Tunnel lining crack detection device

Abstract

The utility model relates to the technical field of tunnel lining crack detection devices, and discloses a tunnel lining crack detection device which comprises a base, a camera and a rotating assembly, driving wheels are symmetrically installed on the two sides of the bottom of the base, a handle and a control end are arranged on the left side of the top of the base, and a fixing cylinder and a built-in driving motor are fixed to the right side of the base. The protective barrel is connected with the fixed barrel through a rotating assembly, a hydraulic cylinder in the protective barrel is connected with an adjusting column, a camera and an illuminating lamp are installed on a column top rotating piece, the rotating assembly comprises a connecting ring and other components, 360-degree rotation is achieved through gear meshing, the height is adjusted in cooperation with the hydraulic cylinder, and tunnel lining can be covered in an all-dimensional mode; the control end is used for controlling movement and equipment operation, after the device moves to a proper position, the height angles of the camera and the illuminating lamp are adjusted, under the assistance of illumination, the camera collects lining surface images, data are transmitted to the control end for processing and storage, and various parameters of cracks are analyzed subsequently.

Description

Technical Field

[0001] This utility model relates to the technical field of tunnel lining crack detection devices, specifically a tunnel lining crack detection device. Background Technology

[0002] Tunnel lining cracks refer to cracks that appear in the lining structure (usually made of concrete or reinforced concrete) during tunnel construction. These cracks may be caused by geological conditions, construction techniques, material quality, environmental factors, etc., and may affect the structural safety and service life of the tunnel.

[0003] Traditional technologies suffer from drawbacks such as low detection efficiency, the need for manual segment-by-segment inspection, high manpower consumption, slow inspection speed, difficulty in completing long-distance tunnel inspections in a short time, limited detection range, inability to achieve 360-degree omnidirectional and flexible inspection at different heights, blind spots, poor imaging effect, insufficient lighting in dimly lit tunnel environments, difficulty in clearly acquiring crack images, and inability to accurately analyze crack parameters, all of which are detrimental to ensuring tunnel safety. This utility model is simple to operate and moves smoothly, eliminating the need for manual segment-by-segment inspection, greatly improving detection efficiency, saving labor costs, enabling the completion of long-distance tunnel inspections in a short time, achieving 360-degree omnidirectional and different height inspections, eliminating blind spots, improving the comprehensiveness of inspections, and ensuring clear imaging even in dimly lit tunnels, providing accurate data for tunnel maintenance and ensuring tunnel safety. Therefore, we propose a tunnel lining crack detection device. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides a tunnel lining crack detection device, which solves the aforementioned problems.

[0006] (II) Technical Solution

[0007] To achieve the above-mentioned objectives, this utility model provides the following technical solution: a tunnel lining crack detection device, comprising a base, a camera, and a rotating assembly. Symmetrical drive wheels are fixed on both sides of the bottom of the base. A handle and a control end are fixed on the top left side of the base. A fixed cylinder is fixed on the top right side of the base. A drive motor is installed inside the fixed cylinder. A rotating assembly is provided between the protective cylinder and the fixed cylinder, wherein the rotating assembly is fixed to the bottom end of the protective cylinder. A hydraulic cylinder is installed inside the protective cylinder. The piston shaft of the hydraulic cylinder is fixedly connected to the bottom end of an adjusting column, and the bottom end of the adjusting column is inserted into the inside of the protective cylinder. A rotating component is mounted on the top of the adjusting column via a rotating shaft, and a mounting platform is sleeved on the adjusting column. A servo motor is mounted on the top of the mounting platform, wherein the output shaft of the servo motor is fixedly connected to the rotating shaft. A camera and a lighting lamp are respectively installed on the rotating component. Lighting lamps are installed on the outer side of the camera and the end face of the rotating component.

[0008] Preferably, the rotating assembly includes a connecting ring, a rotating shaft, an external gear, an internal gear, and a connecting plate. A cross-shaped connecting frame is fixed inside the connecting ring. A rotating shaft hole is opened at the center of the connecting frame. The rotating shaft is inserted through the rotating shaft hole. The bottom end of the rotating shaft is fixedly connected to the output shaft of the drive motor.

