Sound insulation and noise reduction device for rail transit bridge

Abstract

The utility model provides a sound insulation and noise reduction device for a rail transit bridge, which comprises a sound insulation and noise reduction base plate, wherein an accommodating groove is formed in the inner side wall of the sound insulation and noise reduction base plate; the movable frame is rotationally connected to the interior of the containing groove through a bearing, and an X-shaped support is fixedly arranged in the middle of the movable frame; the sound absorption cotton and the sound insulation plate are arranged in the movable frame respectively, and the sound absorption cotton and the sound insulation plate are arranged on the two sides of the X-shaped support respectively; and the protection plate is arranged on the sound insulation and noise reduction base plate, and the protection plate covers the containing groove. According to the device, noise can be subjected to double weakening and noise reduction through the sound absorption cotton and the sound insulation plate, the sound insulation and noise reduction effect is improved, the containing groove is detached from the sound insulation and noise reduction base plate, the movable frame is rotated out of the containing groove around the hinge shaft, the sound absorption cotton and the sound insulation plate can be pulled out of the inserting groove to be cleaned or replaced, and operation is convenient and fast.

Description

Technical Field

[0001] This utility model relates to the field of rail transit technology, specifically to a sound insulation and noise reduction device for rail transit bridges. Background Technology

[0002] Bridges generally refer to structures built across rivers, lakes, and seas to allow vehicles and pedestrians to pass smoothly. To adapt to the rapidly developing modern transportation industry, the term "bridge" has also come to refer to structures built across mountains, challenging geological conditions, or to meet other transportation needs, making travel more convenient. Currently, most existing bridges have exposed railings on both sides, resulting in poor sound insulation and noise reduction capabilities. Sound insulation and noise reduction treatments are needed.

[0003] In existing sound insulation and noise reduction devices, the sound insulation cotton and the main body of the noise reduction board are fixed as one piece, which is inconvenient for personnel to clean and replace. After the sound insulation cotton is covered with a lot of dust and ages, the sound insulation and noise reduction effect of the device will be greatly reduced. Utility Model Content

[0004] In view of this, the problem to be solved by this utility model is to provide a sound insulation and noise reduction device for rail transit bridges. This device can reduce noise in two ways through sound-absorbing cotton and sound insulation board, thereby improving the sound insulation and noise reduction effect. By removing the storage slot from the sound insulation and noise reduction base plate and rotating the movable frame out of the receiving slot around the hinge axis, the sound-absorbing cotton and sound insulation board can be pulled out of the insertion slot for cleaning or replacement, which is convenient to operate.

[0005] This utility model solves the above-mentioned technical problems through the following technical means: This utility model provides a sound insulation and noise reduction device for rail transit bridges, comprising,

[0006] Sound insulation and noise reduction substrate: A receiving groove is provided on the inner side wall of the sound insulation and noise reduction substrate;

[0007] Movable frame: The movable frame is rotatably connected to the inside of the receiving groove via bearings, and an X-shaped bracket is fixedly installed in the middle of the movable frame;

[0008] Sound-absorbing cotton and sound-insulating board: The sound-absorbing cotton and sound-insulating board are respectively installed inside the movable frame, and the sound-absorbing cotton and sound-insulating board are respectively installed on both sides of the X-shaped bracket;

[0009] Protective plate: The protective plate is set on the sound insulation and noise reduction substrate and covers the receiving groove.

[0010] Furthermore, the movable frame is configured as an inverted triangle (U-shape). Hinges are provided on both sides of the inverted triangle movable frame near the bottom edge, and are rotatably connected to the receiving groove via the hinges. Two insertion slots are provided on the inner sides of both sides of the inverted triangle movable frame. The two insertion slots are located on both sides of the X-shaped frame, and the sound-absorbing cotton and sound insulation board are respectively movably installed in the insertion slots.

[0011] Furthermore, the protective plate has waist-shaped mounting holes at its four corners, and the sound insulation and noise reduction substrate has threaded holes corresponding to the mounting holes. The protective plate is fixedly mounted on the sound insulation and noise reduction substrate by bolts.

[0012] Furthermore, one end of the sound insulation and noise reduction substrate is provided with a mounting base, which is used to fix the substrate to both sides of the bridge. The other end of the sound insulation and noise reduction substrate, corresponding to the mounting base, is provided with an inclined surface. Two L-shaped limit frames are symmetrically fixed on the inclined surface, and a promotional sign is inserted between the two L-shaped limit frames.

[0013] Furthermore, the advertising sign is provided with limit bars at both ends, and a storage groove is provided on the inclined surface. The limit bars are rotatably disposed in the storage groove via a connecting shaft, and a torsion spring is provided between the connecting shaft and the limit bars.

