CN216040774U

CN216040774U - Broadband sound absorption sound barrier cell board

Info

Publication number: CN216040774U
Application number: CN202120556675.XU
Authority: CN
Inventors: 关菲; 何龙
Original assignee: Hefei Zhongchi Sound Barrier Technology Co ltd
Current assignee: Hefei Zhongchi Sound Barrier Technology Co ltd
Priority date: 2021-03-18
Filing date: 2021-03-18
Publication date: 2022-03-15
Anticipated expiration: 2031-03-18

Abstract

The utility model provides a broadband sound absorption and barrier unit plate, which comprises a shell and a sound absorption member arranged in the shell, wherein the shell comprises a sound absorption plate and a sound insulation plate which are mutually buckled to form a hollow shell, the sound absorption member is a microporous metal plate, and the surface of the sound absorption member comprises a plurality of bulges. This scheme is through setting up the sound absorption component that contains protruding structure in the shell, and protruding structure and backplate form continuous, the different cavity of size, have effectively strengthened the sound absorption coefficient of sound barrier cell board at each frequency channel. And the metal sound absorption component can greatly prolong the service life of the whole screen body, can directly prolong the service life of the screen body to about 40 years from 25 years of the prior screen body, reduces the replacement times of the screen body, improves the economy of the screen body, improves the environmental protection performance of the screen body by using the metal sound absorption component, and has great popularization and application prospects.

Description

Broadband sound absorption sound barrier cell board

Technical Field

The utility model relates to the technical field of sound barriers, in particular to a broadband sound absorption sound barrier cell board.

Background

The sound barrier is mainly used for sound insulation and noise reduction of highways, expressways, overhead composite roads and other noise sources, and is divided into a pure sound insulation reflection type sound barrier and a sound absorption and sound insulation combined composite type sound barrier, wherein the sound insulation combined type sound barrier is a more effective sound insulation method and refers to a wall type structure arranged beside railways and highways for reducing the influence of driving noise on nearby residents.

In the sound barrier cell board in the prior art, the sound absorption core material is mostly made of glass fiber cotton and the like, and the materials have environmental protection risks and health risks to human bodies from manufacturing, processing, transporting and using. And the sound-absorbing cotton contains organic additives, so that the service life is seriously influenced, the problem that the sound-absorbing cotton is easy to loosen and overflow after being subjected to long-term wind load and vibration fatigue is mentioned in the national standard GB/T51335, which is caused by aging failure of organic adhesives in the sound-absorbing cotton, is not solved, and the technical problem that the sound barrier which is long in service life and environment-friendly is provided becomes a pending technical problem.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problems of relatively short service life and narrow absorption frequency band of the conventional sound barrier screen body, and provides a broadband sound absorption sound barrier unit plate with wide absorption frequency band and long service life.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the utility model provides a wide band sound absorption sound barrier cell board, its includes the shell and sets up the sound absorption component in this shell, the shell is including the sound absorption board and the sound insulation board that lock each other and form hollow casing, the sound absorption component is the micropore metal sheet, the surface of micropore metal sheet contains a plurality of archs.

Preferably, the protrusions are in a strip structure, and the protrusions are arranged in parallel.

Preferably, the protrusions have a triangular, trapezoidal, square or arc-shaped configuration extending in the longitudinal direction of the sound-absorbing member.

Preferably, the protrusions are triangular, trapezoidal, square or arc structures extending along the vertical direction of the sound absorption member, and the protrusions are arranged in parallel.

Preferably, the protrusions are independent dot-shaped structures, which are cone-shaped, truncated cone-shaped, cylindrical or hemispherical structures or a combination thereof.

Preferably, the sound absorbing member is disposed on the sound insulation plate side, and a cavity is provided between an apex of the projection of the sound absorbing member and the sound absorbing plate.

Preferably, the height of the protrusion is 1-15 cm.

Preferably, the height of the protrusion is between 1mm and 10 mm.

Preferably, a sound absorption material layer is further arranged between the microporous metal plate and the sound absorption plate.

Preferably, the thickness of the sound absorption material layer is 1.5 cm-6 cm, and the sound absorption material is one or more of melamine cotton block, magnesium silicate fiber layer, rock wool and glass wool.

