CN219260766U - Noise reduction device for viaduct - Google Patents

Abstract

The utility model provides a viaduct noise reduction device which comprises a plurality of steel upright posts and a sound insulation unit, wherein the steel upright posts and the sound insulation unit are fixed on an anti-collision wall, the two sides of the steel upright posts are provided with assembly grooves, the two sides of the sound insulation unit are provided with assembly heads matched with the assembly grooves, the sound insulation unit comprises a porous sound absorption plate, a front plate and a back plate, the porous sound absorption plate is provided with a plurality of through holes, a honeycomb sound insulation plate is connected between the front plate and the back plate in an abutting mode, the lower end of the sound insulation unit is provided with a convex plug, the upper end of the sound insulation unit is provided with an end cover, and the upper end surface of the end cover is provided with a concave groove for the plug to be inserted. The utility model has good sound absorption, sound insulation, heat preservation and heat insulation effects, warning function, stable structure, convenient installation and long service life.

Description

Noise reduction device for viaduct

Technical Field

The utility model belongs to the technical field of noise pollution treatment, and relates to a noise reduction device for a viaduct.

Background

Noise pollution such as noise of a water horse on a viaduct, noise of an automobile engine, noise of a loudspeaker, noise of a tire friction road surface and the like affects normal life of nearby residents, and a noise reduction device is arranged on the viaduct to be a necessary measure.

The noise barrier is generally used for noise reduction on the viaduct and mainly comprises a steel structure upright post and a sound absorption and insulation plate, is a sound absorption material for isolating noise, is commonly used in high-speed, viaduct, communities and the like, and can be divided into two types: a reflection type sound barrier for pure sound insulation, and a composite type sound barrier combining sound absorption and sound insulation.

The existing noise reduction device of the viaduct has the problem of poor sound absorption effect, and the reflection and refraction phenomena of sound are generated due to different propagation speeds of the sound in different media, so that various noises are filled in the viaduct during the peak period of traffic flow due to the poor sound absorption effect, and the driving experience is seriously influenced; the existing noise reduction devices such as PC acrylic plates, glass fiber reinforced plastics, metal shutters, metal screen holes and the like have the problem of poor heat preservation and insulation effects, so that the temperature in summer is obviously higher than the temperature in the outside in viaducts, and the temperature in winter is extremely low; the sound barrier that the overpass was laid in succession easily leads to driving fatigue, does not have the warning effect.

Disclosure of Invention

The utility model aims to solve the problems in the prior art, and provides a viaduct noise reduction device which solves the problems.

The aim of the utility model can be achieved by the following technical scheme: the utility model provides a device of making an uproar falls in overpass, includes a plurality of steel stands, the sound insulation unit of fixing on the anticollision wall, open on steel stand both sides has the assembly groove, and sound insulation unit both sides have with assembly groove complex assembly head, a serial communication port, sound insulation unit includes porous abatvoix, front bezel, backplate, it has a plurality of through-holes to open on the porous abatvoix, pastes between front bezel and the backplate and is connected with cellular acoustic celotex board, the sound insulation unit lower extreme is equipped with protruding font plug, the sound insulation unit upper end is equipped with the end cover, and open the end cover up end has the concave groove that supplies plug male.

The porous sound-absorbing plate is provided with a plurality of through holes, the sound-absorbing principle is that sound waves can enter the interior of the material along the through holes through a large number of communicated through holes in the plate, and rub with the material to convert sound energy into heat, so that the sound absorption and noise reduction are achieved; the front plate and the back plate mainly play a role in sound insulation, the honeycomb-shaped sound insulation plate is connected between the front plate and the back plate in an abutting mode, according to the principle that the heat conducting performance of air is poor, the sound insulation plate can effectively isolate heat energy outside the back plate in summer, and can keep the heat energy in the viaduct in winter, so that the effects of heat preservation and heat insulation are achieved; the plug is matched with the concave groove of the end cover, so that the structure is more stable and the assembly is simple.

Preferably, the two sides of the end cover are provided with T-shaped clamping grooves, the semi-cylindrical sound absorbing blocks are embedded in the clamping grooves, and the length of the sound absorbing blocks is the same as the distance between two adjacent steel upright posts. The semi-cylindrical sound absorption block plays a certain sound absorption role, and can refract sound waves upwards or downwards instead of reflecting, so that noise in the viaduct can be reduced.

Preferably, the outer surface of the sound absorption block is stuck with yellow reflective strips. The reflection of light strip of high price bridge inboard plays the warning effect, prevents that the driver from tiring, and the reflection of light strip of high price bridge outside has the effect of driving birds, and the overpass is set up in the eminence and span is big, often has birds striking sound barrier, and yellow plus reflection of light has effective effect of driving birds.

