A working face monitoring device for tunnel construction by drilling and blasting method

Abstract

The application relates to the technical field of engineering monitoring, in particular to a working face monitoring device for a tunnel constructed by the drill-and-blast method; the device comprises a shell, a pair of fixing frames arranged symmetrically above the shell, a connecting fixing column fixedly connected in the shell, a fixing support table coaxially fixedly connected with the connecting fixing column, a camera arranged on the fixing support table, a protective cover rotationally connected in the shell, and the protective cover is a polygon; the fixing support table and the camera are located in the protective cover; a rotating mechanism matched with the protective cover is arranged in the shell; a cleaning brush matched with the cleaning mechanism is arranged in the shell; the device effectively solves the problem that dust is attached to the camera lens during working face monitoring after tunnel blasting construction, and guarantees the integrity and accuracy of the monitoring picture.

Description

Technical Field

[0001] This invention relates to the field of engineering monitoring technology, specifically to a monitoring device for the working face of tunnels constructed using the drill-and-blast method. Background Technology

[0002] In the excavation of underground engineering projects such as tunnels, to improve blasting efficiency, it is necessary to first construct a sufficient free face, then gradually expand the pre-set trench to the entire working face, then precisely arrange the blast holes according to the drilling and blasting parameter diagram, and finally detonate the explosives to achieve the excavation of the working face. To ensure the personal safety of construction personnel, all construction personnel must retreat to a safe area more than 200 meters away from the blasting point during blasting operations.

[0003] However, after blasting operations are completed, the exposed area of ​​the surrounding rock at the working face increases significantly, and the blasting process generates a large amount of toxic and harmful gases and dust, making it impossible to immediately conduct on-site inspection and assessment of the blasting effect manually. Therefore, the industry commonly uses drones to monitor the actual situation inside the tunnel after blasting to solve the problem of the inability to conduct immediate manual inspections.

[0004] However, current drone monitoring devices have a relatively simple structure, mostly consisting only of the drone itself and a camera. Because the dust content in the air inside the tunnel is extremely high after blasting, this suspended dust easily adheres to the camera lens surface, causing a significant decrease in camera image clarity. This severely affects the integrity and accuracy of the monitoring footage, thus greatly diminishing the effectiveness of drone monitoring and failing to provide reliable technical support for subsequent construction decisions. Summary of the Invention

[0005] To address the aforementioned issues, this invention proposes a working face monitoring device for tunnels constructed using the drill-and-blast method. This device effectively solves the problem of dust adhering to the camera lens during working face monitoring after tunnel blasting in existing technologies, ensuring the integrity and accuracy of the monitoring images.

[0006] To achieve the above objectives, the present invention proposes the following technical solution: A working face monitoring device for tunnels constructed using the drill-and-blast method, the device being mounted on a drone, comprising a shell, a pair of fixed frames symmetrically arranged on the top of the shell, a connecting fixed column fixedly connected inside the shell, a fixed support platform coaxially fixed to the connecting fixed column, a camera mounted on the fixed support platform, and a protective cover rotatably connected inside the shell, the protective cover being polygonal; the fixed support platform and the camera are both located inside the protective cover, a rotating mechanism cooperating with the protective cover is provided inside the shell, a cleaning brush cooperating with the protective cover is provided inside the shell, and a cleaning mechanism cooperating with the cleaning brush is provided inside the shell.

[0007] Furthermore: the rotating mechanism includes a rotating worm wheel and a rotating worm shaft rotatably connected inside the housing, the rotating worm wheel and the rotating worm shaft meshing with each other; a rotating motor is coaxially fixed to the rotating worm shaft, a rotating disk is coaxially fixed to the rotating worm wheel, and a protective cover is fixed to the upper surface of the rotating disk.

[0008] Furthermore: the cleaning mechanism includes a guide rail frame installed inside the housing, a rotating stud rotatably connected to the guide rail frame, a reciprocating motor coaxially fixed to the rotating stud, a sliding sleeve screwed onto the rotating stud, a pair of fixed guide posts provided on the guide rail frame, the fixed guide posts being symmetrically arranged on both sides of the rotating stud; each fixed guide post is slidably connected to the sliding sleeve; a connecting slide rod is fixedly connected to the sliding sleeve, a telescopic slide rod is sleeved on the connecting slide rod, the telescopic slide rod is slidably connected to the connecting slide rod, and the other end of the telescopic slide rod is fixedly connected to the cleaning brush; a pair of guide posts are fixedly connected to the telescopic slide rod, the guide posts being symmetrically arranged on both sides of the telescopic slide rod; the guide rail frame is provided with guide grooves that cooperate with the guide posts.

[0009] Furthermore: the connecting slide rod is a polygonal column, and the telescopic slide rod is provided with a telescopic groove that cooperates with the connecting slide rod.

[0010] Furthermore: the telescopic slide rod is fixed to the cleaning brush at the middle position of the cleaning brush.

[0011] Furthermore: the guide groove is L-shaped.

[0012] Furthermore, the protective cover has equal lengths on all sides.

