Novel road sound barrier

Abstract

The utility model discloses a novel road sound barrier, and belongs to the technical field of sound absorption and insulation and noise reduction. The novel road sound barrier comprises connecting stand columns arranged at certain intervals and composite plates arranged between the adjacent connecting stand columns, the bottoms of the connecting stand columns are fixed to a base, each composite plate is provided with a metal shell formed by connecting a perforated panel, a back plate and an end keel, and sound absorption cotton / plates are arranged on the metal shells. An elastic supporting metal net is fixedly arranged between the back plate and the sound absorption cotton / plate; sound absorption holes are formed in the perforated panel; the end keel is of a rectangular frame structure and is fixedly connected with the edge of the panel with the holes and the edge of the back plate. The sound absorption device has the beneficial effects that the elastic supporting metal net can be conveniently mounted on the back plate and plays a role in stably supporting the sound absorption cotton / plate; the rainproof structure of the composite board can prevent rainwater from entering the composite board; the novel road sound barrier is convenient to install and construct, stable in structure and capable of meeting the long-time application requirement.

Description

Technical Field

[0001] The utility model relates to the technical field of sound absorption, insulation and noise reduction, in particular to a novel road sound barrier. Background Art

[0002] Bustling traffic is often seen as a sign of a prosperous city. However, with the acceleration of my country's urbanization, the transportation industry has also developed rapidly, and the problem of traffic noise pollution has gradually become prominent, seriously affecting people's lives, sleep, study and work. To control traffic noise, one of the effective measures commonly adopted by countries around the world is to set up road sound barriers to reduce or block traffic noise, thereby improving the quality of life of residents near highways.

[0003] Sound barriers are one of the effective means to reduce traffic noise. According to the materials used, they are mainly divided into two types: metal and non-metal. Sound barriers come in a variety of shapes and materials. As far as materials are concerned, the selection is nothing more than metal barriers and non-metal barriers. Metal barriers are basically made of galvanized sheets (including openings), aluminum sheets (including openings), honeycomb aluminum sheets, etc., with sound-absorbing glass wool sandwiched in the middle; non-metal screens are nothing more than fiberglass, PC transparent sheets, cement boards with sound-absorbing materials, etc.; metal barriers are gradually replaced by non-metallic barriers due to their high cost, easy theft, corrosion, poor weather resistance and other disadvantages.

[0004] The general principle for selecting sound barrier materials is good noise reduction performance, safe and reliable structure, economical material price, low installation cost, durability, long service life, harmonious landscape, and beautiful appearance. Materials such as glass wool not only have good sound absorption performance but also have excellent properties such as non-flammable, non-corrosive, light weight and not easy to age. They are widely used in general acoustic engineering and are often used in the design of sound barriers in the past. However, with the development of society, the new national standard GB / T51335-2018 "Technical Specifications for Sound Barrier Structures" implemented in 2018 stipulates in Article 4.0.3, Section 6: "Sound-absorbing materials should use materials with sound absorption coefficients that meet the design requirements, and should not use materials with poor durability and harmful to the human body." Traditional sound-absorbing materials such as glass wool and rock wool have brittle internal fibers and are easily shed into the air to form dust pollution, which can cause adverse reactions to the skin, eyes, mouth and nose, and even cause diseases such as silicosis and pleural mesothelioma. They are harmful to the human body and pose potential health and environmental problems. Developed countries such as Europe, the United States, Japan and Germany are cautious about the use of glass wool and rock wool, and even restrict their use. Sandstone boards are environmentally friendly, but have the problem of being heavy.

[0005] According to the new standard, the existing metal road sound barriers are recommended to use new environmentally friendly materials such as melamine sponge. The outer shell is a metal shell and the inner part is filled with sound-absorbing material. However, since the internal cavity of the barrier cannot fix the melamine sponge, it is easy to shift and fall off after a long time. Utility Model Content

[0006] The utility model provides a novel road sound barrier, which solves the problem of stability of the sound-absorbing cotton / board between the perforated panel and the backboard by arranging an elastic supporting metal mesh with a specific structure between the backboard and the sound-absorbing cotton / board, and reduces the problem of production cost while ensuring the sound absorption effect.

