A safety monitoring device based on tunnel construction

Abstract

The present invention discloses a safety monitoring device based on tunnel construction, which relates to the field of laser safety detection technology. Drive motors are symmetrically fixedly installed at both ends of a fixed box, and the output shafts of the two drive motors are fixedly connected to electromagnetic blocks. Mounting frames are fixedly installed at positions corresponding to the two inner walls of the fixed box and the two drive motors. The present invention utilizes electromagnetic blocks to adsorb metal round blocks, and then the drive motor can drive the rotating shaft and the rotating block to rotate, so that the guide rollers can be used to fit the inner wall of the tunnel under construction. The guide rollers on both sides start the limiting and guiding function of the entire device. When the mobile base moves forward, the guide rollers always fit the inner wall of the tunnel, so that the entire device always remains in the middle of the tunnel, preventing the device from offsetting or colliding when encountering a bend during the forward movement. There is no need for staff to monitor the forward trajectory at all times, and the use is more convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of laser safety detection, and in particular to a safety monitoring device based on tunnel construction. Background Art

[0002] Tunnel engineering is a structure built underground, underwater, or in a mountain to lay railways or build roads for motor vehicles to pass. It can be divided into three categories according to its location: mountain tunnel engineering, underwater tunnel engineering, and urban tunnel engineering. Mountain tunnel engineering is to pass under mountains or hills to shorten distances and avoid steep slopes. Underwater tunnel engineering is to pass under rivers or straits or under the sea. Urban tunnel engineering is to pass underground in cities to meet the needs of railways passing through large cities. The construction process of a tunnel mainly includes tunnel planning, surveying, design, penetration control measurement, and construction. During the construction of a tunnel, cracks may appear in the tunnel, and the expansion of the cracks will cause the tunnel to break. The tunnel is large and prone to collapse, which affects the safety of workers. In order to ensure the safety of the project, it is necessary to regularly inspect the interior of the tunnel. However, manual inspection of the tunnel is easily affected by human subjective factors, with limited vision, and the observation results may be biased. Different inspectors may have different judgments on the same problem, resulting in inconsistent results. For this reason, a Chinese patent discloses a tunnel construction safety monitoring device with application number 202311171139.8. The patent can monitor the changes in the ground in real time by setting up a detection mechanism, which allows tunnel managers to promptly understand the depression or bulge of the ground so as to take corresponding maintenance and treatment measures.

[0003] However, the current equipment lacks a limiting and guiding mechanism when moving in the tunnel, and cannot adapt to some curves in the tunnel, causing the equipment to easily go astray or collide. Workers are required to monitor and adjust the direction of travel at all times, which increases the workload. In addition, if cracks or depressions appear on the inner wall of the tunnel, workers need to detect and observe them visually, which is prone to errors. Therefore, the present invention provides a safety monitoring device based on tunnel construction to meet people's needs. Summary of the Invention

[0004] The present invention provides a safety monitoring device based on tunnel construction, which can effectively solve the problem that the equipment proposed in the above-mentioned background technology lacks a limiting and guiding mechanism when moving in the tunnel, and cannot adapt to some curves in the tunnel, causing the equipment to easily go astray or collide, requiring staff to monitor and adjust the direction of travel at all times, increasing the workload, and any cracks or depressions on the inner wall of the tunnel require staff to detect and observe visually, which is prone to errors.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a safety monitoring device for tunnel construction, comprising a mobile base, a fixed box fixedly mounted on the top of the mobile base, a flip cover rotatably mounted on the middle of the top of the fixed box, and a guide adjustment mechanism provided inside the fixed box;

[0006] The guide adjustment mechanism includes a drive motor;

[0007] The two ends of the fixed box are symmetrically fixed with driving motors, and the output shafts of the two driving motors are fixedly connected to the electromagnetic blocks, and the mounting brackets are fixedly installed at the two inner walls of the fixed box and the corresponding positions of the two driving motors, and the middle of the mounting bracket is rotatably installed, and the bottom end of the rotating shaft is fixedly connected to a metal round block, and the middle of the rotating shaft is fixedly installed with a rotating block, one end of the rotating block is fixedly connected to the guide frame, and the middle of the guide frame is movably connected with a moving rod, and the middle of the guide frame is equidistantly provided with mounting holes, and the middle of the moving rod is equidistantly installed with mounting bolts, one end of the moving rod is fixedly connected to the fixing bracket, and the middle of the fixing bracket is movably installed with a rotating screw, and one end of the rotating screw is fixedly connected to the mounting seat, and a guide roller is installed in the middle of one end of the mounting seat;

[0008] The top of the guide frame is fixedly connected to a connecting frame, one end of the connecting frame is fixedly connected to a buffer spring, one end of the buffer spring is fixedly connected to an extrusion block, both sides of the extrusion block are symmetrically fixedly connected to guide cylinders, one end of the extrusion block is movably connected to a fixed frame, guide grooves are symmetrically provided at both ends of the fixed frame, a movable rod is movably installed through the middle of the fixed frame, one end of the movable rod is fixedly connected to a connecting block, one end of the fixed frame is fixedly connected to a connecting spring, and the other end of the movable rod is fixedly installed with a pressure sensor.

