Soundproofing and sound-absorbing metal sound barrier

Abstract

The utility model discloses a metal sound barrier of sound insulation and sound absorption concretely relates to sound cover technical field, including sound insulation cover main part, the sound insulation cover main part inside assembly has sound insulation subassembly, and the sound insulation subassembly contains fixedly arranged inboard lining frame in sound insulation cover main part, and the end face detachable connection of inboard lining frame towards noise incident side has the sound-absorbing board. The utility model discloses a plurality of sound guide grooves that are arranged on the sound-absorbing board can directly guide and shunt the incident sound wave, disperse the sound wave that can gather originally to different directions, reduce the sound wave superposition interference. Meanwhile, the sound-absorbing board adopts porous sound-absorbing material, and a part of the shunted sound wave directly enters the board body interstice, is converted into heat energy consumption through the friction, damping effect, and the other part is further absorbed by the subsequent structure after being guided through the sound guide groove, avoids the sound wave gathering from the double dimensions of shunting and absorption, and significantly optimizes the sound insulation and sound absorption performance.

Description

Technical Field

[0001] This utility model relates to the field of soundproof cover technology, and more specifically, to a soundproof and sound-absorbing metal sound barrier. Background Technology

[0002] In the control of road traffic noise, the installation of sound barriers has always been a primary means of noise control. Compared with other noise control methods, sound barriers are located close to the noise source, are easy to construct, and involve a small area, making them the main means of controlling and improving traffic noise. According to environmental protection requirements, to reduce the impact of traffic facility noise on the surrounding environment, such as in areas like hospitals, schools, residential areas, and libraries, sound barriers need to be installed around these facilities.

[0003] Among them, patent CN214883102U discloses a road noise barrier, including at least one set of noise barrier units. The noise barrier unit includes a noise barrier panel and H-shaped steel columns located on both sides of the noise barrier panel. The noise barrier panel includes a foamed aluminum panel on the front side and a metal back panel on the rear side, with a back cavity between the metal back panel and the foamed aluminum panel. The noise barrier panel is vertically inserted into the flanges of the H-shaped steel columns on both sides, and the thickness of the noise barrier panel matches the flange width of the H-shaped steel columns. A fastening device is provided between the metal back panel of the noise barrier panel and the flanges of the H-shaped steel columns. The front facade of the noise barrier unit is provided with horizontally arranged foamed aluminum sound-absorbing strips that protrude from the front facade at intervals. When using this structure, the width of the sound barrier panels can be adjusted according to the actual project. During installation, the H-shaped steel columns are first fixed according to the size of the sound barrier panels. Then, one or more sound barrier panels are inserted from the top of the H-shaped steel columns and arranged in order from top to bottom until they are installed to the specified height. After that, the sound barrier panels are fastened with fastening devices. However, this structure is not easy to divert sound waves during use and can easily cause sound waves to gather together, resulting in poor sound insulation. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a sound-insulating and sound-absorbing metal sound barrier, which aims to solve the problems mentioned in the background art.

[0005] This utility model provides the following technical solution: a sound-insulating and sound-absorbing metal sound barrier, comprising a sound-insulating cover body, wherein a sound-insulating component is assembled inside the sound-insulating cover body; The sound insulation component includes an inner lining frame fixedly installed inside the main body of the sound insulation cover. A sound-absorbing plate is detachably connected to the end face of the inner lining frame facing the noise incident side. The sound-absorbing plate is made of porous sound-absorbing material, and several parallel sound-guiding grooves are opened on the surface of the sound-absorbing plate away from the inner lining frame. The sound-guiding grooves extend along the height direction of the sound-absorbing plate. The top edge of the sound-absorbing plate is provided with a horizontally arranged first clamping plate. The length of the first clamping plate is adapted to the width of the sound-absorbing plate, and the two ends of the first clamping plate are respectively vertically integrally formed with second clamping plates, which are respectively attached to the two end faces of the sound-absorbing plate.

