Hole opening noise reduction device for tunnel blasting construction

Abstract

The utility model provides a hole opening noise reduction device for tunnel blasting construction, and relates to the technical field of sound insulation devices. The upper part of the channel can be temporarily and permanently sealed through the sealing piece, and the sonic boom generated by explosion is filtered, so that the harm of the sonic boom to the body of a constructor is avoided; a sound insulation door curtain assembly used for opening and closing the lower portion of the channel is arranged on the main mounting frame and can be opened towards the two sides, and the opening area of the channel is increased as much as possible; the sound insulation door curtain assembly prevents dust from entering a non-excavation area, and the air quality of the tunnel is guaranteed; shock waves generated by explosion are subjected to silencing treatment; the air quality of the space in the excavated tunnel is guaranteed, and the influence of decibel on the body health of constructors is reduced; and a sealing assembly is arranged between the supporting frame formed by splicing the main mounting frame and the auxiliary mounting frame and the inner wall of the tunnel, sound is prevented from being transmitted out between the supporting frame structure and the wall of the excavated tunnel, and the sound insulation and noise reduction capacity of the equipment during tunnel excavation is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sound insulation devices, in particular to a hole opening noise reduction device for tunnel blasting construction. Background Art

[0002] The tunnel construction process is often accompanied by various noise emissions. Among them, the tunnel blasting construction noise is relatively large, and the shock wave has a great disturbance to the surrounding area. After the blasting, a large amount of dust is discharged from the tunnel, which directly affects the lives of surrounding residents. It is particularly important to do a good job in tunnel construction sound insulation and dust reduction. At present, the tunnel blasting noise reduction is mainly to set up protective racks at the entrance, and hang insulation cotton on the protective racks or build an integral closed shed at the tunnel entrance; as a result, the above structure needs to be manually set before each blasting construction, and needs to be dismantled in time after the blasting to avoid affecting the construction traffic, which is time-consuming and laborious; and the above structure has not been optimized for the contour of the tunnel, and no protection measures have been taken for the gantry gaps around the tunnel, resulting in limited noise reduction effect. Utility Model Content

[0003] The utility model aims to provide a tunnel opening noise reduction device for tunnel blasting construction, which can solve the problems raised by the above-mentioned background technology in view of the shortcomings of the prior art.

[0004] The technical solution of the utility model is achieved in this way:

[0005] The utility model provides a tunnel opening noise reduction device for blasting construction, comprising a main mounting frame and a sub-mounting frame, wherein the sub-mounting frame is mounted on the top of the main mounting frame and is adapted to the tunnel excavation surface, channels are arranged inside the main mounting frame and the sub-mounting frame, a closing piece for closing the upper part of the channel is arranged on the sub-mounting frame, a sound insulation door curtain assembly for opening and closing the lower part of the channel is arranged on the main mounting frame, and a sealing assembly is arranged between a support frame formed by splicing the main mounting frame and the sub-mounting frame and the inner wall of the tunnel.

[0006] In some technical schemes of the utility model, the soundproof door curtain assembly includes two groups of door curtains that are rotatably arranged on the main mounting frame respectively, and the door curtain includes two mounting frames arranged in pairs, and multiple frames are arranged between the mounting frames, and the second soundproof board is arranged on each of the mounting frames; and the first soundproof board is arranged on each of the multiple frames.

[0007] In some technical solutions of the present utility model, a plurality of racks are obliquely arranged between two installation frames.

[0008] In some technical solutions of the present utility model, sound insulation material is filled between any two adjacent first sound insulation boards.

[0009] In some technical solutions of the utility model, the sealing component includes a plurality of annular airbags arranged around a support frame, and the support frame is provided with an inflation device connected to the plurality of annular airbags.

[0010] In some technical solutions of the utility model, a plurality of silencer sheets are provided in the annular airbag along its circumference, and the silencer sheets are obliquely arranged in the annular airbag.

[0011] In some technical solutions of the utility model, driving motors are provided on both sides of the main mounting frame, driven gears are installed on the tops of the two door curtains, and driving gears are provided on the output ends of the driving motors; the driven gears and the driving gears on the same side mesh with each other.

[0012] Compared with the prior art, the embodiments of the present invention have at least the following advantages or beneficial effects:

[0013] The upper part of the passage can be temporarily and permanently sealed by the closure, and the sonic boom generated by the explosion can be filtered to prevent the sonic boom from causing harm to the construction workers. The main mounting frame is provided with a soundproof door curtain assembly for opening and closing the lower part of the passage. The soundproof door curtain assembly can be opened to both sides to increase the opening area of ​​the passage as much as possible. Passers-by and large excavation equipment enter and exit the excavation area through the soundproof door curtain assembly. The soundproof door curtain assembly prevents dust from entering the non-excavation area to ensure the air quality of the tunnel. The shock wave generated by the explosion can also be silenced to prevent the above factors from affecting the health of the construction workers. The air quality of the space in the excavated tunnel is ensured and the decibels that affect the health of the construction workers are reduced. A closed assembly is provided between the support frame formed by splicing the main mounting frame and the auxiliary mounting frame and the inner wall of the tunnel to prevent the sound from being transmitted between the support frame structure and the wall of the excavated tunnel, thereby improving the sound insulation and noise reduction capabilities of the equipment during tunnel excavation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0016] Figure 2 This is a front view structural schematic diagram of the utility model;

[0017] Figure 3 This is a schematic diagram of the internal structure of the door curtain in the utility model;

[0018] Figure 4 It is a schematic cross-sectional structure diagram of the annular airbag in the utility model.

