity group from
Body structure can effectively undertake vertical load, and cell board has higher structural strength, therefore can not adopt 3 He of short reinforcement
Long reinforcement 6, the most deep cavity bottom of cavity group with sound insulation backboard 5 by rivet interlacement, entered using cushion block 7 by depth weak point
Row is supplied.
Step 2) in, when the penetration hole diameter of micropunch panel 1 is more than 0.5mm, in micropunch panel 1 and not even depth chamber
Non-woven fabrics 2 are set up between body group 4, the smooth pressure of non-woven fabrics 2 is attached to the not open side of even depth cavity group 4 and is all covered, so
Afterwards micropunch panel 1 is covered on non-woven fabrics 2, and is closely touched with the open side of not even depth cavity group 4, keep micro- wearing
The surfacing of hole face plate 1.
In a cycle, even depth cavity group 4 is not coupled with micropunch panel 1, and is formed basic with number of cavities
The sound absorption peak of multiple different frequencies of equivalent, so as to effectively widen sound sucting band, periodically not even depth cavity group 4 according to such as
Lower method is designed：
Step 1：Determine the quantity of the width and signal period inner chamber body of cavity；Each housing width is 2～30mm, single
The quantity of cycle inner chamber body is more than 2, preferably takes 6 or 10；
Step 2：Determine the unit depth ratio of signal period not even depth cavity group 4；Combined based on quadratic residue sequence
Arrangement theory, each sub- cavity unit depth ratio each other are calculated by following formula with arrangement mode：
ln=mod (n2,N+1)
In formula, lnRepresent the unit depth ratio of n-th cavity, mod is MOD function, n takes 1,2 successively ..., and N, N are represented
The quantity of a cycle inner chamber body；
Step 3：According to the thickness limit value of acoustic barrier unit board, it is determined that not depth capacity D of even depth cavity group 4, then chamber
Unit depth d=D/ (the l of body groupn)max；
Step 4：When 4 transverse horizontal of even depth cavity group is not placed on sound insulation backboard 5, according to acoustic barrier unit board
Height H determine sound insulation backboard on not even depth cavity group 4 amount of cycles m, can be calculated as follows：
M=H/w
In formula, m clip decimal it is backward under round, represent the amount of cycles of not even depth cavity group 4, H represents sound barrier list
The height of first plate, w represent the width of signal period cavity group, determine the width b=(H-m*w)/2 of long reinforcement, above letter
Unit is mm；
When even depth cavity group 4 is not vertically disposed vertically on sound insulation backboard 5, according to the width L of acoustic barrier unit board
It is determined that amount of cycles m of the not even depth cavity group 4 on sound insulation backboard, can be calculated as follows：
M=L/w
In formula, m clip decimal it is backward under round, represent the amount of cycles of not even depth cavity group 4, L represents sound barrier list
The width of first plate, w represent the width of signal period cavity group.
Embodiment 1
In the present embodiment, based on the acoustic barrier unit board of broadband porous plate acoustic adsorption device, will be even depth cavity group 4 horizontal
On to horizontal positioned to sound insulation backboard 5, the penetration hole diameter of micropunch panel 1 is 0.8mm, using non-woven fabrics 2.
Acoustic barrier unit board is highly 500mm, and width is 1960mm, and thickness is 115mm；Sound insulation backboard 5 adopt thickness for
The galvanized steel plain sheet of 0.5mm makes, and head plate 8 adopts thickness and makes for the galvanized steel plain sheet of 1.5mm, and both play sound insulation and protect internal
The effect of sound absorption structure.Micropunch panel 1 adopts thickness and processes for the aluminium alloy plate of 0.7mm, and penetration hole diameter is 0.8mm, perforation
Arrangement mode is rectangular arranged, and pitch of holes 5.5mm, punching rate are about 1.66%.
Wherein, short reinforcement 3 is two, and its length is 440mm.Long reinforcement 6 is two, and length is 1960mm.
Depth cavity group 4 has 6 sub- cavitys in signal period, and its depth is followed successively by 5mm, 20mm, 10mm, 50mm from top to bottom,
100mm, 25mm.Cavity body structure adopts environmentally-friendly plastic material, wall thickness 2.5mm, single sub- cavity clear span 15mm.Not even depth cavity
Group 4 signal period length be 614mm, width 107.5mm, depth 102.5mm.
Known units plate hight degree H is 500mm, when even depth cavity group is not transversely arranged, its periodicity m=500/
107.5=4 (clipping arithmetic point to round downwards), therefore the not even depth in 4 cycles arranged in parallel in every section of sound insulationg board cavity
Cavity group 4, three sections of sound insulationg board cavitys have the cavity group in 12 cycles.
Had with sound insulation property based on the sound absorbing capabilities of the acoustic barrier unit board of broadband porous plate acoustic adsorption device
The authoritative department of CMA certifications is detected.Sound absorbing capabilities testing result as shown in figure 5, its noise reduction coefficient is not less than 0.8, and
And showing as in traffic sound energy collection Mid Frequency：The third-octave mid frequency random incidence sound absorption of 125Hz-2500Hz
It is 0.85 that coefficient is above the third-octave mid frequency random incidence acoustic absorptivity meansigma methodss of 0.5,160Hz-2000Hz；Every
Acoustic performance testing result is as shown in fig. 6, weighted transmission loss reaches 31dB；Test result shows that sound barrier of the present utility model is inhaled
The superior performance in terms of traffic noise control and application of sound cell board and wide prospect.