[0013] Furthermore: the length of the cleaning brush is not less than the side length of the protective cover.

[0014] Furthermore: the mounting bracket is connected to the drone.

[0015] Compared with the prior art, the gain effect of the present invention is as follows: The protective cover provides comprehensive protection for the camera, effectively preventing dust from adhering to the camera and affecting the monitoring effect. The combination of the rotating mechanism and the cleaning mechanism can effectively clean the dust adhering to the protective cover. At the same time, the flat design of each side of the protective cover avoids the distortion problem caused by curved glass imaging, thus ensuring the integrity and accuracy of the monitoring image. Attached Figure Description

[0016] Figure 1 This is a perspective view of the present invention.

[0017] Figure 2 This is a diagram of the internal structure of the present invention.

[0018] Figure 3 This is a perspective view of the cleaning mechanism of the present invention.

[0019] Figure 4This is a perspective view of the rotating mechanism of the present invention.

[0020] In the diagram: 1. Outer shell, 2. Protective cover, 3. Rotary disc, 4. Fixing frame, 5. Camera, 6. Guide rail frame, 7. Telescopic slide bar, 8. Cleaning brush, 9. Guide column, 10. Reciprocating motor, 11. Sliding sleeve, 12. Rotating stud, 13. Fixed guide column, 14. Fixed support platform, 15. Connecting slide bar, 16. Rotating worm gear, 17. Rotating worm, 18. Connecting fixing column, 19. Rotating motor. Detailed Implementation

[0021] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] A working face monitoring device for tunnel construction using the drill-and-blast method is mounted on a drone. The device includes a shell 1, with a pair of fixed frames 4 symmetrically arranged above the shell 1. A connecting fixed column 18 is fixedly connected inside the shell 1, and a fixed support platform 14 is coaxially fixed to the connecting fixed column 18. A camera 5 is mounted on the fixed support platform 14. A protective cover 2 is rotatably connected inside the shell 1. The protective cover 2 is polygonal, with each surface being flat. The fixed support platform 14 and the camera 5 are both located inside the protective cover 2. A rotating mechanism that cooperates with the protective cover 2 is provided inside the shell 1. A cleaning brush 8 that cooperates with the protective cover 2 is also provided inside the shell 1, along with a cleaning mechanism that cooperates with the cleaning brush 8.

[0023] The rotating mechanism includes a rotating worm wheel 16 and a rotating worm 17 rotatably connected inside the housing 1, with the rotating worm wheel 16 and the rotating worm 17 meshing with each other; a rotating motor 19 is coaxially fixed to the rotating worm 17, and a rotating disk 3 is coaxially fixed to the rotating worm wheel 16; the protective cover 2 is fixed to the upper surface of the rotating disk 3.

[0024] The cleaning mechanism includes a guide rail frame 6 installed inside the outer casing 1. A rotating stud 12 is rotatably connected to the guide rail frame 6. A reciprocating motor 10 is coaxially fixed to the rotating stud 12. A sliding sleeve 11 is screwed onto the rotating stud 12. A pair of fixed guide posts 13 are provided on the guide rail frame 6, symmetrically arranged on both sides of the rotating stud 12. The fixed guide posts 13 are slidably connected to the sliding sleeves 11. A connecting slide rod 15 is fixedly connected to the sliding sleeve 11. A telescopic slide rod 7 is sleeved on the connecting slide rod 15 and slidably connected to the connecting slide rod 15. The other end of the telescopic slide rod 7 is fixedly connected to a cleaning brush 8. A pair of guide posts 9 are fixedly connected to the telescopic slide rod 7, symmetrically arranged on both sides of the telescopic slide rod 7. The guide rail frame 6 is provided with guide grooves that cooperate with the guide posts 9.

[0025] The connecting slide rod 15 is a multi-dimensional column, and the telescopic slide rod 7 is provided with a telescopic groove that cooperates with the connecting slide rod 15.

[0026] The telescopic slide bar 7 is fixed to the cleaning brush 8 at the middle position of the cleaning brush 8.

[0027] The guide groove is L-shaped.

[0028] The protective cover 2 has equal lengths on all sides.

[0029] The length of the cleaning brush 8 shall not be less than the side length of the protective cover 2.

[0030] Mount 4 is connected to the drone.

