Inserting plate type metal sound barrier unit plate

Abstract

The utility model discloses an inserting plate type metal sound barrier unit plate, which belongs to the technical field of sound barriers, and comprises a back plate and a panel buckled with the back plate, the panel comprises a plurality of arc plate parts, a flat plate part is formed between the adjacent arc plate parts, and a plurality of through holes are arranged on the panel. The panel is provided with a plurality of through holes, the size and density of the through holes can be designed according to noise of different frequencies to adapt to different noise reduction use scenes, the bending part is provided with holes with different diameters, the noise of different frequencies can be attenuated, and the effect of blocking a sound bridge can be achieved; a plurality of arc plate parts are arranged on the panel, the reflection angle of noise is changed, multiple times of reflection and superposition of the noise between the surface of a vehicle body and the sound barrier panel are avoided, meanwhile, the strength of the panel is improved, and the rigidity of the panel is greatly improved; and the rubber pads are arranged between the unit plates which are stacked up and down, so that the buffering and sealing effects are achieved, the sound leakage phenomenon is completely eradicated, and the sound insulation effect of the sound barrier unit plates is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of sound barriers, and specifically relates to a plug-in type metal sound barrier unit plate. Background Art

[0002] Currently, high-speed rail sound barriers commonly use H-shaped steel columns with two wings parallel to the railway. A sheet metal sound-absorbing panel box is inserted between the two columns. The working surface of this box, facing the railway, is made of perforated aluminum alloy sheeting, while the back is made of non-perforated aluminum or galvanized sheeting. This absorbs the wind from the high-speed trains. As a result, the noise generated during the train's movement is reflected and superimposed on the train and sound barrier surfaces, increasing the noise intensity and impact range, completely negating the effectiveness of the sound barrier. High-speed trains, when entering, exiting, and traveling within sound barrier areas, experience wind resistance from the sound barrier. Without measures to slowly release the high-energy noise, this energy concentration can trigger a destructive "sonic boom," potentially causing safety hazards for train operations. Utility Model Content

[0003] Technical problem: In response to the above-mentioned problems existing in the prior art, the technical problem to be solved by the present invention is to provide a plug-in type metal sound barrier unit plate to improve the sound insulation effect.

[0004] Technical solution: In order to solve the above technical problems, the technical solution adopted by this utility model is as follows:

[0005] A plug-in type metal sound barrier unit plate includes a back plate and a panel buckled with the back plate, the panel includes a plurality of arc plate parts, a flat plate part is formed between adjacent arc plate parts, and a plurality of through holes are provided on the panel.

[0006] Furthermore, the through holes include a plurality of first holes arranged at equal distances on the arc plate portion and a plurality of second holes arranged at equal distances on the flat plate portion.

[0007] Furthermore, the through holes also include third holes arranged on the arc plate portion, and the flat plate portion is provided with a plurality of fourth hole groups.

[0008] Furthermore, the first hole and the third hole are both circular holes, the straight line perpendicular to the plane where the first hole is located is A, A is perpendicular to the panel, the straight line perpendicular to the plane where the third hole is located is B, the angle between B and A is α, 30°≤α≤70°.

[0009] Furthermore, the third holes are arranged in two rows on the arc plate portion.

[0010] Furthermore, the upper end of the back panel is bent to form a first bending portion, the lower end of the back panel is bent to form a second bending portion, the upper end of the panel is bent to form a third bending portion corresponding to the first bending portion, and the lower end of the panel is bent to form a fourth bending portion corresponding to the second bending portion.

[0011] Furthermore, the first bending portion is provided with a first protruding portion protruding upward, and the second bending portion is provided with a second protruding portion protruding upward and corresponding to the first protruding portion.

[0012] Furthermore, the third bending portion is provided with a seventh through hole group, and the fourth bending portion is provided with an eighth through hole group.

[0013] Furthermore, a rubber pad is provided on the third bending portion, and a ninth through hole group is provided on the rubber pad.