[0009] According to the above technical solution, the rotating shaft is located directly above the driving motor, and the top end of the electromagnetic block fits in with the bottom end of the metal round block;

[0010] The mounting bolts correspond to the mounting hole positions, the guide frame and the moving rod are fixedly connected by the mounting bolts, a threaded hole is provided at the end of the moving rod, the end of the rotating screw extends into the threaded hole, and the rotating screw and the fixed frame and the moving rod are all connected by threads.

[0011] According to the above technical solution, the guide cylinder is movable through the guide groove, and the end of the guide cylinder is fixedly connected to a limiting circular block, and the diameter of the limiting circular block is greater than the height of the guide groove;

[0012] The extrusion block is tightly attached to the end of the pressure sensor, one end of the connecting spring is connected to the connecting block, and the connecting spring is sleeved on the surface of the movable rod.

[0013] According to the above technical solution, a positioning rod is symmetrically fixedly installed in the middle of the fixed box, a rotating block is rotatably installed on the top of the positioning rod, and positioning notches are symmetrically opened on the sides of the rotating block. One end of the top of the positioning rod is fixedly connected to a limiting block, and a limiting groove is opened on the top of the limiting block. A limiting plug-in block is embedded in the limiting groove. One end of the rotating block is fixedly connected to a supporting arc plate, and positioning screw holes are equidistantly opened in the middle of the supporting arc plate, and a positioning stud is movably installed in the middle of the positioning screw holes.

[0014] A fixing seat is fixedly installed in the middle of one end of the top of the fixing box, a rotating rod is rotatably installed in the middle of the fixing seat, a spherical camera is fixedly installed on the top of the middle of the rotating rod, one end of the rotating rod is fixedly connected to a driving gear, and a guide plate is fixedly installed at the top of the fixing box at a position on one side of the fixing seat, one end of the guide plate is fixedly installed with an electric push rod, and one end of the electric push rod is fixedly connected to a driving rack.

[0015] According to the above technical solution, the limiting plug is movably embedded in the middle of a positioning notch, the bottom end of the fixed frame is tightly attached to the top end of the supporting arc plate, and the top of the positioning stud passes through the positioning screw hole and is tightly attached to one end of the bottom of the fixed frame.

[0016] According to the above technical solution, the driving rack is movably connected to the middle part of the guide plate, the driving gear is located directly above the driving rack, the driving gear and the driving rack are engaged with each other, and the signal input end of the electric push rod is connected to the signal output end of the pressure sensor.

[0017] According to the above technical solution, a ground foreign matter monitoring mechanism is fixedly installed at one end of the fixed box;

[0018] The ground foreign matter monitoring mechanism includes a fixed bracket;

[0019] Material toggling mechanism, its both ends are fixedly mounted on the base, and the supporting tractor has individual small size motor to drive the upper and lower ends of the gear train to move upwards to drive the lower frame, and the supporting tractor has the gear train that is mounted on the support frame of the upper and lower frames.

[0020] One end of the lifting plate is fixedly connected to a fixed long plate, both ends of the fixed long plate are symmetrically fixedly bonded with buffer pads, the ends of the buffer pads are fixedly connected to anti-collision long plates, and a vibration sensor is fixedly installed on the top of one end of the fixed long plate;

[0021] Adjustment motors are symmetrically fixedly installed at both ends of the top of the fixed box, the output shaft of the adjustment motor is fixedly connected to a rotating seat, and an observation camera is fixedly installed on the top of the rotating seat.

[0022] According to the above technical solution, there are five lifting frames and connecting plates, one of the five lifting frames is located at the end in the forward direction of the movable base, and four of the five lifting frames are symmetrically distributed on both sides of the fixed box.

[0023] According to the above technical solution, one end of the fitting block extends to above the contact button, and the distance between the fitting block and the mounting seat is greater than the thickness of the bottom of the lifting frame.

[0024] According to the above technical solution, the end of the vibration sensor is in contact with the inner end face of the anti-collision long plate, the horizontal plane height of the bottom end of the anti-collision long plate is lower than the horizontal plane height of the bottom end of the lifting frame, and the signal output end of the vibration sensor is connected to the signal input end of the adjustment motor.

[0025] Compared with the prior art, the present invention has the following beneficial effects: the present invention has a scientific and reasonable structure and is safe and convenient to use:

[0026] 1. A guide adjustment mechanism is provided, which uses an electromagnetic block to adsorb the metal round block, and then drives the motor to drive the rotating shaft and the rotating block to rotate, and adjust the position of the guide frame and the moving rod, so that the guide frame and the moving rod are rotated outward and extended so that the guide rollers can fit the inner wall of the tunnel under construction. The guide rollers on both sides start the limit guide function for the entire equipment. When the mobile base moves forward, the guide rollers always fit the inner wall of the tunnel, so that the entire equipment always remains in the middle of the tunnel, preventing the equipment from deflecting or colliding when encountering bends during the forward movement. There is no need for staff to constantly monitor the forward trajectory, which is more convenient to use.

[0027] At the same time, the moving rod and the guide frame can slide relative to each other, which makes it easy to adjust the position of the moving rod, so that the length of the guide frame and the moving rod after splicing meets the width of the tunnel. It is more flexible and adaptable to tunnel construction monitoring of various sizes. The rotating screw and the mounting seat can be rotated and adjusted to adjust the distance between the guide roller and the moving rod. After the position of the guide frame and the moving rod is adjusted, the position of the guide roller is fine-tuned so that the guide roller can be just close to the inner wall of the tunnel.

