Railway roadbed straight insertion type metal sound barrier unit plate

Abstract

The application discloses a railway roadbed direct-insertion type metal sound barrier unit plate, which comprises a unit plate structure one, wherein the unit plate structure one comprises a panel one and a back plate one, the upper and lower surfaces of the panel one and the back plate one are integrally formed with V-shaped convex pieces and T-shaped convex pieces, and the panel one and the back plate one are connected in a buckling mode through the V-shaped convex pieces and the T-shaped convex pieces. The structure adopts a sliding plug-in assembly mode, compared with an existing assembly mode of angle steel and bolts, so that the maintenance cost is reduced, the interface parameters are optimized by redefining the external structure size of the novel unit plate, 16 tubular rubber strips are arranged at the matching position of the unit plate and the groove of the steel stand column, pressure reduction and stress concentration are reduced through elastic deformation, meanwhile, the traditional angle steel and bolt fixing accessories are cancelled, the T-V type structure of the panel and the back plate is adopted, the rivet-free buckling is realized, and therefore the assembly efficiency between the unit plate structure and the 250 steel stand column is effectively improved.

Description

Technical Field

[0001] This invention relates to the field of roadbed sound barrier technology, and in particular to a direct-insertion metal sound barrier unit panel for railway roadbeds. Background Technology

[0002] In recent years, a large number of railway sound barriers have been installed to address noise pollution from railway operations. Currently, the metal sound barrier panels used in my country have various structural types, each with its own advantages and disadvantages. For example, those using non-metallic panels such as concrete and fiber cement, as well as particleboard sound-absorbing materials, suffer from issues such as heavy weight, poor sound absorption, poor waterproofing, and poor fatigue resistance. In particular, non-metallic panel panels for 4m span roadbeds with an operating life of 10 years or more exhibit typical defects such as cracking, bulging, and spalling. This is partly due to the inherent poor tensile strength and susceptibility to cracking of non-metallic materials such as concrete and fiber cement, which easily lead to cracking and spalling under long-term fatigue loads. Furthermore, the use of angle steel and bolts for fixing the non-metallic panels makes the bolts prone to corrosion and the nuts prone to slippage, and also easily causes localized stress concentration in the panel, further exacerbating damage.

[0003] Most existing sound barrier unit panels are installed in 250mm steel columns using angle steel and bolts. This installation method has certain shortcomings: not only do the bolts need to be tightened regularly to prevent loosening and affecting the use of the sound barrier, but the overall structure of the riveted assembly is also poor, hindering rapid assembly. Furthermore, the connection between the steel column and the unit panel either lacks a buffer structure or relies on rivets to install rubber strips for cushioning, but the method of rivets pressing down on the rubber strips is inconvenient for maintenance and can easily damage the strips during installation and disassembly. Therefore, it is essential to design a railway subgrade direct-insertion metal sound barrier unit panel that is easy to assemble and has a buffer function to solve the above problems. Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art, the purpose of this invention is to provide a railway subgrade direct-insertion metal sound barrier unit panel.

[0005] This design scheme for the 4-meter roadbed sound barrier unit panel is based on the internal cavity dimensions of the 250-type steel column, defining the external structural interface dimension of the unit panel as 207mm. Sixteen tubular rubber strips are designed at the mating points between the unit panel and the steel column groove to achieve pressure relief and buffering through elastic deformation, reducing stress concentration, while eliminating traditional angle steel and bolt fixing accessories. A TV-type structure for the face and back panels is adopted to achieve rivet-free fastening. 5754 aluminum alloy is selected as the material for the face and back panels, improving the durability of the unit panel surface compared to the original fiber and concrete panels, ultimately achieving a comprehensive benefit of increasing installation efficiency by more than 60% and extending the service life to more than 25 years.

