Sound barrier metal sound absorption inner plate

Abstract

The utility model relates to the technical field of sound insulation plates, in particular to a sound barrier metal sound absorption inner plate which comprises a left installation frame, a right installation frame, a panel and bolts, the rear end of the panel is fixedly connected with sound absorption holes, the rear ends of the sound absorption holes are fixedly connected with a glass wool material layer, the rear end of the glass wool material layer is fixedly connected with a rock wool material layer, and the rear end of the rock wool material layer is fixedly connected with a sound absorption layer. A polyester fiber material layer is fixedly connected to the rear end of the rock wool material layer, a sound insulation layer is fixedly connected to the rear end of the polyester fiber material layer, and a plurality of sound absorption holes are formed in the middle of the front end of the panel. According to the metal sound-absorbing inner plate of the sound barrier, the sound-absorbing holes, the glass wool material layer, the rock wool material layer and the polyester fiber material layer on the panel can effectively absorb sound wave energy and reduce reflection and transmission of sound, so that noise pollution is reduced, the sound-insulating performance of the sound barrier is further enhanced due to the arrangement of the sound-insulating layer, and the service life of the sound barrier is prolonged. The sound transmission can be blocked, and a better acoustic isolation effect is provided.

Description

Technical Field

[0001] The utility model relates to the technical field of sound insulation boards, in particular to a metal sound-absorbing inner board for a sound barrier. Background Art

[0002] High-speed rail will generate relatively loud noise during driving. When passing bridges and villages, the noise needs to be silenced, otherwise it will cause serious noise pollution and affect the safety of the train during use. The silencer on the bridge uses sound insulation cotton and cement board to achieve the effect of silencer when in use, but the durability of this method is relatively poor during use. Therefore, the existing technology often uses sound barrier metal sound-absorbing inner panels, which can have reliable durability during use. However, the sound barrier metal sound-absorbing inner panels in the existing technology have a simple structure and poor sound absorption effect. At the same time, the materials are harmful to the human body and the environment, which does not meet the requirements of sustainable development. Therefore, we introduce a sound barrier metal sound-absorbing inner panel. Utility Model Content

[0003] The main purpose of the utility model is to provide a metal sound-absorbing inner plate of a sound barrier, which can effectively solve the problems in the background technology.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A sound barrier metal sound-absorbing inner panel comprises a left mounting frame, a right mounting frame, a panel and bolts, wherein a sound-absorbing hole is fixedly connected to the rear end of the panel, a glass wool material layer is fixedly connected to the rear end of the sound-absorbing hole, a rock wool material layer is fixedly connected to the rear end of the glass wool material layer, a polyester fiber material layer is fixedly connected to the rear end of the rock wool material layer, a sound insulation layer is fixedly connected to the rear end of the polyester fiber material layer, and a plurality of sound-absorbing holes are opened in the middle of the front end of the panel.

[0006] Preferably, the outer surface of the left mounting frame and the outer surface of the right mounting frame are both fixedly sleeved with rubber sealing sleeves.

[0007] Preferably, the inner side surfaces of the left mounting frame and the right mounting frame are both provided with mounting grooves, and the front ends of the left mounting frame and the right mounting frame are both provided with two first mounting holes that penetrate front to back.

[0008] Preferably, second mounting holes that pass through front and back are opened at the four corners of the front end of the panel, the four corners of the front end of the glass wool material layer, the four corners of the front end of the rock wool material layer, the four corners of the front end of the polyester fiber material layer, and the four corners of the front end of the sound insulation layer.

[0009] Preferably, the panel, the glass wool material layer, the rock wool material layer, the polyester fiber material layer and the sound insulation layer are all snapped into the two corresponding installation grooves.

[0010] Preferably, four bolts are provided, and the outer surfaces of the four bolts are respectively threadedly connected to the inner wall surfaces of the corresponding four first mounting holes and the inner wall surfaces of the corresponding twenty second mounting holes, and the rear parts of the outer surfaces of the four bolts are threadedly connected with hexagonal nuts.