[0009] Preferably, the inner wall of the cylindrical connecting ring is fixed with a track internal gear, and two symmetrical connecting plates are sleeved on the rotating shaft. The two connecting plates are provided with external gears that are symmetrically distributed inside. The external gears are connected to the connecting plates by a fixed rod. An internal gear is provided between the two external gears. The internal gear is sleeved on the rotating shaft. The external gear meshes with the internal gear and the track internal gear respectively.

[0010] Preferably, a handle and a control terminal are fixed to the top left side of the base, with the control terminal located inside the handle on both sides. A ring-shaped fixing cylinder is fixed to the top right side of the base, with an auxiliary ring fixed to the top surface of the fixing cylinder, and a drive motor is installed inside the fixing cylinder.

[0011] Preferably, an auxiliary groove is provided on the bottom end of the connecting ring, and the auxiliary ring at the top end of the fixed cylinder is inserted and rotated to fit the auxiliary groove at the bottom end of the connecting ring. Four positioning pins symmetrical about the central axis are fixed on the top end of the connecting ring, and four positioning grooves symmetrical about the central axis are provided on the bottom end of the protective cylinder. The positioning pins are inserted and connected to the positioning grooves. The top end of the connecting ring is fixedly connected to the bottom end of the protective cylinder with bolts, and the top end of the rotating shaft is fixedly connected to the inside of the bottom end of the protective cylinder.

[0012] Preferably, a hydraulic cylinder is fixedly installed at the bottom of the inner part of the protective cylinder. The top of the piston shaft of the hydraulic cylinder is fixedly connected to the bottom of the adjusting column. A rotating component is rotatably connected to the top of the adjusting column. A camera is installed on the top of the rotating component. Symmetrical lighting lamps are installed on both sides of the camera. A protective cover is fixed to the top of the rotating component by a bolt.

[0013] (III) Beneficial Effects

[0014] Compared with the prior art, the present invention provides a tunnel lining crack detection device, which has the following advantages:

[0015] 1. This tunnel lining crack detection device is easy to operate. The operator pushes the device with a handle and controls the drive wheel to move with the control terminal. It can move quickly in the tunnel. At the same time, the stable design of the base ensures smooth movement. It does not require much manpower assistance. During the detection process, there is no need for manual segment-by-segment inspection, which greatly improves the detection efficiency and saves a lot of labor costs, making it possible to complete the inspection of long-distance tunnels in a short time.

[0016] 2. In this tunnel lining crack detection device, the drive motor in the rotating component drives the rotating shaft, which rotates the connecting ring through a series of gear meshing, thereby driving the protective cylinder to rotate 360 ​​degrees. With the help of the hydraulic cylinder to adjust the height of the adjusting column, the camera and lighting can cover all heights and angles of the tunnel lining, avoiding blind spots and ensuring that every part of the tunnel lining can be detected, greatly improving the comprehensiveness of the detection.

[0017] 3. In the dimly lit tunnel environment, the lighting lamps on both sides of the camera and the end face of the rotating parts provide sufficient illumination, ensuring clear imaging conditions. The acquired image data is transmitted to the control terminal for processing. Subsequently, it can further analyze parameters such as the location, width, and length of the cracks, providing accurate data support for tunnel maintenance. This is conducive to the timely detection of minor cracks and the implementation of corresponding measures to ensure tunnel safety. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a schematic diagram showing the structural breakdown of this utility model;

[0020] Figure 3 This is a cross-sectional view of the structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the rotating component structure of this utility model;

[0022] Figure 5 This is a schematic diagram of the connecting ring structure of this utility model;

[0023] Figure 6 This is a schematic diagram of the connecting ring structure of this utility model.

[0024] In the diagram: 1. Base; 2. Handle; 3. Control end; 4. Fixed cylinder; 5. Drive motor; 6. Connecting ring; 7. Rotating shaft; 8. External gear; 9. Internal gear; 10. Connecting plate; 11. Protective cylinder; 12. Hydraulic cylinder; 13. Adjusting column; 14. Camera; 15. Lighting lamp; 16. Protective cover; 17. Track internal gear; 18. Connecting frame; 19. Servo motor; 20. Mounting platform. Detailed Implementation

[0025] 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.