Preferably, the through holes are hexagonal, the through holes incline upwards, and the included angle between the through holes and the horizontal inclination is 15-45 degrees. The through holes on the porous sound absorbing plate are generally arranged in parallel, and because noise of automobile engine sound, loudspeaker sound and tire friction road surface is emitted from the bottom, the upward inclination of the through holes is more targeted and can prolong the sound absorbing channel, so that the noise can be effectively absorbed, and meanwhile, the upward inclination of the through holes can prevent dust and rainwater from entering.

Preferably, the lower end of the steel upright post is provided with a connecting flange, the anti-collision wall is internally provided with embedded bolts, and the connecting flange is provided with mounting holes corresponding to the embedded bolts. The connecting flange and the embedded bolt fixing structure are adopted to be more stable, and the installation is also convenient.

Preferably, the porous sound-absorbing plate is tightly attached to the outer side face of the front plate, and the upper end face and the lower end face of the porous sound-absorbing plate are fixedly connected with the end cover and the plug respectively.

Preferably, the thickness of the sound insulation board is 2-5cm.

Preferably, the height of the sound insulation units is 0.5-1m, and 2-5 sound insulation units are assembled between two adjacent steel upright posts.

Preferably, the upper end of the steel upright post is fixedly connected with a baffle plate capable of covering the end cover, the upper end of the baffle plate is provided with an inclined plane inclined from the middle to two sides, and the lower end of the baffle plate is provided with a clamping head capable of being clamped into the concave groove. The baffle can prevent rainwater and dust from accumulating on the sound insulation unit, and the service life of the sound insulation unit is prolonged.

Preferably, two sides of the upper end face of the end cover and two sides of the lower end face of the plug are provided with corresponding semicircular grooves, and rubber strips are arranged in the semicircular grooves. The rubber strip can effectively improve the sealing property of connection between the sound insulation units.

Compared with the prior art, the utility model has the following advantages:

1. the sound absorption and insulation effects are good, noise expansion is reduced, the life of residents is influenced, the noise in the viaduct is effectively reduced, and driving experience is improved;

2. the heat preservation and insulation effects are good, so that the temperature in the viaduct is proper, and the driving comfort is improved;

3. the bird-repellent anti-collision warning device has a warning function, prevents fatigue driving and accidents, and prevents birds from striking;

4. stable structure, convenient installation and long service life.

Drawings

Fig. 1 is an elevational view of the overall structure of the present utility model.

Fig. 2 is a schematic sectional structure of the soundproof unit.

Fig. 3 is an elevation view of a baffle.

Fig. 4 is an elevation view of a porous acoustic panel.

Fig. 5 is a schematic view of a cross-sectional structure of a steel column.

Fig. 6 is a schematic view of the connection structure of the steel column and the soundproof unit.

In the figure, 1, a steel upright post; 11. an assembly groove; 12. a connecting flange; 121. a mounting hole; 2. a sound insulation unit; 21. an assembly head; 22. a porous sound absorbing panel; 221. a through hole; 23. a front plate; 24. a back plate; 25. a sound insulation board; 26. a plug; 27. an end cap; 271. a concave groove; 272. a clamping groove; 3. an anti-collision wall; 31. embedding bolts; 4. a sound-absorbing block; 41. a reflective strip; 5. a baffle; 51. an inclined plane; 52. a chuck; 6. a semicircular groove; 7. rubber strips.

Detailed Description

The following are specific embodiments of the present utility model and the technical solutions of the present utility model will be further described with reference to the accompanying drawings, but the present utility model is not limited to these embodiments.

As shown in fig. 1 and 2, the noise reduction device for the viaduct comprises a plurality of steel upright posts 1 and a sound insulation unit 2 which are fixed on an anti-collision wall 3, wherein the two sides of each steel upright post 1 are provided with an assembly groove 11, and the two sides of each sound insulation unit 2 are provided with an assembly head 21 matched with the assembly grooves 11.

The two sides of the end cover 27 are provided with T-shaped clamping grooves 272, the semi-cylindrical sound absorption blocks 4 are embedded in the clamping grooves 272, and the length of each sound absorption block 4 is the same as the distance between two adjacent steel upright posts 1.

The outer surface of the sound absorption block 4 is stuck with yellow reflective strips 41.

As shown in fig. 2, the through hole 221 is hexagonal, the through hole 221 is inclined upward, and the inclined angle between the through hole 221 and the horizontal direction is 15-45 °.

As shown in fig. 5, the lower end of the steel upright 1 is provided with a connecting flange 12, the anti-collision wall 3 is internally provided with an embedded bolt 31, and the connecting flange 12 is provided with a mounting hole 121 corresponding to the embedded bolt 31.