[0028] 2. The support arc plate and positioning studs are used to support and limit the position of the fixed frame to keep it in the same position. The connecting frame is fixedly connected to the guide frame, and the buffer spring supports the guide frame. Then, the pressure sensor can be used to monitor the force exerted on the guide frame and the moving rod. The guide roller is close to the inner wall of the tunnel, exerting a certain pressure on the pressure sensor. When cracks or depressions appear on the inner wall of the tunnel, the guide roller is embedded in the cracks and depressions, causing the pressure sensed by the pressure sensor to change. The staff can capture the situation of the inner wall of the tunnel in time. Without constant monitoring, they can grasp the situation when cracks and other conditions appear in time, making the monitoring method more convenient.

[0029] At the same time, the supporting arc plate and the rotating block can rotate around the positioning rod. When idle, they can be rotated outward and stored inside the fixed box. The positioning notch and the limit groove correspond to each other, and the limit plug is inserted to limit and fix the rotating block.

[0030] 3. The dome camera can be used to monitor the situation inside the tunnel. When cracks and depressions are detected on the inner wall of the tunnel, the electric push rod can pull the drive rack to move in the middle of the guide plate, engage and push the drive gear, so that the rotating rod and the dome camera rotate in the corresponding direction, thereby accurately capturing the situation of the inner wall of the tunnel, providing great convenience for remote viewing for staff.

[0031] 4. A ground foreign body monitoring mechanism is provided. The height of the lifting plate and the lifting frame can be adjusted by using a hydraulic telescopic rod, so that the ball is close to the ground when the equipment is moving inside the tunnel, and the flatness of the ground is monitored. When there are depressions and cracks in the ground, the ball will sink, and then the movable square rod and the fitting block will drop. The fit between the contact button and the fitting block is used to monitor the condition of the ball, so that the staff can grasp the situation in time when the ground is depressed. The front end of the fixed box, the guide frame and the bottom of the moving rod are all provided with ball structures, so that they can be spliced ​​and expanded to meet the overall range of the tunnel ground, to prevent blind spots in ground monitoring after the moving rod is extended or tilted, and the monitoring method is more accurate.

[0032] 5. The anti-collision long board plays a protective role when the equipment moves forward. When it collides with foreign objects, the vibration signal generated will be captured by the vibration sensor, and then the tilt angle of the observation camera will be adjusted to make it face downward to the ground to capture foreign objects. The foreign objects are detected by using the collision of the mechanism. The detection method is more accurate and convenient, preventing foreign objects such as soil or stones in the tunnel that are of the same material as the ground structure from falling and cannot be classified and captured by infrared cameras.

[0033] To sum up, by combining the guide adjustment mechanism and the ground foreign object monitoring mechanism, the inner wall and the ground of the tunnel can be monitored at the same time, and the scope of use can be adjusted according to the size specifications of the tunnel, and the scope of application is wider. The bottom of the guide frame and the moving rod are equipped with ball bearings and anti-collision long plates for ground monitoring, which cooperate and adapt to each other, so that the ground monitoring mechanism can meet the expansion range of the guide frame and the moving rod, and the use method is more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0035] In the attached figure:

[0036] Figure 1 It is a structural schematic diagram of the present invention;

[0037] Figure 2 This is a schematic diagram of the installation structure of the lifting frame of the present invention;

[0038] Figure 3 Schematic diagram of the installation structure of the supporting arc plate of the present invention;

[0039] Figure 4 Schematic diagram of the installation structure of the drive gear of the present invention;

[0040] Figure 5 Schematic diagram of the installation structure of the drive motor of the present invention;

[0041] Figure 6 It is a structural schematic diagram of the guide adjustment mechanism of the present invention;

[0042] Figure 7 It is a schematic diagram of the installation structure of the rotating block of the present invention;

[0043] Figure 8 Schematic diagram of the installation structure of the vibration sensor of the present invention;

[0044] Figure 9 It is a structural diagram of the ground foreign matter monitoring mechanism of the present invention;

[0045] Numbers in the figure: 1, mobile base; 2, fixed box; 3, flip cover;

[0046] 4. Guide adjustment mechanism; 401. Drive motor; 402. Electromagnetic block; 403. Mounting frame; 404. Rotating shaft; 405. Metal round block; 406. Rotating block; 407. Guide frame; 408. Moving rod; 409. Mounting hole; 410. Mounting bolt; 411. Fixing frame; 412. Rotating screw; 413. Mounting seat; 414. Guide roller; 415. Connecting frame; 416. Buffer spring; 417. Extrusion block; 418. Guide cylinder; 419. Fixing frame; 420. Guide groove ; 421, movable rod; 422, connecting block; 423, connecting spring; 424, pressure sensor; 425, positioning rod; 426, rotating block; 427, positioning notch; 428, limiting block; 429, limiting slot; 430, limiting plug; 431, supporting arc plate; 432, positioning screw hole; 433, positioning stud; 434, fixing seat; 435, rotating rod; 436, dome camera; 437, driving gear; 438, guide plate; 439, electric push rod; 440, driving rack;

