CN114086681A - Installation design structure of indoor acoustic board - Google Patents
Installation design structure of indoor acoustic board Download PDFInfo
- Publication number
- CN114086681A CN114086681A CN202111258837.2A CN202111258837A CN114086681A CN 114086681 A CN114086681 A CN 114086681A CN 202111258837 A CN202111258837 A CN 202111258837A CN 114086681 A CN114086681 A CN 114086681A
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- China
- Prior art keywords
- connecting piece
- limiting plate
- installation
- mounting groove
- sound absorption
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- 238000009434 installation Methods 0.000 title claims abstract description 46
- 238000010521 absorption reaction Methods 0.000 claims abstract description 20
- 239000011358 absorbing material Substances 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 125000003003 spiro group Chemical group 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
- E04B1/84—Sound-absorbing elements
- E04B1/86—Sound-absorbing elements slab-shaped
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
- E04B2001/8263—Mounting of acoustical elements on supporting structure, e.g. framework or wall surface
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
- E04B2001/8263—Mounting of acoustical elements on supporting structure, e.g. framework or wall surface
- E04B2001/8281—Flat elements mounted parallel to a supporting surface with an acoustically active air gap between the elements and the mounting surface
Landscapes
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Building Environments (AREA)
Abstract
The invention discloses an installation design structure of an indoor sound absorption board, which comprises a base layer, a connecting piece and a plurality of installation frame bodies, wherein the connecting piece comprises a first connecting piece and a second connecting piece, the first connecting piece is fixed on the base layer through a bolt, the second connecting piece is fixedly connected on the ground, the first connecting piece is provided with a first installation groove and a second installation groove, the installation frame bodies which are transversely arranged are connected on the first installation groove, the second connecting piece is provided with a third installation groove, two sides of the installation frame bodies which are vertically arranged are respectively connected in the second installation groove and the third installation groove, a plurality of sound absorption board modules are installed in the installation frame bodies, and the installation frame bodies are provided with fixing holes, a plurality of fixing plates, a plurality of first rotation limiting plates and a plurality of second rotation limiting plates. According to the invention, the first connecting piece and the second connecting piece are arranged, the mounting frame bodies are mounted on the first connecting piece and the second connecting piece, and the sound-absorbing board module is mounted in the mounting frame bodies.
Description
Technical Field
The invention belongs to the technical field of sound-absorbing boards, and particularly relates to an installation design structure of an indoor sound-absorbing board.
Background
As is known, sound-absorbing materials are generally installed on wall surfaces, and for small-space indoor spaces, sound-absorbing materials on vertical surfaces can completely meet the acoustic requirements.
Most of the existing sound-absorbing boards are mounted by adopting a method of pasting or dry hanging, and the top of the sound-absorbing board is directly pasted on a base layer or is grooved on the base layer.
If fluting on the basic unit, with wooden abatvoix joint in the inslot and fix it, the design of this structure has not only destroyed the wall body, influences the steadiness of whole wall body, and when the later stage was dismantled, was not good to it dismantles.
If directly paste it on the basic unit, the abatvoix receives the moisture of wall body easily, leads to the abatvoix to become damp and heavy, and in the time of serious, can lead to it to drop from the wall body even, pounces the people easily, has serious potential safety hazard, and the later stage when dismantling it, still need carry out whole whitewashing to the wall, in addition, paste the abatvoix of dismantling and can not carry out recycle to it, lead to the wasting of resources.
Disclosure of Invention
The invention aims to: the installation design structure of the indoor sound absorption plate is provided for solving the problems that the existing top layer sound absorption plate is pasted or grooved to be installed, the sound absorption plate is not easy to disassemble in the later stage and not good in stability, and potential safety hazards and resource waste are caused.
In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides an installation design structure of indoor abatvoix, includes basic unit, connecting piece and a plurality of installation framework, the connecting piece includes first connecting piece and second connecting piece, first connecting piece passes through the bolt fastening and is in the basic unit, second connecting piece fixed connection is subaerial, be provided with first mounting groove and second mounting groove on the first connecting piece, transverse arrangement the installation framework is connected on the first mounting groove, be provided with the third mounting groove on the second connecting piece, vertical arrangement the installation framework both sides are connected respectively the second mounting groove with in the third mounting groove, a plurality of abatvoix module mounting is in the installation framework, be provided with fixed orifices, a plurality of fixed plate, a plurality of first rotation spacing plate and a plurality of second rotation spacing plate in the installation framework.
As a further description of the above technical solution:
the mounting frame body penetrates through the fixing hole through a bolt to be fixedly connected to the connecting piece.
As a further description of the above technical solution:
first rotate spacing plate with the second rotates spacing plate and is regular horizontal arrangement, and is a plurality of the second rotates spacing plate and is located a plurality of first rotate between the spacing plate.
