Rubber part and sound absorption metal sound barrier

Abstract

The utility model discloses a rubber part and a sound-absorbing metal sound barrier, the rubber part comprises a rubber gasket, the cross section of the rubber gasket is a U-shaped groove, and the upper parts of the two sides of the U-shaped groove are bent outwards, so that a trumpet-shaped opening structure is formed above the rubber gasket, the outer wall of the trumpet-shaped opening structure is used for installing an outer rubber pipe, and the outer wall of the trumpet-shaped opening structure is used for installing an inner rubber pipe. And the groove of the rubber gasket is used for installing the inner rubber pipe. According to the rubber part and the sound absorption metal sound barrier, multi-point high-elasticity contact supporting is adopted at the contact position of the ceramsite sound absorption plate and the metal shell, damping increase of the whole structure and good sealing of an acoustic structure are achieved by means of large deformation generated when the inner rubber pipe is pressed, the acoustic structure is secondarily sealed through the outer rubber pipe, and the sound absorption effect is good. Meanwhile, the overall stability and safety of the assembled rubber part are ensured through size amplification, and the assembling efficiency of the sound absorption metal sound barrier is improved through the flaring design.

Description

Technical Field

[0001] This utility model relates to the field of barriers, specifically to a rubber component and a sound-absorbing metal sound barrier. Background Technology

[0002] Compared to traditional sound-absorbing metal sound barriers, ceramsite sound-absorbing metal barriers offer advantages such as better weather resistance, stable performance during service life, and long service life, leading to their increasing application in noise control for high-speed railways and urban rail transit. Ceramsite sound-absorbing panels are a non-metallic material that is directly embedded within the metal shell of the sound barrier, creating rigid contact with the metal. Each unit panel contains at least two ceramsite sound-absorbing panels, which also maintain rigid contact with each other. Friction generated at rigid contact points during factory assembly, on-site construction, and service can easily cause wear and tear on the metal shell and ceramsite sound-absorbing panels. When subjected to natural wind or train wind loads, the dynamic force on the metal shell is directly transmitted to the ceramsite sound-absorbing panels through rigid connections, leading to a risk of impact damage to the ceramsite sound-absorbing panels. Due to the low overall damping of the unit panel structure, it is prone to vibrations with large amplitude and long decay time when subjected to dynamic forces, which may cause fatigue damage to the metal shell or generate secondary structural noise. At the same time, due to the production errors of the metal shell and ceramsite sound-absorbing panels, the two cannot achieve a tight contact state during actual assembly, which may affect the overall sound absorption and sound insulation performance of the unit panel.

[0003] To address the aforementioned issues, rubber gaskets are typically used at all contact points between the ceramsite sound-absorbing panels and between them and the metal casing to provide damping, vibration isolation, and sealing. These rubber gaskets are generally placed directly into the gaps between the ceramsite sound-absorbing panels and between them and the metal casing. Their fixation relies entirely on the tight contact between the ceramsite sound-absorbing panels and the metal casing. If manufacturing errors in the metal casing and ceramsite sound-absorbing panels result in excessively small gaps at the contact points, problems such as difficulty in positioning the rubber gaskets and their tendency to be extruded may arise during assembly. Conversely, if manufacturing errors in the metal casing and ceramsite sound-absorbing panels result in excessively large gaps at the contact points, the rubber gaskets may detach under prolonged dynamic forces, thus losing their damping, vibration isolation, and sealing functions. Utility Model Content

[0004] This utility model addresses the problems in the prior art by disclosing a rubber component and a sound-absorbing metal sound barrier. By setting up the rubber component and the structure connecting the rubber component, this utility model can prevent the rubber component from falling off when the gaps between the ceramsite sound-absorbing panels and between the ceramsite sound-absorbing panels and the metal shell are large, thus fully ensuring the functionality of the rubber component. At the same time, the negative deviation can be appropriately relaxed in the production of ceramsite sound-absorbing panels to increase the gaps between the ceramsite sound-absorbing panels and between the ceramsite sound-absorbing panels and the metal shell, avoiding the situation where the gaps are too small.

[0005] This utility model is achieved through the following technical solution:

[0006] This utility model first provides a rubber part, including a rubber gasket. The cross-section of the rubber gasket is a U-shaped groove, and the upper sides of both sides of the U-shaped groove are bent outward, so that the upper part of the rubber gasket forms a trumpet-shaped opening structure. The outer wall of the trumpet-shaped opening structure is used to install an outer rubber tube, and the groove of the rubber gasket is used to install an inner rubber tube.

