Noise elimination and reduction device for urban subway construction

Abstract

The utility model discloses a noise elimination and reduction device for urban subway construction, which comprises a base plate, a filling layer, a reinforcing plate and a sound absorption plate, the filling layer, the reinforcing plate and the sound absorption plate are sequentially connected to two sides of the base plate from inside to outside, a notch is arranged on the filling layer, the reinforcing plate is connected in the notch, the sound absorption plate is connected in the filling layer in a covering manner, and the sound absorption plate is arranged in the notch. A gap is formed between the sound absorption plate and the reinforcing plate, the sound absorption plate is further connected with a sound attenuation buffering mechanism, a protruding block is arranged on one side of the base plate, and a groove is formed in the other corresponding side of the base plate. Through cooperation of the protruding blocks and the grooves, the multiple base plates can be spliced into a whole to adapt to construction facilities of different sizes, meanwhile, the sound absorption plates are matched with the notches of the filling layers to form air energy dissipation cavities, multiple times of reflection can be increased through the reinforcing plates, and therefore the effects of noise elimination, energy dissipation and noise attenuation are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of subway construction, and particularly relates to a noise reduction device for urban subway construction. Background Art

[0002] Subway construction is to build relevant facilities such as subway lines and stations underground in the city. During the construction process, certain noises will be generated during track laying, mechanical equipment operation, and construction operations, which will have a noise impact on the construction workers in the tunnel and the external residents. Therefore, noise reduction is required to reduce noise pollution.

[0003] For example, a noise reduction device for urban subway construction disclosed in the patent application No. CN202323314265.2 includes a noise reduction mechanism. Fixed mechanisms are installed at the front and rear parts of the noise reduction mechanism. The noise reduction mechanism includes two substrates. Sound insulation boards are fixedly installed on the inner sides of the substrates. A grille board is installed on the inner side of the sound insulation board. A microporous board is installed on the inner side of the grille board. Sound absorption cotton is installed on the inner side of the microporous board. The front views of the two substrates are arranged in an inverted "U" shape, and the two substrates are symmetrically arranged. The length between the front and rear ends of the substrate is greater than the length of the sound insulation board. The side view of the grille board is in a mesh shape, and a number of holes are opened through the inner and outer sides of the microporous board. The noise reduction device for urban subway construction described in the above technical solution reduces the reflection of sound waves to the outside, further reduces the propagation of noise, and is convenient for the overall installation and fixation and quick disassembly.

[0004] However, in actual subway construction, due to different geological conditions, the construction dimensions of subway tunnels and other facilities are not the same. If an integral structure is used for assembly, it cannot adapt to facilities with different construction dimensions, and at the same time, it will also affect the noise reduction effect. Summary of the Utility Model

[0005] The utility model aims to at least solve one of the technical problems existing in the prior art. For this reason, the utility model provides a noise reduction device for urban subway construction, which can be assembled according to the actual construction dimensions and has excellent noise reduction effects at the same time.

[0006] The noise reduction device for urban subway construction according to the first aspect embodiment of the utility model includes a substrate, and a filling layer, a reinforcing plate, and a sound absorption plate that are sequentially connected to both sides of the substrate from the inside to the outside. A notch is formed in the filling layer. The reinforcing plate is connected to the notch. The sound absorption plate is covered and connected in the filling layer. A gap is provided between the sound absorption plate and the reinforcing plate. A noise reduction buffer mechanism is also connected to the sound absorption plate. A convex block is provided on one side of the substrate, and a groove is provided on the corresponding other side of the substrate.

[0007] The noise reduction device for urban subway construction according to the embodiments of the present utility model has at least the following beneficial effects: Through the cooperation of the convex blocks and the grooves, multiple substrate plates can be spliced together to form a whole, so as to adapt to construction facilities of different sizes. At the same time, the sound absorption plate and the notch of the filling layer can form an air energy consumption cavity, and together with the reinforcing plate, it can increase multiple reflections, thereby improving the effect of reducing noise by sound absorption and energy consumption.

[0008] According to some embodiments of the present utility model, the sound absorption plate is a metal microporous plate.

[0009] According to some embodiments of the present utility model, a plurality of notches are evenly spaced on the sound absorption plate, and the sound insulation and buffering mechanism is arranged in the notches and protrudes outside the sound absorption plate.

[0010] According to some embodiments of the present utility model, the sound insulation and buffering mechanism includes a reflection crystal column and a rubber ring coated outside the reflection crystal column.

[0011] According to some embodiments of the present utility model, a plurality of first through holes are evenly formed on the rubber ring.

[0012] According to some embodiments of the present utility model, the reflection crystal column is a cylinder or a prism.

[0013] According to some embodiments of the present utility model, the reinforcing plate is provided with a plurality of second through holes.

