Urban road noise reduction device

Abstract

The utility model discloses an urban road noise reduction device, which belongs to the technical field of traffic noise treatment and comprises a road body, sound insulation and noise reduction components are arranged on two sides of the road body, two sound insulation barrier arc-shaped covers are centripetally arranged, and arc centers face the road body. An air bag noise reduction bag used for absorbing noise and reducing sound wave propagation vibration is bonded to the inner wall of each sound insulation barrier arc-shaped cover, a top noise reduction cover is further arranged between the top ends of the two sound insulation barrier arc-shaped covers, and a noise reduction and energy absorption assembly is arranged in the middle of the opposite side face of each sound insulation barrier plate. The two noise reduction and energy absorption assemblies each comprise a first noise reduction and sound absorption filter screen, and the two first noise reduction and sound absorption filter screens are located on the two sides of the road body correspondingly, so that vehicle noise in the road body is subjected to sound absorption and noise reduction through the first noise reduction and sound absorption filter screens, the air bag noise reduction bag and the top noise reduction cover. Noise can be effectively reflected and blocked, and the noise can be guided to enter the internal sound absorption assembly to be processed.

Description

Technical Field

[0001] This utility model belongs to the field of traffic noise treatment technology, and in particular, it is a device for reducing noise on urban roads. Background Technology

[0002] Noise pollution on urban roads is a common problem, especially in busy traffic areas. The noise generated by vehicles not only affects the quality of life of nearby residents, but may also have adverse effects on people's health.

[0003] Existing road noise reduction measures mainly include setting up sound barriers, installing sound-absorbing materials, and using green belts. However, these traditional methods have some limitations and shortcomings. For example, traditional sound barriers mainly rely on physical blocking to reflect noise. Although they can reduce noise transmission to some extent, they are not very effective at absorbing low- and mid-frequency noise. They often only focus on the physical isolation of noise and neglect further treatment of noise that has already entered the barrier (such as sound absorption and noise reduction), which allows noise to still penetrate or bypass the barrier and affect the surrounding environment.

[0004] A search revealed a Chinese patent publication number: CN217812781U, which describes a road construction noise barrier structure. The structure includes a noise barrier body and a fixing block. The top of the noise barrier body is curved. The fixing block is located at the top of the noise barrier body. A first clamping plate and a second clamping plate are slidably connected to the inner wall of the fixing block. A lead screw is rotatably connected to the inner wall of the fixing block. The lead screw passes through and is threaded to the inner walls of the first and second clamping plates. The two ends of the lead screw have opposite thread directions. The noise barrier body is located between the first and second clamping plates. A rotating shaft is rotatably connected to the inner wall of the fixing block, and a lighting lamp is fixed on the rotating shaft.

[0005] The patent documents cited above also have the same problem. Sound barriers mainly rely on physical blocking to reflect noise. Although they can reduce noise transmission to a certain extent, they are not effective at absorbing low- and mid-frequency noise. They often only focus on the physical isolation of noise and neglect to further process the noise that has entered the barrier (such as sound absorption and noise reduction), which means that noise can still penetrate or bypass the barrier and affect the surrounding environment. Utility Model Content

[0006] The purpose of this invention is to provide a device for reducing noise on urban roads to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a city road noise reduction device, comprising a road body, with sound insulation and noise reduction components arranged on both sides of the road body. Each sound insulation and noise reduction component includes symmetrically erected sound barrier panels on both sides of the road body and a sound barrier arc-shaped cover integrally connected to the top of each sound barrier panel. Both sound barrier arc-shaped covers are concentrically positioned with their arc centers facing the road body. Each sound barrier arc-shaped cover has an airbag noise reduction bag adhered to its inner wall for absorbing noise and reducing sound wave propagation vibration. A top noise reduction cover is also provided between the tops of the two sound barrier arc-shaped covers, positioned directly above the road body. Each sound barrier panel has a noise reduction and energy absorption component located at the center of one opposite side. Both noise reduction and energy absorption components include a first noise reduction and sound absorption filter. The two first noise reduction and sound absorption filters are respectively positioned on both sides of the road body, allowing vehicle noise in the road body to be absorbed and reduced through the first noise reduction and sound absorption filter, the airbag noise reduction bag, and the top noise reduction cover.