[0007] As a further improvement, the rubber gasket includes an integral upper and lower structure. The lower part is a U-shaped groove structure, and the upper part is a rectangular plate structure. The two sides of the lower part are respectively connected to the upper part, and the angle between the two is outward. The angle between the vertical groove walls of the upper and lower parts is 30°-75°. The outer side of the upper part is used to install the outer rubber tube.

[0008] As a further improvement, the rubber parts are integrally molded structures.

[0009] As a further improvement, the rubber parts are made of EPDM rubber.

[0010] As a further improvement, the rubber gasket is a solid gasket with a thickness greater than 1mm.

[0011] As a further improvement, the thickness of the rubber gasket is preferably 1.5mm, 2.5mm, or 3mm.

[0012] As a further improvement, both the inner and outer rubber tubes are hollow tubular structures with a wall thickness of 1 mm or more.

[0013] As a further improvement, the outer walls of both the inner and outer rubber tubes are curved.

[0014] As a further improvement, the tubular cross-sections of both the inner and outer rubber tubes can be any one of the following: semi-circular, full circle, elliptical, or semi-elliptical.

[0015] This utility model also provides a sound-absorbing metal sound barrier, which uses the aforementioned rubber component, including a metal shell formed by a top plate, a bottom plate, two front panels and two side plates. The metal shell is provided with a plurality of sound-absorbing plates, and two adjacent sound-absorbing plates are connected by connecting rubber components. A rubber component is provided between the sound-absorbing plate and the top plate, and between the sound-absorbing plate and the bottom plate, so that the inner rubber tube contacts the sound-absorbing plate and the outer rubber tube contacts the metal shell.

[0016] As a further improvement, the connecting rubber component includes a middle gasket and front and back gaskets fixedly connected to both sides. The three gaskets form an I-shaped structure, and a U-shaped slot is formed on both sides of the middle gasket. Each slot is used to insert a sound-absorbing board.

[0017] As a further improvement, the connecting rubber component is a one-piece molded structure, and the thickness of the connecting rubber component is greater than 1mm.

[0018] As a further improvement, the preferred thicknesses for the connecting rubber parts are 1.5mm, 2mm, 3mm, 3.5mm, and 5mm.

[0019] As a further improvement, the connecting rubber parts are made of EPDM rubber.

[0020] As a further improvement, both the top plate and the bottom plate are solid profiles with the aforementioned grooves.

[0021] As a further improvement, the two panels are Panel 1 facing the sound source and Panel 2 facing away from the sound source, with the sound-absorbing panel close to Panel 1.

[0022] As a further improvement, the sound-absorbing panel is a ceramic aggregate sound-absorbing panel.

[0023] Compared with existing technologies, the rubber component and sound-absorbing metal sound barrier described in this utility model have the following advantages:

[0024] Regarding this rubber component:

[0025] (1) The rubber parts provided by this utility model adopt multi-point high elasticity contact support at the contact point between the ceramsite sound-absorbing plate and the metal shell. The large deformation generated by the inner rubber tube under pressure realizes the increase of damping of the overall structure and the good sealing of the acoustic structure. The outer rubber tube provides secondary sealing for the acoustic structure. At the same time, the enlargement of its size ensures the overall stability and safety of the rubber parts after assembly. The flared design improves the assembly efficiency of the sound-absorbing metal sound barrier.

[0026] (2) The rubber part provided by this utility model has an upper part on each of the two sides of the lower part, and the angle of the connection between the two is outward, forming a ceramic sound-absorbing plate socket expansion, which avoids the vertical rubber pad from twisting, rolling inward and being squeezed out when the ceramic sound-absorbing plate is inserted.

[0027] (3) The rubber parts provided by this utility model are solid rubber gaskets, which effectively ensure that the rubber gaskets play a role in damping vibration isolation and sealing.

[0028] Regarding this sound-absorbing metal sound barrier:

[0029] (1) The sound-absorbing metal sound barrier provided by this utility model has been optimized with a split structure design based on the current status and main functions of the rubber parts at different contact positions, which improves the adaptability of the rubber parts at different contact positions. The connecting rubber parts between the ceramsite sound-absorbing panels realize the sealed connection of the core acoustic components, while avoiding mutual friction and impact loss between the ceramsite sound-absorbing panels.

