Noise reduction structure of road protective fence

Abstract

The utility model discloses a noise reduction structure of a road protective fence, which relates to the technical field of protective fences, and comprises a concrete base, a protective front fence and a noise reduction component, the concrete base is buried in the ground, the protective front fence is fixedly connected on the top surface of the concrete base close to a road, and the noise reduction component is fixedly connected with the protective front fence. A noise reduction assembly is arranged on the top face, away from a road, of the concrete base and comprises rear steel stand columns, outer-layer sound absorption plates, sound absorption cotton plates, sound insulation back plate pieces and top noise reduction pieces, the concrete base is fixedly connected with two sets of rear steel stand columns, and three sets of mounting grooves are formed in the corresponding faces of the two sets of rear steel stand columns. The outer-layer sound absorption plate piece, the sound absorption cotton plate piece and the sound insulation back plate piece are sequentially installed in the three sets of installation grooves from outside to inside in a sliding mode, the top of the rear steel stand column is fixedly connected with a top sealing cover, the top sealing cover is fixedly connected with an arc-shaped noise reduction plate, through the structure, the excellent noise reduction effect can be achieved, and the impact resistance is high.

Description

Technical Field

[0001] This utility model relates to the field of protective fence technology, specifically a noise reduction structure for a highway protective fence. Background Technology

[0002] With the acceleration of urbanization and the continuous increase in traffic flow, highway noise pollution has become increasingly serious, severely impacting the quality of life and physical and mental health of residents along the route. To reduce traffic noise, protective fences or sound barriers are often installed on both sides of the highway. However, traditional protective fences usually only have simple anti-collision functions and have limited noise reduction effects. Common noise reduction barriers mostly adopt a single sound absorption or sound insulation structure, such as using only perforated panels for sound absorption or relying solely on thick sound insulation panels to block noise. They are difficult to effectively deal with both high-frequency and low-frequency noise at the same time, resulting in poor noise reduction effects. Utility Model Content

[0003] In view of the above-mentioned shortcomings in the existing technology, the purpose of this utility model is to provide a noise reduction structure for highway guardrails that has excellent noise reduction effect, strong impact resistance, long service life and easy maintenance.

[0004] The technical solution adopted by this utility model to achieve the above objectives is: a noise reduction structure for a highway guardrail, including a concrete base, a protective front rail, and a noise reduction component. The concrete base is buried in the ground, and the protective front rail is fixedly connected to the top surface of the concrete base near the highway. The noise reduction component is provided on the top surface of the concrete base away from the highway.

[0005] The noise reduction component includes a rear steel column, an outer sound-absorbing panel, a sound-absorbing cotton panel, and a sound-insulating back panel. Two sets of the rear steel columns are fixedly connected to the concrete base. Each set of the rear steel columns has three sets of mounting grooves on its corresponding surfaces. The outer sound-absorbing panel, the sound-absorbing cotton panel, and the sound-insulating back panel are slidably installed in the three sets of mounting grooves from the outside to the inside. A top sealing cover is fixedly connected to the top of the rear steel column, and an arc-shaped noise reduction plate is fixedly connected to the top sealing cover.

[0006] In the above technical solution, the protective front rail includes front steel columns and protective crossbeams. Two sets of the front steel columns are fixedly connected to the concrete base, and the protective crossbeams are fixedly connected between the two sets of front steel columns.

[0007] In the above technical solution, multiple sets of reinforcing beams are fixedly connected between the front steel column and the rear steel column.

[0008] In the above technical solution, a planting trough is provided on the concrete base between the protective front rail and the noise reduction component, and vegetation is planted in the planting trough.

[0009] In the above technical solution, the outer sound-absorbing panel includes a perforated sound-absorbing panel and an alkali-free hydrophobic glass cloth fixedly connected to the back of the perforated sound-absorbing panel.

[0010] In the above technical solution, the sound-absorbing cotton board includes a rock wool board and a PVC waterproof film covering the rock wool board.

[0011] In the above technical solution, the sound insulation back panel includes a steel plate and a damping sound insulation felt fixedly connected to the front of the steel plate.

[0012] In the above technical solution, the top sealing cover includes a metal shell and polyurethane foam filled inside the metal shell.

[0013] In the above technical solution, the front steel column, the rear steel column and the concrete base are integrated into a single structure.

