Impact-resistant enhanced sound barrier

Abstract

The utility model relates to an impact-resistant enhanced sound barrier which comprises a sound insulation unit and a frame structure, a groove is formed in the frame structure to contain the sound insulation unit, a buffer layer is arranged on the inner side of the groove, and the buffer layer comprises a first buffer layer covering the bottom face of the groove and a second buffer layer covering the side face of the groove. The surface of one side, back to the groove, of the second buffer layer is provided with a protruding part. The buffer layer is arranged between the sound insulation unit and the groove of the frame structure, the protruding part is arranged on the contact face of the sound insulation unit and the buffer layer, the sliding resistance of the sound insulation unit relative to the frame structure is improved by increasing the contact area between the sound insulation unit and the frame structure, and the good fixing effect is achieved; and the possibility that the sound insulation unit falls off from the frame structure is reduced.

Description

Technical Field

[0001] This application relates to the field of sound barrier technology, specifically to an impact-resistant enhanced sound barrier. Background Art

[0002] Sound barriers are an effective means of mitigating urban traffic noise pollution and have been widely used on elevated roads and rail transit near residential areas. When noise waves encounter a sound barrier, the barrier absorbs, reflects, and diffracts the noise, significantly reducing its impact on residential areas. With urban development, the conflict between convenient transportation and road noise is becoming increasingly prominent. Therefore, as the number of high-rise residential buildings in major urban areas increases, the demand for sound barriers in China is also growing rapidly.

[0003] However, a current problem is that in traffic accidents, when a sound barrier is struck by a vehicle, the sound insulation units may partially or completely detach from the frame and fall off. This is mainly because the connection between the sound insulation units and the frame lacks effective mechanical restraint, making them prone to failure under strong external impacts and increasing safety hazards. Utility Model Content

[0004] To address the aforementioned technical problems, this application provides an impact-resistant reinforced sound barrier. By increasing the contact area between the sound insulation unit and the frame structure, the sliding resistance of the sound insulation unit relative to the frame structure is improved, achieving a better fixing effect and reducing the possibility of the sound insulation unit falling off the frame structure.

[0005] To address the aforementioned technical problems, this application provides an impact-resistant reinforced sound barrier, comprising a sound insulation unit and a frame structure. The frame structure has a groove to accommodate the sound insulation unit, and a buffer layer is provided inside the groove. The buffer layer includes a first buffer layer covering the bottom surface of the groove and a second buffer layer covering the side surface of the groove. The side surface of the second buffer layer facing away from the groove has a protrusion.

[0006] Optionally, the distance between the free end of the protrusion and the bottom surface of the groove is less than the distance between the base end of the protrusion and the bottom surface of the groove.

[0007] Optionally, the inner surface of the groove has an array of three-dimensional patterns.

[0008] Optionally, the three-dimensional shape includes at least one of the following: serrated, barbed, concave-convex, conical, and spherical.

[0009] Optionally, the side surface of the second buffer layer facing the groove matches the inner surface of the groove.

[0010] Optionally, the frame structure is narrower at the top and wider at the bottom, including a first part and a second part. The first part is provided with the groove, and the second part is used to support the first part. The bottom area of ​​the first part is smaller than the bottom area of ​​the second part.

[0011] Optionally, the sound insulation unit is cuboid in shape, and the frame structure covers at least one side of the sound insulation unit.

[0012] Optionally, the first buffer layer is provided with at least one through hole, the buffer layer and the inner side of the groove are bonded together by adhesive, and the sound insulation unit and the buffer layer are bonded together by adhesive seeping through the through hole.

[0013] Optionally, the connection between adjacent frame structures is achieved by pressing corner brackets together.

[0014] Optionally, the sound insulation unit includes a transparent body and at least one reinforcing rib embedded in the transparent body. The reinforcing rib is opaque, and the projection of the reinforcing rib onto a first plane is linear. The first plane is the plane containing the length and width directions of the sound insulation unit.