[0026] Please see Figure 1-6 A tunnel lining crack detection device includes a base 1, a camera 14, and a rotating assembly. Symmetrical drive wheels are fixed to both sides of the bottom of the base 1. A handle 2 and a control end 3 are fixed to the top left side of the base 1. A fixed cylinder 4 is fixed to the top right side of the base 1. A drive motor 5 is installed inside the fixed cylinder 4. A rotating assembly is provided between a protective cylinder 11 and the fixed cylinder 4, wherein the rotating assembly is fixed to the bottom end of the protective cylinder 11. A hydraulic cylinder 12 is installed inside the protective cylinder 11. The piston shaft of the hydraulic cylinder 12 is fixedly connected to the bottom end of an adjusting column 13, and the bottom end of the adjusting column 13 is inserted into the interior of the protective cylinder 11. A rotating component is mounted on the top of the adjusting column 13 via a rotating shaft, and a mounting platform 20 is sleeved on the adjusting column 13. A servo motor 19 is mounted on the top of the mounting platform 20, wherein the output shaft of the servo motor 19 is fixedly connected to the rotating shaft. A camera 14 and a lighting lamp 15 are respectively provided on the rotating component. The lighting lamp 15 is installed on the outer side of the camera 14 and the end face of the rotating component.

[0027] Furthermore, the rotating assembly includes a connecting ring 6, a rotating shaft 7, an external gear 8, an internal gear 9, and a connecting plate 10. A cross-shaped connecting frame 18 is fixed inside the connecting ring 6. A rotating shaft hole is opened at the center of the connecting frame 18, and the rotating shaft 7 is inserted through the rotating shaft hole. The bottom end of the rotating shaft 7 is fixedly connected to the output shaft of the drive motor 5. The rotating assembly enables the camera 14 and the lighting lamp 15 to cover the tunnel lining in all directions, avoiding blind spots and improving the comprehensiveness of the detection.

[0028] Furthermore, a track internal gear 17 is fixed on the inner cylindrical wall of the connecting ring 6. Two symmetrical connecting plates 10 are sleeved on the rotating shaft 7, and external gears 8 are arranged symmetrically inside the two connecting plates 10. The external gears 8 are connected to the connecting plates 10 by a fixed rod. An internal gear 9 is provided between the two external gears 8. The internal gear 9 is sleeved on the rotating shaft 7. The external gears 8 mesh with the internal gears 9 and the track internal gear 17 respectively. The external gears 8 make circumferential motion along the track internal gear 17, thereby driving the connecting ring 6 and the protective cylinder 11 to rotate 360 ​​degrees, thereby reducing the blind spot.

[0029] Furthermore, a handle 2 and a control end 3 are fixed on the top left side of the base 1, with the control end 3 located inside the handle 2 on both sides. A ring-shaped fixing cylinder 4 is fixed on the top right side of the base 1, with an auxiliary ring fixed on the top surface of the fixing cylinder 4. A drive motor 5 is installed inside the fixing cylinder 4. Through their combined action, the device is easy to operate and runs stably, helping to complete the tunnel lining crack detection work.

[0030] Furthermore, an auxiliary groove is provided on the bottom end of the connecting ring 6. The auxiliary ring at the top of the fixed cylinder 4 is inserted and rotated into the auxiliary groove at the bottom end of the connecting ring 6. Four positioning pins symmetrical about the central axis are fixed on the top end of the connecting ring 6. Four positioning grooves symmetrical about the central axis are provided on the bottom end of the protective cylinder 11. The positioning pins are inserted and connected to the positioning grooves. The top end of the connecting ring 6 is fixedly connected to the bottom end of the protective cylinder 11 with bolts. The top end of the rotating shaft 7 is fixedly connected to the inside of the bottom end of the protective cylinder 11, so as to realize the stable operation of the device and the all-round detection function.

