CN219117986U

CN219117986U - Road and bridge noise reduction device

Info

Publication number: CN219117986U
Application number: CN202223283571.XU
Authority: CN
Inventors: 李强; 白红雷; 刘坛; 王丽欣; 康馨宇; 张志强; 赵永强; 石宇; 谭思宇; 黄嘉宁; 赵智奇; 张胜明; 张学辉; 白伟
Original assignee: Beijing Municipal Third Bureau First Engineering Co ltd; Beijing Municipal Construction Co Ltd
Current assignee: Beijing Municipal Third Bureau First Engineering Co ltd; Beijing Municipal Construction Co Ltd
Priority date: 2022-12-07
Filing date: 2022-12-07
Publication date: 2023-06-02
Anticipated expiration: 2032-12-07

Abstract

The utility model relates to a road and bridge noise reduction device belongs to the technical field of acoustic screen, and it includes the acoustic screen, the acoustic screen includes first acoustic screen, second acoustic screen and first sound absorbing cotton, and first sound absorbing cotton is located between first acoustic screen and the second acoustic screen, and a plurality of first amortization holes have been seted up to one side that first acoustic screen is close to first sound absorbing cotton, and a plurality of through-holes have been seted up to one side that the second acoustic screen is close to first sound absorbing cotton, all are provided with the second in first amortization hole and the through-hole and inhale sound cotton, and the second is inhaled sound cotton and first sound absorbing cotton fixed connection, and this application has the effect that improves the acoustic screen and give sound insulation.

Description

Road and bridge noise reduction device

Technical Field

The application relates to the technical field of sound insulation screens, in particular to a road and bridge noise reduction device.

Background

The bridge noise reduction device is mainly a sound insulation screen, which is also called a sound barrier, and is a noise reduction tool, and the application principle of the bridge noise reduction device is to reduce the generation of noise through a propagation way.

The current sound insulation screen is generally a plate-shaped sound insulation material, and the outer surface of the sound insulation screen is provided with a sound absorption groove.

In view of the above-mentioned related art, the inventors consider that the use of the above-mentioned soundproof panel can block only a small amount of noise transmission, and that a large amount of noise directly passes through the soundproof panel or reflects off, and that there is a defect that the soundproof effect of the soundproof panel is poor.

Disclosure of Invention

In order to improve the sound insulation effect of sound insulation screen, this application provides a road and bridge noise reduction device.

The application provides a road and bridge noise reduction device adopts following technical scheme:

the utility model provides a road and bridge noise reduction device, includes the acoustic screen, the acoustic screen includes first acoustic celotex board, second acoustic celotex board and first sound absorbing cotton, and first sound absorbing cotton is located between first acoustic celotex board and the second acoustic celotex board, and a plurality of first amortization holes have been seted up to one side that first acoustic celotex board is close to first sound absorbing cotton, and a plurality of through-holes have been seted up to one side that the second acoustic celotex board is close to first sound absorbing cotton, all are provided with the second in first amortization hole and the through-hole and inhale sound cotton fixed connection with first sound absorbing cotton.

Through adopting above-mentioned technical scheme, the noise is passed to the second acoustic celotex board earlier, and the second acoustic celotex board separates partial noise, and then the second inhale the sound cotton and inhale the sound cotton with first inhale the sound cotton and absorb and weaken the noise that passes the second acoustic celotex board, and the noise of weakening passes through the separation of first acoustic celotex board again and the weakening propagation of first amortization hole at last. Through above-mentioned mechanism, the sound insulation screen carries out multistage separation, multistage absorption and weakens to the noise, has improved the sound insulation effect of sound insulation screen.

Optionally, the second sound insulation board is provided with vacuum chambers between adjacent through holes.

Through adopting above-mentioned technical scheme, the vacuum chamber has reduced the noise that passes the second acoustic celotex board, has improved the sound insulation effect of second acoustic celotex board, and the vacuum chamber is located first acoustic celotex board, has practiced thrift the space, is favorable to reducing the volume of acoustic celotex board.

Optionally, a sound deadening groove is formed in one side, away from the first sound deadening plate, of the second sound deadening plate.

Through adopting above-mentioned technical scheme, the provision of amortization groove has increased the collision number of times of noise and second acoustic celotex board, converts the sound wave into mechanical energy, is favorable to the attenuation of noise.

Optionally, the first acoustic baffle plate is provided with a second silencing hole on the inner wall of the groove.

