CN220868012U - Light composite acoustic super-structure barrier sound absorption board - Google Patents
Light composite acoustic super-structure barrier sound absorption board Download PDFInfo
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- CN220868012U CN220868012U CN202322639419.9U CN202322639419U CN220868012U CN 220868012 U CN220868012 U CN 220868012U CN 202322639419 U CN202322639419 U CN 202322639419U CN 220868012 U CN220868012 U CN 220868012U
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Abstract
The utility model relates to a light composite acoustic super-structure barrier sound-absorbing plate, which comprises a screen body shell and a super-structure composite sound-absorbing member inserted into the screen body shell; the super-structure composite sound-absorbing component comprises an acoustic super-structure material plate (4) and a traditional sound-absorbing material plate (5); the acoustic super-structure material plate (4) is arranged at one side of the screen body shell, which is far away from the sound source; the sound source is characterized in that an ultrasonic sound absorption hole (4 e) is formed in the plate surface of the acoustic ultrasonic material plate (4) facing the sound source. Compared with the prior art, the light composite acoustic super-structure barrier sound absorption board has the advantages that the acoustic super-structure material board provided with the super-structure sound absorption cavity is used for replacing heavy layer materials such as cement boards and gypsum boards in the screen body, and the light composite acoustic super-structure barrier sound absorption board is light in weight design on the basis of widening the noise reduction frequency band of the sound barrier.
Description
Technical Field
The utility model relates to a sound absorption member, in particular to a light composite acoustic super-structure barrier sound absorption board.
Background
Along with the continuous increase of the road coverage rate and the traffic flow of the rail transit in China, traffic noise pollution has serious influence on residents along the line. At present, sound barriers are arranged on two sides of a track and a highway to improve noise generated by track traffic. The noise reduction principle of the sound barrier is to set a material plate or wall with enough surface density between the sound source and the sound receiving point, so as to attenuate the sound wave in an absorption and blocking mode. Sound barriers have been developed in recent 30 years to have various forms, and can be classified into concrete type, wood type, composite material type, metal plate type (such as perforated plate, microperforated plate, composite color steel plate, etc.) according to the material of the screen body.
At present, most of sound barriers are impedance composite type, the screen body is generally composed of a perforated plate, sound absorption materials and a sound insulation backboard, and the sound insulation backboard is generally made of high-density heavy layer materials. As the diffraction effect of middle-low frequency noise is stronger, the attenuation effect of the existing sound barrier on the frequency band noise is poor.
Disclosure of utility model
The utility model aims to overcome at least one of the defects in the prior art and provide the light composite acoustic super-structure barrier sound absorbing board, and the noise reduction frequency band and the light design of the sound barrier are widened by replacing heavy layer materials such as cement boards, gypsum boards and the like in the screen body. The utility model not only meets the new requirements of broadband noise reduction and light weight design of the sound barrier, but also has the advantages of convenient assembly and universality, can be packaged in most of the existing sound barrier screens, and has wide application prospect.
The propagation of sound waves is regulated and controlled by the acoustic super-structure material through artificial structural design, so that abnormal refraction and reflection, acoustic holography, multi-cavity perfect sound absorbers and the like are realized, and the possibility is provided for the rapid development of the acoustic super-structure material for the low-frequency noise reduction performance of the sound barrier. Based on energy consumption mechanisms such as weak coupling and local resonance and impedance matching principles, a designer combines and matches the traditional porous acoustic material with the multi-cavity acoustic super-structure material, and can realize the low-frequency broadband sound absorption effect.
The aim of the utility model can be achieved by the following technical scheme:
a light composite acoustic super-structure barrier sound-absorbing board comprises a screen body shell and a super-structure composite sound-absorbing member inserted into the screen body shell;
The super-structure composite sound absorption component comprises an acoustic super-structure material plate and a traditional sound absorption material plate; the acoustic super-structure material plate is arranged at one side of the screen body shell, which is far away from the sound source; and the plate surface of the acoustic super-structure material plate, facing the sound source, is provided with super-structure sound absorption holes.
