Composite sound absorption and insulation screen body
By using a composite sound-absorbing and sound-insulating barrier structure, and by adjusting the sound wave path with an air pump-controlled air push rod and a corrugated noise reduction plate, and by combining a porous aluminum plate and a rubber plate to form an airtight space, the problem of insufficient sound insulation and sound absorption of existing sound barriers when the frequency changes is solved, and multi-frequency noise is effectively reduced.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NANJING NINGTONG INTELLIGENT TRANSPORTATION TECH RES INST CO LTD
- Filing Date
- 2025-06-18
- Publication Date
- 2026-07-21
AI Technical Summary
Existing sound barriers are difficult to effectively insulate and absorb sound according to changes in noise frequency. In particular, their high-frequency sound absorption is poor when low-frequency sound has strong penetrating power, which fails to meet actual usage requirements.
The composite sound-absorbing and sound-insulating barrier structure includes components such as a support base, a fixed frame, a cylinder, an air pump, an air push rod, a corrugated noise reduction plate, and a perforated aluminum plate. The length of the air push rod is controlled by the air pump, and the distance between the corrugated noise reduction plate and the perforated aluminum plate is adjusted. Combined with a rubber plate and a concrete plate, an airtight space is formed. A sound level meter is used to monitor the sound frequency and adjust the working mode to achieve sound wave absorption and reflection control at different frequencies.
It enables dynamic adjustment of sound wave path and contact time based on noise frequency changes, enhances the absorption of mid-to-high frequency sound waves and the dissipation of mid-to-low frequency sound waves, reduces noise propagation intensity, and meets the sound insulation requirements of multi-frequency environments.
Smart Images
Figure CN224532417U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of sound insulation and noise reduction panels, specifically a composite sound absorption and insulation screen. Background Technology
[0002] With the rapid development of modern industry, transportation, and urban construction, noise pollution has become an increasingly serious environmental problem. Sound waves generated by various noise sources seriously affect people's work, life, and health. Composite sound-absorbing and sound-insulating barriers are acoustic baffles that combine sound absorption and sound insulation functions. They are used to block and absorb noise and are widely used in transportation, industry, construction, and other fields. By installing these acoustic baffles in urban roads, parks, buildings, and other places, noise pollution can be effectively reduced, environmental quality can be improved, and people's living experience can be enhanced.
[0003] In daily life, the frequency range of noise is very wide. From dawn to daytime and then to night, the frequency of sound changes with the social environment, gradually transitioning from low frequency to mid-high frequency and then back to mid-low frequency. However, most sound barriers on the market are made of a single material. Since low-frequency sound has strong penetrating power, if they are designed specifically to block low-frequency noise, their effect on high-frequency sound absorption is often poor. Therefore, existing sound barriers cannot effectively insulate and absorb sound according to these frequency changes and cannot meet the needs of actual use.
[0004] Therefore, we provide a composite sound-absorbing and sound-insulating barrier. Utility Model Content
[0005] The main purpose of this utility model is to provide a composite sound-absorbing and sound-insulating barrier that can effectively solve the problem mentioned in the background art that, due to the strong penetrating power of low-frequency sounds, if they are specially designed to block low-frequency noise, their effect on high-frequency sound absorption is not good. Therefore, existing sound barriers are difficult to effectively insulate and absorb sound according to these frequency changes and cannot meet the needs of actual use.
[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A composite sound-absorbing and sound-insulating barrier includes a support base, on which a fixing frame for assembling the panels is fixedly installed. The support base has an installation groove inside, and a cylinder for storing and transporting gas and an air pump are respectively fixedly installed on the left and right sides of the installation groove. An air pipe for connecting the cylinder and the air pump is provided between them. A composite sound-insulating panel is fitted and fixedly installed on one side of the fixing frame, and air push rods for spacing adjustment are fitted and fixedly installed at the four corners of the composite sound-insulating panel. A corrugated noise-reducing panel is fixedly installed on the other side of the air push rod, and the corrugated noise-reducing panel is airtightly fitted to the inner wall of the fixing frame.
