Composite modified sound absorption panel

Abstract

This utility model relates to the field of sound absorption technology, particularly to a composite modified sound-absorbing panel, comprising: a panel body, protrusions, locking holes, and latches. Multiple protrusions are slidably arranged on the panel body, and multiple locking holes are provided on any two adjacent sides of the panel body. Multiple latches are provided on the other two adjacent sides of the panel body, and the locking holes and latches between different panels cooperate to lock and fix them in place. By sliding the protrusions up and down, sound waves of different magnitudes are absorbed. This invention solves the problem that existing sound-absorbing structures cannot maximize the sound absorption and vibration reduction effect, and cannot effectively reduce noise and vibration of different magnitudes. It achieves that the sound-absorbing panel can maximize sound absorption and vibration reduction, and can effectively reduce noise and vibration of different magnitudes.

Description

Technical Field

[0001] This utility model relates to the field of sound absorption technology, and in particular to composite modified sound absorption panels. Background Technology

[0002] As the core system of urban rail transit, the subway relies on electric traction to achieve high-capacity and rapid transportation. Its route layout is flexible, with underground tunnels predominating in central urban areas, while suburban areas combine elevated highways and surface lines to create a three-dimensional transportation network. However, while efficiently alleviating urban passenger flow, the vibration and noise problems generated by subway operation are becoming increasingly prominent.

[0003] Current mainstream subway tunnel retaining wall structures mainly focus on the selection of sound-absorbing materials and the application of vibration reduction technologies. However, these traditional solutions generally have performance bottlenecks and are difficult to maximize the sound absorption and vibration reduction effects. Furthermore, the noise and vibration generated will change depending on the subway's operating speed, making it difficult to fundamentally improve the environmental impact of subway operation on surrounding buildings and residents. Utility Model Content

[0004] The technical objective of this invention is to solve the problem that existing sound-absorbing structures cannot maximize the sound absorption and vibration reduction effect, and cannot reduce noise and vibration of different magnitudes; and to realize that the sound-absorbing panel can maximize sound absorption and vibration reduction, and can reduce noise and vibration of different magnitudes.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0006] A composite modified sound-absorbing panel includes: a panel body, protrusions, locking holes, and latches. Multiple protrusions are slidably arranged on the panel body. Multiple locking holes are opened on any two adjacent sides of the panel body. Multiple latches are arranged on the other two adjacent sides of the panel body. The locking holes and latches between different panels cooperate with each other to lock and fix them. By sliding the protrusions up and down, sound waves of different sizes are absorbed.

[0007] In a preferred embodiment of the composite modified sound-absorbing panel of this utility model, the surface of the protrusion is a curved structure, and the bottom of the protrusion is a rectangular structure.

[0008] As a preferred embodiment of the composite modified sound-absorbing panel of this utility model, the bottom of the protrusion is provided with a plurality of through holes in a linear array.

[0009] As a preferred embodiment of the composite modified sound-absorbing panel of this utility model, the panel body is provided with a plurality of rectangular grooves, and the rectangular grooves slide in cooperation with the rectangular structure at the bottom of the protrusion.

[0010] As a preferred embodiment of the composite modified sound-absorbing panel of this utility model, a lightweight tension spring is provided in each of the plurality of rectangular grooves.

[0011] As a preferred embodiment of the composite modified sound-absorbing panel of this utility model, the rectangular grooves on the panel are of different sizes, and the sizes of the multiple corresponding protrusions are also different.

[0012] As a preferred embodiment of the composite modified sound-absorbing panel of this utility model, an arc-shaped groove is provided between adjacent protrusions on the panel body, and the size of the plurality of arc-shaped grooves is different.

[0013] As a preferred embodiment of the composite modified sound-absorbing panel of this utility model, the panel body has multiple fine holes inside, and the multiple fine holes form a honeycomb structure, and the honeycomb fine holes inside the panel body are a flexible structure.

[0014] As a preferred embodiment of the composite modified sound-absorbing panel of this utility model, the latch has cavities on both sides, and compression springs are respectively provided inside the two cavities, with sliding blocks provided on the two compression springs.