Claims (5)
1. the acoustic barrier unit board based on broadband porous plate acoustic adsorption device, it is characterised in that：Including sound absorber and sound insulation backboard
(5), sound absorber includes micropunch panel (1) and not even depth cavity group (4)；Described sound insulation backboard (5) is including backplate
(51) and upper and lower two side panels (52), sound insulation backboard (5) left and right sides is closed using head plate (8)；Described
Depth cavity group (4) is arranged on the backplate (51) of sound insulation backboard (5), and even depth cavity group (4) open side is not to micro-
Perforated panel (1), with sound insulation backboard (5) by rivet interlacement, depth is not enough for the most deep cavity bottom of even depth cavity group (4)
Part is supplied using cushion block (7)；Described not even depth cavity group (4) includes multiple cycles, the sub- chamber in each cycle
Body quantity is more than 2, and adjacent sub- cavity depth is unequal, and even depth cavity group (4) is not arranged in parallel.
2. the acoustic barrier unit board based on broadband porous plate acoustic adsorption device according to claim 1, it is characterised in that：Institute
The head plate (8) stated is fixed on sound insulation backboard (5) left and right sides by way of rivet interlacement, with closed protective sound absorber, institute
The micropunch panel (1) stated is covered in the not open side of even depth cavity group (4) and is closely touched, and keeps micropunch panel
(1) surfacing.
3. the acoustic barrier unit board based on broadband porous plate acoustic adsorption device according to claim 1, it is characterised in that：When
When described not even depth cavity group (4) transverse horizontal is placed on sound insulation backboard (5), set up short in sound insulation backboard (5)
Reinforcement (3) and long reinforcement (6), described short reinforcement (3) is vertical by way of rivet interlacement to be fixed on backplate
(51), on, sound insulation backboard (5) is uniformly divided into into three sections of cavitys；Described long reinforcement (6) is by way of rivet interlacement
Parallel is fixed on side panel (52), and described short reinforcement (3) and long reinforcement (6) are stable with sound insulation backboard (5) composition
Frame structure.
4. the acoustic barrier unit board based on broadband porous plate acoustic adsorption device according to claim 1, it is characterised in that：Institute
The thickness of slab of the micropunch panel (1) stated is 0.2～1.2mm, and penetration hole diameter is 0.1～1.2mm, and punching rate is 0.5～10%.
5. the acoustic barrier unit board based on broadband porous plate acoustic adsorption device according to claim 4, it is characterised in that：When
The penetration hole diameter of described micropunch panel (1) be more than 0.5mm when, micropunch panel (1) and not even depth cavity group (4) it
Between set up non-woven fabrics (2), the smooth pressure of described non-woven fabrics (2) is attached to the not open side of even depth cavity group (4) and all covers,
Described micropunch panel (1) is covered on non-woven fabrics (2), and is closely touched with the open side of not even depth cavity group (4),
Keep the surfacing of micropunch panel (1)；Described non-woven fabrics (2) grammes per square metre is 10～50g/m2。
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| Application Number | Priority Date | Filing Date | Title |
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| CN201621056506.5U CN206127908U (en) | 2016-09-14 | 2016-09-14 | Sound barrier cell board based on broadband microperforated panel acoustic absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621056506.5U CN206127908U (en) | 2016-09-14 | 2016-09-14 | Sound barrier cell board based on broadband microperforated panel acoustic absorber |
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| CN206127908U true CN206127908U (en) | 2017-04-26 |
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ID=58569247
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| Application Number | Title | Priority Date | Filing Date |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106223222A (en) * | 2016-09-14 | 2016-12-14 | 东南大学 | Acoustic barrier unit board based on broadband porous plate acoustic adsorption device and method for designing thereof |
| CN107842120A (en) * | 2017-11-30 | 2018-03-27 | 江苏标榜装饰新材料股份有限公司 | A kind of sound arrester |
| CN109487714A (en) * | 2018-09-28 | 2019-03-19 | 江苏新光环保工程有限公司 | A kind of full frequency band sqouynd absorption lowering noise plate and preparation method thereof |
| RU2763419C1 (en) * | 2021-04-20 | 2021-12-29 | Акционерное Общество "Казанский Гипронииавиапром" имени Б.И. Тихомирова | Acoustic sandwich panel |
-
2016
- 2016-09-14 CN CN201621056506.5U patent/CN206127908U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106223222A (en) * | 2016-09-14 | 2016-12-14 | 东南大学 | Acoustic barrier unit board based on broadband porous plate acoustic adsorption device and method for designing thereof |
| CN107842120A (en) * | 2017-11-30 | 2018-03-27 | 江苏标榜装饰新材料股份有限公司 | A kind of sound arrester |
| CN109487714A (en) * | 2018-09-28 | 2019-03-19 | 江苏新光环保工程有限公司 | A kind of full frequency band sqouynd absorption lowering noise plate and preparation method thereof |
| CN109487714B (en) * | 2018-09-28 | 2021-04-30 | 江苏新光环保工程有限公司 | Full-band sound absorption and noise reduction plate and preparation method thereof |
| RU2763419C1 (en) * | 2021-04-20 | 2021-12-29 | Акционерное Общество "Казанский Гипронииавиапром" имени Б.И. Тихомирова | Acoustic sandwich panel |
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