Tunnel multi-angle dust falling device

Abstract

The utility model belongs to the technical field of tunnel construction, and particularly relates to a tunnel multi-angle dust falling device which comprises an arch frame and a plurality of water supply pipes, each water supply pipe comprises a water supply hose section and a water supply hard pipe section, and the water supply hard pipe sections are rotatably installed on the arch frame and coaxially and fixedly connected with a driving chain wheel. The end, away from the water supply hose section, of the water supply hard pipe section is fixedly connected with a disc, an atomization nozzle is eccentrically and fixedly installed on the disc, a water storage cavity is formed in the disc, and the water supply hard pipe section and the atomization nozzle both communicate with the water storage cavity. A chain is arranged on the arch frame and meshed with the driving chain wheels on the water supply hard pipe sections, and the two ends of the chain are connected with the two ends of the arch frame through elastic pieces respectively. The angle of the atomizing spray head can be adjusted, so that the water curtain range is enlarged, the dust falling range is enlarged, and the problem that the dust falling range is limited due to the fact that the angle of the atomizing spray head of an existing water curtain dust falling device cannot be adjusted is effectively solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of tunnel construction, and particularly relates to a multi-angle dust reduction device for tunnels. Background Art

[0002] A large amount of dust will be generated during the tunnel construction process. For example, tunnel face blasting, tunnel inner wall drilling and other constructions will generate a lot of dust. The dust will endanger the respiratory system of the construction workers in the tunnel and harm the physical health of the construction workers. In addition, the dust enters the oil fluid and moving parts of the mechanical equipment, accelerating the wear of the moving parts and shortening the service life of the equipment. Therefore, a water curtain dust collector is usually used in the tunnel to clean the dust in the tunnel.

[0003] In the existing water curtain dust collector, the water in the water tank is usually sprayed out through a high-pressure water pump via an atomizing nozzle to form a water curtain. The water molecules adhere to the surface of the dust and fall under the action of gravity with the dust, achieving a certain dust reduction effect. However, for the existing water curtain dust collector, its atomizing nozzle is fixedly installed and the angle cannot be adjusted. Therefore, the water curtain formed by the atomizing nozzle is limited, and there is a problem of limited dust reduction range. Summary of the Utility Model

[0004] The utility model aims to provide a multi-angle dust reduction device for tunnels to solve the problem of limited dust reduction range caused by the non-adjustable angle of the atomizing nozzle of the existing water curtain dust collector.

[0005] To achieve the above purpose, the solution of the utility model is: a multi-angle dust reduction device for tunnels, including an arch frame and a plurality of water supply pipes. The water supply pipes include a water supply hose section and a water supply hard pipe section. The water supply hard pipe section is rotatably installed on the arch frame. A driving sprocket is coaxially and fixedly connected to the water supply hard pipe section. A disc is fixedly connected to one end of the water supply hard pipe section away from the water supply hose section. An atomizing nozzle is fixedly installed on the disc. The atomizing nozzle is eccentrically arranged. A water storage cavity is formed in the disc. The water supply hard pipe section and the atomizing nozzle are both communicated with the water storage cavity. A chain is arranged on the arch frame. The chain meshes with the driving sprockets on a plurality of water supply hard pipe sections. Both ends of the chain are connected to both ends of the arch frame through elastic members respectively.

[0006] The working principle and beneficial effects of this solution are as follows: In this solution, the elastic members are used to tension the chain and pull the chain to move. The chain is used to drive the driving sprocket to rotate, so as to realize the rotation of the water supply hard pipe section. In this way, the atomizing nozzle eccentrically arranged on the disc rotates along the central axis of the water supply hard pipe section, thereby adjusting the angle of the atomizing nozzle, increasing the water curtain range, and thus increasing the dust reduction range, effectively solving the problem of limited dust reduction range caused by the non-adjustable angle of the atomizing nozzle of the existing water curtain dust collector.

[0007] Optionally, an arched water supply pipe is fixedly installed on the arch frame, and one end of the water supply hose section far from the water supply hard pipe section is communicated with the arched water supply pipe.

[0008] In this solution, the water supply hose section is communicated with the arched water supply pipe. In this way, after the arched water supply pipe is externally connected to a water delivery pipe, water can be delivered to the water supply pipe, and there is no need to externally connect a water delivery pipe to each water supply pipe.

[0009] Optionally, a guide shaft is rotatably connected to the arch frame, and a guide sprocket meshing with the chain is coaxially and fixedly connected to the guide shaft.

[0010] In this solution, the chain is redirected by the guide wheel, so that both ends of the chain have vertical sections, ensuring that the chain fits the shape of the arch frame better.