[0007] In the above scheme, preferably, fixing plates are fixedly installed on both sides of the fixing frame, and fixing rods that are fixedly inserted into the ground are attached to both sides of the fixing frame, and the fixing plates and fixing rods are fixedly connected by fitting fixing bolts.
[0008] In the above scheme, preferably, a sound level meter for sound decibel and frequency detection is fixedly installed on the upper part of the fixed frame, and the sound level meter is electrically connected to the air pump. A porous aluminum plate with a perforated through-hole structure is fitted and fixedly installed on the other side of the fixed frame, and noise-reducing cotton for sound absorption is fixedly attached to the inner wall of the porous aluminum plate.
[0009] In the above scheme, preferably, the composite sound insulation board includes a rubber sheet, and the outer surface of the rubber sheet is tightly fitted to the inner wall of the fixed frame. The rubber sheet is provided with an air pipe that is connected to the air push rod.
[0010] In the above scheme, preferably, the rubber plate is used to reduce low-frequency sound, and the air pipe inside the rubber plate is connected to the air pump below through the air pipe. A concrete plate for supporting the load and reducing mid-to-low frequency sound is fixedly installed on one side of the rubber plate.
[0011] In the above scheme, preferably, the air actuator includes a fixed rod that is fixedly installed in the four corners of the composite sound insulation board, and the fixed rod is connected to the air pipe. The fixed rod is fitted with a telescopic rod, and the other side of the telescopic rod is fixedly connected to the four corners of the corrugated noise reduction board.
[0012] Compared with the prior art, the present invention has the following beneficial effects: This composite sound-absorbing and insulating barrier incorporates a structure consisting of a corrugated noise-reducing panel, a pneumatic actuator, and a perforated aluminum plate. By adjusting the length of the pneumatic actuator, the distance between the corrugated noise-reducing panel and the perforated aluminum plate can be controlled. When the corrugated noise-reducing panel and the perforated aluminum plate are close together, the sound propagation path is shortened, and mid-to-high frequency sound waves are easily absorbed directly by the sound-absorbing panel, reducing reflection energy. The corrugated structure of the noise-reducing panel disperses the sound waves, and the noise-reducing cotton and the corrugated noise-reducing panel further absorb the sound waves, thereby reducing the propagation intensity of high-frequency sound. When the corrugated noise-reducing panel and the perforated aluminum plate are far apart, low-frequency sound waves are reflected multiple times between them, prolonging the contact time with the sound-absorbing panel, enhancing the dissipation of mid-to-low frequency sound waves, and thus reducing the propagation of low-frequency sound.
[0013] This type of composite sound-absorbing and insulating barrier, by setting up a corrugated noise-reducing plate, a pneumatic push rod, and a rubber plate, etc., when the gas in the cylinder is operated by the air pump and enters the air pipe through the air pipe and is input into the fixed rod, it pushes out the internal telescopic rod, thereby pushing the corrugated noise-reducing plate closer to the porous aluminum plate. At the same time, the rubber plate, the corrugated noise-reducing plate and the fixed frame form a vacuum-like negative pressure environment to further reduce the intensity of sound propagation at different frequencies. Attached Figure Description
[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0016] Figure 2 This is a schematic diagram of the internal structure of the support base in this utility model.
[0017] Figure 3 This is a schematic diagram showing the disassembled structure of the porous aluminum plate and the noise-reducing cotton in this utility model.
[0018] Figure 4 This is a schematic diagram of the connection structure between the air pipe and the rubber plate in this utility model.
[0019] Figure 5 This utility model Figure 4 A magnified schematic diagram of the local structure at point A.
[0020] Figures 1-5 In the middle: 1. Support base; 2. Fixing rod; 3. Perforated aluminum plate; 301. Noise-reducing cotton; 4. Fixing frame; 401. Fixing plate; 5. Sound level meter; 6. Fixing bolt; 7. Mounting slot; 8. Cylinder; 9. Air pipe; 10. Air pump; 11. Corrugated noise-reducing board; 12. Air push rod; 1201. Fixing rod; 1202. Telescopic rod; 13. Composite sound insulation board; 1301. Rubber plate; 1302. Concrete board. Detailed Implementation
[0021] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.