[0014] According to some embodiments of the present utility model, a sound reflection plate is connected to the side of the notch close to the substrate plate.

[0015] According to some embodiments of the present utility model, a fireproof layer and a waterproof layer are sequentially coated on both sides of the reinforcing plate.

[0016] According to some embodiments of the present utility model, the filling layer is hollow and has an inner cavity, and the inner cavity of the filling layer is filled with sound insulation cotton.

[0017] Some of the additional aspects and advantages of the present utility model will be given in the following description, some will become obvious from the following description, or will be understood through the practice of the present utility model. Description of the Drawings

[0018] The following will further explain the present utility model in conjunction with the drawings and embodiments, where:

[0019] Figure 1 is a schematic structural diagram of the noise reduction device for urban subway construction according to the embodiments of the present utility model.

[0020] Figure 2 is Figure 1 an enlarged structural diagram of part A in

[0021] 10. Substrate; 11. Bump; 12. Groove; 20. Filling layer; 21. Air energy consumption cavity; 22. Sound insulation cotton; 30. Reinforcing plate; 31. Fireproof layer; 32. Waterproof layer; 40. Sound absorption board; 41. Notch; 51. Reflection crystal column; 52. Rubber ring; 53. First through hole. Detailed implementation manner

[0022] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, in which the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation to the present invention.

[0023] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as up, down, front, back, left, right, etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0024] In the description of the present invention, the meaning of several is one or more, the meaning of multiple is more than two, and understandings such as greater than, less than, exceeding, etc. do not include the present number, and understandings such as above, below, within, etc. include the present number. If the first and second are described only for the purpose of distinguishing technical features, they should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0025] In the description of the present invention, unless otherwise clearly defined, words such as setting, installing, connecting, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution.

[0026] Refer to Figure 1 And Figure 2 As shown, the noise reduction and silencing device for urban subway construction according to the embodiment of the present invention includes a substrate 10, and a filling layer 20, a reinforcing plate 30, and a sound absorption board 40 that are sequentially connected to both sides of the substrate 10 from the inside to the outside. A notch is provided on the filling layer 20, the reinforcing plate 30 is connected in the notch, the sound absorption board 40 is connected and covered in the filling layer 20, a gap is provided between the sound absorption board 40 and the reinforcing plate 30, a sound absorption and buffering mechanism is further connected to the sound absorption board 40, a bump 11 is provided on one side of the substrate 10, and a groove 12 is provided on the corresponding other side of the substrate 10.

[0027] During actual use, through the cooperation of the bumps 11 and the grooves 12, multiple substrates 10 can be spliced together to form a whole, thus adapting to construction facilities of different sizes. At the same time, the sound-absorbing plate 40 and the notch of the filling layer 20 can form an air energy-consuming cavity 21, and together with the reinforcing plate 30, it can increase multiple reflections, thereby improving the effect of noise reduction and energy consumption and attenuating noise.

[0028] Preferably, the bottom and one side of the substrate 10 are provided with grooves 12, and the top and the other side of the substrate 10 are provided with bumps 11. Through this design, the substrate 10 can be fixed on a fixed base (not shown in the figure) set at the construction site, thus facilitating connection.

[0029] Specifically, both the substrate 10 and the filling layer 20 are made of polyurethane foam. Through the above technical solution, making both the substrate 10 and the filling layer 20 of polyurethane foam has excellent elasticity, softness, elongation and compressive strength, and is an excellent sound-absorbing and buffering material.

[0030] In some specific embodiments of the present invention, it may further have the following additional technical features: the sound-absorbing plate 40 is a metal microporous plate. The metal microporous plate allows sounds of different frequencies to pass through the micropores or directly through the sound-absorbing plate 40 itself into the air energy-consuming cavity 21 and undergo multiple reflections and energy consumption. Coupled with the reinforcing plate 30, it can achieve the effect of broadband noise reduction.

[0031] In some specific embodiments of the present invention, it may further have the following additional technical features: a plurality of notches 41 are evenly spaced on the sound-absorbing plate 40, and the sound absorption and buffering mechanism is disposed in the notches 41 and protrudes outside the sound-absorbing plate 40.

[0032] In some specific embodiments of the present invention, it may further have the following additional technical features: the sound absorption and buffering mechanism includes a reflection crystal column 51 and a rubber ring 52 covering the reflection crystal column 51. Through the combination of different materials such as the reflection crystal column 51 and the rubber ring 52, it has multiple reflection angles to increase the number of reflections, thereby improving the energy consumption effect and enhancing the broadband noise reduction effect.