[0015] In a preferred embodiment of the composite modified sound-absorbing panel of this utility model, the sliding block has a trapezoidal structure, and the inclined surface of the trapezoidal sliding block faces outward.

[0016] The beneficial effects of this utility model are:

[0017] 1. This utility model has a plate and a protrusion. Through the cooperation between the plate and the protrusion, the protrusion can move from the inside of the plate to the outside according to the external air pressure difference, thereby increasing the area of ​​the protrusion. This greatly increases the effective surface area of ​​the sound-absorbing plate exposed to sound waves, more effectively absorbing and attenuating sound wave energy and reducing sound reflection.

[0018] 2. This utility model has through holes provided by protrusions and honeycomb-shaped fine holes provided inside the plate. Through the through holes and fine holes, sound waves can be effectively absorbed, greatly reducing sound reflection. At the same time, the honeycomb structure inside the plate is a flexible structure, which can effectively buffer and absorb the generated vibrations, thereby improving the vibration reduction effect.

[0019] 3. This utility model has locking holes and latches around the perimeter of the panel. By cooperating with the locking holes and latches between different panels, multiple panels can be quickly assembled and spliced, which greatly improves the installation efficiency of the sound-absorbing panel. Attached Figure Description

[0020] Figure 1This is a schematic diagram of the overall three-dimensional structure in an embodiment of this disclosure.

[0021] Figure 2 This is a three-dimensional structural diagram of the protrusion in an embodiment of this disclosure.

[0022] Figure 3 This is a three-dimensional structural diagram of the plate body in an embodiment of this disclosure.

[0023] Figure 4 This is a cross-sectional view of the overall embodiment of this disclosure.

[0024] Figure 5 This is a cross-sectional view of the latch in an embodiment of this disclosure.

[0025] Reference numerals: 1. Plate; 11. Rectangular groove; 12. Fine hole; 13. Lightweight tension spring; 14. Arc-shaped groove; 2. Protrusion; 21. Through hole; 3. Lock hole; 4. Lock; 41. Cavity; 42. Compression spring; 43. Sliding block. Detailed Implementation

[0026] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0027] like Figures 1 to 5 As shown, the composite modified sound-absorbing panel includes: a panel body 1, protrusions 2, locking holes 3, and latches 4. Multiple protrusions 2 are slidably arranged on the panel body 1. Multiple locking holes 3 are opened on any two adjacent sides of the panel body 1. Multiple latches 4 are arranged on the other two adjacent sides of the panel body 1. The locking holes 3 and latches 4 between different panels 1 cooperate with each other to lock and fix them. By sliding the protrusions 2 up and down, sound waves of different sizes are absorbed.

[0028] The core structure of the composite modified sound-absorbing panel consists of four parts: panel 1, protrusions 2, locking holes 3, and latches 4. Panel 1 serves as the main frame and is made of a special composite modified material, which combines high strength and good acoustic performance. Multiple sets of protrusions 2 are slidably arranged on the surface of panel 1. These protrusions 2 can slide flexibly along the vertical direction of panel 1, providing a dynamic adjustment basis for the sound absorption function.

[0029] In the construction of the panel 1, locking holes 3 are provided on any two adjacent sides, and corresponding locking buckles 4 are provided on the other two adjacent sides. The locking holes 3 and locking buckles 4 between different panels 1 achieve a tight fit through a unique bevel interlocking design. During installation, simply align the locking buckle 4 with the locking hole 3 and gently push it in to complete the quick and firm locking and fixing, effectively avoiding the loosening problem that may occur in traditional splicing methods, and greatly improving installation efficiency and structural stability.

[0030] When sound waves act on the plate 1, the protrusion 2 will move outward on the plate 1 according to the external air pressure difference. Through this dynamic adjustment mechanism, the composite modified sound-absorbing plate can efficiently absorb sound waves of different intensities and significantly improve the noise reduction effect.