In particular, the super-structure composite sound-absorbing member is designed by composite matching of an acoustic super-structure material plate and a traditional sound-absorbing material, and the distance between the acoustic super-structure material plate and the traditional sound-absorbing material plate is more than or equal to 0. That is, during assembly, the conventional sound absorbing material may be applied to the surface of the acoustic metamaterial plate, and a cavity layer with a certain thickness may be left between the conventional sound absorbing material and the acoustic metamaterial plate.
In one embodiment of the utility model, the screen shell comprises a sound insulation back plate and a perforated panel which are arranged in parallel, and a side wall plate for connecting the two; and limit keels for fixing the super-structure composite sound absorption members are also arranged at two ends of the screen body shell. Specifically, the limiting keels are symmetrically fixed at the upper end and the lower end in the screen body, are not limited to welding, riveting, bolting and the like, or are fixed at the upper side and the lower side of the super-structure composite sound absorption member. The width of the limiting keel is equal to the thickness of the inner cavity of the screen body, and the length of the limiting keel is equal to the length of the inner cavity of the screen body; the width of the limiting slot is equal to the thickness of the super-structure composite sound absorption member, and the height of the limiting slot is not more than 20mm. The super-structure composite sound absorption member is designed by composite matching of an acoustic super-structure material plate and a traditional sound absorption material and is arranged in an upper limit keel slot and a lower limit keel slot in a drawing and inserting mode; or the limit keels and the super-structure composite sound absorption members form an assembly body in advance, and the assembly body is integrally installed.
Preferably, the length and width of the acoustic super-structure material plate are consistent with the length and width of the sound insulation backboard of the single screen body, the acoustic super-structure material plate is assembled in the screen body in a matched mode, and the thickness of the acoustic super-structure material plate is the same as the width of the limiting keel slot.
Preferably, the acoustic super-structure material plate is made of a fireproof anti-corrosion metal sheet material, such as aluminum, aluminum alloy sheet and the like, and the thickness of the sheet is less than 1mm.
In one embodiment of the utility model, a gauze is provided between the conventional sound absorbing material panel and the perforated panel.
In one embodiment of the utility model, the thickness of the gauze is less than 0.5mm.
In one embodiment of the present utility model, the conventional sound absorbing material panel is a glass wool panel having the same length and width dimensions as the acoustic metamaterial panel.
In one embodiment of the utility model, the acoustic ultra-structure material plate for the ultra-structure sound barrier is made of a fire-resistant anti-corrosion metal sheet material, such as aluminum, aluminum alloy sheet and the like, and the thickness of the sheet is less than 1mm.
In one embodiment of the utility model, the acoustic super-structure material plate is formed by splicing acoustic super-structure units with various structural parameter cavity types. Specifically, the acoustic super-structure material plate is formed by splicing acoustic super-structure units with various structural parameters in a serial and/or parallel mode to form a large-size assembly body, the large-size assembly body is assembled on one side of a sound insulation back plate in a screen body, and super-structure sound absorption holes on the surface of the large-size assembly body face the perforated panel side and are used for absorbing radiation noise from a track or a road surface.
Preferably, the structural parameters of the acoustic super-structure units are different, the track or road surface radiation noise frequency is used as a target noise reduction frequency band, a functional primitive model is designed, and the multi-parameter super-structure sound absorption cavity resonance acoustic super-structure unit configuration is designed through sequential structure.
In one embodiment of the utility model, the thickness of each acoustic superstructure unit in the sheet of acoustic superstructure material is not exactly the same. That is, when the thickness of the assembly space of the super-structured composite sound absorbing member is specified, the thickness of each acoustic super-structured unit constituting the acoustic super-structured material plate may be different, and the conventional sound absorbing material layer covering the surface thereof may be uneven therewith, and both the acoustic super-structured unit and the conventional sound absorbing material layer constitute a nested assembly.
In one embodiment of the utility model, the acoustic super-structure unit comprises a super-structure sound insulation backboard, a super-structure panel, a super-structure partition board and a super-structure sound absorption cavity; the super-structure sound absorption holes are formed in the surface of the super-structure panel. Specifically, the cavity type acoustic super-structure unit is formed by designing functional basic sequences of super-structure sound absorption cavities with various mesoscale, and the acoustic super-structure unit comprises a super-structure sound insulation backboard, a super-structure panel, a super-structure partition board, a super-structure sound absorption cavity and super-structure sound absorption holes on the surfaces of the super-structure panel.
