CN217733809U

CN217733809U - Integrated multilayer sound absorption board

Info

Publication number: CN217733809U
Application number: CN202220239676.6U
Authority: CN
Inventors: 魏天巍
Original assignee: Beijing Tianqing Tongchuang Environmental Protection Technology Co ltd
Current assignee: Beijing Tianqing Tongchuang Environmental Protection Technology Co ltd
Priority date: 2022-01-28
Filing date: 2022-01-28
Publication date: 2022-11-04
Anticipated expiration: 2032-01-28

Abstract

The utility model provides an integration multilayer acoustic baffle, including shell and polylith sound absorption baffle, be provided with a plurality of sound absorption holes on the shell, polylith sound absorption baffle interval is installed in the shell, forms resonance sound absorption chamber between the adjacent sound absorption baffle and between sound absorption baffle and the shell. The utility model discloses have a plurality of resonance sound absorption chambeies, multilayer sound absorption baffle, multilayer noise elimination improves the sound absorption effect, and noise reduction effect is good.

Description

Integrated multilayer sound absorption board

Technical Field

The utility model belongs to the technical field of the sound barrier, concretely relates to integration multilayer acoustic baffle.

Background

With the vigorous development of the traffic industry in China, various vehicles such as high-speed rails, subways and automobiles continuously appear, and the rapid construction of a high-speed rail network, a rail traffic network and a highway network and the continuous maturity of various traffic networks bring great convenience to the life and work of people. The vehicles such as high-speed rails and the like pass through luxurious downtown areas, suburbs and remote mountain villages during running to form one traffic artery after another. The traffic brings safety, convenience and rapidness and also brings some problems, and one of the important points is that vehicles running on a traffic network can generate great noise, so that the lives, the works and the study of people on two sides of the traffic network are influenced. The noise generation mechanism is different, the adopted noise reduction measures are also different, and in addition to the noise reduction of the noise source, the noise reduction on the propagation path between the sound receiving body and the noise source is an effective noise reduction mode. The sound barrier is the first choice of traffic noise due to its excellent noise reduction effect, convenience of installation and economical efficiency.

However, the current sound barrier has the following problems:

firstly, the sound barrier is single-cavity, and the noise reduction effect is poor;

the second existing sound barrier adopts a bolting or riveting process, has large plate seams, poor pressure resistance, a plurality of sound leakage points among the plate seams and poor sound absorption effect;

thirdly, the sound-absorbing board adopts the traditional cotton sound-absorbing board, and has the problems of pulverization, aging and mildewing of the sound-absorbing board.

In conclusion, the existing sound barrier is not suitable for the field of high-speed railways, the pulsating force positive and negative pressure generated when a train passes through the sound barrier greatly affects the sound barrier and the fasteners thereof, great potential safety hazards exist, and the driving safety cannot be guaranteed.

SUMMERY OF THE UTILITY MODEL

One or more to among the prior art problem, the utility model provides an integration multilayer acoustic baffle, including shell and polylith sound absorption baffle, be provided with a plurality of sound absorption holes on the shell, polylith sound absorption baffle interval installation is in the shell, forms resonance sound absorption chamber between the adjacent sound absorption baffle and between sound absorption baffle and the shell.

Optionally, the sound absorption device further comprises a plurality of sound absorption grooves which are arranged on the inner side of the shell and used for inserting the sound absorption partition plates.

Optionally, the housing at least comprises a back panel, a front panel and a side panel, wherein the front panel is a sound absorption panel; preferably, the front panel is integrally formed with the sound absorption groove; preferably, the back panel, the front panel and the sound absorption groove are integrally formed; preferably, the housing is formed by a back panel, a front panel and side panels; preferably, the back panel and the front panel are U-shaped, and the back panel and the front panel are connected to form the back and the front of the housing and to form the top and the bottom of the housing.

Optionally, the back panel, the front panel and the side panels are inserted through the tongue-and-groove;

preferably, the back panel, the front panel, the sound absorption groove and the tongue-and-groove are integrally formed;

preferably, the tongue-and-groove is of a concavo-convex configuration.

Optionally, the back panel and the front panel are connected by an upper tongue-and-groove and a lower tongue-and-groove; preferably, the side plate is welded with the back panel or the front panel, and further preferably, the side plate is welded with the back panel or the front panel in an argon arc welding manner.