[0011] Preferably, the plurality of sound absorbing holes are distributed in a rectangular array.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] 1. The sound-absorbing holes, glass wool material layer, rock wool material layer and polyester fiber material layer on the panel can effectively absorb sound wave energy, reduce sound reflection and transmission, and thus reduce noise pollution. The setting of the sound insulation layer further enhances the sound insulation performance of the sound barrier, which can block the propagation of sound and provide better acoustic isolation effect.

[0014] 2. The panel is made of metal material, which has good corrosion resistance and can be used for a long time in harsh environments. It is not easy to rust or damage. The durability and easy cleaning of metal materials make the maintenance cost of this utility model low. It only needs regular cleaning and inspection to maintain good acoustic performance. The glass wool material layer, rock wool material layer and polyester fiber material layer are all environmentally friendly materials, harmless to the human body and the environment, and meet the requirements of sustainable development. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of a metal sound-absorbing inner plate of a sound barrier of the utility model;

[0016] Figure 2 This is a schematic structural diagram of a left mounting frame, a right mounting frame and a rubber sealing sleeve of a metal sound-absorbing inner plate of a sound barrier according to the utility model;

[0017] Figure 3 This is an exploded view of a panel, bolts and hexagonal nuts of a metal sound-absorbing inner panel of a sound barrier according to the utility model;

[0018] Figure 4 This is an exploded view of the panel, glass wool material layer, rock wool material layer, polyester fiber material layer and sound insulation layer of a sound barrier metal sound-absorbing inner panel of the utility model.

[0019] In the figure: 1. Left mounting frame; 2. Right mounting frame; 3. Rubber sealing sleeve; 4. Mounting groove; 5. First mounting hole; 6. Panel; 7. Sound-absorbing hole; 8. Glass wool material layer; 9. Rock wool material layer; 10. Polyester fiber material layer; 11. Sound insulation layer; 12. Second mounting hole; 13. Bolt; 14. Hexagonal nut. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0021] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0022] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] See also Figure 1-4 , the utility model provides a technical solution:

[0024] A sound barrier metal sound-absorbing inner plate comprises a left mounting frame 1, a right mounting frame 2, a panel 6 and bolts 13; a sound-absorbing hole 7 is fixedly connected to the rear end of the panel 6; a glass wool material layer 8 is fixedly connected to the rear end of the sound-absorbing hole 7; a rock wool material layer 9 is fixedly connected to the rear end of the glass wool material layer 8; a polyester fiber material layer 10 is fixedly connected to the rear end of the rock wool material layer 9; a sound insulation layer 11 is fixedly connected to the rear end of the polyester fiber material layer 10; and a plurality of sound-absorbing holes 7 are opened in the middle of the front end of the panel 6.

[0025] In this embodiment, the outer surfaces of the left mounting frame 1 and the outer surfaces of the right mounting frame 2 are fixedly sleeved with rubber sealing sleeves 3, and the rubber sealing sleeves 3 can ensure good sealing performance and prevent sound leakage from the gaps; the inner sides of the left mounting frame 1 and the right mounting frame 2 are provided with mounting grooves 4, and the front ends of the left mounting frame 1 and the right mounting frame 2 are provided with two first mounting holes 5 that pass through the front and back; the front four corners of the panel 6, the front four corners of the glass wool material layer 8, the front four corners of the rock wool material layer 9, the front four corners of the polyester fiber material layer 10 and the front four corners of the sound insulation layer 11 are provided with second mounting holes 12 that pass through the front and back, and the sound insulation layer 11 is provided with sound insulation felt; the panel 6, the glass wool material layer 8, the rock wool material layer 9, the polyester fiber material layer 10, and the sound insulation layer 11 are provided with sound insulation felt. The material layer 10 and the sound insulation layer 11 are both snapped into the corresponding two mounting grooves 4; four bolts 13 are provided, and the outer surfaces of the four bolts 13 are respectively threadedly connected to the inner wall surfaces of the corresponding four first mounting holes 5 and the inner wall surfaces of the corresponding twenty second mounting holes 12, and the rear parts of the outer surfaces of the four bolts 13 are threadedly connected with hexagonal nuts 14, which makes the installation of the utility model easier and faster, saving installation time and cost. The panel 6, glass wool material layer 8, rock wool material layer 9, polyester fiber material layer 10 and sound insulation layer 11 are fixed together by the left mounting frame 1 and the right mounting frame 2. The structure is stable and can withstand a certain wind pressure and external force, thereby ensuring the safety and stability of the sound barrier; a plurality of sound-absorbing holes 7 are distributed in a rectangular array.