[0015] This application discloses an impact-resistant reinforced sound barrier, comprising a sound insulation unit and a frame structure. The frame structure has grooves to accommodate the sound insulation unit, and a buffer layer is provided inside the grooves. The buffer layer includes a first buffer layer covering the bottom surface of the groove and a second buffer layer covering the sides of the groove. The surface of the second buffer layer facing away from the groove has a protrusion. This application provides a buffer layer between the sound insulation unit and the groove of the frame structure, and provides a protrusion at the contact surface between the sound insulation unit and the buffer layer. By increasing the contact area between the sound insulation unit and the frame structure, the sliding resistance of the sound insulation unit relative to the frame structure is increased, achieving a better fixing effect and reducing the possibility of the sound insulation unit detaching from the frame structure. Attached Figure Description

[0016] Figure 1 This is a cross-sectional schematic diagram of an impact-resistant reinforced sound barrier according to an embodiment of this application.

[0017] Figure 2 This is an exploded cross-sectional view of an impact-resistant reinforced sound barrier according to an embodiment of this application.

[0018] Figure 3 This is a cross-sectional schematic diagram of a frame structure according to an embodiment of this application.

[0019] Figure 4 This is a cross-sectional schematic diagram of another frame structure shown according to an embodiment of this application.

[0020] Figure 5 yes Figure 4A three-dimensional schematic diagram of the frame structure.

[0021] Figure 6 This is a cross-sectional schematic diagram of another frame structure shown according to an embodiment of this application.

[0022] Figure 7 yes Figure 6 A three-dimensional schematic diagram of the frame structure.

[0023] Figure 8 This is a cross-sectional schematic diagram of another frame structure shown according to an embodiment of this application.

[0024] Figure 9 This is a cross-sectional schematic diagram of another frame structure shown according to an embodiment of this application.

[0025] Figure 10 This is a front view schematic diagram of the impact-resistant reinforced sound barrier according to an embodiment of this application.

[0026] Figure 11 This is a schematic diagram of the mechanical analysis of an impact-resistant reinforced sound barrier according to an embodiment of this application.

[0027] Figure 12 This is a schematic flowchart illustrating the assembly method of an impact-resistant reinforced sound barrier according to an embodiment of this application. Detailed Implementation

[0028] The following specific embodiments illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification.

[0029] In the following description, reference is made to the accompanying drawings, which illustrate several embodiments of the present application. It should be understood that other embodiments may also be used, and changes in mechanical composition, structure, electrical and operational aspects may be made without departing from the spirit and scope of the present application. The following detailed description should not be considered limiting, and the terminology used herein is for describing particular embodiments only and is not intended to limit the present application.

[0030] Although the terms first, second, etc., are used in some instances to describe various elements herein, these elements should not be limited by these terms. These terms are only used to distinguish one element from another.

[0031] Furthermore, as used herein, the singular forms “a,” “an,” and “the” are intended to include the plural forms as well, unless the context indicates otherwise. It should be further understood that the terms “comprising,” “including,” indicate the presence of the stated feature, step, operation, element, component, item, kind, and / or group, but do not preclude the presence, occurrence, or addition of one or more other features, steps, operations, elements, components, items, kinds, and / or groups. The terms “or” and “and / or” as used herein are to be interpreted inclusively, or mean any one or any combination thereof. Thus, “A, B, or C” or “A, B, and / or C” means “any one of: A; B; C; A and B; A and C; B and C; A, B, and C.” Exceptions to this definition occur only when combinations of elements, functions, steps, or operations are inherently mutually exclusive in some way.

[0032] First Embodiment

[0033] like Figure 1 and Figure 2 As shown, the impact-resistant reinforced sound barrier of this application embodiment includes a sound insulation unit 100 and a frame structure 400. The frame structure 400 is provided with a groove 403 to accommodate the sound insulation unit 100. A buffer layer 200 is provided inside the groove 403. The buffer layer 200 includes a first buffer layer 204 covering the bottom surface of the groove 403 (not shown in the figure) and a second buffer layer 203 covering the side surface of the groove 403 (not shown in the figure). The side surface of the second buffer layer 203 facing away from the groove 403 has a protrusion 202.

