A tunnel monitoring device

Abstract

The utility model relates to tunnel detection technical field, concretely relates to a kind of tunnel monitoring equipment, comprising: fixed frame, vibration sensor, laser ranging sensor, adjusting mechanism for adjusting the position of the laser ranging sensor;The adjusting mechanism includes: first motor, the output shaft of the first motor is fixedly connected with rotating shaft, toothed wheel is fixedly installed on the rotating shaft, synchronous belt is installed on the toothed wheel, adjusting rod is fixed and passes through on the synchronous belt, the top of the adjusting rod is slidably installed in limiting groove, the limiting groove is arranged on mobile seat.In the utility model, the time of vibration is sensed by vibration sensor to locate the position of the seismic source, and the deformation of the potential damage area is collected by adjusting the laser ranging sensor through the adjusting mechanism, without using the laser ranging sensor for a long time, to avoid the impact of laser on the vision of the personnel in passing vehicles.

Description

Technical Field

[0001] This utility model relates to the field of tunnel detection technology, specifically to a tunnel monitoring device. Background Technology

[0002] Tunnels are affected by dynamic factors such as geological activities (e.g., landslides, earthquakes), traffic load fluctuations, and changes in groundwater pressure, which may cause sudden structural damage (e.g., rapid crack propagation, sudden lining detachment). Long-term, continuous data collection and analysis of tunnels through tunnel monitoring is a key means to grasp the tunnel's structural safety and environmental status in real time, especially in complex geological or high traffic load scenarios. Monitoring methods include fiber optic sensing (real-time strain), microseismic monitoring (capturing precursors of rock bursts), and GNSS (mountain displacement early warning).

[0003] With the development of information-based monitoring technology, automated monitoring equipment has begun to be widely installed on the inner walls of tunnels under construction and in operation to monitor the deformation of the surrounding rock and ensure the safety of tunnel construction and operation.

[0004] Existing technologies, such as the utility model patent with publication number CN221527618U, describe a real-time monitoring device for tunnel lining deformation, which includes an installation mechanism, an adjustment device located below the installation mechanism, and a laser ranging sensor located below the adjustment device. The adjustment device includes a U-shaped shell connected to the installation mechanism, a horizontal moving mechanism located inside the U-shaped shell, a forward and backward swinging mechanism connected to the upper side of the laser ranging sensor, and a driving mechanism connected to the forward and backward swinging mechanism. The forward and backward swinging mechanism cooperates with the horizontal moving mechanism and can move horizontally; thereby facilitating the adjustment of the laser ranging sensor to move horizontally and swing back and forth, so that the laser ranging sensor is aligned with the target, improving the accuracy of data acquisition.

[0005] When laser rangefinders are used for extended periods, the laser beam can impair the vision of people in passing vehicles, posing a safety hazard.

[0006] Therefore, it is necessary to provide a new technical solution to overcome the above-mentioned defects. Utility Model Content

[0007] The purpose of this invention is to provide a tunnel monitoring device that can effectively solve the above-mentioned technical problems.

[0008] To achieve the purpose of this utility model, the following technical solution is adopted: a tunnel monitoring device, comprising: a fixed frame, a vibration sensor, a laser rangefinder sensor, and an adjustment mechanism for adjusting the position of the laser rangefinder sensor;

[0009] The adjustment mechanism includes: a first motor, the output shaft of the first motor being fixedly connected to a rotating shaft, a toothed wheel being fixedly mounted on the rotating shaft, a synchronous belt being mounted on the toothed wheel, an adjustment rod being fixedly mounted on and passing through the synchronous belt, the top of the adjustment rod being slidably mounted in a limiting groove, and the limiting groove being disposed on a movable seat.

[0010] Furthermore, the movable seat is slidably mounted on the limiting rod, and the limiting rod is fixedly mounted on the fixed frame.

[0011] Furthermore, a second motor is fixedly mounted on the movable base, and the output shaft of the second motor is fixedly connected to the mounting base, which is hinged to the movable base.

[0012] Furthermore, the laser rangefinder sensor is mounted on the mounting base.

[0013] Furthermore, the limiting groove is annular, and the cross-section of the limiting groove is T-shaped.

[0014] Furthermore, the diameter of the limiting groove is larger than the diameter of the toothed wheel.

[0015] Furthermore, the vibration sensor is electrically connected to the controller, and the controller is electrically connected to the first motor and the second motor.

