CN218540464U

CN218540464U - Sound barrier unit and section bar combination formula metal sound barrier that excels in that constitutes thereof

Info

Publication number: CN218540464U
Application number: CN202221898839.8U
Authority: CN
Inventors: 钱兵; 戴梦超; 朱俊
Original assignee: Jiangsu Xinguang Environmental Protection Engineering Co ltd
Current assignee: Jiangsu Xinguang Environmental Protection Engineering Co ltd
Priority date: 2022-07-22
Filing date: 2022-07-22
Publication date: 2023-02-28
Anticipated expiration: 2032-07-22

Abstract

The invention provides a sound barrier unit and a section bar combined type high-strength metal sound barrier composed of the sound barrier unit; the sound barrier unit comprises a profile outer frame unit and an acoustic structure unit, the acoustic structure unit is fixed on the profile outer frame unit, the profile outer frame unit comprises an upper profile, a lower profile and at least two frame profiles, and the profile outer frame unit is formed by combination; the acoustic structure unit comprises a sound insulation structure unit and a sound absorption structure unit, the sound insulation structure unit faces the noise reduction direction, and the sound absorption structure unit faces the noise source direction; the sound insulation structure unit and the sound absorption structure unit are respectively fixed by an upper section bar, a lower section bar and at least two frame section bars; still provide a section bar combination formula metal sound barrier that excels in, include the sound barrier unit group that constitutes by the sound barrier unit of a set of concatenation from top to bottom, the left and right sides of sound barrier unit group is provided with the steel stand, and the top of sound barrier unit group is provided with the top apron. The sound barrier in the sectional material combination form can further improve the mechanical strength of the traditional sound barrier, increase the structural stability and improve the use safety.

Description

Sound barrier unit and section bar combination formula metal sound barrier that excels in that constitutes thereof

Technical Field

The invention relates to the technical field of vibration and noise control, in particular to a sound barrier unit and a profile combined type high-strength metal sound barrier composed of the sound barrier unit.

Background

Along with the deepening of the country for the construction of the beautiful life of people, the increasing of the supervision of environmental problems and the increasing of the environmental awareness of residents, various environmental problems are more and more emphasized, and the noise is more and more obvious as the prominent point of contradiction. The continuous establishment of various traffic networks brings convenience to people to go out and brings a series of noise problems. The traffic noise has the characteristics of long persistence, wide influence range and the like, such as high-speed railway noise, urban rail traffic noise, urban expressway noise and the like.

The erection of traffic noise is generally controlled by installing sound barriers on both sides of the road. Taking a high-speed rail sound barrier as an example, the traditional metal sound barrier mostly adopts an aluminum alloy shell, and glass wool or rock wool is used as a sound absorber. Such sound barriers structurally have: (1) The metal box is formed by folding a metal plate and is divided into a panel and a back plate; (2) The internal structure (from the panel to the back plate) of the metal sound barrier is a sound absorber, a rigid plate, a keel and a back plate. The sound absorber is fixed on the rigid back plate through bolts, the back plate is arranged on the keel, and the keel is fixed on the back plate; (3) fixing the metal sound barrier panel and the back plate by using rivets; (4) All rubber members for damping the seal box were fixed to the designated portions of the sound barrier of the metal box using rivets.

Although the traditional metal sound barrier structure is relatively simple, a large number of connecting components are used inside the traditional metal sound barrier structure, certain potential safety hazards exist for long-term use in a high-vibration environment, and the sound insulation quantity is insufficient in practical use; glass wool or rock wool is used as a sound absorption material in the traditional metal sound barrier, so that not only is a certain harm to personnel in the production and processing process, but also the use environment is polluted, and the integral performance of the sound barrier is deteriorated due to the fact that the sound absorption material in the traditional metal sound barrier is prone to losing efficacy after long-term use; for non-standard products, the traditional metal sound barrier is inconvenient to produce, and due to the limitation of the production mode, the surface flatness of the sound barrier is poor and the appearance is poor; in addition, the vibration damping rubber components are connected by rivets, so the vibration damping rubber components are easy to fall off in the using process and are inconvenient to install. Aiming at the problems of the traditional metal sound barrier, the section bar combined type high-strength metal sound barrier is provided for solving the problem that the traditional metal sound barrier cannot meet the requirements, and through practical verification of researchers, the measures not only can solve the problems of the traditional metal sound barrier, but also have simple structure and convenient assembly, and especially have incomparable advantages of the traditional metal sound barrier when aiming at the production of non-standard products.

