A tunnel construction monitoring device

Abstract

The present invention relates to the field of tunnel construction, and in particular to a tunnel construction monitoring device. In view of the problem that the tunnel monitoring construction device in the prior art is inconvenient to clean the monitor lens and is inconvenient to store and carry, the following scheme is proposed, which includes: a support frame, which includes a chassis and a plurality of support feet installed on the bottom surface of the chassis, a cover plate installed on the top surface of the mounting plate through a connecting mechanism, a mounting hole is opened on the top surface of the cover plate, and a fixing ring is fixed on the top surface of the chassis; a camera mechanism, which includes a mounting plate connected to the mounting hole through a rotating shaft, a monitor installed on the top surface of the mounting plate, and a transmission assembly installed on the mounting plate for driving the mounting plate to flip. The present invention can automatically clean the dust on the outer surface of the monitor during the storage of the monitor, and can also automatically drill the auger into the soil while the cover plate rises, thereby achieving the purpose of stabilizing the support frame.

Description

Technical Field

[0001] The invention relates to the field of tunnel construction, and in particular to a tunnel construction monitoring device. Background Art

[0002] During the construction of the tunnel, in order to ensure the safety of the construction, it is necessary to monitor the situation in the tunnel in real time. At present, the monitoring of the tunnel is often completed by placing a monitor in the tunnel. However, due to the construction in the tunnel, the air in the tunnel is often mixed with a lot of dust, water mist and other factors that affect the monitoring field of view, which makes the monitoring data easily blurred and inaccurate.

[0003] The external structure of the monitoring instrument in the prior art is relatively simple, and the monitoring instrument cannot be cleaned independently. Moreover, since the tunnel is usually long, the monitoring device needs to be adjusted according to the construction location. During the construction in the tunnel, the movement of personnel and the transportation of equipment are likely to touch the monitoring instrument. The existing monitoring device cannot be stored and carried conveniently and simply. Therefore, this scheme proposes a tunnel construction monitoring device. Summary of the invention

[0004] The present invention provides a tunnel construction monitoring device, which solves the problem that the tunnel construction monitoring device in the prior art is inconvenient to clean the monitor lens and is inconvenient to store and carry.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A tunnel construction monitoring device, comprising:

[0007] A support frame, comprising a chassis and a plurality of support legs mounted on the bottom surface of the chassis, a cover plate mounted on the top surface of the chassis via a connecting mechanism, a mounting hole being provided on the top surface of the cover plate, and a fixing ring being fixed on the top surface of the chassis;

[0008] A camera mechanism, comprising a mounting plate rotatably connected to the mounting hole through a rotating shaft, a monitor mounted on the top surface of the mounting plate, and a transmission assembly mounted on the mounting plate for driving the mounting plate to flip, wherein the transmission assembly cooperates with the connecting mechanism to drive the mounting plate to flip after the cover plate is opened;

[0009] The cleaning mechanism comprises a plurality of cleaning brushes rotatably connected to the inner side of a fixed ring, a sleeve rotatably connected to the top surface of a chassis, and a rotating disk fixed to the top of the sleeve, wherein the rotating disk is located inside the fixed ring, a gear ring is fixed to the top surface of the rotating disk, a linkage gear meshing with the outer ring of the gear ring is fixed to the bottom of the cleaning brush, and a driving assembly for driving the sleeve to rotate is installed on the bottom surface of the chassis;

[0010] The positioning mechanism comprises a movable shaft movably sleeved in a sleeve, a screwdriver fixed at the bottom of the movable shaft, and a force-applying component installed on the bottom surface of the chassis for driving the movable shaft to move along the axial direction of the sleeve when the sleeve rotates.

[0011] Through the above technical solution, not only can the dust on the outer surface of the monitor be automatically cleaned during the storage of the monitor, but the auger can also be automatically drilled into the soil when the cover plate rises, thereby stabilizing the support frame.

[0012] As a further improvement of the above scheme, the number of the connecting mechanisms is at least two, the top surface of the chassis is provided with a mounting groove for installing the connecting mechanism, and the number of the mounting grooves is the same as the number of the connecting mechanisms, the mounting groove is arranged along the radial direction of the chassis, and one end of the mounting groove extends to directly below the turntable, the connecting mechanism includes a transmission screw rotatably connected in the mounting groove, a moving block threadedly sleeved on the outer periphery of the transmission screw, a connecting rod hinged on the top of the moving block, and a connecting gear sleeved on the outer periphery of the transmission screw, the bottom surface of the turntable is fixed with a gear ring meshing with the connecting gear, and the other end of the connecting rod is hinged to the top surface of the cover plate.