[0047] 5. Ground foreign object monitoring mechanism; 501. Fixed bracket; 502. Connecting long board; 503. Connecting board; 504. Hydraulic telescopic rod; 505. Lifting plate; 506. Lifting frame; 507. Guide square hole; 508. Contact button; 509. Movable square rod; 510. Fitting block; 511. Mounting base; 512. Ball bearing; 513. Fixed long board; 514. Buffer pad; 515. Anti-collision long board; 516. Vibration sensor; 517. Adjustment motor; 518. Rotating seat; 519. Observation camera. DETAILED DESCRIPTION

[0048] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0049] Example: Figure 1-9 As shown, the present invention provides a technical solution, a safety monitoring device based on tunnel construction, comprising a mobile base 1, a fixed box 2 fixedly mounted on the top of the mobile base 1, a flip cover 3 rotatably mounted on the middle part of the top of the fixed box 2, and a guide adjustment mechanism 4 provided inside the fixed box 2;

[0050] The guide adjustment mechanism 4 includes a drive motor 401;

[0051] The driving motors 401 are symmetrically fixedly installed at both ends of the interior of the fixed box 2, and the output shafts of the two driving motors 401 are fixedly connected to the electromagnetic blocks 402. The mounting brackets 403 are fixedly installed at the corresponding positions of the two inner walls of the fixed box 2 and the two driving motors 401. The middle part of the mounting bracket 403 is rotatably installed with a rotating shaft 404, and the bottom end of the rotating shaft 404 is fixedly connected to a metal round block 405. The rotating shaft 404 is located just above the driving motor 401, and the top of the electromagnetic block 402 fits in with the bottom end of the metal round block 405. A rotating block 406 is fixedly installed in the middle of the rotating shaft 404, and one end of the rotating block 406 is fixedly connected to a guide frame 407. The middle part of the guide frame 407 is movably connected to a moving rod 408. Mounting holes 409 are equidistantly provided in the middle of the guide frame 407, and mounting bolts 410 are equidistantly provided in the middle of the moving rod 408. One end of the moving rod 408 is fixedly connected to a fixing bracket 411. The middle part of the frame 411 is movably provided with a rotating screw 412, one end of which is fixedly connected to a mounting seat 413, and the middle part of one end of the mounting seat 413 is provided with a guide roller 414. The electromagnetic block 402 is used to adsorb the metal round block 405, and then the driving motor 401 can drive the rotating shaft 404 and the rotating block 406 to rotate, and adjust the position of the guide frame 407 and the moving rod 408, so that the guide frame 407 and the moving rod 408 are rotated and extended outward, so that the guide rollers 414 can be used to fit the inner wall of the tunnel under construction. The guide rollers 414 on both sides start the limit guide function for the entire device. When the mobile base 1 moves forward, the guide rollers 414 are always in contact with the inner wall of the tunnel, so that the entire device is always kept in the middle of the tunnel, preventing the device from being offset or colliding when encountering a bend during the forward movement. There is no need for staff to monitor the forward trajectory at all times, and it is more convenient to use.

[0052] At the same time, the movable rod 408 and the guide frame 407 can slide relative to each other, making it easy to adjust the position of the movable rod 408, so that the length of the guide frame 407 and the movable rod 408 after being spliced ​​together meets the width of the tunnel, which is more flexible and adaptable to tunnel construction monitoring of various sizes and specifications. In addition, the rotating screw 412 and the mounting seat 413 can be rotated and adjusted to adjust the distance between the guide roller 414 and the movable rod 408. After the positions of the guide frame 407 and the movable rod 408 are adjusted, the position of the guide roller 414 is fine-tuned so that the guide roller 414 can be just in close contact with the inner wall of the tunnel.

[0053] The mounting bolts 410 correspond to the mounting holes 409 , and the guide frame 407 and the movable rod 408 are fixedly connected by the mounting bolts 410 . The movable rod 408 has a threaded hole at its end, and the end of the rotating screw 412 extends into the threaded hole. The rotating screw 412 is connected to the fixing frame 411 and the movable rod 408 by threads.

[0054] The top of the guide frame 407 is fixedly connected to a connecting frame 415, one end of the connecting frame 415 is fixedly connected to a buffer spring 416, one end of the buffer spring 416 is fixedly connected to an extrusion block 417, both sides of the extrusion block 417 are symmetrically fixedly connected to guide cylinders 418, one end of the extrusion block 417 is movably connected to a fixed frame 419, both ends of the fixed frame 419 are symmetrically provided with guide grooves 420, a movable rod 421 is movably installed through the middle of the fixed frame 419, one end of the movable rod 421 is fixedly connected to a connecting rod 421, and a connecting rod 421 is fixedly connected to a connecting rod 421. Block 422, one end of the fixed frame 419 is fixedly connected to a connecting spring 423, the other end of the movable rod 421 is fixedly installed with a pressure sensor 424, the guide cylinder 418 is movable through the guide groove 420, the end of the guide cylinder 418 is fixedly connected to a limiting circular block, the diameter of the limiting circular block is greater than the height of the guide groove 420, the extrusion block 417 is tightly attached to the end of the pressure sensor 424, one end of the connecting spring 423 is connected to the connecting block 422, and the connecting spring 423 is sleeved on the surface of the movable rod 421;