At present, there are patents related to sectional material combined type sound barrier: the "a multilateral combination formula sound barrier of aluminium alloy of application such as Liu Guijun jun", publication number: CN 211646058U, its structure includes: go up roof, front panel, rear panel, lower plate and noise elimination module. According to the expression, the top plate, the front panel, the rear panel, the bottom plate and the like are connected through the clamping grooves, centrifugal glass wool is used as a sound absorber, and a metal stretching net is used for wrapping in order to prevent the sound absorber from falling off. The structure is connected by using the plurality of clamping grooves, so that the integral stability of the sound barrier unit plate is difficult to ensure, and the assembly is very troublesome and the production efficiency is low due to a plurality of structural members in the production process; the tensile metal mesh is used for wrapping the centrifugal glass wool to serve as the sound absorber, so that the environment is polluted, and the condition that the sound absorbing material fails in long-term use exists. In addition, according to the patent document, the sound barrier unit plates are directly spliced to form hidden sound leakage hazards, and the protection of sensitive points is not facilitated.

Disclosure of Invention

The invention aims to: the invention aims to provide a sound barrier unit and a profile combined type high-strength metal sound barrier composed of the sound barrier unit, aiming at the defects of the prior art. The outer frame structure consists of an upper section bar, a lower section bar and a frame section bar. The sound absorption structure is composed of non-fiber sound absorption materials (such as through hole foamed aluminum sound absorption materials, particle sound absorption materials or foamed high polymer materials) and a perforated panel, has the advantages of simple structure, simplicity and convenience in installation and wide sound absorption frequency range, particularly has an excellent absorption effect on low-medium frequency noise, and particularly has a good inhibition effect on traffic noise. The sound insulation structure is a structure which is composed of metal plates and provided with at least one cavity, and the structure not only enables the sound barrier unit plate to have excellent sound insulation capability, but also enables the sound barrier unit plate to have excellent mechanical properties after the panel and the frame are combined. Compared with the traditional sound barrier cell plate, the rivet is used for installing the rubber strip for vibration damping sealing on the cell plate, the rubber strip for vibration damping sealing is installed on the cell plate through the installation groove reserved in the sectional material, the stability, the attractiveness and the installation simplicity of the rubber strip are effectively improved, and the stability of the sectional material of the sound barrier plate is ensured due to the fact that the rivet is not additionally used.

A sound barrier unit comprises a profile outer frame unit and an acoustic structure unit, wherein the acoustic structure unit is fixed on the profile outer frame unit, the profile outer frame unit comprises an upper profile, a lower profile and at least two frame profiles, and the upper profile, the lower profile and the at least two frame profiles are fixed through corner groove connecting pieces; assembling a section outer frame unit;

the acoustic structure unit comprises a sound insulation structure unit and a sound absorption structure unit, the sound insulation structure unit faces the noise reduction direction, and the sound absorption structure unit faces the noise source direction; the sound insulation structure unit and the sound absorption structure unit are respectively fixed by an upper section bar, a lower section bar and at least two frame section bars;

the upper section is of an upward convex structure and is provided with a first sealing connecting surface and a first fixing surface; the lower section is of a concave structure and is provided with a second sealing connecting surface and a second fixing surface; one frame section bar is provided with a third sealing connecting surface and a third fixing surface, and the other frame section bar is provided with a fourth sealing connecting surface and a fourth fixing surface; the first fixing surface and the second fixing surface are oppositely arranged, the upper direction and the lower direction of the sound insulation structure unit and the sound absorption structure unit are fixed, the third fixing surface and the fourth fixing surface are oppositely arranged, and the left direction and the right direction of the sound insulation structure unit and the sound absorption structure unit are fixed.

