Protruding wave-shaped sound barrier

Abstract

The utility model discloses a raised wave-shaped sound barrier, which comprises a screen body, the screen body is provided with a protruding part protruding towards the sound source side. The number of the protruding parts is multiple, the protruding parts are distributed on the screen body, and sound holes are distributed in the protruding parts. The cross section of each protruding part is provided with a wave crest and a wave trough. In conclusion, due to the arrangement of the convex part, the sound waves reflected back from different directions are subjected to destructive interference, so that the sound pressure level at the position is reduced. Sound waves are reflected in a delayed mode at wave troughs to limit energy of noise, so that the sound waves are enhanced due to superposition, and the influence of the noise on other areas is reduced. At the wave crest, sound waves can be reflected and scattered for multiple times, so that the energy of original sound waves is dispersed to different directions, the sound waves are uniformly distributed in a wave shape, and the noise reduction effect in different frequency ranges is improved. On the basis, the problems existing in an existing screen body are solved, and therefore the screen body is worthy of application and popularization.

Description

Technical Field

[0001] The utility model relates to the technical field of noise elimination equipment, in particular to a convex wavy sound barrier. Background Art

[0002] With the rapid development of modern industry and transportation in China, the noise problem has become increasingly serious. Due to the significant noise reduction effect, small land occupation, easy maintenance and other characteristics, the sound barrier has become one of the effective measures for controlling traffic noise pollution today. The following problems generally exist in the traditional sound barrier panel: that is, the panel structure is mostly flat, the sound insulation area is small, and the noise reduction effect is not ideal. Content of the Utility Model

[0003] The purpose of the utility model is to provide a convex wavy sound barrier to solve the problems put forward in the above background art.

[0004] To achieve the above purpose, the utility model provides the following technical solution: a convex wavy sound barrier, including a panel; the panel includes a sound insulation backboard and a convex part protruding towards the sound source side is arranged on the sound insulation backboard; the number of the convex parts is multiple and is distributed on the sound insulation backboard; wherein, sound holes are also distributed on the convex part, and the surface of the convex part facing the sound source side has wave crests and wave troughs.

[0005] As a preferred technical solution of the utility model: an absorption cavity is formed after the convex part is connected with the sound insulation backboard, and the sound holes are connected and communicated with the absorption cavity.

[0006] As a preferred technical solution of the utility model: the absorption cavity includes an inner layer and an outer layer; wherein, the outer layer is horizontally arranged in a strip shape between the inner layer and the convex part.

[0007] As a preferred technical solution of the utility model: the gap between the outer layer and the inner layer is 10-20 mm.

[0008] As a preferred technical solution of the utility model: the material of the absorption cavity is a thin film.

[0009] As a preferred technical solution of the utility model: the distance between the sound insulation backboard and the inner layer is 50-200 mm.

[0010] As a preferred technical solution of the utility model: the aperture diameter of the sound holes is equal to the hole spacing between any two adjacent sound holes.

[0011] As a preferred technical solution of the utility model: the perforation rate of the sound holes on the convex part is 1%-5%.

[0012] As a preferred technical solution of the present utility model: Support members are also provided on both sides of the screen body, and the screen body is mounted on the guardrail through the support members.

[0013] By adopting the above technical solution, the beneficial effect of the present utility model is that: Since there are wave crest positions and wave trough positions on the convex part, the cross-section of the convex part is in a wave shape; thus, sound waves reflected from different directions can interfere and cancel each other, thereby reducing the sound pressure level at this position. The wave troughs are used to delay the reflection of sound waves to limit the energy of the noise, so that the sound waves are enhanced due to superposition, reducing the influence of the noise on other areas. At the wave crest positions, the sound waves will undergo multiple reflections and scatterings, thereby dispersing the energy of the original sound wave in different directions, and using the wave shape to evenly distribute the sound waves, improving the noise reduction effect in different frequency ranges. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic cross-sectional structure diagram of the screen body of the present utility model;

[0015] Figure 2 is Figure 1 a partial enlarged schematic diagram of part A in

[0016] Figure 3 It is a schematic structural diagram of the present utility model in a working state.

[0017] In the figure: 1, screen body; 2, support member; 3, convex part; 4, wave trough position; 5, wave crest position; 6, sound absorption cavity; 7, sound insulation back plate; 8, sound hole; 9, outer layer; 10, inner layer. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present utility model, and should not be construed as a limitation of the present utility model. In the description of the present utility model, it should be understood that the terms "upper", "lower", "front", "upper surface", etc. 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 utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0019] Please refer to Figures 1-3, An embodiment provided by the present utility model: A convex wave-shaped sound barrier, including a screen body 1; the screen body 1 includes a sound insulation backboard 7 and a convex part 3 protruding towards the sound source side is provided on the sound insulation backboard 7; the number of the convex parts 3 is multiple and is distributed on the sound insulation backboard 7; wherein, sound holes 8 are also distributed on the convex part 3, and a wave crest 5 and a wave trough 4 are provided on the surface of the convex part 3 facing the sound source side.

[0020] To sum up, due to the wave crest 5 and the wave trough 4 provided on the convex part 3, the cross-section of the convex part 3 is in a wave shape; thus, the sound waves reflected back from different directions can interfere and cancel each other, thereby reducing the sound pressure level at this position. The wave trough is used to delay the reflection of sound waves to limit the energy of the noise, so that the sound waves are enhanced due to superposition, reducing the impact of the noise on other areas. At the wave crest, the sound waves will undergo multiple reflections and scatterings, thereby dispersing the energy of the original sound waves in different directions, and using the wave shape to evenly distribute the sound waves to improve the noise reduction effect in different frequency ranges.