[0019] Icons: 1. Door curtain; 2. Auxiliary mounting frame; 3. Annular airbag; 4. Main mounting frame; 5. Slide rail; 6. Driving motor; 7. Driven gear; 8. Second sound insulation board; 9. Mounting frame; 10. Frame; 11. First sound insulation board; 12. Silencer; 13. Vent. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] Example 1

[0023] Please refer to Figure 1-Figure 4 shown.

[0024] The utility model provides a tunnel opening noise reduction device for tunnel blasting construction, such as Figure 1 , Figure 2As shown, it includes a main mounting frame 4, a sub-mounting frame 2, a closure, a soundproof door curtain assembly and a sealing assembly; the main mounting frame 4 is provided with a rectangular frame structure, and the two sides of the main mounting frame 4 are arc-shaped and compatible with the side walls of the tunnel, which is mainly formed in one piece by welding steel and connecting with bolts; the top of the sub-mounting frame 2 is provided with an inferior arc shape and is compatible with the top of the arc surface of the excavated tunnel. The main mounting frame 4 and the sub-mounting frame 2 in the above structure are spliced ​​with each other to form a support frame structure with a high degree of adaptability to the tunnel excavation section; and the support frame structure is provided with a plurality of slide rails 5 installed at the bottom of the main mounting frame 4 and two slide rails 5 installed on the ground of the excavated tunnel, so that the above structure can move in the tunnel along the excavation direction of the excavated tunnel without frequent disassembly and assembly; improve construction efficiency, and provide a visual isolation area for the section that needs to be blasted; a passage is provided in the main mounting frame 4 and the sub-mounting frame 2, and the passage is used for passing personnel and large excavation equipment to enter and exit the excavation area. The sub-mounting frame 2 is provided with a closure for closing the upper part of the passage, and the closure is provided The whole is composed of a steel frame and a soundproof board, and the equipment for ventilation in the channel is also installed on the auxiliary mounting frame 2; the upper part of the channel can be temporarily and permanently sealed by the closure, and the sonic boom generated by the explosion can be filtered to prevent the sonic boom from causing harm to the bodies of construction workers; a soundproof door curtain assembly for opening and closing the lower part of the channel is provided on the main mounting frame 4, and the soundproof door curtain assembly can be opened to both sides to increase the opening area of ​​the channel as much as possible, and passers-by and large excavation equipment enter and exit the excavation area through the soundproof door curtain assembly; the soundproof door curtain assembly prevents dust from entering the non-excavation area to ensure the air quality of the tunnel; the shock wave generated by the explosion can also be silenced to prevent the above factors from affecting the health of construction workers; the air quality of the space in the excavated tunnel is ensured and the decibels that affect the health of construction workers are reduced; a closed assembly is provided between the support frame formed by the jointing of the main mounting frame 4 and the auxiliary mounting frame 2 and the inner wall of the tunnel to prevent the sound from being transmitted between the support frame structure and the wall of the excavated tunnel, thereby improving the sound insulation and noise reduction capability of the equipment during tunnel excavation.

[0025] In some technical solutions of the utility model, the soundproof door curtain assembly includes two groups of door curtains 1 that are rotatably arranged on both sides of the main mounting frame 4, and the door curtains 1 are installed on the side walls of the main mounting frame 4 through door hinges. Each door curtain 1 includes two mounting frames 9 arranged in pairs, and the two mounting frames 9 are connected as a whole by bolts through multiple frames 10. The second soundproof board 8 is fixed to the mounting frames 9 by riveting; and the first soundproof board 11 is fixed to the multiple frames 10 by screws. In this way, the interior of the door curtain 1 can be divided into multiple soundproof spaces. When the sonic boom generated by the explosion is transmitted to the above structure in the tunnel, the sound is transmitted to each soundproof space, thereby achieving the purpose of weakening the sound, and gradually weakening the sound to a suitable state, thereby ensuring the sound insulation and noise reduction ability of the equipment during tunnel excavation.

[0026] The two door curtains 1 are provided to maintain the integrity of the sound insulation door curtain assembly, ensure the air tightness of the door curtain 1, and thus ensure the sound insulation and noise reduction capability of the door curtain 1.

[0027] Preferably, there are two groups of soundproof door curtain assemblies, which are arranged at two ends of the main mounting frame 4 that are opposite to each other. When the sonic boom generated by the explosion is transmitted to the two groups of soundproof door curtain assemblies in the tunnel, the sound will be weakened by each soundproof space and will gradually reach a suitable state, thereby ensuring the sound insulation and noise reduction capabilities of the equipment during tunnel excavation.