[0008] In a preferred embodiment of this scheme, the noise reduction and energy absorption assembly further includes a honeycomb sound-absorbing plate bonded to the back of each first noise reduction and sound-absorbing filter and a second noise reduction and sound-absorbing filter bonded to the side of the honeycomb sound-absorbing plate facing away from the first noise reduction and sound-absorbing filter, wherein the honeycomb sound-absorbing plate is located between the second noise reduction and sound-absorbing filter and the first noise reduction and sound-absorbing filter.

[0009] In a preferred embodiment of this scheme, each of the sound barrier panels has an integrally connected outer convex box body on its back side, and each of the sound barrier panels has an internal cavity for embedding and installing a first noise reduction and sound absorption filter, a honeycomb sound absorption panel and a second noise reduction and sound absorption filter, and the cavity is in communication with the outer convex box body.

[0010] In this preferred embodiment, each of the protruding box bodies has a detachable side cover bolted to its back and the inner wall of the cavity, and each of the second noise-reducing and sound-absorbing filters has a cross support rod glued to the side away from the honeycomb sound-absorbing panel.

[0011] In this preferred embodiment, the inner wall of the detachable side cover of the protruding box is fixed with a mounting base, and an electric push-pull rod is fixed on one side of the outer wall of the mounting base. The free end of the electric push-pull rod is fixedly connected to the second noise reduction and sound absorption filter.

[0012] In this preferred embodiment, each of the electric push-pull rods is fixed with a negative pressure pump on one side and on the other side of the outer wall of the mounting base. The extraction end of the negative pressure pump faces the second noise reduction and sound absorption filter, and the output end of the negative pressure pump is connected to an output pipe that passes through the adjacent detachable side cover.

[0013] In this preferred embodiment, the bottom four corners of the top noise reduction cover are each welded with a supporting column, and the supporting columns are fixed to the top outer wall of the two soundproof barrier arc covers.

[0014] In a preferred embodiment of this solution, the inner wall of the top noise reduction cover is provided with a top noise reduction component, which is used to reduce noise flowing out from between the two soundproof barrier arc covers.

[0015] In a preferred embodiment, the top noise reduction assembly includes a noise barrier top plate disposed on the upper part of the inner wall of the top noise reduction cover and multiple noise reduction and vibration damping springs symmetrically fixed to the surface of the noise barrier top plate. The top end of each noise reduction and vibration damping spring away from the noise barrier top plate is fixed to the inner top wall of the top noise reduction cover.

[0016] In this preferred embodiment, the bottom surface of the noise barrier top plate is embedded with a sound-absorbing foam board, and both outer walls of the noise barrier top plate are bonded with silicone shock-absorbing pads. When the noise barrier top plate is elastically pulled upward, the two silicone shock-absorbing pads elastically abut against the inner top wall of the top noise reduction cover.

[0017] Compared with the prior art, the technical effects and advantages of this utility model are as follows:

[0018] This urban road noise reduction device forms a three-dimensional noise blocking system by incorporating sound barrier panels, curved sound barrier covers, and a top noise-reducing cover. This design not only effectively reflects and blocks noise but also guides it into the internal sound-absorbing components for processing. Utilizing the characteristics of airbags to absorb noise, especially low-frequency noise, is rare in traditional noise reduction devices, thus improving the overall noise reduction effect.

[0019] The first noise-absorbing filter, the honeycomb sound-absorbing panel, and the second noise-absorbing filter constitute the noise-reducing and energy-absorbing assembly. Together, they provide highly efficient noise absorption and filtration capabilities. In particular, the first noise-absorbing filter mentioned in the claims, as a preliminary filtration layer, can intercept larger particles and initiate the noise reduction process, laying the foundation for subsequent, more refined noise reduction treatment. The negative pressure pump not only helps to concentrate noise processing but also draws in air, thus achieving air purification. This feature is not common in traditional noise reduction equipment, bringing environmental benefits while reducing noise on urban roads. Attached Figure Description

[0020] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2 This utility model Figure 1 Enlarged structural diagram at point A;

[0023] Figure 3 This is a schematic diagram of the disassembly structure of the noise barrier top plate of this utility model;

[0024] Figure 4 This is a schematic diagram of the noise reduction and energy absorption component of this utility model.