[0034] Optionally, the buffer layer 200 and the groove 403 are adapted to each other in shape and size, with the cross-sectional shape of the buffer layer 200 approximately U-shaped. The buffer layer 200 includes a first buffer layer 204 and a second buffer layer 203. The first buffer layer 204 is fitted to the bottom surface of the groove 403, and the second buffer layer 203 is fitted to the inner wall of the groove 403. Through an interference fit, the buffer layer 200 is tightly assembled within the groove 403, ensuring good connection stability between the two. This not only improves the overall strength of the sound barrier but also enhances its resistance to external impacts.

[0035] Optionally, the buffer layer 200 is elastic and can be compressed to achieve an interference fit with the groove 403. The material of the buffer layer 200 can be rubber, silicone, polyurethane, ethylene-vinyl acetate copolymer, etc.

[0036] Optionally, the second buffer layer 203 has a protrusion 202 on the side surface opposite to the groove 403, which increases the contact area between the sound insulation unit 100 and the buffer layer 200, thereby increasing the restraining force exerted by the groove 403 on the sound insulation unit 100 in the width direction. The restraining force in the width direction refers to the ability to restrict relative movement between structures or components along the plane (i.e., width) of the sound insulation unit 100.

[0037] Optionally, the protrusion 202 is deformable, and its material can be the same as or different from that of the buffer layer 200. The protrusion 202 extends outward from the surface of the second buffer layer 203 and is evenly distributed at a certain interval. In this way, the surface of the second buffer layer 203 can provide uniform friction and gripping force to the sound insulation unit 100, further reducing the risk of the sound insulation unit 100 sliding or displacing when subjected to external impact.

[0038] Optionally, the distance between the free end of the protrusion 202 and the bottom surface of the groove 403 is less than the distance between the base end of the protrusion 202 and the bottom surface of the groove 403. The free end is the end of the protrusion 202 furthest from the second buffer layer 203, i.e., the top of the protrusion; the base end is the end of the protrusion 202 connected to the second buffer layer 203. Specifically, the protrusion 202 can be an inwardly inclined or bent thin strip. Since the protrusion 202 is inclined downwards, when the sound insulation unit 100 is pressed into the groove 403, these strips will undergo a certain degree of compression deformation, forming multiple sealed spaces between the buffer layer 200 and the sound insulation unit 100, thereby enhancing the sound insulation effect, dustproof and waterproof properties, and vibration damping performance of the sound barrier. When the sound barrier is subjected to external impact, the inclined protrusion 202 can better absorb energy and disperse stress through its own elastic deformation, protecting the sound insulation unit 100 from damage. In addition, the inclined protrusion 202 can play a guiding role during the installation of the sound insulation unit 100 and prevent the sound insulation unit 100 from falling out after installation.

[0039] Optionally, the inner surface of the groove 403 has an array of three-dimensional patterns 401. The regularly arranged three-dimensional patterns 401 on the inner surface of the groove 403 can increase the friction between the groove 403 and the buffer layer 200, thereby improving the structural stability of the sound barrier, improving its acoustic performance, and enhancing its sealing effect.

[0040] Optionally, the three-dimensional shape 401 includes at least one of the following: serrated, barbed, concave-convex, conical, and spherical. For example... Figures 3 to 9 As shown, the array-like three-dimensional pattern 401 on the inner surface of the groove 403 can be a downwardly slanted serrated shape (see...). Figure 3 ), downward-sloping barbs (see) Figure 4 and Figure 5 ), intersecting grooves (i.e., uneven, see) Figure 6 and Figure 7 ), a horizontally convex array of pointed cones (i.e., cone-shaped, see...) Figure 8 ) and an array of horizontally protruding spheres (i.e., spherical, see Figure 9 ).

[0041] Optionally, the surface of the second buffer layer 203 facing the groove 403 matches the inner surface of the groove 403. The surface of the second buffer layer 203 in contact with the groove 403 also has an array of three-dimensional patterns 201, and these patterns match the three-dimensional patterns 401 on the surface of the second buffer layer 203. In other words, the contact surfaces of the second buffer layer 203 and the groove 403 match, forming an interlocking structure. This increases the contact area between the second buffer layer 203 and the frame structure 400, improving the sliding resistance of the second buffer layer 203 relative to the frame structure 400 and preventing the second buffer layer 203 from sliding or shifting during use. Through precise matching with the second buffer layer 203, the frame structure 400 achieves a more robust mechanical connection and simplifies the installation process. The adaptive spatial interlocking structure quickly ensures the correct assembly position.