In one embodiment of the present utility model, the cross section of the super-structure sound absorption hole is circular or polygonal. Specifically, the sound absorption holes on the surface of the acoustic super-structure unit are positioned at the lower end of the corresponding super-structure sound absorption cavity, so that self-drainage is facilitated.
Preferably, the cross section of the ultrasonic sound absorption cavity is square or rectangular, the cavity is distributed as simply as possible, and the ultrasonic sound absorption cavity is easy to form and prepare.
In one embodiment of the utility model, the ultra-structure sound absorption cavities of the ultra-structure sound absorption unit are orderly divided by ultra-structure partition plates and distributed in the acoustic ultra-structure material plates in a serial and/or parallel combination mode.
Compared with the prior art, the utility model has the following advantages:
(1) According to the light composite acoustic super-structure barrier sound absorption board, the acoustic super-structure material board provided with the super-structure sound absorption cavity is used for replacing heavy layer materials such as a cement board, a gypsum board and the like in the screen body, and the light design is realized on the basis of widening the noise reduction frequency band of the sound barrier.
(2) The utility model not only meets the new requirements of broadband noise reduction and light weight design of the sound barrier, but also has the advantages of convenient assembly and universality, can be packaged in most of the existing sound barrier screens, and has wide application prospect.
Drawings
FIG. 1 is a perspective assembly view of a light composite acoustic superconstructed barrier acoustic panel according to an embodiment;
FIG. 2 is a front view of a light composite acoustic superconstructed barrier acoustic panel according to an embodiment;
FIG. 3 is a schematic diagram of a first acoustic super-structure unit structure according to an embodiment;
FIG. 4 is an assembled schematic view of an ultra-constructed composite sound absorbing member in an embodiment;
FIG. 5 is a schematic diagram of a second acoustic super-structure unit in an embodiment;
The reference numerals in the figures indicate: 1-a sound insulation backboard; 2-perforating a panel; 3-limiting keels; 3 a-upper limit keels; 3 b-lower limit keels; 4-an acoustic metamaterial plate; 4 a-a super-structure sound insulation backboard; 4 b-super-construct panel; 4 c-super structure separator; 4 d-an ultrasonic sound absorption cavity; 4 e-super-constructed sound absorption holes; 5-a conventional panel of sound absorbing material; 6-gauze; 7-side wall panels.
Detailed Description
The utility model will now be described in detail with reference to the drawings and specific examples. The present embodiment is implemented on the premise of the technical scheme of the present utility model, and a detailed implementation manner and a specific operation process are provided, but the protection scope of the present utility model is not limited to the following embodiments.
Examples
Referring to fig. 1-5 in detail, the present embodiment provides a light composite acoustic super-structure barrier sound absorbing board, which includes a screen shell and a super-structure composite sound absorbing member, wherein the screen shell includes a sound insulation backboard 1, a perforated panel 2, a limit keel 3 and a side wall plate 7; the super-structure composite sound absorbing member comprises an acoustic super-structure material plate 4 and a traditional sound absorbing material 5.
Referring to fig. 1 in detail, the screen body shell is of a metal plate type and comprises a sound insulation backboard 1, a perforated panel 2 and a side wall plate 7, wherein the panel 2 is a perforated plate, a microperforated plate or a composite color steel plate; the assembly mode of the screen body shell is that the sound insulation backboard 1 and the punching panel 2 are buckled and assembled on the side wall plate 7 and are fixed by bolts, the limit keels 3 are symmetrically fixed at the upper end and the lower end of the inside of the screen body, and the upper end and the lower end of the inside of the screen body can be fixed by welding, riveting and bolting.
Referring to fig. 1 in detail, the width of the limit keel 3 is equal to the thickness of the inner cavity of the single screen body, and the length of the limit keel is equal to the length of the inner cavity of the single screen body; the width of the limiting slot is equal to the thickness of the super-structure composite sound absorption member, and the height of the limiting slot is not more than 20mm.
Referring to fig. 1 and 2 in detail, the super-structure composite sound absorbing member is formed by designing an acoustic super-structure material plate 4 and a traditional sound absorbing material 5 in a composite matching manner, and is installed in slots of an upper limit keel 3a and a lower limit keel 3b in a drawing and inserting mode.
