Railway metal sound barrier with anti-falling function

Abstract

The embodiment of the invention provides a railway metal sound barrier with an anti-falling function, which is suitable for the fields of high-speed railways, inter-city railways, city express lines, urban rail transit and the like, and mainly comprises a variable cross-section metal unit plate sound barrier surface back plate, a multi-sound-cavity composite sound absorption assembly, a rubber part, an H-shaped steel upright post and the like. The H-shaped steel stand columns are arranged at intervals in the first direction and provided with limiting grooves. The two sides of the metal sound absorption unit plates are inserted between the adjacent H-shaped steel stand columns. According to the technology provided by the invention, the safety risks of unit plate jumping out, falling off and the like caused by the problems of construction deviation, product tolerance and the like can be eliminated, and the sound barrier has the advantage of convenience in installation, and meanwhile, the sound absorption frequency band can be regulated and controlled according to the noise source characteristics through the design of the multi-sound-cavity composite sound absorption assembly, so that the comprehensive performance of the sound barrier is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of sound absorption noise reduction technology, and in particular to a railway metal sound barrier with anti-falling function. BACKGROUND

[0002] A sound barrier, also known as a soundproof wall or soundproof barrier, is a structure designed specifically to absorb, block, or reflect sound waves. Sound barriers are usually set up between noise sources such as roads, railways, airports, industrial areas, and sound environment protection targets such as residential areas, schools, and hospitals to reduce the impact of noise pollution.

[0003] At present, the operating mileage of China's railways has exceeded 150,000 kilometers, and a large number of sound barriers are set up on both sides of the line to alleviate the impact of railway noise. The plug-in plate type metal sound barrier is widely used in China's railways, which stacks multiple metal unit plates and inserts them into H-shaped steel columns, and the sealing and damping effects are achieved by the damping elements between the plates and columns. In the current related technology, due to the combined effects of construction deviations, product tolerances, and long-term service conditions, there is a risk of unit plate leakage and even falling, which affects the structure's function and stability. Since the railway sound barrier is relatively close to the track line, the aerodynamic effect caused by high-speed train passing is significant, and problems such as metal plate crack propagation and rubber part falling have been found in field applications, so it is necessary to further improve the structural strength and fatigue resistance. In addition, there are differences in the characteristics of railway noise sources under different operating speeds and line conditions, and enhancing the designability and controllability of the sound barrier's acoustic performance is beneficial to improving the noise reduction effect.

[0004] In related technology, a railway metal sound barrier usually includes metal sound-absorbing unit plates and H-shaped steel columns, and the metal sound-absorbing unit plates are arranged between two H-shaped steel columns. However, in actual application, due to the precision of on-site construction, the spacing of the H-shaped steel columns may be deviated, which may cause the overlap length of the metal sound-absorbing unit plates and the H-shaped steel columns to be insufficient, thereby affecting the structural stability of the railway metal sound barrier. In addition, the thickness of the railway metal sound barrier unit plate is generally limited to within 140 mm, which restricts the design space of the acoustic components. SUMMARY

[0005] The embodiments of the present application provide a railway metal sound barrier with anti-falling function to solve or alleviate one or more technical problems in the prior art.

[0006] As one aspect of the embodiments of the present application, the embodiments of the present application provide a railway metal sound barrier with anti-falling function, which includes metal sound-absorbing unit plates and two H-shaped steel columns with limiting grooves;

[0007] The two H-shaped steel columns are installed at intervals along a first direction, and the notches of the H-shaped steel columns are arranged facing each other in the first direction;

[0008] Two sides of the metal sound absorption unit plate in the first direction are respectively inserted into notches of two adjacent H-shaped steel columns, the metal sound absorption unit plate is inserted into the limiting groove, the thickness of the metal sound absorption unit plate is matched with the size of the notch of the H-shaped steel column in the second direction, and the thickness of the part of the structure of the metal sound absorption unit plate outside the notch is greater than the size of the notch of the H-shaped steel column in the second direction; in the first direction, the part of the structure of the metal sound absorption unit plate outside the notch abuts against the two H-shaped steel columns respectively; wherein, the first direction and the second direction are orthogonal.

[0009] In some embodiments, at least one inner side wall of the limiting groove is defined with an inner side rib, at least one side surface of the metal sound absorption unit plate in the second direction is defined with a guide groove, and the inner side rib is clamped in the guide groove.

[0010] In some embodiments, the metal sound absorption unit plate comprises a perforated panel, a back plate, an internal support profile, a sound absorption assembly and a rubber piece, the perforated panel and the back plate constitute a first sound absorption cavity, the internal support profile and the sound absorption assembly are arranged in the first sound absorption cavity, and the rubber piece is arranged at a position where the metal sound absorption unit plate is overlapped with the H-shaped steel column and at the bottom of the metal sound absorption unit plate.

[0011] In some embodiments, the perforated panel and the back plate are an integrated bending and forming structure, the perforated panel comprises a main plate, a first left side plate, a first right side plate, a first upper side plate and a first lower side plate, the back plate comprises a back plate, a second left side plate corresponding to the first left side plate, a second right side plate corresponding to the first right side plate, a second upper side plate corresponding to the first upper side plate and a second lower side plate corresponding to the first lower side plate; the main plate and the back plate are oppositely arranged, the first left side plate and the second left side plate are clamped, the first right side plate and the second right side plate are clamped, the first upper side plate and the second upper side plate are clamped, and the first lower side plate and the second lower side plate are clamped.

[0012] In some embodiments, among two side surfaces of the metal sound absorption unit plate in a direction parallel to the extension direction of the limiting groove, one side surface is provided with a clamping protrusion, and the other side surface is provided with a clamping groove.

[0013] In some embodiments, the number of the metal sound absorption unit plates is at least two.

[0014] Among the two metal sound absorption unit plates, the clamping protrusion of the first metal sound absorption unit plate is clamped in the clamping groove of the second metal sound absorption unit plate, or the clamping protrusion of the second metal sound absorption unit plate is clamped in the clamping groove of the first metal sound absorption unit plate.

