Folded plate buckling type railway sound barrier metamaterial unit plate

Abstract

The utility model discloses a folded plate buckling type railway sound barrier metamaterial unit plate, which comprises two adjacent panels, a box body is clamped in the panels, a first sound nest and a second sound nest are clamped in the box body, one side of each panel is clamped with a back plate, and the other side of each panel is clamped with a baffle plate. A first positioning groove and a second positioning groove are formed in the outer walls of the two sides of the face plate respectively, positioning folded plates are arranged at the positions, corresponding to the second positioning groove, of the outer walls of the two sides of the back plate, and the positioning folded plates are clamped in the second positioning groove. According to the utility model, a rivet-free buckling structure is designed, the structure is not easy to deform, the anti-fatigue life is long, the metamaterial sound absorption assembly is easy to assemble and can be disassembled and replaced, the metamaterial sound absorption assembly composed of the sound pits with different sizes is designed, and sound waves are guided to be reflected for multiple times inside through the sound pits, so that the propagation path of the sound waves is increased, and the energy of the sound waves is reduced; and the sound waves of different sound pits can be interfered and offset, so that the noise reduction effect is improved, and the advantages of large sound insulation amount and broadband noise reduction are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of noise reduction, and specifically relates to a folded plate buckling type railway sound barrier super material unit plate. BACKGROUND

[0002] With the rapid development of railway transportation, especially the popularization of high-speed railway, the train operation speed is greatly improved, which also brings more serious noise pollution problems. The noise generated by train operation mainly includes wheel-rail noise, air dynamic noise, power collection system noise and the like. These noise sources are enhanced with the increase of train speed, causing different degrees of interference to sensitive areas along the railway. With the continuous improvement of environmental protection consciousness, people pay more and more attention to environmental protection and ecological balance. While the railway transportation is developing rapidly, how to effectively control the noise pollution and protect the living environment and natural ecology of the residents along the railway has become a problem to be solved. As an effective noise reduction measure, the sound barrier is widely used in noise control along the railway. The railway sound barrier unit plate, as an important part of the sound barrier system, has the functions of absorbing, reflecting or scattering noise, and can effectively reduce the influence of noise generated by train operation on the surrounding environment. Through scientific and reasonable design and material selection, the sound barrier unit plate can form a barrier on the noise propagation path to block the propagation of noise, thereby achieving the purpose of noise reduction.

[0003] The invention patent with the patent number "CN105803966A" discloses a railway sound barrier structure, which is mainly composed of a plurality of railway sound barrier unit plates. The railway sound barrier unit plate is composed of an aluminum alloy shell and a light sound absorption plate. The aluminum alloy shell is composed of a bottom aluminum profile, a top aluminum profile, two end aluminum profiles and a U-shaped panel. The top aluminum profile is placed above the U-shaped panel. The railway sound barrier structure uses rivets to fix the U-shaped panel and the web. The installation is relatively complicated, the overall structure is complex, and the noise reduction and sound absorption are performed through the light sound absorption plate. The sound insulation effect in the wide frequency noise field is poor.

[0004] The existing railway sound barrier has the following defects: 1. The traditional sound barrier unit plate is designed to be too complex, contains too many connecting parts and levels, and is not stable enough in structure, which is prone to deformation under environmental factors such as wind pressure and temperature change, affecting the noise reduction effect and structural safety, and having a short service life; 2. The sound insulation effect is poor, the sound insulation amount is small, and the noise generated by train operation cannot be effectively blocked, especially in the isolation of high-frequency noise. UTILITY MODEL CONTENTS

[0005] The utility model aims at overcoming the above problems or at least partially solving the above problems, and provides a folded plate buckling type railway sound barrier super material unit plate.

[0006] To achieve the above object, the utility model discloses the following technical scheme: a kind of fold plate buckling formula railway sound barrier super material unit board, including two adjacent panels, the panel is clamped with box body, the box body is clamped with first sound nest and second sound nest, the side of panel is clamped with backboard, the two sides outer wall of panel is respectively provided with first positioning slot and second positioning slot, the position of the two sides outer wall of backboard is provided with positioning fold plate corresponding second positioning slot, and positioning fold plate is clamped in second positioning slot.

[0007] In a preferred embodiment, the two sides outer wall of the box body is provided with clamping block, the outer wall of the panel is provided with first buckle corresponding the position of clamping block, and clamping block is clamped in first buckle.

