Noise reduction device for urban overpass

Abstract

The utility model discloses an urban overpass noise reduction device, which belongs to the technical field of bridge noise reduction, and comprises two I-beams, a sound insulation plate is arranged between the two I-beams, two groups of L-shaped irons are fixedly connected outside the two I-beams, and two groups of shells are fixedly connected outside the sound insulation plate. The I-shaped steel is fixedly installed on the concrete wall of the flyover, the L-shaped iron is arranged on the I-shaped steel, the shells are arranged on the sound insulation board, when the sound insulation board needs to be replaced, the nut is screwed off, the rod body is pulled out, then the sound insulation board can be lifted upwards, the shells are taken down from the L-shaped iron, and the sound insulation board can be replaced. And after a new sound insulation plate is replaced, the shell of the new sound insulation plate is inserted into the L-shaped iron again, the rod body is inserted into the first fixing block and the second fixing block, and the nuts are screwed to complete fixation, so that the sound insulation plate can be rapidly replaced, the construction efficiency of replacing the noise reduction device is improved, and the influence on road traffic is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge noise reduction, in particular to a noise reduction device for a city overpass. Background Art

[0002] Traffic congestion is a common problem in cities, and there are strict conditions for building subways. Therefore, building an overpass on the basis of the original road has become a quick solution to traffic congestion. An overpass is a bridge built across another road at the intersection of cross roads. The main purpose is to ensure that traffic at the intersection is not affected, and there is no need to be disturbed by traffic jams caused by stopping at traffic lights. Overpasses are built in many places in the city. There are buildings on both sides of the overpasses in the urban area. In order to reduce the noise caused by cars driving on the overpasses and affect people in surrounding buildings, multiple sound insulation panels are usually installed on the overpasses for noise reduction.

[0003] At present, most of the noise reduction devices on overpasses are integrated and fixed to the fixed steel bars on the concrete piers on the overpasses through multiple fasteners or direct welding; however, the noise reduction effect of such noise reduction devices will gradually decrease after long-term use and aging, or when they are damaged, they need to be replaced. The installation method with multiple fasteners will slow down the construction efficiency and affect road traffic. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art.

[0005] To this end, one purpose of the utility model is to propose a noise reduction device for an urban overpass, which can quickly replace the sound insulation board, thereby improving the construction efficiency of replacing the noise reduction device and reducing the impact on road traffic.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a noise reduction device for an urban overpass, comprising two I-beams, a sound insulation board is arranged between the two I-beams, two groups of L-shaped irons are fixedly connected to the outside of the two I-beams, two groups of shells are fixedly connected to the outside of the sound insulation board, slots are provided inside the two groups of shells, and the two groups of shells are respectively plugged into the outside of the L-shaped iron, the outside of the two I-beams is fixedly connected to a first fixed block, the bottom of the sound insulation board is fixedly connected to a second fixed block, and the first fixed block and the second fixed block are internally plugged with a rod body.

[0007] Preferably, the number of the shells in each group is four, and the number of the L-shaped irons is equal to the number of the shells.

[0008] Preferably, a first solid plate is arranged inside the sound insulation board, and a second sound-absorbing cotton layer is also arranged inside the sound insulation board.

[0009] Preferably, a second solid plate is bonded to the outside of the I-beam.

[0010] Preferably, the external thread of the rod body is connected with a nut.

[0011] Preferably, a first sound-absorbing cotton layer is bonded inside the I-beam.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The utility model fixes an I-beam on a concrete wall of an overpass, an L-shaped iron is arranged on the I-beam, and a shell is arranged on a sound insulation board. When the sound insulation board needs to be replaced, the nut is screwed off to pull out the rod body, and then the sound insulation board can be lifted upward, and the shell is removed from the L-shaped iron. After a new sound insulation board is replaced, the shell of the new sound insulation board is reinserted on the L-shaped iron, and the rod body is inserted into a first fixing block and a second fixing block and fixed with a nut. The sound insulation board can be quickly replaced, thereby improving the construction efficiency of replacing the noise reduction device and reducing the impact on road traffic. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the noise reduction device for urban overpass of the utility model;

[0015] Figure 2 It is a schematic cross-sectional structure diagram of a sound insulation board in the noise reduction device for an urban overpass of the utility model;

[0016] Figure 3 It is a structural schematic diagram of the second solid plate in the urban overpass noise reduction device of the utility model;

[0017] Figure 4 It is a schematic structural diagram of a shell in the urban overpass noise reduction device of the utility model.