[0014] As can be seen from the above technical solution, the beneficial effects of this utility model are as follows: This utility model provides a sound insulation and noise reduction device for rail transit bridges, comprising: a sound insulation and noise reduction base plate: a receiving groove is provided on the inner side wall of the sound insulation and noise reduction base plate; a movable frame: the movable frame is rotatably connected to the inside of the receiving groove via bearings, and an X-shaped bracket is fixedly provided in the middle of the movable frame; sound-absorbing cotton and sound-insulating board: the sound-absorbing cotton and sound-insulating board are respectively disposed inside the movable frame, and the sound-absorbing cotton and sound-insulating board are respectively disposed on both sides of the X-shaped bracket; a protective plate: the protective plate is disposed on the sound insulation and noise reduction base plate, and the protective plate covers the receiving groove. This device can reduce noise in two ways through the sound-absorbing cotton and sound-insulating board, thereby improving the sound insulation and noise reduction effect. By removing the receiving groove from the sound insulation and noise reduction base plate and rotating the movable frame out of the receiving groove around the hinge axis, the sound-absorbing cotton and sound-insulating board can be pulled out of the insertion slot for cleaning or replacement, making the operation convenient. Attached Figure Description

[0015] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0016] Figure 1A three-dimensional structural diagram of a sound insulation and noise reduction device for rail transit bridges provided by this utility model;

[0017] Figure 2 A schematic diagram of the sound insulation and noise reduction device for rail transit bridges when it is dispersed, as provided by this utility model;

[0018] Figure 3 for Figure 1 A magnified view of a portion of position A in the middle;

[0019] Figure label:

[0020] 1-Sound insulation and noise reduction base plate; 2-Protective plate; 3-Bolt; 4-Modible frame; 5-Sound absorbing cotton; 6-Sound insulation board; 7-L-shaped limit frame; 8-Advertisement board; 9-Limiting strip; 11-Receiving slot; 41-X-shaped bracket; 42-Insertion slot; 121-Storage slot; 12-Inclined surface. Detailed Implementation

[0021] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0022] Please see Figures 1-3 This utility model provides a sound insulation and noise reduction device for rail transit bridges, comprising,

[0023] Sound insulation and noise reduction substrate 1: A receiving groove 11 is provided on the inner side wall of the sound insulation and noise reduction substrate 1;

[0024] Movable frame 4: The movable frame 4 is rotatably connected to the inside of the receiving groove 11 via bearings. An X-shaped bracket 41 is fixedly installed in the middle of the movable frame 4. The movable frame 4 is configured as an inverted shape. Hinges are provided on both sides of the inverted movable frame 4 near the bottom edge. The hinges are rotatably connected to the receiving groove 11. Two insertion slots 42 are provided on the inner side of both sides of the inverted movable frame 4. The two insertion slots 42 are located on both sides of the X-shaped frame. The sound-absorbing cotton 5 and the sound insulation board 6 are respectively movably installed in the insertion slots 42.

[0025] Sound-absorbing cotton 5 and sound-insulating board 6: The sound-absorbing cotton 5 and sound-insulating board 6 are respectively arranged inside the movable frame 4, and are respectively arranged on both sides of the X-shaped bracket 41; the sound-absorbing cotton 5 is inserted in the movable frame 4 on the front side of the X-shaped bracket 41, and the sound-insulating board 6 is inserted in the movable frame 4 on the rear side of the X-shaped bracket 41. Insertion slots 42 are opened on both the front and rear movable frames 4 of the X-shaped bracket 41. The sound-absorbing cotton 5 and the sound-insulating board 6 are respectively inserted into the two insertion slots 42 from the side away from the hinge axis. The protective plate 2 is fixed to the inner wall of the sound insulation and noise reduction base plate 1 outside the receiving slot 11 by bolts 3. The sound-absorbing cotton 5 and the sound-insulating board 6 can reduce noise in two ways, improving the sound insulation and noise reduction effect. By removing the protective plate 2 from the sound insulation and noise reduction base plate 1 and rotating the movable frame 4 around the hinge axis out of the receiving slot 11, the sound insulation and noise reduction effect can be improved. The sound-absorbing cotton 5 and the sound-insulating board 6 can be easily removed from the insertion slot 42 for cleaning or replacement. The four corners of the protective board 2 are fixed to the sound insulation and noise reduction base plate 1 by bolts 3. The protective board 2 has evenly spaced strip holes. When in use, the sound insulation and noise reduction device is installed and fixed on both sides of the rail transit bridge. The sound-absorbing cotton 5 and the sound-insulating board 6 can reduce the noise generated by the vehicles passing on the bridge in a double manner, reducing the impact of noise on the living environment of the surrounding residents. When it is necessary to clean or replace the sound-absorbing cotton 5 and the sound-insulating board 6, the bolts 3 can be unscrewed, the protective board 2 can be removed from the sound insulation and noise reduction base plate 1, and then the movable frame 4 can be manually rotated out of the receiving slot 11 around the hinge shaft. The sound-absorbing cotton 5 and the sound-insulating board 6 can then be removed from the insertion slot 42 for cleaning or replacement to ensure the sound insulation and noise reduction effect of the sound insulation and noise reduction device.

[0026] Protective plate 2: The protective plate 2 is set on the sound insulation and noise reduction base plate 1. The protective plate 2 covers the receiving groove 11. The four corners of the protective plate 2 are provided with waist-shaped mounting holes. The sound insulation and noise reduction base plate 1 is provided with threaded holes corresponding to the mounting holes. The protective plate 2 is fixedly installed on the sound insulation and noise reduction base plate 1 by bolts 3.