[0031] like Figure 2 As shown, the surface of the bump 2 is a curved structure, and the bottom of the bump 2 is a rectangular structure.

[0032] The surface of bump 2 features a unique curved structure. This design effectively increases the reflection path and scattering angle of sound waves, causing multiple reflections and refractions on the surface of bump 2, further improving energy loss and absorption efficiency. Simultaneously, the curved structure reduces directional reflection of sound waves, avoiding the formation of obvious focused sound areas and resulting in a more uniform sound absorption effect. The bottom of bump 2 has a rectangular structure, ensuring its stability and precision during sliding. It also allows for a tight fit with the rectangular groove 11 on plate 1, providing reliable guidance and support for the sliding of bump 2. Furthermore, the rectangular bottom structure effectively disperses the stress generated on bump 2 under load, improving its resistance to deformation and extending its service life. This results in bump 2 achieving optimal sound absorption performance and structural stability.

[0033] like Figure 2 As shown, the bottom of the protrusion 2 has a linear array of multiple through holes 21.

[0034] Multiple through holes 21 are regularly arranged at the bottom of the protrusion 2. The layout of these through holes 21 ensures that sound waves can generate optimal interference and dissipation effects when passing through them. The inner wall of each through hole 21 is roughened to further enhance the reflection and absorption of sound waves. When sound waves are transmitted from the surface of the plate 1 to the bottom of the protrusion 2, they will undergo multiple refractions and frictions along the path of the through holes 21, so that the sound energy is fully dissipated in this process. At the same time, the linear array of through holes 21 can also effectively reduce the weight of the protrusion 2 itself, ensuring its flexible sliding performance on the plate 1 without affecting the structural strength, thus achieving a dual improvement in sound absorption efficiency and mechanical performance.

[0035] like Figure 3 As shown, the plate 1 has multiple rectangular grooves 11, and the rectangular grooves 11 slide in cooperation with the rectangular structure at the bottom of the protrusion 2.

[0036] Multiple rectangular grooves 11 are evenly distributed on the surface of the plate 1 to ensure a perfect sliding fit with the rectangular structure at the bottom of the protrusion 2. The inner wall of the rectangular groove 11 is specially treated to achieve a mirror surface roughness of Ra0.8, which reduces the friction of the protrusion 2 during sliding and ensures its stability during sliding, preventing the sound absorption effect from being affected by shaking.

[0037] The depth and width design of the rectangular groove 11 provides sufficient sliding space for the protrusion 2 while ensuring the connection strength between the two. This allows the protrusion 2 to slide smoothly when dealing with air pressure changes caused by subway operation, enabling dynamic adjustment of the sound absorption function, and also enhancing the reliability and durability of the entire sound-absorbing panel structure.

[0038] like Figure 4 As shown, lightweight tension springs 13 are provided in the plurality of rectangular grooves 11.

[0039] When changes in the external environment cause protrusion 2 to slide, the tension spring will undergo elastic deformation: when the strong air pressure difference generated by the high-speed operation of the subway causes protrusion 2 to move outward, the tension spring is linearly stretched; and when the air pressure returns to normal, the tension spring uses its own elastic potential energy to reset protrusion 2. This not only allows protrusion 2 to self-adjust, but also effectively absorbs the mechanical vibration caused by rapid sliding through the buffering effect of the tension spring, avoiding the generation of secondary noise, and ensuring that the sound-absorbing panel maintains stable and efficient noise reduction performance during dynamic adjustment.

[0040] like Figure 3 As shown, the rectangular grooves 11 on the plate 1 are of different sizes, and the sizes of the multiple corresponding protrusions 2 are also different.

[0041] Each rectangular groove 11 is designed with different dimensions, and its length, width, and depth parameters are precisely set based on acoustic theory and actual test data. These rectangular grooves 11 vary in size, forming a gradient structural array. Correspondingly, the external dimensions of the multiple protrusions 2 also follow a specific diameter variation rule, with large rectangular grooves 11 matching large protrusions 2, and small rectangular grooves 11 fitting small protrusions 2, ensuring a perfect fit between the protrusions 2 and the rectangular grooves 11.