[0014] The beneficial effects of this utility model are:

[0015] 1. This structure initially reduces noise through the outer layer of sound-absorbing panels (perforated sound-absorbing panels), allowing sound waves to enter. Then, the sound-absorbing cotton panels (rock wool panels) absorb mid-to-high frequency noise. Finally, the sound-insulating back panel (steel plate + damping sound insulation felt) blocks the transmission of low-frequency sound waves, thus forming a complete acoustic treatment chain from sound absorption to sound insulation. It covers a wide range of noise levels and has excellent noise reduction effect. The curved noise reduction panel at the top can further reflect and scatter sound waves that cross the barrier, enhancing the blocking effect against high-altitude noise.

[0016] 2. By pouring a concrete base inside the ground, and with both the front and rear steel columns being an integral structure with the concrete base, and the front and rear steel columns being connected by reinforcing beams, an overall rigid frame is formed, which has strong impact resistance.

[0017] 3. Planting vegetation between the protective front railing and the noise reduction components can absorb some of the noise, beautify the environment, and reduce visual oppression.

[0018] 4. The outer sound-absorbing panels, sound-absorbing cotton panels, and sound-insulating back panels are all slidably embedded through the mounting grooves, making them easy to disassemble, replace, or maintain individually, thus reducing later costs.

[0019] 5. Alkali-free water-repellent glass cloth is installed at the back of the perforated sound-absorbing panel, and the surface of the rock wool board is wrapped with a PVC waterproof film. This can prevent rainwater from eroding the rock wool board and extend its service life. The combination of damping sound insulation felt and steel plate in the sound insulation back panel has strong weather resistance and extends its service life. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is an exploded structural diagram of the present invention;

[0022] Figure 3 for Figure 2 Detailed structural diagram of part a;

[0023] Figure 4 This is a schematic diagram of the outer sound-absorbing panel structure in this utility model;

[0024] Figure 5 This is a schematic diagram of the sound-absorbing cotton board structure in this utility model;

[0025] Figure 6 This is a schematic diagram of the sound insulation back panel component in this utility model.

[0026] In the diagram: 100 Concrete base, 101 Planting trough, 200 Protective front rail, 201 Front steel column, 202 Protective crossbeam, 300 Noise reduction component, 301 Rear steel column, 302 Outer sound-absorbing panel, 3021 Perforated sound-absorbing panel, 3022 Alkali-free water-repellent glass cloth, 303 Sound-absorbing cotton panel, 3031 Rock wool board, 3032 PVC waterproof membrane, 304 Sound insulation back panel, 3041 Steel plate, 3042 Damping sound insulation felt, 305 Installation groove, 306 Top sealing cover, 307 Curved noise reduction panel, 400 Vegetation, 500 Reinforcing beam. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figure 1-6 A noise reduction structure for a highway guardrail includes a concrete base 100, a front guardrail 200, and a noise reduction component 300. The concrete base 100 is cast inside the ground, and the front guardrail 200 is fixedly connected to the top surface of the concrete base 100 near the highway. The front guardrail 200 includes front steel columns 201 and a protective beam 202. First, two sets of front steel columns 201 are fixedly connected to the concrete base 100 in an integral structure. That is, when the concrete base 100 is cast, the front steel columns 201 are directly cast and fixed. The protective beam 202 is fixedly connected between the two sets of front steel columns 201.

[0029] In addition, a noise reduction component 300 is provided on the top surface of the concrete base 100 away from the highway. The noise reduction component 300 includes a rear steel column 301, an outer sound-absorbing panel 302, a sound-absorbing cotton panel 303, and a sound-insulating back panel 304. That is, two sets of rear steel columns 301 are fixedly connected to the concrete base 100 in an integral structure. The rear steel columns 301 are also directly poured and fixed when the concrete base 100 is poured.

[0030] Each of the two sets of rear steel columns 301 has three sets of mounting slots 305 on corresponding surfaces. The outer sound-absorbing panel 302, sound-absorbing cotton panel 303, and sound-insulating back panel 304 are slidably installed in the three sets of mounting slots 305 from the outside to the inside, making the installation of the panels simple and convenient. More specifically, the outer sound-absorbing panel 302 includes a perforated sound-absorbing panel 3021 and an alkali-free water-repellent glass cloth 3022 fixedly connected to the back of the perforated sound-absorbing panel 3021. The sound-absorbing cotton panel 303 includes a rock wool board 3031 and a PVC waterproof film 3032 wrapped around the rock wool board 3031. The sound-insulating back panel 304 includes a steel plate 3041 and a damping sound-insulating felt 3042 fixedly connected to the front of the steel plate 3041. In this way, when noise is reduced... When noise is present, it can be absorbed and reduced by the perforated sound-absorbing board 3021, and then the mid-to-high frequency noise can be absorbed by the sound-absorbing cotton board 303 (rock wool board 3031). Finally, the low frequency sound wave transmission can be blocked by the sound insulation back panel 304 (steel plate 3041 + damping sound insulation felt 3042), thus forming a complete acoustic treatment chain from sound absorption to sound insulation, covering a wide range of noise and with excellent noise reduction effect. In addition, the alkali-free water-repellent glass cloth 3022 and the PVC waterproof film 3032 wrapped on the surface of the rock wool board 3031 can prevent rainwater from eroding the rock wool board 3031 and extend the service life of the rock wool board 3031. The combination of the damping sound insulation felt 3042 and the steel plate 3041 in the sound insulation back panel 304 has the characteristics of strong weather resistance and extended service life.

