Double-layer sound insulation board of sound barrier

Abstract

The utility model provides a sound barrier double-layer sound insulation board, and relates to the technical field of sound insulation boards, the sound barrier double-layer sound insulation board comprises a sound insulation board main body and a silencing layer, a plurality of sound inlet strip grooves are machined in the surface of one side of the sound insulation board main body, and the multiple sound inlet strip grooves are longitudinally formed and are arranged at equal intervals; a plurality of containing notches are formed in the sound insulation plate body, the interiors of the sound inlet strip grooves communicate with the interiors of the containing notches correspondingly, the sound attenuation layer comprises a plurality of filtering plates, a plurality of tone tuning holes are formed in the filtering plates, and sound attenuation cotton strips are arranged on the two sides of the long edges of the containing notches; according to the technical scheme, the two sides of each filtering plate with the rectangular cross section are fixed to the inner walls of the long edges of the corresponding containing groove opening correspondingly, the two filtering plates support the inner wall of one containing groove opening on the two sides of the sound inlet strip groove correspondingly, and on the premise that part of noise is counteracted and the sound insulation effect is achieved, the sound insulation effect is improved; the structural strength of the sound insulation board body is guaranteed, and the surface attractiveness of the sound insulation board body is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of sound insulation boards, in particular to a double-layer sound insulation board for sound barriers. Background Art

[0002] Sound insulation board is a kind of board that acts as a sound insulation effect, which can be divided into building sound insulation and structure sound insulation. Sound insulation board can not block all frequencies of sound, as objects have inherent resonance frequencies. For sounds close to the resonance frequency of objects, the sound insulation effect of sound insulation board is significantly reduced.

[0003] The patent document with publication number CN211817083U discloses a double-layer sound insulation board of a sound barrier, which can block and absorb part of the noise through the sound insulation module, and is helpful to reduce the impact of noise on the environment. The sound holes can allow sound waves to pass through and resonate with the air in the sound insulation module, thereby achieving the effect of sound absorption. The rubber pad can fill the gaps between the modules to prevent the sound from propagating through the gaps. The filter plate is wavy. When the sound wave passes through the filter plate, the wavy filter plate can distort the sound wave, thereby offsetting part of the sound wave to achieve the sound insulation effect. The sound-absorbing cotton can absorb noise, which is helpful to further reduce the spread of noise. The entire double-layer sound insulation board of the sound barrier has a simple structure, is easy to operate, and has a better effect than the traditional method.

[0004] However, in the process of implementing the above technical solution, it is found that the above technical solution has the following technical problems:

[0005] The existing double-layer sound insulation board of the sound barrier is provided with a sound insulation module with sound holes, rubber pads, filter plates and sound-absorbing cotton. When the sound waves pass through the sound holes, part of the noise can be offset by the filter plate, and the noise can be absorbed by the sound-absorbing cotton to ensure the sound insulation effect. However, in actual use, there are many sound holes opened on the sound insulation board. When the surface of the sound insulation board is impacted, the sound insulation board is prone to partially sink inward and cause the filter plate to deform, which ultimately affects the overall aesthetics of the sound insulation board and reduces the sound insulation effect of the sound insulation board. Utility Model Content

[0006] In order to overcome the problem that the existing double-layer sound insulation board of the sound barrier has many sound holes thereon, when the surface of the sound insulation board is impacted, the sound insulation board is prone to partially sink inward and deform the filter board, thereby reducing the aesthetics and sound insulation effect of the sound insulation board, the embodiment of the present application provides a double-layer sound insulation board of the sound barrier, by fixing the two sides of the filter board with a rectangular cross-section to the inner wall of the long side of the storage slot respectively, so that the two filter plates support the inner wall of a storage slot on both sides of the sound bar inlet slot respectively, so that the structural strength of the sound insulation board body can be guaranteed while offsetting part of the noise to achieve the sound insulation effect, and the situation of local depression caused by external impact will not occur.

[0007] The technical solution adopted by the embodiment of the present application to solve the technical problem is:

[0008] A double-layer sound barrier board comprises a sound barrier board body and a sound absorbing layer, wherein the sound absorbing layer is arranged inside the sound barrier board body;

[0009] Among them, one side surface of the sound insulation board body is processed with a plurality of sound bar inlet grooves, the interior of the sound insulation board body is processed with a plurality of storage notches, the sound absorbing layer includes a plurality of filter plates, and the plurality of filter plates are used in combination of two.

[0010] In a possible implementation, the plurality of sound bar inlet grooves are all disposed longitudinally, and the plurality of sound bar inlet grooves are arranged at equal intervals.

[0011] In a possible implementation, the interiors of the plurality of sound bar inlet grooves are respectively connected to the interiors of the plurality of storage slots, and the sound bar inlet groove is located at the center of one side of the storage slot.