[0008] In a preferred embodiment, the one end of the first sound nest and second sound nest is provided with positioning plate, the inner wall of the side of box body is provided with second buckle corresponding the position of positioning plate, and positioning plate is clamped on second buckle.

[0009] In a preferred embodiment, the panel is provided with first concave groove, and the backboard is provided with second concave groove.

[0010] In a preferred embodiment, the two sides of the panel are provided with side plate.

[0011] In a preferred embodiment, the outer wall of the side of the panel and backboard is provided with rubber between plate column.

[0012] In a preferred embodiment, the inner side of the two adjacent panels is provided with rubber between plate, the rubber between plate is provided with first positioning ring, and first positioning ring is buckled in first positioning slot and second positioning slot of corresponding position.

[0013] In a preferred embodiment, the bottom end of the panel at bottom is provided with decoupling rubber, the decoupling rubber is provided with second positioning ring, and second positioning ring is buckled in first positioning slot and second positioning slot of corresponding position.

[0014] In a preferred embodiment, the inner wall of the backboard is provided with damping rubber.

[0015] In a preferred embodiment, the two ends of the panel are close to damping rubber.

[0016] Compared with the prior art, the utility model provides a kind of fold plate buckling formula railway sound barrier super material unit board, rivetless buckling structure is designed, and it is simple and stable, and it is not easy to deform structure fatigue life is high, it has the advantages of simple assembly and detachable replacement, and super material sound absorption assembly is designed with different sizes of sound hole, sound wave is guided to occur multiple reflections inside by sound hole, to increase the propagation path of sound wave, reduce its energy, and different sound waves will occur interference phenomenon, when the phase difference of these sound waves is integer multiple wavelength, they will offset each other, by reasonably designing the shape and arrangement of sound hole, as many sound waves as possible can be interfered and offset in target frequency range, to improve the noise reduction effect, with the advantages of large sound insulation and wideband noise reduction. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the three-dimensional structure schematic diagram of the utility model;

[0018] Figure 2 It is the main view structure schematic diagram of the utility model;

[0019] Figure 3 It is the main view cut structure schematic diagram of the utility model;

[0020] Figure 4 It is Figure 3 It is the enlarged structure schematic diagram of A in the middle;

[0021] Figure 5 It is the main view structure schematic diagram of panel in the utility model;

[0022] Figure 6 It is the main view structure schematic diagram of backboard in the utility model;

[0023] Figure 7 It is the main view structure schematic diagram of the first sound hole of the utility model;

[0024] Figure 8 It is the main view structure schematic diagram of the second sound hole of the utility model;

[0025] Figure 9 It is the main view structure schematic diagram of the rubber between board of the utility model;

[0026] Figure 10 It is the main view structure schematic diagram of the decoupling rubber of the utility model;

[0027] Figure 11 It is the structure explosion map of the utility model.

[0028] In the figure: 1, panel; 11, first positioning groove; 12, second positioning groove; 13, first concave groove; 14, first buckle; 2, back plate; 21, positioning flap; 22, second concave groove; 3, damping rubber; 4, side plate; 5, box body; 51, second buckle; 52, clamping block; 6, first sound hole; 7, second sound hole; 71, positioning plate; 8, inter-column rubber; 9, inter-plate rubber; 91, first positioning ring; 10, decoupling rubber; 101, second positioning ring. DETAILED DESCRIPTION

[0029] The utility model will be further explained in detail below in combination with the drawings.

[0030] The specific embodiment is only an explanation of the utility model, and it is not a limitation of the utility model. Those skilled in the art can make creative contributions to the modification of the embodiment according to the needs after reading the description, but as long as it is within the scope of the claims of the utility model, it is protected by the patent law.

[0031] The utility model discloses a folding plate buckling type railway sound barrier metamaterial unit plate, solve the technical problem in the prior art, the general idea is as follows:

[0032] Embodiment one:

[0033] Please refer to Figures 1-11 A folding plate buckling type railway sound barrier metamaterial unit plate, comprising two adjacent panels 1, the panel 1 is provided with a box body 5, the box body 5 is provided with a first sound hole 6 and a second sound hole 7, the panel 1 is provided with a back plate 2 on one side, the two outer walls of the panel 1 are respectively provided with a first positioning groove 11 and a second positioning groove 12, the two outer walls of the back plate 2 are provided with a positioning flap 21 at the position corresponding to the second positioning groove 12, and the positioning flap 21 is clamped in the second positioning groove 12, the two sides of the panel 1 are provided with a side plate 4, the back plate 2 is bent into shape by 2mm thick aluminum plate, and the panel 1 is used to form a unit shell, the side plate 4 is pressed into a bent buckle structure by 2mm thick aluminum plate, and is used to close the sound barrier unit.