Through adopting above-mentioned technical scheme, the second amortization hole further increase the collision number of times with the second acoustic celotex board when noise propagates, realize further weakening to the noise.

Optionally, the second silencing hole is communicated with the through hole, and the second silencing hole is obliquely arranged.

Through adopting above-mentioned technical scheme, the second amortization hole prevents the accumulation of rainwater, makes in the direct through-hole of entering of a part noise moreover, is inhaled cotton direct absorption by the second.

Optionally, a waterproof and breathable film is arranged between the second silencing hole and the through hole.

Through adopting above-mentioned technical scheme, waterproof ventilated membrane prevents that moisture in the air from getting into between first acoustic celotex board and the second acoustic celotex board, and cotton noise absorption of first amortization cotton and second amortization leads to the fact the influence, therefore waterproof ventilated membrane plays the guard action to first amortization cotton and second amortization cotton.

Optionally, the sound insulation screen is provided with the bezel around, and the bezel is provided with the recess around, and the spring has set firmly between the inner wall of recess and the sound insulation screen to the bezel.

Through adopting above-mentioned technical scheme, the sound insulation screen utilizes the elasticity of spring when vibrations, plays certain cushioning effect to the sound insulation screen.

Optionally, be provided with the rubber pad between the inner wall of board frame and the acoustic screen, rubber pad and board frame fixed connection.

Through adopting above-mentioned technical scheme, the rubber pad has increased the leakproofness in the recess, makes the impurity in the air be difficult for getting into in the recess, plays the effect of protection to first sound cotton that inhale.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the sound insulation effect of the sound insulation screen is improved through the arrangement of the first sound absorption cotton and the second sound absorption cotton;

2. the second sound-absorbing cotton is arranged in the through hole and the first sound-absorbing hole, so that the close relation between the sound-insulating screens is improved;

3. through set up the spring between bezel and acoustic screen, play absorbing effect to the acoustic screen.

Drawings

Fig. 1 is a schematic structural diagram of a road and bridge noise reduction device according to an embodiment of the present application;

FIG. 2 is a cross-sectional view of an embodiment of the present application showing the internal structure of a sound barrier and a panel frame;

FIG. 3 is an enlarged schematic view of portion A of FIG. 2;

fig. 4 is an exploded view of an embodiment of the present application to embody a sound barrier structure.

In the figure, 1, a sound insulation screen; 11. a first baffle; 111. a first sound deadening hole; 12. a second baffle; 121. a second sound deadening hole; 122. a through hole; 123. a vacuum chamber; 124. a sound deadening groove; 13. a first sound absorbing cotton; 131. a second sound-absorbing cotton; 2. a plate frame; 21. a groove; 3. a fixing plate; 4. a rubber pad; 5. a waterproof breathable film; 6. and (3) a spring.

Detailed Description

The present application is described in further detail below in conjunction with figures 1-4.

The embodiment of the application discloses a road and bridge noise reduction device.

Referring to fig. 1 and 2, a road and bridge noise reduction device includes sound insulation screen 1, and the sound insulation screen 1 outer loop is provided with board frame 2 around, is provided with fixed plate 3 between sound insulation screen 1 and the board frame 2, and fixed plate 3 and 1 fixed connection of sound insulation screen, board frame 2 encircle and set up fluted 21, and the four sides of sound insulation screen 1 and fixed plate 3 all are located fluted 21, and fixed plate 3 and board frame 2 set firmly spring 6 between fluted 21's inner wall. After the noise collides with the soundproof screen 1 for many times, the soundproof screen 1 vibrates, and the soundproof screen 1 is buffered under the expansion and contraction of the spring 6.

Referring to fig. 2 and 3, the sound insulation screen 1 includes a first sound insulation board 11, a second sound insulation board 12 and a first sound absorption cotton 13, the first sound insulation cotton is located between the first sound insulation board 11 and the second sound insulation board 12, and the cross-section sizes of the three are the same, two sides of the first sound absorption cotton 13 are fixedly provided with a plurality of second sound absorption cotton 131, one side of the first sound insulation board 11 close to the first sound absorption cotton 13 is provided with a plurality of first sound attenuation holes 111, the first sound attenuation holes 111 are in one-to-one correspondence with the second sound absorption cotton 131 on one side of the first sound absorption cotton 13, and the second sound absorption cotton 131 is located in the first sound attenuation holes 111.

When noise is transmitted to the second sound-absorbing cotton 131 and the first sound-absorbing cotton 13, a part of the noise is directly absorbed, and another part of the noise is transmitted to the first baffle 11, repeatedly collides in the first sound-deadening hole 111 of the first baffle 11, and the noise is attenuated.

