Portable laser scanning instrument for detecting crack width in high-pressure tunnel lining

Abstract

This utility model relates to the field of tunnel lining crack detection technology, and discloses a portable laser scanning detector for high-pressure tunnel lining crack width. The detector includes a housing with a mounting groove on the top wall. A camera is fixedly mounted on the top of the housing via the mounting groove. A mounting frame is fixedly connected to the middle of the inner wall of the housing, and a connecting groove is provided on the top of the mounting frame. A scanning module is fixedly mounted on the top of the housing via the connecting groove. A laser emitting module is fixedly connected to the left side of the bottom wall of the mounting frame, and an image processor is fixedly connected to the right side of the bottom wall of the housing. In this utility model, the reflected light from a high-precision laser beam is captured by the camera, and the image processor then analyzes the crack width, thereby achieving high-precision detection of crack width in high-pressure tunnel lining. The integrated design improves portability and makes it suitable for the complex environment of high-pressure tunnels.

Description

Technical Field

[0001] This utility model relates to the field of tunnel lining crack detection technology, and in particular to a portable laser scanning detector for crack width in high-pressure tunnel lining. Background Technology

[0002] With the rapid development of infrastructure construction, the safety and durability of high-pressure tunnels, as important water conservancy and transportation engineering facilities, have attracted much attention. As the main load-bearing structure of the tunnel, the lining is affected by factors such as water pressure or geological changes over a long period of time, leading to cracks. The width of the crack is an important indicator for assessing the health status of the lining structure. In recent years, laser scanning technology has been gradually applied to crack detection due to its high precision and non-contact measurement characteristics. However, existing technologies still have problems such as poor portability and insufficient environmental adaptability in practical applications, making it difficult to meet the detection needs in the complex environment of high-pressure tunnels.

[0003] A search revealed Chinese Patent Publication No. CN219223671U, which discloses a laser plane detector, specifically relating to the field of laser plane leveling instruments. The device includes a worktable, a laser, and a reflector. The laser is fixedly connected to the top of the worktable, and the reflector is located on one side of the laser. A threaded slide rod is slidably connected inside the worktable. A threaded rotating sleeve is threadedly connected to the outer wall of the threaded slide rod, and a transmission gear is fixedly connected to the outer wall of the threaded rotating sleeve. A movable rack meshes with one side of the transmission gear, and a movable rod is fixedly connected to one side of the movable rack. A pushing block is fixedly connected to the top of the movable rod, and a sealing plate is fixedly connected to the top of the pushing block. This invention, by incorporating the threaded rotating sleeve and sealing plate, allows the threaded slide rod to cause the threaded rotating sleeve to rotate when the object to be measured is placed on the worktable. This rotation causes the transmission gear to rotate, ultimately automatically opening the waterproof box when the laser is in operation, solving the problem of water accumulation on the surface of the laser affecting the detection data when placed in humid areas. However, in practical use, while the device performs the actual detection work using the laser, the existing equipment is relatively large and difficult to use in narrow tunnels, thus reducing its adaptability. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a portable laser scanning detector for crack width in high-pressure tunnel lining, aiming to improve the problem that the existing equipment is too large and difficult to use in narrow tunnels, thus reducing the adaptability of the equipment.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a portable laser scanning detector for crack width in high-pressure tunnel lining, comprising a housing, an mounting arc groove on the top wall of the housing, a camera fixedly mounted on the top of the housing via the mounting arc groove, a mounting frame fixedly connected to the middle of the inner wall of the housing, a connecting groove on the top of the mounting frame, a scanning module fixedly mounted on the top of the housing via the connecting groove, a laser emitting module fixedly connected to the left side of the bottom wall of the mounting frame, an image processor fixedly connected to the right side of the bottom wall of the housing, a display screen fixedly mounted on the middle of the right side of the housing, a transparent protective shell rotatably connected to the middle of the front side of the housing, and a heat dissipation mechanism provided on the bottom left side of the housing.

[0006] The above technical solution enables the laser beam to be reflected onto the lining surface by a scanning module under the emission of a high-precision beam. The reflected light generated at the crack can be captured by a camera, and the image processor can then analyze the crack width to detect the crack width of the high-pressure tunnel lining. This improves detection efficiency and safety. Finally, the integrated design enhances the portability of the device, making it easy to use in narrow tunnels.