Optionally, the portable electronic device further comprises a drainage hole for discharging liquid entering the shell, and the drainage hole is preferably arranged in the lower rabbet groove.

Optionally, the sound absorption structure comprises a first sound absorption groove, a second sound absorption groove, a first sound absorption partition plate and a second sound absorption partition plate, wherein a first resonance sound absorption cavity is formed between the first sound absorption partition plate and the back panel, a second resonance sound absorption cavity is formed between the first sound absorption partition plate and the second sound absorption partition plate, and a third resonance sound absorption cavity is formed between the second sound absorption partition plate and the front panel.

Optionally, the width of the shell is 50-140 mm, the length is 500-4000 mm, and the height is 200-600 mm;

preferably, the thickness of the back plate is 1.5-5 mm, the width of the first sound absorption groove is 1-5 mm, the width of the second sound absorption groove is 1-5 mm, the thickness of the front plate is 1.5-5 mm, and the thickness of the sound absorption partition plate is 0.5-5 mm;

preferably, the front panel is provided with a plurality of sound absorption holes, further preferably, the perforation rate of the front panel is 10% -35%, further preferably, the hole diameter of the sound absorption holes is 1-10 mm;

preferably, the sound absorption partition board is provided with a plurality of sound absorption holes, further preferably, the perforation rate of the sound absorption partition board is 0.5% -30%, and further preferably, the hole diameter of the sound absorption holes is 0.5-6 mm.

Optionally, the sound absorption partition plate is made of a non-cotton environment-friendly sound absorption material; preferably, the sound absorption partition and the front panel use foamed aluminum, aluminum alloy plate or stainless steel plate.

Optionally, the safety rope device further comprises a safety rope hole arranged on the shell, and the safety rope hole is used for passing through a safety rope; preferably, a plurality of safety rope holes are included, and further preferably, the safety rope holes are symmetrically arranged on the side surface of the shell.

The integrated multilayer sound absorption plate of the utility model is provided with a plurality of resonance sound absorption cavities and multilayer sound absorption partition plates, a plurality of sound absorption holes are arranged on the shell, and air columns in the sound absorption holes are similar to a piston and have certain sound quality; the cavity of the sound absorption cavity is similar to a spring and has certain acoustic compliance; when the air column vibrates, certain acoustic resistance is generated by the friction damping of the wall surface, and the whole system is similarly connected with a plurality of side branch filters. When sound waves are incident to the resonant sound absorption cavity, a part of sound energy is reflected back to a sound source due to the sudden change of acoustic impedance. Simultaneously, under the effect of sound wave, the air column in the sound absorption hole produces the vibration, and the frictional damping during vibration makes partly sound energy conversion again for heat energy and dissipates, like this, only has a small amount of sound energy radiation to go out to reached the purpose of eliminating the noise, the utility model discloses multilayer is eliminated the noise, improves the sound absorption effect, and noise reduction effect is good, and the sound insulation volume is not less than 35dBA, and the noise reduction coefficient is not less than 0.8.

Back panel and front panel are through last tongue-and-groove and lower tongue-and-groove connection, curb plate and back panel or curb plate and front panel welded connection do not adopt bolt joint or rivet technology, can realize the most genuine no riveting processing technology in the overall structure, and the installation is got up and is accomplished zonulae occludens, reduces sound leakage point between the crack, reinforcing compressive capacity and sound absorption effect.

Positive panel and sound absorption groove integrated into one piece, the main part is inhaled the sound insulation face and is adopted integrated forming process, and the whole mechanical properties of this kind of technology is excellent, and the machining precision is high, and the deviation is little, and the installation is got up and is accomplished zonulae occludens, reduces the board crack sound leakage point.

The utility model discloses the sound absorption baffle of inside cavity adopts no cotton environmental protection sound absorbing material, does not have the pulverization of the cotton class acoustic baffle existence of present tradition problem of ageing and mildenes and rot, can accomplish from processing, install the overall process link environmental protection in fortune dimension stage.

The utility model discloses integration multilayer acoustic baffle is suitable for in the high-speed railway field, reduces the influence of the positive negative pressure of pulsating force that the train driving produced through the sound barrier to sound barrier and fastener, and maximum reduction potential safety hazard guarantees driving safety, brings the social that is showing.