[0006] Optionally, in one possible implementation, the inner lining frame is a rectangular hollow frame structure, and reinforcing corner plates are fitted at each of the four right-angled corners of the inner lining frame. The reinforcing corner plates are right-angled triangular steel plates, the lengths of which are adapted to the width of the frame of the inner lining frame. At least two through bolt holes are provided on each of the two right-angled sides of the reinforcing corner plates, and the reinforcing corner plates are detachably connected to the frame of the inner lining frame by fastening bolts passing through the bolt holes. At least one connecting bolt hole is also provided in the middle of the hypotenuse of the reinforcing corner plates, and the reinforcing corner plates are detachably connected to the inner sidewall of the soundproof cover body by connecting bolts passing through the connecting bolt holes. Optionally, in one possible implementation, rubber pads are adhered to both end faces of the sound-absorbing plate near the second clamping plate, and the rubber pads on the sound-absorbing plate and the rubber pads on the second clamping plate are in close contact; both second clamping plates are arranged vertically, and two locking blocks are fixedly connected to the end face of each second clamping plate away from the sound-absorbing plate, and the two locking blocks are arranged vertically along the height direction of the second clamping plate; the locking block is a rectangular block structure, and a threaded hole is opened at the end away from the second clamping plate; the locking block is detachably connected to the frame of the inner lining frame by locking bolts adapted to the threaded hole; two vertically arranged baffles are also provided between the second clamping plate and the sound-absorbing plate, and the two baffles are located on both sides of the sound-absorbing plate; Each of the partitions is rotatably connected to a door via a hinge at its bottom. The size of the door is adapted to the size of the opening at the bottom of the partition, and a latch structure for locking the door is provided on the side of the door away from the hinge. The technical effects and advantages of this utility model are as follows: The sound-guiding grooves on the sound-absorbing panel can directly guide and divert the incident sound waves, dispersing the sound waves that might otherwise converge to different directions and reducing sound wave superposition interference. At the same time, the sound-absorbing panel uses porous sound-absorbing material. After diversion, part of the sound waves directly enters the pores of the panel and is converted into heat energy through friction and damping. The other part is further absorbed by the subsequent structure after being guided by the sound-guiding grooves. This dual approach of diversion and absorption avoids sound wave convergence and significantly optimizes sound insulation and absorption performance.

[0007] The inner lining frame is a rectangular frame, and the reinforcing corner plates at its corners are detachably connected to the inner lining frame and the main body of the soundproof cover by bolts. This not only prevents the inner lining frame from deforming due to external forces such as wind load and vibration, but also allows the inner lining frame and the main body of the soundproof cover to form a stable whole, avoiding secondary noise caused by structural loosening. The first clamping plate horizontally limits the top of the sound-absorbing plate, and two vertical second clamping plates clamp it from both sides. They are then connected to the inner lining frame by bolts through locking blocks, which can firmly fix the sound-absorbing plate and prevent displacement during long-term use that could lead to sound insulation failure. Attached Figure Description

[0008] To more clearly illustrate the technical solutions in this disclosure, the accompanying drawings used in some embodiments will be briefly described below. Obviously, the drawings described below are only drawings of some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings. In addition, the drawings described below can be regarded as schematic diagrams and are not intended to limit the actual size of the product, the actual flow of the method, the actual timing of the signals, etc. involved in the embodiments of this disclosure.

[0009] Figure 1 This is a front view of the overall structure of this utility model.

[0010] Figure 2 This is a side view of the overall structure of this utility model.

[0011] Figure 3 This is a schematic diagram of the first clamping plate, the second clamping plate, and the locking block of this utility model.

[0012] Figure 4 This is a schematic diagram of the inner lining frame, sound-absorbing plate, rubber pad, reinforcing corner plate, and soundproof cover of this utility model.

[0013] The attached diagram is labeled as follows: 1. Soundproof cover body; 2. Inner lining frame; 3. Sound-absorbing plate; 4. Sound guide groove; 5. First clamping plate; 6. Second clamping plate; 7. Locking block; 8. Door body; 9. Partition plate; 10. Reinforcing corner plate; 11. Rubber pad. Detailed Implementation

[0014] 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.

[0015] This embodiment discloses a sound-insulating and sound-absorbing metal sound barrier, which aims to solve the problem that existing sound barriers are not easy to divert sound waves and are prone to sound wave concentration, resulting in poor sound insulation effect. The specific settings are as follows.

[0016] Specifically, as shown in the attached document Figure 1 Appendix Figure 2 Appendix Figure 3 Appendix Figure 4 As shown, the sound-insulating and sound-absorbing metal sound barrier includes a soundproof cover body 1. The soundproof cover body 1 serves as the external load-bearing structure of the entire sound barrier and is made of high-strength metal, possessing excellent wind load resistance and corrosion resistance, enabling it to operate stably for extended periods in complex outdoor environments. Inside the soundproof cover body 1, a sound-insulating component is installed, which is the core part for achieving the sound insulation and sound absorption functions.