[0015] In some embodiments, the plurality of metal sound absorption unit plates are stacked and installed in an up-down direction, the clamping protrusion of the lower metal sound absorption unit plate is clamped in the clamping groove of the upper metal sound absorption unit plate.

[0016] In some embodiments, the number of internal support profiles is at least three, and two ends of the internal support profiles are respectively clamped with the upper side plate and the lower side plate of the metal sound absorption unit plate;

[0017] The left and right sides of the internal support profile at the middle position in the first sound absorption cavity are provided with a first notch for mounting a sound absorption assembly, and one side of the internal support profile at the two end positions in the first sound absorption cavity is provided with a second notch for mounting a sound absorption assembly.

[0018] In some embodiments, when the sound absorption assembly is clamped to the internal support profile, the sound absorption assembly is arranged adjacent to the open hole panel.

[0019] In some embodiments, a plurality of internal support profiles are arranged in the first sound absorption cavity to divide the first sound absorption cavity into a plurality of independent sound cavities, and the volumes of the plurality of independent sound cavities can be the same or different.

[0020] The embodiments of the present application have the following beneficial effects:

[0021] The railway metal sound barrier with anti-falling function provided by the present application is based on the mechanical and acoustic collaborative design concept, which effectively improves the comprehensive performance of the sound barrier. Through the combination design of the metal sound absorption unit plate and the H-shaped steel column with a limiting groove, the installation precision of the unit plate is improved and the anti-falling function is realized, and the design space of the sound absorption assembly is expanded to improve the acoustic performance of the unit plate.

[0022] The above summary is merely intended to illustrate the present application and is not intended to limit in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the present application will be readily apparent to those skilled in the art by reference to the drawings and the following detailed description. BRIEF DESCRIPTION OF DRAWINGS

[0023] In the drawings, like reference numerals refer to same or similar components throughout the several views. These drawings are not necessarily to scale. It should be understood that these drawings are merely schematic and certain features can be exaggerated for the purposes of illustration.

[0024] Figure 1 A structure schematic diagram of the railway metal sound barrier with anti-falling function according to the embodiments of the present application is shown;

[0025] Figure 2 A structure schematic diagram of the metal sound absorption unit plate according to the embodiments of the present application is shown; Figure 1 An enlarged schematic diagram of the middle A is shown;

[0026] Figure 3 A structure schematic diagram of the metal sound absorption unit plate according to the embodiments of the present application is shown;

[0027] Figure 4Fig. 1 shows a structural schematic diagram of an H-shaped steel column according to an embodiment of the present application;

[0028] Figure 5 Fig. 5 shows a structural schematic diagram of a metal sound absorption unit plate according to an embodiment of the present application;

[0029] Figure 6 Fig. 6 shows an exploded schematic diagram of two adjacent metal sound absorption unit plates according to an embodiment of the present application;

[0030] Figure 7 Fig. 7 shows a structural schematic diagram of a rubber strip according to an embodiment of the present application;

[0031] Figure 8 Fig. 8 shows a structural schematic diagram of an open hole panel according to an embodiment of the present application;

[0032] Figure 9 Fig. 9 shows a structural schematic diagram of a back plate according to an embodiment of the present application.

[0033] BRIEF DESCRIPTION OF DRAWINGS

[0034] 1. Railway metal sound barrier with anti-falling function;

[0035] 10. H-shaped steel column; 11. Limiting groove; 111. Inner side rib; 112. Rubber strip; 12. Support plate;

[0036] 20. Metal sound absorption unit plate; 21. Limiting boss; 22. Limiting end face; 23. Metal sound absorption unit plate body; 231. First sound absorption cavity; 232. Sound absorption hole; 233. Guide groove; 24. Limiting plate; 241. Second sound absorption cavity; 25. Clamping protrusion; 26. Clamping groove; 27. Open hole panel; 271. Main plate; 272. First left side plate; 273. First right side plate; 274. First upper side plate; 275. First lower side plate; 28. Back plate; 281. Back body; 282. Second left side plate; 283. Second right side plate; 284. Second upper side plate; 285. Second lower side plate;

[0037] X, first direction; Y, second direction. DETAILED DESCRIPTION

[0038] In the following, only certain exemplary embodiments are simply described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the present application. Therefore, the drawings and the description are considered to be exemplary in nature rather than limiting.

[0039] A sound barrier, also known as a noise barrier or acoustic barrier, is a structure designed to absorb, block, or reflect sound waves. It is typically installed between noise sources such as roads, railways, airports, industrial areas, and sound environment protection targets such as residential areas, schools, and hospitals to reduce the impact of noise pollution.

[0040] In related technologies, a railway metal sound barrier usually includes metal sound-absorbing unit plates and two H-shaped steel columns, and the metal sound-absorbing unit plates are arranged between the two H-shaped steel columns. However, in actual applications, due to the combined effects of construction deviations, product tolerances, and long-term service conditions, there is a risk of unit plate escape or even falling off, which affects the structure's function and stability.

[0041] Based on this, the present application provides a railway metal sound barrier 1 with an anti-falling function. The metal sound-absorbing unit plate 20 adopts a variable cross-section design and forms a cooperation relationship with the H-shaped steel column 10 to realize the anti-falling function. The metal sound-absorbing unit plate 20 and the internal support profile are optimized in structure by integrated design, and a multi-cavity composite sound-absorbing assembly is designed to adjust the sound-absorbing frequency band according to the target noise reduction frequency band, effectively improving the comprehensive performance of the sound barrier, thereby solving the problems in related technologies.