[0031] Furthermore, a hydraulic cylinder 12 is fixedly installed at the bottom of the inner part of the protective cylinder 11. The top of the piston shaft of the hydraulic cylinder 12 is fixedly connected to the bottom of the adjusting column 13. A rotating component is rotatably connected to the top of the adjusting column 13. A camera 14 is installed on the top of the rotating component. Symmetrical lighting lamps 15 are installed on both sides of the camera 14. A protective cover 16 is fixed to the top of the rotating component with a bolt. The cover can change with the height of the adjusting column 13 to meet the detection requirements of different heights of the tunnel lining, ensure stable operation, and help to accurately collect images of tunnel lining cracks.

[0032] Structural Description:

[0033] Base 1: Base 1 is the basic support structure of the detection device. Drive wheels are symmetrically installed on both sides of the bottom to ensure that the device can move smoothly on the tunnel surface. Other key components are fixed on the left and right sides of the top to provide a stable installation platform for the entire device.

[0034] Handle 2: Handle 2 is located on the top left of the base 1, making it easy for operators to hold and push the device to move inside the tunnel. It is a key component for realizing the displacement of the manually operated device and is simple and convenient to operate.

[0035] Control terminal 3: The control terminal 3 is located inside both sides of the handle 2. As the control core of the device, it can perform overall control of the device's start-up, stop, speed adjustment and other operating states to ensure that the testing work is carried out in an orderly manner.

[0036] Fixed cylinder 4: Fixed cylinder 4 is in the shape of a ring and is fixed on the top right side of the base 1. The drive motor 5 is installed inside. The auxiliary ring on the top surface cooperates with the connecting ring 6 to provide support and connection for the rotating components, so as to realize the coordinated operation between the components.

[0037] Drive motor 5: Drive motor 5 is placed inside the fixed cylinder 4 as a power source. Its output shaft is connected to the rotating shaft 7 to provide power to the rotating components, driving the connecting ring 6 and other components to rotate, thus meeting the requirements for switching detection angles.

[0038] Connecting ring 6: The connecting ring 6 has a cross-shaped connecting frame 18 inside, with an auxiliary groove at the bottom that cooperates with the auxiliary ring of the fixed cylinder 4, and a positioning post at the top that connects with the positioning groove of the protective cylinder 11. It achieves rotation through gear transmission and is a key connecting component of the rotating assembly.

[0039] Rotating shaft 7: The rotating shaft 7 is inserted into the shaft hole of the connecting bracket 18 in the center of the connecting ring 6. Its bottom end is fixed to the output shaft of the drive motor 5, and its top end is fixed to the inside of the bottom end of the protective cylinder 11. It rotates under the drive of the drive motor, causing the protective cylinder 11 to rotate.

[0040] External gear 8: The external gear 8 is installed in the connecting plate 10 on the rotating shaft 7 and is symmetrically distributed. It is connected to the connecting plate 10 through a fixing rod and meshes with the internal gear 9 and the track internal teeth 17 on the inner wall of the connecting ring 6 respectively to achieve circular motion and drive the connecting ring 6 to rotate.

[0041] Internal gear 9: Internal gear 9 is sleeved on rotating shaft 7 and located between two external gears 8. It meshes with external gears 8 and track internal gear 17, playing a key role in transmission and direction adjustment during gear transmission.

[0042] Connecting plate 10: The connecting plate 10 is sleeved on the rotating shaft 7 and is symmetrically distributed on the top and bottom. An external gear 8 is installed inside. Through the meshing of the external gear 8 with other gears, it achieves coordinated rotation with the rotating shaft 7 and transmits power.

[0043] Protective cylinder 11: The protective cylinder 11 is connected to the fixed cylinder 4 through a rotating assembly. A hydraulic cylinder 12 is installed inside. The bottom end is fixedly connected to the connecting ring 6 through a positioning post, positioning groove and bolts, to protect the internal components and realize 360-degree rotation detection.

