Bridge noise reduction protection sound insulation board

Abstract

The utility model discloses a bridge noise reduction protection sound insulation plate which comprises a fixed bottom plate and a noise reduction plate. Mounting holes are formed in the two fixing bottom plates in an array mode, fixing shafts are arranged in the middles of the upper surfaces of the fixing bottom plates, shaft sleeves are rotationally connected to the upper ends and the lower ends of the outer arc surfaces of the fixing shafts, limiting grooves are formed in the sides, away from the fixing shafts, of the shaft sleeves, and inserting strips are inserted into the two opposite limiting grooves; a protective frame is arranged on the front side between the two insertion strips; the noise reduction plate is arranged on the rear side between the two insertion strips, each insertion strip comprises a T-shaped frame, a spring and a T-shaped sliding plate, the T-shaped frames are inserted into the two opposite limiting grooves respectively, and the T-shaped sliding plates are slidably connected into the T-shaped frames. Interference of noise to surrounding residents is reduced, and practicability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of sound insulation boards, in particular to a bridge noise reduction and protection sound insulation board. Background Art

[0002] Sound insulation board is a plate that acts as a sound insulation effect. There are building sound insulation and structure sound insulation classification. Sound insulation board can not block all frequencies of sound. Objects have inherent resonance frequency. The sound insulation effect of sound insulation board is significantly reduced for sounds close to the resonance frequency of the object. Sound insulation board is divided into air sound insulation and vibration sound insulation. Air sound insulation board is a board that blocks the sound propagating in the air. Vibration sound insulation board is a board and system that blocks the sound propagating in rigid components. The existing sound insulation board has a simple structure and does not use a variety of sound insulation materials and sound absorbing materials in combination. The sound insulation effect is limited, the noise reduction effect is not ideal, and the structural strength is small. The protection function is weak when the car hits. In addition, the existing sound insulation board is inconvenient to adjust the angle and has no buffering function. The installation position needs to be accurately calculated during installation, which reduces the installation efficiency. For this reason, we propose a bridge noise reduction and protection sound insulation board. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the existing defects and provide a bridge noise reduction and protection sound insulation board with high structural strength, good impact resistance, and excellent sound insulation and noise reduction effect, which reduces the interference of noise to surrounding residents, has strong practicality, and can effectively solve the problems in the background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a bridge noise reduction protection sound insulation board, comprising a fixed bottom plate and a noise reduction board;

[0005] Fixed bottom plate: There are two fixed bottom plates, and both of them are provided with mounting holes in an array. A fixed shaft is provided in the middle of the upper surface of the fixed bottom plate. The upper and lower ends of the outer arc surface of the fixed shaft are rotatably connected with shaft sleeves. The shaft sleeve is provided with a limiting groove on the side away from the fixed shaft. Insert strips are inserted into the two opposite limiting grooves, and a protective frame is provided on the front side between the two insert strips;

[0006] Noise reduction board: It is installed on the back side between the two strips. It has strong structural strength, good impact resistance, and excellent sound insulation and noise reduction effects, which reduces the interference of noise to surrounding residents and is highly practical.

[0007] Furthermore, the insert bar includes a T-shaped frame, springs and a T-shaped sliding plate. The T-shaped frames are respectively inserted into two opposite limiting grooves. T-shaped sliding plates are slidably connected inside the T-shaped frames. Springs are vertically arranged in an array on the opposite surfaces of the two T-shaped sliding plates. One ends of the springs away from the T-shaped sliding plates are respectively fixedly connected to the inner walls of the adjacent T-shaped frames. A protective frame is arranged on the front side between the two T-shaped sliding plates. The noise reduction plate is arranged on the rear side between the two T-shaped frames, having a buffering effect and being able to adapt to a relatively large error range.

[0008] Furthermore, the noise reduction plate includes a support plate, an aluminum foil sound insulation layer and porous sound-absorbing cotton. The support plate is arranged on the rear side between the two T-shaped frames. The aluminum foil sound insulation layer is bonded to the front side of the support plate. The porous sound-absorbing cotton is bonded to the front side of the aluminum foil sound insulation layer, blocking and absorbing noise and improving the noise reduction effect.