[0014] Beneficial effects: Compared with the prior art, the utility model has the following advantages:

[0015] 1. The panel is equipped with multiple through holes. The size and density of the through holes can be designed for noises of different frequencies to adapt to different noise reduction scenarios. For the same panel thickness with different opening diameters, vibration can be generated for noises of a specific frequency. That is, the structure has a special vibration reduction and noise reduction effect for noises of that frequency.

[0016] 2. At the joint of the front panel and the back panel, holes of different diameters are opened on the bent part, which has the effect of layer-by-layer mutation, attenuating noises of different frequencies and also blocking sound bridges;

[0017] 3. Multiple arc plates are set on the panel to change the reflection angle of noise, avoid multiple reflections and superposition of noise between the vehicle surface and the sound barrier panel, and at the same time increase the strength of the panel, making the panel rigid. Noise is blocked by the arc surface sound bridge and intercepted layer by layer. The flat plate is between the arc plates, and the first hole on the arc plate forms an angle with the second hole on the flat plate, so as to obtain the best vibration reduction and noise reduction effect, and the sound absorption coefficient can reach above 0.85;

[0018] 4. The diameter of the holes on the curved panels varies periodically, which can attenuate noise of different frequencies and act as a phononic crystal. When multiple sound barriers are stacked, a rubber pad with holes of the same shape is added between the upper and lower fastening surfaces. The holes on the arc plate, flat plate, and bent part of the structure are staggered with the corresponding holes on the rubber pads, and are not concentric and have different diameters. For sound waves carried by the airflow, detached vortices are formed, further isolating the sound bridge.

[0019] 5. The rubber pad plays a buffering and sealing role between the upper and lower stacked unit panels, eliminating sound leakage and increasing the sound insulation effect of the sound barrier unit panels. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the upper side structure of the utility model;

[0022] Figure 3 It is a schematic diagram of the panel structure;

[0023] Figure 4 It is a schematic diagram of the panel cross-section structure;

[0024] Figure 5 It is a schematic diagram of the front structure of the panel;

[0025] Figure 6 2. It is a schematic diagram of the angle between the first hole and the third hole on the arc plate;

[0026] Figure 7 1 is a schematic diagram of the side structure of the back plate;

[0027] Figure 8 Schematic diagram of the top view of the back plate;

[0028] Figure 9 1. It is a schematic diagram of the structure of the back plate when viewed from above;

[0029] Figure 10 yes Figure 3 Enlarged view of the M in the middle;

[0030] Figure 11 yes Figure 3 Enlarged view of point N in the middle;

[0031] Figure 12 It is a schematic diagram of the rubber pad structure. DETAILED DESCRIPTION

[0032] The present invention will be further illustrated below with reference to specific examples. The examples are implemented based on the technical solutions of the present invention. It should be understood that these examples are only used to illustrate the present invention and are not used to limit the scope of the present invention.

[0033] like Figure 1 and Figure 2 As shown, a plug-in type metal sound barrier unit plate includes a back plate 1, a panel 2, and a rubber pad 9. The panel 2 is buckled with the back plate 1, and the rubber pad 9 is located on the panel 2.

[0034] like Figure 3 and Figure 4 As shown, the panel 2 includes a plurality of arc plate portions 21 , which are semicircular plates. The arc plate portions 21 are arranged at equal distances laterally on the panel 2 , and flat plate portions 22 are formed between adjacent arc plate portions 21 .