[0042] Figure 1 A structural schematic diagram of a railway metal sound barrier 1 with an anti-falling function according to an embodiment of the present application is shown, Figure 2 A structural schematic diagram of a railway metal sound barrier 1 with an anti-falling function according to an embodiment of the present application is shown, Figure 1 An enlarged schematic diagram of A, Figure 3 A structural schematic diagram of a metal sound-absorbing unit plate 20 according to an embodiment of the present application is shown, referring to Figures 1 to 3 The railway metal sound barrier 1 with an anti-falling function includes two H-shaped steel columns 10 and at least one metal sound-absorbing unit plate 20. The two H-shaped steel columns 10 are arranged at intervals along a first direction X, and each H-shaped steel column 10 defines a limiting groove 11. The openings of the two limiting grooves 11 are arranged in the first direction X, and each limiting groove 11 has two inner side walls arranged opposite to each other in a second direction Y.

[0043] The two sides of the metal sound-absorbing unit plate 20 in the first direction X are respectively inserted into the limiting grooves 11 of the adjacent two H-shaped steel columns 10. The thickness of the metal sound-absorbing unit plate 20 inserted into the limiting grooves 11 matches the size of the limiting grooves 11 of the H-shaped steel columns 10 in the second direction Y. The thickness of the part of the metal sound-absorbing unit plate 20 outside the limiting grooves 11 is greater than the size of the limiting grooves 11 of the H-shaped steel columns 10 in the second direction Y. In the first direction X, the part of the metal sound-absorbing unit plate 20 outside the limiting grooves 11 abuts against the two H-shaped steel columns 10, thereby limiting the metal sound-absorbing unit plate 20 and the two H-shaped steel columns 10. The first direction X and the second direction Y are orthogonal.

[0044] In some examples, the first direction X and the second direction Y are perpendicular, and the first level and the second level extend along the horizontal direction. It should be noted that "perpendicular" also includes the case of being approximately perpendicular in the engineering sense. For example, "perpendicular" can be a state in which the angle formed by a straight line and a straight line, a straight line and a plane, or a plane and a plane is 80° to 110°.

[0045] Exemplarily, the first direction X is the length direction of the metal sound absorption unit plate 20, and the second direction is the thickness direction of the metal sound absorption unit plate 20.

[0046] Referring to Figure 1 and Figure 2 , at least one metal sound absorption unit plate 20 is arranged between two H-shaped steel columns 10. The metal sound absorption unit plate 20 has a limiting boss 21 on each side in the first direction X, which is the part of the metal sound absorption unit plate inserted into the limiting groove 11. At least one of the two side surfaces of the limiting boss 21 in the second direction Y abuts against the corresponding inner side wall of the limiting groove 11 in the second direction Y, so as to limit the metal sound absorption unit plate 20 and the two H-shaped steel columns 10.

[0047] In some embodiments, the H-shaped steel column 10 is connected with the foundation through a pre-buried bolt.

[0048] In some examples, the two side surfaces of each limiting boss 21 in the second direction Y abut against the two inner side walls of the corresponding limiting groove 11, respectively.

[0049] In other examples, one side surface of the limiting boss 21 in the second direction Y abuts against one inner side wall of the limiting groove 11 in the second direction Y.

[0050] According to the embodiment of the present application, two H-shaped steel columns 10 can be installed in advance at the installation site, and then the limiting protrusions 21 on both sides of the metal sound-absorbing unit plate 20 are clamped into the limiting grooves 11 of the two H-shaped steel columns 10, thereby limiting the metal sound-absorbing unit plate 20 and the two H-shaped steel columns 10. Secondly, since the opening directions of the limiting grooves 11 of the two H-shaped steel columns 10 in the first direction X are oppositely arranged, the metal sound-absorbing unit plate 20 can be conveniently inserted into the limiting grooves 11 from top to bottom, thereby making the installation process of the railway metal sound barrier 1 with the anti-falling function more simple and fast, and further improving the installation efficiency of the railway metal sound barrier 1 with the anti-falling function and reducing the construction time of the railway metal sound barrier 1 with the anti-falling function. Furthermore, the two side surfaces of the limiting protrusion 21 in the second direction Y are respectively in abutment with the two inner side walls of the corresponding limiting groove 11, and the side surface of the limiting protrusion 21 in the first direction X is separated from the inner side wall of the limiting groove 11 in the first direction X and has a predetermined distance. In this way, when the railway metal sound barrier 1 with the anti-falling function of the present application is installed, two H-shaped steel columns 10 are installed on the ground in advance, and then the metal sound-absorbing unit plate 20 is inserted into the limiting grooves 11 of the two H-shaped steel columns 10 from top to bottom. During the installation process, considering the production error of the factory and the convenience of on-site installation, the distance between the two H-shaped steel columns 10 needs to be set larger than the size of the metal sound-absorbing unit plate 20 in the first direction X in advance, so as to reserve a predetermined distance between the two H-shaped steel columns 10, that is, the distance between the two inner side walls of the limiting grooves 11 of the two H-shaped steel columns 10 in the first direction X is D1, and the size of the metal sound-absorbing unit plate 20 in the first direction X is D2, which needs to satisfy D1>D2, so that the predetermined distance between the two H-shaped steel columns 10 can effectively accommodate the production error of the H-shaped steel column 10 and the metal sound-absorbing unit plate 20, and ensure that the metal sound-absorbing unit plate 20 can be smoothly installed into the limiting groove 11, avoiding the production error of the metal sound-absorbing unit plate 20 and the H-shaped steel column 10 causing the metal sound-absorbing unit plate 20 unable to be inserted into the limiting grooves 11 of the adjacent two H-shaped steel columns 10, so that the worker can easily insert the metal sound-absorbing unit plate 20 into the limiting grooves 11 of the two H-shaped steel columns 10 from top to bottom during the installation process.

[0051] It can be understood that the present application does not limit the specific structure of the H-shaped steel column 10. In some examples, the structure of the H-shaped steel column 10 can be a rectangular pipe, a circular pipe or an H-shaped steel. Preferably, the H-shaped steel column 10 is an H-shaped steel, the groove body of which is the limiting groove 11, and the two H-shaped steels are arranged at intervals along the first direction X, and the limiting grooves 11 of the two H-shaped steels are oppositely arranged in the first direction X, and the limiting protrusions of the metal sound-absorbing unit plate 20 can be clamped in the groove body formed by the H-shaped steel. It should be noted that the above is only an example and does not constitute a limitation on the present application.