[0006] The objective of this invention is achieved by the following technical solution: a railway subgrade direct-insertion metal sound barrier unit panel, comprising a unit panel structure one: the unit panel structure one includes a front panel one and a back panel one, the upper and lower surfaces of the front panel one and the back panel one are integrally formed with V-shaped protrusions and T-shaped protrusions, the front panel one and the back panel one are connected by the V-shaped protrusions and the T-shaped protrusions in a snap-fit ​​connection;

[0007] The unit panel structure 1 is provided with a buffer rubber strip at the mounting part of the external H-shaped steel column. An aluminum pressure strip is provided on the side of the unit panel structure 1 near the buffer rubber strip. The aluminum pressure strip is used to limit the position of the buffer rubber strip. Double tube rubber strips are provided on both side walls of the unit panel structure 1. The unit panel structure 1 is connected to the external H-shaped steel column in a sliding insertion structure through the double tube rubber strips and the buffer rubber strip.

[0008] According to the railway subgrade direct-insertion metal sound barrier unit panel, the panel is provided with a linear array of sound-absorbing areas, and the sound-absorbing areas are provided with sound-absorbing holes in a rectangular array. There are multiple sets of sound-absorbing areas, and the area between multiple sets of sound-absorbing areas without sound-absorbing holes is a reinforcement area. The reinforcement area is used to improve the rigidity of the panel.

[0009] According to the railway subgrade direct-insertion metal sound barrier unit panel, a sound-absorbing structure is provided between the unit panel structures.

[0010] According to the aforementioned railway subgrade direct-insertion metal sound barrier unit panel, the sound-absorbing structure includes a first fastening plate, a second fastening plate, a third fastening plate, a first sound-absorbing unit, a second sound-absorbing unit, a third sound-absorbing unit, and a fourth sound-absorbing unit. The first sound-absorbing unit is inserted between the first fastening plate and the second fastening plate, the second sound-absorbing unit is inserted between the second fastening plate and the third fastening plate, the third sound-absorbing unit is inserted between the first fastening plate and the first fastening plate, and the fourth sound-absorbing unit is inserted between the second fastening plate and the third fastening plate.

[0011] According to the railway subgrade direct-insertion metal sound barrier unit panel, both the front panel and the back panel are made of aluminum alloy.

[0012] According to the railway subgrade direct-insertion metal sound barrier unit panel, the sound-absorbing structure and the unit panel structure are detachable and assembleable.

[0013] According to the railway subgrade direct-insertion metal sound barrier unit panel, it further includes a unit panel structure two, which includes a front panel two and a back panel two. The front panel two is symmetrically provided with sound-absorbing areas two, and sound-absorbing holes two are opened in a rectangular array on the sound-absorbing areas two. There are two sets of sound-absorbing areas two. The area between the two sets of sound-absorbing areas two without sound-absorbing holes two is a reinforcement area two. The reinforcement area two is used to improve the rigidity of the front panel two.

[0014] The above-mentioned solution has the following beneficial effects:

[0015] This structure adopts a sliding plug-in assembly method, which reduces maintenance costs compared to the existing assembly method using angle steel and bolts. By redefining the external structural dimensions of the new unit panel and optimizing the interface parameters, 16 tubular rubber strips are designed at the mating position between the unit panel and the steel column groove to achieve pressure reduction and buffering and reduce stress concentration through elastic deformation. At the same time, traditional angle steel and bolt fixing accessories are eliminated. The TV-type structure of the front and back panels is adopted to achieve rivetless fastening, thereby effectively improving the assembly efficiency between the unit panel structure and the 250 steel column.

[0016] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0018] Figure 1 This is a schematic diagram of the overall structure of a railway subgrade direct-insertion metal sound barrier unit panel according to the present invention;

[0019] Figure 2 This is a schematic diagram of the overall front view structure of a unit panel of a railway subgrade direct-insertion metal sound barrier unit panel according to the present invention.

[0020] Figure 3 This is an exploded view of the overall structure of a unit panel of a railway subgrade direct-insertion metal sound barrier unit panel according to the present invention.

[0021] Figure 4 This is a schematic diagram of the sound-absorbing structure of a direct-insertion metal sound barrier unit panel for railway subgrade according to the present invention;

[0022] Figure 5 This is a schematic diagram of the second unit panel structure of a railway subgrade direct-insertion metal sound barrier unit panel according to the present invention;

[0023] Figure 6 This is a schematic diagram of the internal structure of the second unit panel structure of a railway subgrade direct-insertion metal sound barrier unit panel according to the present invention.