[0042] The large protrusion 2 and its matching rectangular groove 11 can generate a more significant resonance effect when low-frequency sound waves are applied, efficiently absorbing low-frequency energy; while the small protrusion 2, in conjunction with the small rectangular groove 11, focuses on the reflection and dissipation of high-frequency sound waves. Through the coordinated operation of the large and small protrusions 2, the sound-absorbing panel can cover a wider range of sound wave frequencies, achieving efficient noise reduction for both the low-frequency rumble generated by subway operation and the high-frequency noise emitted by mechanical equipment.

[0043] like Figure 4 As shown, an arc-shaped groove 14 is provided between adjacent protrusions 2 on the plate 1, and the size of the multiple arc-shaped grooves 14 is different.

[0044] An arc-shaped groove 14 structure is designed between adjacent protrusions 2 on the surface of plate 1, which can produce a special reflection and scattering effect on sound waves. The arc-shaped grooves 14 at different positions show significant differences in size.

[0045] These varying-sized arc-shaped grooves 14 and protrusions 2 form a complementary sound-absorbing system. Furthermore, the asymmetrical layout of the arc-shaped grooves 14 breaks the resonance condition of sound waves, further enhancing the noise reduction bandwidth of the sound-absorbing panel. This allows the sound-absorbing panel to cope with both high-frequency whistling sounds and low-frequency booming sounds in complex acoustic environments such as subway tunnels, maximizing noise reduction across the entire frequency range.

[0046] like Figure 4 As shown, the plate 1 has multiple fine holes 12 inside, and the multiple fine holes 12 form a honeycomb structure. The honeycomb fine holes 12 inside the plate 1 are a flexible structure.

[0047] The interior of the plate 1 contains thousands of micropores 12 arranged in a hexagonal honeycomb array, forming a highly symmetrical three-dimensional structure with excellent mechanical properties. The pore size of the honeycomb micropores 12 is precisely controlled, ranging from 0.5 to 2 millimeters, which effectively reduces the material's weight.

[0048] When external sound waves enter the fine holes 12, the reciprocating motion of air within the channels generates friction with the flexible hole walls, further dissipating sound energy. Simultaneously, the synergistic effect of the multiple reflective surfaces of the honeycomb structure and the flexible hole walls creates complex reflection paths for the sound waves within the plate 1, greatly enhancing the sound absorption effect. Furthermore, the flexible honeycomb structure also possesses excellent buffering performance, effectively absorbing the mechanical vibrations generated by subway operation.

[0049] like Figure 5 As shown, the latch 4 has cavities 41 on both sides, and compression springs 42 are respectively installed inside the two cavities 41, and sliding blocks 43 are installed on the two compression springs 42.

[0050] The latch 4 has cavities 41 on both sides. Each cavity 41 is equipped with a compression spring 42 and a sliding block 43. The sliding block 43 and the cavity 41 cooperate with each other to achieve mutual locking between different plates 1.

[0051] When the latch 4 is inserted into the lock hole 3, the inclined surface of the sliding block 43 first contacts the edge of the lock hole 3. As the insertion depth increases, the inclined surface is pushed by force to compress the spring 42 into the cavity 41, converting the external force into the elastic potential energy of the spring. When the latch 4 is fully in place, the compressed spring 42 quickly releases energy, pushing the sliding block 43 outward, so that its wedge-shaped structure is tightly locked into the groove on the side wall of the lock hole 3, forming a firm mechanical engagement.

[0052] like Figure 1 and Figure 5 As shown, the sliding block 43 has a trapezoidal structure, and the inclined surface of the trapezoidal sliding block 43 faces outward.

[0053] The trapezoidal sliding block 43 has its inclined surface arranged at a 30° angle facing outwards. This is to ensure that during the insertion of the latch 4, it forms a smooth guide slope with the edge of the lock hole 3, reducing insertion resistance and enabling easy installation with one hand. After full insertion, the inclined surface and the inner wall of the lock hole 3 form a stable wedge-tightening effect.