[0052] In some embodiments, referring to Figure 6 , at least one inner side wall of the limiting groove 11 is defined with an inner side rib 111, and at least one side surface of the metal sound-absorbing unit plate body 23 in the second direction Y is defined with a guide groove 233, and the inner side rib 111 is clamped in the guide groove 233.

[0053] Exemplarily, the H-shaped steel column 10 and the limiting groove 11 extend in the vertical direction, the inner side rib 111 and the guide groove 233 extend in the vertical direction, and when the metal sound-absorbing unit plate body 23 needs to be inserted from the top end of the limiting groove 11 in the vertical direction, the inner side rib 111 on the H-shaped steel column 10 plays a guiding role on the metal sound-absorbing unit plate body 23, so as to avoid the metal sound-absorbing unit plate 20 from moving in the first direction X after installation is completed, thereby causing the metal sound-absorbing unit plate 20 to be separated from the limiting groove 11.

[0054] In some embodiments, the metal sound-absorbing unit plate 20 comprises a perforated panel 27, a back plate 28, an internal support profile 30, a sound-absorbing assembly and a rubber piece, the perforated panel 27 and the back plate 28 are combined to form a first sound-absorbing cavity 231, the internal support profile 30 and the sound-absorbing assembly are arranged in the first sound-absorbing cavity 231, and the rubber piece is arranged at a position where the metal sound-absorbing unit plate 20 is overlapped with the H-shaped steel column 10 and at the bottom of the metal sound-absorbing unit plate 20.

[0055] According to the embodiments of the present application, the arrangement of the rubber piece can slow down the vibration of the metal sound-absorbing unit plate 20.

[0056] Figure 8 A structural schematic diagram of the perforated panel 27 according to the embodiments of the present application is shown, Figure 9 A structural schematic diagram of the back plate 28 according to the embodiments of the present application is shown, in some embodiments, the perforated panel 27 and the back plate 28 are an integrated bending and forming structure, the perforated panel 27 comprises a main plate 271, a first left side plate 272, a first right side plate 273, a first upper side plate 274 and a first lower side plate 275, and the back plate 28 comprises a back body 281, a second left side plate 282 corresponding to the first left side plate 272, a second right side plate 283 corresponding to the first right side plate 273, a second upper side plate 284 corresponding to the first upper side plate 274 and a second lower side plate 285 corresponding to the first lower side plate 275; the main plate 271 and the back body 281 are oppositely arranged, the first left side plate 272 and the second left side plate 282 are clamped, the first right side plate 273 and the second right side plate 283 are clamped, the first upper side plate 274 and the second upper side plate 284 are clamped, and the first lower side plate 275 and the second lower side plate 285 are clamped, so as to assemble the metal sound-absorbing unit plate 20.

[0057] It should be noted that a plurality of through holes are arranged on the perforated panel 27 to absorb noise.

[0058] In some embodiments, referring to Figures 1 to 3 , the two sides of the metal sound absorption unit plate 20 in the first direction X also have limiting end faces 22 respectively, the limiting end faces 22 are adjacent to the limiting bosses 21 in the second direction Y, the limiting end faces 22 and the end faces of the limiting bosses 21 have a cross-sectional difference in the first direction X, that is, the end faces of the limiting bosses 21 and the limiting end faces 22 of the metal sound absorption unit plate 20 are spaced apart in the first direction X, and the two limiting end faces 22 respectively form abutments with parts of the two H-shaped steel columns 10.

[0059] Exemplarily, when the H-shaped steel column 10 is an H-shaped steel, two H-shaped steels need to be pre-installed on the ground in advance, and then the metal sound absorption unit plate 20 is inserted into the limiting grooves 11 of the two H-shaped steels from top to bottom. During the insertion process, one of the limiting end faces 22 of the metal sound absorption unit plate 20 abuts against the edges of the two H-shaped steels, so as to realize the guiding and limiting effects of the metal sound absorption unit plate 20.

[0060] According to the embodiments of the present application, on the one hand, the distance between the two limiting grooves 11 is pre-set to be greater than the size of the metal sound absorption unit plate 20 in the first direction X, and a predetermined distance is reserved between the two limiting grooves 11, so that the predetermined distance can ensure that the metal sound absorption unit plate 20 can be smoothly inserted into the limiting grooves 11, avoiding the production errors of the metal sound absorption unit plate 20 and the H-shaped steel column 10 causing the metal sound absorption unit plate 20 unable to be inserted into the limiting grooves 11 of the adjacent two H-shaped steel columns 10, so that the worker can easily insert the metal sound absorption unit plate 20 into the limiting grooves 11 of the two H-shaped steel columns 10 from top to bottom during the installation process. On the other hand, after the metal sound absorption unit plate 20 is installed in the limiting grooves 11 of the two H-shaped steel columns 10, since there is a reserved distance between the adjacent two H-shaped steel columns 10, when the metal sound absorption unit plate 20 is subjected to an external force during use, it will move in the first direction X, thereby causing the limiting boss 21 on one side of the metal sound absorption unit plate 20 to be separated from the limiting groove 11. Therefore, the present application prevents the metal sound absorption unit plate 20 from moving in the first direction X when subjected to an external force during use by abutting the limiting end face 22 of the metal sound absorption unit plate 20 against the edges of the two H-shaped steels, so as to realize the limiting effect of the metal sound absorption unit plate 20.

[0061] Figure 4 The structure schematic diagram of the H-shaped steel column 10 according to the embodiments of the present application is shown, referring to Figure 2 and Figure 4 In some embodiments, the H-shaped steel column 10 includes support plates 12 spaced apart in the second direction Y, and the limiting groove 11 is defined by at least two support plates 12, and the limiting end face 22 forms an abutment with the edge of one of the support plates 12.