[0012] In one possible implementation, the cross-section of the filter plate is rectangular, and the two filter plates used in combination are located on both sides of the sound bar inlet groove, and the directions of the two ends of the rectangular cross-section of the filter plate are respectively processed and fixed to the inner wall of the long side of the storage slot.

[0013] In a possible implementation, the longitudinal section of the filter plate is wavy, and two sides of the wavy section of the filter plate face the inner walls of the short sides of the receiving slot respectively.

[0014] In a possible implementation, a plurality of tuning holes are processed inside the filter plate, the plurality of tuning holes are arranged at equal intervals, and the plurality of tuning holes are respectively located at the wave crests of the filter plate.

[0015] In a possible implementation, silencer cotton strips are provided on both sides of the long side of the storage slot, the two silencer cotton strips are respectively matched with the inner walls on both sides of the long side of the storage slot, and the two filter plates used in combination are located on the inner sides of the two silencer cotton strips.

[0016] In summary, the present invention includes at least one of the following beneficial technical effects:

[0017] 1. By fixing the two sides of the filter plate with a rectangular cross section to the inner wall of the long side of the receiving slot, the two filter plates support the inner wall of a receiving slot on both sides of the sound bar inlet slot, respectively. On the premise of offsetting part of the noise to achieve the sound insulation effect, the structural strength of the sound insulation board body can be ensured, and there will be no local depression caused by external impact;

[0018] 2. By fitting and connecting two silencer cotton strips on the inner walls on both sides of the short side of the storage slot, a part of the noise sound waves are distorted and offset by the filter plate, and the remaining noise sound waves pass through the interior of multiple tuning holes and enter between the inner wall of the short side of the storage slot and the surface of the filter plate. While the silencer cotton strips absorb the noise, the noise sound waves are repeatedly rebounded, which is beneficial to improve the sound insulation effect of the sound insulation board body. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 For this utility model Figure 1 The enlarged schematic diagram of the middle A part;

[0021] Figure 3 It is a cross-sectional view of the utility model;

[0022] Figure 4 For this utility model Figure 3 Enlarged schematic diagram of part B in the middle.

[0023] Description of the accompanying drawings: 1. Sound insulation board body; 2. Sound-absorbing cotton strip; 3. Filter board; 4. Storage slot; 5. Sound bar inlet slot; 6. Tuning hole. DETAILED DESCRIPTION

[0024] The technical solution in the embodiment of the present application is to solve the problems of the above-mentioned background technology, and the overall idea is as follows:

[0025] Embodiment 1:

[0026] This embodiment introduces a specific structure of a double-layer sound insulation board for a sound barrier. Figure 1-Figure 4 As shown, it includes a sound insulation board body 1 and a sound absorbing layer arranged inside the sound insulation board body 1, a plurality of sound bar inlet grooves 5 are processed on one side surface of the sound insulation board body 1, a plurality of receiving notches 4 are processed inside the sound insulation board body 1, and the sound absorbing layer includes a plurality of filter plates 3;

[0027] Among them, by arranging multiple sound bar slots 5 longitudinally and ensuring that the multiple sound bar slots 5 are arranged at equal intervals, the overall aesthetics of the sound insulation board body 1 can be ensured when it is used;

[0028] Secondly, in order to ensure the overall structural strength of the sound insulation board body 1, no local dents will occur when it is impacted by the outside world, such as Figure 2 and Figure 4As shown, the sound bar inlet groove 5 is located at the center of one side of the receiving groove 4, and multiple filter plates 3 are used in combination in pairs, and the cross section of the filter plate 3 is set to a rectangular form to ensure that the two filter plates 3 used in combination are located on both sides of the sound bar inlet groove 5. By making the directions of the two ends of the rectangular cross section of the filter plate 3 respectively fixed to the inner wall of the long side of the receiving groove 4, the two filter plates 3 used in combination are supported on the inner wall of the receiving groove 4, which can ensure the structural strength of the sound insulation board body 1 and avoid being affected by the multiple receiving grooves 4 processed inside the sound insulation board body 1;

[0029] Furthermore, in order to ensure the sound insulation effect after the sound insulation board body 1 is equipped with a sound absorbing layer, as Figure 2 and Figure 4 As shown, the interiors of the multiple sound bar inlet grooves 5 are respectively connected with the interiors of the multiple storage slots 4, and the longitudinal section of the filter plate 3 is wavy. By setting the longitudinal section of the filter plate 3 to be wavy, the two sides of the wavy section of the filter plate 3 are respectively facing the inner walls of the short sides of the storage slots 4. When noise propagates through the air through the sound bar inlet grooves 5 to the interior of the storage slots 4, the filter plate 3 can distort the sound waves, thereby offsetting part of the noise to achieve the effect of sound insulation.