[0018] In the figure: 1. I-beam; 2. L-shaped iron; 3. shell; 4. first fixing block; 5. rod body; 6. second fixing block; 7. nut; 8. first sound-absorbing cotton layer; 9. sound insulation board; 10. second sound-absorbing cotton layer; 11. first solid plate; 12. second solid plate; 13. slot. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-Figure 4The embodiment of the utility model provides a noise reduction device for an urban overpass, comprising: two I-beams 1, and a sound insulation board 9 is arranged between the two I-beams 1.

[0021] Among them, the outside of the two I-beams 1 are fixedly connected with two groups of L-shaped irons 2, the outside of the sound insulation board 9 is fixedly connected with two groups of shells 3, the inside of the two groups of shells 3 are provided with slots 13, and the two groups of shells 3 are respectively inserted into the outside of the L-shaped iron 2, the outside of the two I-beams 1 is fixedly connected with a first fixed block 4, the bottom of the sound insulation board 9 is fixedly connected with a second fixed block 6, the inside of the first fixed block 4 and the second fixed block 6 are inserted with a rod body 5, and the outside of the rod body 5 is threadedly connected with a nut 7.

[0022] When in use, the I-beam 1 is fixedly installed on the concrete wall of the overpass. When the sound insulation board 9 needs to be replaced, the nut 7 is unscrewed to pull out the rod body 5, and then the sound insulation board 9 can be lifted up, and the shell 3 is removed from the L-shaped iron 2. After replacing the new sound insulation board 9, the shell 3 of the new sound insulation board 9 is reinserted into the L-shaped iron 2, and the rod body 5 is inserted into the first fixing block 4 and the second fixing block 6 and screwed on with the nut 7 to complete the fixation.

[0023] In order to enhance the sound insulation effect of the sound insulation board 9 , a first solid board 11 is arranged inside the sound insulation board 9 , and a second sound absorbing cotton layer 10 is also arranged inside the sound insulation board 9 .

[0024] In order to form a sound-absorbing space with the sound insulation board 9 , a second solid plate 12 is bonded to the outside of the I-beam 1 .

[0025] In order to reduce the noise generated by the I-beam 1 , a first sound-absorbing cotton layer 8 is bonded inside the I-beam 1 .

[0026] According to the above technical scheme, the working steps of this scheme are summarized and sorted out: when the utility model is in use, the I-beam 1 is fixedly installed on the concrete wall of the overpass. When the sound insulation board 9 needs to be replaced, the nut 7 is unscrewed to pull out the rod body 5, and then the sound insulation board 9 can be lifted up, and the shell 3 is removed from the L-shaped iron 2. After the new sound insulation board 9 is replaced, the shell 3 of the new sound insulation board 9 is reinserted into the L-shaped iron 2, and the rod body 5 is inserted into the first fixing block 4 and the second fixing block 6 and screwed on with the nut 7 to complete the fixation. The second solid plate 12 and the sound insulation board 9 form a sound-absorbing space, which can further reduce the transmission of noise.

[0027] Parts not involved in the present invention are the same as the prior art or can be implemented by the prior art. Although the embodiments of the present invention have been shown and described, it is understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A noise reduction device for an urban overpass, comprising two I-beams (1), a sound insulation board (9) being arranged between the two I-beams (1), Features: The exteriors of the two I-beams (1) are fixedly connected to two groups of L-shaped irons (2); the exteriors of the sound insulation board (9) are fixedly connected to two groups of shells (3); the interiors of the two groups of shells (3) are provided with slots (13); the two groups of shells (3) are respectively plugged into the exteriors of the L-shaped irons (2); the exteriors of the two I-beams (1) are fixedly connected to a first fixing block (4); the bottom of the sound insulation board (9) is fixedly connected to a second fixing block (6); and the interiors of the first fixing block (4) and the second fixing block (6) are plugged with rod bodies (5).

2. A noise reduction device for an urban overpass according to claim 1, Features: The number of the shells (3) in each group is four, and the number of the L-shaped irons (2) is equal to the number of the shells (3).

3. The urban overpass noise reduction device according to claim 1, Features: A first solid plate (11) is arranged inside the sound insulation board (9), and a second sound-absorbing cotton layer (10) is also arranged inside the sound insulation board (9).

4. The urban overpass noise reduction device according to claim 1, Features: A second solid plate (12) is bonded to the outside of the I-beam (1).

5. The urban overpass noise reduction device according to claim 1, Features: The external thread of the rod body (5) is connected with a nut (7).

6. The urban overpass noise reduction device according to claim 1, Features: A first sound-absorbing cotton layer (8) is bonded inside the I-beam (1).

Images