[0025] Explanation of reference numerals in the attached figures:

[0026] In the diagram: 1. Road body; 2. Sound barrier panel; 3. Sound barrier arc cover; 4. Outwardly protruding box; 5. Top noise reduction cover; 6. Detachable side cover; 7. Output pipe; 8. Sound insulation and noise reduction component; 9. Noise reduction and energy absorption component; 10. Top noise reduction component; 11. Airbag noise reduction bag; 12. Support column; 13. Noise barrier top plate; 14. Noise reduction and vibration damping spring; 15. Sound-absorbing foam board; 16. Silicone vibration damping pad; 17. First noise reduction and sound absorption filter; 18. Cross support rod; 19. Electric push-pull rod; 20. Negative pressure pump; 21. Mounting base; 22. Honeycomb sound-absorbing panel; 23. Second noise reduction and sound absorption filter. Detailed Implementation

[0027] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention can be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described in order to avoid confusion with the present invention.

[0028] Unless otherwise defined, the directions mentioned herein, such as up, down, left, right, front, back, inside, and outside, are based on the directions shown in the figures of this utility model, and are explained here together.

[0029] This embodiment provides, for example Figures 1 to 4The illustrated urban road noise reduction device includes a road body 1, with sound insulation and noise reduction components 8 arranged on both sides of the road body 1. The sound insulation and noise reduction components 8 include sound barrier panels 2 symmetrically erected on both sides of the road body 1 and sound barrier arc-shaped covers 3 integrally connected to the top of each sound barrier panel 2. The two sound barrier arc-shaped covers 3 are both arranged concentrically with their arc centers facing the road body 1. Each sound barrier arc-shaped cover 3 has an airbag noise reduction bag 11 bonded to its inner wall for absorbing noise and reducing sound wave propagation vibration. The airbag noise reduction bag 11 is bonded to the inner wall of the sound barrier arc-shaped cover 3, utilizing the characteristics of airbags to absorb and buffer noise, especially low-frequency noise, thereby improving noise reduction performance. A top noise reduction cover 5 is also provided between the tops of the two sound barrier arc covers 3. The top noise reduction cover 5 is positioned directly above the road body 1. Each sound barrier panel 2 has a noise reduction and energy absorption component 9 in the middle of one of its opposite sides. Both noise reduction and energy absorption components 9 include a first noise reduction and sound absorption filter 17. The two first noise reduction and sound absorption filters 17 are respectively located on both sides of the road body 1, so that vehicle noise in the road body 1 is absorbed and reduced by the first noise reduction and sound absorption filter 17, the airbag noise reduction bag 11, and the top noise reduction cover 5.

[0030] In this embodiment, the noise reduction and energy absorption component 9 further includes a honeycomb sound-absorbing plate 22 bonded to the back of each first noise reduction and sound-absorbing filter 17 and a second noise reduction and sound-absorbing filter 23 bonded to the side of the honeycomb sound-absorbing plate 22 facing away from the first noise reduction and sound-absorbing filter 17. The honeycomb sound-absorbing plate 22 is located between the second noise reduction and sound-absorbing filter 23 and the first noise reduction and sound-absorbing filter 17.

[0031] In this embodiment, each sound barrier panel 2 has an integrally connected outer convex box 4 on its back side. Each sound barrier panel 2 has a cavity inside for embedding and installing the first noise reduction and sound absorption filter 17, the honeycomb sound absorption panel 22 and the second noise reduction and sound absorption filter 23. The cavity is in communication with the outer convex box 4.