[0017] The sound insulation component includes an inner lining frame 2 disposed within the main body 1 of the sound insulation enclosure, as shown in the attached diagram. Figure 4 As shown, the inner frame 2 is a rectangular frame structure made of lightweight alloy material, effectively reducing the overall weight while ensuring structural strength. To further enhance the structural stability of the inner frame 2 and prevent deformation due to external forces during long-term use, reinforcing corner plates 10 are installed at each corner of the inner frame 2. The reinforcing corner plates 10 are made of high-strength steel plates and are bolted to the inner frame 2. The reinforcing corner plates 10 and the soundproof enclosure body 1 are also detachably connected by bolts. This connection method not only facilitates installation and subsequent maintenance and replacement, but also forms a stable connection structure between the inner frame 2 and the soundproof enclosure body 1, improving the overall impact resistance.

[0018] A sound-absorbing plate 3 is provided on one side of the inner frame 2. The sound-absorbing plate 3 is made of porous sound-absorbing material with a large number of tiny pores inside, which can realize the conversion and consumption of sound energy by utilizing the friction and damping effect of sound waves. (See attached image) Figure 4 As shown, several sound-guiding grooves 4 are formed on the sound-absorbing plate 3, which can more efficiently guide and divert the incident sound waves, preventing sound waves from accumulating on the surface of the sound-absorbing plate 3. When the sound waves propagate to the sound-absorbing plate 3, part of the sound waves directly enter the internal pores of the sound-absorbing plate 3 and are absorbed, while the other part of the sound waves are guided to different directions through the sound-guiding grooves 4, reducing the superposition and interference of sound waves, thereby improving the overall sound absorption effect.

[0019] As attached Figure 3 As shown, a first clamping plate 5 is provided on one side of the top of the sound-absorbing plate 3. The first clamping plate 5 is horizontally positioned and used to fix and limit the top of the sound-absorbing plate 3. A second clamping plate 6 is provided at both ends of the first clamping plate 5. The two second clamping plates 6 are vertically positioned and are integrally formed with the first clamping plate 5, forming a U-shaped clamping structure. This structure can fix the sound-absorbing plate 3 from the top and both sides from all directions, preventing the sound-absorbing plate 3 from shifting during use.

[0020] To prevent vibration noise caused by rigid contact between the sound-absorbing plate 3 and the second clamping plate 6, and to enhance the sealing performance between them to prevent sound waves from penetrating through gaps, rubber pads 11 are respectively provided on the sound-absorbing plate 3 and the second clamping plate 6, as shown in the attached figure. Figure 4 As shown, the rubber pads 11 of each sound-absorbing plate 3 abut against the second clamping plate 6. The rubber pads 11 are made of nitrile rubber with good elasticity, which has excellent sealing performance and shock absorption effect, effectively blocking sound transmission through gaps, and at the same time reducing vibration transmission between the sound-absorbing plate 3 and the second clamping plate 6.

[0021] As attached Figure 3 As shown, each of the second clamping plates 6 is provided with two locking blocks 7, which are detachably connected to the inner lining frame 2 by bolts. The locking block 7 is a block structure, with one side welded and fixed to the second clamping plate 6, and the other side tightly connected to the inner lining frame 2 by bolts. By adjusting the tightness of the bolts, the clamping force of the second clamping plate 6 on the sound-absorbing plate 3 can be further enhanced, ensuring that the sound-absorbing plate 3 maintains a stable installation state during long-term use.

[0022] In addition, two baffles 9 are provided between the second clamping plate 6 and the sound-absorbing plate 3, as shown in the attached figure. Figure 2 As shown, the baffle 9 is vertically installed and parallel to the sound-absorbing plate 3 and the second clamping plate 6. The baffle 9 is made of metal sheet with excellent sound insulation properties, which can divide the space between the second clamping plate 6 and the sound-absorbing plate 3 into multiple independent sound-insulating chambers, further enhancing the sound insulation effect. A door 8 is installed at the bottom of each baffle 9, and the door 8 is connected to the baffle 9 by hinges, allowing for free opening and closing. The door 8 facilitates regular access for staff to the space formed by the baffle 9, the sound-absorbing plate 3, and the second clamping plate 6 to inspect, clean, and maintain components such as the sound-absorbing plate 3 and the rubber pad 11, ensuring the long-term stable sound insulation and absorption performance of the sound barrier. The specific working principle is as follows: When traffic noise is generated and propagates to the metal sound barrier, it first comes into contact with the soundproof cover body 1, which can block a portion of the noise from directly penetrating. The unblocked noise enters the soundproof cover body 1 and propagates to the sound-absorbing plate 3. The sound-guiding grooves 4 on the sound-absorbing plate 3 divert and guide the incident noise, preventing it from accumulating on the surface of the sound-absorbing plate 3. Part of the noise enters the porous structure inside the sound-absorbing plate 3 through the sound-guiding grooves 4. In the pores, after multiple reflections, friction, and damping, the sound energy is converted into heat energy and consumed, achieving a sound absorption effect. Another part of the noise is blocked by the baffle plate 9. The independent soundproof chamber formed by the baffle plate 9, the sound-absorbing plate 3, and the second clamping plate 6 further blocks and reflects the noise, extending the propagation path of the noise inside the sound barrier and increasing the consumption of sound energy. Simultaneously, the rubber pad 11 effectively blocks sound transmission through the gap between the sound-absorbing plate 3 and the second clamping plate 6, while the reinforcing corner plate 10 and locking block 7 ensure the structural stability of the entire soundproofing assembly, preventing secondary noise caused by structural vibration. Through the synergistic effect of the above-mentioned multiple sound insulation and sound absorption structures, the propagation of traffic noise is effectively reduced, providing a good acoustic environment for the surrounding area.