As shown in fig. 2, the porous sound absorbing plate 22 is closely attached to the outer side surface of the front plate 23, and the upper end surface and the lower end surface of the porous sound absorbing plate 22 are respectively and fixedly connected with the end cover 27 and the plug 26.

The thickness of the baffle 25 is 2-5cm.

As shown in fig. 1, the height of the sound insulation units 2 is 0.5-1m, and 2-5 sound insulation units 2 are assembled between two adjacent steel upright posts 1.

As shown in fig. 2, the upper end of the steel upright 1 is fixedly connected with a baffle plate 5 capable of covering the end cover 27, the upper end of the baffle plate 5 is provided with an inclined surface 51 inclined from the middle to two sides, and the lower end of the baffle plate 5 is provided with a clamping head 52 capable of being clamped into a concave groove 271.

The two sides of the upper end face of the end cover 27 and the two sides of the lower end face of the plug 26 are provided with corresponding semicircular grooves 6, and rubber strips 7 are arranged in the semicircular grooves 6.

Working principle: firstly, the steel upright posts 1 are fixedly connected with the embedded bolts 31 through the connecting flanges 12, after one side of the porous acoustic board 22 faces the viaduct, a plurality of acoustic insulation units 2 are sequentially arranged between two adjacent steel upright posts 1 from bottom to top, and finally, the baffle plates 5 are fixed at the top ends of the steel upright posts 1.

The specific embodiments described herein are offered by way of example only to illustrate the spirit of the utility model. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the utility model or exceeding the scope of the utility model as defined in the accompanying claims.

Claims (10)

1. The utility model provides a device of making an uproar falls in overpass, includes a plurality of steel stands (1) of fixing on anti-collision wall (3), sound insulation unit (2), open steel stand (1) both sides has fitting groove (11), sound insulation unit (2) both sides have with fitting groove (11) complex assembly head (21), a serial communication port, sound insulation unit (2) are including porous abatvoix (22), front bezel (23), backplate (24), it has a plurality of through-holes (221) to open on porous abatvoix (22), pastes between front bezel (23) and backplate (24) to be connected with cellular acoustic celotex board (25), sound insulation unit (2) lower extreme is equipped with protruding font plug (26), sound insulation unit (2) upper end is equipped with end cover (27), and open on end cover (27) up end has concave groove (271) that supplies plug (26) to insert.

2. The viaduct noise reduction device according to claim 1, wherein T-shaped clamping grooves (272) are formed in two sides of the end cover (27), semi-cylindrical sound absorption blocks (4) are embedded in the clamping grooves (272), and the length of the sound absorption blocks (4) is identical to the distance between two adjacent steel upright posts (1).

3. The viaduct noise reducer of claim 2, wherein the sound absorbing block has yellow reflective strips affixed to the outer surface thereof.

4. The overpass noise reduction device according to claim 1, wherein the through hole (221) is hexagonal, the through hole (221) is inclined upward, and the inclined angle between the through hole (221) and the horizontal direction is 15-45 °.

5. The viaduct noise reduction device according to claim 1, wherein the lower end of the steel upright post (1) is provided with a connecting flange (12), the anti-collision wall (3) is internally provided with an embedded bolt (31), and the connecting flange (12) is provided with a mounting hole (121) corresponding to the embedded bolt (31).

6. The viaduct noise reduction device according to claim 1, wherein the porous sound absorbing plate (22) is tightly attached to the outer side surface of the front plate (23), and the upper end surface and the lower end surface of the porous sound absorbing plate (22) are fixedly connected with the end cover (27) and the plug (26) respectively.

7. A viaduct noise reducer according to claim 1, wherein the thickness of the baffle (25) is 2-5cm.

8. The overpass noise reduction device according to claim 1, characterized in that the sound insulation unit (2) has a height of 0.5-1m, between two adjacent steel uprights (1) 2-5 sound insulation units (2) are fitted.

9. The viaduct noise reduction device according to claim 1, wherein a baffle plate (5) capable of covering the end cover (27) is fixedly connected to the upper end of the steel upright post (1), an inclined surface (51) inclined from the middle to two sides is arranged at the upper end of the baffle plate (5), and a clamping head (52) capable of being clamped into the concave groove (271) is arranged at the lower end of the baffle plate (5).

10. The viaduct noise reduction device according to claim 1, wherein the two sides of the upper end surface of the end cover (27) and the two sides of the lower end surface of the plug (26) are provided with corresponding semicircular grooves (6), and rubber strips (7) are arranged in the semicircular grooves (6).

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