[0028] In some technical solutions of the present invention, multiple frames 10 are tilted between two mounting frames 9. The tilted frames 10 can increase the noise reduction area of ​​the first sound insulation board 11, reduce the sound in a large range, and thus improve the noise reduction effect.

[0029] In some technical solutions of the present invention, sound insulation materials are filled between any two adjacent first sound insulation boards 11, which can increase the noise reduction area of ​​the sound, that is, the noise reduction effect, and reduce the sound in a large range, thereby improving the noise reduction effect.

[0030] Preferably, the first sound insulation board 11, the second sound insulation board 8 and the sound insulation material are all made of materials with good sound insulation effect, such as one or more materials selected from the group consisting of sound insulation felt, sound insulation board, sound insulation cotton, microporous polyurethane foam, etc. The first sound insulation board 11, the second sound insulation board 8 and the sound insulation material can be made of the same material.

[0031] In some technical solutions of the utility model, the sealing component includes a plurality of annular airbags 3 arranged around a support frame, and the support frame is provided with an inflating device connected with the plurality of annular airbags 3. The annular airbags 3 are spliced ​​by multiple sections of the airbags, and the multiple sections of the airbags are connected in sequence through pipes, and the airbags have the ability to extend in the horizontal direction or in the vertical direction; then they are assembled and installed on the outer layer of the support frame, and at least three annular airbags 3 are arranged on the outer layer of the support frame, so as to improve the sealing ability of the structure between the support frame structure and the inner wall of the tunnel, and prevent dust and sound from penetrating from the above-mentioned gaps, which will affect the sealing and sound insulation ability of the device.

[0032] In some technical solutions of the utility model, a plurality of silencer sheets 12 are arranged along the circumference of the annular airbag 3, and the silencer sheets 12 are arranged obliquely in the annular airbag 3. The silencer area formed by the silencer sheets 12 in the annular airbag 3 can increase the noise reduction area of ​​the annular airbag 3 for sound, that is, the noise reduction effect, and reduce the sound in a large range, thereby improving the noise reduction effect. The silencer sheets 12 are provided with a plurality of vents 13. When the inflating device injects gas into the annular airbag 3, the gas flows in the annular airbag 3 through the vents 13, and the vents 13 provided can also serve as silencer holes. When the annular airbag 3 expands, the silencer sheets are pulled, so that the vents 13 on the silencer sheets are deformed and twisted, thereby increasing the path for the sound to flow in the vents 13 and improving the silencer effect. The silencer sheets are also made of rubber, and the silencer sheets are curled in the annular airbag.

[0033] In some technical solutions of the utility model, driving motors 6 are provided on both sides of the main mounting frame 4 through the mounting base, driven gears 7 are installed on the tops of the two door curtains 1, and driving gears are provided on the output ends of the driving motors 6; the driven gears 7 and the driving gears on the same side mesh with each other. The driving motors 6 can quickly drive the door curtains 1 to open and close under the operation of the operator, thereby improving the opening and closing efficiency, eliminating the need for the operator to perform more operations, and saving labor costs.

[0034] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A tunnel opening noise reduction device for tunnel blasting construction, characterized in that: It includes a main mounting frame and a sub-mounting frame. The sub-mounting frame is installed on the top of the main mounting frame and is adapted to the tunnel excavation surface. Passages are arranged in the main mounting frame and the sub-mounting frame. A closing piece for closing the upper part of the channel is arranged on the sub-mounting frame. A soundproof door curtain assembly for opening and closing the lower part of the channel is arranged on the main mounting frame. A sealing assembly is arranged between the support frame structure formed by splicing the main mounting frame and the sub-mounting frame and the inner wall of the tunnel.

2. A tunnel opening noise reduction device for tunnel blasting construction according to claim 1, characterized in that: The soundproof door curtain assembly includes two groups of door curtains that are rotatably mounted on a main mounting frame, and the door curtain includes two mounting frames that are arranged in pairs. A plurality of frames are arranged between the mounting frames, and a second soundproof board is arranged on each of the mounting frames; and a plurality of the frames are arranged on each of the first soundproof boards.

3. A tunnel opening noise reduction device for tunnel blasting construction according to claim 2, characterized in that: The plurality of racks are all tiltedly arranged between the two installation frames.

4. A tunnel opening noise reduction device for tunnel blasting construction according to claim 2 or 3, characterized in that: Any two adjacent first sound insulation boards are filled with sound insulation material.

5. The tunnel opening noise reduction device for tunnel blasting construction according to claim 1, characterized in that: The sealing component includes a plurality of annular air bags arranged around the support frame, and the support frame is provided with an inflation device connected with the plurality of annular air bags.

6. A tunnel opening noise reduction device for tunnel blasting construction according to claim 5, characterized in that: A plurality of silencer sheets are arranged in the annular airbag along its circumference, and the silencer sheets are arranged obliquely in the annular airbag.

7. The tunnel opening noise reduction device for tunnel blasting construction according to claim 2, characterized in that: Driving motors are arranged on both sides of the main mounting frame, driven gears are arranged on the tops of the two door curtains, and driving gears are arranged on the output ends of the driving motors; the driven gears and the driving gears on the same side mesh with each other.

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