[0013] Through the above technical solution, multiple transmission screws can be driven to rotate simultaneously by the rotation of the turntable, thereby completing the lifting or lowering of the cover plate.

[0014] As a further improvement of the above scheme, side holes are arranged opposite to each other on both sides of the mounting hole, one end of the rotating shaft is rotatably connected to the inner wall of the side hole facing the mounting hole, and the transmission assembly includes a torsion spring installed on the outer periphery of the rotating shaft, a transmission gear sleeved on the outer periphery of the rotating shaft, and a transmission rack movably arranged in the side hole and meshing with the transmission gear, the bottom of the transmission rack extends to the bottom of the cover plate and cooperates with the connecting rod, and a through hole for the transmission rack to pass through is provided at the top of the side hole.

[0015] Through the above technical solution, the rotation of the transmission rack is used to drive the rotation of the rotating shaft, which can then drive the mounting plate to flip.

[0016] As a further improvement of the above solution, abutment rings are fixed on the inner side walls of the two oppositely arranged connecting rods, and an abutment plate is fixed to the end of the abutment ring away from the connecting rod, and the abutment plate cooperates with the transmission rack.

[0017] Through the above technical solution, the rotation of the connecting rod drives the abutment ring to rotate, and then the rotation of the abutment ring is used to drive the transmission rack to rise.

[0018] As a further improvement of the above scheme, the bottom of the sleeve extends to the bottom of the chassis, and the driving assembly includes a telescopic part installed on the bottom surface of the chassis, a driving rack fixed on the output shaft of the telescopic part, and a driving gear sleeved on the outer periphery of the sleeve, and the driving gear is meshed with the driving rack.

[0019] Through the above technical solution, the sleeve can be driven to rotate when the telescopic member is extended or retracted.

[0020] As a further improvement of the above scheme, the movable shaft is a regular polygonal column structure, the inner ring of the sleeve is consistent with the outer circumference of the movable shaft, a sliding groove arranged along its axial direction is opened on the outer wall of one side of the sleeve, and a sliding block is fixed on the outer wall of one side of the movable shaft, and the other end of the sliding block passes through the sliding groove and extends to the outside of the sleeve.

[0021] Through the above technical solution, it is ensured that the movable shaft can move along the axial direction of the sleeve and can also rotate synchronously with the sleeve.

[0022] As a further improvement of the above scheme, the force-applying assembly includes a limiting ring movably mounted on the outer periphery of the sleeve and a force-applying member installed on the bottom surface of the chassis for driving the limiting ring to move. The inner ring of the limiting ring is provided with a limiting groove coaxially arranged therewith, and one end of the slider extends into the limiting groove and is slidably connected therewith.

[0023] Through the above technical solution, the slider can be driven to move up and down when the limiting ring is driven to move up and down.

[0024] As a further improvement of the above scheme, the force-applying member includes a fixed screw rotatably connected to the bottom surface of the chassis and a connecting block threadedly sleeved on the outer periphery of the fixed screw, the outer periphery of the fixed screw is sleeved with a driven gear meshing with the driving gear, and one end of the connecting block is fixedly connected to the outer ring of the limit ring.

[0025] Through the above technical solution, when the sleeve rotates, the fixed screw is driven to rotate, so that the sleeve can be used to drive the fixed screw to rotate, thereby driving the connecting block to move up and down.

[0026] As a further improvement of the above solution, a hand-held rod is fixed at the center of the bottom surface of the mounting plate.

[0027] Through the above technical solution, the entire device can be conveniently moved or transported by holding the handle.

[0028] As a further improvement of the above solution, a cleaning groove for linking the inner and outer sides of the fixing ring is opened at the bottom of the fixing ring, and the cleaning groove is coaxially arranged with the fixing ring.

[0029] Through the above technical solution, dust on the inner side of the fixing ring can be easily discharged from the cleaning groove.