[0007] The utility model provides the following technical solutions:

[0008] A new type of road sound barrier, including connecting columns arranged at certain intervals and composite plates arranged between adjacent connecting columns, the bottoms of the connecting columns are fixed on a base, the composite plate is provided with a metal shell formed by connecting a perforated panel, a back plate and an end keel, sound-absorbing cotton / board is provided on the metal shell, and an elastic supporting metal mesh is fixedly provided between the back plate and the sound-absorbing cotton / board; sound-absorbing holes are provided on the perforated panel, and the sound-absorbing holes are arranged at intervals; a plurality of trapezoidal protrusions are provided on the perforated panel, and the part of the perforated panel outside the trapezoidal protrusions is in contact with the sound-absorbing cotton / board; a first cavity is formed between the trapezoidal protrusions and the sound-absorbing cotton / board; a second cavity is formed between the back plate and the sound-absorbing cotton / board; the end keel is a rectangular frame structure formed by two vertical beams, a top cross beam and a bottom cross beam, and the end keel is fixedly connected to the perforated panel and the edge of the back plate respectively.

[0009] Furthermore, the back panel is provided with a trapezoidal recess; the elastic supporting metal mesh is a wavy mesh structure, the edge of the elastic supporting metal mesh is embedded in the bending portion of the trapezoidal recess, the crest of the elastic supporting metal mesh contacts the side of the sound-absorbing cotton / board, and the trough of the elastic supporting metal mesh contacts the bottom of the trapezoidal recess.

[0010] Furthermore, the perforated panel and the back panel are made of aluminum alloy plate or galvanized steel plate with a thickness of 1.2 mm; the end keel is made of galvanized plate with a thickness of 1.2 mm welded together.

[0011] Furthermore, panel screw holes are set at both lateral ends of the perforated panel, back panel screw holes are set at both lateral ends of the back panel, vertical beam screw holes are set on the front and rear sides of the vertical beam, and the perforated panel and the back panel are respectively fixedly connected to the vertical beam by screws.

[0012] Furthermore, the upper inclined surface of the trapezoidal protrusion has no sound absorption holes, and the vertical plane and the lower inclined surface of the trapezoidal protrusion are provided with sound absorption holes.

[0013] Furthermore, a tenon is provided at the upper portion of the top crossbeam, and a groove matching the tenon is provided at the lower portion of the bottom crossbeam.

[0014] Furthermore, the sound-absorbing cotton / board is a material selected from the group consisting of sandstone board, expanded sandstone board, melamine cotton board and microporous ceramic board; the sound-absorbing cotton / board is a rectangular board with a thickness of 15 to 25 mm.

[0015] Furthermore, the compressive strength of the elastic supporting metal mesh is greater than 30 kPa.

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

[0017] Furthermore, the connecting column is I-shaped, and the lateral sides of the connecting column are slide grooves; the material of the connecting column is stainless steel, and the height of the connecting column is 3 meters to 4 meters; connecting plates are fixedly provided on both sides of the bottom of the connecting column, and at least one stud installation port is provided on the connecting plate; ribs are provided on the connecting column and the connecting plate.

[0018] Furthermore, the base is cast by concrete, and studs corresponding to the stud installation openings of the connecting plate are anchored on the base, and nuts are arranged on the studs; the anchoring length of the studs in the base is set at 30 to 50 centimeters.

[0019] The utility model has the following beneficial effects:

[0020] (1) The elastic supporting metal mesh can be easily installed on the back panel to provide stable support for the sound-absorbing cotton / board;

[0021] (2) The rainproof structure of the composite panel can prevent rainwater from entering the interior of the composite panel, thereby ensuring the sound absorption effect of the composite panel;

[0022] (3) The new type of road sound barrier is easy to install and construct, has a stable structure, and can meet long-term application requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a three-dimensional picture of the new road sound barrier;

[0024] Figure 2 for Figure 1 A partial enlarged view of the middle A;

[0025] Figure 3 This is a top view of the new road sound barrier;

[0026] Figure 4 This is a side view of the new road sound barrier;

[0027] Figure 5 is a three-dimensional diagram of a composite panel;

[0028] Figure 6 is a front view of the composite plate;

[0029] Figure 7 is a side view of the composite plate;

[0030] Figure 8It is a three-dimensional diagram of the assembly state of the back plate, the end keel and the elastic supporting metal mesh;

[0031] Fig. 9 A three-dimensional diagram of the back plate and the elastic supporting metal mesh in a combined state;

[0032] Fig.10 It is a three-dimensional image of a panel with holes;

[0033] Fig.11 It is a partial side view of the panel with holes;

[0034] Fig.12 A three-dimensional diagram of the combined state of the connecting column and the connecting plate;

[0035] Fig.13 It is a three-dimensional diagram of the connection column with ribs and the connection plate in the assembled state;

[0036] Fig.14 It is a three-dimensional diagram of the vertical beam;

[0037] Fig.15 A three-dimensional image of the back panel;

[0038] Fig.16 This is a three-dimensional diagram of the top beam;

[0039] Fig.17 This is a three-dimensional image of the bottom beam.