The utility model has the beneficial effects that: this scheme is through setting up the sound absorption component that contains protruding structure in the shell, and protruding structure and backplate form continuous, the different cavity of size, have effectively strengthened the sound absorption coefficient of sound barrier cell board at each frequency channel. And the metal sound absorption component can greatly prolong the service life of the whole screen body, can directly prolong the service life of the screen body to about 40 years from 25 years of the prior screen body, reduces the replacement times of the screen body, improves the economy of the screen body, improves the environmental protection performance of the screen body by using the metal sound absorption component, and has great popularization and application prospects.

Drawings

FIG. 1 is a schematic cross-sectional view of an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of a second embodiment;

fig. 3 is a schematic structural view of a first sound absorbing member.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Referring to fig. 1-3, a broadband sound absorption and barrier cell plate comprises a housing and a sound absorption member arranged in the housing, wherein the housing comprises a sound absorption plate 1 and a sound insulation plate 2 which are mutually buckled to form a hollow shell, the sound absorption member is a microporous metal plate 3, and the surface of the sound absorption member comprises a plurality of protrusions. Specifically, the protrusions are in a strip structure, and the protrusions are arranged in parallel. As a first alternative, the protrusions are triangular, trapezoidal, square or arc-shaped structures extending in the longitudinal direction of the sound-absorbing member; as a second option, the protrusions are triangular, trapezoidal, square or arc structures extending in the vertical direction of the sound absorbing member, and the protrusions are arranged in parallel.

Alternatively, the protrusions are independent dot-shaped structures (not shown), which are cone-shaped, truncated cone-shaped, cylindrical or hemispherical structures or a combination thereof. The sound absorption member leans against the sound insulation board side, and a cavity is arranged between the top point of the bulge of the sound absorption member and the sound absorption board. Alternatively, the height of the protrusions is between 1 and 15 cm; alternatively, the height of the protrusions is between 1mm and 10 mm. A sound absorption material layer 4 is further arranged between the microporous metal plate 3 and the sound absorption plate 1, the thickness of the sound absorption material layer 4 is 1.5-6 cm, and the sound absorption material is one or more of a melamine cotton block, a magnesium silicate fiber layer, rock wool and glass wool.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.

Claims

1. A broadband sound absorption and barrier cell plate comprises a shell and a sound absorption member arranged in the shell, wherein the shell comprises a sound absorption plate and a sound insulation plate which are mutually buckled to form a hollow shell, and the sound absorption member is a microporous metal plate.

2. The broadband sound absorbing barrier cell plate of claim 1, wherein the protrusions are strip-shaped structures and are arranged in parallel.

3. The broadband sound absorbing barrier cell panel of claim 2, wherein the protrusions are of triangular, trapezoidal, square or arcuate configuration extending in the longitudinal direction of the sound absorbing member.

4. The broadband sound absorbing barrier cell panel of claim 2, wherein the protrusions are triangular, trapezoidal, square or arc-shaped structures extending in the vertical direction of the sound absorbing member, and the protrusions are arranged in parallel.

5. The broadband sound absorbing barrier cell panel of claim 1, wherein the protrusions are dot-like structures independent of each other, which are cone-shaped, truncated cone-shaped, cylindrical or hemispherical structures or a combination thereof.

6. The broadband sound absorbing barrier cell panel of any one of claims 1 to 5, wherein the sound absorbing member is disposed against the sound insulation panel side, and a cavity is provided between an apex of the protrusion of the sound absorbing member and the sound absorbing panel.

7. The broadband sound absorbing barrier cell panel of any one of claims 1 to 5, wherein the height of the protrusions is between 1 and 15 cm.

8. The broadband sound absorbing barrier cell panel of claim 1, wherein the height of the protrusions is between 1mm and 10 mm.

9. The broadband sound absorbing barrier cell plate of claim 8, wherein a layer of sound absorbing material is further disposed between the cellular metal plate and the sound absorbing panel.

10. The broadband sound absorption barrier cell plate of claim 9, wherein the thickness of the sound absorption material layer is 1.5cm to 6cm, and the sound absorption material is one or more of melamine cotton block, magnesium silicate fiber layer, rock wool and glass wool.