[0030] (2) The sound-absorbing metal sound barrier provided by this utility model has a rubber pad with an outer contour width that is slightly smaller than the profile with an inner contour width. When the sound barrier unit plate is assembled, it can be easily built into the top profile groove, avoiding the problem of large friction and difficulty in insertion caused by the tight fit between the profile and the ceramic sound-absorbing plate. The rubber pad with an outer contour height is consistent with the profile with an inner contour height, ensuring that the damping material fully covers the rigid contact between the ceramic sound-absorbing plate and the inner side of the top profile support.

[0031] (3) The sound-absorbing metal sound barrier provided by this utility model has an intermediate gasket to avoid the loss caused by the friction and collision between the two ceramic sound-absorbing panels. The intermediate gasket is a damping and vibration isolation structure between two adjacent ceramic sound-absorbing panels. Its width is slightly larger than the thickness of the ceramic sound-absorbing panel. During assembly, the ceramic sound-absorbing panel can be easily inserted into the U-shaped slot of the connecting rubber part, avoiding the twisting and squeezing of the rubber part caused by the tight fit between the ceramic sound-absorbing panels. The width of the front gasket and the back gasket is much larger than the gap size between the ceramic sound-absorbing panels, which effectively prevents the connecting rubber part from coming out. At the same time, it seals the noise inlet side and outlet side of the gap, ensuring the sound absorption and sound insulation performance of the sound barrier unit panel after assembly. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 This is a schematic diagram of the rubber part described in an embodiment of the present utility model;

[0034] Figure 2 This is a schematic diagram of the rubber pad described in an embodiment of the present utility model;

[0035] Figure 3 This is a schematic diagram of the sound-absorbing metal sound barrier described in an embodiment of the present invention;

[0036] Figure 4 for Figure 3 Sectional view along axis AA;

[0037] Figure 5 for Figure 4 Enlarged view of section A;

[0038] Figure 6 for Figure 3 BB-direction sectional view;

[0039] Figure 7 for Figure 6 Enlarged view of section B;

[0040] Figure 8 for Figure 6 Enlarged view of section C;

[0041] Figure 9 This is a schematic diagram of the connecting rubber component described in an embodiment of the present invention.

[0042] Explanation of reference numerals in the attached figures

[0043] 1-Rubber parts; 11-Rubber pads; 111-Upper part; 112-Lower part; 12-Inner rubber tube; 13-Outer rubber tube; 2-Side plate; 3-Connecting rubber parts; 31-Intermediate gasket; 32-Front gasket; 33-Back gasket; 4-First panel; 5-Second panel; 6-Top plate; 7-Bottom plate; 8-Sound-absorbing board. Detailed Implementation

[0044] To facilitate understanding of this utility model, a more comprehensive description of this utility model will be provided below, along with embodiments of this utility model, but this does not limit the scope of this utility model.

[0045] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in this application is for the purpose of describing particular embodiments only and is not intended to limit this application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion. In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0046] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0047] A rubber part 1, such as Figure 1 and Figure 2 As shown, it includes a rubber gasket 11, an inner rubber tube 12, and an outer rubber tube 13. The cross-section of the rubber gasket 11 is a U-shaped groove, and the upper sides of both sides of the U-shaped groove are bent outward, so that the upper part of the rubber gasket 11 forms a horn-shaped opening structure. Several inner rubber tubes 12 are fixedly installed in the groove of the rubber gasket 11. The inner rubber tubes 12 are used to contact the sound-absorbing panel 8. An outer rubber tube 13 is installed on the outside of the horn opening. The outer rubber tube 13 is used to contact the shell of the sound-absorbing metal sound barrier.

[0048] The rubber component provided by this utility model enables multi-point high-elasticity contact support at the contact point between the ceramsite sound-absorbing panel and the metal shell. The large deformation generated by the inner rubber tube 12 under pressure increases the damping of the overall structure and provides a good seal for the acoustic structure. The outer rubber tube 13 provides a secondary seal for the acoustic structure. At the same time, the enlarged size of the outer rubber tube ensures the overall stability and safety of the assembled rubber component. The flared design improves the assembly efficiency of the sound-absorbing metal sound barrier.

[0049] The rubber gasket 11 includes an integral upper part 111 and a lower part 112. The lower part 112 is a U-shaped groove structure, and the upper part 111 is a rectangular plate structure. An upper part 111 is provided on each side of the lower part 112, and the angle at the connection between the two is outward, forming a bulging opening for the ceramic sound-absorbing board to be inserted, which avoids the vertical rubber gasket from twisting, rolling inward, and being squeezed out when the ceramic sound-absorbing board is inserted. Preferably, the included angle between the vertical groove walls of the upper part 111 and the lower part 112 is in the range of 30°-75°, and the outer side of the upper part 112 is used to install the outer rubber tube 13.