[0016] Compared with the prior art, the present invention has the following advantages: The present invention is a tunnel monitoring device that uses a vibration sensor to detect the vibration time to locate the vibration source, and uses an adjustment mechanism to adjust the laser rangefinder to collect data on the deformation degree of the potential damage zone. It does not require the laser rangefinder to be used for a long time, thus avoiding the laser from affecting the vision of people in passing vehicles. Attached Figure Description

[0017] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0018] Figure 1 This is a schematic diagram of the structure of a tunnel monitoring device according to the present invention.

[0019] Figure 2 This is a schematic diagram of one side of the adjustment mechanism in this utility model.

[0020] Figure 3 This is a schematic diagram of the other side of the adjustment mechanism in this utility model.

[0021] Figure 4 This is a schematic diagram of the adjustment mechanism in this utility model.

[0022] In the diagram: 1. Fixed frame; 2. Vibration sensor; 3. Adjustment mechanism; 31. First motor; 32. Fixed plate; 33. Rotating shaft; 34. Synchronous belt; 35. Adjusting rod; 36. Limiting groove; 37. Moving seat; 38. Limiting rod; 39. Second motor; 310. Mounting base; 311. Laser rangefinder sensor. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0024] In the description of this utility model, it should be understood that the terms "center," "lateral," "longitudinal," "front," "rear," "left," "right," "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and 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, and therefore should not be construed as a limitation on the scope of protection of this utility model. When a mechanism is referred to as being "fixed to" another mechanism, it can be directly on the other mechanism or there may be an intervening mechanism. When a mechanism is considered to be "connected" to another mechanism, it can be directly connected to the other mechanism or there may be an intervening mechanism at the same time. When a mechanism is considered to be "set on" another mechanism, it can be directly set on the other mechanism or there may be an intervening mechanism at the same time. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only.

[0025] like Figures 1 to 4 As shown, this utility model discloses a tunnel monitoring device, comprising: a fixed frame 1, a vibration sensor 2, a laser rangefinder 311, and an adjustment mechanism 3 for adjusting the position of the laser rangefinder 311. The fixed frame 1 is fixedly installed on the top of the tunnel inner wall. The vibration sensor 2 senses the vibration generated when the rock mass fractures, and the vibration time is sensed by the vibration sensor 2 to locate the position of the vibration source. The location of the vibration source and its surrounding area are the potential damage zone. The position and angle of the laser rangefinder 311 are adjusted by the adjustment mechanism 3 so that the laser emitted by the laser rangefinder 311 scans the potential damage zone. The reflected laser signal is received by the laser rangefinder 311, enabling data collection on the deformation degree of the potential damage zone.

[0026] The adjusting mechanism 3 includes: a first motor 31, which is fixedly mounted on a fixed plate 32, which is fixedly mounted in a fixed frame 1. The output shaft of the first motor 31 is fixedly connected to a rotating shaft 33, which is rotatably mounted on the fixed plate 32. The two rotating shafts 33 are symmetrically distributed. A toothed wheel is fixedly mounted on the rotating shaft 33, and a synchronous belt 34 is mounted on the toothed wheel. The output shaft of the first motor 31 drives one rotating shaft 33 to rotate, which in turn drives the toothed wheel to rotate. The toothed wheel drives the synchronous belt 34 to run, and the synchronous belt 34 drives the other toothed wheel to rotate. An adjusting rod 35 is fixedly mounted on and passes through the synchronous belt 34. The adjusting rod 35 is perpendicular to the fixed plate 32, and the top of the adjusting rod 35 is slidably mounted in a limiting groove 36. The limiting groove 36 is set on a moving seat 37, and the moving trajectory of the adjusting rod 35 is limited by the limiting groove 36.

[0027] Furthermore, the limiting groove 36 is annular, and the cross-section of the limiting groove 36 is T-shaped. The diameter of the limiting groove 36 is larger than the diameter of the toothed wheel. When the timing belt 34 drives the adjusting rod 35 to move, the adjusting rod 35 pushes the inner wall of the limiting groove 36, causing the moving seat 37 to move. When the adjusting rod 35 moves to one end of the timing belt 34 and makes a circumferential movement, the adjusting rod 35 moves along the limiting groove 36. The moving seat 37 moves through the operation of the timing belt 34. There is no need to use a threaded rod, thus avoiding the threaded rod being affected by dust.