[0062] Exemplarily, the H-shaped steel column 10 further comprises a mounting plate, two edges of the mounting plate in the second direction Y are respectively connected with the two support plates 12, so as to form the H-shaped steel column 10 with a H-shaped cross section. When the metal sound-absorbing unit plate 20 is mounted in the limiting groove 11, the two side surfaces of the limiting protrusions in the second direction Y are respectively abutted against the two support plates 12, and the limiting end surface 22 of the metal sound-absorbing unit plate 20 is abutted against the edge of one of the support plates 12, so as to prevent the metal sound-absorbing unit plate 20 from moving in the first direction X due to external force in use, thereby achieving the limiting effect on the metal sound-absorbing unit plate 20 and avoiding the metal sound-absorbing unit plate 20 from moving in the first direction X and thus being separated from the limiting groove 11.

[0063] In some examples, referring to Figure 1 and Figure 2 , one of the two limiting end surfaces 22 can be abutted against the edge of one of the support plates 12. In other examples, the two limiting end surfaces 22 can be respectively abutted against the edges of the two support plates 12, so as to achieve the limiting effect on the metal sound-absorbing unit plate 20 and avoid the metal sound-absorbing unit plate 20 from moving in the first direction X and thus being separated from the limiting groove 11.

[0064] In some embodiments, referring to Figures 1 to 3 , the metal sound-absorbing unit plate 20 comprises a metal sound-absorbing unit plate body 23 and a limiting plate 24 arranged in layers, the limiting protrusions 21 are defined by the metal sound-absorbing unit plate body 23 and the limiting plate 24, and the limiting end surface 22 is defined by the limiting plate 24.

[0065] Exemplarily, the metal sound-absorbing unit plate body 23 and the limiting plate 24 are arranged in layers in the second direction Y, the limiting plate 24 has a size in the first direction X smaller than that of the metal sound-absorbing unit plate body 23 in the first direction X, so that one of the limiting protrusions 21 is defined between one side edge of the metal sound-absorbing unit plate body 23 in the first direction X and one side edge of the limiting plate 24 in the first direction X, and the other limiting protrusion 21 is defined between the other side edge of the metal sound-absorbing unit plate body 23 in the first direction X and the other side edge of the limiting plate 24 in the first direction X. The two limiting protrusions are respectively clamped in the limiting grooves 11 of the two H-shaped steel columns 10, so as to achieve the mounting and fixing between the metal sound-absorbing unit plate 20 and the two H-shaped steel columns 10.

[0066] Figure 5 Fig. 2 shows a schematic view of the internal structure of the metal sound-absorbing unit plate 20 according to an embodiment of the present application, Figure 6 Fig. 3 shows an exploded schematic view of two adjacent metal sound-absorbing unit plates 20 according to an embodiment of the present application, in some embodiments, referring to Figures 1 to 3 ,Figure 5 and Figure 6 The metal sound-absorbing unit plate 20 includes a metal sound-absorbing unit plate body 23 and a limiting plate 24 stacked together, the metal sound-absorbing unit plate body 23 defines a first sound-absorbing cavity 231, and the metal sound-absorbing unit plate body 23 defines at least one sound-absorbing hole 232 communicating with the first sound-absorbing cavity 231.

[0067] Exemplarily, the metal sound-absorbing unit plate body 23 and the limiting plate 24 are stacked along the second direction Y. When the railway metal sound barrier 1 with the anti-falling function is installed on site, the side of the metal sound-absorbing unit plate body 23 provided with the sound-absorbing hole 232 faces the railway, and the noise generated by the passing train on the railway can enter the first sound-absorbing cavity 231 through the sound-absorbing hole 232, so that the railway metal sound barrier 1 with the anti-falling function can more effectively capture and absorb the noise on the railway, avoid the reflection and diffusion of the noise on the railway, and thus improve the sound-absorbing effect. Secondly, the first sound-absorbing cavity 231 can effectively absorb and eliminate the traffic noise generated by the train and improve the resonance effect, thereby hindering the propagation of the noise.

[0068] In some examples, a sound insulation layer is arranged on the side wall of the first sound-absorbing cavity 231, which can block the propagation of the noise, thereby improving the sound-absorbing effect of the railway metal sound barrier 1 with the anti-falling function.

[0069] Exemplarily, the sound insulation layer can be at least one of a medium density fiberboard (MDF), a gypsum board, a rubber sound insulation pad, a polyurethane foam (PU foam), a sound insulation felt, a polyethylene foam (PE foam), a mineral wool board, a fiber cement board, a sound insulation glass, a composite sound insulation board, a cork board, and a heavy vinyl sound insulation film. It should be noted that the sound insulation layer can be selected according to actual needs by those skilled in the art, and the present application does not limit this.

[0070] In some embodiments, the sound-absorbing hole 232 and the limiting plate 24 are respectively arranged on both sides of the metal sound-absorbing unit plate body 23 in the second direction Y.

[0071] According to the embodiment of the present application, when the railway metal sound barrier 1 with the anti-falling function is installed on site, the sound absorption holes 232 of the metal sound absorption unit plate body 23 are directed towards the railway line, and the limiting plate 24 is arranged on the side of the metal sound absorption unit plate body 23 away from the railway. In this way, on the one hand, the first sound absorption cavity 231 can directly face the metal sound absorption unit plate 20, so that the first sound absorption cavity 231 can effectively absorb and eliminate the traffic noise generated by the motor train, thereby improving the resonance effect of the first sound absorption cavity 231 and enhancing the sound absorption effect of the railway metal sound barrier 1 with the anti-falling function, reducing noise pollution, and improving the comfort of the environment. On the other hand, the limiting end surface 22 of the limiting plate 24 can abut against the edge of the H-shaped steel, thereby achieving the limiting effect of the metal sound absorption unit plate 20, so as to ensure that the metal sound absorption unit plate 20 can be firmly fixed between the two H-shaped steel columns 10 after installation, avoiding the situation that the metal sound absorption unit plate 20 moves along the first direction X and thus causes the metal sound absorption unit plate 20 to disengage from the limiting groove 11, which is conducive to improving the structural stability and safety of the railway metal sound barrier 1 with the anti-falling function. On the other hand, the limiting plate 24 is arranged on the side of the metal sound absorption unit plate body 23 away from the railway, so that the limiting plate 24 does not occupy the space of the railway, avoiding the potential impact on the railway operation, and ensuring the safety of the railway metal sound barrier 1 with the anti-falling function during use.