[0032] In this embodiment, each of the protruding box bodies 4 has a removable side cover 6 installed on its back and the inner wall of the cavity by bolts, and each of the second noise reduction and sound absorption filters 23 has a cross support rod 18 glued to the side away from the honeycomb sound absorption plate 22.

[0033] In this embodiment, a mounting base 21 is fixed to the inner wall of the detachable side cover 6 of the protruding box 4. An electric push-pull rod 19 is fixed to one side of the outer wall of the mounting base 21. The free end of the electric push-pull rod 19 is fixedly connected to the second noise-reducing and sound-absorbing filter 23. This allows the electric push-pull rod 19 to push the second noise-reducing and sound-absorbing filter 23, the honeycomb sound-absorbing panel 22, and the first noise-reducing and sound-absorbing filter 17 out of the chamber and extend to the outside of the sound barrier panel 2 near the road body 1, thereby increasing the contact area with noise and improving the noise reduction efficiency.

[0034] In this embodiment, a negative pressure pump 20 is fixed to one side of each electric push-pull rod 19 and the other side of the outer wall of the mounting base 21. The extraction end of the negative pressure pump 20 faces the second noise-reducing and sound-absorbing filter 23, and the output end of the negative pressure pump 20 is connected to an output pipe 7 that passes through the adjacent detachable side cover 6. This allows the negative pressure extraction end of the negative pressure pump 20 to absorb noise transmitted from the first noise-reducing and sound-absorbing filter 17, the honeycomb sound-absorbing panel 22, and the second noise-reducing and sound-absorbing filter 23. This not only allows the noise to be absorbed and concentrated at the first noise-reducing and sound-absorbing filter 17 for concentrated noise reduction and sound absorption, but also allows the negative pressure to extract air to filter dust, and the air is discharged from the output pipe 7. The first noise-reducing and sound-absorbing filter 17 is located in the noise-reducing and energy-absorbing assembly 9, serving as a preliminary filtration layer, intercepting larger particles and initiating the noise reduction process. The electric push-pull rod 19 is fixed to the mounting base 21 and can push the noise-reducing and energy-absorbing assembly 9 to extend and retract, adjusting the position of the noise-reducing assembly to adapt to different noise source positions or intensity changes. The honeycomb sound-absorbing panel 22 is located between the first noise-reducing sound-absorbing filter 17 and the second noise-reducing sound-absorbing filter 23, and has good sound absorption characteristics, effectively reducing noise transmission. The second noise-reducing sound-absorbing filter 23 is located on the side of the honeycomb sound-absorbing panel 22 facing away from the first noise-reducing sound-absorbing filter 17, and serves as the final filtration layer to further refine the noise reduction effect and ensure high-quality noise reduction results.

[0035] In this embodiment, support columns 12 are welded to the four corners of the bottom surface of the top noise reduction cover 5, and the support columns 12 are fixed to the top outer wall of the two sound insulation barrier arc covers 3.

[0036] In this embodiment, the inner wall of the top noise reduction cover 5 is provided with a top noise reduction component 10, which is used to reduce the noise flowing out from between the two soundproof barrier arc covers 3.

[0037] In this embodiment, the top noise reduction assembly 10 includes a noise barrier top plate 13 disposed on the upper part of the inner wall of the top noise reduction cover 5, and multiple noise reduction and vibration damping springs 14 symmetrically fixed to the surface of the noise barrier top plate 13. The top end of each noise reduction and vibration damping spring 14 away from the noise barrier top plate 13 is fixed to the inner top wall of the top noise reduction cover 5. The noise reduction and vibration damping springs 14 are fixed between the noise barrier top plate 13 and the top noise reduction cover 5 to help absorb vibration and noise and increase the system's vibration damping capability.

[0038] In this embodiment, a sound-absorbing foam board 15 is embedded in the bottom surface of the noise barrier top plate 13. The sound-absorbing foam board 15 is embedded in the bottom surface of the noise barrier top plate 13, effectively absorbing noise, especially high-frequency noise, and improving sound quality. Silicone damping pads 16 are adhered to both outer walls of the noise barrier top plate 13. When the noise barrier top plate 13 is elastically pulled upwards, the two silicone damping pads 16 elastically abut against the inner top wall of the top noise reduction cover 5. The sound-absorbing foam board 15 is used to absorb and reduce noise, and the noise-reducing and vibration-damping spring 14 pulls the noise barrier top plate 13. The combined use of the noise-reducing and vibration-damping spring 14 and the silicone damping pads 16 helps to buffer and dampen sound waves, thereby reducing noise.