[0031] like Figure 1 , 2As shown in Figures 3 and 4: When operating this application, the outer shell 1 can be mounted on the drone using the mounting frame 4. After the tunnel drilling and blasting method is carried out, the drone can use the outer shell 1 to monitor the working face. During the monitoring process, the camera 5 can monitor the working face through the protective cover 2. If dust adheres to the protective cover 2 corresponding to the camera 5, the side of the protective cover 2 can be replaced by the rotating mechanism to ensure the clarity of the monitoring and shooting. When the side of the protective cover 2 with dust corresponds to the cleaning brush 8, it can be cleaned by the cleaning mechanism to ensure its clarity. During the operation of the rotating mechanism, the rotating motor 19 drives the rotating worm 17 to rotate. The rotation of the rotating worm 17 will drive the rotating disk 3 and the protective cover 2 to rotate through the rotating worm wheel 16, thereby realizing the replacement of the side corresponding to the protective cover 2. When the cleaning mechanism is running, the fixed guide column 13... Under the action of the reciprocating motor 10, the rotating stud 12 can be driven to rotate. The rotation of the rotating stud 12 will drive the sliding sleeve 11 and the connecting slide rod 15 to slide. The sliding of the connecting slide rod 15 will drive the telescopic slide rod 7 and the cleaning brush 8 to move downward. Under the action of the guide post 9 and the guide groove, the telescopic slide rod 7 and the connecting slide rod 15 will slide relative to each other during the downward sliding process. Thus, the cleaning brush 8 first extends to contact the side of the protective cover 2, and then the cleaning brush 8 slides downward, thereby brushing off the dust on the corresponding side of the protective cover 2. After the cleaning brush 8 has finished cleaning, the reciprocating motor 10 rotates in the opposite direction to reset the cleaning brush 8, so as not to affect the next cleaning operation. This effectively solves the problem of dust adhering to the camera lens when monitoring the working face after tunnel blasting construction in the prior art, and ensures the integrity and accuracy of the monitoring image.

[0032] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0033] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this invention can be understood according to the specific circumstances.

Claims

1. A working face monitoring device for tunnels constructed using the drill-and-blast method, the device being mounted on a drone, characterized in that: Includes an outer shell (1), a pair of fixed brackets (4) are provided on the top of the outer shell (1), the fixed brackets (4) are symmetrically arranged on the top of the outer shell (1), a connecting fixed column (18) is fixedly connected inside the outer shell (1), a fixed support platform (14) is coaxially fixed to the connecting fixed column (18), a camera (5) is provided on the fixed support platform (14), a protective cover (2) is rotatably connected inside the outer shell (1), the protective cover (2) is polygonal, and each surface of the protective cover (2) is flat; the fixed support platform (14) and the camera (5) are both located inside the protective cover (2), a rotating mechanism that cooperates with the protective cover (2) is provided inside the outer shell (1), a cleaning brush (8) that cooperates with the protective cover (2) is provided inside the outer shell (1), and a cleaning mechanism that cooperates with the cleaning brush (8) is provided inside the outer shell (1).

2. The working face monitoring device for tunnels constructed using the drill-and-blast method according to claim 1, characterized in that: The rotating mechanism includes a rotating worm wheel (16) and a rotating worm (17) rotatably connected inside the housing (1), the rotating worm wheel (16) and the rotating worm (17) meshing with each other; the rotating worm (17) is coaxially fixed to a rotating motor (19), the rotating worm wheel (16) is coaxially fixed to a rotating disk (3), and the protective cover (2) is fixed to the upper surface of the rotating disk (3).

3. The working face monitoring device for tunnels constructed using the drill-and-blast method according to claim 1, characterized in that: The cleaning mechanism includes a guide rail frame (6) installed inside the outer casing (1). A rotating stud (12) is rotatably connected to the guide rail frame (6). A reciprocating motor (10) is coaxially fixed to the rotating stud (12). A sliding sleeve (11) is screwed onto the rotating stud (12). A pair of fixed guide posts (13) are provided on the guide rail frame (6). The fixed guide posts (13) are symmetrically arranged on both sides of the rotating stud (12). The fixed guide posts (13) are all slidably connected to the sliding sleeve (11). Dynamic connection; a connecting slide rod (15) is fixedly connected to the sliding screw sleeve (11), and a telescopic slide rod (7) is sleeved on the connecting slide rod (15). The telescopic slide rod (7) is slidably connected to the connecting slide rod (15), and the other end of the telescopic slide rod (7) is fixedly connected to the cleaning brush (8). A pair of guide posts (9) are fixedly connected to the telescopic slide rod (7), and the guide posts (9) are symmetrically arranged on both sides of the telescopic slide rod (7). The guide rail frame (6) is provided with guide grooves that cooperate with the guide posts (9).

4. The working face monitoring device for tunnels constructed using the drill-and-blast method according to claim 1, characterized in that: The connecting slide rod (15) is a multi-dimensional column, and the telescopic slide rod (7) is provided with a telescopic groove that matches the connecting slide rod (15).

5. The working face monitoring device for tunnels constructed using the drill-and-blast method according to claim 1, characterized in that: The telescopic slide bar (7) is fixed to the cleaning brush (8) at the middle position of the cleaning brush (8).

6. The working face monitoring device for tunnels constructed using the drill-and-blast method according to claim 1, characterized in that: The guide groove is L-shaped.

7. The working face monitoring device for tunnels constructed using the drill-and-blast method according to claim 1, characterized in that: The protective cover (2) has equal lengths on all sides.

8. The working face monitoring device for tunnels constructed using the drill-and-blast method according to claim 1, characterized in that: The length of the cleaning brush (8) is not less than the side length of the protective cover (2).

9. The working face monitoring device for tunnels constructed using the drill-and-blast method according to claim 1, characterized in that: The mounting bracket (4) is connected to the drone.

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