[0011] Optionally, a driving assembly for driving the chain is provided on the arch frame. The driving assembly includes a driving motor for driving the guide shaft to rotate and a horizontal plate for installing the driving motor. The horizontal plate is fixedly connected to the arch frame.

[0012] In this solution, the driving motor is used to drive the guide shaft to rotate forward / backward reciprocally, thereby pulling / releasing the chain reciprocally. With the cooperation of the elastic member, the driving sprocket is driven to rotate forward / backward reciprocally, so as to realize the forward / backward reciprocating rotation of the water supply hard pipe section and the disc, and further realize the automatic adjustment of the angle of the atomizing nozzle.

[0013] Optionally, bottom plates are fixedly connected to both ends of the arch frame. A pulling member for pulling the chain is fixedly installed on the bottom plate. The pulling member is a cylinder, a hydraulic cylinder or an electric push rod. One end of an elastic member far from the chain is fixedly connected to the output end of the pulling member, and the other end of the elastic member far from the chain is fixedly connected to the bottom plate.

[0014] In this solution, the pulling member is used to pull / release the chain repeatedly. With the cooperation of the elastic member, the driving sprocket is driven to rotate forward / backward reciprocally, so as to realize the forward / backward reciprocating rotation of the water supply hard pipe section and the disc, and further realize the automatic adjustment of the angle of the atomizing nozzle.

[0015] Optionally, a plurality of rollers are fixedly installed on the bottom surface of the bottom plate.

[0016] In this solution, the arrangement of the rollers facilitates the movement of the arch frame, so as to change the position of the device in the tunnel.

[0017] Optionally, the chain is in an S shape after meshing with a plurality of driving sprockets.

[0018] In this solution, the chain is in an S shape after meshing with a plurality of driving sprockets. That is to say, among two adjacent driving sprockets, the chain meshes with one side of a driving sprocket and then meshes with the other side of the other driving sprocket. In this way, the chain will not easily disengage from the driving sprocket.

[0019] Optionally, the elastic member is an elastic rope or a telescopic spring.

[0020] In this solution, the elastic rope or the telescopic spring is a common elastic member, which has low cost and is easy to obtain. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 FIG. 1 is a schematic structural diagram of a tunnel multi-angle dust reduction device in Embodiment 1 of the present utility model;

[0022] Figure 2 is Figure 1 a schematic structural diagram after the disc and the atomizing nozzle in FIG. 1 are hidden;

[0023] Figure 3 is Figure 1 the right view of FIG. 1;

[0024] Figure 4 is Figure 1 a partial sectional view taken along the line A-A in FIG. 1;

[0025] Figure 5 FIG. 2 is a schematic structural diagram of a tunnel multi-angle dust reduction device in Embodiment 2 of the present utility model;

[0026] Figure 6 is Figure 5 a schematic structural diagram after the disc and the atomizing nozzle in FIG. 2 are hidden. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] The following is further detailed through specific embodiments:

[0028] The marks in the attached drawings of the specification include: arch frame 1, water supply pipe 2, water supply hose section 210, water supply hard pipe section 220, mounting plate 3, bearing 4, driving sprocket 5, disc 6, water storage cavity 601, atomizing nozzle 7, arched water supply pipe 8, water delivery pipe 9, chain 10, elastic member 11, bottom plate 12, roller 13, guiding shaft 14, guiding sprocket 15, driving motor 16, horizontal plate 17, pulling member 18.

[0029] Embodiment 1

[0030] This embodiment is basically as Figure 1 , Figure 2 and Figure 3 shown: A tunnel multi-angle dust reduction device includes an arch frame 1 and a plurality of water supply pipes 2, combined with Figure 4As shown, the water supply pipe 2 includes a water supply hose section 210 and a water supply rigid pipe section 220. The water supply rigid pipe section 220 is rotatably installed on the arch frame 1. Specifically, a mounting plate 3 is welded on the arch frame 1. A mounting hole is formed in the mounting plate 3, and a bearing 4 is welded in the mounting hole. The water supply rigid pipe section 220 is coaxially and fixedly connected in the bearing 4. The water supply rigid pipe section 220 is coaxially and fixedly connected with a driving sprocket 5. One end of the water supply rigid pipe section 220 away from the water supply hose section 210 is integrally formed with a disc 6. An atomizing nozzle 7 is fixedly installed on the disc 6, and the atomizing nozzle 7 is eccentrically arranged. A water storage cavity 601 is formed in the disc 6. The water supply rigid pipe section 220 and the atomizing nozzle 7 are both communicated with the water storage cavity 601. Combined with Figure 3 As shown, an arched water supply pipe 8 is installed on the arch frame 1 through bolts. One end of the arched water supply pipe 8 is closed, and the other end of the arched water supply pipe 8 is externally connected to a water delivery pipe 9. A water pump is provided on the water delivery pipe 9. One end of the water supply hose section 210 away from the water supply rigid pipe section 220 is communicated with the arched water supply pipe 8. In this embodiment, the number of the water supply pipes 2 is seven.