[0022] like Figures 1-5As shown, in this embodiment, a composite sound-absorbing and sound-insulating screen includes a support base 1, a fixed frame 4 for assembling the panels is fixedly installed on the support base 1, an installation groove 7 is provided inside the support base 1, and a cylinder 8 for storing gas and a gas pump 10 for gas delivery are fixedly installed on the left and right sides of the installation groove 7 respectively. An air pipe 9 for connecting the cylinder 8 and the air pump 10 is provided between them. A composite sound-insulating panel 13 is fitted and fixedly installed on one side of the fixed frame 4, and air push rods 12 for spacing adjustment are fitted and fixedly installed at the four corners of the composite sound-insulating panel 13. A corrugated noise reduction panel 11 is fixedly installed on the other side of the air push rod 12, and the corrugated noise reduction panel 11 is airtightly fitted to the inner wall of the fixed frame 4. Specifically, with this setup, during use, the support base 1 serves as the overall structure for support, the fixed frame 4 is used to assemble the various panels to form a frame structure, and the cylinder 8 in the mounting slot 7 is used to store gas so that when the air pump 10 is operating, the gas is delivered through the air pipe 9, thereby causing the air pump 10 to operate to input or extract gas into the air push rod 12 for extension and retraction adjustment, thereby adjusting the distance between the corrugated noise reduction plate 11 and the porous aluminum plate 3 and the composite sound insulation plate 13.
[0023] like Figures 1-3 As shown, in this embodiment, fixing plates 401 are fixedly installed on both sides of the fixing frame 4, and fixing rods 2 that are fixedly inserted into the ground are attached to both sides of the fixing frame 4. The fixing plates 401 and the fixing rods 2 are fixedly connected by fixing bolts 6. A sound level meter 5 for sound decibel and frequency detection is fixedly installed on the top of the fixing frame 4. The sound level meter 5 is electrically connected to the air pump 10. A porous aluminum plate 3 with a perforated through-hole structure is fixedly installed on the other side of the fixing frame 4. Noise-reducing cotton 301 for sound absorption is fixedly attached to the inner wall of the porous aluminum plate 3. Specifically, with this setup, during use, the fixing rod 2 is fitted and fixed to the fixing plates 401 on both sides of the fixing frame 4 using fixing bolts 6, thereby fixing the entire unit to the ground. The sound level meter 5 above the fixing frame 4 monitors the sound decibels and frequencies in the environment, and its internal processor analyzes the sound decibels and frequencies. When the sound frequency is low, mid-low, or high, the processor sends the corresponding control signal to the air pump 10, and the control switch inside the air pump 10 controls the corresponding working mode to change the length of the air push rod 12, thereby adjusting the ripple noise reduction. The distance between the corrugated noise reduction plate 11 and the porous aluminum plate 3 varies. When the corrugated noise reduction plate 11 is close to the porous aluminum plate 3, the sound propagation path is shortened, and mid-to-high frequency sound waves are easily absorbed directly by the sound-absorbing plate, reducing reflection energy. The sound waves are also dispersed by the corrugated structure of the corrugated noise reduction plate 11 and absorbed by the noise reduction cotton 301 and the corrugated noise reduction plate 11, thereby reducing the propagation intensity of high-frequency sound. When the corrugated noise reduction plate 11 is far from the porous aluminum plate 3, low-frequency sound waves are reflected multiple times between the two, prolonging the contact time with the sound-absorbing plate, enhancing the dissipation of mid-to-low frequency sound waves, and thus reducing the propagation of low-frequency sound.