[0072] In some embodiments, the limiting plate 24 defines a second sound absorption cavity 241, and the first sound absorption cavity 231 and the second sound absorption cavity 241 are in communication.

[0073] According to the embodiment of the present application, the first sound absorption cavity 231 and the second sound absorption cavity 241 are in communication, which can effectively increase the volume of the sound absorption cavity and effectively improve the overall sound absorption efficiency of the railway metal sound barrier 1 with the anti-falling function, thereby more fully absorbing and eliminating the noise generated by the motor train and significantly reducing the noise level around the railway. Secondly, the railway metal sound barrier 1 with the anti-falling function of the present application communicates the first sound absorption cavity 231 and the second sound absorption cavity 241, so that the railway metal sound barrier 1 with the anti-falling function can more effectively absorb noise of different frequency bands, which is conducive to improving the resonance absorption effect of noise of different frequencies, thereby realizing noise control of a wider frequency band and improving the sound insulation performance of the railway metal sound barrier 1 with the anti-falling function.

[0074] In some embodiments, referring to Figure 5 , the railway metal sound barrier 1 with the anti-falling function further comprises at least one internal support profile 30, and the at least one internal support profile 30 is arranged in the first sound absorption cavity 231.

[0075] According to the embodiment of the present application, the internal support profile 30 arranged in the first sound absorption cavity 231 can provide additional support and fixing effect for the metal sound absorption unit plate 20, which is conducive to enhancing the structural stability of the metal sound absorption unit plate 20, especially when facing external wind or vibration, which can better keep the metal sound absorption unit plate 20 stable and prevent the metal sound absorption unit plate 20 from displacement or deformation. Secondly, the internal support profile 30 can not only provide support for the metal sound absorption unit plate 20, but also increase the support points in the first sound absorption cavity 231, thereby increasing the structural strength of the first sound absorption cavity 231, so as to prevent the first sound absorption cavity 231 from deforming due to external force, which is conducive to prolonging the service life of the railway metal sound barrier 1 with anti-falling function. Furthermore, the arrangement of the internal support profile 30 can optimize the internal structure of the first sound absorption cavity 231, so that the propagation path of sound waves in the first sound absorption cavity 231 and the second sound absorption cavity 241 is more complex, thereby improving the reflection and absorption effect of sound waves in the sound absorption cavity, which is conducive to further improving the sound absorption efficiency of the railway metal sound barrier 1 with anti-falling function and reducing the noise level of the surrounding environment of the railway.

[0076] In some embodiments, referring to Figure 5 , at least one internal support profile 30 is arranged in the first sound absorption cavity 231 along the first direction X.

[0077] According to the embodiment of the present application, the internal support profile 30 is arranged in the first sound absorption cavity 231 along the first direction X, so that the stress on the metal sound absorption unit plate 20 on the railway metal sound barrier 1 with anti-falling function is more uniform, so that the present application can effectively prevent stress from concentrating on a certain position of the metal sound absorption unit plate 20, thereby reducing the risk of deformation or damage of the metal sound absorption unit plate 20 due to excessive local stress, and further improving the overall durability and stability of the railway metal sound barrier 1 with anti-falling function. Secondly, the multiple internal support profiles 30 arranged at intervals provide multiple-point support for the metal sound absorption unit plate 20, which can significantly enhance the overall stability of the metal sound absorption unit plate 20, especially when facing external wind or vibration, which can better keep the metal sound absorption unit plate 20 stable. Furthermore, the multiple internal support profiles 30 arranged at intervals make the sound wave propagation path in the first sound absorption cavity 231 more complex, which is conducive to increasing the reflection and absorption times of sound waves, further improving the sound absorption effect, and further improving the sound absorption efficiency of the railway metal sound barrier 1 with anti-falling function and reducing the noise level of the surrounding environment of the railway.

[0078] In some examples, the internal support profiles 30 can be slidably arranged in the first sound absorption cavity 231 along the first direction X, so that the volume of the cavity defined between the internal support profiles 30 can be adjusted by adjusting the position of the internal support profiles 30, thereby dividing the first sound absorption cavity 231 into sound absorption sub-cavities of different volumes, and enabling the first sound absorption cavity 231 and the second sound absorption cavity 241 to simultaneously absorb noise of different frequency widths, thereby expanding the noise reduction range of the railway metal sound barrier 1 with the anti-falling function.

[0079] It should be noted that in the present example, part of the internal support profiles 30 can also be slidably arranged in the first sound absorption cavity 231 or part of the internal support profiles 30 can be fixedly arranged in the first sound absorption cavity 231, which is not limited herein.

[0080] In other examples, different from the above examples, the plurality of internal support profiles 30 in the present example are fixed in the first sound absorption cavity 231, and the distance between the adjacent two internal support profiles 30 is adjusted according to the actual application environment when the metal sound absorption unit plate 20 is manufactured in the factory, so that the metal sound absorption unit plate 20 has a plurality of sound absorption sub-cavities of different volumes, and the first sound absorption cavity 231 and the second sound absorption cavity 241 can simultaneously absorb noise of different frequency widths, thereby expanding the noise reduction range of the railway metal sound barrier 1 with the anti-falling function.