[0042] The three-dimensional patterns 201 on the second buffer layer 203 are made of elastic materials, such as rubber, silicone, polyurethane, ethylene-vinyl acetate copolymer, etc., and their material can be the same as or different from that of the second buffer layer 203. When the sound barrier is impacted, these elastic three-dimensional patterns 201 deform, absorb and disperse energy, play a shock-absorbing role, and protect the sound insulation unit 100. In addition, the array-distributed three-dimensional patterns 201 can better disperse the pressure applied to the second buffer layer 203, avoid local stress concentration, thereby extending the service life of the material and improving its durability.

[0043] Optionally, the frame structure 400 is narrow at the top and wide at the bottom, including a first part and a second part. The first part is provided with a groove 403, and the second part is used to support the first part. The bottom area of ​​the first part is smaller than the bottom area of ​​the second part.

[0044] Please refer to Figure 3 The first part of the frame structure 400 is the portion outside the dashed frame, and the second part is the portion inside the dashed frame. A groove 403 is provided in the first part to house the buffer layer 200 and the sound insulation unit 100. The bottom area of ​​the second part is larger than that of the first part, forming a stable base. The shape, narrower at the top and wider at the bottom, lowers the overall center of gravity of the frame structure 400, increasing the overall structural stability and reducing the risk of tipping over.

[0045] Optionally, the first buffer layer 204 is provided with at least one through hole 205, the buffer layer 200 and the inner side of the groove 403 are bonded together by adhesive 300, and the sound insulation unit 100 and the buffer layer 200 are bonded together by adhesive 300 seeping through the through hole 205.

[0046] Optionally, the bottom surface of the buffer layer 200 is provided with a suitable number of through holes 205 arranged at a suitable spacing, with the preferred spacing being 5 to 20 cm and the preferred diameter of the through holes 205 being 5 to 20 mm. During the bonding process between the buffer layer 200 and the groove 403, the flowing adhesive seeps out through the through holes 205 to the side of the buffer layer 200 away from the groove 403, thereby bonding the buffer layer 200 and the sound insulation unit 100.

[0047] Optionally, the adhesive 300 may be one of the following: polyurethane, acrylic resin, epoxy resin, phenolic resin, urea-formaldehyde resin, melamine-formaldehyde resin, polyimide, polybenzimidazole, organosilicon, silicone, hot melt adhesive, fluoropolymer, chloroprene rubber, styrene-butadiene rubber, butyl rubber, ethylene propylene rubber, natural rubber, sodium butadiene rubber, isoprene rubber, polysulfide rubber, chlorosulfonated polyethylene, silicone rubber, and olefin polymers.

[0048] After curing, the adhesive not only forms a strong connection between the sound insulation unit 100 and the buffer layer 200, and between the buffer layer 200 and the frame structure 400, but also, due to its good fluidity before curing, it can fully fill and bond all contact surfaces. This results in all related components, including the finally cured adhesive 300, sound insulation unit 100, buffer layer 200, and frame structure 400, being tightly bonded together to form an interconnected and highly stable overall structure.

[0049] Optionally, the sound insulation unit 100 is cuboid, and the frame structure 400 covers at least one side of the sound insulation unit 100, with the connection between adjacent frame structures 400 being pressed together by corner brackets.

[0050] Please refer to Figure 10 Multiple frame structures 400 respectively cover the four sides of the sound insulation unit 100 to improve the overall structural rigidity of the sound barrier. The multiple frame structures 400 can be pressed and fixed together by corner brackets 600, which further improves the sealing of the joints and enables a tight connection between adjacent frame structures 400, further improving the structural strength and deformation resistance of the entire component.

[0051] It should be noted that the corner bracket 600 is a metal component used to connect and reinforce right-angle or specific-angle joints. It is typically made of steel, aluminum alloy, or other robust materials to provide additional support and stability, especially at corners of frame structures 400 or where stronger connections are required.