Referring to fig. 4 in detail, another assembly method of the super-structure composite sound absorbing member provided in this embodiment is: the limiting keels 3 are fixed at the upper end and the lower end of the super-structure composite sound absorption member in advance, the limiting keels 3 and the super-structure composite sound absorption member form an assembly body, and then the integrated acoustic super-structure material plate 4, the traditional sound absorption material 5 and the limiting keels 3 are installed in the screen body.
Referring to fig. 1 and 2 in detail, the length and width of the acoustic super-structure material plate 4 are consistent with the length and width of the sound insulation backboard 1 of the single screen body, and the thickness of the acoustic super-structure material plate is the same as the width of the slot of the limit keel 3.
In this embodiment, the acoustic super-structure material plate 4 is made of a fireproof and anti-corrosion metal sheet material, such as aluminum, aluminum alloy sheet and the like, and the thickness of the sheet is less than 1mm.
Referring to fig. 1 in detail, the acoustic super-structure material plate 4 is formed by serially splicing cavity acoustic super-structure units with various structural parameters to form a large-size assembly body, and the large-size assembly body is assembled inside each section of screen body, and is adjacent to one side of the sound insulation backboard 1, and super-structure sound absorption holes 4e on the surface of the large-size assembly body face one side of the screen body panel 2 for absorbing radiation noise from a track or a road surface.
In this embodiment, the thickness of the super-structure sound insulation back plate 4a of the acoustic super-structure unit forming the acoustic super-structure material plate 4 is 2-5mm, so as to improve the sound insulation performance in the middle-high frequency band range.
Referring to fig. 3, the acoustic super-structure unit is designed by functional basic elements of sound absorption cavities with various mesoscale, and comprises a super-structure sound insulation back plate 4a, a super-structure panel 4b, a super-structure partition plate 4c, a super-structure sound absorption cavity 4d and a super-structure sound absorption hole 4e on the surface of the super-structure panel.
In this embodiment, the structural parameters of the acoustic super-structure units are different, in this embodiment, the track or road surface radiation noise frequency is used as the target noise reduction frequency band, a functional primitive model is designed, and the acoustic super-structure unit configuration of the multi-parameter sound absorption cavity is sequentially designed, so as to widen the noise reduction frequency band of the acoustic super-structure material plate 4. In this embodiment, two kinds of acoustic super-structure units are designed, and specific structures are shown in fig. 3 and 5.
Referring to fig. 3 and 5 in detail, the sound absorbing hole 4e on the surface of the acoustic super-structure unit is located at the lower end of the corresponding super-structure sound absorbing cavity 4d, so as to facilitate self-drainage, and the cross section of the super-structure sound absorbing hole 4e can be designed to be round, square or polygonal.
In this embodiment, the section of the sound absorption hole 4e is square, which has the advantage that two sides of the square section can be co-bordered with two sides of the square super-structure sound absorption cavity 4d, that is, the square super-structure sound absorption hole 4e is co-bordered with two wall surfaces of the square super-structure sound absorption cavity 4d, so that two wall surfaces of the super-structure sound absorption hole 4e are saved, and self-drainage is facilitated.
The sound absorption cavities in the acoustic super-structure units are orderly divided by the super-structure partition plates 4c, and the super-structure sound absorption cavities 4d are distributed in various modes and can be distributed in a serial and/or parallel combination mode. In this embodiment, the cross section of the sound absorption cavity in the acoustic super-structure unit is square or rectangular, and the cavity distribution should be as simple as possible, and the molding preparation is easy.
The surface of the conventional sound absorbing material 5 is covered with a layer of tissue 6, the thickness of the tissue 6 should be less than 0.5mm, and the tissue 6 is assembled between the conventional sound absorbing material 5 and the perforated panel 2. In this embodiment, the conventional sound absorbing material 5 is glass wool commonly used in engineering, and has the same length and width dimensions as the acoustic super-structure material plate 4.
In this embodiment, during assembly, the conventional sound absorbing material 5 may be applied to the surface of the acoustic metamaterial plate 4, and a cavity layer with a certain thickness may be left between the conventional sound absorbing material and the acoustic metamaterial plate 4.