[0031] A chain 10 is provided on the arch frame 1. The chain 10 meshes with the driving sprockets 5 on several water supply rigid pipe sections 220. After the chain 10 meshes with several driving sprockets 5, it is in an S shape (that is, the chain 10 sequentially meshes with each driving sprocket 5 along the S-shaped path). Both ends of the chain 10 are connected to both ends of the arch frame 1 through elastic members 11. The elastic members 11 are elastic ropes or telescopic springs. Bottom plates 12 are welded to both ends of the arch frame 1. A plurality of rollers 13 are fixedly installed on the bottom surface of the bottom plates 12. In this embodiment, the number of rollers 13 under each bottom plate 12 is four, and the four rollers 13 are distributed at the four corners of the bottom plate 12. In addition, in this embodiment, the elastic member 11 is an elastic rope, and the end of the elastic rope away from the chain 10 is fixedly connected to the bottom plate 12.

[0032] A guide shaft 14 is rotatably connected to the arch frame 1. A guide sprocket 15 that meshes with the chain 10 is coaxially and fixedly connected to the guide shaft 14. A driving assembly for driving the chain 10 is provided on the arch frame 1. The driving assembly includes a driving motor 16 for driving the guide shaft 14 to rotate and a horizontal plate 17 for installing the driving motor 16. The horizontal plate 17 is welded to the arch frame 1.

[0033] During actual use, water flows from the water delivery pipe 9 into the arched water delivery pipe 8, then into each water supply pipe 2, and finally enters the water storage cavity 601 of the disc 6 and is sprayed out through the atomizing nozzle 7, thereby forming a water curtain in the tunnel and starting dust suppression. During the dust suppression process, the drive motor 16 is started. The drive motor 16 first drives the guide shaft 14 to rotate counterclockwise by a certain angle (for example, 90°). During this process, since the chain 10 meshes with the guide sprocket 15 on the guide shaft 14, the chain 10 will overcome the pulling force exerted on it by the right elastic member 11 and slide counterclockwise. Also, since the chain 10 meshes with each drive sprocket 5, the drive sprockets 5 will rotate driven by the chain 10 (some drive sprockets 5 rotate clockwise and some rotate counterclockwise), thereby driving the water supply rigid pipe section 220 and the disc 6 to rotate. The atomizing nozzle 7 eccentrically arranged on the disc 6 rotates along the central axis of the disc 6; then, the drive motor 16 drives the guide shaft 14 to rotate clockwise by a certain angle (for example, 180°). Similarly, the chain 10 will overcome the pulling force exerted on it by the left elastic member 11 under the pulling force of the right elastic member 11 and slide clockwise, and drive each drive sprocket 5 to rotate in the reverse direction ("reverse rotation" means that the drive sprockets 5 that rotated clockwise before now rotate counterclockwise, and the drive sprockets 5 that rotated counterclockwise before now rotate clockwise), thereby driving the water supply rigid pipe section 220 and the disc 6 to rotate in the reverse direction, and further causing the atomizing nozzle 7 eccentrically arranged on the disc 6 to rotate in the reverse direction along the central axis of the disc 6.

[0034] In this way, by driving the guide shaft 14 to rotate repeatedly counterclockwise / clockwise by the drive motor 16, the atomizing nozzle 7 rotates alternately clockwise / counterclockwise along the central axis of the disc 6, realizing the adjustment of the angle of the atomizing nozzle 7, and further realizing multi-angle spraying, increasing the range of the water curtain, and thus increasing the dust suppression range. In addition, since rollers 13 are provided under the bottom plate 12, when the construction worker pushes the arch 1, the rollers 13 under the bottom plate 12 roll and the arch 1 moves, so that the device moves in the tunnel.

[0035] To sum up, in this embodiment, with the cooperation of the drive motor 16 and the elastic member 11, the chain 10 is driven to slide by the guide shaft 14, and then the drive sprockets 5 are driven to rotate by the chain 10, thereby driving the water supply rigid pipe section 220, the disc 6 and the atomizing nozzle 7 to rotate, realizing the angle adjustment of the atomizing nozzle 7, that is, realizing multi-angle spraying of the atomizing nozzle 7, increasing the range of the water curtain, and thus increasing the dust suppression range.