The utility model discloses be provided with the safety rope hole on the shell, solved the problem of preventing falling of prior art traditional sound barrier.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a front view of the integrated multilayer sound absorbing panel according to the present invention;

fig. 2 is a top view of the integrated multilayer sound absorbing panel of the present invention;

fig. 3 is a left side view of the integrated multilayer sound absorbing panel of the present invention;

fig. 4 is an isometric view of the integrated multilayer sound absorbing panel of the present invention;

fig. 5 is another isometric view of an integrated multilayer sound absorbing panel according to the present invention;

FIG. 6 is a schematic view of the integrated multilayer panel of the present invention without the acoustic baffle installed;

fig. 7 is a schematic view of the installation sound absorption partition plate of the integrated multilayer sound absorption plate of the present invention.

Detailed Description

In the following, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. Accordingly, the drawings and description are to be regarded as illustrative in nature, and not as restrictive.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first" and "second" may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

The following disclosure provides many different embodiments or examples for implementing different features of the invention. In order to simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or reference letters in the various examples, which have been repeated for purposes of simplicity and clarity and do not in themselves dictate a relationship between the various embodiments and/or arrangements discussed. In addition, the present disclosure provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

The preferred embodiments of the present invention will be described hereinafter with reference to the accompanying drawings, and it should be understood that the preferred embodiments described herein are merely for purposes of illustration and explanation, and are not intended to limit the present invention.

As shown in fig. 1-7, the integrated multilayer sound absorption plate comprises a housing and a plurality of sound absorption partition plates, wherein a plurality of sound absorption holes 12 are formed in the housing, the plurality of sound absorption partition plates are arranged in the housing at intervals, and a resonance sound absorption cavity is formed between adjacent sound absorption partition plates and between the sound absorption partition plates and the housing.

In one embodiment, the integrated multilayer sound-absorbing panel further comprises a plurality of sound-absorbing grooves provided inside the case for inserting the sound-absorbing partition panel.

In one embodiment, the housing comprises at least a back panel 3, a front panel 4, which is an acoustic panel, and side panels 10.

In one embodiment, the housing is formed from a back panel 3, a front panel 4 and side panels 10.

Preferably, the back panel and the front panel are U-shaped, and the back panel and the front panel are connected to form the back and the front of the housing and to form the top and the bottom of the housing.

In the above two embodiments, preferably, the front panel is integrally formed with the sound absorption groove, and further preferably, the back panel, the front panel and the sound absorption groove are integrally formed.

In one embodiment, the back panel, the front panel and the side panels are spliced through the tongue-and-groove.

Preferably, the back panel, the front panel, the sound absorbing groove and the tongue-and-groove are integrally formed.

Preferably, the tongue-and-groove is of a concavo-convex configuration.

In one embodiment, the back panel and the front panel are coupled by upper and lower tongue-and-groove.

Preferably, the side plate is welded with the back panel or the front panel, and further preferably, the side plate is welded with the back panel or the front panel in an argon arc welding manner.

In one embodiment, the integrated multilayer sound absorbing panel further comprises a weep hole for flowing liquid (e.g., rain water) into the enclosure.

Preferably, the drainage hole is arranged in the lower rabbet groove.

In one embodiment, the integrated multilayer sound absorption plate comprises a first sound absorption groove 1, a second sound absorption groove 2, a first sound absorption partition plate 5 and a second sound absorption partition plate 6, wherein a first resonance sound absorption cavity 7 is formed between the first sound absorption partition plate and the back panel 3, a second resonance sound absorption cavity 8 is formed between the first sound absorption partition plate and the second sound absorption partition plate, and a third resonance sound absorption cavity 9 is formed between the second sound absorption partition plate and the front panel 4.

In one embodiment, the width of the shell is 50-140 mm, the length is 500-4000 mm, and the height is 200-600 mm; the thickness of the back plate is 1.5-5 mm, the width of the first sound absorption groove is 1-5 mm, the width of the second sound absorption groove is 1-5 mm, the thickness of the front plate is 1.5-5 mm, and the thickness of the sound absorption partition plate is 0.5-5 mm. Above-mentioned each parameter makes the utility model discloses when the resistance to compression of acoustic baffle is strong, the sound absorption is effectual.