[0055] A positioning rod 425 is symmetrically fixedly installed in the middle of the fixed box 2, and a rotating block 426 is rotatably installed on the top of the positioning rod 425. A positioning notch 427 is symmetrically provided on the edge of the rotating block 426. One end of the top of the positioning rod 425 is fixedly connected to a limiting block 428. A limiting groove 429 is provided on the top of the limiting block 428. A limiting plug 430 is embedded in the limiting groove 429. One end of the rotating block 426 is fixedly connected to a supporting arc plate 431. Positioning screw holes 432 are equidistantly provided in the middle of the supporting arc plate 431. A positioning stud 433 is movably installed in the middle of the positioning screw hole 432. The limiting plug 430 is movably embedded in the middle of a positioning notch 427. The bottom end of the fixed frame 419 is tightly attached to the top of the supporting arc plate 431, and the top of the positioning stud 433 passes through the positioning screw hole 432 and is tightly attached. At one end of the bottom of the fixed frame 419, the support arc plate 431 and the positioning stud 433 are used to support and limit the position of the fixed frame 419 so that its position remains unchanged, and the connecting frame 415 is fixedly connected to the guide frame 407, and the buffer spring 416 supports the guide frame 407. Then, the pressure sensor 424 can be used to monitor the force exerted on the guide frame 407 and the moving rod 408. The guide roller 414 is tightly attached to the inner wall of the tunnel, exerting a certain pressure on the pressure sensor 424. When cracks or depressions appear on the inner wall of the tunnel, the guide roller 414 is embedded in the cracks and depressions, which will cause the pressure sensed by the pressure sensor 424 to change. The staff can capture the situation of the inner wall of the tunnel in time. There is no need to monitor it all the time, and they can grasp the situation in time when cracks and other situations appear. The monitoring method is more convenient.

[0056] At the same time, the supporting arc plate 431 and the rotating block 426 can rotate around the positioning rod 425. When idle, they can be rotated outward and stored inside the fixed box 2. The positioning notch 427 and the limiting groove 429 correspond to each other, and the limiting plug 430 is inserted to limit and fix the rotating block 426.

[0057] A fixing seat 434 is fixedly installed in the middle of one end of the top of the fixing box 2, a rotating rod 435 is rotatably installed in the middle of the fixing seat 434, a dome camera 436 is fixedly installed on the top of the middle of the rotating rod 435, one end of the rotating rod 435 is fixedly connected to a driving gear 437, the top of the fixing box 2 is located on one side of the fixing seat 434 and a guide plate 438 is fixedly installed, one end of the guide plate 438 is fixedly installed with an electric push rod 439, one end of the electric push rod 439 is fixedly connected to a driving rack 440, the driving rack 440 is movably engaged with the middle of the guide plate 438, and the driving gear 437 is located directly opposite to the driving rack 440. At the top, the driving gear 437 and the driving rack 440 are meshed with each other, and the signal input end of the electric push rod 439 is connected to the signal output end of the pressure sensor 424. The spherical camera 436 can be used to monitor the situation inside the tunnel. When cracks and depressions are detected on the inner wall of the tunnel, the electric push rod 439 can pull the driving rack 440 to move in the middle of the guide plate 438, meshing and pushing the driving gear 437, so that the rotating rod 435 and the spherical camera 436 rotate in the corresponding direction, thereby accurately capturing the situation of the inner wall of the tunnel, providing great convenience for remote viewing for staff;

[0058] A ground foreign matter monitoring mechanism 5 is fixedly mounted on one end of the fixed box 2;

[0059] The ground foreign matter monitoring mechanism 5 includes a fixing bracket 501;

[0060] One end of the fixed box 2 is fixedly installed with a fixed bracket 501, and the middle of one end of the two moving rods 408 is fixedly installed with a connecting long plate 502. The bottom ends of the fixed bracket 501, the two connecting long plates 502 and the two guide frames 407 are fixedly connected with a connecting plate 503. The two ends of the bottom of the connecting plate 503 are symmetrically fixed with hydraulic telescopic rods 504. A lifting plate 505 is fixedly connected between the bottom ends of the two hydraulic telescopic rods 504. A lifting frame 506 is fixedly installed at the bottom end of the lifting plate 505. The lifting frame 506 and the connecting plate 503 are fixedly installed. There are five of them. One of the five lifting frames 506 is located at the end of the forward direction of the mobile base 1. Four of the five lifting frames 506 are symmetrically distributed on both sides of the fixed box 2. The bottom of the lifting frame 506 is equidistantly provided with a guide square hole 507. The middle of the lifting frame 506 is equidistantly fixed at one side of the guide square hole 507 with a contact button 508. The middle of the guide square hole 507 is movably installed with a movable square rod 509. The top of the movable square rod 509 is fixedly connected to a fitting block 510. The bottom of the movable square rod 509 is fixed. It is connected to a mounting base 511, and a ball 512 is movably embedded in the bottom of the mounting base 511. One end of the fitting block 510 extends to the top of the contact button 508. The distance between the fitting block 510 and the mounting base 511 is greater than the thickness of the bottom of the lifting frame 506. The height of the lifting plate 505 and the lifting frame 506 can be adjusted by using the hydraulic telescopic rod 504, so that the ball 512 is close to the ground during the movement of the equipment inside the tunnel, and the flatness of the ground is monitored. When the ground is concave and cracked, it will cause the ball 512 to The movable square rod 509 and the fitting block 510 sink, and the fitting induction between the contact button 508 and the fitting block 510 is used to monitor the situation of the ball 512, so that the staff can grasp the situation in time when the ground is sunken. The front end of the fixed box 2, the guide frame 407 and the bottom of the movable rod 408 are all provided with mechanisms such as the ball 512, so that they can be spliced ​​and expanded to meet the overall range of the tunnel ground, preventing the blind spot of the ground monitoring after the extension or tilt adjustment of the movable rod 408, and the monitoring method is more accurate;