[0052] Alternatively, adjacent frame structures 400 can also be fastened using various methods such as screw fastening, welding, bonding, or clamp fixing.

[0053] Optionally, the sound insulation unit 100 includes a transparent body 101 and at least one reinforcing rib 102 embedded in the transparent body 101. The reinforcing rib 102 is opaque, and its projection onto a first plane is linear. The first plane is the plane containing the length and width directions of the sound insulation unit 100. The transparent body 101 is a sheet material with a transparency greater than 90%, such as polymethyl methacrylate (PMMA), polycarbonate (PC), or polystyrene (PS), preferably polymethyl methacrylate (PMMA).

[0054] The sound insulation unit 100 consists of reinforcing ribs 102 and a transparent body 101. The reinforcing ribs 102 can be one or more of nylon 66, nylon 6, modified nylon 66, modified nylon 6, carbon fiber braid, basalt fiber braid, aramid braid, ultra-high molecular weight polyethylene fiber braid, and polyester fiber braid, with nylon 66, nylon 6, modified nylon 66, and modified nylon 6 being preferred. The reinforcing ribs 102 are opaque and have a color easily perceived by birds, such as black, brownish-yellow, dark gray, or other colors, with black being preferred. The outer diameter of the reinforcing ribs 102 is not specifically limited, but a preferred size is 1–10 mm.

[0055] like Figure 11 As shown, when a sound barrier is subjected to external impact (such as a traffic accident), the sound insulation unit 100 will be subjected to instantaneous vertical or oblique impact forces, which may cause the sound insulation unit 100 to crack or even separate into local blocks. However, due to the presence of the embedded reinforcing ribs 102, these cracked or separated blocks can still remain connected to each other, thereby preventing them from falling. During this process, the limiting effect of the frame structure 400 causes the impact force to diffuse in a cohesive manner from the impact point towards the width of the sound insulation unit 100, resulting in a tendency for the sound insulation unit 100 to separate away from the frame structure 400 (e.g., Figure 11 (As shown by force F1 in the diagram). To address this issue, this application employs an adaptive interlocking structure, which is installed on the inner walls of the buffer layer 200 and the frame structure 400, respectively. This dissipates the effect of F1 by generating action and reaction forces between F4 / F5 and F2 / F3. Simultaneously, a protrusion 202 is provided on the inner wall of the buffer layer 200, utilizing the frictional resistance of f1 and f2 to further dissipate the effect of F1, significantly improving the misalignment or sliding resistance between the buffer layer 200 and the frame structure 400 or the sound insulation unit 100. Furthermore, through the through-holes in the buffer layer 200 and the fluidity of the adhesive before curing, a robust whole is ultimately formed between the sound insulation unit 100, the buffer layer 200, and the frame structure 400, greatly reducing the aforementioned risk of separation.

[0056] This application discloses an impact-resistant reinforced sound barrier, comprising a sound insulation unit and a frame structure. The frame structure has grooves to accommodate the sound insulation unit, and a buffer layer is provided inside the grooves. The buffer layer includes a first buffer layer covering the bottom surface of the groove and a second buffer layer covering the sides of the groove. The surface of the second buffer layer facing away from the groove has a protrusion. By providing a buffer layer between the sound insulation unit and the groove of the frame structure, and by providing a protrusion at the contact surface between the sound insulation unit and the buffer layer, this application increases the contact area between the sound insulation unit and the frame structure, thereby increasing the sliding resistance of the sound insulation unit relative to the frame structure, achieving a better fixing effect, and reducing the possibility of the sound insulation unit detaching from the frame structure.

[0057] Second Embodiment

[0058] like Figure 12 As shown in the figure, this application embodiment also provides a method for assembling an impact-resistant reinforced sound barrier, including the following steps:

[0059] S1. Provide a frame structure 400, the frame structure 400 is provided with a groove 403, and the inner surface of the groove 403 has an array of three-dimensional patterns 401.