[0035] like Figure 5 and Figure 6 As shown, the panel 2 is provided with a plurality of through holes, including a plurality of first holes 31, a plurality of second holes 32 and a plurality of third holes 33. The first holes 31, the second holes 32 and the third holes 33 are all circular holes. The plurality of first holes 31 are arranged horizontally and equidistantly on the arc plate portion 21, and the diameter range of the first holes 31 is 5-8 mm. The plurality of second holes 32 are arranged horizontally and equidistantly on the flat plate portion 22, and the diameter range of the second holes 32 is 1-2 mm. The plurality of third holes 33 are arranged in two rows on the arc plate portion 21 and are arranged on both sides of the row where the plurality of first holes 31 are located, and are staggered with the position of the first holes 31. The diameter range of the third holes 33 is 2-3 mm. The opening of three holes with different diameters can fully absorb sound waves of different frequencies, complete the conversion from sound to vibration and to heat energy, and achieve the function of shock absorption and noise reduction. The plane of the first hole 31 is parallel to the plane of the flat plate portion 22. A line perpendicular to the plane of the first hole 31 is A, which is perpendicular to the panel 2. A line perpendicular to the plane of the third hole 33 is B. The third holes 33 are arranged in two rows, resulting in two lines B. The angle between B and A is α, which is equal to 60°. Setting this angle ensures the accuracy and uniform arrangement of the hole positions, ensuring sound absorption, and avoiding areas where there are no relevant holes. If there are no holes, sound reflection will occur, affecting the sound absorption effect. The flat plate portion 22 is also provided with multiple fourth hole groups 34. The fourth hole groups 34 include one or more forty-first and forty-second holes. The diameters of the forty-first and forty-second holes are smaller than those of the second holes 32. The fourth hole groups 34 are arranged periodically in the horizontal direction of the flat plate portion 22.

[0036] like Figure 1 、 Figure 2 、 Figure 4 、 Figure 7 、 Figure 8 and Figure 9As shown, the upper end of the back panel 1 is bent 90° toward the panel 2 to form a first bend 11. The lower end of the back panel 1 is bent 90° toward the panel 2 to form a second bend 12. The upper end of the panel 2 is bent inward 90° to form a third bend 23 corresponding to the first bend 11. The lower end of the panel 2 is bent inward 90° to form a fourth bend 24 corresponding to the second bend 12. The first bend 11 is provided with an upwardly projecting first protrusion 111. The first protrusion 111 is strip-shaped with a trapezoidal cross-section. The second bend 12 is provided with an upwardly projecting second protrusion 121 corresponding to the first protrusion 111. The third bend 23 is provided with an upwardly projecting third protrusion 231. The shape of the third protrusion 231 corresponds to the shape of the first protrusion 111. When the panel 2 and the back panel 1 are fastened together, the third protrusion 231 is located on the first bend 11. The fourth bend portion 24 is bent inwards by 90° and then bent upwards to form an inclined plate portion 241. When the panel 2 is fastened to the back panel 1, the fourth bend portion 24 is abutted against the second bend portion 12. When multiple unit panels are stacked up and down, the protrusion formed by the first protrusion 111 and the second protrusion 121 enters the groove formed below the third protrusion 231. The back panel 1 is provided with a first side panel 13 and a second side panel 14 on both sides. The first side panel 13 and the second side panel 14 are bent inwards by 90° respectively. When the panel 2 is fastened to the back panel 1, the front ends of the first side panel 13 and the second side panel 14 are abutted against the side of the panel 2, thereby closing the sound barrier unit panel from the side.

[0037] like Figure 10 and Figure 11As shown, a seventh through hole group is provided on the third bending portion 23, the seventh through hole group includes a seventy-first through hole group 71 provided on the third protruding portion 231 and a seventy-second through hole group 72 provided on the third bending portion 23, the seventy-first through hole group 71 includes three seventy-first circular holes with gradually decreasing diameters, and the three seventy-first circular holes with gradually decreasing diameters are equidistantly distributed, and multiple groups of the seventy-first through hole group 71 are provided on the top of the third protruding portion 231, the seventy-second through hole group 72 includes three seventy-second circular holes with gradually decreasing diameters, and the three seventy-second circular holes with gradually decreasing diameters are equidistantly distributed, and the seventy-second through hole group 72 is provided in two rows on the third bending portion 23 on both sides of the third protruding portion 231. The fourth bend 24 is provided with an eighth through-hole group, comprising an eighty-first through-hole group 81 and an eighty-second through-hole group 82. The eighty-first through-hole group 81 includes three eighty-first circular holes of gradually decreasing diameters, which are evenly spaced. Multiple groups of the eighty-first through-hole group 81 are provided on the fourth bend 24. The eighty-second through-hole group 82 is provided on the inclined plate 241. The eighty-second through-hole group 82 includes three eighty-second circular holes of gradually decreasing diameters, which are evenly spaced. Multiple groups of the eighty-second through-hole group 82 are provided on the inclined plate 241. The holes of different diameters on the multiple bends create a layered, abrupt change in appearance, attenuating noise of different frequencies and blocking sound bridges.