As a further description of the above technical solution:
the first rotating limiting plate comprises a first fixing shaft and a first limiting plate, and the first limiting plate is rotatably connected to the first fixing shaft.
As a further description of the above technical solution:
the second rotating limiting plate comprises a second fixing shaft and two second limiting plates, and the second limiting plates are rotatably connected to the second fixing shaft.
As a further description of the above technical solution:
the first rotating limiting plate, the second rotating limiting plate and the fixing plate are surrounded and blocked to form a mounting groove, and the sound-absorbing board module is mounted in the mounting groove.
As a further description of the above technical solution:
the first limiting plate and the second limiting plate are provided with first fixing holes, the sound-absorbing plate module is provided with a plurality of second fixing holes, the fixing plate is provided with a plurality of third fixing holes, and screws sequentially penetrate through the first fixing holes and the second fixing holes in threaded connection.
As a further description of the above technical solution:
and T-shaped limiting connecting pieces are arranged between the sound-absorbing plate modules.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
1. according to the structure, the first connecting piece is arranged at the bottom of the base layer, the second connecting piece is arranged on the ground, the mounting frame bodies are mounted on the first connecting piece and the second connecting piece, and the sound-absorbing board modules are mounted in the mounting frame bodies.
2. In the invention, the installation of the sound-absorbing plate module is completed by arranging a first rotation limiting plate and a second rotation limiting plate in the installation frame, wherein the first rotation limiting plate comprises a first fixed shaft and a first limiting plate, the first limiting plate is rotationally connected on the first fixed shaft, the second rotation limiting plate comprises a second fixed shaft and a second limiting plate, the two second limiting plates are respectively rotationally connected on two sides of the second fixed shaft, the fixing plate is provided with the relative positions of the first rotation limiting plate and the second rotation limiting plate, the sound-absorbing plate module is placed in the installation groove by respectively rotating the first limiting plate and the second limiting plate, then screws sequentially pass through a first fixing hole on the first limiting plate or the second limiting plate and a second fixing hole on the sound-absorbing plate module, and are in threaded connection with a third fixing hole on the fixing plate, easy to assemble, convenient dismantlement, the later stage can be through dismantling the screw, accomplishes the dismantlement of whole sound absorption plate body, carries out recycle to it.
3. According to the invention, the T-shaped limiting connecting piece is arranged and inserted between the sound-absorbing board modules, and two sides of the T-shaped limiting connecting piece are pressed on the inner side walls of the first limiting plate and the second limiting plate, so that the sound-absorbing board modules are limited and fixed up, down, left and right, and the sound-absorbing board is prevented from being displaced due to external factors to influence the indoor sound-insulating effect and influence the aesthetic property of the whole decoration.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a front view of a mounting design structure of an indoor sound-absorbing panel.
Fig. 2 is a schematic structural view of an acoustic panel module in a mounting design structure of an indoor acoustic panel.
Fig. 3 is a sectional view of a mounting frame body in a mounting design structure of an indoor sound absorption plate.
Fig. 4 is a schematic structural diagram of a T-shaped limiting connecting piece in an installation design structure of an indoor sound absorption plate.
Illustration of the drawings:
1-a base layer; 2-a connector; 21-a first connector; 22-a second connector; 3-mounting a frame body; 4-a first mounting groove; 5-a second mounting groove; 6-a third mounting groove; 7-a sound-absorbing panel module; 8-a fixation hole; 9-fixing the plate; 10-a first rotational limit plate; 101-a first fixed shaft; 102-a first limiting plate; 11-a second rotation limiting plate; 111-a second fixed axis; 112-a second limiting plate; 12-mounting grooves; 13-a first fixation hole; 14-a second fixation hole; 15-a third fixation hole; 16-a screw; 17-T-shaped limit connecting piece.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the embodiments of the present invention, it should be noted that the terms "upper", "inner", and the like refer to orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that are conventionally arranged when the products of the present invention are used, and are used only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1-4, the present invention provides a technical solution: an installation design structure of an indoor sound absorption plate comprises a base layer 1, connecting pieces 2 and a plurality of installation frame bodies 3, the connecting piece 2 comprises a first connecting piece 21 and a second connecting piece 22, the first connecting piece 21 is fixed on the base layer 1 through bolts, the second connecting piece 22 is fixedly connected on the ground, the first connecting piece 21 is provided with a first mounting groove 4 and a second mounting groove 5, the transversely arranged mounting frame body 3 is connected on the first mounting groove 4, the second connecting piece 22 is provided with a third mounting groove 6, two sides of the mounting frame body 3 which is vertically arranged are respectively connected in the second mounting groove 5 and the third mounting groove 6, a plurality of sound-absorbing board modules 7 are mounted in the mounting frame body 3, the mounting frame body 3 is provided with a fixing hole 8, a plurality of fixing plates 9, a plurality of first rotation limiting plate pieces 10 and a plurality of second rotation limiting plate pieces 11. The structure integrates the vertical face and the top face of an indoor sound-absorbing board module, avoids the instability of a wall body caused by slotting and clamping the sound-absorbing board module in a top wall in the prior art, also avoids the phenomenon that the sound-absorbing board module is pasted on the top wall to cause damp and fall, and has safety risk, and meanwhile, the installation structure is provided with a first rotation limiting plate and a second rotation limiting plate in the installation frame, wherein the first rotation limiting plate comprises a first fixed shaft and a first limiting plate, the first limiting plate is rotationally connected on the first fixed shaft, the second rotation limiting plate comprises a second fixed shaft and a second limiting plate, and the two second limiting plates are respectively rotationally connected on two sides of the second fixed shaft, the fixed plate is provided with the relative position that first rotation spacing plate and second rotated spacing plate, respectively through rotating first limiting plate and second limiting plate, place the abatvoix module in the mounting groove, then pass the first fixed orifices on first limiting plate or the second limiting plate in proper order with the screw, the second fixed orifices on the abatvoix module, and with the third fixed orifices of its spiro union on the fixed plate, thereby accomplish the installation of abatvoix module, the design of this structure, easy to assemble, convenient to detach, the later stage can be through dismantling the screw, accomplish the dismantlement of whole abatvoix body, recycle it.