[0030] Compared with the prior art, the present invention has the following beneficial effects:

[0031] 1. Through the cooperation between the connecting mechanism and the transmission assembly, after the camera follows the cover plate to rise to a certain height, the mounting plate can be driven to flip while the cover plate continues to rise, so that the monitor can be rotated above the cover plate, while also ensuring that the mounting plate will not be blocked by the fixing ring when rotating. In addition, under the action of the torsion spring, the mounting plate can be automatically driven to flip back when the cover plate descends, so that when the cover plate is closed on the top of the fixing ring, the monitor can be stored on the inner side of the fixing ring, thereby avoiding bumps during transportation.

[0032] 2. Through the cooperation between the cleaning mechanism and the connecting mechanism, multiple cleaning brushes can be driven to rotate simultaneously while the cover is raised and lowered, so that after the monitor enters the inside of the fixed ring, the rotating cleaning brush can be used to clean the dust on the surface of the monitor.

[0033] 3. Through the setting of the positioning mechanism, the auger can be driven to rotate while the cover plate is lifted and lowered by rotating the sleeve, and the force-applying component can be driven to operate while the auger is rotating, thereby applying an upward or downward force to the auger, so that the auger can be inserted into the soil conveniently and labor-savingly, thereby achieving the purpose of stabilizing the monitoring device, and it is also convenient to pull the auger out of the soil when the cover plate is lowered. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of the structure of the present invention when it is working;

[0035] Figure 2 It is a schematic diagram of the structure of the bottom surface when the present invention is working;

[0036] Figure 3 It is a structural schematic diagram of the present invention when the monitor is facing downward during the closing process of the cover plate;

[0037] Figure 4 This is a schematic diagram of the structure when the cover plate of the present invention is completely closed;

[0038] Figure 5 Schematic diagram of the inner structure of the fixed ring;

[0039] Figure 6 It is a schematic diagram of the structure of the fixed ring after being cut open;

[0040] Figure 7 is a cross-sectional view of the cover plate;

[0041] Figure 8 It is a schematic diagram of the structure of the sleeve and the drive assembly;

[0042] Fig. 9 A cross-sectional view of the sleeve.

[0043] Description of main symbols:

[0044] 1. Chassis; 2. Cover; 3. Monitor; 4. Mounting plate; 5. Rotating shaft; 6. Transmission rack; 7. Cleaning brush; 8. Connecting rod; 9. Moving block; 10. Mounting slot; 11. Fixed ring; 12. Movable shaft; 13. Auger; 14. Transmission screw; 15. Support foot; 16. Abutment ring; 17. Telescopic member; 18. Drive rack; 19. Limiting ring; 20. Sleeve; 21. Connecting block; 22. Fixed screw; 23. Hand-held rod; 24. Gear ring; 25. Turntable; 26. Linkage gear; 27. Transmission gear; 28. Torsion spring; 29. ​​Side hole; 30. Mounting hole; 31. Slide slot; 32. Sliding block; 33. Driving gear; 34. Driven gear; 35. Cleaning slot. DETAILED DESCRIPTION

[0045] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0046] Example 1: Please combine Figure 1 - Fig. 9 , a tunnel construction monitoring device of this embodiment includes:

[0047] A support frame includes a chassis 1 and a plurality of supporting feet 15 installed on the bottom surface of the chassis 1. A cover plate 2 is installed on the top surface of the chassis 1 through a connecting mechanism. A fixing ring 11 is fixed on the top surface of the chassis 1. A mounting hole 30 is provided on the top surface of the cover plate 2. The number of connecting mechanisms is at least two. A mounting groove 10 for installing the connecting mechanism is provided on the top surface of the chassis 1, and the number of the mounting grooves 10 is the same as the number of the connecting mechanisms. The mounting groove 10 is arranged along the radial direction of the chassis 1, and one end of the mounting groove 10 extends to the bottom of the turntable 25. The connecting mechanism includes a transmission screw 14 rotatably connected in the mounting groove 10, a moving block 9 threadedly sleeved on the outer periphery of the transmission screw 14, a connecting rod 8 hinged on the top of the moving block 9 and a connecting gear sleeved on the outer periphery of the transmission screw 14. The other end of the connecting rod 8 is hinged to the top surface of the cover plate 2, and the moving block 9 is driven to move by the rotation of the transmission screw 14. After the multiple transmission screws 14 rotate synchronously, the cover plate 2 can be driven to rise or fall through the connecting rod 8.