[0023] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A sound-insulating and sound-absorbing metal sound barrier, comprising a soundproof cover body (1), characterized in that: The soundproof cover body (1) is equipped with soundproof components inside; The sound insulation component includes an inner lining frame (2) fixedly installed inside the sound insulation cover body (1). The end face of the inner lining frame (2) facing the noise incident side is detachably connected to a sound-absorbing plate (3). The sound-absorbing plate (3) is made of porous sound-absorbing material, and a number of parallel sound-guiding grooves (4) are opened on the side surface of the sound-absorbing plate (3) away from the inner lining frame (2). The sound-guiding grooves (4) extend along the height direction of the sound-absorbing plate (3). The top edge of the sound-absorbing plate (3) is provided with a horizontally arranged first clamping plate (5). The length of the first clamping plate (5) is adapted to the width of the sound-absorbing plate (3), and the two ends of the first clamping plate (5) are respectively vertically integrally formed with second clamping plates (6). The two second clamping plates (6) are respectively attached to the two end faces of the sound-absorbing plate (3).

2. The sound-insulating and sound-absorbing metal sound barrier according to claim 1, characterized in that: The inner frame (2) is a rectangular hollow frame structure, and reinforcing corner plates (10) are attached to the four right-angle corners of the inner frame (2). The reinforcing corner plates (10) are right-angled triangular steel plates, and the lengths of their two right-angled sides are adapted to the width of the frame of the inner frame (2).

3. The sound-insulating and sound-absorbing metal sound barrier according to claim 2, characterized in that: The reinforcing angle plate (10) has at least two through bolt holes on each of its two right-angled sides. The reinforcing angle plate (10) is detachably connected to the frame of the inner lining frame (2) by fastening bolts passing through the bolt holes. The reinforcing angle plate (10) also has at least one connecting bolt hole in the middle of its hypotenuse. The reinforcing angle plate (10) is detachably connected to the inner wall of the soundproof cover body (1) by connecting bolts passing through the connecting bolt holes.

4. The sound-insulating and sound-absorbing metal sound barrier according to claim 1, characterized in that: The sound-absorbing plate (3) has rubber pads (11) glued to both ends of the second clamping plate (6), and the rubber pads (11) on the sound-absorbing plate (3) and the rubber pads (11) on the second clamping plate (6) are in close contact.

5. A sound-insulating and sound-absorbing metal sound barrier according to claim 1, characterized in that: Both second clamping plates (6) are arranged vertically, and each second clamping plate (6) has two locking blocks (7) fixedly connected to the side face away from the sound-absorbing plate (3). The two locking blocks (7) are arranged vertically along the height direction of the second clamping plate (6). The locking block (7) is a rectangular block structure, and a threaded hole is opened at the end away from the second clamping plate (6). The locking block (7) is detachably connected to the frame of the inner lining frame (2) by locking bolts that are adapted to the threaded hole.

6. The sound-insulating and sound-absorbing metal sound barrier according to claim 1, characterized in that: Two vertically arranged baffles (9) are also provided between the second clamping plate (6) and the sound-absorbing plate (3), and the two baffles (9) are located on both sides of the sound-absorbing plate (3); Each of the partitions (9) has a door (8) rotatably connected to its bottom via a hinge. The size of the door (8) is adapted to the size of the opening at the bottom of the partition (9), and a latching structure for locking the door (8) is provided on the side of the door (8) away from the hinge.

Images