In this embodiment, when the thickness of the assembly space of the super-structure composite sound absorbing member is specified, the thickness of each acoustic super-structure unit constituting the acoustic super-structure material plate 4 may be different, and the conventional sound absorbing material layer 5 covering the surface thereof may be uneven, and the acoustic super-structure unit and the conventional sound absorbing material layer 5 may both constitute a nested assembly.
The above description is only a preferred embodiment of the present utility model, and is not intended to limit the utility model in any way, and any person skilled in the art may make modifications or alterations to the disclosed technical content to the equivalent embodiments. However, any simple modification, equivalent variation and variation of the above embodiments according to the technical substance of the present utility model still fall within the protection scope of the technical solution of the present utility model.
Claims (10)
1. The light composite acoustic super-structure barrier sound-absorbing plate is characterized by comprising a screen body shell and a super-structure composite sound-absorbing member inserted into the screen body shell;
The super-structure composite sound-absorbing component comprises an acoustic super-structure material plate (4) and a traditional sound-absorbing material plate (5); the acoustic super-structure material plate (4) is arranged at one side of the screen body shell, which is far away from the sound source; the sound source is characterized in that an ultrasonic sound absorption hole (4 e) is formed in the plate surface of the acoustic ultrasonic material plate (4) facing the sound source.
2. A lightweight composite acoustic superconstructed barrier acoustic panel as claimed in claim 1, wherein said panel body comprises a sound insulation back panel (1) and a perforated panel (2) arranged in parallel, and a side wall panel (7) for connecting the two; and limit keels (3) for fixing the super-structure composite sound absorption member are also arranged at two ends of the screen body shell.
3. A light composite acoustic super-structure barrier sound absorbing board according to claim 1, characterized in that a gauze (6) with a thickness less than 0.5mm is arranged between the conventional sound absorbing material board (5) and the perforated panel (2).
4. A lightweight composite acoustic superconstructed barrier acoustic panel as claimed in claim 1, wherein said conventional panel of acoustic material (5) is a glass wool panel.
5. A lightweight composite acoustic ultra-structural barrier sound-absorbing panel according to claim 1, characterized in that the acoustic ultra-structural material panel (4) for an ultra-structural sound barrier is made of a fire-resistant corrosion-resistant sheet metal-like material having a thickness of less than 1mm.
6. A lightweight composite acoustic superstructural barrier sound-absorbing panel according to claim 1, characterized in that the acoustic superstructural material panel (4) is composed of spliced acoustic superstructural units.
7. A lightweight composite acoustic superconstructed barrier sound-absorbing panel as claimed in claim 6, wherein the thickness of each acoustic superconstructed unit in the sheet of acoustic superconstructed material (4) is not exactly the same.
8. The light composite acoustic super-structure barrier sound-absorbing panel according to claim 6, wherein the acoustic super-structure unit comprises a super-structure sound-insulating back plate (4 a), a super-structure panel (4 b), a super-structure partition plate (4 c) and a super-structure sound-absorbing cavity (4 d); the super-structure sound absorption holes (4 e) are formed in the surface of the super-structure panel (4 b).
9. A lightweight composite acoustic superconstructed barrier sound-absorbing panel as claimed in claim 8, wherein the superconstructed sound-absorbing apertures (4 e) are circular or polygonal in cross section.
10. A lightweight composite acoustic ultra-structural barrier sound absorbing panel according to claim 8, wherein the ultra-structural sound absorbing cavities (4 d) are orderly segmented by ultra-structural baffles (4 c) distributed in series and/or parallel combinations within the acoustic ultra-structural material panel (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322639419.9U CN220868012U (en) | 2023-09-27 | 2023-09-27 | Light composite acoustic super-structure barrier sound absorption board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322639419.9U CN220868012U (en) | 2023-09-27 | 2023-09-27 | Light composite acoustic super-structure barrier sound absorption board |
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| Publication Number | Publication Date |
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| CN220868012U true CN220868012U (en) | 2024-04-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322639419.9U Active CN220868012U (en) | 2023-09-27 | 2023-09-27 | Light composite acoustic super-structure barrier sound absorption board |
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| Country | Link |
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| CN (1) | CN220868012U (en) |
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2023
- 2023-09-27 CN CN202322639419.9U patent/CN220868012U/en active Active
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