In one embodiment, the front panel is provided with a plurality of sound absorption holes, further preferably, the perforation rate of the front panel is 10% to 35%, further preferably, the hole diameter of the sound absorption holes is 1 mm to 10mm; the sound absorption partition board is provided with a plurality of sound absorption holes, the perforation rate of the sound absorption partition board is more preferably 0.5-30%, and the aperture of the sound absorption holes is more preferably 0.5-6 mm. The perforation rate and the aperture are important parameters of the sound absorption effect, and the sound absorption plate in the range has good sound absorption effect and can completely meet the sound absorption requirement.

In one embodiment, the sound absorption partition board is made of non-cotton environment-friendly sound absorption materials; preferably, the sound absorption partition board and the front panel are made of foamed aluminum, aluminum alloy plates or stainless steel plates, and the integrated multilayer sound absorption board is an integrated multilayer metal sound absorption board.

In one embodiment, the safety rope device further comprises a safety rope hole 11 arranged on the shell, and the safety rope hole is used for penetrating through the safety rope; preferably, a plurality of safety rope holes are included, and further preferably, the safety rope holes are symmetrically arranged on the side surface of the shell. The function of safety rope is to prevent that the acoustic baffle from dropping under the bridge and injuring vehicle and pedestrian by a crashing object. Even under the extreme condition that the vehicle is knocked off and the like, the suspension droops after the sound barrier panel is knocked off can not directly fall below the bridge.

In one embodiment, the method for assembling the integrated multilayer sound absorbing panel includes:

the integrated multilayer sound absorption plate is of a one-time integrated forming structure comprising a back panel, a front panel, a first sound absorption groove, a second sound absorption groove, an upper rabbet groove and a lower rabbet groove, and a first sound absorption baffle is inserted into the first sound absorption groove;

inserting a second sound-absorbing partition plate into the second sound-absorbing groove;

the side plate is buckled with the side end of the integrated forming structure;

and after the two side plates are fastened, performing argon arc welding.

The whole installation process of integration multilayer acoustic baffle process is very simple, the installation is very simple, swift.

The utility model provides an integrated multilayer sound absorption board, which can have 2 to 3 cavities and 3 to 4 sound absorption functional layers, and has excellent sound insulation and absorption performance under the combined action of the multilayer sound absorption board and a resonance sound absorption cavity; the main body sound absorption and insulation surface adopts an integrated forming process, the process has excellent overall mechanical property, high processing precision and small deviation, tight connection can be realized when the main body sound absorption and insulation surface is installed, and sound leakage points between the plate seams are reduced. The sound absorption material of the inner cavity is made of a non-cotton environment-friendly sound absorption material, the problems of pulverization, aging and mildewing of the traditional cotton sound absorption plate do not exist, and the environment is protected in the whole process of processing, installation and operation and maintenance. The side plate and the main body of the integrated multilayer sound absorption plate are connected in a sound absorption and insulation mode through argon arc welding and full welding, bolting or riveting is not adopted, the rivetless processing technology in the whole structure can be truly realized, the integrated multilayer sound absorption plate is particularly suitable for the field of high-speed rails, the influence of pulsating force positive and negative pressure generated when a train runs through the sound barrier on the sound barrier and fasteners of the sound barrier is reduced, potential safety hazards are reduced to the maximum extent, and running safety is guaranteed.

The utility model discloses can effectively solve the whole no riveting problem of sound absorption production board, solve the ageing and the moldy problem of traditional cotton class acoustic baffle, solve the problem of preventing falling of traditional metal acoustic baffle.

The utility model is suitable for a vertical sound barrier and a closed sound barrier, and can be used for indoor noise reduction and outdoor noise reduction; is suitable for various fields such as high-speed rails, subways and the like.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described above, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An integrated multilayer sound absorption plate is characterized by comprising a shell and a plurality of sound absorption partition plates, wherein a plurality of sound absorption holes are formed in the shell, the sound absorption partition plates are arranged in the shell at intervals, and a resonance sound absorption cavity is formed between every two adjacent sound absorption partition plates and between the sound absorption partition plates and the shell; the shell at least comprises a back panel, a front panel and side panels;

the sound absorption device comprises a shell, a plurality of sound absorption grooves and a plurality of sound absorption baffles, wherein the sound absorption grooves are arranged on the inner side of the shell and used for inserting the sound absorption baffles;

the first sound absorption groove is inserted into the first sound absorption partition plate, the second sound absorption groove is inserted into the second sound absorption partition plate, a first resonance sound absorption cavity is formed between the first sound absorption partition plate and the back panel, a second resonance sound absorption cavity is formed between the first sound absorption partition plate and the second sound absorption partition plate, and a third resonance sound absorption cavity is formed between the second sound absorption partition plate and the front panel.