[0034] In specific implementation, the two outer walls of the box body 5 are provided with clamping blocks 52, the outer wall of the panel 1 is provided with a first buckle 14 at the position corresponding to the clamping block 52, and the clamping block 52 is clamped in the first buckle 14.

[0035] In specific implementation, the first sound hole 6 and the second sound hole 7 are provided with a positioning plate 71 at one end, the inner wall of the box body 5 is provided with a second buckle 51 at the position corresponding to the positioning plate 71, and the positioning plate 71 is clamped on the second buckle 51.

[0036] In specific implementation, the first concave groove 13 is arranged on the panel 1, and the second concave groove 22 is arranged on the back plate 2, and the first concave groove 13 and the second concave groove 22 are used to form a sound cavity, thereby improving the noise reduction effect.

[0037] In specific implementation, the inter-panel rubber 8 is arranged on one side of the panel 1 and the back plate 2, and the inter-panel rubber 8 is used for damping and buffering between the unit panels, thereby avoiding the formation of a sound bridge between the unit panels.

[0038] In specific implementation, the inter-panel rubber 9 is arranged on the inner side of the two adjacent panels 1, the first positioning ring 91 is arranged on the inter-panel rubber 9, and the first positioning ring 91 is buckled in the first positioning groove 11 and the second positioning groove 12 at the corresponding position, and the inter-panel rubber 9 is used for assembling the plurality of panels 1.

[0039] In specific implementation, the decoupling rubber 10 is arranged at the bottom end of the panel 1 at the bottom, the second positioning ring 101 is arranged on the decoupling rubber 10, and the second positioning ring 101 is buckled in the first positioning groove 11 and the second positioning groove 12 at the corresponding position, and the decoupling rubber 10 is used for placing the sound barrier unit.

[0040] In specific implementation, the damping rubber 3 is arranged on the inner side wall of the back plate 2, and the two ends of the panel 1 are tightly attached to the damping rubber 3, the damping rubber 3 adopts a double-layer design with a thickness of 4mm, and plays a role of sound insulation and vibration isolation.

[0041] The detailed connection means is a known technology in the art, and the working principle and process are mainly introduced below, and the specific work is as follows:

[0042] When the sound barrier unit is assembled, first, the first sound hole 6 and the second sound hole 7 are sequentially placed in the box body 5, the positioning plate 71 is clamped into the second buckle 51 to fix the sound hole, and the sound barrier unit is formed, the sound hole is made of 0.5mm thick super micro-porous aluminum plate material, the perforation rate is 1.06%, and the pore size is 0.25mm, the box body 5 is made of 0.8mm thick super micro-porous aluminum plate bending forming, the perforation rate is 1.06%, and the pore size is 0.35mm, the box body 5 is pushed onto the panel 1, the clamping block 52 is buckled into the first buckle 14 from one side, the panel 1 is made of 1.5mm thick super micro-porous aluminum plate bending forming, the perforation rate is 20-30%, and the pore size is greater than or equal to 0.6mm, the back plate 2 is buckled on the panel 1, the positioning bending plate 21 is buckled into the second positioning groove 12 to be positioned, the back plate 2 is made of 2mm thick aluminum plate bending forming, the damping rubber 3 is attached to the inner side of the back plate 2, the damping rubber 3 is designed as a double layer with a thickness of 4mm, and the damping rubber 3 plays a role of sound insulation and vibration isolation, then the side plate 4 is fixed on both sides of the unit, the side plate 4 is made of 2mm thick aluminum plate pressing bending buckle plate structure, and the sound barrier unit is assembled, according to requirements, the sound barrier unit is composed of the sound barrier super material unit plate, the units are assembled through the inter-plate rubber 9, the inter-plate rubber 9 is positioned by being buckled into the first positioning groove 11 and the second positioning groove 12 of the upper and lower panels 1 through the first positioning ring 91, the bottommost unit is placed on the ground through the decoupling rubber 10, and the decoupling rubber 10 is positioned by being clamped into the first positioning groove 11 and the second positioning groove 12 on the bottommost unit through the second positioning ring 101, and a plurality of layers of barriers can also be built, wherein the inter-plate rubber 8 is used for damping and buffering between the unit plates to avoid the formation of a sound bridge between the sound barrier unit plates;