[0081] In some embodiments, the internal support profiles 30 are provided with sound absorption components, which can effectively absorb the sound waves of the first sound absorption cavity 231 and the second sound absorption cavity 241, reduce the reflection and propagation of the sound waves, thereby reducing the propagation path of the noise, and further improving the sound absorption efficiency of the railway metal sound barrier 1 with the anti-falling function and reducing the noise level.

[0082] In some embodiments, the sound absorption components include at least one of glass fiber, rock wool, foamed metal, PET plate, sponge and melamine foam.

[0083] For example, the sound absorption components include glass fiber or rock wool, which can significantly improve the control of the railway metal sound barrier 1 with the anti-falling function in the medium and high frequency noise control.

[0084] For example, the sound absorption components include foamed metal, which has good sound absorption performance, corrosion resistance, high temperature resistance and mechanical impact resistance, and can work stably for a long time in harsh environments, thereby ensuring the sound absorption effect of the railway metal sound barrier 1 with the anti-falling function.

[0085] Exemplarily, the sound-absorbing assembly includes PET plates and sponges, which have good sound-absorbing and flexibility, can effectively absorb most of the incident sound waves in the first sound-absorbing cavity 231 and the second sound-absorbing cavity 241, reduce sound wave reflection, significantly reduce the environmental noise around the railway, and improve the sound insulation effect of the railway metal sound barrier 1 with the anti-falling function.

[0086] Exemplarily, the sound-absorbing assembly includes melamine foams, which have excellent sound-absorbing effect and fire resistance, and can ensure that the railway metal sound barrier 1 with the anti-falling function remains stable in a high-temperature environment.

[0087] It should be noted that the sound-absorbing assembly can include one or more of the above materials. In other embodiments, the sound-absorbing unit can also include materials other than the above, such as polyester fiber sound-absorbing plates, wooden sound-absorbing plates, rubber sound-absorbing plates, etc., which are not limited in the present application.

[0088] Exemplarily, the number of the internal support profiles 30 is at least three, and the upper and lower ends of the internal support profiles 30 are respectively connected with the upper plate and the lower plate of the metal sound-absorbing unit plate 20.

[0089] The left and right sides of the internal support profiles at the middle position in the first sound-absorbing cavity 231 are provided with first notches for mounting the sound-absorbing assembly, and the single side of the internal support profiles 30 at the two end positions in the first sound-absorbing cavity 231 is provided with a second notch for mounting the sound-absorbing assembly. In this way, the sound-absorbing assembly can pass through the first notches of all the internal support profiles at the middle position, and the two ends of the sound-absorbing assembly can be respectively clamped in the second notches of the internal support profiles 30 at the two end positions.

[0090] In some embodiments, when the sound-absorbing assembly is clamped on the internal support profiles 30, the sound-absorbing assembly is arranged adjacent to the open hole panel. In this way, the sound-absorbing assembly can absorb the noise transmitted from the open hole panel.

[0091] In some embodiments, a plurality of internal support profiles 30 are arranged in the first sound-absorbing cavity 231 to divide the first sound-absorbing cavity 231 into a plurality of independent sound cavities. The volumes of the plurality of independent sound cavities can be the same or different. In this way, the back cavity depth and the sound-absorbing assembly thickness of each independent sound cavity can be designed differently to realize sound-absorbing band control.

[0092] Figure 7 A structure schematic diagram of a rubber strip according to an embodiment of the present application is shown. Referring to Figure 2 , Figure 4 and Figure 7In some embodiments, at least one of the inner side walls of the limiting groove 11 is provided with a rubber strip 112, which abuts against the metal sound-absorbing unit plate body 23 and is in a compressed state, thereby further improving the stability between the H-shaped steel stand 10 and the metal sound-absorbing unit plate body 23.

[0093] For example, both side walls of the limiting groove 11 are provided with rubber strips 112, which extend in the vertical direction and abut against the metal sound-absorbing unit plate body 23 when the metal sound-absorbing unit plate body 23 is inserted into the limiting groove 11, and the rubber strips 112 are in a compressed state, thereby pressing the metal sound-absorbing unit plate body 23 tightly in the limiting groove 11.

[0094] In some examples, the number of rubber strips 112 is two, and the two rubber strips 112 are arranged in the first direction X, thereby increasing the contact area between the rubber strips 112 and the metal sound-absorbing unit plate body 23, and improving the pressing effect of the rubber strips 112 on the metal sound-absorbing unit plate body 23.

[0095] In some embodiments, referring to Figure 6 Among the two side surfaces of the metal sound-absorbing unit plate 20 in the direction parallel to the extension direction of the limiting groove 11, one side surface is provided with the clamping protrusion 25, and the other side surface is provided with the clamping groove 26.

[0096] In some examples, the limiting groove 11 extends in the vertical direction, the top end of the metal sound-absorbing unit plate 20 in the vertical direction is provided with the clamping protrusion 25, and the bottom end of the metal sound-absorbing unit plate 20 in the vertical direction is provided with the clamping groove 26. In other examples, the limiting groove 11 extends in the vertical direction, the bottom end of the metal sound-absorbing unit plate 20 in the vertical direction is provided with the clamping protrusion 25, and the top end of the metal sound-absorbing unit plate 20 in the vertical direction is provided with the clamping groove 26.

[0097] In some embodiments, the number of metal sound-absorbing unit plates 20 is at least two. Among the two adjacent metal sound-absorbing unit plates 20, the clamping protrusion 25 of the first metal sound-absorbing unit plate 20 is clamped in the clamping groove 26 of the second metal sound-absorbing unit plate 20, or the clamping protrusion 25 of the second metal sound-absorbing unit plate 20 is clamped in the clamping groove 26 of the first metal sound-absorbing unit plate 20.

[0098] In some examples, when the clamping protrusion 25 is arranged at the top of the metal sound-absorbing unit plate 20 and the clamping groove 26 is arranged at the bottom of the metal sound-absorbing unit plate 20, the clamping protrusion 25 of the metal sound-absorbing unit plate 20 at the bottom among the two adjacent metal sound-absorbing unit plates 20 is clamped in the clamping groove 26 of the metal sound-absorbing unit plate 20 at the top, thereby limiting the two adjacent metal sound-absorbing unit plates 20.