[0060] Optionally, the frame structure 400 has a shape that is narrower at the top and wider at the bottom, including a first part and a second part. The first part has a groove 403, and the second part is used to support the first part. The bottom area of ​​the first part is smaller than the bottom area of ​​the second part. The bottom area of ​​the second part is larger than the bottom area of ​​the first part, forming a stable base. The shape of being narrower at the top and wider at the bottom makes the center of gravity of the frame structure 400 lower, increasing the stability of the overall structure and reducing the risk of tipping over.

[0061] S2. Pour adhesive 300 onto the bottom surface of groove 403.

[0062] Optionally, a liquid adhesive layer with a thickness greater than or equal to 1 mm may be cast into the bottom surface of the groove 403 of the frame structure 400.

[0063] Optionally, the adhesive 300 may be one of the following: polyurethane, acrylic resin, epoxy resin, phenolic resin, urea-formaldehyde resin, melamine-formaldehyde resin, polyimide, polybenzimidazole, silicone rubber, silicone, hot melt adhesive, fluoropolymer, chloroprene rubber, styrene-butadiene rubber, butyl rubber, sodium butadiene rubber, ethylene propylene rubber, natural rubber, isoprene rubber, polysulfide rubber, chlorosulfonated polyethylene, silicone rubber, and olefin polymers, wherein polyurethane, silicone rubber, silicone, acrylic resin, and olefin polymers are preferred.

[0064] S3. A buffer layer 200 is embedded in the groove 403. The side surface of the buffer layer 200 facing the groove 403 has a three-dimensional pattern 201, and the bottom surface of the buffer layer 200 is provided with at least one through hole 205.

[0065] Embed the buffer layer 200 into the groove 403 of the frame structure 400, press the buffer layer 200 appropriately so that the bottom surface of the buffer layer 200 is in full contact with the liquid adhesive 300, and let the liquid adhesive 300 seep out through the through hole 205 on the bottom surface of the buffer layer 200, so as to facilitate the subsequent bonding of the buffer layer 200 and the sound insulation unit 100.

[0066] S4. A sound insulation unit 100 is embedded in the buffer layer 200. The sound insulation unit 100 includes a transparent body 101 and at least one reinforcing rib 102 embedded in the transparent body 101, and a curing adhesive 300.

[0067] Optionally, a sound insulation unit 100 is placed in the internal space of the buffer layer 200, and the sound insulation unit 100 contacts the protrusion 202 on the inner surface of the buffer layer 200, causing it to undergo forced deformation. The sound insulation unit 100 is moderately pressed so that its bottom surface fully contacts the liquid adhesive 300 and the buffer layer 200, thus ensuring that the liquid adhesive fully impregnates and fills the space between the buffer layer 200 and the groove 403 of the frame structure 400, and between the buffer layer 200 and the sound insulation unit 100.

[0068] Optionally, the adhesive can be cured at room temperature or with heat, with the maximum temperature during heat curing not exceeding 80°C, and room temperature curing is preferred. The adhesive can be applied as a single-component or two-component solution, preferably a two-component solution. The adhesive's performance requirements are: after full curing, it should form good adhesion to the buffer layer 200, the frame structure 400, and the sound insulation unit 100, with the horizontal or vertical tensile strength of the bonded surfaces being greater than or equal to 10 MPa, ensuring that the buffer layer 200, the frame structure 400, and the sound insulation unit 100 form a strong whole under the action of the adhesive 300.

[0069] Optionally, the cured adhesive 300 includes:

[0070] Curing at room temperature: Allow to stand for 6–72 hours at room temperature;

[0071] Heat curing: 50-80℃, heat for 2-12 hours.

[0072] After step S5, the adhesive 300 has been fully cured, resulting in an impact-resistant and reinforced sound barrier.

[0073] Optionally, after curing, the adhesive 300 not only forms a strong connection between the sound insulation unit 100 and the buffer layer 200, and between the buffer layer 200 and the frame structure 400, but also, due to its good fluidity before curing, can fully fill and bond all contact surfaces. This ensures that all related components, including the finally cured adhesive 300, sound insulation unit 100, buffer layer 200, and frame structure 400, are tightly bonded together, forming an interconnected and highly stable overall structure.

[0074] S5. Multiple frame structures 400 are wrapped around the sound insulation unit 100. The connection between adjacent frame structures 400 is fastened by pressing with corner brackets 600.