[0026] It should be noted that the utility model is a sound barrier metal sound-absorbing inner panel. During use, when sound waves propagate to the utility model, a part of the sound waves will enter the internal structure through the sound-absorbing holes 7 on the panel 6. The sound waves entering the interior will first encounter the glass wool material layer 8. The glass wool has good sound absorption performance and can absorb most of the sound wave energy. After passing through the glass wool material layer 8, the sound waves continue to propagate to the rock wool material layer 9. The rock wool also has a certain sound absorption effect and can further reduce the energy of the sound waves. Then, the sound waves reach the polyester fiber material layer 10. The polyester fiber material layer 10 can also absorb the sound wave energy and scatter and attenuate the sound to a certain extent. Finally, the sound waves reach the sound insulation layer 11. The main function of the sound insulation layer 11 is to block the propagation of sound waves, so that the sound waves cannot penetrate the utility model, thereby achieving the effect of sound insulation. Through the above working principle, the utility model can effectively absorb and isolate sound, reduce noise pollution, and provide a relatively quiet environment.

[0027] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A metal sound-absorbing inner panel of a sound barrier, comprising a left mounting frame (1), a right mounting frame (2), a panel (6) and bolts (13), characterized in that: The panel (6) is fixedly connected to a sound absorbing hole (7) at the rear end, the sound absorbing hole (7) is fixedly connected to a glass wool material layer (8) at the rear end, the glass wool material layer (8) is fixedly connected to a rock wool material layer (9) at the rear end, the rock wool material layer (9) is fixedly connected to a polyester fiber material layer (10) at the rear end, and the polyester fiber material layer (10) is fixedly connected to a sound insulation layer (11) at the rear end, and a plurality of sound absorbing holes (7) are opened in the middle of the front end of the panel (6).

2. A sound barrier metal sound-absorbing inner panel according to claim 1, characterized in that: The outer surfaces of the left installation frame (1) and the right installation frame (2) are both fixedly sleeved with rubber sealing sleeves (3).

3. The metal sound-absorbing inner panel of a sound barrier according to claim 1, characterized in that: The inner side surfaces of the left mounting frame (1) and the right mounting frame (2) are both provided with mounting grooves (4), and the front ends of the left mounting frame (1) and the right mounting frame (2) are both provided with two first mounting holes (5) that penetrate from front to back.

4. The metal sound-absorbing inner panel of a sound barrier according to claim 1, characterized in that: Second mounting holes (12) that penetrate front and back are formed at the four corners of the front end of the panel (6), the four corners of the front end of the glass wool material layer (8), the four corners of the front end of the rock wool material layer (9), the four corners of the front end of the polyester fiber material layer (10), and the four corners of the front end of the sound insulation layer (11).

5. The metal sound-absorbing inner panel of a sound barrier according to claim 1, characterized in that: The panel (6), the glass wool material layer (8), the rock wool material layer (9), the polyester fiber material layer (10) and the sound insulation layer (11) are all snap-fitted into the two corresponding installation grooves (4).

6. The metal sound-absorbing inner plate of a sound barrier according to claim 1, characterized in that: Four bolts (13) are provided, and the outer surfaces of the four bolts (13) are respectively threadedly connected to the inner wall surfaces of the corresponding four first mounting holes (5) and the inner wall surfaces of the corresponding twenty second mounting holes (12), and the rear parts of the outer surfaces of the four bolts (13) are all threadedly connected to hexagonal nuts (14).

7. The metal sound-absorbing inner plate of a sound barrier according to claim 1, characterized in that: The plurality of sound absorbing holes (7) are distributed in a rectangular array.

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