[0031] Furthermore, the top of the rear steel column is fixedly connected to a top sealing cover 306 by bolts. The top sealing cover 306 seals the top of the plate. The top sealing cover 306 includes a metal shell and polyurethane foam filled inside the metal shell. This gives the top sealing cover 306 a certain noise reduction effect. When it is necessary to replace the internal noise reduction plate, it is only necessary to remove the top sealing cover 306, and then slide out and install the plate to be replaced. Maintenance is simple and convenient.

[0032] Furthermore, an arc-shaped noise reduction plate 307 is fixedly connected to the top sealing cover 306. The arc-shaped noise reduction plate 307 can further reflect and scatter the sound waves that cross the barrier, thereby enhancing the blocking effect on high-altitude noise.

[0033] Furthermore, a planting trough 101 is provided on the concrete base 100 between the protective front railing 200 and the noise reduction component 300. Planting trough 101 is planted with vegetation 400, which can absorb some noise, beautify the environment, and reduce visual oppression.

[0034] In an optimized manner, multiple sets of reinforcing beams 500 are fixedly connected between the front steel column 201 and the rear steel column 301, forming an overall rigid frame with strong impact resistance.

[0035] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0036] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A noise reduction structure of a highway guardrail, comprising a concrete base (100), a guard front fence (200), a noise reduction assembly (300), characterized in that: The concrete base (100) is embedded in the ground, and the protective front fence (200) is fixedly connected to the top surface of the concrete base (100) near the road, and the noise reduction assembly (300) is arranged on the top surface of the concrete base (100) away from the road. The noise reduction assembly (300) comprises rear steel columns (301), outer sound-absorbing plate members (302), sound-absorbing cotton plate members (303), and sound-insulating back plate members (304). Two groups of rear steel columns (301) are fixedly connected to the concrete base (100), and three groups of installation grooves (305) are arranged on the corresponding surfaces of the two groups of rear steel columns (301). The outer sound-absorbing plate members (302), the sound-absorbing cotton plate members (303), and the sound-insulating back plate members (304) are sequentially and slidably installed in the three groups of installation grooves (305) from the outside to the inside. The top of the rear steel column (301) is fixedly connected with a top sealing cover (306), and the top sealing cover (306) is fixedly connected with an arc-shaped noise reduction plate (307).

2. The noise reduction structure of a highway guardrail according to claim 1, characterized in that: The protective front fence (200) comprises front steel columns (201) and a protective cross beam (202). Two groups of front steel columns (201) are fixedly connected to the concrete base (100), and the protective cross beam (202) is fixedly connected between the two groups of front steel columns (201).

3. The noise reduction structure of claim 2, wherein: A plurality of reinforcing beams (500) are fixedly connected between the front steel columns (201) and the rear steel columns (301).

4. The noise reduction structure of claim 1, wherein: A planting groove (101) is arranged between the protective front fence (200) and the noise reduction assembly (300) on the concrete base (100), and vegetation (400) is planted in the planting groove (101).

5. The noise reduction structure of a highway guardrail according to claim 1, wherein: The outer sound-absorbing plate member (302) comprises a perforated sound-absorbing plate (3021) and an alkali-free water-repellent glass cloth (3022) fixedly connected behind the perforated sound-absorbing plate (3021).

6. The noise reduction structure of a highway guardrail according to claim 1, wherein: The sound-absorbing cotton plate member (303) comprises a rock wool plate (3031) and a PVC waterproof film (3032) wrapped around the rock wool plate (3031).

7. The noise reduction structure of a highway guardrail according to claim 1, wherein: The sound-insulating back plate member (304) comprises a steel plate (3041) and a damping sound-insulating felt (3042) fixedly connected in front of the steel plate (3041).

8. The noise reduction structure of a highway guardrail according to claim 1, wherein: The top sealing cover (306) comprises a metal shell and polyurethane foam filled in the metal shell.

9. The noise reduction structure of a highway guardrail according to claim 2, characterized in that: The front steel columns (201) and the rear steel columns (301) are arranged in an integrated structure with the concrete base (100).

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