[0024] Figure 7 This is a schematic diagram of the second panel of a railway subgrade direct-insertion metal sound barrier unit panel according to the present invention;

[0025] Figure 8 This is a schematic diagram of the back plate two of a railway subgrade direct-insertion metal sound barrier unit plate according to the present invention.

[0026] Legend:

[0027] 1. Unit panel structure one; 101. Front panel one; 102. Back panel one; 103. V-shaped protrusion; 104. T-shaped protrusion; 2. Buffer strip; 3. Aluminum pressure strip; 4. Double tube strip; 5. Sound absorption zone one; 6. Sound absorption hole one; 7. Reinforcement zone one; 8. Sound absorption structure; 81. Fastening plate one; 82. Snap-fit ​​plate one; 83. Snap-fit ​​plate two; 84. Snap-fit ​​plate three; 85. Fastening plate two; 86. Sound absorption unit one; 87. Sound absorption unit two; 88. Sound absorption unit three; 89. Sound absorption unit four; 9. Unit panel structure two; 91. Front panel two; 92. Back panel two; 10. Sound absorption zone two; 11. Sound absorption hole two; 12. Reinforcement zone two. Detailed Implementation

[0028] This section will describe in detail specific embodiments of the present invention. Preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but they should not be construed as limiting the scope of protection of the present invention.

[0029] Example 1

[0030] Reference Figures 1-8A type of direct-insertion metal sound barrier unit panel for railway subgrade includes a unit panel structure 1: the unit panel structure 1 includes a front panel 101 and a back panel 102. The upper and lower surfaces of the front panel 101 and the back panel 102 are integrally formed with V-shaped protrusions 103 and T-shaped protrusions 104. The front panel 101 and the back panel 102 are connected by the V-shaped protrusions 103 and the T-shaped protrusions 104. A buffer strip 2 is provided at the installation part of the unit panel structure 1 and the external H-shaped steel column. An aluminum pressure strip 3 is provided on the side of the unit panel structure 1 near the buffer strip 2. The aluminum pressure strip 3 is used to limit the position of the buffer strip 2. Double-tube rubber strips 4 are provided on both side walls of the unit panel structure 1. The unit panel structure 1 is connected to the external H-shaped steel column by the double-tube rubber strips 4 and the buffer strips 2 in a sliding insertion structure. This unit panel structure is mainly suitable for 250-type H-shaped steel columns and is used in the field of roadbed sound barriers. This 4-meter roadbed sound barrier unit panel design is based on the internal cavity dimensions of the 250-type steel column, defining the external structural interface dimension of the unit panel as 207mm. The front panel 101 and back panel 102 of this unit panel structure 1 can be quickly assembled using V-shaped protrusions 103 and T-shaped protrusions 104. It should be noted that, to facilitate the fastening connection between the front panel 101 and back panel 102, the clearance between them is 1mm to achieve a tight and secure assembly. Buffer strips 2 and double-tube strips 4 are installed at the mounting points of the unit panel structure 1 and the external H-shaped steel column. Both the double-tube strips 4 and the buffer strips 2 are fixed using aluminum pressure strips 3. There are four sets of double-tube strips 4 and 16 buffer strips 2. The number of double-tube strips 4 and buffer strips 2 can be adjusted according to actual needs. The number of rubber strips 2 is adjusted so that the unit panel structure 1 can be directly slidably inserted into the mounting groove on the H-shaped steel column using the buffer rubber strips 2 and double-tube rubber strips 4. Compared with the existing method of using bolts and angle steel to assemble the unit panel structure 1 and the H-shaped steel column, this unit panel structure 1 can be directly slidably inserted into the mounting groove on the H-shaped steel column using the buffer rubber strips 2 and double-tube rubber strips 4. This not only eliminates the angle steel bolt structure, but also provides a buffering effect. The method of using aluminum pressure strips 3 to restrict the position of double-tube rubber strips 4 and buffer rubber strips 2 is simpler to fix than the method of using rivets, and facilitates later maintenance, assembly and disassembly. The method of using aluminum pressure strips 3 to fix buffer rubber strips 2 and double-tube rubber strips 4 can also prevent damage to both during assembly, effectively improving the practicality of this unit panel structure 1 and the ease of assembly between the unit panel structure 1 and the H-shaped steel column.