[0024] like Figures 3-5 As shown, in this embodiment, the composite sound insulation board 13 includes a rubber plate 1301, and the outer surface of the rubber plate 1301 is tightly fitted to the inner wall of the fixed frame 4. The rubber plate 1301 is provided with an air pipe that is connected to the air push rod 12. The rubber plate 1301 is used to reduce low-frequency sound, and the air pipe in the rubber plate 1301 is connected to the air pump 10 below through the air pipe 9. A concrete plate 1302 for supporting the load and reducing mid-low frequency sound is fixedly fitted to one side of the rubber plate 1301. The air push rod 12 includes a fixed rod 1201 fixedly installed in the four corners of the composite sound insulation board 13, and the fixed rod 1201 is connected to the air pipe. The fixed rod 1201 is fitted with a telescopic rod 1202, and the other side of the telescopic rod 1202 is fixedly connected to the four corners of the corrugated noise reduction board 11. Specifically, with this setup, during use, the rubber plate 1301 and the concrete plate 1302 form the basic sound insulation structure, and the concrete plate 1302 is attached to the inner wall of the fixed frame 4 to form a gas-sealed space. The corrugated noise reduction plate 11 is also airtightly attached to the inner wall of the fixed frame 4. When the gas in the cylinder 8 is pumped into the air pipe through the air pipe 9 and input into the fixed rod 1201 under the operation of the air pump 10, it pushes out the internal telescopic rod 1202, thereby pushing... The corrugated noise reduction plate 11 moves closer to the porous aluminum plate 3, and at the same time, a vacuum-like negative pressure environment is formed by the rubber plate 1301, the corrugated noise reduction plate 11 and the fixed frame 4 to further reduce the intensity of sound propagation at different frequencies. When the air pump 10 operates to extract the gas from the fixed rod 1201, the telescopic rod 1202 retracts into the fixed rod 1201, so that the corrugated noise reduction plate 11 moves away from the porous aluminum plate 3, forming different sound insulation effects. At the same time, the gas is recovered and enters the cylinder 8 for reuse.
[0025] Working principle: The entire structure is supported by the support base 1. The various panels are assembled through the fixed frame 4 to form a frame structure. The cylinder 8 in the mounting slot 7 stores gas so that the air pump 10 can deliver gas through the air pipe 9 during operation. The operation of the air pump 10 inputs or extracts gas into the air push rod 12 for extension and retraction adjustment, thereby adjusting the distance between the corrugated noise reduction plate 11, the porous aluminum plate 3, and the composite sound insulation plate 13. The fixing rod 2 is fitted and fixed to the fixing plates 401 on both sides of the fixed frame 4 by the fixing bolts 6 to ensure that the overall structure is firmly fixed to the ground. The sound level meter 5 is installed on the fixed frame 4. Above the fixed frame 4, a device monitors the decibels and frequencies of sound in the environment and analyzes this data through its internal processor. When the sound frequency is low, mid-low, or high, the processor sends a corresponding control signal to the air pump 10. The air pump 10 then adjusts the working mode via a control switch, changing the length of the air push rod 12, which in turn adjusts the distance between the corrugated noise reduction plate 11 and the perforated aluminum plate 3. When the corrugated noise reduction plate 11 is close to the perforated aluminum plate 3, the sound propagation path is shortened, and mid-to-high frequency sound waves are more easily absorbed by the sound-absorbing plate, reducing reflection energy. The corrugated structure of the corrugated noise reduction plate 11 disperses the sound waves. The sound insulation structure, composed of rubber sheet 1301 and concrete sheet 1302, and the bonding between concrete sheet 1302 and the inner wall of fixed frame 4, forms a gas-sealed space. The sound insulation structure, composed of rubber sheet 1301 and concrete sheet 1302, and the bonding between concrete sheet 1302 and the inner wall of fixed frame 4, are airtightly bonded. The corrugated noise reduction sheet 11 is airtightly bonded to the inner wall of fixed frame 4. The movable setting allows the gas in cylinder 8 to be pumped by air pump 10. When the air enters the air pipe through the air pipe 9 and is input into the fixed rod 1201 under the drive, the telescopic rod 1202 is pushed out, pushing the corrugated noise reduction plate 11 closer to the porous aluminum plate 3. At the same time, the rubber plate 1301, the corrugated noise reduction plate 11 and the fixed frame 4 form a vacuum negative pressure environment, further reducing the propagation intensity of sound at different frequencies. When the air pump 10 runs and extracts the gas from the fixed rod 1201, the telescopic rod 1202 retracts into the fixed rod 1201, making the corrugated noise reduction plate 11 move away from the porous aluminum plate 3, forming different sound insulation effects. The gas is recovered and enters the cylinder 8 for easy reuse.
