CN219410604U

CN219410604U - Assembled composite sound barrier

Info

Publication number: CN219410604U
Application number: CN202223109292.1U
Authority: CN
Inventors: 张小安; 任新轩; 徐建刚; 曹兴潇; 杨力
Original assignee: Lanzhou Jiaotong University
Current assignee: Lanzhou Jiaotong University
Priority date: 2022-11-23
Filing date: 2022-11-23
Publication date: 2023-07-25
Anticipated expiration: 2032-11-23

Abstract

The utility model relates to the field of sound barriers, in particular to an assembled composite sound barrier. The sound barrier comprises a sound-absorbing panel, a sound-absorbing backboard and a beam which is internally installed, wherein a plurality of vibration-absorbing bases are fixedly installed on the beam, hard cotton is placed inside the vibration-absorbing bases, sound-absorbing rock wool is correspondingly installed through the vibration-absorbing bases, and vertical vibration-absorbing ribs are arranged on two sides of each sound-absorbing rock wool. The sound-absorbing frame of the device with the beam structure is used as a main body, a plurality of transverse and longitudinal sound-absorbing and vibration-reducing structures are arranged on the beam, noise generated by self vibration is effectively reduced while noise is blocked, the later maintenance cost of the assembled structure is effectively reduced, and the service life and the acoustic life of the sound barrier are prolonged.

Description

Assembled composite sound barrier

Technical Field

The utility model relates to the field of sound barriers, in particular to an assembled composite sound barrier.

Background

The barrier is mainly used for sound insulation and noise reduction of highways, expressways, rail transit, overhead composite roads and other noise sources. The method is divided into a reflection type sound barrier for pure sound insulation and a composite type sound barrier for combining sound absorption and sound insulation, wherein the reflection type sound barrier and the composite type sound barrier are more effective sound insulation methods.

The existing composite sound barrier has the following problems:

1. the noise reduction effect of the existing track traffic sound barrier is mainly considered, and a metal or concrete plugboard type sound barrier is most commonly adopted to reduce the influence of noise on the track on the line sound environment. However, with the improvement of the operation speed of rail transit vehicles and the long-term operation of trains, the sound barrier is subjected to the long-term effects of vehicle-induced vibration and pneumatic load for a long time, so that the noise problem of the sound barrier can be caused by the sound barrier, and the low-frequency sound environment along the line is further enhanced.

2. Because the existing sound barrier sound-permeable and insulating plate has the problem of overlarge area, the phenomena of plate body fracture and frame deformation can occur under the long-term action of external load, so that the maintenance cost of the sound barrier and the probability of sound leakage are increased, meanwhile, the sound-absorbing material inside the sound-absorbing plate has the problems of serious collapse, aging and the like, so that the replacement difficulty is high, and the overall service life is limited.

3. The existing sound absorbing plate is generally provided with a panel and a back plate, sound absorbing holes are formed in the panel, and along with the development trend that the thickness of the panel and the back plate is thinner, the strength problem of the sound absorbing plate is increasingly prominent. If the frame cross beam is added to solve the problem of supporting strength, the whole weight of the sound barrier is increased and the self vibration is aggravated.

Disclosure of Invention

The utility model provides an assembled composite sound barrier, which effectively solves the problems of the composite sound barrier in the background technology.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

the utility model provides a pin-connected panel compound sound barrier, sound barrier includes acoustic panel 2, inhales sound backplate 3 and internally mounted's crossbeam 4, its characterized in that: the beam 4 is fixedly provided with a plurality of vibration reduction bases 6, hard cotton 8 is placed inside the vibration reduction bases 6, sound-absorbing rock wool 9 is correspondingly installed through the vibration reduction bases 6, and vertical vibration reduction ribs 5 are arranged on two sides of each sound-absorbing rock wool 9.

The vibration damping base 6 is of a semi-elliptic shell structure, and the hard cotton 8 is filled in the vibration damping base 6.

The vibration reduction base 6 is provided with a rubber pad 7.

The sleeving position of the sound-absorbing rock wool 9 and the vibration reduction base 6 adopts an elliptic structure.

The beneficial effects of the utility model are as follows: 1. vertical supporting ribs are added on two sides of sound absorbing rock wool of the sound barrier, the bottom of the sound absorbing rock wool is installed through a vibration reduction base, the supporting strength of a sound absorbing board frame is guaranteed, the deformation of the sound absorbing board under the action of external load is reduced, noise generated by self vibration is reduced, and the service life and the acoustic life of the sound barrier are prolonged.