[0039] Working principle:

[0040] This urban road noise reduction device works by first introducing noise from vehicles traveling on the road surface 1 into the sound barrier panels 2. These panels form a physical barrier, effectively reflecting and blocking some of the noise. The curved cover 3 of the sound barrier is located on top of the sound barrier panels 2 and positioned concentrically to further contain the noise and guide it to the sound-absorbing material inside.

[0041] Once noise is guided into the curved cover 3 of the sound barrier, it first comes into contact with the airbag noise reduction bags 11. These airbags can absorb noise energy, especially low-frequency noise. The surface of the airbag noise reduction bags 11 may experience slight vibrations, but these vibrations are suppressed by the curved cover 3 of the sound barrier and the sound-absorbing material on it.

[0042] As noise continues to propagate, it encounters the noise reduction and energy absorption component 9. This component includes a first noise reduction and sound absorption filter 17, a honeycomb sound-absorbing panel 22, and a second noise reduction and sound absorption filter 23, which sequentially filter and absorb the noise. The first noise reduction and sound absorption filter 17 acts as a preliminary filtration layer, capturing larger particles and initiating the noise reduction process; the honeycomb sound-absorbing panel 22 provides additional sound absorption capacity, while the second noise reduction and sound absorption filter 23 ensures that the final fine particles and high-frequency noise are processed. An electric push-pull rod 19 is installed inside the protruding housing 4 and connected to the noise reduction and energy absorption component 9. As needed, the electric push-pull rod 19 can push or retract the noise reduction and energy absorption component 9 to adapt to different noise source locations or intensity changes, thereby optimizing the noise reduction effect. A negative pressure pump 20 is fixed inside the protruding housing 4, with its extraction end facing the second noise reduction and sound absorption filter 23. When the negative pressure pump 20 is activated, it creates a negative pressure inside the noise reduction and energy absorption component 9, causing noise and dust to be drawn in and discharged through the output pipe 7.

[0043] During this process, the noise is concentrated at the first noise reduction and sound absorption filter 17 for centralized noise reduction and sound absorption. At the same time, the negative pressure air extraction also plays a role in purifying the air. The filtered clean air is discharged from the output pipe 7.

[0044] For noise that cannot be completely controlled, the top noise-canceling enclosure 5 and its internal top noise-canceling assembly 10 provide a last line of defense. The top noise-canceling assembly 10 consists of a noise barrier top plate 13, noise-canceling and vibration-damping springs 14, sound-absorbing foam panels 15, and silicone vibration-damping pads 16. The sound-absorbing foam panels 15 absorb high-frequency noise, the noise-canceling and vibration-damping springs 14 help buffer vibrations, and the silicone vibration-damping pads 16 prevent noise leakage, ensuring comprehensive noise control.

[0045] The support columns 12 are welded to the four corners of the bottom surface of the top noise reduction cover 5, providing stable support for the entire top noise reduction cover 5, ensuring its structural strength, and enabling the top noise reduction component 10 to work effectively without being disturbed by external factors.