[0050] The rubber gasket 11 is a solid gasket with a thickness greater than 1 mm. In order to ensure that it plays a role in damping, vibration isolation and sealing, the thickness of the rubber gasket 11 is preferably 1.5 mm, 2.5 mm or 3 mm.

[0051] Both the inner rubber tube 12 and the outer rubber tube 13 are hollow tubular structures.

[0052] In one embodiment, the rubber component 1 is a one-piece molded structure. The material of the rubber component is EPDM rubber.

[0053] Preferably, the outer rubber tube 13 serves as an anti-detachment and secondary sealing structure, and is integrally formed with the rubber gasket 11, extending from the top of the profile slot into the cavity facing the sound source and the cavity away from the sound source, respectively.

[0054] The outer walls of the tubular sections of the inner rubber tube 12 and the outer rubber tube 13 are both arc-shaped, and the specific shape can be determined according to the impact resistance requirements of the ceramsite sound-absorbing board; its size can be determined according to the design dimensions of the metal shell and the ceramsite sound-absorbing board.

[0055] Preferably, when the cross-sections of the inner rubber tube 12 and the outer rubber tube 13 are semicircular or full-circular, the radius is greater than 3mm and the thickness of the tube wall is greater than or equal to 1mm.

[0056] In one embodiment, two inner rubber tubes 12 are evenly distributed inside the rubber gasket 11, and the cross-section of the inner rubber tube 12 is semi-circular with a radius of 3.5 mm and a wall thickness of 2.5 mm.

[0057] In another embodiment, two inner rubber tubes 12 are evenly distributed inside the rubber gasket 11. The cross-section of the inner rubber tube 12 is circular, the inner diameter of the circle is 8mm, and the thickness of the tube wall is 1.5mm.

[0058] In another embodiment, three inner rubber tubes 12 are evenly distributed inside the rubber gasket 11. The cross-section of the inner rubber tube 12 is elliptical, with a major axis of 6.4 mm, a minor axis of 4 mm, and a wall thickness of 2 mm.

[0059] Preferably, when the cross-section of the outer rubber tube 13 is a semicircle or a full circle, the radius is greater than 3mm and the thickness of the tube wall is greater than or equal to 1mm.

[0060] In one embodiment, an outer rubber tube 13 is installed on the outside of each upper part 111, and the cross-section of the outer rubber tube 13 is semi-circular with a radius of 3.5 mm and a wall thickness of 2.5 mm.

[0061] In another embodiment, an outer rubber tube 13 is installed on the outside of each upper part 111, and the cross-section of the outer rubber tube 13 is circular, with an inner diameter of 8 mm and a wall thickness of 1.5 mm.

[0062] In another embodiment, each upper part 111 is fitted with an outer rubber tube 13, and the cross-section of the outer rubber tube 13 is elliptical, with a major axis of 6.4 mm, a minor axis of 4 mm, and a wall thickness of 2 mm.

[0063] A sound-absorbing metal sound barrier, such as Figures 3 to 9As shown, a metal shell consisting of a top plate 6, a bottom plate 7, two front panels, and two side plates 2 is provided. Several sound-absorbing panels 8 are provided inside the shell. Adjacent sound-absorbing panels 8 are connected by connecting rubber parts 3. A rubber part 1 is provided between each sound-absorbing panel 8 and the top plate 6 and the bottom plate 7. After the rubber part 1 is fitted into the groove of the top plate 6 and the groove of the bottom plate 7, the inner rubber tube 12 contacts the sound-absorbing panel 8, and the outer rubber tube 13 contacts the top plate and the bottom plate 7. This avoids the problem of the rubber part 1 coming off when the sound-absorbing metal sound barrier is flipped during transportation or installed upside down on site.

[0064] Both the top plate 6 and the bottom plate 7 are solid profiles with the grooves described above.

[0065] Rubber component 1 serves as the main damping, vibration isolation, and sealing component, and is in contact with the profile and the ceramic abrasive sound-absorbing plate at the top and bottom, respectively, thereby playing a role in sealing and increasing structural damping.