[0030] By adopting the above technical solution:

[0031] The above design fixes the two sides of the filter plate 3 with a rectangular cross-section to the inner wall of the long side of the storage slot 4, so that the two filter plates 3 support the inner wall of one storage slot 4 on both sides of the sound bar inlet slot 5. When the noise propagates through the air through the sound bar inlet slot 5 to the inside of the storage slot 4, the sound waves are distorted by the filter plate 3 with a wavy longitudinal section, which can offset part of the noise to achieve the sound insulation effect and ensure the structural strength of the sound insulation board body 1. When the sound insulation board body 1 is impacted by the outside world, there will be no local depression.

[0032] Embodiment 2:

[0033] Based on Example 1, this example introduces the specific structure of the filter plate 3. The filter plate 3 is processed with a plurality of tuning holes 6 inside, and silencer cotton strips 2 are arranged on both sides of the long side of the receiving slot 4.

[0034] Among them, by arranging the multiple tuning holes 6 at equal intervals and arranging the multiple tuning holes 6 at the wave crests of the filter plate 3, when the filter plate 3 distorts the sound waves through the wave surface, a part of the sound waves can directly pass through the inside of the tuning holes 6 and enter between the inner wall of the short side of the storage slot 4 and the surface of the filter plate 3, while the other part of the sound waves are blocked by the inclined surface and offset each other, which can ensure the effect of the filter plate 3 distorting the sound waves and reduce the pressure of the filter plate 3 distorting the sound waves;

[0035] Secondly, in order to ensure the noise isolation effect after the sound insulation board body 1 is equipped with a sound absorbing layer, such as Figure 2 As shown, the two silencer cotton strips 2 are respectively matched with the inner walls on both sides of the long sides of the storage slot 4, so that the two filter plates 3 used in combination are located on the inner sides of the two silencer cotton strips 2. When the noise sound waves pass through the interior of the tuning hole 6, a part of them can be absorbed by the silencer cotton strips 2, and the other part of the sound waves repeatedly bounces between the inner walls of the short sides of the storage slot 4 and the surfaces of the filter plates 3 until they are completely offset.

[0036] By adopting the above technical solution:

[0037] The above-mentioned design adapts and connects two silencer cotton strips 2 on the inner walls on both sides of the short side of the storage slot 4. When the noise propagates into the storage slot 4 through the sound strip slot 5, a part of the sound waves are distorted and offset by the filter plate 3, and the remaining noise sound waves pass through the interior of the multiple tuning holes 6 and enter between the inner wall of the short side of the storage slot 4 and the surface of the filter plate 3. While the silencer cotton strips 2 absorb the noise, the noise sound waves are repeatedly rebounded, which is beneficial to improving the sound insulation effect of the sound insulation board body 1.

[0038] Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly explaining the present invention, and are not intended to limit the implementation methods. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from this are still within the scope of protection of the present invention.

Claims

1. A double-layer sound insulation board for a sound barrier, characterized in that: include: Sound insulation board body (1); A sound-absorbing layer, which is arranged inside the sound insulation board body (1); A plurality of sound bar inlet grooves (5) are processed on one side surface of the sound insulation board body (1), a plurality of receiving notches (4) are processed inside the sound insulation board body (1), and the sound absorbing layer includes a plurality of filter plates (3), and the plurality of filter plates (3) are used in combination of two.

2. A double-layer sound insulation board for sound barriers as claimed in claim 1, characterized in that: The plurality of sound bar inlet grooves (5) are all arranged longitudinally, and the plurality of sound bar inlet grooves (5) are arranged at equal intervals.

3. A double-layer sound insulation board for sound barriers as claimed in claim 1, characterized in that: The interiors of the plurality of sound bar inlet grooves (5) are respectively connected to the interiors of the plurality of storage slots (4), and the sound bar inlet grooves (5) are located at the center of one side of the storage slots (4).

4. A double-layer sound insulation board for sound barriers as claimed in claim 1, characterized in that: The cross section of the filter plate (3) is rectangular, and the two filter plates (3) used in combination are located on both sides of the sound bar inlet groove (5). The directions of the two ends of the rectangular cross section of the filter plate (3) are respectively processed and fixed to the inner wall of the long side of the storage slot (4).

5. The double-layer sound insulation board for sound barrier according to claim 1, characterized in that: The longitudinal section of the filter plate (3) is wavy, and two sides of the wavy section of the filter plate (3) respectively face the inner walls of the short sides of the receiving slot (4).

6. A double-layer sound insulation board for sound barriers as claimed in claim 1, characterized in that: A plurality of tuning holes (6) are processed inside the filter plate (3), the plurality of tuning holes (6) are arranged at equal intervals, and the plurality of tuning holes (6) are respectively located at the wave crests of the filter plate (3).

7. The double-layer sound insulation board for sound barrier according to claim 1, characterized in that: Silencing cotton strips (2) are provided on both sides of the long side of the storage slot (4), and the two silencing cotton strips (2) are respectively matched with the inner walls on both sides of the long side of the storage slot (4), and the two filter plates (3) used in combination are located on the inner sides of the two silencing cotton strips (2).

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