[0027] As a further improvement to the above technical solution, one end of the sound insulation and noise reduction substrate 1 is provided with a mounting base, which is fixedly installed on both sides of the bridge. The other end of the sound insulation and noise reduction substrate 1, corresponding to the mounting base, is provided with an inclined surface 12. Two L-shaped limiting brackets 7 are symmetrically fixed on the inclined surface 12. A promotional sign 8 is inserted between the two L-shaped limiting brackets 7. Limiting strips are provided at both ends of the promotional sign 8. A storage groove 121 is provided on the inclined surface 12. The limiting strips are rotatably set in the storage groove 121 through a connecting shaft. A torsion spring is provided between the connecting shaft and the limiting strips. An inclined surface 12 is provided on the inner wall of the sound insulation and noise reduction base plate 1 above the receiving groove 11. An L-shaped limiting frame 7 is symmetrically fixedly connected to the inclined surface 12. A promotional sign 8 is movably inserted between the two L-shaped limiting frames 7. The length of the promotional sign 8 is the same as the length of the L-shaped limiting frame 7. Limiting strips 9 are symmetrically and movably provided on the sound insulation and noise reduction base plate 1 on both sides of the promotional sign 8. The L-shaped limiting frames 7 and the limiting strips 9 can limit the movement of the promotional sign 8, enabling the device to have a certain promotional function and enhancing its practicality. A storage groove 121 is symmetrically opened on the inclined surface 12. The upper end of the limiting strip 9 is rotatably connected to the storage groove 121 via a connecting shaft. The length of the limiting strip 9 is less than the length of the storage groove 121. When personnel pass through the bridge... When people pass by, the advertising sign 8 can be used to promote the message. When installing the advertising sign 8, the limiting strip 9 on either side can be moved backward around the connecting shaft into the storage slot 121. One end of the advertising sign 8 can then be inserted between the two L-shaped limiting frames 7 from that side until the advertising sign 8 abuts against the limiting strip 9 on the other side. At this time, the lower end of the limiting strip 9 on that side can rotate out of the storage slot 121 around the connecting shaft under its own weight. At this time, the limiting strips 9 on both sides, which are vertical under the action of gravity, can limit the two sides of the advertising sign 8 respectively, effectively preventing the advertising sign 8 from sliding out of the L-shaped limiting frame 7. This completes the quick installation of the advertising sign 8, enabling the device to have the function of advertising.

[0028] In use, the device is installed on the side of the bridge using a mounting base. Preferably, the noise reduction device is installed symmetrically on both sides of the bridge, and multiple noise reduction devices are installed sequentially along the length of the bridge.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.

Claims

1. A sound insulation and noise reduction device for rail transit bridges, characterized in that: The utility model relates to a sound insulation and noise reduction base plate (1) is provided with containing groove (11) on the inner side wall of the sound insulation and noise reduction base plate (1); The movable frame (4) is rotatably connected in the containing groove (11) through a bearing, and an X-shaped support (41) is fixedly arranged in the middle of the movable frame (4); The sound-absorbing cotton (5) and the sound insulation board (6) are arranged in the movable frame (4) respectively, and the sound-absorbing cotton (5) and the sound insulation board (6) are arranged on both sides of the X-shaped support (41) respectively; The protective plate (2) is arranged on the sound insulation and noise reduction base plate (1), and the protective plate (2) covers the containing groove (11). The movable frame (4) is arranged in a shape of, and the movable frame (4) is rotatably connected in the containing groove (11) through a hinge shaft arranged on both sides of the movable frame (4) close to the bottom edge, and two insertion grooves (42) are arranged on the inner sides of both sides of the movable frame (4), the two insertion grooves (42) are arranged on both sides of the X-shaped frame, and the sound-absorbing cotton (5) and the sound insulation board (6) are movably arranged in the insertion grooves (42) respectively.

2. The sound insulation and noise reduction device for rail transit bridge according to claim 1, characterized in that: The protective plate (2) is arranged on the sound insulation and noise reduction base plate (1), and the protective plate (2) covers the containing groove (11).

3. The sound insulation and noise reduction device for rail transit bridge according to claim 1, characterized in that: One end of the sound insulation and noise reduction base plate (1) is provided with a mounting base, and the sound insulation and noise reduction base plate (1) is fixedly mounted on both sides of the bridge through the mounting base, the other end of the sound insulation and noise reduction base plate (1) is provided with an inclined surface (12) corresponding to the mounting base, two L-shaped limiting frames (7) are symmetrically and fixedly arranged on the inclined surface (12), and a propaganda board (8) is inserted between the two L-shaped limiting frames (7).

4. The sound insulation and noise reduction device for rail transit bridge according to claim 1, characterized in that: The two ends of the propaganda board (8) are provided with limiting strips, the inclined surface (12) is provided with a receiving groove (121), the limiting strips are rotatably arranged in the receiving groove (121) through a connecting shaft, and a torsional spring is arranged between the connecting shaft and the limiting strips.

5. The sound insulation and noise reduction device for rail transit bridge according to claim 4, characterized in that: ​

Images