[0066] The sound-absorbing metal sound barrier provided by this utility model features a split structure design optimization based on the current fixing status and main functions of rubber parts at different contact positions, improving the adaptability of rubber parts at different contact positions. The connecting rubber parts between the ceramsite sound-absorbing panels achieve a sealed connection of the core acoustic components, while avoiding mutual friction and impact loss between the ceramsite sound-absorbing panels.

[0067] In one embodiment, the two panels are a first panel 4 facing the sound source and a second panel 5 facing away from the sound source, and the sound-absorbing panel 8 is close to the first panel 4.

[0068] Preferably, the sound-absorbing panel 8 is a ceramic particle sound-absorbing panel.

[0069] The connecting rubber component 3 includes a middle gasket 31 and two front gaskets 32 and a back gasket 33 fixedly connected to both sides. The three gaskets form an I-shaped structure, and a U-shaped slot is formed on both sides of the middle gasket 31. Each slot is used to insert a sound-absorbing panel 8. Using the connecting rubber component 3 can prevent the rubber component 1 from falling off when the gaps between the ceramsite sound-absorbing panels and between the ceramsite sound-absorbing panels and the metal shell are large, thus fully ensuring the functionality of the rubber component. At the same time, the negative deviation can be appropriately relaxed in the production of ceramsite sound-absorbing panels, increasing the gaps between the ceramsite sound-absorbing panels and between the ceramsite sound-absorbing panels and the metal shell, avoiding the situation where the gaps are too small, and further improving the production and assembly efficiency of the unit panels.

[0070] Preferably, the connecting rubber part 3 is a one-piece molded structure, which facilitates one-piece injection molding and improves production efficiency.

[0071] The thickness of the connecting rubber component 3 is greater than 1 mm, with preferred thicknesses being 1.5 mm, 2 mm, 3 mm, 3.5 mm, and 5 mm. The material of the connecting rubber component 3 is EPDM rubber.

[0072] The intermediate shim 31 prevents the loss caused by friction and collision between the two ceramsite sound-absorbing panels. As a damping and vibration isolation structure between two adjacent ceramsite sound-absorbing panels 8, the intermediate shim 31 is slightly wider than the thickness of the ceramsite sound-absorbing panel. During assembly, the ceramsite sound-absorbing panel 8 can be easily inserted into the U-shaped groove of the connecting rubber part 3, avoiding the twisting and squeezing of the rubber part caused by the tight fit between the ceramsite sound-absorbing panels 8. The width of the front shim 32 and the back shim 33 is much larger than the gap size between the ceramsite sound-absorbing panels 8, effectively preventing the connecting rubber part 3 from coming out. At the same time, it seals the noise inlet and outlet sides of the gap, ensuring the sound absorption and sound insulation performance of the sound barrier unit panel after assembly.

[0073] The outer contour width of the rubber gasket 11 is slightly smaller than the inner contour width of the groove in the top plate 6 and the bottom plate 7. When assembling the sound barrier unit panel, it can be easily built into the groove in the top plate 6 and the bottom plate 7, avoiding the problem of large friction and difficulty in insertion caused by the tight fit of the profile and the ceramic sound-absorbing panel. The outer contour height of the rubber gasket 11 is consistent with the inner contour height of the groove in the top plate 6 and the bottom plate 7, ensuring that the damping material fully covers the rigid contact between the ceramic sound-absorbing panel and the inner support of the top plate 6 and the bottom plate 7.

[0074] The inner rubber tube 12 is a hollow tubular structure, which has a greater deformation capacity than the rubber gasket. This effectively increases the range of error handling for the gap between the ceramsite sound-absorbing panel and the top plate 6 and bottom plate 7, achieving a seal between the top of the ceramsite sound-absorbing panel and the top plate 6 and bottom plate 7, ensuring the acoustic performance of the sound barrier unit panel. At the same time, the top of the ceramsite sound-absorbing panel has a large displacement buffer space, preventing the ceramsite sound-absorbing panel from breaking after impact. The outer rubber tube 13 is a hollow tubular structure, with a size much larger than the gap size between the ceramsite sound-absorbing panel and the metal shell, effectively preventing the rubber parts from coming out. At the same time, it seals the noise inlet and outlet sides of the gap, ensuring the sound absorption and sound insulation performance of the assembled sound barrier unit panel.

