Subway tunnel settlement rapid detection device based on laser radar

Abstract

The utility model discloses a subway tunnel settlement rapid detection device based on a laser radar, belongs to the technical field of ground settlement detection, and solves the problems that an existing device is inconvenient to adjust the measurement position, is inconvenient to directly obtain the result of whether a tunnel settles or not, and is troublesome to use, the subway tunnel settlement rapid detection device comprises a bottom plate, and the top surface of the bottom plate is provided with a rotating plate; a detection assembly is arranged on the bottom plate and the rotating plate, connecting plates are fixedly mounted on the front side and the rear side of the top face of the left end of the bottom plate, a rotating rod is fixedly mounted on the side wall of the mounting groove, and the end, away from the rotating plate, of the rotating rod is rotatably mounted on the side wall of the connecting plate; the distance between the rotating plate and the first laser radar is measured through the first laser radar, meanwhile, the distance between the bottom face of the rotating plate and the second laser radar is measured through the second laser radar, corresponding numerical values are displayed through the first display screen and the second display screen, and if the numerical values displayed by the first display screen and the second display screen are inconsistent, the conclusion that the bottom face of the tunnel is partially settled can be obtained.

Description

Technical Field

[0001] This utility model relates to the field of ground settlement detection technology, specifically a rapid settlement detection device for subway tunnels based on lidar. Background Technology

[0002] Tunnel settlement refers to the downward movement of the tunnel structure, either as a whole or in parts. It is usually caused by factors such as uneven settlement of the foundation and disturbance caused by construction. Tunnel settlement affects the stability of the tunnel and traffic safety, so daily monitoring and timely early warning are necessary. When the tunnel structure moves downward in parts, it will cause the ground inside the tunnel to tilt.

[0003] A search revealed that patent application number 202222991194.9 discloses a fiber optic grating-based bridge, subway, and tunnel settlement detection device, comprising a ground surface and a main housing. Two prefabricated nail mechanisms are fixedly installed on the top surface of the ground surface. A sliding column is fixedly installed on the outer surface of one side wall of the main housing. A sleeve is slidably installed on the remaining end of the sliding column. An electronic level assembly is installed inside the main housing.

[0004] Although the fiber optic grating bridge, subway, and tunnel settlement detection device uses an electronic level component to perform multiple measurements at a specific location and then compares the results to determine whether the tunnel has settled, the device is not easy to adjust the measurement position and cannot directly obtain the result of whether the tunnel has settled, making it relatively cumbersome to use.

[0005] Therefore, we propose a rapid detection device for subway tunnel settlement based on lidar. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides a rapid detection device for subway tunnel settlement based on lidar, which solves the problems of existing devices being inconvenient to adjust the measurement position, inconvenient to directly obtain the result of whether the tunnel has settled, and cumbersome to use.

[0007] To achieve the above objectives, this utility model is implemented through the following technical solution: a rapid detection device for subway tunnel settlement based on lidar, comprising a base plate, a rotating plate provided on the top surface of the base plate, detection components provided on the base plate and the rotating plate, connecting plates fixedly installed on both the front and rear sides of the top surface of the left end of the base plate, mounting grooves provided on both the front and rear sides of the left end of the rotating plate, a rotating rod fixedly installed on the side wall of the mounting groove, and the end of the rotating rod away from the rotating plate being rotatably installed on the side wall of the connecting plate;

[0008] The detection assembly includes a first lidar, a second lidar, a first display screen, and a second display screen. The second lidar is fixedly installed in the middle of the top surface of the base plate, and the first lidar is fixedly installed in the middle of the top surface of the left end of the base plate. The first display screen and the second display screen are both fixedly installed on the top surface of the rotating plate. The first lidar is electrically connected to the first display screen, and the second lidar is electrically connected to the second display screen.

[0009] Preferably, a dual-axis hydraulic rod is provided in the middle of the top surface of the right end of the base plate. Both ends of the dual-axis hydraulic rod are hinged with hinge seats. The hinge seats at both ends of the dual-axis hydraulic rod are respectively fixedly installed on the top surface of the base plate and the bottom surface of the rotating plate. The dual-axis hydraulic rod can push the rotating plate to rotate around the rotating rod as an axis, so as to adjust the angle between the rotating plate and the connecting plate.