The mounting frame body 3 is fixedly connected to the connecting piece 2 through bolts penetrating through the fixing holes 8. The stability of being connected between installation framework and the connecting piece is guaranteed.
First rotation limiting plate 10 with second rotation limiting plate 11 is regular horizontal arrangement, and is a plurality of second rotation limiting plate 11 is located a plurality of between the first rotation limiting plate 10. The first rotating limiting plate is one-way limiting, the second rotating limiting plate is two-way limiting, and the sound-absorbing board module is guaranteed to be limited and fixed in the mounting groove by the aid of the structural design.
The first rotation limiting plate 10 comprises a first fixing shaft 101 and a first limiting plate 102, and the first limiting plate 102 is rotatably connected to the first fixing shaft 101. And limiting and fixing one side of the sound absorption plate module at the outermost side.
The second rotation limiting plate 11 includes a second fixing shaft 111 and two second limiting plates 112, and the second limiting plates 112 are rotatably connected to the second fixing shaft 111. And limiting and fixing the sound-absorbing board modules adjacent to each other in the middle.
The first rotating limiting plate 10, the second rotating limiting plate 11 and the fixing plate 9 are surrounded to form a mounting groove 12, and the sound-absorbing board module 7 is mounted in the mounting groove 12. Guarantee the steadiness of abatvoix module installation in the mounting groove.
T-shaped limiting connecting pieces 17 are arranged between the sound-absorbing plate modules 7. The T-shaped limiting connecting piece is connected between the sound-absorbing board modules in an inserted mode, the two sides of the T-shaped limiting connecting piece are pressed on the inner side walls of the first limiting plate and the second limiting plate, the sound-absorbing board modules are guaranteed to be fixed in a limiting mode from top to bottom, displacement of the sound-absorbing board due to external factors is avoided, indoor sound insulation effect is affected, and meanwhile the attractiveness of overall decoration is affected.
The working principle is as follows: the structure integrates the vertical face and the top face of an indoor sound-absorbing board module, avoids the instability of a wall body caused by slotting and clamping the sound-absorbing board module in a top wall in the prior art, also avoids the phenomenon that the sound-absorbing board module is pasted on the top wall to cause damp and fall, and has safety risk, and meanwhile, the installation structure is provided with a first rotation limiting plate and a second rotation limiting plate in the installation frame, wherein the first rotation limiting plate comprises a first fixed shaft and a first limiting plate, the first limiting plate is rotationally connected on the first fixed shaft, the second rotation limiting plate comprises a second fixed shaft and a second limiting plate, and the two second limiting plates are respectively rotationally connected on two sides of the second fixed shaft, the fixed plate is provided with the relative position that first rotation spacing plate and second rotated spacing plate, respectively through rotating first limiting plate and second limiting plate, place the abatvoix module in the mounting groove, then pass the first fixed orifices on first limiting plate or the second limiting plate in proper order with the screw, the second fixed orifices on the abatvoix module, and with the third fixed orifices of its spiro union on the fixed plate, thereby accomplish the installation of abatvoix module, the design of this structure, easy to assemble, convenient to detach, the later stage can be through dismantling the screw, accomplish the dismantlement of whole abatvoix body, recycle it.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (8)
1. The utility model provides an installation design structure of indoor abatvoix, its characterized in that includes basic unit (1), connecting piece (2) and a plurality of installation framework (3), connecting piece (2) include first connecting piece (21) and second connecting piece (22), first connecting piece (21) pass through the bolt fastening on basic unit (1), second connecting piece (22) fixed connection is subaerial, be provided with first mounting groove (4) and second mounting groove (5) on first connecting piece (21), transversely arrange install framework (3) connect on first mounting groove (4), be provided with third mounting groove (6) on second connecting piece (22), vertically arrange installation framework (3) both sides connect respectively in second mounting groove (5) and third mounting groove (6), a plurality of abatvoix module (7) are installed in installation framework (3), the mounting frame body (3) is provided with a fixing hole (8), a plurality of fixing plates (9), a plurality of first rotating limiting plate pieces (10) and a plurality of second rotating limiting plate pieces (11).