Furthermore, a first sealing connecting surface is arranged above the upper section bar, a first fixing surface is arranged below the upper section bar, a top sealing element mounting groove is formed in the middle of the first sealing connecting surface, and corner grooves are formed in the left side and the right side of the top sealing element mounting groove respectively; the left side and the right side of the first fixing surface are respectively provided with a sound absorption structure mounting groove and a sound insulation structure mounting groove with downward openings; the upper section bar can be a hollow aluminum alloy section bar, the width of the hollow aluminum alloy section bar is 60mm to 150mm, and the height of the hollow aluminum alloy section bar is 40mm to 70mm; the middle part of the hollow section is provided with an upper section middle support for increasing the strength of the upper section, and the wall thickness is 1.2mm-2.0mm.

Furthermore, a second fixing surface is arranged above the lower section bar, a second sealing connection surface is arranged below the lower section bar, the left side and the right side of the second fixing surface are respectively provided with a sound absorption structure mounting groove and a sound insulation structure mounting groove with upward openings, and the left side and the right side of the second sealing connection surface are respectively provided with an angle groove. The lower section can be a hollow aluminum alloy section with the width of 60mm to 150mm and the height of 40mm to 70mm; the middle part of the hollow section is provided with a lower section middle support for increasing the strength of the lower section, and the wall thickness is 1.2mm-2.0mm. A water drain hole is arranged in the lower section bar sound absorption structure mounting groove.

Furthermore, the inward side edge of the frame profile is a third fixing surface or a fourth fixing surface, the outward side edge of the frame profile is a third sealing connecting surface or a fourth fixing surface, the third fixing surface and the fourth fixing surface are provided with a sound absorption structure mounting groove and a sound insulation structure mounting groove, and the left side and the right side of the third sealing connecting surface and the fourth sealing connecting surface are respectively provided with an angle groove; the frame section bar is also provided with mounting grooves distributed all over the section bar sealing elements; the frame section can be a hollow aluminum alloy section, the width of the hollow aluminum alloy section is 60 mm-150 mm, and the height of the hollow aluminum alloy section is 40 mm-70 mm; the middle part of the hollow section bar is provided with an edge section bar middle support used for increasing the strength of the frame section bar, and the wall thickness is 1.2mm-2.0mm.

Furthermore, the sound insulation structure unit comprises a first back plate and a second back plate, a sound insulation cavity structure is formed between the first back plate and the second back plate, a group of sound insulation structure supporting pieces are evenly distributed in the sound insulation cavity structure, and the sound insulation structure supporting pieces divide the sound insulation cavity structure into a plurality of sound insulation cavity structure units. The first back plate and the second back plate are made of at least one of aluminum plates, steel plates, glass fiber reinforced plastics, sound insulation felts and the like.

Further, the sound absorption structure unit comprises a metal perforated panel and a sound absorption material, a sound absorption cavity structure is formed between the metal perforated panel and the sound absorption material, a group of sound absorption structure supporting pieces are uniformly distributed in the sound absorption cavity structure, and the sound absorption structure supporting pieces divide the sound absorption cavity structure into a plurality of sound absorption cavity structure units. The perforated rate of the perforated metal panel 201 ranges from 15% to 25%. The perforated hole pattern of the metal perforated panel is circular, the thickness of the panel is 1.0mm to 2.0mm, and the sound absorption material with the hole diameter of 2.0mm to 6.0mm is one or more of foamed aluminum, a particle sound absorption material, a high-molecular foamed sound absorption material and an acoustic metamaterial. The thickness of the sound absorption material is 8mm to 25mm, the fire-proof grade is more than B2, the water absorption rate is 5 percent to 10 percent, and the noise reduction coefficient NRC is 0.55 to 0.95.

Further, a corresponding top sealing element is arranged on the top sealing element mounting groove, a first tenon which faces downwards and corresponds to the top sealing element mounting groove is arranged on the top sealing element, and first sealing strips which correspond to the corner grooves extend towards the directions of the two sides of the top sealing element.

Further, acoustic structure sealing elements are arranged in the sound absorption structure mounting groove and the sound insulation structure mounting groove, and the acoustic structure sealing elements are provided with second tenons.

Further, an L-shaped member is connected with the corner groove; at least one screw hole is arranged on each edge of the L-shaped component, and the diameter of each screw hole is 4.0mm to 6.0mm. The corner groove connecting piece is made of one of aluminum alloy and zinc-nickel alloy.

