CN206134247U - Novel compound acoustic baffle of foamed aluminium - Google Patents
Novel compound acoustic baffle of foamed aluminium Download PDFInfo
- Publication number
- CN206134247U CN206134247U CN201621106691.4U CN201621106691U CN206134247U CN 206134247 U CN206134247 U CN 206134247U CN 201621106691 U CN201621106691 U CN 201621106691U CN 206134247 U CN206134247 U CN 206134247U
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- support plate
- plate
- board
- galvanized steel
- sound
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Abstract
The utility model discloses a novel compound acoustic baffle of foamed aluminium relates to sound absorbing material technical field, the utility model discloses a foamed aluminum plate and galvanized steel sheet, foamed aluminum plate and galvanized steel sheet are the square board of justified margin, are provided with left support plate and right branch fagging between foamed aluminum plate and the galvanized steel sheet, left support plate, right branch fagging, foamed aluminum plate and galvanized steel hoarding become the cavity, constitute the air bed, be provided with the baffle in the cavity, the baffle includes a plurality of end to end's the unit of bending, foamed aluminum plate on be provided with a plurality of apertures, the utility model has the advantages of simple structure, attract effectually, humid environment is to not influence of absorbing effect, the air bed of different thickness, and the sound absorption master frequency is different.
Description
Technical field
The utility model is related to abatvoix technical field, more particularly to a kind of novel foam aluminium sound-absorbing composite board.
Background technology
Sound-absorbing material will be matched with the acoustic characteristic impedance of the sound bearing medium of surrounding, enter sound absorption material with making acoustic energy areflexia
Material, and absorbed the incident acoustic energy overwhelming majority.
Foamed aluminium is in pure aluminum or aluminum alloy, under aluminium liquid molten state additive to be added, and is made through foam process
Form, have metal and bubble feature concurrently, be a kind of new porous metal material.Foamed aluminium has little density, light weight, high suction
Receive impact capacity strong, high temperature resistant, sound insulation and noise reduction, the features such as fire protecting performance is strong, anticorrosive, anti-electromagnetic-radiation ability is strong, foamed aluminium
Characteristic determine that foamed aluminium board can be used as a kind of sound-absorbing material.
In wet condition, common sound-absorbing material absorbs and expanded after moisture, and acoustic absorptivity is substantially reduced, and foamed aluminium material
Moisture is not absorbed, so the absorptivity of foamed aluminium board is not reduced in wet environment, current foamed aluminium board is existing being in daily use
Sound-absorbing material, but existing foamed aluminium board is present, and structure is single, acoustically effective is poor, and noise frequency difference is difficult to.
The content of the invention
The purpose of this utility model is：Solve existing foamed aluminium board and there is the skill that structure is single and acoustically effective is limited
A kind of art problem, there is provided novel foam aluminium sound-absorbing composite board.
The utility model is specifically employed the following technical solutions to achieve these goals：
A kind of novel foam aluminium sound-absorbing composite board, including foamed aluminium board and galvanized steel plain sheet, foamed aluminium board and galvanized steel plain sheet are
The square plate of justified margin, is provided with left support plate and right support plate, described left support between foamed aluminium board and galvanized steel plain sheet
Plate, right support plate, foamed aluminium board and galvanized steel plain sheet surround cavity, constitute air layer, and dividing plate is provided with cavity, and dividing plate includes many
Individual end to end bending unit, is provided with some apertures on described foamed aluminium board.
Further, bending unit includes left swash plate, bottom horizontal plate, Right deviation swash plate and the top horizontal being sequentially connected
Plate, left swash plate, bottom horizontal plate and Right deviation swash plate constitute the isosceles trapezoid groove of opening upwards, bottom horizontal plate and top water flat board
Cross-sectional width it is identical, bottom horizontal plate is fixedly connected with foamed aluminium board, and top water flat board is fixedly connected with galvanized steel plain sheet.
Further, the material of bending unit is galvanized steel plain sheet.
Further, described left support plate and right support plate are symmetricly set between foamed aluminium board and galvanized steel plain sheet, left
The cross section of gripper shoe and right support plate is relative for the U-type groove opening for being U-type groove structure, left support plate and right support plate.
Further, left support plate and right support plate are corrosion resistant plate, and left support plate and right support plate are respectively by each
The rivet planted is fixed between foamed aluminium board and galvanized steel plain sheet.
Further, a diameter of 2mm of the aperture 1-1 on foamed aluminium board, the punching rate of foamed aluminium board is 1%～3%.
Further, basalt sound absorption cotton felt can be filled in cavity 6.
The beneficial effects of the utility model are as follows：
1st, some apertures are provided with foamed aluminium board surface irregularity, foamed aluminium board, are inhaled with excellent surface diffusing reflection
Sound function, while and with perforation helmholtz resonance sound absorber sound absorption function, it is ensured that with compared with high acoustic absorption rate, composite sound absorbing
Plate is made up of foamed aluminium board, air layer and galvanized steel plain sheet, the air layer of different-thickness, and sound absorption basic frequency is different, with air layer
Thickness increases to 90mm by 0mm, and sound absorption basic frequency is reduced to 300Hz or so by 2000Hz.