[0048] The camera mechanism includes a mounting plate 4 rotatably connected to the mounting hole 30 via a rotating shaft 5, a monitor 3 mounted on the top surface of the mounting plate 4, and a transmission component mounted on the mounting plate 4 for driving the mounting plate 4 to flip. The transmission component cooperates with the connecting mechanism to drive the mounting plate 4 to flip after the cover plate 2 is opened. The mounting plate 4 can be flipped so that the monitor 3 faces upward when working, and can face downward when transported or stored when not working, and the cover plate 2 covers the top of the fixing ring 11, so that the monitor 3 is stored inside the fixing ring 11, thereby protecting the monitor 3.

[0049] Side holes 29 are provided on both sides of the mounting hole 30, and one end of the rotating shaft 5 is rotatably connected to the inner wall of the side hole 29 facing the mounting hole 30. The transmission assembly includes a torsion spring 28 installed on the outer periphery of the rotating shaft 5, a transmission gear 27 sleeved on the outer periphery of the rotating shaft 5, and a transmission rack 6 movably arranged in the side hole 29 and meshing with the transmission gear 27. The bottom of the transmission rack 6 extends to the bottom of the cover plate 2 and cooperates with the connecting rod 8. A through hole for the transmission rack 6 to pass through is provided on the top of the side hole 29, wherein the inner side walls of the two oppositely arranged connecting rods 8 are fixed with abutment rings 16, and an abutment plate is fixed to the end of the abutment ring 16 away from the connecting rod 8, and the abutment plate is matched with the transmission rack 6. The movement of the transmission rack 6 is used to drive the rotation of the rotating shaft 5, thereby driving the mounting plate 4 to flip over. The setting of the abutment ring 16 is that it will abut with the transmission rack 6 only after the connecting rod 8 rotates a certain angle. At this time, the monitor 3 has been raised to the outside of the fixing ring 11, thereby preventing the fixing ring 11 from affecting the rotation of the mounting plate 4. Thereafter, when the cover plate 2 continues to rise, the abutment ring 16 continues to rotate with the connecting rod 8 and lifts the transmission rack 6 upward, thereby driving the rotation of the rotating shaft 5, thereby driving the mounting plate 4 to flip over. The setting of the torsion spring 28 automatically drives the mounting to flip back when the cover plate 2 gradually descends, so that the monitor 3 gradually faces downward.

[0050] The cleaning mechanism includes a plurality of cleaning brushes 7 rotatably connected to the inner side of the fixing ring 11, a sleeve 20 rotatably connected to the top surface of the chassis 1, and a rotating disk 25 fixed to the top of the sleeve 20. The rotating disk 25 is located inside the fixing ring 11, a gear ring 24 is fixed to the top surface of the rotating disk 25, a linkage gear 26 meshing with the outer ring of the gear ring 24 is fixed to the bottom of the cleaning brush 7, a driving assembly for driving the sleeve 20 to rotate is installed on the bottom surface of the chassis 1, and the bottom of the sleeve 20 extends to the bottom of the chassis 1. The driving assembly includes an extension gear 26 installed on the bottom surface of the chassis 1. The telescopic member 17, a driving rack 18 fixed on the output shaft of the telescopic member 17 and a driving gear 33 sleeved on the outer periphery of the sleeve 20, the driving gear 33 is meshed with the driving rack 18, the telescopic member 17 is an electric telescopic rod, and the sleeve 20 is driven to rotate while the telescopic member 17 is extended and retracted, thereby rotating the turntable 25, and the rotation of the turntable 25 drives multiple cleaning brushes 7 to rotate, so that after the monitor 3 enters the inner side of the fixing ring 11, the dust on the surface of the monitor 3 can be cleaned while the cover plate 2 continues to descend.

[0051] A cleaning groove 35 for connecting the inside and outside of the fixing ring 11 is provided at the bottom of the fixing ring 11 , and the cleaning groove 35 is coaxially arranged with the fixing ring 11 . The arrangement of the cleaning groove 35 facilitates the discharge of dust inside the fixing ring 11 .