The utility model provides a section bar combination formula metal sound barrier that excels in, includes the sound barrier unit group that constitutes by the sound barrier unit of a set of concatenation from top to bottom, and the left and right sides of sound barrier unit group is provided with the steel stand, and the top of sound barrier unit group is provided with the top apron. The upper convex structure of the upper section bar of the sound barrier unit plate and the concave structure of the lower section bar of the other sound barrier unit plate are correspondingly spliced in an occlusion shape, and a sealing element is arranged on the upper section bar for sealing.

Has the advantages that: compared with the prior art, the invention has the advantages that: (1) The sound barrier in the sectional material combination form can further improve the mechanical strength of the traditional sound barrier, increase the structural stability and improve the use safety;

(2) The invention uses a modularized mode to favorably divide the sound barrier into the section bar outer frame, the sound absorption structure unit and the sound insulation unit, thereby not only improving the production efficiency, but also solving the problem of convenience in later maintenance and replacement of the sound barrier;

(3) The invention uses high-performance acoustic structures (including sound absorption structures and sound insulation structures) to increase the protection effect on sensitive points.

(4) The sound absorption structure has the perforated panel, and has the characteristics of simple structure, simple and convenient installation and wide sound absorption frequency, and in addition, the non-fiber sound absorption material is used for solving the problems that the traditional sound barrier uses the sound absorption material with the environmental pollution caused by fibers such as glass wool, rock wool and the like, and the sound absorption material fails when the glass wool, the rock wool and the like are used for a long time in the outdoor environment; the invention has excellent absorption effect especially for middle and low frequency noise and has good inhibition effect for traffic noise;

(5) The sound insulation structure is a structure which is composed of metal plates and provided with at least one cavity, and the structure not only enables the sound barrier unit plate to have excellent sound insulation capability, but also enables the sound barrier unit plate to have excellent mechanical properties after the panel and the frame are combined;

(6) According to the invention, the rubber strip for vibration damping sealing is arranged on the cell plate through the mounting groove reserved in the sectional material, so that the stability, the attractiveness and the mounting simplicity of the rubber strip are effectively improved, and the stability of the sectional material of the sound barrier plate is ensured because no rivet is additionally arranged.

(7) The invention also provides a profile combined type high-strength metal sound barrier, and a frame structure of the profile combined type sound barrier, so that the sound barrier unit plate is ensured to have good mechanical properties including compression resistance, bending resistance, impact resistance and the like, and the stability of the sound barrier unit plate structure and the adaptability to use in various environments are also ensured; compared with the traditional method that plates are folded out to form the shell, the method has the advantages of being convenient to assemble, high in precision and good in flatness, and meanwhile, the later-stage maintenance and repair of the sound barrier are simple and convenient due to the adoption of a sectional material combined type mode.

Drawings

FIG. 1 is a schematic illustration of an installation of an embodiment of the present invention;

FIG. 2 is a schematic diagram of a cell plate according to an embodiment of the present invention;

FIG. 3 is a side view of a unit plate in an embodiment of the present invention;

FIG. 4 is a schematic view of the upper section bar in an embodiment of the present invention;

FIG. 5 is a schematic view of a lower section bar according to an embodiment of the present invention;

FIG. 6 is a schematic view of a frame profile according to an embodiment of the present invention;

FIG. 7 is a schematic view of a back plate assembly according to an embodiment of the present invention;

FIG. 7-1 is an enlarged view of a portion of a backing plate according to an embodiment of the present invention;

FIG. 8 is a schematic view of panel assembly according to an embodiment of the present invention;

FIG. 8-1 is an enlarged view of a portion of a panel in accordance with an embodiment of the present invention;

FIG. 9-1 is a schematic view of a seal mounted to an upper profile in an embodiment of the present invention;

FIG. 9-2 is a schematic view of an acoustic structural seal in accordance with an embodiment of the present invention;

FIGS. 9-3 are schematic views of edge mounted profile seals according to embodiments of the present invention;

FIG. 10-1 is a schematic view of a Chinese standard corner groove connector according to an embodiment of the present invention;

FIG. 10-2 is a schematic view of an European standard angle groove connector in accordance with an embodiment of the present invention;

FIG. 11-1 is a schematic view of the installation of the sealing members C1, C2 according to the embodiment of the present invention;

FIG. 11-2 is a schematic view of the installation of the sealing members C1, C3 in the embodiment of the present invention;

FIG. 12 is a schematic view of an acoustic structure installation in accordance with an embodiment of the present invention;

fig. 13 is a diagram of two sound barriers assembled according to the embodiment of the present invention.