[0026] It should be noted that the sound level meter 5 is mainly used here to monitor changes in sound in the environment, analyze the dynamic characteristics of sounds with different distributions and frequencies in real time, and adjust the working mode of the air pump 10 through a preset algorithm. This is existing technology and will not be elaborated on here. Its model number is AWA5688.
[0027] The preferred embodiments of the present invention disclosed above are merely illustrative of the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to specific implementations. The present invention is not limited to the above embodiments; the embodiments and descriptions in the specification are merely outlining the principles of the present invention. Various changes and modifications can be made to the present invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.
Claims
1. A composite sound-absorbing and sound-insulating screen, comprising a supporting base (1), characterized in that: A fixed frame (4) for assembling the plates is fixedly installed on the support base (1). The support base (1) has an installation groove (7) inside. A cylinder (8) for gas storage and gas transportation and an air pump (10) for gas transportation are fixedly installed on the left and right sides of the installation groove (7) respectively. An air pipe (9) for connecting the cylinder (8) and the air pump (10) is provided between them. A composite sound insulation board (13) is fitted and fixedly installed on one side of the fixed frame (4). Air push rods (12) for spacing adjustment are fitted and fixedly installed at the four corners of the composite sound insulation board (13). A corrugated noise reduction board (11) is fixedly installed on the other side of the air push rod (12). The corrugated noise reduction board (11) is tightly fitted to the inner wall of the fixed frame (4).
2. The composite sound-absorbing and sound-insulating barrier according to claim 1, characterized in that, Fixing plates (401) are fixedly installed on both sides of the fixing frame (4), and fixing rods (2) that are fixedly inserted into the ground are attached to both sides of the fixing frame (4), and the fixing plates (401) and the fixing rods (2) are fixedly connected by fixing bolts (6) that are fitted together.
3. The composite sound-absorbing and sound-insulating barrier according to claim 1, characterized in that, A sound level meter (5) for sound decibel and frequency detection is fixedly installed on the top of the fixed frame (4), and the sound level meter (5) is electrically connected to the air pump (10). A porous aluminum plate (3) with a porous through structure is fitted and fixedly installed on the other side of the fixed frame (4), and a noise reduction cotton (301) for sound absorption is fixedly fitted to the inner wall of the porous aluminum plate (3).
4. The composite sound-absorbing and sound-insulating barrier according to claim 1, characterized in that, The composite sound insulation board (13) includes a rubber plate (1301), and the outer surface of the rubber plate (1301) is tightly fitted to the inner wall of the fixed frame (4). The rubber plate (1301) is provided with an air pipe that is connected to the air push rod (12).
5. A composite sound-absorbing and sound-insulating screen according to claim 4, characterized in that, The rubber plate (1301) is used to reduce low-frequency sound, and the air pipe inside the rubber plate (1301) is connected to the air pump (10) below through the air pipe (9). A concrete plate (1302) for supporting the load and reducing mid-to-low frequency sound is fixedly installed on one side of the rubber plate (1301).
6. A composite sound-absorbing and sound-insulating barrier according to claim 4, characterized in that, The pneumatic actuator (12) includes a fixed rod (1201) fixedly installed in the four corners of the composite sound insulation board (13), and the fixed rod (1201) is connected to the air pipe. The fixed rod (1201) is fitted with a telescopic rod (1202) inside each fixed rod (1201), and the other side of the telescopic rod (1202) is fixedly connected to the four corners of the corrugated noise reduction board (11).