Composite sound barrier panel

Abstract

The application discloses a composite sound barrier plate and belongs to the technical field of sound absorption, sound insulation and noise reduction. The composite sound barrier plate comprises a metal shell formed by connecting a perforated panel, a back plate and a frame structure, the frame structure comprises two vertical beams, a top cross beam and a bottom cross beam, and the top cross beam and the bottom cross beam are respectively connected and fixed with the perforated panel and the back plate; sound absorption cotton / plate is arranged in the metal shell, the sound absorption cotton / plate comprises a bottom plate and sound absorption wedges which are integrally formed with the bottom plate; a plurality of wavy bending surfaces are arranged on the perforated panel, and the wavy bending surfaces are in contact with inclined surfaces of the sound absorption wedges; a plurality of sound absorption holes are arranged on the wavy bending surfaces; and an elastic supporting metal net is arranged between the back plate and the sound absorption cotton / plate. The elastic supporting metal net can be conveniently installed on the back plate and stably supports the sound absorption cotton / plate; and the sound absorption wedges in the sound absorption cotton / plate enhance the sound absorption effect of the composite sound barrier plate.

Description

Technical Field

[0001] This invention relates to the field of sound absorption and noise reduction technology, and in particular to a composite sound barrier panel. Background Technology

[0002] With the rapid pace of urbanization, the transportation industry has also developed rapidly, and traffic noise pollution has gradually become a prominent problem, affecting people's lives, sleep, study, and work. One of the effective measures commonly adopted by countries around the world to control traffic noise is to install road noise barriers to reduce or block traffic noise, thereby improving the quality of life for residents near highways.

[0003] Sound barriers are an effective means of reducing traffic noise. Based on the materials used, they are mainly divided into two types: metallic and non-metallic. Sound barriers come in a variety of shapes and materials. In terms of materials, they are essentially either metallic or non-metallic. Metallic barriers are primarily made of galvanized steel sheets (including perforated sheets), aluminum sheets (including perforated sheets), and honeycomb aluminum sheets, with sound-absorbing glass wool sandwiched in between. Non-metallic barriers are made of fiberglass, transparent PC sheets, and cement boards with added sound-absorbing materials. Metallic barriers are gradually being replaced by non-metallic material barriers due to their higher cost, susceptibility to theft, corrosion, and poor weather resistance.

[0004] Existing metal road noise barriers consist of an outer metal shell filled with sound-absorbing material. Because the internal cavity cannot hold the sound-absorbing cotton / board in place, it is prone to shifting and falling off over time. In windy weather, if wind enters the shell through the sound-absorbing holes, it can create a strong vortex inside the cavity, impacting the inner walls and causing the sound-absorbing panels to tilt and collapse, thus shortening its lifespan. Summary of the Invention

[0005] This invention provides a composite sound barrier panel that solves the stability problem of the sound-absorbing cotton / board between the perforated panel and the back panel by setting a specific structure of elastic support metal mesh between the back panel and the sound-absorbing cotton / board, while reducing production costs while ensuring sound absorption effect.

[0006] The technical solution provided by this invention is as follows:

[0007] A composite sound barrier panel includes a perforated panel, a back panel, and a metal shell formed by connecting a frame structure. The frame structure includes two vertical beams, a top crossbeam, and a bottom crossbeam. The top and bottom crossbeams are respectively connected and fixed to the perforated panel and the back panel. Sound-absorbing cotton / board is disposed inside the metal shell. The sound-absorbing cotton / board includes a bottom plate and a sound-absorbing wedge integrally formed with the bottom plate, with the sound-absorbing wedge facing the perforated panel. The perforated panel has several wavy bending surfaces that contact the inclined surfaces of the sound-absorbing wedges, and several sound-absorbing holes are disposed on the wavy bending surfaces. An elastic supporting metal mesh is disposed between the back panel and the sound-absorbing cotton / board.

[0008] Furthermore, the back panel is provided with a trapezoidal recess; the elastic support metal mesh has a wavy mesh structure, with the edge of the elastic support metal mesh embedded in the bend of the trapezoidal recess, the crest of the elastic support metal mesh contacting the side of the sound-absorbing cotton / board, and the trough of the elastic support metal mesh contacting the bottom of the trapezoidal recess.

[0009] Furthermore, the base plate is a cuboid plate with a thickness of 10-25mm; the sound-absorbing wedges are staggered square pyramidal protrusions.

[0010] Furthermore, the tip of the vertical beam is connected to the wavy bending surface, the back plate connection of the vertical beam is connected to the back plate, the top of the vertical beam is connected to the lower end surface of the top crossbeam, and the bottom of the vertical beam is connected to the upper end surface of the bottom crossbeam.