The figure is marked with 1. The sound barrier unit plate; 2. a steel upright; 3. a top cover plate; A1. an upper section bar; A2. a lower section bar; a3, edge section bars; B1. a national standard corner groove connecting piece; B2. a European standard angle groove connecting piece; C1. a top seal; C2. an acoustic structure seal; C3. an edge profile seal; 101. an angular groove; 102. a top seal mounting groove; 103. a sound absorbing structure mounting groove; 104. a sound insulation structure mounting groove; 105. an acoustic structure seal mounting groove; 106. the middle part of the upper section bar is supported; 107. the middle part of the lower section bar is supported; 108. supporting the middle part of the edge section; 109. an edge section sealing element mounting groove; 201. a metal perforated panel; 202. a sound absorbing material; 203. a sound absorbing structural support; 204. a first back plate; 205. a second back plate; 206. a sound insulating structural support; 301. and (4) screw holes.

Detailed Description

The technical solution of the present invention is described in detail below with reference to the accompanying drawings, but the scope of the present invention is not limited to the embodiments.

Example 1

As shown in fig. 2 to 10-2, a sound barrier unit comprises a profile outer frame unit and an acoustic structure unit, wherein the acoustic structure unit is fixed on the profile outer frame unit, the profile outer frame unit comprises an upper profile, a lower profile and at least two frame profiles, and the upper profile A1, the lower profile A2 and at least two frame profiles A3 are fixed through an angle groove connecting piece B2; assembling a section outer frame unit;

the upper section A1 is of an upward convex structure and is provided with a first sealing connecting surface and a first fixing surface; the lower section A2 is of an inwards concave structure and is provided with a second sealing connecting surface and a second fixing surface; one frame section bar A3 is provided with a third sealing connecting surface and a third fixing surface, and the other frame section bar A3 is provided with a fourth sealing connecting surface and a fourth fixing surface; the first fixing surface and the second fixing surface are oppositely arranged, the upper direction and the lower direction of the sound insulation structure unit and the sound absorption structure unit are fixed, the third fixing surface and the fourth fixing surface are oppositely arranged, and the left direction and the right direction of the sound insulation structure unit and the sound absorption structure unit are fixed.

A first sealing connecting surface is arranged above the upper section bar, a first fixing surface is arranged below the upper section bar, a top sealing element mounting groove 102 is formed in the middle of the first sealing connecting surface, and corner grooves 101 are formed in the left side and the right side of the top sealing element mounting groove 102 respectively; the left side and the right side of the first fixing surface are respectively provided with a sound absorption structure mounting groove 103 with a downward opening and a sound insulation structure mounting groove 104; the upper section material is aluminum alloy, the width is 140mm, the thickness is 50mm, and the wall thickness is 1.5mm; the lower section is made of aluminum alloy, the width is 140mm, the thickness is 50mm, and the wall thickness is 1.5mm; the edge section is made of aluminum alloy, the width of the edge section is 140mm, and the thickness of the edge section is 40mm.

The upper portion of the lower section bar is a second fixing surface, the lower portion of the lower section bar is a second sealing connection surface, the left side and the right side of the second fixing surface are respectively provided with a sound absorption structure mounting groove 103 with an upward opening and a sound insulation structure mounting groove 104, and the left side and the right side of the second sealing connection surface are respectively provided with an angle groove 101. The lower section bar can be a hollow aluminum alloy section bar, the width of the hollow aluminum alloy section bar is 60mm to 150mm, and the height of the hollow aluminum alloy section bar is 40mm to 70mm; the middle part of the hollow section bar is provided with a lower section bar middle support 107 for increasing the strength of the lower section bar, and the wall thickness is 1.2mm-2.0mm. A drain hole is arranged in the lower section bar sound absorption structure mounting groove 103.