[0061] One end of the lifting plate 505 is fixedly connected to a fixed long plate 513, and both ends of the fixed long plate 513 are symmetrically fixedly bonded with buffer pads 514. The ends of the buffer pads 514 are fixedly connected to anti-collision long plates 515. A vibration sensor 516 is fixedly installed on the top of one end of the fixed long plate 513;

[0062] The two ends of the top of the fixed box 2 are symmetrically fixed with adjustment motors 517, and the output shaft of the adjustment motor 517 is fixedly connected to a rotating seat 518. An observation camera 519 is fixedly installed on the top of the rotating seat 518. The end of the vibration sensor 516 is in contact with the inner end face of the anti-collision long plate 515. The horizontal plane height of the bottom end of the anti-collision long plate 515 is lower than the horizontal plane height of the bottom end of the lifting frame 506. The signal output end of the vibration sensor 516 is connected to the signal input end of the adjustment motor 517. The anti-collision long plate 515 plays a protective role when the equipment moves forward. When colliding with foreign objects, the vibration signal generated will be captured by the vibration sensor 516, and then the inclination angle of the observation camera 519 is adjusted to face downward to the ground to capture foreign objects. The collision of the mechanism is used to detect foreign objects, and the detection method is more accurate and convenient, preventing foreign objects such as soil or stones in the tunnel that are of the same material as the ground structure from falling and being unable to be classified and captured by infrared cameras.

[0063] The working principle and use process of the present invention are as follows: First, the staff controls the equipment to move to the tunnel entrance position through the mobile base 1, opens the flip cover 3, pulls out the limit plug 430 upwards, rotates the supporting arc plate 431 and the rotating block 426, rotates them 90 degrees and extends out from the inside of the fixed box 2, and the other positioning notch 427 corresponds to the position of the limiting groove 429. The limit plug 430 is inserted into the positioning notch 427 and the limiting groove 429 to limit and fix the supporting arc plate 431. The electromagnetic block 402 is energized to generate magnetism to adsorb and fix the metal round block 405. The drive motor 401 is started, and the electric The magnet 402, the metal round block 405, and the rotating shaft 404 rotate, causing the guide frame 407 and the movable rod 408 to rotate and extend outward from the interior of the fixed box 2. The fixed frame 419 is placed on the surface of the supporting arc plate 431. According to the size specifications of the tunnel, the mounting bolts 410 are tightened to loosen the fixing of the movable rod 408 and the guide frame 407. The movable rod 408 is pulled to slide along the guide frame 407, so that the guide roller 414 approaches the inner wall of the tunnel. The movable rod 408 is then fixed with the mounting bolts 410. The guide roller 414 is pressed against the inner wall of the tunnel by rotating the rotating screw 412 and the mounting seat 413.

[0064] Then, according to the position of the fixing frame 419 on the top of the supporting arc plate 431, the positioning stud 433 is rotated from the bottom and screwed into the corresponding positioning screw hole 432. The positioning stud 433 is tightly attached to the surface of one end of the fixing frame 419, which plays a role of limiting and blocking the fixing frame 419. The guide frame 407 and the moving rod 408 maintain a certain inclination angle and are distributed on both sides of the fixed box 2. The electromagnetic block 402 is powered off so that it no longer absorbs the metal round block 405, so that the mobile base 1 and the fixed box 2 are located in the middle of the tunnel. At this time, the positions of the guide frame 407 and the connecting frame 415 remain unchanged, and the extrusion block 417 is tightly attached to the end of the pressure sensor 424, exerting a certain pressure on it. The buffer spring 416 and the connecting spring 423 both play a role of buffering protection, so that the pressure sensor 424 will not be damaged by excessive extrusion.

[0065] Next, the hydraulic telescopic rod 504 is extended downward, pushing the lifting plate 505 and the lifting frame 506 downward, causing the ball bearing 512 to contact the ground. As the hydraulic telescopic rod 504 continues to descend, the ball bearing 512 and the movable square rod 509 are pushed upward, causing the fitting block 510 to move away from the contact button 508. The fixed long plate 513 and the anti-collision long plate 515 are simultaneously lowered, causing the bottom end of the anti-collision long plate 515 to approach the ground.

[0066] The staff controls the mobile base 1 to enter the tunnel and continue to move forward. The guide rollers 414 on both sides are always in contact with the inside of the tunnel, playing the role of position limit monitoring. During the movement, the tunnel bends, causing the two guide rollers 414 to be subjected to different forces. As a result, the inclination angles of the guide frame 407 and the mobile rod 408 change with the force exerted by the inner wall of the tunnel on the guide rollers 414. The squeezing force exerted by the connecting frame 415 and the squeezing block 417 on the pressure sensor 424 changes, and the pressure sensor 424 transmits the signal change to the staff. The staff adjusts the movement trajectory and direction of the mobile base 1 according to the image captured by the dome camera 436. There is no need to pay attention to its movement at all times. Adjustment is made according to the signal change transmitted by the pressure sensor 424, which is more convenient.