[0052] A gear ring meshing with the connecting gear is fixed to the bottom surface of the turntable 25. The turntable 25 can drive multiple connecting gears to rotate while rotating, thereby driving multiple transmission screws 14 to rotate at the same time, and then the cover plate 2 can be driven to rise and fall when the sleeve 20 rotates.

[0053] The positioning mechanism includes a movable shaft 12 movably sleeved in the sleeve 20, an auger 13 fixed to the bottom of the movable shaft 12, and a force-applying component installed on the bottom surface of the chassis 1 for driving the movable shaft 12 to move along the axial direction of the sleeve 20 when the sleeve 20 rotates. The movable shaft 12 is a regular polygonal column structure, and the inner ring of the sleeve 20 coincides with the outer circumference of the movable shaft 12. A slide groove 31 is provided on the outer wall of one side of the sleeve 20 along its axial direction. A slider 32 is fixed on the outer wall of one side of the movable shaft 12. The other side of the slider 32 is provided with a slide groove 31. One end extends through the slide groove 31 to the outside of the sleeve 20. When the sleeve 20 rotates, it will drive the movable shaft 12 and the auger 13 to rotate at the same time. When the cover plate 2 rises, the sleeve 20 is driven forward. At this time, a downward force is applied to the slider 32, so that the auger 13 can gradually drill into the ground, thereby stabilizing the support frame and preventing it from collapsing easily. Conversely, when the cover plate 2 descends, it will drive the sleeve 20 to reverse. At this time, an upward force is applied to the slider 32, so that the auger 13 can be pulled out of the soil.

[0054] The implementation principle of this embodiment is as follows: when in use, the device is placed in a suitable position, and then the telescopic member 17 is started to extend. After the telescopic member 17 extends, it drives the driving rack 18 to move leftward, and then drives the sleeve 20 to rotate forward. After the sleeve 20 rotates forward, it drives the rotating disk 25 to rotate forward, and on the other hand, it drives the movable shaft 12 and the auger 13 to rotate forward. When the auger 13 rotates forward, a downward force is applied to the slider 32, and the auger 13 can gradually drill into the soil, thereby playing a role in stabilizing the support frame.

[0055] The rotating disk 25 drives the gear ring 24 and the gear ring to rotate synchronously forward while the rotating disk 25 rotates forward. After the gear ring 24 rotates, it drives multiple linkage gears 26 to rotate, thereby causing the cleaning brush 7 to rotate. When the monitor 3 is located inside the fixed ring 11, the rotating cleaning brush 7 can be used to clean the dust on the outer surface of the monitor 3. After the gear ring rotates forward, it can drive multiple connecting gears to reverse, thereby driving multiple transmission screws 14 to reverse. At this time, the moving block 9 will move to the side close to the fixed ring 11, and then the cover plate 2 can be gradually lifted up. Until the monitor 3 is fully raised to the outside of the fixed ring 11, the abutment plate at one end of the abutment ring 16 begins to contact with the transmission gear. When the block 9 continues to move toward the fixed ring 11, the connecting rod 8 also drives the abutting ring 16 to rotate toward the side close to the transmission rack 6, so that the transmission rack 6 can be gradually lifted upward. After the transmission rack 6 moves upward, it drives the transmission gear 27 to rotate forward, and then drives the rotating shaft 5 to rotate forward. The mounting plate 4 also flips over, and the monitor 3 gradually flips upward. At this time, the torsion spring 28 is gradually compressed until the mounting plate 4 rotates 180 degrees, and the monitor 3 is vertically upward. Then the telescopic member 17 stops extending, and the height of the cover plate 2 remains unchanged. Then the monitor 3 can be opened to monitor the situation in the tunnel.