The inward side edge of the frame section bar A3 is a third fixing surface or a fourth fixing surface, the outward side edge of the frame section bar A3 is a third sealing connecting surface or a fourth fixing surface, the third fixing surface and the fourth fixing surface are provided with a sound absorption structure mounting groove 103 and a sound insulation structure mounting groove 104, and the left side and the right side of the third sealing connecting surface and the fourth sealing connecting surface are respectively provided with an angle groove 101; the frame section bar A3 is also provided with a mounting groove 109 distributed all over the section bar sealing element; the frame section can be a hollow aluminum alloy section, the width of the hollow aluminum alloy section is 60 mm-150 mm, and the height of the hollow aluminum alloy section is 40 mm-70 mm; the middle part of the hollow section bar is provided with an edge section bar middle support 108 for increasing the strength of the frame section bar, and the wall thickness is 1.2mm-2.0mm.

The sound insulation structure unit comprises a first back plate 204 and a second back plate 205, a sound insulation cavity structure is formed between the first back plate 204 and the second back plate 205, a group of sound insulation structure supporting pieces 206 are evenly distributed in the sound insulation cavity structure, and the sound insulation cavity structure is divided into a plurality of sound insulation cavity structure units by the sound insulation structure supporting pieces 206. The first back plate and the second back plate are made of aluminum alloy plates, and the thickness of the first back plate and the second back plate is 1.5mm. A hollow aluminum partition strip of the sound insulation structure supporting piece 206 is 15A in model, and the external sealant is butyl sealant.

The sound absorption structure unit comprises a metal perforated panel 201 and a sound absorption material 202, a sound absorption cavity structure is formed between the metal perforated panel 201 and the sound absorption material 202, a group of sound absorption structure supporting pieces 203 are uniformly distributed in the sound absorption cavity structure, and the sound absorption cavity structure is divided into a plurality of sound absorption cavity structure units by the sound absorption structure supporting pieces 203. The perforated rate of the perforated metal panel 201 ranges from 15% to 25%. The metal perforated panel 201 is made of aluminum alloy, the thickness of the metal perforated panel is 1.5mm, the hole opening aperture is 2.5mm, and the hole opening rate is 28%; the thickness of the ultramicropore foamed aluminum material 202 is 8mm, and the noise reduction coefficient of the cavity thickness with the thickness of 50mm is 0.60-0.95; the connecting piece 203 is a hollow aluminum spacer bar with the model of 12A, and the external sealant is butyl sealant. The sound absorption material is one or more of foamed aluminum, a particle sound absorption material, a high-molecular foamed sound absorption material and an acoustic metamaterial. The thickness of the sound absorption material is 8mm to 25mm, the fire-proof grade is more than B2, the water absorption rate is 5 percent to 10 percent, and the noise reduction coefficient NRC is 0.55 to 0.95.

The top sealing element mounting groove 102 is provided with a corresponding top sealing element C1, the top sealing element C1 is provided with a first tenon 401 which faces downwards and corresponds to the top sealing element mounting groove 102, and the top sealing element C1 extends towards the directions of two sides to form a first sealing strip 402 corresponding to the angular groove 101. An acoustic structure seal C2 is disposed in the sound absorbing structure mounting groove 103 and the sound insulating structure mounting groove 104, and the acoustic structure seal C2 has a second tenon 403. An L-shaped member of an angle groove connecting piece; three screw holes 301 are arranged on each edge of the L-shaped member, and the diameter of each screw hole is 4.0mm to 6.0mm.

Sealing elements C2 are arranged in the sound absorption member unit installation grooves 103 and the sound insulation structure units 104 on the upper section bars A1, the bottom section bars A2 and the side section bars A3; connect four corner slotsThe member B2 is arranged in the corner groove 101, after the side section bar A3 and the bottom section bar A2 are fixed, the sound absorption structure unit and the sound insulation structure unit are arranged in the mounting grooves corresponding to the assembled section bars, and the perforated panel 201 of the sound absorption structure unit faces the outside; installing the edge sealing element C3 in the installation groove 109 of the edge section bar; one side of each of the four corner groove connecting pieces B2 is fixed in the mounting grooves 101 at two ends of the upper section bar A1 through bolts, and the other end of each of the four corner groove connecting pieces B is fixed with the edge section bar A3; the top seal C1 is installed in the seal installation groove 102 of the upper profile. The noise reduction coefficient NRC of the assembled product is 0.60 to 0.95, and the weighted sound insulation quantity R _W 25dB to 35dB.