[0010] Preferably, a water droplet balancer is fixedly installed in the middle of the top surface of the rotating plate, and the first display screen and the second display screen are both located on the left side of the water droplet balancer. The water droplet balancer can be used to determine whether the rotating plate is parallel to the horizontal plane.

[0011] Preferably, each of the four corners of the bottom surface of the base plate is fixedly equipped with a caster wheel with a self-locking structure, which facilitates the movement of the device by rolling on the ground.

[0012] Preferably, a handle is fixedly installed on the right side of the top surface of the base plate, which facilitates pulling the device.

[0013] This invention provides a rapid detection device for subway tunnel settlement based on lidar. It offers the following advantages: This rapid detection device for subway tunnel settlement based on lidar adjusts the tilt angle of a rotating plate using a dual-axis hydraulic rod until a water droplet balancer indicates that the plate is parallel to the horizontal plane. A first lidar measures the distance between the plate and the horizontal plane, while a second lidar measures the distance between the plate's bottom surface and the plate. The corresponding values ​​are displayed on a first and a second display screen. If the displayed values ​​are inconsistent, it indicates that partial settlement of the tunnel floor has caused unevenness, leading to the conclusion that the tunnel floor has partially settled. Measurements can be taken anytime and anywhere, making it simple and convenient to use. It solves the problems of existing devices being inconvenient to adjust the measurement position, difficult to directly determine whether the tunnel has settled, and cumbersome to use. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a side view of the structure of this utility model;

[0016] Figure 3This is a schematic diagram of the top surface structure of the rotating plate of this utility model;

[0017] Figure 4 This is a schematic diagram of the top surface structure of the base plate of this utility model.

[0018] In the diagram: 1. Base plate; 2. Connecting plate; 3. Rotating plate; 31. Mounting slot; 4. Rotating rod; 5. Water droplet balancer; 6. First lidar; 61. First display screen; 7. Second lidar; 71. Second display screen; 8. Dual-axis hydraulic rod; 9. Caster wheel; 10. Handle. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Example 1:

[0021] like Figure 1-4As shown: The system includes a base plate 1, a rotating plate 3 on the top surface of the base plate 1, and detection components mounted on the base plate 1 and the rotating plate 3. Connecting plates 2 are fixedly installed on both the front and rear sides of the top left side of the base plate 1. Mounting grooves 31 are formed on both the front and rear sides of the left side of the rotating plate 3. Rotating rods 4 are fixedly installed on the side walls of the mounting grooves 31. The end of the rotating rod 4 away from the rotating plate 3 is rotatably mounted on the side wall of the connecting plate 2. The detection components include a first laser radar 6, a second laser radar 7, a first display screen 61, and a second display screen 71. The second laser radar 7 is fixedly installed in the middle of the top surface of the base plate 1, the first laser radar 6 is fixedly installed in the middle of the top left side of the base plate 1, and both the first display screen 61 and the second display screen 71 are fixedly installed on the top surface of the rotating plate 3. The first laser radar 6 is electrically connected to the first display screen 61, and the second laser radar 7 is electrically connected to the second display screen 71. A detection component is located in the middle of the top right side of the base plate 1. The device has a dual-axis hydraulic rod 8, with hinged seats at both ends. The hinged seats at both ends of the dual-axis hydraulic rod 8 are fixedly installed on the top surface of the base plate 1 and the bottom surface of the rotating plate 3, respectively. A water droplet balancer 5 is fixedly installed in the middle of the top surface of the rotating plate 3. The first display screen 61 and the second display screen 71 are both located on the left side of the water droplet balancer 5. The tilt angle of the rotating plate 3 is adjusted by the dual-axis hydraulic rod 8 until the water droplet balancer 5 shows that the rotating plate 3 is parallel to the horizontal plane. The distance between the rotating plate 3 and the horizontal plane is measured by the first laser radar 6, and the distance between the bottom surface of the rotating plate 3 and the horizontal plane is measured by the second laser radar 7. The corresponding values ​​are displayed on the first display screen 61 and the second display screen 71. If the values ​​displayed by the two are inconsistent, the tunnel is uneven due to partial settlement, and the conclusion that the bottom surface of the tunnel has partially settled can be drawn. Measurements can be taken anytime and anywhere, and the device is simple and convenient to use.