[0067] At the same time, when cracks or depressions appear on the inner wall of the tunnel, the guide roller 414 will sink inward into the cracks and depressions when it moves to the corresponding position. The inclination angle of the guide frame 407 and the moving rod 408 will further change, so that the force of the squeezing block 417 on the pressure sensor 424 will change. The pressure sensor 424 will transmit the change of the pressure signal to the staff, reminding the staff that there is a problem on the inner wall of the tunnel. The control device will stop moving forward and control the electric push rod 439 to extend or contract, driving the drive rack 440 to move along the guide plate 438, meshing with the drive gear 437 and driving it to rotate, so that the dome camera 436 will rotate to the side where the problem occurs. The staff can remotely understand the situation of the inner wall of the tunnel through the dome camera 436 so that timely remedial measures can be taken later.

[0068] During the forward movement of the equipment, the anti-collision long plate 515 is spliced ​​and intercepted at the front end of the equipment. When there are foreign objects on the ground in front (stones, soil blocks falling from the top of the tunnel, or foreign objects rolling down from the side), the anti-collision long plate 515 will first collide with the foreign objects and generate vibrations, and the vibration sensor 516 will capture the vibration signal and then transmit the signal to the staff to control the equipment to stop moving forward, adjust the motor 517 to drive the rotating seat 518 to rotate, so that the observation camera 519 is tilted toward the foreign objects encountered in front of the ground. Then, the observation camera 519 can be controlled to face upwards to capture the situation on the top of the tunnel and judge whether there is any problem. It is possible to determine whether the top has fallen and mark the location of the problem in time for subsequent processing. At the same time, when the equipment moves forward, the ball 512 is always in contact with the ground. When the ground is flat, the ball 512 supports the movable square rod 509 and the fitting block 510, so that the fitting block 510 will not contact the contact button 508. If there is a dent or crack in the ground, the ball 512 will fall into the crack or dent during the movement of the equipment. The movable square rod 509 and the fitting block 510 will drop, and the fitting block 510 will contact the contact button 508, transmitting the signal to the staff for subsequent processing.

[0069] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or substitute equivalents for some of the technical features. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A safety monitoring device for tunnel construction, comprising a mobile base (1), characterized in that: A fixed box (2) is fixedly mounted on the top of the mobile base (1), a flip cover (3) is rotatably mounted in the middle of the top of the fixed box (2), and a guide adjustment mechanism (4) is provided inside the fixed box (2); The guide adjustment mechanism (4) includes a drive motor (401); Drive motors (401) are symmetrically fixedly installed at both ends of the interior of the fixed box (2), and the output shafts of the two drive motors (401) are fixedly connected to electromagnetic blocks (402). Mounting frames (403) are fixedly installed at positions corresponding to the two inner walls of the fixed box (2) and the two drive motors (401). A rotating shaft (404) is rotatably installed in the middle of the mounting frame (403), and a metal round block (405) is fixedly connected to the bottom end of the rotating shaft (404). A rotating block (406) is fixedly installed in the middle of the rotating shaft (404), and one end of the rotating block (406) is fixedly connected to the rotating shaft (404). A guide frame (407) is provided, wherein a moving rod (408) is movably connected to the middle of the guide frame (407), mounting holes (409) are equidistantly provided in the middle of the guide frame (407), mounting bolts (410) are equidistantly installed in the middle of the moving rod (408), one end of the moving rod (408) is fixedly connected to a fixing frame (411), a rotating screw (412) is movably installed in the middle of the fixing frame (411), one end of the rotating screw (412) is fixedly connected to a mounting seat (413), and a guide roller (414) is installed in the middle of one end of the mounting seat (413); The top of the guide frame (407) is fixedly connected to a connecting frame (415), one end of the connecting frame (415) is fixedly connected to a buffer spring (416), one end of the buffer spring (416) is fixedly connected to an extrusion block (417), two sides of the extrusion block (417) are symmetrically fixedly connected to guide cylinders (418), one end of the extrusion block (417) is movably connected to a fixed frame (419), two ends of the fixed frame (419) are symmetrically provided with guide grooves (420), a movable rod (421) is movably installed through the middle of the fixed frame (419), one end of the movable rod (421) is fixedly connected to a connecting block (422), one end of the fixed frame (419) is fixedly connected to a connecting spring (423), and the other end of the movable rod (421) is fixedly installed with a pressure sensor (424).

2. A safety monitoring device based on tunnel construction according to claim 1, characterized in that: The rotating shaft (404) is located directly above the driving motor (401), and the top end of the electromagnetic block (402) and the bottom end of the metal round block (405) are in contact with each other; The mounting bolt (410) corresponds to the position of the mounting hole (409); the guide frame (407) and the movable rod (408) are fixedly connected via the mounting bolt (410); a threaded hole is provided at the end of the movable rod (408); the end of the rotating screw (412) extends into the threaded hole; the rotating screw (412) and the fixing frame (411) and the movable rod (408) are all connected via threads.