[0038] like Figure 2 、 Figure 10 and Figure 12 As shown, a rubber pad 9 is provided on the third bending portion 23, and a first protrusion 93 corresponding to the third protrusion 231 is provided on the rubber pad 9. When the rubber pad 9 is placed on the third bending portion 23, it can fit on the third bending portion 23. When multiple unit plates are stacked for use, the rubber pad 9 plays a buffering role. A ninth through hole group is provided on the rubber pad 9, and the ninth through hole group includes a ninety-first through hole group 91 arranged on the first protrusion 93 and a ninety-second through hole group 92 arranged in other parts. The ninety-first through hole group 91 includes two holes of different sizes and the positions of the holes are staggered with the positions of the seventy-first through hole group 71 on the third protrusion 231. The ninety-second through hole group 92 includes two circular holes of different sizes and the circular holes with larger diameters are arranged in two rows and the circular holes with smaller diameters are arranged in four rows. The circular holes of the ninety-second through hole group 92 are staggered with the hole positions of the seventy-second through hole group 72 on the third bending portion 23. The staggered design is conducive to forming a blocking blind hole, and for the sound waves entrained by the airflow, a detached vortex is formed to further isolate the sound bridge.

[0039] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A plug-in type metal sound barrier unit plate, characterized in that: The invention comprises a back plate (1) and a panel (2) buckled with the back plate (1); the panel (2) comprises a plurality of arc plate portions (21); a flat plate portion (22) is formed between adjacent arc plate portions (21); and a plurality of through holes are provided on the panel (2).

2. The plug-in type metal sound barrier unit plate according to claim 1, characterized in that: The through holes include a plurality of first holes (31) arranged at equal distances on the arc plate portion (21) and a plurality of second holes (32) arranged at equal distances on the flat plate portion (22).

3. The plug-in type metal sound barrier unit plate according to claim 2, characterized in that: The through holes further include third holes (33) arranged on the arc plate portion (21), and a plurality of fourth hole groups (34) are provided on the flat plate portion (22).

4. The plug-in type metal sound barrier unit plate according to claim 3, characterized in that: The first hole (31) and the third hole (33) are both circular holes, a straight line perpendicular to the plane where the first hole (31) is located is A, A is perpendicular to the panel (2), a straight line perpendicular to the plane where the third hole (33) is located is B, and an angle between B and A is α, 30°≤α≤70°.

5. The plug-in type metal sound barrier unit plate according to claim 4, characterized in that: The third holes (33) are arranged in two rows on the arc plate portion (21).

6. The plug-in type metal sound barrier unit plate according to claim 1, characterized in that: The upper end of the back plate (1) is bent to form a first bending portion (11), the lower end of the back plate (1) is bent to form a second bending portion (12), the upper end of the panel (2) is bent to form a third bending portion (23) corresponding to the first bending portion (11), and the lower end of the panel (2) is bent to form a fourth bending portion (24) corresponding to the second bending portion (12).

7. The plug-in type metal sound barrier unit plate according to claim 6, characterized in that: The first bending portion (11) is provided with a first protruding portion (111) protruding upward, and the second bending portion (12) is provided with a second protruding portion (121) protruding upward and corresponding to the first protruding portion (111).

8. The plug-in type metal sound barrier unit plate according to claim 7, characterized in that: The third bending portion (23) is provided with a seventh through hole group, and the fourth bending portion (24) is provided with an eighth through hole group.

9. The plug-in type metal sound barrier unit plate according to claim 8, characterized in that: A rubber pad (9) is provided on the third bending portion (23), and a ninth through hole group is provided on the rubber pad (9).

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