[0033] In some specific embodiments of the present invention, it may further have the following additional technical features: a plurality of first through holes 53 are evenly formed in the rubber ring 52. By providing the first through holes 53, the sound can either pass through the rubber ring 52 in sequence and then contact and reflect with the reflection crystal column 51, or directly contact and reflect with the reflection crystal column 51 through the first through holes 53, so that the sound in the air energy-consuming cavity 21 generates more reflections and collisions, thereby more effectively improving the energy consumption effect.

[0034] In some specific embodiments of the present utility model, it may further have the following additional technical features: The reflecting crystal column 51 is a cylinder or a prism. By using reflecting crystal columns 51 with different surfaces, different reflection angles can be provided, thereby achieving a better energy consumption effect.

[0035] In some specific embodiments of the present utility model, it may further have the following additional technical features: The reinforcing plate 30 is provided with a plurality of second through holes (not shown in the figure). Specifically, the reinforcing plate 30 is made of stainless steel. By making the reinforcing plate 30 of stainless steel, the reinforcing plate 30 can increase the strength of the overall structure. At the same time, the reinforcing plate 30 made of a different material from other structures can absorb sound energy at different frequencies, thereby achieving the effect of broadband sound absorption.

[0036] In some specific embodiments of the present utility model, it may further have the following additional technical features: A sound reflecting plate (not shown in the figure) is connected to the surface of the notch close to the substrate 10. Combined with the second through holes, it further enables the sound in the air energy consumption cavity 21 to generate more reflections and collisions, thereby more effectively improving the energy consumption effect.

[0037] In some specific embodiments of the present utility model, it may further have the following additional technical features: A fireproof layer 31 and a waterproof layer 32 are sequentially coated on both sides of the reinforcing plate 30. The fireproof layer 31 and the waterproof layer 32 can be coated on the reinforcing plate 30 by commonly used coating technical means in the prior art. At the same time, both the fireproof layer 31 and the waterproof layer 32 can use commonly used technical solutions in the prior art, which are not limited herein and will not be elaborated further. By providing the fireproof layer 31 and the waterproof layer 32, the overall durability and safety can be effectively improved.

[0038] In some specific embodiments of the present utility model, it may further have the following additional technical features: The filling layer 20 is hollow and has an inner cavity, and the inner cavity of the filling layer 20 is filled with sound insulation cotton 22. By providing the sound insulation cotton 22, the sound absorption effect can be further improved. The sound insulation cotton 22 can be a commonly used technical solution in the prior art, which is not limited herein and will not be elaborated further.

[0039] The embodiments of the present utility model have been described in detail above with reference to the drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art, various changes can be made without departing from the purpose of the present utility model.

Claims

1. A noise elimination and reduction device for urban subway construction, characterized in that, It includes a substrate (10), and a filling layer (20), a reinforcing plate (30), and a sound-absorbing plate (40) that are sequentially connected to both sides of the substrate (10) from the inside to the outside. Notches are provided on the filling layer (20), the reinforcing plate (30) is connected within the notches, the sound-absorbing plate (40) is covered and connected within the filling layer (20), a gap is provided between the sound-absorbing plate (40) and the reinforcing plate (30), a sound-damping and buffering mechanism is further connected to the sound-absorbing plate (40), a bump (11) is provided on one side of the substrate (10), and a groove (12) is provided on the corresponding other side of the substrate (10).

2. The noise reduction device for urban subway construction according to claim 1, wherein, The sound-absorbing plate (40) is a metal micro-perforated plate.

3. The noise reduction device for urban subway construction according to claim 2, wherein A plurality of notches (41) are evenly spaced on the sound-absorbing plate (40), and the sound-damping and buffering mechanism is provided within the notches (41) and protrudes outside the sound-absorbing plate (40).

4. The noise elimination and reduction device for urban subway construction according to claim 3, characterized in that, The sound-damping and buffering mechanism includes a reflective crystal column (51) and a rubber ring (52) covering the outside of the reflective crystal column (51).

5. The noise elimination and reduction device for urban subway construction according to claim 4, characterized in that, A plurality of first through-holes (53) are evenly provided on the rubber ring (52).

6. The noise reduction device for urban subway construction according to claim 4, characterized in that, The reflective crystal column (51) is a cylinder or a prism.

7. The noise reduction device for urban subway construction according to claim 1, characterized in that, The reinforcing plate (30) is provided with a plurality of second through-holes.

8. The noise reduction device for urban subway construction according to claim 7, characterized in that, A sound reflection plate is connected to the surface of the notch close to the substrate (10).

9. The noise reduction device for urban subway construction according to claim 1, characterized in that, Fireproof layers (31) and waterproof layers (32) are sequentially coated on both sides of the reinforcing plate (30).

10. The noise reduction device for urban subway construction according to claim 1, characterized in that, The filling layer (20) has a hollow inner cavity, and sound insulation cotton (22) is filled in the inner cavity of the filling layer (20).

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