[0044] Hydraulic cylinder 12: The hydraulic cylinder 12 is fixed inside the bottom of the protective cylinder 11. The top of the piston shaft is connected to the bottom of the adjusting column 13. The height of the adjusting column 13 is adjusted by the extension and retraction of the piston shaft to meet the detection requirements of different heights.

[0045] Adjusting column 13: The bottom end of the adjusting column 13 is inserted into the protective cylinder 11 and connected to the piston shaft of the hydraulic cylinder 12. The top is rotatably connected to a rotating part that mounts the camera 14 and the lighting lamp 15, so as to realize height adjustment and meet the requirements of detection angle adjustment.

[0046] Camera 14: Camera 14 is mounted on the rotating part at the top of the adjusting column 13. It is used to collect images of the tunnel lining surface and provide data support for crack detection. It is a key component for obtaining crack information.

[0047] Lighting lamp 15: Lighting lamp 15 is symmetrically installed on both sides of camera 14 and on the end face of rotating part to provide sufficient lighting in the dimly lit tunnel environment, ensuring that camera 14 can clearly capture cracks on the lining surface;

[0048] Protective cover 16: The protective cover 16 is fixed to the top of the rotating part by bolts, which protects the camera 14 and the lighting lamp 15 from damage by external factors during the detection process;

[0049] Track internal gear 17: Track internal gear 17 is fixed on the inner wall of the cylinder of the connecting ring 6 and meshes with the external gear 8. When the external gear 8 rotates, it guides the external gear 8 to make a circular motion, thereby driving the connecting ring 6 to rotate around the rotating shaft 7.

[0050] Connecting bracket 18: The connecting bracket 18 is fixed inside the connecting ring 6 in a cross shape, with a rotating shaft 7 inserted through the center of the rotating shaft 7, providing support and positioning for the rotating shaft 7 and ensuring stable operation of the rotating component.

[0051] Working Principle: The operator moves the entire inspection device inside the tunnel by holding the handle 2 on the top left of the base 1. Simultaneously, the control terminals 3 located inside the handle 2 on both sides allow for overall control of the device, such as starting, stopping, and adjusting the speed. Symmetrical drive wheels on both sides of the bottom of the base 1 provide stable support, ensuring the device moves smoothly on the tunnel floor. When a full-range inspection of the tunnel lining is required, the drive motor 5 starts, and its output shaft drives the rotating shaft 7 to rotate. As the rotating shaft 7 rotates, the two connecting plates 10 mounted on it rotate accordingly. The external gear 8 connected inside the connecting plate 10 via a fixed rod also rotates. Since the external gear 8 meshes with the internal gear 9 and the tracked internal teeth 17 on the inner wall of the connecting ring 6, under the action of the internal gear 9 and the tracked internal teeth 17, the external gear 8 rotates while also making circular motion along the tracked internal teeth 17, thereby driving the connecting ring 6 to rotate around the rotating shaft 7. The top of the connecting ring 6 is inserted into the protective cylinder 11 via a positioning post and positioning groove, and fixed with bolts. Therefore, the protective cylinder 11 will also rotate with the connecting ring 6, realizing the switching of the 360-degree all-round detection perspective. When detecting lining cracks at different heights, the control terminal 3 controls the hydraulic cylinder 12 inside the protective cylinder 11 to work. The piston axis of the hydraulic cylinder 12 moves upward or downward, and the adjusting column 13 fixedly connected to the top of the piston axis also rises or falls accordingly, thereby adjusting the height of the camera 14 and the lighting lamp 15 installed on the rotating part at the top of the adjusting column 13 to meet the detection requirements at different heights. When the device moves to the appropriate position and the camera 14 and the lighting lamp 15 are adjusted to the appropriate height and angle, the camera 14 starts to work to collect images of the tunnel lining surface. The lighting lamps 15 installed on both sides of the camera 14 and the end face of the rotating part provide sufficient illumination in the dark environment inside the tunnel, ensuring that the camera 14 can clearly capture the cracks on the lining surface. The collected image data is transmitted to the control terminal 3 for preliminary processing and storage, and can be further analyzed and processed to determine parameters such as the location, width, and length of the cracks.