[0040] In the figure, 1, composite board; 11, panel with holes; 111, trapezoidal protrusion; 112, sound-absorbing hole; 113, panel screw hole; 12, back plate; 121, trapezoidal recess; 122, back plate screw hole; 13, end keel; 131, vertical beam; 1311, front of vertical beam; 1312, rear of vertical beam; 1313, top of vertical beam; 1314, bottom of vertical beam; 132, top cross beam; 1321, tenon; 133, bottom cross beam; 1331, groove; 134, vertical beam screw hole; 14, sound-absorbing cotton / board; 15, elastic supporting metal mesh; 16, first cavity; 17, second cavity; 18, screw; 2, connecting column; 21, slide groove; 3, base; 4, connecting plate; 41, stud installation port; 5, stud; 6, nut; 7, rib plate. DETAILED DESCRIPTION

[0041] In order to make the technical problems to be solved, technical solutions and advantages of the present invention more clear, a detailed description will be given below in conjunction with the accompanying drawings and specific embodiments.

[0042] The utility model embodiment provides a new type of road sound barrier, such as Figures 1 to 4 As shown, it includes connecting columns 2 arranged at certain intervals and composite panels 1 arranged between adjacent connecting columns, and the bottoms of the connecting columns 2 are fixed on a base 3.

[0043] like Figures 5 to 7 As shown, the composite panel 1 is provided with a perforated panel 11, a back panel 12 and an end keel 13. The perforated panel 11, the back panel 12 and the end keel 13 are connected to form a metal shell, and sound-absorbing cotton / board 14 is arranged in the metal shell, and an elastic supporting metal mesh 15 is arranged between the back panel 12 and the sound-absorbing cotton / board 14.

[0044] like Fig.10 As shown, the perforated panel 11 is a bent aluminum alloy plate or a galvanized steel plate with a thickness of 1.2 mm. Sound-absorbing holes 112 are arranged on the perforated panel 11. The sound-absorbing holes 112 may be planar circular holes with a hole diameter between 1 mm and 3 mm, and the circular holes are arranged at certain intervals. A plurality of trapezoidal protrusions 111 are arranged on the perforated panel 11. In this embodiment, four trapezoidal protrusions 111 are taken as an example. The portion of the perforated panel 11 outside the trapezoidal protrusions 111 is in contact with the sound-absorbing cotton / plate 14. A first cavity 16 is formed between the trapezoidal protrusion 111 and the sound-absorbing cotton / plate 14. The provision of the first cavity 16 can increase the sound absorption effect of the composite panel 1 on low-frequency sounds. The upper inclined surface of the trapezoidal protrusion 111 is a plate without sound-absorbing holes 112, and the vertical plane and the lower inclined surface of the trapezoidal protrusion 111 are provided with sound-absorbing holes 112, as shown in FIG. Fig.11 As shown, such a structural design can prevent rainwater from entering the interior of the composite panel 1 , thereby ensuring the sound absorption effect of the composite panel 1 .

[0045] like Fig.15 As shown, the back plate 12 is a bent aluminum alloy plate or a galvanized steel plate with a thickness of 1.2 mm. The back plate 12 is provided with a trapezoidal concave portion 121. In this embodiment, the back plate 12 is provided with two trapezoidal concave portions 121 for fixing the elastic supporting metal mesh 15. Between the back plate 12 and the sound-absorbing cotton / plate 14 is a second cavity 17. The "leaked" noise after passing through the sound-absorbing cotton / plate 14 will repeatedly vibrate in the second cavity 17, thereby improving the sound insulation effect.

[0046] like Figure 8 As shown, the end keel 13 is a rectangular frame structure formed by two vertical beams 131, a top cross beam 132 and a bottom cross beam 133, and is fixed to the back plate 12 by rivets. Fig.14 is a three-dimensional diagram of the vertical beam 131, Fig.16 is a three-dimensional diagram of the top crossbeam 132, Fig.17It is a three-dimensional diagram of the bottom crossbeam 133. The front part 1311 of the vertical beam 131 is connected to the perforated panel 11, the rear part 1312 of the vertical beam 131 is connected to the back plate 12, the top part 1313 of the vertical beam 131 is connected to the lower surface of the end of the top crossbeam 132, and the bottom part 1314 of the vertical beam 131 is connected to the upper surface of the end of the bottom crossbeam 133. The end keel 13 is welded from a galvanized sheet with a thickness of 1.2 mm. The upper part of the top crossbeam 132 is provided with a tenon 1321, and the lower part of the bottom crossbeam 133 is provided with a groove 1331 that matches the tenon 1321. When installing the composite board 1, the upper and lower composite boards 1 can be conveniently buckled together through the tenon 1321 and the groove 1331. The lateral end of the perforated panel 11 is fixedly installed with the vertical beam 131.

