Interference type acoustic board with polygonal structure

Abstract

The utility model discloses a polygonal structure interference type acoustic board which comprises a screen body, and a first sound absorption area and a second sound absorption area are arranged on the face, facing the sound source side, of the screen body. The first sound absorption area protrudes out of the outer wall face of the screen body, and the second sound absorption area is sunken towards the interior of the screen body. The cross sections of the first sound absorption areas and the cross sections of the second sound absorption areas are both polygonal, and the number of the first sound absorption areas and the number of the second sound absorption areas are both multiple. The first sound absorption areas are distributed on the screen body at equal intervals, and the second sound absorption areas are distributed below the first sound absorption areas at equal intervals. The polygonal concave-convex structure is formed on the surface of the screen body, so that the total energy of traffic noise is reduced through multiple interference effects of alternate reflection and scattering of the traffic noise on the surface of the screen body, and the equipment can absorb and reduce the noise by utilizing the structure of the equipment; according to the screen body, the concave-convex structure is used for replacing the situation that the existing sound absorption equipment needs to be filled with porous materials, and then the sound absorption function can be achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to traffic noise reduction equipment technical field, concretely is a kind of polygonal structure interference type sound absorption board. BACKGROUND

[0002] Sound barrier is currently the most main noise reduction measure widely used in traffic noise control field, it is through sound barrier screen body shielding and blocking the transmission path of traffic noise to achieve the purpose of noise reduction, so the sound absorption performance of screen body material and the length of time keeping sound absorption performance directly affect the noise reduction effect and durability of sound barrier whole. But the sound absorption board used by most sound barrier screen body used in domestic at present is to rely on the porous material filled in screen body to achieve the function of sound absorption and noise reduction;But it cannot solve the durability problem of the porous material structure that is too loose, that is, the better the sound absorption effect of porous material structure, the more difficult to be durable. SUMMARY

[0003] The utility model discloses a kind of polygonal structure interference type sound absorption board, to solve the problem raised in the above background technology.

[0004] To achieve the above object, the utility model provides the following technical scheme: a kind of polygonal structure interference type sound absorption board, including screen body, and being equipped with first sound absorption area and second sound absorption area on the side of the screen body facing sound source side;The first sound absorption area protrudes with the outer wall surface of the screen body, and the second sound absorption area is recessed to the inside of the screen body;The number of the first sound absorption area and the second sound absorption area are all multiple;Wherein, the first sound absorption area equidistantly distributes on the screen body, and the second sound absorption area equidistantly distributes below the first sound absorption area;The cross section of the first sound absorption area and the second sound absorption area are all polygon, and the second sound absorption area is located between two adjacent first sound absorption areas.

[0005] As preferred technical scheme of the utility model: the cross section of the first sound absorption area and the second sound absorption area are all hexagon.

[0006] As preferred technical scheme of the utility model: the screen body side side is equipped with grid hole, and the material of the screen body is cement-based inorganic material.

[0007] As preferred technical scheme of the utility model: the first sound absorption area includes first protruding part, second protruding part and third protruding part.

[0008] As preferred technical scheme of the utility model: the height difference between the first protruding part and the second protruding part is equal to the height difference between the second protruding part and the third protruding part.

[0009] As a preferred technical scheme of the utility model: the second sound absorption area includes first recessed part, second recessed part and third recessed part, wherein the height difference between the first recessed part and the second recessed part is equal to the height difference between the second recessed part and third recessed part.

[0010] As a preferred technical scheme of the utility model: the interval between any two adjacent first sound absorption areas is 1.73cm, and the interval between the first sound absorption area and the second sound absorption area is 1.73cm.

[0011] As a preferred technical scheme of the utility model: the height difference between the first convex part and the second convex part is 0.5cm, and the height difference between the first recessed part and the second recessed part is 0.5cm.

[0012] As a preferred technical scheme of the utility model: the interval between any one diagonal line of the first sound absorption area (2) and the second sound absorption area is 8cm, and the side length of any one outer edge of the first sound absorption area and the second sound absorption area is 5cm.

[0013] The utility model discloses the beneficial effects are: through the polygonal concave-convex type structure formed on the screen body surface, the total energy is reduced by the multiple interference effect of the alternate reflection and scattering of traffic noise on the screen body surface, so that the equipment can complete the absorption and reduction of noise by the structure itself, based on this, the equipment is simple in structure, but because of the simple structure, the noise reduction and absorption are realized, then the filling material is not needed, the production and use cost are low, and the uniformly distributed polygonal sound absorption area can also make the whole screen body look beautiful and generous. ACCURACY OF DRAWINGS

[0014] Figure 1 It is the main structure schematic diagram of the utility model;

[0015] Figure 2 It is Figure 1 It is the sectional structure schematic diagram of A-A place in the utility model;

[0016] Figure 3 It is Figure 2 It is the local enlarged schematic diagram of A place;

[0017] Figure 4 It is Figure 1 It is the local enlarged schematic diagram of B-B place;

[0018] Figure 5 It is Figure 4 It is the local enlarged schematic diagram of B place.