2. The integrated multilayer acoustical panel of claim 1, wherein the front panel is an acoustical panel.

3. The integrated, multi-layer panel of claim 2, wherein the front panel is integrally formed with the sound absorbing channel.

4. The integrated, multi-layer sound absorbing panel as claimed in claim 3, wherein the back panel, the front panel and the sound absorbing groove are integrally formed.

5. The integrated, multi-layered sound absorbing panel as recited in claim 4, wherein the outer shell is formed of a back panel, a front panel and side panels.

6. The integrated multilayer sound absorbing panel according to claim 5, wherein the back panel and the front panel are U-shaped, and the back panel and the front panel are joined to form the back and front faces of the housing and to form the top and bottom faces of the housing.

7. The integrated multilayer acoustical panel of claim 2, wherein the back panel, front panel and side panels are mated by tongue and groove.

8. The integrated, multi-layer acoustical panel of claim 7, wherein the back panel, the front panel, the acoustical groove, and the tongue-and-groove are integrally formed.

9. The integrated, multi-layer acoustical panel of claim 7, wherein the tongue and groove is of a concavo-convex configuration.

10. The integrated, multi-layer acoustical panel of claim 7, wherein the back panel and the front panel are joined by upper and lower tongue-and-groove channels.

11. The integrated, multi-layer acoustical panel of claim 2, wherein the side panel is welded to the back panel or the side panel is welded to the front panel.

12. The integrated multilayer sound absorbing panel according to claim 11, wherein the side panel and the back panel or the side panel and the front panel are connected by argon arc welding.

13. The integrated, multilayer acoustical panel of claim 7 further comprising a weep hole for the egress of liquid into the housing.

14. The integrated multilayer acoustical panel of claim 13, wherein the weep holes are provided in the lower tongue and groove.

15. The integrated multilayer sound-absorbing panel according to claim 1, wherein the housing has a width of 50 to 140mm, a length of 500 to 4000mm and a height of 200 to 600mm.

16. The integrated multilayer sound absorbing panel according to claim 2, wherein the thickness of the rear panel is 1.5 to 5mm, the width of the first sound absorbing groove is 1 to 5mm, the width of the second sound absorbing groove is 1 to 5mm, the thickness of the front panel is 1.5 to 5mm, and the thickness of the sound absorbing partition is 0.5 to 5mm.

17. The integrated multilayer sound absorbing panel according to claim 2, wherein the front panel is provided with a plurality of sound absorbing holes.

18. The integrated multilayer panel of claim 17, wherein the face sheet has a perforation rate of 10% to 35%.

19. The integrated multilayer sound absorbing panel according to claim 18, wherein the sound absorbing holes have a diameter of 1 to 10mm.

20. The integrated multilayer sound absorbing panel according to claim 1, wherein the sound absorbing barrier is provided with a plurality of sound absorbing holes.

21. The integrated multilayer sound absorbing panel according to claim 20, wherein the sound-absorbing partition panel has a perforation rate of 0.5 to 30%.

22. The integrated multilayer sound absorbing panel according to claim 21, wherein the sound absorbing holes have a hole diameter of 0.5 to 6mm.

23. The integrated multilayer sound absorbing panel according to claim 1, wherein the sound absorbing partition is made of a non-cotton environment-friendly sound absorbing material.

24. The integrated multi-layered sound-absorbing panel as claimed in claim 2, wherein the sound-absorbing barrier and the front panel are made of foamed aluminum, aluminum alloy plate or stainless steel plate.

25. The integrated multilayer sound absorbing panel according to claim 1, further comprising a safety cord hole provided on the outer shell, the safety cord hole being for passing a safety cord therethrough.

26. The integrated, multilayer sound absorbing panel according to claim 25, comprising a plurality of safety cord holes.

27. The integrated multilayer sound absorbing panel according to claim 26, wherein the safety line holes are symmetrically formed at the side of the outer shell.