[0011] Furthermore, the top and bottom crossbeams are provided with inter-plate connection parts, which include tenons and grooves; the upper part of the top crossbeam is provided with a tenon, and the lower part of the bottom crossbeam is provided with a groove that mates with the tenon.

[0012] Furthermore, the vertical beams, top beams, and bottom beams are welded from 1.2mm thick galvanized sheets.

[0013] Furthermore, the perforated front panel and back panel are made of bent aluminum alloy sheet or galvanized steel sheet with a thickness of 1.2mm.

[0014] Furthermore, the sound-absorbing holes are planar round holes with a diameter between 1mm and 3mm.

[0015] Furthermore, the sound-absorbing cotton / board is made of porous sound-absorbing materials such as glass wool, rock wool, and melamine cotton board.

[0016] Furthermore, the composite sound barrier panel has a thickness of 80mm, a length of 2450mm, and a width of 500mm.

[0017] The present invention has the following beneficial effects:

[0018] (1) The elastic support metal mesh can be easily installed on the back panel to provide stable support for the sound-absorbing cotton / board;

[0019] (2) The sound-absorbing wedges in the sound-absorbing cotton / board enhance the sound absorption effect of the composite sound barrier board;

[0020] (3) Composite sound barrier panels are easy to install and have a stable structure, which can meet the requirements of long-term application. Attached Figure Description

[0021] Figure 1 This is a 3D view of a composite sound barrier panel;

[0022] Figure 2 for Figure 1 A magnified view of a section at point A in the middle;

[0023] Figure 3 This is a front view of a composite sound barrier panel;

[0024] Figure 4 for Figure 3 Sectional view along the BB direction;

[0025] Figure 5 A three-dimensional view of the combination of the back panel, vertical beams, top crossbeams, bottom crossbeams, and elastic support metal mesh;

[0026] Figure 6 A three-dimensional view of the combination of the backplate and the elastic support metal mesh;

[0027] Figure 7 A side view of the combined backplate and elastic support mesh.

[0028] Figure 8 A 3D view of the perforated panel;

[0029] Figure 9 for Figure 8 A magnified view of a section at point C;

[0030] Figure 10 A 3D view of the sound-absorbing cotton / board;

[0031] Figure 11 This is a front view of the sound-absorbing cotton / board.

[0032] Figure 12 for Figure 11 Sectional view along the DD direction;

[0033] Figure 13 A 3D view of a metal mesh with elastic support;

[0034] Figure 14 This is a three-dimensional diagram of the vertical beam;

[0035] Figure 15 This is a 3D view of the top beam;

[0036] Figure 16 This is a 3D view of the bottom crossbeam.

[0037] In the diagram: 1. Perforated panel; 11. Wavy folded surface; 12. Sound-absorbing hole; 13. Panel screw hole; 2. Back panel; 21. Trapezoidal recess; 22. Back panel screw hole; 3. Vertical beam; 31. Beam tip; 32. Back panel connection; 33. Top of vertical beam; 34. Bottom of vertical beam; 4. Top crossbeam; 41. Top crossbeam screw hole; 5. Bottom crossbeam; 51. Bottom crossbeam screw hole; 6. Inter-panel connection; 61. Tenon; 62. Groove; 7. Sound-absorbing cotton / board; 71. Base plate; 72. Sound-absorbing wedge; 8. Elastic support metal mesh; 9. Screw. Detailed Implementation

[0038] To make the technical problems, technical solutions and advantages of the present invention clearer, a detailed description will be given below in conjunction with the accompanying drawings and specific embodiments.

[0039] This invention provides a composite sound barrier panel, such as... Figures 1 to 4 As shown, it includes a perforated panel 1, a back plate 2, and a frame structure forming a metal housing, such as Figure 5 As shown, the frame structure includes two vertical beams 3, a top horizontal beam 4, and a bottom horizontal beam 5. The structure of the vertical beams 3 is as follows: Figure 14 As shown, the structure of the top beam 4 is as follows: Figure 15 As shown, the structure of the bottom crossbeam 5 is as follows: Figure 16 As shown. The top crossbeam 4 and bottom crossbeam 5 are fixed to the perforated panel 1 and back panel 2 respectively by screws 9. The vertical beam 3, top crossbeam 4, and bottom crossbeam 5 are welded from 1.2mm thick galvanized sheet. An elastic support metal mesh 8 is provided between the back panel 2 and the sound-absorbing cotton / board 7.