2. The sound absorbing plate is independently installed by adopting the vibration absorbing base, so that the sound absorbing rock wool can be effectively divided, the damaged sound absorbing rock wool can be independently replaced, and the service life and the acoustic life of the sound barrier can be further prolonged; and the later maintenance is reduced, and the maintenance cost is saved.

Drawings

FIG. 1 is a schematic view of the installation of the present utility model;

FIG. 2 is a schematic view of the external structure of the present utility model;

FIG. 3 is a schematic view of the internal structure of the present utility model;

FIG. 4 is a schematic view of a vibration damping base and sound absorbing rock wool installation;

FIG. 5 is a schematic view of a vibration damping base mounting structure;

the figure shows: the sound-absorbing floor comprises a steel upright column 1, a sound-absorbing panel 2, a sound-absorbing back plate 3, a cross beam 4, vertical vibration-absorbing ribs 5, a vibration-absorbing base 6, a rubber pad 7, hard cotton 8 and sound-absorbing rock cotton 9.

Detailed Description

The technical scheme of the utility model is further described below by specific embodiments with reference to the accompanying drawings:

example 1

The assembled composite sound barrier shown in fig. 1-5 aims to provide a composite sound barrier structure which has high strength, sound insulation, self noise reduction and convenient replacement of a single module, and the whole sound barrier is shown in fig. 1, and two sides of the sound barrier are installed through steel upright posts 1.

As shown in fig. 1, 2 and 3, the sound barrier has a sound-absorbing panel 2 and a sound-absorbing back panel 3 as main bodies, and the sound-absorbing panel 2 and the sound-absorbing back panel 3 are combined to form a rectangular shell structure. The sound-absorbing panel 2 faces the running side of the vehicle, and is provided with strip holes for absorbing sound, and the sound-absorbing backboard 3 is of a sealing structure.

As shown in fig. 3, the sound barrier is internally provided with a plurality of cross beams 4 as installation bodies, and sound insulation devices are installed through the cross beams 4. A plurality of vibration reduction bases 6 for self vibration reduction and noise reduction are uniformly arranged on the cross beam 4, and a sound absorption rock wool 9 is fixedly arranged on each vibration reduction base 6.

The structure of the vibration damping base 6 is shown in fig. 5, firstly, the vibration damping base 6 is of a semi-elliptical shell structure as a whole, and the upper cambered surface of the vibration damping base 6 is made of hard alloy material with the thickness of 0.5-1mm and has certain elasticity. The inside of the oval shell of the vibration damping base 6 is filled with hard cotton 8. The function of the stiff cotton 8 is internal damping and sound absorption. A layer of rubber pad 7 is fixed on the elliptic upper surface of the vibration reduction base 6, and the rubber pad 7 has the functions of reducing vibration and protecting the sound absorption rock wool 9.

During installation, the installation positions of the sound-absorbing rock wool 9 and the vibration reduction base 6 are cut to be elliptical, and then the sound-absorbing rock wool 9 is placed on the vibration reduction base 6. The vibration absorbing rock wool is arranged on the vibration absorbing base 6, so that the vibration of the vibration absorbing rock wool can be effectively reduced, and meanwhile, the vibration absorbing rock wool 9 is fixed and limited.

As shown in fig. 3, the left and right sides of each set of vibration damping base 6 and sound absorbing rock wool 9 are provided with vertical vibration damping ribs 5, which can effectively prevent collision of left and right sides.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims

1. Assembled composite sound barrier, sound barrier include sound panel, inhale sound backplate and internally mounted's crossbeam, its characterized in that: the beam is fixedly provided with a plurality of vibration reduction bases, hard cotton is placed inside the vibration reduction bases, sound-absorbing rock wool is correspondingly installed through the vibration reduction bases, and vertical vibration reduction ribs are arranged on two sides of each sound-absorbing rock wool.

2. The assembled composite sound barrier of claim 1, wherein: the vibration damping base is of a semi-elliptical shell structure, and hard cotton is filled in the vibration damping base.

3. The assembled composite sound barrier of claim 1, wherein: and a rubber pad is arranged on the vibration reduction base.

4. The assembled composite sound barrier of claim 1, wherein: and the sleeving position of the sound-absorbing rock wool and the vibration-damping base adopts an elliptic structure.