[0099] In some examples, when the clamping protrusion 25 is arranged at the bottom of the metal sound-absorbing unit plate 20 and the clamping groove 26 is arranged at the top of the metal sound-absorbing unit plate 20, the clamping protrusion 25 of the metal sound-absorbing unit plate 20 at the top of the two adjacent metal sound-absorbing unit plates 20 is clamped in the clamping groove 26 of the metal sound-absorbing unit plate 20 at the bottom, so as to limit the two adjacent metal sound-absorbing unit plates 20.

[0100] In the description of this specification, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0101] In addition, the terms "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0102] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected, or it can be communicated; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication or interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0103] In this application, unless otherwise explicitly specified and limited, "on" or "under" of a first feature with respect to a second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, "on", "above" and "on top of" of a first feature with respect to a second feature includes that the first feature is directly above and obliquely above the second feature, or only means that the first feature is horizontally higher than the second feature. "Under", "below" and "underneath" of a first feature with respect to a second feature includes that the first feature is directly below and obliquely below the second feature, or only means that the first feature is horizontally lower than the second feature.

[0104] The above disclosure provides many different embodiments or examples for implementing different structures of the present application. For the purpose of simplification, the components and arrangements of specific examples are described in the above. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeatedly refer to numbers and / or letters in different examples, and such repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various embodiments and / or arrangements discussed.

[0105] The above description is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of various changes or replacements within the technical scope disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A railway metal sound barrier with anti-fall-off function, characterized in that, Includes metal sound-absorbing unit panels and two H-shaped steel columns with limiting grooves; Two H-shaped steel columns are installed at intervals along a first direction, and the limiting grooves of the H-shaped steel columns are arranged facing each other in the first direction; The metal sound-absorbing unit panel is inserted into the limiting grooves of two adjacent H-shaped steel columns on both sides in the first direction. The thickness of the metal sound-absorbing unit panel inserted into the limiting groove matches the size of the limiting groove of the H-shaped steel column in the second direction. The thickness of the portion of the metal sound-absorbing unit panel outside the limiting groove is greater than the size of the limiting groove of the H-shaped steel column in the second direction. In the first direction, the portion of the metal sound-absorbing unit panel outside the limiting groove abuts against the two H-shaped steel columns. The first direction and the second direction are orthogonal.

2. The railway metal sound barrier with anti-fall-off function according to claim 1, characterized in that, An inner rib is defined in at least one inner wall of the limiting groove, and a guide groove is defined on at least one side of the metal sound-absorbing unit plate in the second direction, with the inner rib being engaged in the guide groove.

3. The railway metal sound barrier with anti-fall-off function according to claim 1, characterized in that, The metal sound-absorbing unit panel includes a perforated panel, a back panel, an internal support profile, a sound-absorbing component, and a rubber component. The perforated panel and the back panel form a first sound-absorbing cavity. The internal support profile and the sound-absorbing component are disposed within the first sound-absorbing cavity. The rubber component is disposed at the position where the metal sound-absorbing unit panel overlaps with the H-shaped steel column and at the bottom of the metal sound-absorbing unit panel.

4. The railway metal sound barrier with anti-fall-off function according to claim 3, characterized in that, The perforated panel and the back panel are integrally bent and formed structures. The perforated panel includes a main board, a first left side panel, a first right side panel, a first upper side panel, and a first lower side panel. The back panel includes a back body, a second left side panel corresponding to the first left side panel, a second right side panel corresponding to the first right side panel, a second upper side panel corresponding to the first upper side panel, and a second lower side panel corresponding to the first lower side panel. The main board and the back body are arranged opposite to each other. The first left side panel and the second left side panel are snapped together, the first right side panel and the second right side panel are snapped together, the first upper side panel and the second upper side panel are snapped together, and the first lower side panel and the second lower side panel are snapped together.

5. The railway metal sound barrier with anti-fall-off function according to claim 3, characterized in that, Of the two side surfaces of the metal sound-absorbing unit plate in a direction parallel to the extension direction of the limiting groove, one side surface is provided with a locking protrusion and the other side surface is provided with a locking groove.

6. The railway metal sound barrier with anti-fall-off function according to claim 5, characterized in that, The number of the metal sound-absorbing unit panels is at least two; In particular, in two adjacent metal sound-absorbing unit plates, the locking protrusion of the first metal sound-absorbing unit plate is locked in the locking groove of the second metal sound-absorbing unit plate; or, the locking protrusion of the second metal sound-absorbing unit plate is locked in the locking groove of the first metal sound-absorbing unit plate.

7. The railway metal sound barrier with anti-fall-off function according to any one of claims 1 to 6, characterized in that, Multiple metal sound-absorbing unit boards are stacked one on top of the other, with the locking protrusion of the lower metal sound-absorbing unit board locking into the locking groove of the upper metal sound-absorbing unit board.

8. The railway metal sound barrier with anti-fall-off function according to claim 3, characterized in that, The number of internal support profiles is at least three, and the two ends of the internal support profiles are respectively snapped into the upper and lower side plates of the metal sound-absorbing unit plate; The internal support profile at the middle position of the first sound absorption cavity has first slots on the left and right sides for installing sound absorption components, and the internal support profile at both ends of the first sound absorption cavity has second slots on one side for installing sound absorption components.

9. The railway metal sound barrier with anti-fall-off function according to claim 3, characterized in that, When the sound-absorbing component is installed in the internal support profile, the sound-absorbing component is arranged adjacent to the perforated panel.

10. The railway metal sound barrier with anti-fall-off function according to claim 3, characterized in that, Multiple internal support profiles are disposed within the first sound-absorbing cavity to divide the first sound-absorbing cavity into multiple independent sound cavities, the volumes of which may be the same or different.

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