[0056] On the contrary, when the monitor 3 needs to be stored inside the fixing ring 11, the telescopic member 17 can be driven to retract, and the rack 18 is driven to move right, thereby driving the sleeve 20 to reverse, and the turntable 25 and the auger 13 also reverse accordingly. At this time, an upward force is applied to the slider 32, and the auger 13 can be gradually pulled out of the soil;

[0057] After the turntable 25 is reversed, it can drive the cleaning brush 7 to rotate and drive the transmission screw 14 to rotate forward. After the transmission screw 14 is forward, it drives the moving block 9 to move to the side away from the fixed ring 11, thereby driving the cover plate 2 to descend. The connecting rod 8 also gradually rotates to the side away from the transmission rack 6 under the movement of the moving block 9, so that the pressing force of the abutment ring 16 on the transmission rack 6 gradually decreases, and the rotating shaft 5 is reversed under the action of the torsion spring 28, so that the mounting plate 4 automatically flips back, and the monitor 3 also gradually flips downward. Until the abutment ring 16 is out of contact with the transmission rack 6, the mounting plate 4 flips back 180 degrees again, so that the monitor 3 is vertically facing downward. Then, with the continued reversal of the turntable 25, the cover plate 2 continues to descend until the monitor 3 enters the fixed ring 11. At this time, the dust on the outer surface of the monitor 3 will be cleaned by the rotating cleaning brush 7 until the cover plate 2 covers the top of the fixed ring 11 and the contraction of the telescopic member 17 is stopped. After that, the support frame can be held in the hand to transport or move the entire device.

[0058] Example 2: Combination Figure 1 , Figure 2 , Figure 8 and Fig. 9 The present embodiment is further improved on the basis of the embodiment 1 in that: the force-applying component comprises a limit ring 19 movably sleeved on the outer periphery of the sleeve 20 and a force-applying member installed on the bottom surface of the chassis 1 for driving the limit ring 19 to move, the inner ring of the limit ring 19 is provided with a limit groove coaxially arranged therewith, one end of the slider 32 extends into the limit groove and slides therewith, the force-applying member comprises a fixed screw 22 rotatably connected to the bottom surface of the chassis 1 and a connecting block 21 threadedly sleeved on the outer periphery of the fixed screw 22, the outer periphery of the fixed screw 22 is sleeved with a driven gear 34 meshing with the driving gear 33, one end of the connecting block 21 is fixedly connected to the outer ring of the limit ring 19, and the fixed screw 22 is driven to rotate by the rotation of the sleeve 20, so that the limit ring 19 can be driven to descend when the sleeve 20 is running forward, thereby applying a downward force to the slider 32, and conversely, when the sleeve 20 is reversed, an upward force can be applied to the slider 32.

[0059] The implementation principle of this embodiment is as follows: when the sleeve 20 rotates, the fixed screw 22 is driven to rotate. When the sleeve 20 is rotating forward, the fixed screw 22 is driven to reverse through the active gear 33, thereby driving the connecting block 21 to descend, and the connecting block 21 then drives the limit ring 19 to descend synchronously, and then drives the slider 32 to descend, thereby applying a downward force to the auger 13 so that it can gradually drill into the soil. Conversely, when the sleeve 20 rotates forward, it drives the fixed screw 22 to rotate forward, and the limit ring 19 moves upward accordingly, thereby driving the slider 32 to move upward, thereby applying an upward force to the auger 13 so that it can be pulled out of the soil.

[0060] Example 3: Combination Figure 2 , Figure 4 and Figure 7 Based on the embodiment 1, the present embodiment is further improved in that a hand-held rod 23 is fixed at the center of the bottom surface of the mounting plate 4. The setting of the hand-held rod 23 makes it convenient to hold the entire device in the hand for carrying.

[0061] The implementation principle of this embodiment is: when the monitor 3 is vertically downward, the hand-held rod 23 is vertically upward. When the cover 2 is closed on the top of the fixing ring 11, the monitor 3 is stored inside the fixing ring 11, and then the hand-held rod 23 can be held to hold the entire device in the hand, so that it is convenient to carry and move.