[0040] like Figure 8 and Figure 9 As shown, the perforated panel 1 is a bent aluminum alloy plate or galvanized steel plate with a thickness of 1.2mm. The perforated panel 1 has several wavy bent surfaces 11, which contact the inclined surface of the sound-absorbing wedge 72. Several sound-absorbing holes 12 are provided on the wavy bent surfaces 11. The sound-absorbing holes 12 can be planar circular holes with a diameter between 1mm and 3mm, and the holes are arranged at certain intervals.

[0041] The tip 31 of the vertical beam 3 is connected to the wavy bending surface 11, the back plate connecting part 32 of the vertical beam 3 is connected to the back plate 2, the top 33 of the vertical beam 3 is connected to the lower end surface of the top crossbeam 4, and the bottom 34 of the vertical beam 3 is connected to the upper end surface of the bottom crossbeam 5.

[0042] The back panel 2 is made of bent aluminum alloy or galvanized steel sheet with a thickness of 1.2mm. The back panel 2 has trapezoidal recesses 21; in this embodiment, the back panel 2 has two trapezoidal recesses 21 for fixing the elastic support metal mesh 8. A cavity is formed between the back panel 2 and the sound-absorbing cotton / board 7. Noise passing through the sound-absorbing cotton / board 7 will repeatedly vibrate within the cavity, improving the sound insulation effect.

[0043] The perforated panel 1 has panel screw holes 13 at its top and bottom, the back panel 2 has back panel screw holes 22 at its top and bottom, the top crossbeam 4 has top crossbeam screw holes 41 that mate with the panel screw holes 13 and the back panel screw holes 22 respectively, and the top crossbeam 4 has top crossbeam screw holes 41 on both its front and rear sides. The bottom crossbeam 5 has bottom crossbeam screw holes 51 that mate with the panel screw holes 13 and the back panel screw holes 22 respectively, and the bottom crossbeam 5 has bottom crossbeam screw holes 51 on both its front and rear sides. The top crossbeam 4 and the bottom crossbeam 5 are fixed to the perforated panel 1 and the back panel 2 respectively by screws 9.

[0044] Sound-absorbing cotton / board 7 is installed in the metal casing. For example... Figures 10 to 12 As shown, the sound-absorbing cotton / board 7 includes a base plate 71 and sound-absorbing wedges 72 integrally formed with the base plate 71, with the sound-absorbing wedges 72 facing the perforated panel 1. The base plate 71 is a cuboid plate with a thickness of 10-25mm, ensuring the supporting strength of the sound-absorbing cotton / board 7. The sound-absorbing wedges 72, facing the perforated panel 1, are staggered square pyramidal protrusions, causing reflected noise to diverge, canceling or interfering with incident noise, eliminating or changing the direction of noise propagation, thus achieving the purpose of noise reduction. Specifically, the sound-absorbing cotton / board 7 is made of sound-absorbing materials such as glass wool, rock wool, and melamine cotton board, which are easy to install, cost-effective, and have fire resistance of Class B or higher. Melamine cotton board is preferred because it is lightweight and easy to install.

[0045] An elastic support metal mesh 8 is installed between the back panel 2 and the sound-absorbing cotton / board 7. The elastic support metal mesh 8 has a wavy mesh structure, such as... Figure 13As shown. The edge of the elastic support metal mesh 8 is embedded in the bend of the trapezoidal recess 21. The crest of the elastic support metal mesh 8 contacts the side of the sound-absorbing cotton / board 7, and the trough of the elastic support metal mesh 8 contacts the bottom of the trapezoidal recess 21. The structure of the elastic support metal mesh 8 can fix the sound-absorbing cotton / board 7 in the composite sound barrier panel. In addition, in windy weather, some wind enters the composite sound barrier panel through the sound-absorbing holes 12. The wind blows the sound-absorbing cotton / board 7, and the elasticity of the elastic support metal mesh 8 on the back of the sound-absorbing cotton / board 7 can alleviate the impact of the wind on the composite sound barrier panel, prevent the composite sound barrier panel from tipping over, improve the wind resistance of the composite sound barrier panel, and extend its service life. The compressive strength of the elastic support metal mesh 8 is greater than 30kPa, ensuring that the composite sound barrier panel will not be damaged under a level 10 wind. The elastic support metal mesh 8 is formed by weaving galvanized iron wire with a diameter of 0.5mm and bending it with a wire mesh bending machine. When the elastic support mesh 8 is installed on the back plate 2, an external force compresses the elastic support mesh 8, making its width smaller than the width of the bent portion of the trapezoidal recess 21. The edge of the elastic support mesh 8 is placed in the bent portion of the trapezoidal recess 21. After the external force is removed, the width of the elastic support mesh 8 returns to normal, and the elastic support mesh 8 is fixed on the back plate 2. Figure 6 and Figure 7 As shown, the elastic support metal mesh 8 can be easily installed on the back panel 2, providing stable support for the sound-absorbing cotton / board 7, thus reducing production costs while ensuring sound absorption.