[0036] Embodiment 2

[0037] The difference between this embodiment and Embodiment 1 is that as Figure 5 and Figure 6As shown, in this embodiment, the driving component in the first embodiment is not provided in the device of this embodiment. Instead, a pulling member 18 for pulling the chain 10 is provided. The pulling member 18 is fixedly installed on the bottom plate 12. The pulling member 18 is a cylinder, a hydraulic rod or an electric push rod. One end of the left elastic member 11 away from the chain 10 is fixedly connected to the output end of the pulling member 18. Specifically, the left elastic member 11 is wound and bound on the output end of the pulling member 18, and the left end of the chain 10 is close to the output end of the pulling member 18. One end of the right elastic member 11 away from the chain 10 is still fixedly connected to the right bottom plate 12. The pulling member 18 in this embodiment is selected as an electric push rod.

[0038] In this embodiment, the pulling member 18 pulls the left end of the chain 10 downward, and the chain 10 slides counterclockwise against the pulling force of the right elastic member 11, thereby driving the driving sprocket 5 to rotate, and further driving the water supply hard pipe section 220, the disc 6 and the atomizing nozzle 7 to rotate. Then, the output end of the pulling member 18 moves upward, releasing the left end of the chain 10. The chain 10 slides clockwise under the pulling force of the right elastic member 11, thereby driving the driving sprocket 5 to rotate in the reverse direction, and further driving the water supply hard pipe section 220, the disc 6 and the atomizing nozzle 7 to rotate in the reverse direction. In this way, by pulling the pulling member 18 to pull the chain 10 to slide repeatedly in the counterclockwise / clockwise direction, the atomizing nozzle 7 rotates, realizing the angle adjustment of the atomizing nozzle 7, that is, realizing the multi-angle spraying of the atomizing nozzle 7, increasing the water curtain range, and thus increasing the dust reduction range.

[0039] The above are only the embodiments of the present invention. Common general knowledge such as specific structures and characteristics in the solutions is not described in detail here. It should be noted that for those skilled in the art, without departing from the structure of the present invention, several deformations and improvements can still be made, which should also be regarded as the protection scope of the present invention, and these will not affect the implementation effect of the present invention and the practicality of the present invention. The specific implementation manners and the like in the specification can be used to explain the content of the claims.

Claims

1. A tunnel multi-angle dust reduction device, comprising an arch frame and a plurality of water supply pipes, characterized in that: The water supply pipe includes a water supply hose section and a water supply rigid pipe section. The water supply rigid pipe section is rotatably installed on the arch frame. A driving sprocket is coaxially and fixedly connected to the water supply rigid pipe section. A disc is fixedly connected to one end of the water supply rigid pipe section away from the water supply hose section. An atomizing nozzle is fixedly installed on the disc. The atomizing nozzle is eccentrically arranged. A water storage cavity is formed in the disc. The water supply rigid pipe section and the atomizing nozzle are both communicated with the water storage cavity. A chain is provided on the arch frame. The chain meshes with the driving sprockets on a number of water supply rigid pipe sections. Both ends of the chain are respectively connected to both ends of the arch frame through elastic members.

2. The tunnel multi-angle dust reduction device according to claim 1, wherein: An arched water delivery pipe is fixedly installed on the arch frame. One end of the water supply hose section away from the water supply rigid pipe section is communicated with the arched water delivery pipe.

3. The tunnel multi-angle dust reduction device according to claim 1, characterized in that: A guide shaft is rotatably connected to the arch frame. A guide sprocket meshing with the chain is coaxially and fixedly connected to the guide shaft.

4. The tunnel multi-angle dust reduction device according to claim 3, wherein: A driving assembly for driving the chain is provided on the arch frame. The driving assembly includes a driving motor for driving the guide shaft to rotate and a horizontal plate for installing the driving motor. The horizontal plate is fixedly connected to the arch frame.

5. The tunnel multi-angle dust reduction device according to claim 1, characterized in that: Bottom plates are fixedly connected to both ends of the arch frame. A pulling member for pulling the chain is fixedly installed on the bottom plates. The pulling member is a cylinder, a hydraulic cylinder or an electric push rod. One end of an elastic member away from the chain is fixedly connected to the output end of the pulling member. The other end of the elastic member away from the chain is fixedly connected to the bottom plate.

6. The multi-angle dust reduction device for tunnels according to claim 5, characterized in that: A number of rollers are fixedly installed on the bottom surface of the bottom plate.

7. The tunnel multi-angle dust reduction device according to claim 1, characterized in that: The chain is in an S shape after meshing with a number of driving sprockets.

8. The tunnel multi-angle dust reduction device according to claim 1, characterized in that: The elastic member is an elastic rope or a telescopic spring.

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