[0062] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A tunnel construction monitoring device, characterized in that: include: A support frame, comprising a chassis and a plurality of support legs mounted on the bottom surface of the chassis, a cover plate mounted on the top surface of the chassis via a connecting mechanism, a mounting hole being provided on the top surface of the cover plate, and a fixing ring being fixed on the top surface of the chassis; A camera mechanism, comprising a mounting plate rotatably connected to the mounting hole through a rotating shaft, a monitor mounted on the top surface of the mounting plate, and a transmission assembly mounted on the mounting plate for driving the mounting plate to flip, wherein the transmission assembly cooperates with the connecting mechanism to drive the mounting plate to flip after the cover plate is opened; The cleaning mechanism comprises a plurality of cleaning brushes rotatably connected to the inner side of a fixed ring, a sleeve rotatably connected to the top surface of a chassis, and a rotating disk fixed to the top of the sleeve, wherein the rotating disk is located inside the fixed ring, a gear ring is fixed to the top surface of the rotating disk, a linkage gear meshing with the outer ring of the gear ring is fixed to the bottom of the cleaning brush, and a driving assembly for driving the sleeve to rotate is installed on the bottom surface of the chassis; The positioning mechanism comprises a movable shaft movably sleeved in the sleeve, an auger fixed to the bottom of the movable shaft, and a force-applying component mounted on the bottom surface of the chassis for driving the movable shaft to move along the axial direction of the sleeve when the sleeve rotates; The number of the connecting mechanisms is at least two, the top surface of the chassis is provided with a mounting groove for mounting the connecting mechanisms, and the number of the mounting grooves is the same as the number of the connecting mechanisms, the mounting grooves are arranged along the radial direction of the chassis, and one end of the mounting grooves extends to the bottom of the turntable, the connecting mechanism comprises a transmission screw rotatably connected in the mounting groove, a moving block threadedly sleeved on the outer periphery of the transmission screw, a connecting rod hinged on the top of the moving block, and a connecting gear sleeved on the outer periphery of the transmission screw, a gear ring meshing with the connecting gear is fixed on the bottom surface of the turntable, and the other end of the connecting rod is hinged to the top surface of the cover plate; Oppositely arranged side holes are provided on both sides of the mounting hole, one end of the rotating shaft is rotatably connected to the inner wall of the side hole facing the mounting hole, the transmission assembly includes a torsion spring installed on the outer periphery of the rotating shaft, a transmission gear sleeved on the outer periphery of the rotating shaft, and a transmission rack movably arranged in the side hole and meshing with the transmission gear, the bottom of the transmission rack extends to the bottom of the cover plate and cooperates with the connecting rod, the movement of the transmission rack is utilized to drive the rotating shaft to rotate, thereby driving the mounting plate to flip, and a through hole for the transmission rack to pass through is provided at the top of the side hole.

2. A tunnel construction monitoring device according to claim 1, characterized in that: An abutment ring is fixed on the inner side walls of two oppositely arranged connecting rods, and an abutment plate is fixed on one end of the abutment ring away from the connecting rod, and the abutment plate is matched with the transmission rack.

3. A tunnel construction monitoring device according to claim 1, characterized in that: The bottom of the sleeve extends to the bottom of the chassis. The driving assembly includes a telescopic member installed on the bottom surface of the chassis, a driving rack fixed on the output shaft of the telescopic member, and a driving gear sleeved on the outer periphery of the sleeve. The driving gear is meshed with the driving rack.

4. A tunnel construction monitoring device according to claim 1, characterized in that: The movable shaft is a regular polygonal column structure, the inner ring of the sleeve is consistent with the outer circumference of the movable shaft, a slide groove is provided on the outer wall of one side of the sleeve along its axial direction, a slider is fixed on the outer wall of one side of the movable shaft, and the other end of the slider passes through the slide groove and extends to the outside of the sleeve.

5. A tunnel construction monitoring device according to claim 4, characterized in that: The force-applying assembly includes a limiting ring movably mounted on the outer periphery of the sleeve and a force-applying member installed on the bottom surface of the chassis for driving the limiting ring to move. The inner ring of the limiting ring is provided with a limiting groove coaxially arranged therewith, and one end of the slider extends into the limiting groove and is slidably connected therewith.

6. A tunnel construction monitoring device according to claim 5, characterized in that: The force applying member includes a fixed screw rotatably connected to the bottom surface of the chassis and a connecting block threadedly sleeved on the outer periphery of the fixed screw, the outer periphery of the fixed screw is sleeved with a driven gear meshing with the driving gear, and one end of the connecting block is fixedly connected to the outer ring of the limiting ring.

7. A tunnel construction monitoring device according to claim 1, characterized in that: A hand-held rod is fixed at the center of the bottom surface of the mounting plate.

8. A tunnel construction monitoring device according to claim 1, characterized in that: The bottom of the fixing ring is provided with a cleaning groove for linking the inner and outer sides of the fixing ring, and the cleaning groove is coaxially arranged with the fixing ring.

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