Example 2

The present example differs from example 1 in that:

the section outer frame unit consists of an upper section A1, a lower section A2 and an edge section A3 through an angle groove connecting piece B1. The upper section is made of aluminum alloy, the width is 80mm, the thickness is 45mm, and the wall thickness is 1.4mm; the lower section material is made of aluminum alloy, the width is 80mm, the thickness is 45mm, and the wall thickness is 1.4mm; the edge section is made of aluminum alloy, the width of the edge section is 80mm, and the thickness of the edge section is 33mm. The acoustic structure unit comprises a sound absorption structure unit and a sound insulation structure unit; the sound absorbing structural unit is formed by bonding a perforated panel 201 and a particulate sound absorbing material 202 by a bonding member 203 using a sealing adhesive. The perforated panel 201 is made of aluminum alloy, the thickness of the perforated panel is 1.5mm, the hole diameter of the perforated panel is 6.0mm, and the hole opening rate is 26%; the thickness of the particle sound absorption material 202 is 8mm, and the noise reduction coefficient is 0.50-0.85 when the thickness of a cavity with the thickness of 50mm is added; the connecting piece 203 is a hollow aluminum spacer strip with the model number of 10A, and the external sealant is butyl sealant. The sound insulation structure unit is formed by bonding a first layer of back plate 204 and a second layer of back plate 205 through a connecting piece 206 by using a sealant. The first layer of back plate and the second layer of back plate are made of aluminum alloy plates, and the thickness of the back plates is 1.5mm; the connecting piece 206 is a hollow aluminum spacer bar with the model of 12A, and the external sealant is butyl sealant.

Installing sealing elements C2 in the sound absorption member unit installation grooves 103 and the sound insulation structure units 104 on the upper section bars A1, the bottom section bars A2 and the side section bars A3; four corner groove connectors B1 are arranged in the corner groove 101, and the edge section A3 and the bottom are connectedAfter the section A2 is fixed, the sound absorption structure unit and the sound insulation structure unit are installed in the installation grooves corresponding to the assembled section, and the perforated panel 201 of the sound absorption structure unit faces the outer side; installing the edge sealing element C3 in the installation groove 109 of the edge section bar; one side of each of the four corner groove connecting pieces B1 is fixed in the mounting grooves 101 at two ends of the upper section bar A1 through bolts, and the other end of each of the four corner groove connecting pieces B1 is fixed with the edge section bar A3; the top seal C1 is installed in the seal installation groove 102 of the upper section bar. The noise reduction coefficient NRC of the assembled product is 0.60 to 0.85, and the weighted sound insulation quantity R _W 25dB to 32dB.

Example 3

As shown in figure 1, a section bar combination formula metal sound barrier that excels in, including the sound barrier unit group 1 that constitutes by the sound barrier unit of a set of concatenation from top to bottom, the left and right sides of sound barrier unit group 1 is provided with steel stand 2, and the top of sound barrier unit group 1 is provided with top apron 3.

As shown in fig. 13, the convex structure of the upper section bar of the sound barrier unit plate is correspondingly engaged with the concave structure of the lower section bar of another sound barrier unit plate, and the upper section bar is provided with a sealing member for sealing.

As noted above, while the present invention has been shown and described with reference to certain preferred embodiments, it is not to be construed as limited thereto. Various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. The utility model provides a sound barrier unit, includes section bar frame element and acoustics constitutional unit, acoustics constitutional unit is fixed in on the section bar frame element, its characterized in that: the profile outer frame unit comprises an upper profile, a lower profile and at least two frame profiles, wherein the upper profile (A1), the lower profile (A2) and the at least two frame profiles (A3) are fixed through corner groove connecting pieces; assembling a profile outer frame unit;

the acoustic structure unit comprises a sound insulation structure unit and a sound absorption structure unit, the sound insulation structure unit faces the noise reduction direction, and the sound absorption structure unit faces the noise source direction; the sound insulation structure unit and the sound absorption structure unit are respectively fixed by the upper section bar, the lower section bar and at least two frame section bars;

the upper section bar (A1) is of an upward convex structure and is provided with a first sealing connecting surface and a first fixing surface; the lower section bar (A2) is of a concave structure and is provided with a second sealing connecting surface and a second fixing surface; one frame section (A3) is provided with a third sealing connecting surface and a third fixing surface, and the other frame section (A3) is provided with a fourth sealing connecting surface and a fourth fixing surface; the first fixing surface and the second fixing surface are arranged oppositely, the upper direction and the lower direction of the sound insulation structure unit and the sound absorption structure unit are fixed, the third fixing surface and the fourth fixing surface are arranged oppositely, and the left direction and the right direction of the sound insulation structure unit and the sound absorption structure unit are fixed.