3. A safety monitoring device based on tunnel construction according to claim 1, characterized in that: The guide cylinder (418) is movable and penetrates the guide groove (420), and the end of the guide cylinder (418) is fixedly connected to a limiting circular block, and the diameter of the limiting circular block is greater than the height of the guide groove (420); The extrusion block (417) is tightly attached to the end of the pressure sensor (424), one end of the connection spring (423) is connected to the connection block (422), and the connection spring (423) is sleeved on the surface of the movable rod (421).

4. A safety monitoring device based on tunnel construction according to claim 1, characterized in that: A positioning rod (425) is symmetrically fixedly installed in the middle of the interior of the fixed box (2), a rotating block (426) is rotatably installed on the top of the positioning rod (425), and a positioning notch (427) is symmetrically opened on the edge of the rotating block (426), one end of the top of the positioning rod (425) is fixedly connected to a limiting block (428), a limiting groove (429) is opened on the top of the limiting block (428), and a limiting plug (430) is embedded in the limiting groove (429), and one end of the rotating block (426) is fixedly connected to a supporting arc plate (431), and a positioning screw hole (432) is equidistantly opened in the middle of the supporting arc plate (431), and a positioning stud (433) is movably installed in the middle of the positioning screw hole (432); A fixed seat (434) is fixedly installed in the middle of one end of the top of the fixed box (2), a rotating rod (435) is rotatably installed in the middle of the fixed seat (434), a dome camera (436) is fixedly installed on the top of the middle of the rotating rod (435), one end of the rotating rod (435) is fixedly connected to a driving gear (437), a guide plate (438) is fixedly installed at the top of the fixed box (2) at a position on one side of the fixed seat (434), an electric push rod (439) is fixedly installed at one end of the guide plate (438), and one end of the electric push rod (439) is fixedly connected to a driving rack (440).

5. A safety monitoring device based on tunnel construction according to claim 4, characterized in that: The limiting plug (430) is movably embedded in the middle of a positioning notch (427), the bottom end of the fixing frame (419) is closely attached to the top end of the supporting arc plate (431), and the top of the positioning stud (433) passes through the positioning screw hole (432) and is closely attached to one end of the bottom of the fixing frame (419).

6. A safety monitoring device based on tunnel construction according to claim 4, characterized in that: The driving rack (440) is movably engaged with the middle portion of the guide plate (438), the driving gear (437) is located directly above the driving rack (440), the driving gear (437) and the driving rack (440) are meshed with each other, and the signal input end of the electric push rod (439) is connected to the signal output end of the pressure sensor (424).

7. The safety monitoring device based on tunnel construction according to claim 4, characterized in that: A ground foreign matter monitoring mechanism (5) is fixedly mounted on one end of the fixed box (2); The ground foreign matter monitoring mechanism (5) comprises a fixing bracket (501); A fixed bracket (501) is fixedly installed at one end of the fixed box (2), and a connecting long plate (502) is fixedly installed at the middle of one end of the two moving rods (408). The bottom ends of the fixed bracket (501), the two connecting long plates (502) and the two guide frames (407) are fixedly connected with a connecting plate (503). The two ends of the bottom of the connecting plate (503) are symmetrically fixedly installed with hydraulic telescopic rods (504). A lifting plate (505) is fixedly connected between the bottom ends of the two hydraulic telescopic rods (504). The bottom end of the lifting plate (505) is fixedly installed with a lifting plate (505). The lifting frame (506) is provided with a guide square hole (507) at equal intervals at the bottom of the lifting frame (506), and a contact button (508) is fixedly installed at equal intervals at a position on one side of the guide square hole (507) in the middle of the lifting frame (506), and a movable square rod (509) is movably installed in the middle of the guide square hole (507), and the top of the movable square rod (509) is fixedly connected to a fitting block (510), and the bottom of the movable square rod (509) is fixedly connected to a mounting base (511), and a ball (512) is movably embedded in the bottom of the mounting base (511); One end of the lifting plate (505) is fixedly connected to a fixed long plate (513), both ends of the fixed long plate (513) are symmetrically fixedly bonded with buffer pads (514), the ends of the buffer pads (514) are fixedly connected to anti-collision long plates (515), and a vibration sensor (516) is fixedly installed on the top of one end of the fixed long plate (513); Adjustment motors (517) are symmetrically fixedly mounted on both ends of the top of the fixed box (2); the output shaft of the adjustment motor (517) is fixedly connected to a rotating seat (518); and an observation camera (519) is fixedly mounted on the top of the rotating seat (518).

8. The safety monitoring device based on tunnel construction according to claim 7, characterized in that: The number of the lifting frames (506) and the connecting plates (503) is five, one of the five lifting frames (506) is located at the end of the moving base (1) in the forward direction, and four of the five lifting frames (506) are symmetrically distributed on both sides of the fixed box (2).

9. The safety monitoring device based on tunnel construction according to claim 7, characterized in that: One end of the fitting block (510) extends to above the contact button (508), and the distance between the fitting block (510) and the mounting base (511) is greater than the thickness of the bottom of the lifting frame (506).

10. The safety monitoring device based on tunnel construction according to claim 7, characterized in that: The end of the vibration sensor (516) is in contact with the inner end surface of the anti-collision long plate (515), the horizontal plane height of the bottom end of the anti-collision long plate (515) is lower than the horizontal plane height of the bottom end of the lifting frame (506), and the signal output end of the vibration sensor (516) is connected to the signal input end of the adjustment motor (517).

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