[0075] Multiple frame structures 400 respectively cover the four sides of the sound insulation unit 100 to improve the overall structural rigidity of the sound barrier. The multiple frame structures 400 can be pressed and fixed together by corner brackets 600, which further improves the sealing of the joints and enables a tight connection between adjacent frame structures 400, further improving the structural strength and deformation resistance of the entire component.

[0076] The following lists different implementation processes of the assembly method based on this embodiment:

[0077] Process 1

[0078] The sound insulation unit is 20mm thick, made of PMMA, with reinforcing ribs made of Nylon 66, black in color, and has an outer diameter of 3mm.

[0079] The inner wall surface of the groove in the frame structure has a continuous bent step geometry, while the two outer sides of the buffer layer have reverse continuous bent steps. Both inner sides of the buffer layer have thin, downward-sloping strips arranged at regular intervals. The bottom surface of the buffer layer has through holes (10mm in diameter) arranged at 10cm intervals.

[0080] For the adhesive, choose a two-component polyurethane, room temperature curing type, and the curing process is to let it stand at room temperature for 12 hours.

[0081] Process 2

[0082] The sound insulation unit is 20mm thick, made of PMMA, with reinforcing ribs made of nylon 6, black in color, and has an outer diameter of 3mm.

[0083] The inner wall surface of the groove in the frame structure has a downward-sloping array of barbs, while the two outer surfaces of the buffer layer are ordinary planes. The two inner surfaces of the buffer layer each have thin, downward-sloping strips arranged at regular intervals. The bottom surface of the buffer layer contains through holes (10mm in diameter) spaced 10cm apart.

[0084] For the adhesive, choose a two-component silicone rubber, room temperature curing type, and the curing process is to let it stand at room temperature for 24 hours.

[0085] Process 3

[0086] The sound insulation unit 100 is 20mm thick, made of PMMA, with reinforcing ribs made of modified nylon 66, black in color, and 3mm in outer diameter.

[0087] The inner wall surface of the groove in the frame structure has a geometric structure of intersecting horizontal and vertical grooves, while the two outer surfaces of the buffer layer are ordinary planes. Both inner surfaces of the buffer layer have thin, downward-sloping strips arranged at regular intervals. The bottom surface of the buffer layer contains through holes (10mm in diameter) spaced 10cm apart.

[0088] For the adhesive, a two-component acrylic resin with room temperature curing is selected, and the curing process involves standing at room temperature for 48 hours.

[0089] Process 4

[0090] The sound insulation unit 100 is 20mm thick, made of PMMA, with reinforcing ribs made of modified nylon 6 material, black in color, and 3mm in outer diameter.

[0091] The inner wall surface of the groove in the frame structure has an array of horizontally protruding pointed cones, while the two outer surfaces of the buffer layer are ordinary planes. The two inner surfaces of the buffer layer each have thin, downward-sloping strips arranged at regular intervals. The bottom surface of the buffer layer contains through holes (10mm in diameter) spaced 10cm apart.

[0092] For the adhesive, select a single-component olefin polymer, heat-curing type, with a curing process of 60℃ / 6h.

[0093] Process 5

[0094] The sound insulation unit 100 is 20mm thick, made of PMMA, with reinforcing ribs made of nylon 66, black in color, and has an outer diameter of 3mm.

[0095] The inner wall surface of the groove in the frame structure has a geometric structure of horizontally convex spherical arrays, while the two outer surfaces of the buffer layer are ordinary planes. The two inner surfaces of the buffer layer each have thin, downward-sloping strips arranged at a certain interval. The bottom surface of the buffer layer contains through holes (10mm in diameter) arranged at 10cm intervals.

[0096] For the adhesive, choose a single-component silicone, room temperature curing type, and the curing process is to let it stand at room temperature for 72 hours.

[0097] control group

[0098] The sound insulation unit is 20mm thick, made of PMMA, with reinforcing ribs made of Nylon 66, black in color, and has an outer diameter of 3mm.

[0099] The inner walls of the grooves in the frame structure are smooth surfaces, and the two outer surfaces of the buffer layer are ordinary planes. The two inner surfaces of the buffer layer are also ordinary planes. The bottom surface of the buffer layer has no through holes. No adhesive is used.