[0046] It should be noted that, in this document, relational terms such as "one" and "two" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0047] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A noise reduction device for urban roads, comprising a road body (1), characterized in that: Sound insulation and noise reduction components (8) are provided on both sides of the road body (1). The sound insulation and noise reduction components (8) include sound barrier panels (2) symmetrically erected on both sides of the road body (1) and sound barrier arc covers (3) integrally connected to the top of each sound barrier panel (2). The two sound barrier arc covers (3) are both concentrically arranged with the arc center facing the road body (1). The inner wall of each sound barrier arc cover (3) is bonded with an airbag noise reduction bag (11) for absorbing noise and reducing sound wave propagation vibration. The tops of the two sound barrier arc covers (3) are connected together. A top noise reduction cover (5) is also provided, which is located directly above the road body (1). Each of the sound barrier panels (2) is provided with a noise reduction and energy absorption component (9) at the middle position of one side. Both noise reduction and energy absorption components (9) include a first noise reduction and sound absorption filter (17). The two first noise reduction and sound absorption filters (17) are respectively located on both sides of the road body (1), so that the vehicle noise in the road body (1) is absorbed and reduced by the first noise reduction and sound absorption filter (17), the airbag noise reduction bag (11) and the top noise reduction cover (5).

2. The urban road noise reduction device according to claim 1, characterized in that: The noise reduction and energy absorption assembly (9) further includes a honeycomb sound-absorbing plate (22) bonded to the back of each first noise reduction and sound-absorbing filter (17) and a second noise reduction and sound-absorbing filter (23) bonded to the side of the honeycomb sound-absorbing plate (22) facing away from the first noise reduction and sound-absorbing filter (17). The honeycomb sound-absorbing plate (22) is located between the second noise reduction and sound-absorbing filter (23) and the first noise reduction and sound-absorbing filter (17).

3. The urban road noise reduction device according to claim 2, characterized in that: Each of the sound barrier panels (2) has an integrally connected outer convex box (4) on its back side. Each of the sound barrier panels (2) has a cavity inside for embedding and installing the first noise reduction and sound absorption filter (17), the honeycomb sound absorption panel (22) and the second noise reduction and sound absorption filter (23). The cavity is in communication with the outer convex box (4).

4. The urban road noise reduction device according to claim 3, characterized in that: Each of the protruding box bodies (4) has a removable side cover (6) bolted to its back and the inner wall of the cavity, and each of the second noise reduction and sound absorption filters (23) has a cross support rod (18) glued to the side away from the honeycomb sound absorption panel (22).

5. The urban road noise reduction device according to claim 4, characterized in that: The inner wall of the detachable side cover (6) of the protruding box (4) is fixed with an installation base (21), and an electric push-pull rod (19) is fixed on one side of the outer wall of the installation base (21). The free end of the electric push-pull rod (19) is fixedly connected to the second noise reduction and sound absorption filter (23).

6. The urban road noise reduction device according to claim 5, characterized in that: Each of the electric push-pull rods (19) is fixed with a negative pressure pump (20) on one side and on the other side of the outer wall of the mounting base (21). The extraction end of the negative pressure pump (20) faces the second noise reduction and sound absorption filter (23), and the output end of the negative pressure pump (20) is connected to an output pipe (7) that passes through the adjacent detachable side cover (6).

7. The urban road noise reduction device according to claim 6, characterized in that: The bottom of the top noise reduction cover (5) is welded with support columns (12) at the four corners, and the support columns (12) are fixed to the top outer wall of the two sound barrier arc covers (3).

8. The urban road noise reduction device according to claim 7, characterized in that: The inner wall of the top noise reduction cover (5) is provided with a top noise reduction component (10), which is used to reduce noise flowing out from between the two sound barrier arc covers (3).

9. A noise reduction device for urban roads according to claim 8, characterized in that: The top noise reduction assembly (10) includes a noise barrier top plate (13) disposed on the upper part of the inner wall of the top noise reduction cover (5) and multiple noise reduction and shock absorption springs (14) symmetrically fixed on the surface of the noise barrier top plate (13). The top end of each noise reduction and shock absorption spring (14) away from the noise barrier top plate (13) is fixed on the inner top wall of the top noise reduction cover (5).

10. A noise reduction device for urban roads according to claim 9, characterized in that: The bottom surface of the noise barrier top plate (13) is embedded with a sound-absorbing foam board (15). Both sides of the outer wall of the noise barrier top plate (13) are bonded with silicone shock-absorbing pads (16). When the noise barrier top plate (13) is elastically pulled upward, the two silicone shock-absorbing pads (16) elastically abut against the inner top wall of the top noise reduction cover (5).

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