[0021] At the same time, since the screen body 1 has the convex part 3, and the convex part 3 is on the screen body 1, the overall alternating vertical and horizontal wave shape is more beautiful, adding a sense of agility to the landscapes around roads and buildings, enhancing the ornamental value of the sound barrier itself, and realizing the harmonious coexistence of humans and nature.

[0022] Furthermore, an absorption cavity 6 is formed after the convex part 3 is connected to the sound insulation backboard 7, and the sound holes 8 are connected and communicated with the absorption cavity 6. Among them, the length of the sound insulation backboard 7 is 90 - 140 cm, the height is 90 - 110 cm, the thickness is 0.5 - 10 mm, and the distance between the sound insulation backboard 7 and the inner layer 10 is 50 - 200 mm.

[0023] To sum up, the sound insulation backboard 7 and the absorption cavity 6 can be used to further enhance the sound absorption ability of the device. That is, the absorption cavity 6 is used to delay the reflection of sound waves, and then the function of sound absorption and noise reduction is completed.

[0024] Based on this, the convex part 3 faces the sound source side, increasing the noise reflection area, improving the sound absorption area and noise reduction effect of the screen body 1, and effectively absorbing and reflecting noise. An absorption cavity 6 is formed between the convex part 3 and the sound insulation backboard 7, and the depth of the absorption cavity 6 changes with the wave-shaped texture on the convex part 3, that is, the absorption cavity 6 becomes larger at the wave crest 5 and smaller at the wave trough 4. Therefore, different absorption resonance peaks can be corresponding to the change of the cavity depth to broaden the sound absorption frequency band.

[0025] Even further, the absorption cavity 6 includes an inner layer 10 and an outer layer 9; wherein, the outer layer 9 is horizontally arranged in a strip shape between the inner layer 10 and the convex part 3. Since the outer layer 9 is horizontally arranged on the inner layer 10, the size of the absorption cavity 6 can be expanded, and thus the sound absorption and noise reduction ability of the device can be further improved.

[0026] Specifically, the gap between the outer layer and the inner layer is 10 to 20 mm. Among them, the inner layer 10 is installed on the side facing the sound absorption cavity 6; the outer layer 9 is installed on the side facing the convex part 3, and the material of the sound absorption cavity 6 is preferably a film made of materials such as PE, PVC, and PP. In summary, an environmentally friendly film layer material is selected to replace the existing glass wool rock and the like to solve the environmental pollution problem caused by the sound absorption material.

[0027] On the basis of the above solution, the aperture of the sound hole 8 is equal to the hole pitch between any two adjacent sound holes 8; by processing the sound hole 8 with the above values, the sound absorption effect of the device can be improved. For example: the aperture of the sound hole 8 is 2 mm, and the hole pitch between any two adjacent sound holes 8 is 2 mm.

[0028] Further, the perforation rate of the sound hole 8 on the convex part 3 is 1% to 5%. Therefore, the sound holes 8 are evenly distributed on the convex part 3, so that the sound absorption and noise reduction ability of the device can be improved by using the evenly distributed sound holes 8.

[0029] Further, since support members 2 are provided on both sides of the screen body 1, and the screen body 1 is mounted on the guardrail through the support members 2, the installation of the device on the guardrail is simple and convenient; specifically, the support members 2 are preferably H-shaped steels, and the number is two, which are respectively installed on both sides of the screen body 1, that is, one end of the screen body 1 is disposed in the groove of one of the H-shaped steels, and the other end is disposed in the groove of the other H-shaped steel, and the groove width of the H-shaped steel is greater than or equal to the thickness of the screen body 1. Therefore, when the two ends of the screen body 1 are inserted into the H-shaped steel, the risk of the screen body 1 slipping can be reduced.

[0030] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, without departing from the principle and spirit of the present invention, various changes, modifications, substitutions, and variations to these embodiments still fall within the protection scope of the present invention.

Claims

1. A raised wave-shaped sound barrier, characterized in that: It comprises a screen body (1); the screen body (1) comprises a sound insulation back plate (7) and a protrusion (3) protruding towards the sound source side is provided on the sound insulation back plate (7); The number of the raised portions (3) is plural and they are distributed on the sound insulation back plate (7); wherein the raised portions (3) are also provided with sound holes (8), and the raised portions (3) have wave crests (5) and wave troughs (4) on a side facing the sound source.

2. A raised wave-shaped sound barrier according to claim 1, characterized in that: After the raised portion (3) is connected to the sound insulation back plate (7), a sound absorption cavity (6) is formed, and the sound hole (8) is connected to the sound absorption cavity (6).

3. A raised wave-shaped sound barrier according to claim 2, characterized in that: The sound absorbing cavity (6) comprises an inner layer (10) and an outer layer (9); wherein the outer layer (9) is arranged in a strip shape and is disposed transversely between the inner layer (10) and the raised portion (3).

4. A raised wave-shaped sound barrier according to claim 3, characterized in that: The gap between the outer layer (9) and the inner layer (10) is 10 to 20 mm.

5. A raised wave-shaped sound barrier according to claim 4, characterized in that: The sound absorbing cavity (6) is made of a thin film.

6. A raised wave-shaped sound barrier according to claim 5, characterized in that: The distance between the sound insulation back plate (7) and the inner layer (10) is 50 to 200 mm.

7. A convex wave-shaped sound barrier according to any one of claims 1 to 6, characterized in that: The aperture of the sound hole (8) is equal to the hole spacing between any two adjacent sound holes (8).

8. The convex wave-shaped sound barrier according to claim 7, characterized in that: The perforation rate of the sound hole (8) on the raised portion (3) is 1% to 5%.

9. A raised wave-shaped sound barrier according to claim 8, characterized in that: Support members (2) are also provided on both sides of the screen body (1), and the screen body (1) is mounted on the guardrail via the support members (2).

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