[0052] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A tunnel lining crack detection device, comprising a base (1), a camera (14), and a rotating assembly, characterized in that: Symmetrical drive wheels are fixed on both sides of the bottom of the base (1). A handle (2) and a control end (3) are fixed on the top left side of the base (1). A fixed cylinder (4) is fixed on the top right side of the base (1). A drive motor (5) is installed inside the fixed cylinder (4). A rotating assembly is provided between the protective cylinder (11) and the fixed cylinder (4). The rotating assembly is fixed to the bottom end of the protective cylinder (11). A hydraulic cylinder (12) is installed inside the protective cylinder (11). The piston shaft of the hydraulic cylinder (12) is connected to the adjusting column ( 13) The bottom end is fixed with a connection, and the bottom end of the adjusting column (13) is inserted into the inside of the protective cylinder (11). The top of the adjusting column (13) is equipped with a rotating part through a rotating shaft, and a mounting platform (20) is sleeved on the adjusting column (13). A servo motor (19) is installed on the top of the mounting platform (20). The output shaft of the servo motor (19) is fixedly connected to the rotating shaft. A camera (14) and a lighting lamp (15) are respectively installed on the rotating part. A lighting lamp (15) is installed on the outside of the camera (14) and the end face of the rotating part.

2. The tunnel lining crack detection device according to claim 1, characterized in that: The rotating assembly includes a connecting ring (6), a rotating shaft (7), an external gear (8), an internal gear (9), and a connecting plate (10). A cross-shaped connecting frame (18) is fixed inside the connecting ring (6). A rotating shaft hole is opened at the center of the connecting frame (18), and the rotating shaft (7) is inserted through the rotating shaft hole. The bottom end of the rotating shaft (7) is fixedly connected to the output shaft of the drive motor (5).

3. The tunnel lining crack detection device according to claim 2, characterized in that: The inner cylindrical wall of the connecting ring (6) is fixed with a track internal gear (17). Two symmetrical connecting plates (10) are sleeved on the rotating shaft (7). The two connecting plates (10) are provided with axially symmetrically distributed external gears (8). The external gears (8) are connected to the connecting plates (10) by a fixing rod. An internal gear (9) is provided between the two external gears (8). The internal gear (9) is sleeved on the rotating shaft (7). The external gears (8) mesh with the internal gears (9) and the track internal gear (17) respectively.

4. The tunnel lining crack detection device according to claim 2, characterized in that: A handle (2) and a control terminal (3) are fixed on the top left side of the base (1), wherein the control terminal (3) is located inside the handle (2) on both sides. A ring-shaped fixing cylinder (4) is fixed on the top right side of the base (1). An auxiliary ring is fixed on the top surface of the fixing cylinder (4). A drive motor (5) is installed inside the fixing cylinder (4).

5. The tunnel lining crack detection device according to claim 4, characterized in that: An auxiliary groove is provided on the bottom end of the connecting ring (6). The auxiliary ring at the top of the fixed cylinder (4) is inserted and rotated to fit the auxiliary groove at the bottom end of the connecting ring (6). Four positioning pins symmetrical about the central axis are fixed at the top end of the connecting ring (6). Four positioning grooves symmetrical about the central axis are provided at the bottom end of the protective cylinder (11). The positioning pins are inserted and connected to the positioning grooves. The top end of the connecting ring (6) is fixedly connected to the bottom end of the protective cylinder (11) with bolts. The top end of the rotating shaft (7) is fixedly connected to the inside of the bottom end of the protective cylinder (11).

6. The tunnel lining crack detection device according to claim 5, characterized in that: A hydraulic cylinder (12) is fixedly installed at the bottom of the inner side of the protective cylinder (11). The top of the piston shaft of the hydraulic cylinder (12) is fixedly connected to the bottom of the adjusting column (13). A rotating part is rotatably connected to the top of the adjusting column (13). A camera (14) is installed on the top of the rotating part. Symmetrical lighting lamps (15) are installed on both sides of the camera (14). A protective cover (16) is fixed to the top of the rotating part by a bolt.

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