2nd, in wet condition common sound-absorbing material absorbs expansion after moisture, and acoustic absorptivity is substantially reduced, and foamed aluminum materials
Material does not absorb moisture, and its absorptivity will not be reduced, and wet environment does not affect on foamed aluminium board sound-absorbing effect.
3rd, dividing plate includes continuous multiple bending units, the dividing plate of continuous bending structure, formed between the upper and lower every dovetail groove,
On the one hand this structure is easy to membrane support foamed aluminium board and galvanized steel plain sheet, another convenient surface area for increasing dividing plate, so as to increase
Plus sound-absorbing effect.
Description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the structural representation of bending unit；
Fig. 3 is the structural representation of foamed aluminium board；
Reference：1- foamed aluminium boards, 1-1- apertures, 2- right support plates, 3- galvanized steel plain sheets, 4- dividing plates, 4-1- bending lists
Unit, the left swash plates of 4-1.1-, 4-1.2- bottom horizontal plates, 4-1.3- Right deviation swash plates, 4-1.4- top water flat boards, 5- left support plates,
6- cavitys.
Specific embodiment
In order to those skilled in the art are better understood from the utility model, below in conjunction with the accompanying drawings with following examples to this
Utility model is described in further detail.
Embodiment 1
As shown in Fig. 1 to 3, the present embodiment provides a kind of novel foam aluminium sound-absorbing composite board, including foamed aluminium board 1 and zinc-plated
Steel plate 3, is provided with some aperture 1-1 on described foamed aluminium board 1, between foamed aluminium board 1 and galvanized steel plain sheet 3 left support is provided with
Plate 5 and right support plate 2, described left support plate 5, right support plate 2, foamed aluminium board 1 and galvanized steel plain sheet 3 surround cavity 6, cavity 6
Dividing plate 4 is inside provided with, dividing plate 4 includes multiple end to end bending unit 4-1.
In the present embodiment, foamed aluminium board makes efficient acoustic board after punching process, and wherein hole diameter is Φ 2mm,
Punching rate 1～3%, with excellent sound absorbing capabilities, absorptivity can reach 60%～90%.Due to foamed aluminium board uneven surface
It is whole, with excellent surface diffusing reflection sound absorption function, while and with the helmholtz resonance sound absorber sound absorption function of perforation, guarantor
Card has compared with high acoustic absorption rate.Additionally, in wet condition common sound-absorbing material absorbs expansion after moisture, acoustic absorptivity drops significantly
It is low, and foamed aluminium material does not absorb moisture, its absorptivity will not be reduced, and wet environment does not have shadow to foamed aluminium board sound-absorbing effect
Ring.
Cavity 6 constitutes the air layer between foam aluminium sheet 1 and galvanized steel plain sheet 3, and foamed aluminium board arranges behind the sky of different-thickness
Gas-bearing formation, sound absorption basic frequency is different, and as air layer thickness increases to 90mm by 0mm, sound absorption basic frequency is reduced to by 2000Hz
300Hz or so.When air layer thickness be 10,30,60,90mm when, the basic frequency of maximum absorptivity be respectively 1000Hz, 500Hz,
400Hz, 300Hz or so.According to noise frequency distribution design foam rate acoustic board back air space thickness.Highway, subfluvial tunnel,
The main band of noise that the automobiles such as seabed tunnel are produced, in 400Hz or so, is low-frequency noise, therefore road sound barrier, river bed and sea
The Foamed aluminum sound absorbing plate of bottom tunnel sound absorption wall arranges behind the thick air layers of 60mm, excellent noise reduction effect.The noise of railway is
The high-frequency noises of more than 1000Hz, Foamed aluminum sound absorbing plate arranges behind 20mm thickness air layers, excellent noise reduction effect.
Embodiment 2
The present embodiment is further optimized on the basis of embodiment 1, specifically：
Bending unit 4-1 include be sequentially connected left swash plate 4-1.1, bottom horizontal plate 4-1.2, Right deviation swash plate 4-1.3 and
Top water flat board 4-1.4, left swash plate 4-1.1, bottom horizontal plate 4-1.2, the isosceles ladder of Right deviation swash plate 4-1.3 composition opening upwards
Shape groove, bottom horizontal plate 4-1.2 is identical with the cross-sectional width of top water flat board 4-1.4, bottom horizontal plate 4-1.2 and foamed aluminium
Plate 1 is fixedly connected, and top water flat board 4-1.4 is fixedly connected with galvanized steel plain sheet 3.
The material of bending unit 4-1 is galvanized steel plain sheet, and the great advantage of Coated Steel Sheet is excellent corrosion resistance, japanning
Property, ornamental and good formability.
In this enforcement, dividing plate 4 includes continuous multiple bending unit 4-1, and the dividing plate of continuous bending structure is formed between the upper and lower
Every dovetail groove, on the one hand this structure be easy to membrane support foamed aluminium board 1 and galvanized steel plain sheet 3, another convenient dividing plate 4 that increases
Surface area, so as to increase sound-absorbing effect.