[0047] Specifically, panel screw holes 113 are set at both lateral ends of the perforated panel 11, back panel screw holes 122 are set at both lateral ends of the back panel 12, vertical beam screw holes 134 are set on the front and rear sides of the vertical beam 131, and the perforated panel 11 and the back panel 12 are fixedly connected to the vertical beam 131 respectively by screws 18.

[0048] The sound-absorbing cotton / board 14 is a rectangular board with a thickness of 15 to 25 mm, preferably 20 mm, which is low in cost while ensuring the sound absorption effect. Specifically, the sound-absorbing cotton / board 14 is made of environmentally friendly materials, such as sandstone board, expanded sandstone board, melamine cotton board and microporous ceramic board. The above four raw materials are environmentally friendly, do not contain adhesives, are easy to install, have high cleanliness, have no free floating objects in the air, and have fire resistance that can reach B1 level or above. Melamine cotton board is preferably used, which is light in weight and easy to install and construct.

[0049] The elastic supporting metal mesh 15 is a wave mesh structure, the edge of the elastic supporting metal mesh 15 is embedded in the bending part of the trapezoidal concave part 121, the wave crest of the elastic supporting metal mesh 15 contacts the side of the sound-absorbing cotton / board 14, and the wave trough of the elastic supporting metal mesh 15 contacts the bottom of the trapezoidal concave part 121. The structure of the elastic supporting metal mesh 15 can fix the sound-absorbing cotton / board 14 in the composite board 1. In addition, when encountering strong winds, after part of the wind enters the first cavity 16 through the sound-absorbing hole 112, the wind blows the sound-absorbing cotton / board 14, and the elastic action of the elastic supporting metal mesh 15 on the back of the sound-absorbing cotton / board 14 can alleviate the impact of the wind on the composite board 1, prevent the composite board 1 from tipping over, improve the wind resistance of the composite board 1, and extend the service life. The compressive strength of the elastic supporting metal mesh 15 is greater than 30kPa, which ensures that the composite board 1 is in a wind of level 10 and the composite board 1 is not damaged. The elastic support metal mesh 15 is formed by weaving galvanized iron wire with a diameter of 0.5 mm and then bending it with a wire mesh bending machine. When the elastic support metal mesh 15 is installed on the back plate 12, the external force compresses the elastic support metal mesh 15 so that the width of the elastic support metal mesh 15 is smaller than the width of the bending portion of the trapezoidal concave portion 121, and the edge of the elastic support metal mesh 15 is placed in the bending portion of the trapezoidal concave portion 121. After the external force is removed, the width of the elastic support metal mesh 15 is restored, and the elastic support metal mesh 15 is fixed on the back plate 12. Fig. 9 The elastic supporting metal mesh 15 can be conveniently installed on the back plate 12 to provide stable support for the sound absorbing cotton / board 14, thereby ensuring the sound absorbing effect and reducing the production cost.

[0050] In order to facilitate installation, the size of the composite board 1 is further limited, and the thickness of the composite board 1 is 80 mm, the length is 2450 mm, and the width is 500 mm. The composite board 1 is light in weight, easy to install, and has little bearing influence on the composite board support structure.

[0051] like Fig.12 As shown, the connecting column 2 is an I-shaped column, and the lateral sides of the connecting column 2 are slide grooves 21 for installing the composite panel 1. The material of the connecting column 2 is stainless steel, and the height of the connecting column 2 is 3 meters to 4 meters. Connecting plates 4 are fixedly provided on both sides of the bottom of the connecting column 2, and at least one stud installation port 41 is provided on the connecting plate 4. The base 3 is cast by concrete, and the base 3 is anchored with studs 5 corresponding to the stud installation ports 41 of the connecting plate 4, and nuts 6 are provided on the studs 5 to fix the connecting column 2 to the base 3. In order to ensure the fixing strength of the connecting column 2 and the base 3, the anchoring length of the stud 5 in the base 3 is set at 30 to 50 centimeters. In order to further enhance the connection strength between the connecting column 2 and the base 3, ribs 7 are provided on the connecting column 2 and the connecting plate 4, as shown in FIG. Fig.13 As shown. The new road sound barrier is easy to install and construct, has a stable structure, and can meet long-term application requirements.