[0019] In the figure: 1, screen body; 2, first sound absorption area; 20, first convex part; 21, second convex part; 22, third convex part; 3, second sound absorption area; 30, first concave part; 31, second concave part; 32, third concave part; 4, grid hole. DETAILED DESCRIPTION

[0020] The embodiments of the present application are described in detail below, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application. In the description of the present application, it is understood that the terms "upper", "lower", "front", "upper surface" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0021] Please refer to Figures 1-5 The present application provides a polygonal structure interference type sound absorption plate, characterized in that: comprising a screen body 1, and a first sound absorption area 2 and a second sound absorption area 3 are arranged on one side of the screen body 1 facing the sound source; the first sound absorption area 2 is convex with the outer wall surface of the screen body 1, and the second sound absorption area 3 is concave to the inside of the screen body 1; the number of the first sound absorption area 2 and the second sound absorption area 3 is multiple; wherein the first sound absorption area 2 is equally spaced distributed on the screen body 1, and the second sound absorption area 3 is equally spaced distributed below the first sound absorption area 2; the cross section of the first sound absorption area 2 and the second sound absorption area 3 is polygonal, and the second sound absorption area 3 is located between two adjacent first sound absorption areas 2.

[0022] In summary, by forming a polygonal concave-convex structure on the surface of the screen body 1, the overall energy of the traffic noise is reduced by the multiple interference effect of the alternating reflection and scattering of the traffic noise on the surface of the screen body, so that the device can complete the absorption and reduction of noise by its own structure; based on this, although the device has a simple structure, it does not need to use filling materials while achieving the reduction and absorption of noise; secondly, the production and use cost is low; thirdly, the uniformly distributed polygonal sound absorption area can also make the whole screen body look beautiful and generous.

[0023] Specifically, since the cross sections of the first sound absorption area 2 and the second sound absorption area 3 are both hexagons, when sound propagates in the air, it will push air molecules to vibrate and form pressure waves. The sound waves will repeatedly reflect and absorb in the gaps and channels formed by the multiple hexagonal first sound absorption areas 2 and second sound absorption areas 3, thereby consuming sound energy and achieving sound absorption effect. In summary, the hexagonal sound absorption hole can effectively absorb and disperse sound waves, improve sound absorption effect, reduce noise, and enhance sound insulation performance through its unique geometric shape and structural design.

[0024] In addition, most of the sound absorption plates used in the sound barriers currently used in China are made of metal materials, which have the following problems: the anti-corrosion method of metal materials is generally not in place, especially the rivet connection part, which is prone to rust and has poor durability, affecting the use function and appearance; the noise absorption effect is reduced due to the insufficient opening rate of the outer metal material (up to 35%), thereby affecting the secondary absorption of reflected sound, resulting in reduced sound absorption performance; metal materials are high-energy consumption materials, which do not meet the material development trend of low carbon and emission reduction.

[0025] The material of the screen body 1 in the scheme is a cement-based inorganic material, and the sound absorption coefficient index is outstanding, which is increased by more than 20% compared with the general non-metal sound absorption plate, from 0.5 to 0.6; the sound insulation amount is significantly increased, which is increased by 20% compared with the general non-metal sound absorption plate, from 30 dB to 36 dB; the cost is low, which is reduced by 30% compared with the metal sound absorption plate; the use of non-metal inorganic materials has low energy consumption and less carbon emission, which is reduced by 70% or more compared with the metal sound absorption plate, so the problems of the metal screen body can be effectively solved.

[0026] In addition, the screen body 1 is provided with a grid hole 4 on the side, so that the grid hole 4 can also be used to realize the sound insulation capacity, and the self-weight of the screen body 1 can be reduced.

[0027] On the basis of the above scheme, since the first sound absorption area 2 includes the first protruding part 20, the second protruding part 21 and the third protruding part 22, more gaps are formed on the screen body 1 to improve the sound absorption and sound insulation capacity of the screen body 1.

[0028] Further, the height difference between the first protruding part 20 and the second protruding part 21 is equal to the height difference between the second protruding part 21 and the third protruding part 22. Therefore, the first sound absorption area 2 itself also has an outwardly protruding step surface, so that a single sound absorption area has multiple surfaces for absorbing and reflecting sound waves, thereby improving the sound absorption and noise reduction capacity of a single sound absorption area.