Embodiment 3
The present embodiment is further optimized on the basis of embodiment 1 or 2, specifically：
Described left support plate 5 and right support plate 2 is symmetricly set between foamed aluminium board 1 and galvanized steel plain sheet 3, left support plate
5 and right support plate 2 cross section be U-type groove structure, left support plate 5 and right support plate 2 U-type groove opening it is relative.
Left support plate 5 and right support plate 2 are corrosion resistant plate, and left support plate 5 and right support plate 2 are respectively by various rivetings
Nail is fixed between foamed aluminium board 1 and galvanized steel plain sheet 3.
Basalt sound absorption cotton felt can be filled in cavity 6, attraction effect is further enhanced.
The above, preferred embodiment only of the present utility model, not to limit the utility model, the utility model
Scope of patent protection be defined by claims, every equivalent made with specification of the present utility model and accompanying drawing content
Structure change, should be included in the same manner in protection domain of the present utility model.
Claims (7)
1. a kind of novel foam aluminium sound-absorbing composite board, including foamed aluminium board (1) and galvanized steel plain sheet (3), it is characterised in that described
Some apertures (1-1) are provided with foamed aluminium board (1), between foamed aluminium board (1) and galvanized steel plain sheet (3) left support plate is provided with
(5) and right support plate (2), described left support plate (5), right support plate (2), foamed aluminium board (1) and galvanized steel plain sheet (3) surround sky
Dividing plate (4) is provided with chamber (6), cavity (6), dividing plate (4) includes multiple end to end bending units (4-1).
2. novel foam aluminium sound-absorbing composite board according to claim 1, it is characterised in that bending unit (4-1) include according to
The left swash plate (4-1.1) of secondary connection, bottom horizontal plate (4-1.2), Right deviation swash plate (4-1.3) and top water flat board (4-1.4), it is left
Swash plate (4-1.1), bottom horizontal plate (4-1.2), Right deviation swash plate (4-1.3) constitute the isosceles trapezoid groove of opening upwards, bottom water
Flat board (4-1.2) is identical with the cross-sectional width of top water flat board (4-1.4), bottom horizontal plate (4-1.2) and foamed aluminium board (1)
It is fixedly connected, top water flat board (4-1.4) is fixedly connected with galvanized steel plain sheet (3).
3. novel foam aluminium sound-absorbing composite board according to claim 1, it is characterised in that the material of bending unit (4-1)
For galvanized steel plain sheet.
4. novel foam aluminium sound-absorbing composite board according to claim 1, it is characterised in that described left support plate (5) and
Right support plate (2) is symmetricly set between foamed aluminium board (1) and galvanized steel plain sheet (3), left support plate (5) and right support plate (2)
Cross section is relative for the U-type groove opening for being U-type groove structure, left support plate (5) and right support plate (2).
5. novel foam aluminium sound-absorbing composite board according to claim 3, it is characterised in that left support plate (5) and right support
Plate (2) is corrosion resistant plate, and left support plate (5) and right support plate (2) are fixed on foamed aluminium board (1) by various rivets respectively
And galvanized steel plain sheet (3) between.
6. novel foam aluminium sound-absorbing composite board according to claim 1, it is characterised in that aperture (1-1) it is a diameter of
2mm, the punching rate of foamed aluminium board (1) is 1%～3%.
7. novel foam aluminium sound-absorbing composite board according to claim 1, it is characterised in that the Black Warrior can be filled in cavity (6)
Rock sound absorption cotton felt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621106691.4U CN206134247U (en) | 2016-10-09 | 2016-10-09 | Novel compound acoustic baffle of foamed aluminium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621106691.4U CN206134247U (en) | 2016-10-09 | 2016-10-09 | Novel compound acoustic baffle of foamed aluminium |
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| Publication Number | Publication Date |
|---|---|
| CN206134247U true CN206134247U (en) | 2017-04-26 |
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ID=58572782
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621106691.4U Active CN206134247U (en) | 2016-10-09 | 2016-10-09 | Novel compound acoustic baffle of foamed aluminium |
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| CN (1) | CN206134247U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106251853A (en) * | 2016-10-09 | 2016-12-21 | 四川中车复合材料结构有限公司 | A kind of novel foam aluminum sound-absorbing composite board |
| CN108922510A (en) * | 2018-07-18 | 2018-11-30 | 重庆大学 | The sound-absorbing porous material mixing sound absorption structure in parallel with resonant structure |
-
2016
- 2016-10-09 CN CN201621106691.4U patent/CN206134247U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106251853A (en) * | 2016-10-09 | 2016-12-21 | 四川中车复合材料结构有限公司 | A kind of novel foam aluminum sound-absorbing composite board |
| CN108922510A (en) * | 2018-07-18 | 2018-11-30 | 重庆大学 | The sound-absorbing porous material mixing sound absorption structure in parallel with resonant structure |
| CN108922510B (en) * | 2018-07-18 | 2023-08-15 | 重庆大学 | Mixed sound absorption structure with porous sound absorption material and resonance structure connected in parallel |
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