Referring to fig. 3 and 4, a plurality of through holes 122 are formed in one side of the second sound insulation plate 12, which is close to the first sound insulation cotton, the through holes 122 are in one-to-one correspondence with the second sound absorption cotton 131 on the other side of the first sound absorption cotton 13, and the second sound absorption cotton 131 is located in the through holes 122; vacuum chambers 123 are provided between adjacent through holes 122.

Referring to fig. 1 and 4, a plurality of silencing grooves 124 are formed in one side, facing away from the first sound absorbing cotton 13, of the second sound insulating board 12, a plurality of second silencing holes 121 are formed in the inner wall of the silencing groove 124, the second silencing holes 121 are in one-to-one correspondence with the first silencing holes 111 and are communicated with each other, a waterproof breathable film 5 is arranged between the second silencing holes 121 and the first silencing holes 111, and the waterproof breathable film 5 is fixedly connected with the second sound insulating board 12.

When the noise is transmitted to the surface of the second soundproof plate, the noise collides with the second soundproof plate 12 a plurality of times in the silencing grooves 124 and the second silencing holes 121, and the noise is attenuated; a part of the noise is directly contacted with the second sound-absorbing cotton 131 through the second sound-absorbing holes 121 and absorbed by the second sound-absorbing cotton 131; a part of the noise is blocked by the vacuum chamber 123 and cannot pass through the second soundproof plate 12.

The implementation principle of the road and bridge noise reduction device provided by the embodiment of the application is as follows: when noise generated on the road is firstly transmitted to the surface of the second sound insulation plate 12, and is absorbed and converted by the sound insulation grooves 124 and the second sound insulation holes 121 through the blocking of the second sound insulation plate 12, the noise is weakened; when the noise propagates to the first sound-absorbing cotton 13, the noise is attenuated by being absorbed by the first sound-absorbing cotton 13; when propagating to the first baffle 11, the noise is attenuated again by the blocking of the first baffle 11 and the conversion of the first sound deadening holes 111. Through above-mentioned technical scheme, noise weakens and absorbs through the many times of acoustic celotex board 1, has improved the sound insulation effect of acoustic celotex board 1.

The embodiments of the present utility model are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in this way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims

1. The utility model provides a road and bridge noise reduction device, includes acoustic screen (1), its characterized in that: the sound insulation screen (1) comprises a first sound insulation plate (11), a second sound insulation plate (12) and first sound absorption cotton (13), wherein the first sound absorption cotton (13) is located between the first sound insulation plate (11) and the second sound insulation plate (12), one side, close to the first sound absorption cotton (13), of the first sound insulation plate (11) is provided with a plurality of first sound absorption holes (111), one side, close to the first sound absorption cotton (13), of the second sound insulation plate (12) is provided with a plurality of through holes (122), and the first sound absorption holes (111) and the through holes (122) are internally provided with second sound absorption cotton (131), and the second sound absorption cotton (131) is fixedly connected with the first sound absorption cotton (13).

2. The road and bridge noise reduction device according to claim 1, wherein: the second sound insulation plates (12) are provided with vacuum chambers (123) between adjacent through holes (122).

3. The road and bridge noise reduction device according to claim 1, wherein: and one side of the second sound insulation plate (12) deviating from the first sound insulation plate (11) is provided with a sound attenuation groove (124).

4. A road and bridge noise reducer according to claim 3, characterized in that: the second sound insulation plate (12) is provided with a second silencing hole (121) on the inner wall of the groove (21).

5. The road and bridge noise reduction device according to claim 4, wherein: the second silencing hole (121) is communicated with the through hole (122), and the second silencing hole (121) is obliquely arranged.

6. The road and bridge noise reduction device according to claim 5, wherein: a waterproof and breathable film (5) is arranged between the second silencing hole (121) and the through hole (122).

7. The road and bridge noise reduction device according to claim 1, wherein: the sound insulation screen (1) is provided with a plate frame (2) in a surrounding mode, the plate frame (2) is provided with a groove (21) in a surrounding mode, and the plate frame (2) is fixedly provided with a spring (6) between the inner wall of the groove (21) and the sound insulation screen (1).

8. The road and bridge noise reduction device according to claim 7, wherein: a rubber pad (4) is arranged between the inner wall of the plate frame (2) and the sound insulation screen (1), and the rubber pad (4) is fixedly connected with the plate frame (2).