2. The sound barrier unit of claim 1, wherein: a first sealing connecting surface is arranged above the upper section, a first fixing surface is arranged below the upper section, a top sealing element mounting groove (102) is formed in the middle of the first sealing connecting surface, and corner grooves (101) are formed in the left side and the right side of the top sealing element mounting groove (102) respectively; and the left side and the right side of the first fixing surface are respectively provided with a sound absorption structure mounting groove (103) with a downward opening and a sound insulation structure mounting groove (104).

3. The sound barrier unit of claim 1, wherein: the upper portion of the lower portion sectional material is a second fixing surface, the lower portion of the lower portion sectional material is a second sealing connection surface, the left side and the right side of the second fixing surface are respectively provided with a sound absorption structure mounting groove (103) with an upward opening and a sound insulation structure mounting groove (104), and the left side and the right side of the second sealing connection surface are respectively provided with an angle groove (101).

4. The sound barrier unit of claim 1, wherein: the inward side edge of the frame profile (A3) is a third fixing surface or a fourth fixing surface, the outward side edge of the frame profile (A3) is a third sealing connecting surface or a fourth fixing surface, the third fixing surface and the fourth fixing surface are provided with a sound absorption structure mounting groove (103) and a sound insulation structure mounting groove (104), and the left side and the right side of the third sealing connecting surface and the fourth sealing connecting surface are respectively provided with an angle groove (101); the frame profile (A3) is further provided with mounting grooves (109) distributed all over the profile sealing elements.

5. A sound barrier unit according to claim 1, wherein: the sound insulation structure unit comprises a first back plate (204) and a second back plate (205), a sound insulation cavity structure is formed between the first back plate (204) and the second back plate (205), a group of sound insulation structure supporting pieces (206) are uniformly distributed in the sound insulation cavity structure, and the sound insulation cavity structure is divided into a plurality of sound insulation cavity structure units by the sound insulation structure supporting pieces (206).

6. A sound barrier unit according to claim 1, characterised in that: the sound absorption structure unit comprises a metal perforated panel (201) and a sound absorption material (202), a sound absorption cavity structure is formed between the metal perforated panel (201) and the sound absorption material (202), a group of sound absorption structure supporting pieces (203) are uniformly distributed in the sound absorption cavity structure, and the sound absorption cavity structure is divided into a plurality of sound absorption cavity structure units by the sound absorption structure supporting pieces (203); the range of the perforation rate of the metal perforated panel (201) is 15% -25%.

7. A sound barrier unit according to claim 2, wherein: the top sealing element mounting groove (102) is provided with a corresponding top sealing element (C1), the top sealing element (C1) is provided with a first tenon (401) which faces downwards and corresponds to the top sealing element mounting groove (102), and the top sealing element (C1) extends towards the directions of two sides to form a first sealing strip (402) corresponding to the corner groove (101).

8. A sound barrier unit according to any one of claims 3 and 4, characterised in that: and acoustic structure sealing pieces (C2) are arranged in the sound absorption structure mounting groove (103) and the sound insulation structure mounting groove (104), and the acoustic structure sealing pieces (C2) are provided with second tenons (403).

9. A sound barrier unit according to claim 1, wherein: the L-shaped member of the angle groove connecting piece; at least one screw hole (301) is provided on each side of the L-shaped member.

10. A profile combined type high-strength metal sound barrier comprising the sound barrier unit as claimed in any one of claims 1 to 9, wherein: the sound barrier unit comprises a sound barrier unit group (1) formed by a group of sound barrier units which are spliced up and down, wherein steel upright posts (2) are arranged on the left side and the right side of the sound barrier unit group (1), and a top cover plate (3) is arranged at the top of the sound barrier unit group (1); the convex structure of the upper section bar of the sound barrier unit plate is correspondingly spliced with the concave structure of the lower section bar of the other sound barrier unit plate in a meshing manner.