[0075] The assembly process of a sound-absorbing metal sound barrier is as follows:

[0076] When assembling a sound barrier, taking the requirement of two sound-absorbing panels 8 as an example, after placing the base plate 7, first place a rubber component 1 in the groove of the base plate 7, and then place a connecting rubber component 3 in the middle. Insert the ends of the two sound-absorbing panels 8 into a U-shaped slot of the connecting rubber component 3 respectively. After connecting the two sound-absorbing panels 8, place another rubber component 1 on top of the sound-absorbing panels 8, so that the U-shaped groove of the rubber component 1 fits with the sound-absorbing panel 8. Then place the top plate 6 on top of the rubber component 1, so that the rubber component 1 is located in the groove of the top plate 6. This connection method avoids the problem of large friction and difficulty in insertion caused by the tight fit between the top plate 6 and the sound-absorbing panel 8, and between the base plate 7 and the ceramsite sound-absorbing panel 8. Then, install a panel on each side of the top plate 6 and the base plate 7. The outer contour height of the rubber gasket 11 is consistent with the inner contour height of the top plate 6 and the bottom plate 7, ensuring that the damping material fully covers the rigid contact between the ceramsite sound-absorbing panel 8 and the inner support of the top plate 6 and the bottom plate 7. The inner rubber tube 12 effectively increases the range of gap error treatment between the ceramsite sound-absorbing panel 8 and the top plate 6 and the bottom plate 7, realizing the seal between the top of the ceramsite sound-absorbing panel 8 and the top plate 6 and the bottom plate 7, ensuring the acoustic performance of the sound barrier unit panel and avoiding damage to the ceramsite sound-absorbing panel after impact. The ceramsite sound-absorbing panel socket flare formed at the connection between the upper part 111 and the lower part 112 avoids the vertical rubber gasket twisting, inward rolling and squeezing out caused by the insertion of the ceramsite sound-absorbing panel 8. The size of the outer rubber tube 13 is much larger than the gap size between the ceramsite sound-absorbing panel 8 and the metal shell, effectively preventing the rubber part 1 from coming out, and sealing the noise inlet and outlet sides of the gap, ensuring the sound absorption and sound insulation performance of the sound barrier unit panel after assembly.

[0077] It should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A rubber component, characterized in that, It includes a rubber gasket with a U-shaped groove in cross-section. The upper sides of both sides of the U-shaped groove are bent outward, forming a funnel-shaped opening structure at the top of the rubber gasket. The outer wall of the funnel-shaped opening structure is used to install an outer rubber tube, and the groove of the rubber gasket is used to install an inner rubber tube.

2. A rubber part according to claim 1, characterized in that, The rubber gasket comprises an integral upper and lower part. The lower part is a U-shaped groove structure, and the upper part is a rectangular plate structure. The two sides of the lower part are respectively connected to the upper part, and the angle between the two is outward. The angle between the vertical groove walls of the upper and lower parts is 30°-75°. The outer side of the upper part is used to install the outer rubber tube.

3. A rubber part according to claim 1, characterized in that, The rubber parts are integrally molded structures.

4. A rubber part according to claim 1, characterized in that, The rubber gasket is a solid gasket with a thickness greater than 1mm.

5. A rubber part according to claim 1, characterized in that, Both the inner and outer rubber tubes are hollow tubular structures with a wall thickness of 1 mm or more.

6. A rubber part according to claim 1, characterized in that, The outer walls of both the inner and outer rubber tubes are curved.

7. A rubber part according to claim 6, characterized in that, Both the inner and outer rubber tubes have a tubular cross-section that is either semi-circular, fully circular, elliptical, or semi-elliptical.

8. A sound-absorbing metal sound barrier, using the rubber component as described in any one of claims 1 to 7, characterized in that, The metal shell consists of a top plate, a bottom plate, two front panels, and two side plates. Inside the metal shell are several sound-absorbing panels. Adjacent sound-absorbing panels are connected by connecting rubber parts. A rubber part is provided between the sound-absorbing panel and the top plate, and between the sound-absorbing panel and the bottom plate, so that the inner rubber tube contacts the sound-absorbing panel and the outer rubber tube contacts the metal shell.

9. The sound-absorbing metal sound barrier according to claim 8, characterized in that, The connecting rubber component includes a middle gasket and front and back gaskets fixedly connected to both sides. The three gaskets form an I-shaped structure, and a U-shaped slot is formed on both sides of the middle gasket. Each slot is used to insert a sound-absorbing board.

10. The sound-absorbing metal sound barrier according to claim 8, characterized in that, The connecting rubber parts are integrally molded structures, and the thickness of the connecting rubber parts is greater than or equal to 1mm.

Images