[0028] It should be added that a limiting rail is provided on the fixed plate 32. The shape of the limiting rail is the same as that of the synchronous belt 34. One end of the adjusting rod 35 is slidably installed in the limiting rail. During the movement of the adjusting rod 35, the limiting rail limits the adjusting rod 35 to prevent the synchronous belt 34 from causing the adjusting rod 35 to deviate, which would lead to instability in the ranging process of the laser ranging sensor 311.

[0029] The movable seat 37 is slidably mounted on the limiting rod 38, which is fixedly mounted in the fixed frame 1. By setting multiple limiting rods 38, the movement trajectory of the movable seat 37 is fixed, and the movable seat 37 will not deflect randomly, thus ensuring the stability of the movable seat 37. A second motor 39 is fixedly mounted on the movable seat 37. The output shaft of the second motor 39 is fixedly connected to the mounting seat 310, which is hinged to the movable seat 37. A laser rangefinder sensor 311 is mounted on the mounting seat 310. The output shaft of the second motor 39 drives the mounting seat 310 to rotate, which in turn drives the laser rangefinder sensor 311 to deflect. Adjusting the angle of the laser rangefinder sensor 311 allows it to scan the seismic source and its surroundings, facilitating data collection on the deformation degree and extent of the potential damage zone.

[0030] Furthermore, the vibration sensor 2 is electrically connected to the controller, which in turn is electrically connected to the first motor 31 and the second motor 39. By setting at least three vibration sensors 2 at different positions on the top of the tunnel wall, the vibration sensors 2 detect the time difference between the arrival times of the P-wave and S-wave emitted by the vibration source, and transmit the data to the controller, which then processes the data according to the Geiger algorithm. (x0, y0, z0 are the coordinates of the earthquake source, v p The location data of the seismic source is calculated by "P-wave velocity". Then, the controller controls the first motor 31 and the second motor 39 to start, and adjust the laser range sensor 311 to a suitable position and angle. This enables the laser range sensor 311 to collect data on the degree and range of deformation in the potential damage zone, judge the danger level of the surrounding rock deformation, and facilitate maintenance.

[0031] Working principle:

[0032] The adjusting rod 35 is moved by the synchronous belt 34, and the adjusting rod 35 pushes the inner wall of the limiting groove 36, causing the moving seat 37 to move, thereby adjusting the angle of the laser rangefinder 311. This eliminates the need for a threaded rod, avoiding damage caused by using a threaded rod in dusty environments. Furthermore, the synchronous belt 34 can adjust the position of the laser rangefinder 311 over a long range. In addition, by setting at least three vibration sensors 2 to locate the vibration source, it is easy to adjust the alignment of the laser rangefinder 311 with the potential damage area. The laser rangefinder 311 does not need to be used for a long time, avoiding the laser from affecting the vision of people in passing vehicles. At the same time, it can reduce the distribution density of monitoring equipment and reduce monitoring costs.

[0033] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0034] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A tunnel monitoring device, characterized in that, include: Fixed frame, vibration sensor, laser rangefinder, and adjustment mechanism for adjusting the position of the laser rangefinder; The adjustment mechanism includes: a first motor, the output shaft of the first motor being fixedly connected to a rotating shaft, a toothed wheel being fixedly mounted on the rotating shaft, a synchronous belt being mounted on the toothed wheel, an adjustment rod being fixedly mounted on and passing through the synchronous belt, the top of the adjustment rod being slidably mounted in a limiting groove, and the limiting groove being disposed on a movable seat.

2. The tunnel monitoring device as described in claim 1, characterized in that, The movable seat is slidably mounted on the limiting rod, and the limiting rod is fixedly mounted on the fixed frame.

3. The tunnel monitoring device as described in claim 1, characterized in that, A second motor is fixedly mounted on the movable base, and the output shaft of the second motor is fixedly connected to the mounting base, which is hinged to the movable base.

4. The tunnel monitoring device as described in claim 3, characterized in that, The laser rangefinder sensor is mounted on the mounting base.

5. A tunnel monitoring device as described in claim 1, characterized in that, The limiting groove is annular, and the cross-section of the limiting groove is T-shaped.

6. A tunnel monitoring device as described in claim 5, characterized in that, The diameter of the limiting groove is larger than the diameter of the toothed wheel.

7. A tunnel monitoring device as described in claim 1, characterized in that, The vibration sensor is electrically connected to the controller, and the controller is electrically connected to the first motor and the second motor.

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