[0029] Similarly, the second sound absorption area 3 comprises a first recessed part 30, a second recessed part 31 and a third recessed part 32; wherein the height difference between the first recessed part 30 and the second recessed part 31 is equal to the height difference between the second recessed part 31 and the third recessed part 32.

[0030] In summary, by optimizing the structure of the two sound absorption areas, the multiple interference effects of alternating reflection and scattering of sound on the screen body 1 are used to reduce the overall energy, thereby enabling the sound absorption area to effectively improve the sound absorption and noise reduction capability.

[0031] In specific use: the screen body 1 is made of cement-based inorganic material, with a size of 196x50x10cm; the panel thickness is 3cm, the back plate thickness is 2cm, the grid hole size is 5x5cm, and the grid hole cell wall thickness is 2cm. The spacing between any two adjacent first sound absorption areas 2 is 1.73cm, and the spacing between the first sound absorption area 2 and the second sound absorption area 3 is 1.73cm. The height difference between the first protruding part 20 and the second protruding part 21 is 0.5cm, and the height difference between the first recessed part 30 and the second recessed part 31 is 0.5cm. The spacing between any one diagonal line of the first sound absorption area 2 and the second sound absorption area 3 is 8cm, and the side length of any one outer edge of the first sound absorption area 2 and the second sound absorption area 3 is 5cm.

[0032] The screen body 1 made of the above size has an average sound absorption coefficient of 0.7 in laboratory test, and a weighted sound insulation of 35dB or more. Based on this, the screen body is suitable for use in places where environmental noise needs to be reduced, such as highways, urban roads, building roof platforms, and temporary construction site surroundings.

[0033] The embodiments of the present application are described in detail above with reference to the drawings, but the present application is not limited to the described embodiments. For those skilled in the art, various changes, modifications, replacements and variations of the embodiments can be made without departing from the principles and spirits of the present application, and still fall within the protection scope of the present application.

Claims

1. A polygonal interference sound-absorbing panel, characterized by: It comprises a screen body (1), and a first sound absorption zone (2) and a second sound absorption zone (3) are provided on a side of the screen body (1) facing the sound source; The first sound absorbing area (2) protrudes from the outer wall surface of the screen body (1), and the second sound absorbing area (3) is recessed toward the interior of the screen body (1); The number of the first sound absorbing areas (2) and the number of the second sound absorbing areas (3) are both multiple; wherein the first sound absorbing areas (2) are evenly distributed on the screen body (1), and the second sound absorbing areas (3) are evenly distributed below the first sound absorbing areas (2); The cross sections of the first sound absorbing area (2) and the second sound absorbing area (3) are both polygonal, and the second sound absorbing area (3) is located between two adjacent first sound absorbing areas (2).

2. The polygonal interference sound absorbing panel according to claim 1, characterized in that: The cross sections of the first sound absorbing area (2) and the second sound absorbing area (3) are both hexagonal.

3. The polygonal interference sound absorbing panel according to claim 2, characterized in that: The side of the screen body (1) is provided with grid holes (4), and the material of the screen body (1) is a cement-based inorganic material.

4. The polygonal interference sound absorbing panel according to claim 1, 2 or 3, characterized in that: The first sound absorbing area (2) comprises a first protruding portion (20), a second protruding portion (21) and a third protruding portion (22).

5. The polygonal interference sound absorbing panel according to claim 4, characterized in that: The height difference between the first protrusion (20) and the second protrusion (21) is equal to the height difference between the second protrusion (21) and the third protrusion (22).

6. The polygonal interference-type sound-absorbing panel according to claim 5, characterized in that: The second sound absorption zone (3) comprises a first recessed portion (30), a second recessed portion (31) and a third recessed portion (32); wherein the height difference between the first recessed portion (30) and the second recessed portion (31) is equal to the height difference between the second recessed portion (31) and the third recessed portion (32).

7. The polygonal interference-type sound-absorbing panel according to claim 6, characterized in that: The distance between any two adjacent first sound absorption zones (2) is 1.73 cm, and the distance between the first sound absorption zone (2) and the second sound absorption zone (3) is 1.73 cm.

8. The polygonal interference sound absorbing panel according to claim 7, characterized in that: The height difference between the first protruding portion (20) and the second protruding portion (21) is 0.5 cm, and the height difference between the first recessed portion (30) and the second recessed portion (31) is 0.5 cm.

9. The polygonal interference sound absorbing panel according to claim 8, characterized in that: The distance between any diagonal line of the first sound absorbing area (2) and the second sound absorbing area (3) is 8 cm, and the length of any outer side of the first sound absorbing area (2) and the second sound absorbing area (3) is 5 cm.

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