[0022] Example 2:

[0023] like Figure 1 , 2 As shown in Figure 4: Universal casters 9 with self-locking structures are fixedly installed at the four corners of the bottom surface of the base plate 1, and a handle 10 is fixedly installed on the right side of the top surface of the base plate 1. The universal casters 9 and the handle 10 facilitate the movement of this device.

[0024] Working principle and usage process of the utility model: This rapid detection device for subway tunnel settlement based on lidar is used by moving the device into the tunnel and then activating the dual-axis hydraulic rod 8 to adjust the tilt angle of the rotating plate 3 until the water droplet balance instrument 5 shows that the rotating plate 3 is parallel to the horizontal plane. Then, the first lidar 6 is activated to measure the distance between the rotating plate 3 and the lidar 7, and the second lidar 7 is activated to measure the distance between the bottom surface of the rotating plate 3 and the lidar 7. The corresponding values ​​are displayed on the first display screen 61 and the second display screen 71. If the values ​​displayed by the two are inconsistent, it means that the ground inside the tunnel is uneven due to partial settlement. Since the distance between the first lidar 6 and the second lidar 7 is a constant value, the difference in distance measured by the first lidar 6 and the second lidar 7 can be calculated. The tilt angle of the ground inside the tunnel can then be obtained by combining the Pythagorean theorem and the inverse cosine function.

[0025] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A rapid detection device for subway tunnel settlement based on laser radar, characterized in that: The utility model relates to a detection device for water droplet balance, including bottom plate (1), the top surface of bottom plate (1) is provided with the rotating plate (3), is provided with detection assembly on bottom plate (1) and rotating plate (3), the top surface of left end of bottom plate (1) is fixedly installed with the connecting plate (2) both sides in front and back, the left end of rotating plate (3) both sides in front and back are all set up installation slot (31), the lateral wall of installation slot (31) is fixedly installed with the rotating rod (4), the one end of rotating rod (4) away from rotating plate (3) is rotatably installed on the lateral wall of connecting plate (2); The detection assembly includes a first laser radar (6), a second laser radar (7), a first display screen (61), and a second display screen (71). The second laser radar (7) is fixedly installed on the middle of the top surface of the bottom plate (1). The first laser radar (6) is fixedly installed on the middle of the top surface of the left end of the bottom plate (1). The first display screen (61) and the second display screen (71) are both fixedly installed on the top surface of the rotating plate (3). The first laser radar (6) is electrically connected with the first display screen (61). The second laser radar (7) is electrically connected with the second display screen (71).

2. The rapid detection device for subway tunnel settlement based on laser radar according to claim 1, characterized in that: The middle of the top surface of the right end of the bottom plate (1) is provided with a double-shaft hydraulic rod (8). Both ends of the double-shaft hydraulic rod (8) are hingedly connected with hinged seats. The hinged seats at both ends of the double-shaft hydraulic rod (8) are fixedly installed on the top surface of the bottom plate (1) and the bottom surface of the rotating plate (3), respectively.

3. The rapid detection device for subway tunnel settlement based on laser radar according to claim 1, characterized in that: The middle of the top surface of the rotating plate (3) is fixedly installed with a water droplet balance (5). The first display screen (61) and the second display screen (71) are both arranged on the left side of the water droplet balance (5).

4. The rapid detection device for subway tunnel settlement based on laser radar according to claim 1, characterized in that: The bottom surface of the bottom plate (1) is fixedly installed with universal wheels (9) with self-locking structure at the four corners.

5. The rapid detection device for subway tunnel settlement based on laser radar according to claim 1, characterized in that: The right side of the top surface of the bottom plate (1) is fixedly installed with a handle (10).

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