[0031] Panel 101 has a linear array of sound-absorbing areas 5, with sound-absorbing holes 6 arranged in a rectangular array on each area 5. There are multiple sets of sound-absorbing areas 5. The areas between these multiple sets of sound-absorbing areas 5 without sound-absorbing holes 6 form a reinforcement area 7, which is used to improve the rigidity of panel 101. Sound-absorbing structures 8 are arranged between unit panel structures 1. The sound-absorbing structure 8 includes a fastening plate 81, a snap-fit ​​plate 82, a second snap-fit ​​plate 83, a third snap-fit ​​plate 84, a second snap-fit ​​plate 85, and a sound-absorbing unit 86. Sound-absorbing unit 2 87, sound-absorbing unit 3 88, and sound-absorbing unit 4 89; sound-absorbing unit 1 86 is inserted between snap-fit ​​plate 1 82 and snap-fit ​​plate 2 83; sound-absorbing unit 2 87 is inserted between snap-fit ​​plate 2 83 and snap-fit ​​plate 3 84; sound-absorbing unit 3 88 is inserted between fastening plate 1 81 and snap-fit ​​plate 1 82; sound-absorbing unit 4 89 is inserted between fastening plate 2 85 and snap-fit ​​plate 3 84; both front panel 1 101 and back panel 102 are made of aluminum alloy; the sound-absorbing structure 8 and the unit panel structure 1 are detachable and assembleable. When this unit board structure 1 is in use, sound is transmitted through sound-absorbing holes 6 to the sound-absorbing structure 8 set inside the unit board structure 1. The sound is absorbed by the sound-absorbing structure 8 to achieve the purpose of noise reduction. Sound-absorbing unit 1 86, sound-absorbing unit 2 87, sound-absorbing unit 3 88, and sound-absorbing unit 4 89 are all sound-absorbing materials of rock wool combined with fiber cement pressure board. This is existing technology and will not be discussed in detail.

[0032] Working principle: When assembling unit panel structure 1 for use, firstly, using fastening plate 1 81, snap-fit ​​plate 1 82, snap-fit ​​plate 2 83, snap-fit ​​plate 3 84, and fastening plate 2 85, sound-absorbing unit 1 86, sound-absorbing unit 2 87, sound-absorbing unit 3 88, and sound-absorbing unit 4 89 are assembled. Then, using the VT structure set on panel 1 101 and back panel 102, panel 1 101 and back panel 102 are fastened together. The fastening of panel 1 101 and back panel 102 directly confines the sound-absorbing structure 8 inside both, thus completing the assembly of unit panel structure 1. Afterwards, the double-tube adhesive strip 4 and buffer adhesive strip 2 are connected using aluminum pressure strip 3. Installed on the exterior of unit panel structure 1, unit panel structure 1 is then directly slidably assembled onto the 250-type H-beam steel column via buffer strips 4 and double-tube strips 2 for use. This unit panel structure 1 redefines the external structural dimensions and optimizes the interface parameters. Sixteen tubular buffer strips 4 are designed at the mating position between unit panel structure 1 and the steel column groove to achieve pressure reduction and buffering and reduce stress concentration through elastic deformation. At the same time, traditional angle steel and bolt fixing accessories are eliminated. A TV-type structure for the front and back panels is adopted to achieve rivetless fastening, effectively improving assembly efficiency and practicality.

[0033] Example 2

[0034] like Figure 5-8As shown, the distinguishing feature of this embodiment from that of embodiment 1 is that it also includes a second unit board structure 9, which includes a second front panel 91 and a second back panel 92. The second front panel 91 is symmetrically provided with second sound absorption areas 10. The second sound absorption areas 10 are provided with second sound absorption holes 11 in a rectangular array. There are two sets of second sound absorption areas 10. The area between the two sets of second sound absorption areas 10 without second sound absorption holes 11 is a second reinforcement area 12. The second reinforcement area 12 is used to improve the rigidity of the second front panel 91.