[0009] Furthermore, the noise reduction plate further includes a honeycomb damping sheet. The honeycomb damping sheet is bonded to the front side of the porous sound-absorbing cotton. The honeycomb damping sheet is located behind the protective frame. The honeycomb-shaped hole structure on the surface of the honeycomb damping sheet reflects noise, improving the blocking effect on noise.

[0010] Furthermore, the support plate is a vacuum support plate, blocking noise by reducing the sound propagation medium and improving the noise reduction effect.

[0011] Furthermore, bolts are threadedly connected to the tops of the fixed shafts. Limiting disks are sleeved on the upper ends of the screw rods of the bolts. The limiting disks are vertically corresponding to the T-shaped frames, limiting the T-shaped frames.

[0012] Furthermore, a fluorescent indication mark is arranged in the middle of the front side of the protective frame, guiding and indicating the direction of the bridge.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows: This bridge noise reduction and protection sound insulation board has the following advantages:

[0014] 1. Fix the fixed bottom plate on the bridge through fixed bolts. Rotate two adjacent shaft sleeves to make them consistent with the direction of the bridge. Then insert the T-shaped frames into two opposite limiting grooves respectively. The T-shaped sliding plates can slide relative to the T-shaped frames, being able to adapt to a relatively large error range between the two opposite T-shaped frames, facilitating installation. Sleeve the limiting disks on the bolts respectively and threadedly connect the bolts to the tops of the fixed shafts, making the limiting disks limit the T-shaped frames. The protective frame and the support plate are both made of aluminum alloy, being able to play a certain blocking and protective role when being impacted, preventing the vehicle from rushing out of the bridge. The fluorescent indication mark can guide and indicate the direction of the bridge at night, with good protective effect.

[0015] 2. When the honking sound of a car on a bridge propagates outward, it first passes through the honeycomb damping sheet. The honeycomb hole structure on the surface of the honeycomb damping sheet causes the noise to undergo diffuse reflection, reducing the lateral transmission of sound waves. The porous sound-absorbing cotton is polyester fiber sound-absorbing cotton. The porous sound-absorbing cotton utilizes its own fiber form and material characteristics to enable the sound wave energy to be reflected and scattered multiple times among the cotton filaments, thereby achieving the purpose of absorbing sound waves. It has a high sound absorption rate and good sound insulation performance. The sound waves passing through the porous sound-absorbing cotton pass through the aluminum foil sound barrier layer. The surface of the aluminum foil sound barrier layer is smooth and can reflect most of the sound waves, preventing the sound from penetrating and transmitting through it. At the same time, aluminum foil is also a good heat insulation material, which can absorb part of the sound waves and convert them into heat energy and dissipate them, which can also reduce noise to a certain extent. Part of the noise passing through the aluminum foil sound barrier layer enters the inside of the support plate. Since the support plate is a vacuum support plate, there are fewer sound wave transmission media inside, which can effectively reduce the sound wave penetration rate and further achieve the noise reduction effect, reducing the interference of noise on surrounding residents. Brief Description of the Drawings

[0016] Figure 1 is a schematic structural diagram of the present utility model;

[0017] Figure 2 is a schematic cross-sectional plane structural diagram of the present utility model.

[0018] In the figure: 1 fixed bottom plate, 2 fixed shaft, 3 bushing, 4 limit groove, 5 insert bar, 51 T-shaped frame, 52 spring, 53 T-shaped sliding plate, 6 noise reduction plate, 61 support plate, 62 aluminum foil sound barrier layer, 63 porous sound-absorbing cotton, 64 honeycomb damping sheet, 7 protective frame, 8 fluorescent indication mark, 9 bolt, 10 limit disc. Detailed Description of the Preferred Embodiment

[0019] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0020] Please refer to Figure 1-2 , this embodiment provides a technical solution: a bridge noise reduction and protection sound insulation board, including a fixed bottom plate 1 and a noise reduction plate 6;