[0100] In processes 1 to 5 and the control group, the composite sound insulation unit has a size of 2m×2m, the frame structure and size are the same, and the connection method used is corner code pressing. Except for the characteristic geometric structure of the inner and outer surfaces, the material of the buffer layer and other external dimensions are the same.

[0101] Sample preparation and results analysis

[0102] Sound barriers manufactured according to processes 1-5 and the control group were sequentially installed on the same test frame according to the testing requirements of the international standard EN 1794-2. A 400kg pendulum was used, with a drop height of 1.5m, simulating an impact energy of 6kJ, for each barrier to conduct impact tests. Key indicators are shown in Table 1. It can be seen that the sound barriers provided by processes 1-5 all passed the various indicators required for the 6kJ pendulum impact test, while the sound barriers provided by the control group failed. Analysis of the damage to the sound insulation units after testing revealed that the main difference was that no damage exceeding 25cm was observed in processes 1-5. 2 The sound barrier presented in this application contained no fragments, and the total mass of all fragments was less than 100g. However, the control group contained large broken and falling objects, weighing 5.28kg and 1.37kg respectively, with a total mass of 7690g along with other smaller fragments. The impact test results show that the sound barrier proposed in this application has strong impact resistance and can effectively avoid the problem in the prior art where the sound insulation unit is partially or completely separated from the frame and falls off after a vehicle impact due to the unrestrained spatial embedding connection method between the sound insulation unit and the frame structure.

[0103] Table 1. Statistics of pendulum impact results

[0104] serial number <![CDATA[Maximum fragment area / cm 2 > Total mass of fragments / g Fragments longer than 15cm Process 1 10 35 none Process 2 15 41 none Process 3 8 29 none Process 4 20 63 none Process 5 16 58 none control group 2218 7690 have

[0105] The above embodiments are merely illustrative of the principles and effects of this application and are not intended to limit this application. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this application. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this application should still be covered by the claims of this application.

Claims

1. An impact-resistant reinforced sound barrier, characterized in that, The device includes a sound insulation unit and a frame structure. The frame structure has a groove to accommodate the sound insulation unit. A buffer layer is provided inside the groove. The buffer layer includes a first buffer layer covering the bottom surface of the groove and a second buffer layer covering the side surface of the groove. The side surface of the second buffer layer facing away from the groove has a protrusion.

2. The sound barrier according to claim 1, characterized in that, The distance between the free end of the protrusion and the bottom surface of the groove is less than the distance between the base end of the protrusion and the bottom surface of the groove.

3. The sound barrier according to claim 1, characterized in that, The inner surface of the groove has an array of three-dimensional patterns.

4. The sound barrier according to claim 3, characterized in that, The three-dimensional shape includes at least one of the following: serrated, barbed, concave-convex, conical, and spherical.

5. The sound barrier according to claim 3 or 4, characterized in that, The side surface of the second buffer layer facing the groove matches the inner surface of the groove.

6. The sound barrier according to claim 1, characterized in that, The frame structure is narrower at the top and wider at the bottom, and includes a first part and a second part. The first part has the groove, and the second part is used to support the first part. The bottom area of ​​the first part is smaller than the bottom area of ​​the second part.

7. The sound barrier according to claim 1, characterized in that, The sound insulation unit is cuboid in shape, and the frame structure covers at least one side of the sound insulation unit.

8. The sound barrier according to claim 7, characterized in that, The first buffer layer has at least one through hole, and the buffer layer and the inner side of the groove are bonded together by adhesive. The sound insulation unit and the buffer layer are bonded together by adhesive seeping through the through hole.

9. The sound barrier according to claim 8, characterized in that, The connection between adjacent frame structures is achieved by pressing corner brackets together.

10. The sound barrier according to claim 8, characterized in that, The sound insulation unit includes a transparent body and at least one reinforcing rib embedded in the transparent body. The reinforcing rib is opaque, and the projection of the reinforcing rib onto a first plane is linear. The first plane is the plane containing the length and width directions of the sound insulation unit.

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