[0054] During installation, multiple plates 1 need to be assembled. The latch 4 on one plate 1 is inserted into the lock hole 3 on another plate 1. As the latch 4 is inserted, the inclined surface of the sliding block 43 on the latch 4 will contact the edge of the lock hole 3 and apply pressure to the plate 1. The sliding block 43 will enter the cavity 41, and the compression spring 42 inside the cavity 41 will be compressed. When the latch 4 is fully inserted into the lock hole 3, the sliding block 43 will move outward due to the elastic potential energy of the compression spring 42, thereby locking and fixing the plate 1.

[0055] In actual use, as the subway runs in the tunnel, the air velocity outside the plate 1 will vary due to the different speeds of the subway. When the subway speed is too fast, the air velocity between the subway and the plate 1 is faster, thus generating a large air pressure difference. This causes the protrusion 2 to slide outward in the rectangular groove 11. As the protrusion 2 moves outward, the lightweight tension spring 13 at the bottom of the protrusion 2 will be stretched, causing multiple protrusions 2 on the plate 1 to move outward. The area of ​​the protrusion 2 increases, which greatly increases the effective surface area of ​​the sound-absorbing plate exposed to sound waves, more effectively absorbing and attenuating sound wave energy and reducing sound reflection.

[0056] Meanwhile, the through holes 21 inside the protrusion 2 and the fine holes 12 on the plate 1 further enhance the sound absorption effect, greatly improving the noise reduction effect of the sound-absorbing panel. The honeycomb-shaped fine holes 12 inside the plate 1 can buffer and absorb the generated vibrations. When the external air pressure decreases, the protrusion 2 will return to its original position by compressing the elastic potential energy of the spring 42.

[0057] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model's technical solution. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the content of the present utility model's technical solution shall still fall within the scope of the present utility model's technical solution.

Claims

1. A composite modified acoustic panel, characterized by, include: The plate (1), protrusions (2), lock holes (3) and latches (4) are provided. Multiple protrusions (2) are slidably arranged on the plate (1). Multiple lock holes (3) are opened on any two adjacent sides of the plate (1). Multiple latches (4) are provided on the other two adjacent sides of the plate (1). The lock holes (3) and latches (4) between different plates (1) cooperate with each other to lock and fix them. By sliding the protrusions (2) up and down, sound waves of different sizes are absorbed.

2. The composite modified acoustic panel of claim 1, wherein: The surface of the bump (2) is a curved structure, and the bottom of the bump (2) is a rectangular structure.

3. The composite modified acoustic panel of claim 1, wherein: The bottom of the protrusion (2) has a linear array of multiple through holes (21).

4. The composite modified acoustic panel of claim 1, wherein: The plate (1) has multiple rectangular grooves (11) and the rectangular grooves (11) slide and cooperate with the rectangular structure at the bottom of the protrusion (2).

5. The composite modified acoustic panel of claim 4, wherein: Lightweight tension springs (13) are provided in the plurality of rectangular grooves (11).

6. The composite modified acoustic panel of claim 5, wherein: The rectangular grooves (11) on the plate (1) are of different sizes, and the corresponding protrusions (2) are also of different sizes.

7. The composite modified acoustic panel of claim 1, wherein: An arc-shaped groove (14) is provided between adjacent protrusions (2) on the plate (1), and the multiple arc-shaped grooves (14) are of different sizes.

8. The composite modified acoustic panel of claim 1, wherein: The plate (1) has multiple fine holes (12) inside, and the multiple fine holes (12) form a honeycomb structure. The honeycomb-shaped fine holes (12) inside the plate (1) are a flexible structure.

9. The composite modified acoustic panel of claim 1, wherein: The latch (4) has cavities (41) on both sides, and compression springs (42) are respectively installed inside the two cavities (41), and sliding blocks (43) are installed on the two compression springs (42).

10. The composite modified acoustic panel of claim 9, wherein: The sliding block (43) has a trapezoidal structure, and the inclined surface of the trapezoidal sliding block (43) faces outward.

Images