[0021] Fixed bottom plate 1: There are two of them, and mounting holes are arranged in an array inside both of them. In the middle of the upper surface of the fixed bottom plate 1, fixed shafts 2 are provided. At the upper and lower ends of the outer arc surface of the fixed shaft 2, sleeve 3 are rotatably connected. On the side of the sleeve 3 away from the fixed shaft 2, limit grooves 4 are provided. Two adjacent sleeves 3 can rotate relative to the fixed shaft 2, which can adapt to bridges with different bending structures, improving the scope of application. Insert bars 5 are inserted into the relatively two limit grooves 4. In the front side between the two insert bars 5, a protective frame 7 is provided. The insert bar 5 includes a T-shaped frame 51, a spring 52, and a T-shaped slide plate 53. The T-shaped frames 51 are respectively inserted into the relatively two limit grooves 4. Inside the T-shaped frames 51, T-shaped slide plates 53 are slidably connected. On the opposite surfaces of the two T-shaped slide plates 53, springs 52 are vertically arranged in an array. One end of the spring 52 away from the T-shaped slide plate 53 is fixedly connected to the inner wall of the adjacent T-shaped frame 51. In the front side between the two T-shaped slide plates 53, a protective frame 7 is provided. The T-shaped slide plate 53 can slide relative to the T-shaped frame 51, having a buffering effect and being able to adapt to a large error range between the relatively two T-shaped frames 51. In the middle of the front side of the protective frame 7, a fluorescent indication mark 8 is provided to guide the direction of the bridge.

[0022] Noise reduction plate 6: It is arranged at the rear side between the two T-shaped frames 51. The noise reduction plate 6 includes a support plate 61, an aluminum foil sound insulation layer 62, and a porous sound-absorbing cotton 63. The support plate 61 is arranged at the rear side between the two T-shaped frames 51. An aluminum foil sound insulation layer 62 is bonded to the front side of the support plate 61. The surface of the aluminum foil sound insulation layer 62 is smooth and can reflect most of the sound waves. A porous sound-absorbing cotton 63 is bonded to the front side of the aluminum foil sound insulation layer 62. The porous sound-absorbing cotton 63 uses its own fiber form and material characteristics to make the sound wave energy reflect and scatter multiple times among the cotton filaments, so as to achieve the purpose of absorbing sound waves. The noise reduction plate 6 also includes a honeycomb damping sheet 64. The honeycomb damping sheet 64 is bonded to the front side of the porous sound-absorbing cotton 63. The honeycomb damping sheet 64 is located at the rear side of the protective frame 7. The honeycomb-shaped hole structure on the surface of the honeycomb damping sheet 64 reflects the noise, improving the blocking effect on the noise. The support plate 61 is a vacuum support plate, and there are fewer sound wave transmission media inside, which can effectively reduce the penetration rate of sound waves and improve the noise reduction effect.

[0023] Among them: At the top of the fixed shaft 2, bolts 9 are threadedly connected. On the upper end of the screw rod of the bolt 9, limit disks 10 are sleeved. The limit disks 10 are vertically corresponding to the T-shaped frames 51 to limit the T-shaped frames 51.

[0024] The working principle of a bridge noise reduction, protection, and sound insulation board provided by the present utility model is as follows:

[0025] Fix the fixed base plate 1 to the bridge through fixing bolts. Rotate two adjacent bushings 3 to make them in line with the direction of the bridge. Then insert the T-shaped frames 51 into the two opposite limiting grooves 4 respectively. Sleeve the limiting discs 10 on the bolts 9 and thread-connect both the bolts 9 and the top ends of the fixed shafts 2, so that the limiting discs 10 limit the T-shaped frames 51. The protective frame 7 and the support plate 61 are both made of aluminum alloy, which can play a certain role in blocking and protecting when being impacted, preventing the vehicle from rushing out of the bridge. The fluorescent indication sign 8 can guide the direction of the bridge at night. When the horn sound of the vehicle on the bridge propagates outward, it first passes through the honeycomb damping sheet 64. The honeycomb-like hole structure on the surface of the honeycomb damping sheet 64 makes the noise undergo diffuse reflection, reducing the lateral transmission of sound waves. The porous sound-absorbing cotton 63 is polyester fiber sound-absorbing cotton. The porous sound-absorbing cotton 63 utilizes its own fiber form and material characteristics to make the sound wave energy reflect and scatter multiple times among the cotton filaments, thereby achieving the purpose of absorbing sound waves, with a high sound absorption rate and good sound insulation performance. The sound wave passing through the porous sound-absorbing cotton 63 passes through the aluminum foil sound barrier layer 62. The surface of the aluminum foil sound barrier layer 62 is smooth and can reflect most of the sound waves, preventing the sound from passing through it. At the same time, aluminum foil is a good heat insulation material, which can absorb part of the sound waves and convert them into heat energy and dissipate them, also reducing the noise to a certain extent. Part of the noise passing through the aluminum foil sound barrier layer 62 enters the inside of the support plate 61. Since the support plate 61 is a vacuum support plate and there is less sound wave transmission medium inside, it can effectively reduce the penetration rate of sound waves, further achieving a noise reduction effect and reducing the interference of noise on the surrounding residents.

[0026] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, shall be included in the patent protection scope of the present invention by the same token.

Claims

1. A bridge noise reduction and protection sound insulation board, characterized by: It comprises a fixed bottom plate (1) and a noise reduction plate (6); A fixed base plate (1): having two mounting holes arranged in an array inside, a fixed shaft (2) being arranged in the middle of the upper surface of the fixed base plate (1), a shaft sleeve (3) being rotatably connected to the upper and lower ends of the outer arc surface of the fixed shaft (2), a limiting groove (4) being arranged on the side of the shaft sleeve (3) facing away from the fixed shaft (2), an inserting strip (5) being inserted into the inside of the two opposite limiting grooves (4), and a protective frame (7) being arranged on the front side between the two inserting strips (5); Noise reduction plate (6): arranged at the rear side between the two inserts (5); The noise reduction plate (6) comprises a support plate (61), an aluminum foil sound-absorbing layer (62) and porous sound-absorbing cotton (63); the support plate (61) is arranged at the rear side between the two T-shaped frames (51); the front side of the support plate (61) is bonded with the aluminum foil sound-absorbing layer (62); and the front side of the aluminum foil sound-absorbing layer (62) is bonded with the porous sound-absorbing cotton (63); The noise reduction plate (6) further comprises a honeycomb damping sheet (64), wherein the honeycomb damping sheet (64) is bonded to the front side of the porous sound-absorbing cotton (63), and the honeycomb damping sheet (64) is located at the rear side of the protective frame (7); The support plate (61) is a vacuum support plate.

2. The bridge noise reduction and protection sound insulation board according to claim 1 is characterized by: The insert strip (5) comprises a T-shaped frame (51), a spring (52) and a T-shaped slide plate (53); the T-shaped frame (51) is respectively inserted into two opposite limiting grooves (4); the T-shaped slide plates (53) are slidably connected inside the T-shaped frame (51); springs (52) are arranged in a vertical array on the opposite surfaces of the two T-shaped slide plates (53); one end of the spring (52) facing away from the T-shaped slide plate (53) is respectively fixedly connected to the inner wall of the adjacent T-shaped frame (51); a protective frame (7) is arranged on the front side between the two T-shaped slide plates (53); and the noise reduction plate (6) is arranged on the rear side between the two T-shaped frames (51).

3. The bridge noise reduction and protection sound insulation board according to claim 2 is characterized by: The top end of each fixed shaft (2) is threadedly connected with a bolt (9), and the upper end of the screw rod of each bolt (9) is sleeved with a limit plate (10), and the limit plate (10) is arranged vertically corresponding to the T-shaped frame (51).

4. The bridge noise reduction and protection sound insulation board according to claim 1 is characterized by: A fluorescent indicator mark (8) is provided in the middle of the front side of the protection frame (7).

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