[0052] The above is a preferred embodiment of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A novel road sound barrier, comprising connecting columns (2) arranged at certain intervals and a composite plate (1) arranged between adjacent connecting columns (2), wherein the bottom of the connecting columns (2) is fixed on a base (3), and characterized in that: The composite board (1) is provided with a metal shell formed by connecting a perforated panel (11), a back plate (12) and an end keel (13); a sound-absorbing cotton / board (14) is provided in the metal shell; and an elastic supporting metal mesh (15) is fixedly provided between the back plate (12) and the sound-absorbing cotton / board (14); The perforated panel (11) is provided with sound absorbing holes (112), and the sound absorbing holes (112) are arranged at intervals; A plurality of trapezoidal protrusions (111) are arranged on the perforated panel (11), and a portion of the perforated panel (11) outside the trapezoidal protrusions (111) is in contact with the sound-absorbing cotton / board (14); A first cavity (16) is formed between the trapezoidal protrusion (111) and the sound-absorbing cotton / board (14); A second cavity (17) is formed between the back plate (12) and the sound-absorbing cotton / board (14); The end keel (13) is a rectangular frame structure formed by two vertical beams (131), a top cross beam (132) and a bottom cross beam (133). The end keel (13) is fixedly connected to the edge of the perforated panel (11) and the back panel (12) respectively.

2. The novel road sound barrier according to claim 1 is characterized in that: The back plate (12) is provided with a trapezoidal concave portion (121); The elastic supporting metal mesh (15) is a wave mesh structure, the edge of the elastic supporting metal mesh (15) is embedded in the bending part of the trapezoidal concave portion (121), the wave crest of the elastic supporting metal mesh (15) contacts the side surface of the sound absorbing cotton / plate (14), and the wave trough of the elastic supporting metal mesh (15) contacts the bottom of the trapezoidal concave portion (121).

3. The new road sound barrier according to claim 1 is characterized in that: The perforated panel (11) and the back panel (12) are made of aluminum alloy plate or galvanized steel plate, with a thickness of 1.2 mm; The end keel (13) is formed by welding a galvanized sheet with a thickness of 1.2 mm.

4. The new road sound barrier according to claim 1 is characterized in that: Panel screw holes (113) are arranged at two transverse ends of the perforated panel (11), back panel screw holes (122) are arranged at two transverse ends of the back panel (12), and vertical beam screw holes (134) are arranged at the front and rear sides of the vertical beam (131). The perforated panel (11) and the back panel (12) are respectively fixedly connected to the vertical beam (131) by screws (18).

5. The novel road sound barrier according to claim 1 is characterized in that: The upper inclined surface of the trapezoidal protrusion (111) has no sound absorption holes (112), and the vertical plane and the lower inclined surface of the trapezoidal protrusion (111) are provided with sound absorption holes (112).

6. The novel road sound barrier according to claim 1 is characterized in that: The upper portion of the top crossbeam (132) is provided with a tenon (1321), and the lower portion of the bottom crossbeam (133) is provided with a groove (1331) matched with the tenon (1321).

7. The novel road sound barrier according to claim 1 is characterized in that: The sound-absorbing cotton / board (14) is a material selected from the group consisting of sandstone board, expanded sandstone board, melamine cotton board and microporous ceramic board; The sound-absorbing cotton / board (14) is a rectangular board with a thickness of 15 to 25 mm.

8. The novel road sound barrier according to claim 1 is characterized in that: The composite board (1) has a thickness of 80 mm, a length of 2450 mm and a width of 500 mm.

9. The novel road sound barrier according to claim 1 is characterized in that: The connecting column (2) is I-shaped, and two lateral sides of the connecting column (2) are slide grooves (21); The material of the connecting column (2) is stainless steel, and the height of the connecting column (2) is 3 meters to 4 meters; A connecting plate (4) is fixedly arranged on both sides of the bottom of the connecting column (2), and at least one stud installation opening (41) is arranged on the connecting plate (4); Ribs (7) are provided on the connecting columns (2) and the connecting plates (4).

10. The novel road sound barrier according to claim 9 is characterized in that: The base (3) is cast by concrete, and a stud (5) corresponding to the stud installation opening (41) of the connecting plate (4) is anchored on the base (3), and a nut (6) is provided on the stud (5); The anchoring length of the stud (5) in the base (3) is set at 30 to 50 centimeters.

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