2. An installation design structure of an indoor sound absorption board as claimed in claim 1, wherein the installation frame body (3) is fixedly connected to the connecting piece (2) by passing through the fixing hole (8) through a bolt.
3. An installation design structure of indoor sound absorption board as claimed in claim 2, wherein the first rotation limiting plate (10) and the second rotation limiting plate (11) are arranged regularly and horizontally, and a plurality of the second rotation limiting plates (11) are located between a plurality of the first rotation limiting plates (10).
4. A mounting design structure of indoor acoustic board according to claim 3, characterized in that, the first rotation limiting plate (10) includes a first fixed shaft (101) and a first limiting plate (102), and the first limiting plate (102) is rotatably connected on the first fixed shaft (101).
5. An indoor sound absorption panel mounting design structure as claimed in claim 4, wherein the second rotation limiting plate member (11) comprises a second fixed shaft (111) and two second limiting plates (112), and the second limiting plates (112) are rotatably connected to the second fixed shaft (111).
6. An installation design structure of an indoor sound absorption board as claimed in claim 5, wherein a mounting groove (12) is formed by enclosing between the first rotation limiting plate (10), the second rotation limiting plate (11) and the fixing plate (9), and the sound absorption board module (7) is installed in the mounting groove (12).
7. An installation design structure of an indoor sound absorption board according to claim 6, wherein the first limiting plate (102) and the second limiting plate (112) are both provided with a first fixing hole (13), the sound absorption board module (7) is provided with a plurality of second fixing holes (14), the fixing plate (9) is provided with a plurality of third fixing holes (15), and screws (16) sequentially penetrate through the first fixing hole (13) and the second fixing holes (14) and are screwed in the third fixing holes (15).
8. An installation design structure of an indoor sound absorption board as claimed in claim 1, wherein T-shaped spacing connecting pieces (17) are arranged between the sound absorption board modules (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111258837.2A CN114086681A (en) | 2021-10-27 | 2021-10-27 | Installation design structure of indoor acoustic board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111258837.2A CN114086681A (en) | 2021-10-27 | 2021-10-27 | Installation design structure of indoor acoustic board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114086681A true CN114086681A (en) | 2022-02-25 |
Family
ID=80298152
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111258837.2A Pending CN114086681A (en) | 2021-10-27 | 2021-10-27 | Installation design structure of indoor acoustic board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114086681A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7063184B1 (en) * | 2002-06-12 | 2006-06-20 | Lahnie Johnson | Sound reducing panel |
| CN208122008U (en) * | 2017-12-28 | 2018-11-20 | 科信达（天津）实业股份有限公司 | A kind of compound perforated sound-absorbing plate of outside-cover-type |
| CN210195366U (en) * | 2019-06-26 | 2020-03-27 | 四川中丹合创环保科技有限公司 | Monitoring station structure |
| CN111021565A (en) * | 2020-02-25 | 2020-04-17 | 四川贝强声学工程有限公司 | Dismantle convenient repeatedly usable sound insulation unit |
| CN213773024U (en) * | 2020-05-21 | 2021-07-23 | 黑龙江京诚检测技术有限公司 | Noise reduction barrier for railway |
-
2021
- 2021-10-27 CN CN202111258837.2A patent/CN114086681A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7063184B1 (en) * | 2002-06-12 | 2006-06-20 | Lahnie Johnson | Sound reducing panel |
| CN208122008U (en) * | 2017-12-28 | 2018-11-20 | 科信达（天津）实业股份有限公司 | A kind of compound perforated sound-absorbing plate of outside-cover-type |
| CN210195366U (en) * | 2019-06-26 | 2020-03-27 | 四川中丹合创环保科技有限公司 | Monitoring station structure |
| CN111021565A (en) * | 2020-02-25 | 2020-04-17 | 四川贝强声学工程有限公司 | Dismantle convenient repeatedly usable sound insulation unit |
| CN213773024U (en) * | 2020-05-21 | 2021-07-23 | 黑龙江京诚检测技术有限公司 | Noise reduction barrier for railway |
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Application publication date: 20220225 |
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