[0043] In the use process, the panel 1 is arranged on both sides of the railway, when noise sound waves meet the sound barrier, part of the sound waves is reflected back, and another part of the sound waves is guided in the sound hole to occur multiple reflections, so that the propagation path of the sound waves is increased, the energy of the sound waves is reduced, different sizes of the first sound hole 6 and the second sound hole 7 are arranged, the sound waves from different sound holes will interfere, when the phase difference of the sound waves is an integer multiple of the wavelength, the sound waves will cancel each other out, through reasonable design of the shape and arrangement mode of the sound hole, as many sound waves as possible in the target frequency range can be interfered and cancelled out, so that the noise reduction effect is improved, the purpose of wide frequency noise reduction is achieved, the 33mm cavity formed on both sides of the first concave groove 13 and the second concave groove 22 has a specific resonance frequency, when the frequency of the incident sound wave is close to or equal to the resonance frequency of the cavity, the sound wave will produce resonance in the cavity, so that the sound wave energy is converted into other forms of energy, and the effect of noise reduction is achieved.

[0044] The above description of the embodiments is for facilitating the ordinary skilled in the art to understand and use the present application, and the person skilled in the art can easily make various modifications to the embodiments, and apply the general principles described herein to other embodiments without creative labor, therefore, the present application is not limited to the above embodiments, the improvements and modifications made by the person skilled in the art according to the disclosure of the present application without departing from the scope of the present application should be within the protection scope of the present application.

Claims

1. A folded plate docking railway sound barrier metamaterial unit panel, characterized by: The utility model provides a sound box, including two adjacent panels (1), the panel (1) is inserted with box (5) in, the box (5) is inserted with first sound hole (6) and second sound hole (7) in, the panel (1) is inserted with backboard (2) on one side, first locating groove (11) and second locating groove (12) are arranged on the two sides outer wall of panel (1) respectively, the backboard (2) is provided with locating flaps (21) on the two sides outer wall corresponding the position of second locating groove (12), and locating flaps (21) are inserted in second locating groove (12).

2. The metamaterial unit panel of the folded-panel-attaching type for a railway sound barrier according to claim 1, characterized by: The both sides outer wall of box (5) is provided with clamping block (52), and the outer wall of panel (1) is provided with first buckle (14) corresponding the position of clamping block (52), and clamping block (52) is inserted in first buckle (14).

3. The metamaterial unit panel for a folded-panel coalesce railway sound barrier according to claim 2, characterized in that: The one end of first sound hole (6) and second sound hole (7) is provided with locating plate (71), and the inner wall of one side of box (5) is provided with second buckle (51) corresponding the position of locating plate (71), and locating plate (71) is inserted on second buckle (51).

4. The metamaterial unit panel of a folded-panel-attaching type railway sound barrier according to claim 3, characterized in that: The panel (1) is provided with first recessed groove (13), and the backboard (2) is provided with second recessed groove (22).

5. The metamaterial unit panel for a folded-panel coUapsed railway sound barrier according to claim 4, wherein: The both sides of panel (1) are provided with side plate (4).

6. A metamaterial unit panel for a folded plate coalesce railway sound barrier according to claim 5, wherein: The outer wall of one side of panel (1) and backboard (2) is provided with rubber (8) between board column.

7. The metamaterial unit panel of a folded-panel-attaching type railway sound barrier according to claim 6, characterized in that: The inner side of two adjacent panel (1) is provided with rubber (9) between board, and the rubber (9) between board is provided with first locating ring (91), and first locating ring (91) is buckled in first locating groove (11) and second locating groove (12) of corresponding position.

8. The metamaterial unit panel of a folded-panel-attaching type railway sound barrier according to claim 7, characterized in that: The bottom end of panel (1) at bottom is provided with decoupling rubber (10), and the decoupling rubber (10) is provided with second locating ring (101), and second locating ring (101) is buckled in first locating groove (11) and second locating groove (12) of corresponding position.

9. The metamaterial unit panel of a folded-panel-attaching type railway sound barrier according to claim 8, characterized in that: The inner wall of backboard (2) is provided with damping rubber (3).

10. The metamaterial unit panel for a folded-panel coUapsed railway sound barrier according to claim 9, wherein: The both ends of panel (1) are close to damping rubber (3).

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