[0046] The top crossbeam 4 and the bottom crossbeam 5 are provided with inter-panel connection parts 6. The inter-panel connection parts 6 include tenons 61 and grooves 62. In this embodiment, the upper part of the top crossbeam 4 is provided with tenons 61, and the lower part of the bottom crossbeam 5 is provided with grooves 62 that cooperate with tenons 61. When installing composite sound barrier panels, the upper and lower composite sound barrier panels can be easily fastened together through tenons 61 and grooves 62. It can be understood that the bottom of the top crossbeam 4 is provided with grooves 62, and the top of the bottom crossbeam 5 is provided with tenons 61 that cooperate with grooves 62, which can also achieve the connection of composite sound barrier panels.

[0047] To facilitate installation, the dimensions of the composite sound barrier panels are further limited: a thickness of 80mm, a length of 2450mm, and a width of 500mm. The composite sound barrier panels are lightweight, facilitating installation, and have minimal impact on the load-bearing capacity of the supporting structure. The composite sound barrier panels are easy to install, structurally stable, and can meet the requirements of long-term application.

[0048] The above description represents the preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A composite sound barrier panel, comprising a perforated panel (1), a back panel (2), and a metal shell formed by connecting a frame structure, wherein the frame structure comprises two vertical beams (3), a top horizontal beam (4), and a bottom horizontal beam (5), the top horizontal beam (4) and the bottom horizontal beam (5) being respectively connected and fixed to the perforated panel (1) and the back panel (2), characterized in that: A sound-absorbing cotton / board (7) is provided inside the metal shell. The sound-absorbing cotton / board (7) includes a base plate (71) and a sound-absorbing wedge (72) integrally formed with the base plate (71). The sound-absorbing wedge (72) faces the perforated panel (1). The perforated panel (1) is provided with several wavy curved surfaces (11), which are in contact with the inclined surface of the sound-absorbing wedge (72), and several sound-absorbing holes (12) are provided on the wavy curved surfaces (11). An elastic support metal mesh (8) is provided between the back panel (2) and the sound-absorbing cotton / board (7); The back panel (2) is provided with a trapezoidal recess (21); The elastic support metal mesh (8) has a wavy mesh structure. The edge of the elastic support metal mesh (8) is embedded in the bend of the trapezoidal recess (21). The crest of the elastic support metal mesh (8) contacts the side of the sound-absorbing cotton / board (7), and the trough of the elastic support metal mesh (8) contacts the bottom of the trapezoidal recess (21).

2. The composite sound barrier panel according to claim 1, characterized in that, The base plate (71) is a cuboid plate with a thickness of 10~25mm; The sound-absorbing wedges (72) are square cone-shaped protrusions arranged in an alternating pattern.

3. The composite sound barrier panel according to claim 1, characterized in that, The tip (31) of the vertical beam (3) is connected to the wavy bending surface (11), the back plate connecting part (32) of the vertical beam (3) is connected to the back plate (2), the top (33) of the vertical beam (3) is connected to the lower end surface of the top crossbeam (4), and the bottom (34) of the vertical beam (3) is connected to the upper end surface of the bottom crossbeam (5).

4. The composite sound barrier panel according to claim 3, characterized in that, The top crossbeam (4) and the bottom crossbeam (5) are provided with inter-plate connection parts (6), which include tenons (61) and grooves (62); The upper part of the top crossbeam (4) is provided with a tenon (61), and the lower part of the bottom crossbeam (5) is provided with a groove (62) that matches the tenon (61).

5. The composite sound barrier panel according to claim 1, characterized in that, The vertical beam (3), the top beam (4), and the bottom beam (5) are welded from galvanized sheets with a thickness of 1.2 mm.

6. The composite sound barrier panel according to claim 1, characterized in that, The perforated panel (1) and back panel (2) are made of bent aluminum alloy or galvanized steel sheet with a thickness of 1.2 mm.

7. The composite sound barrier panel according to claim 1, characterized in that, The sound-absorbing hole (12) is a planar circular hole with a diameter between 1 mm and 3 mm.

8. The composite sound barrier panel according to claim 1, characterized in that, The sound-absorbing cotton / board (7) is glass wool, rock wool, or melamine cotton board.

9. The composite sound barrier panel according to claim 1, characterized in that, The composite sound barrier panel is 80mm thick, 2450mm long, and 500mm wide.

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