[0035] In practical use, this unit panel structure 29 is mainly suitable for 250 type H-shaped steel columns. Except for the number of panels 291 and the size of the openings of panels 101 in unit panel structure 11, the working principle and structure of unit panel structure 29 and unit panel structure 11 are the same. Existing sound barrier panel structures all adopt the method of full perforation. The method of full perforation will cause the perforated parts to be recessed during use. The reason for the recess is stress concentration. Therefore, this unit panel structure 11 and unit panel structure 29 have a part set as non-perforated, namely reinforcement area 7 and reinforcement area 212, thereby enhancing rigidity, reducing stress concentration, and extending service life.

[0036] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A type of railway subgrade direct-insertion metal sound barrier unit panel, characterized in that, The unit panel structure includes a first panel (1): the first panel (1) includes a first panel (101) and a first back panel (102). The upper and lower surfaces of the first panel (101) and the first back panel (102) are integrally formed with V-shaped protrusions (103) and T-shaped protrusions (104). The first panel (101) and the first back panel (102) are connected by the V-shaped protrusions (103) and the T-shaped protrusions (104). The unit panel structure (1) is provided with a buffer strip (2) at the installation part of the external H-shaped steel column. An aluminum pressure strip (3) is provided on the side of the unit panel structure (1) near the buffer strip (2). The aluminum pressure strip (3) is used to limit the position of the buffer strip (2). Double tube strips (4) are provided on both side walls of the unit panel structure (1). The unit panel structure (1) is connected to the external H-shaped steel column in a sliding insertion structure through the double tube strips (4) and the buffer strip (2).

2. The railway subgrade direct-insertion metal sound barrier unit panel according to claim 1, characterized in that, The panel (101) is provided with a linear array of sound-absorbing areas (5), and the sound-absorbing areas (5) are provided with sound-absorbing holes (6) in a rectangular array. There are multiple sets of sound-absorbing areas (5). The area between multiple sets of sound-absorbing areas (5) without sound-absorbing holes (6) is a reinforcement area (7). The reinforcement area (7) is used to improve the rigidity of the panel (101).

3. The railway subgrade direct-insertion metal sound barrier unit panel according to claim 1, characterized in that, A sound-absorbing structure (8) is provided between the unit board structure (1).

4. A railway subgrade direct-insertion metal sound barrier unit panel according to claim 3, characterized in that, The sound-absorbing structure (8) includes a first fastening plate (81), a first snap-fit ​​plate (82), a second snap-fit ​​plate (83), a third snap-fit ​​plate (84), a second fastening plate (85), a first sound-absorbing unit (86), a second sound-absorbing unit (87), a third sound-absorbing unit (88), and a fourth sound-absorbing unit (89). The first sound-absorbing unit (86) is inserted between the first snap-fit ​​plate (82) and the second snap-fit ​​plate (83). The second sound-absorbing unit (87) is inserted between the second snap-fit ​​plate (83) and the third snap-fit ​​plate (84). The third sound-absorbing unit (88) is inserted between the first fastening plate (81) and the first snap-fit ​​plate (82). The fourth sound-absorbing unit (89) is inserted between the second fastening plate (85) and the third snap-fit ​​plate (84).

5. A railway subgrade direct-insertion metal sound barrier unit panel according to claim 1, characterized in that, Both the first panel (101) and the first back panel (102) are made of aluminum alloy.

6. A railway subgrade direct-insertion metal sound barrier unit panel according to claim 2, characterized in that, The sound-absorbing structure (8) and the unit board structure (1) are detachable and can be assembled separately.

7. A railway subgrade direct-insertion metal sound barrier unit panel according to claim 2, characterized in that, It also includes a second unit board structure (9), which includes a second front panel (91) and a second back panel (92). The second front panel (91) is symmetrically provided with a second sound-absorbing area (10). The second sound-absorbing area (10) is provided with a second sound-absorbing hole (11) in a rectangular array. There are two sets of the second sound-absorbing areas (10). The area between the two sets of the second sound-absorbing areas (10) without the second sound-absorbing hole (11) is the second reinforcement area (12). The second reinforcement area (12) is used to improve the rigidity of the second front panel (91).

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