[0007] As a further description of the above technical solution:

[0008] The heat dissipation mechanism includes a variable frequency fan. The bottom wall of the variable frequency fan is fixedly connected to the bottom left side of the outer casing. A filter column is fixedly connected to the front left side of the variable frequency fan. A conveying pipe is connected to the rear left side of the variable frequency fan. A drying box is connected to the top of the conveying pipe. An adsorption sponge plate is slidably connected inside the drying box. A connecting pipe is connected to the top wall of the drying box. An annular spray pipe is fixedly connected to the front end of the connecting pipe. The rear side of the annular spray pipe is fixedly connected to the rear side of the inner wall of the outer casing. Two heat dissipation holes are opened on both the left and right sides of the front side of the outer casing.

[0009] The above technical solution enables the filter column to filter impurities from the drawn air when the variable frequency fan is started, and the adsorption sponge plate to adsorb water vapor. The filtered and dried airflow is then output through the connecting pipe and the annular nozzle, which reduces the impact of heat accumulation on equipment operation and improves the service life of the device.

[0010] As a further description of the above technical solution:

[0011] The heat dissipation mechanism also includes a rubber ring, the inner wall of which is fixedly connected to the top of the outer wall of the delivery pipe.

[0012] The above technical solution enables the connection at the top of the outer wall of the delivery pipe to be protected by the rubber ring connection.

[0013] As a further description of the above technical solution:

[0014] The camera is equipped with a waterproof shell on its top, and the rear side of the bottom wall of the waterproof shell is rotatably connected to the top of the outer shell via a hinge.

[0015] The above technical solution enables waterproof protection for the top of the camera by connecting the waterproof shell.

[0016] As a further description of the above technical solution:

[0017] A control switch is fixedly connected to the top left side of the housing. The control switch is electrically connected to the camera, scanning module, image processor, laser emitting module, display screen and variable frequency fan.

[0018] The above technical solution enables the device to be turned on and off by connecting the control switch.

[0019] As a further description of the above technical solution:

[0020] A handle is fixedly connected to the rear side of the outer casing, and a rubber sleeve is fixedly connected to the middle of the handle.

[0021] The above technical solution enables convenient carrying of the equipment by connecting the handle and the rubber sleeve.

[0022] As a further description of the above technical solution:

[0023] Two connecting seats are fixedly connected to the bottom of both the left and right sides of the outer casing, and a support column is fixedly connected inside the connecting seat.

[0024] The above technical solution, through the connection between the connecting seat and the support column, can improve the stability of the device during use.

[0025] As a further description of the above technical solution:

[0026] The front side of the transparent protective shell has a smooth design, and the horizontal height of the image processor is the same as that of the laser emitting module.

[0027] The above technical solution enables the strength of the protective shell to be improved by adopting a smooth design on the front side of the transparent protective shell.

[0028] This utility model has the following beneficial effects:

[0029] 1. In this utility model, the laser emitting module is used to form a high-precision beam, and then the laser beam is reflected onto the lining surface by the scanning module. The camera is used to capture the reflected light of the laser beam at the crack, and then the image processor completes the analysis of the crack width, thereby realizing high-precision detection of the crack width of the high-pressure tunnel lining, improving detection efficiency and safety, reducing manual intervention, and improving portability through integrated settings, making it suitable for the complex environment of high-pressure tunnels.

[0030] 2. In this utility model, by starting the variable frequency fan, impurity particles are filtered through the filter column. Then, the airflow passes through the adsorption sponge plate inside the drying box to adsorb water vapor. The filtered and dried airflow is output through the connecting pipe and the annular nozzle, which improves the heat dissipation inside the device and reduces the situation where heat accumulation affects the operation of the equipment. The air after heat exchange is discharged through multiple heat dissipation holes. Attached Figure Description

[0031] Figure 1 A three-dimensional view of the portable high-pressure tunnel lining crack width laser scanning detector proposed in this utility model;

[0032] Figure 2 This is a side view of the portable high-pressure tunnel lining crack width laser scanning detector proposed in this utility model;

[0033] Figure 3 This is a cross-sectional view of the outer casing of the portable high-pressure tunnel lining crack width laser scanning detector proposed in this utility model.

[0034] Figure 4 This is an exploded view of the mounting frame of the portable high-pressure tunnel lining crack width laser scanning detector proposed in this utility model;

[0035] Figure 5 This is a schematic diagram of the heat dissipation mechanism of the portable high-pressure tunnel lining crack width laser scanning detector proposed in this utility model.

[0036] Legend:

[0037] 1. Outer shell; 2. Heat dissipation mechanism; 201. Variable frequency fan; 202. Filter column; 203. Delivery pipe; 204. Drying box; 205. Adsorption sponge board; 206. Connecting pipe; 207. Annular nozzle; 208. Rubber ring; 209. Heat dissipation hole; 3. Mounting arc groove; 4. Camera; 5. Fixing bracket; 6. Connecting groove; 7. Scanning module; 8. Image processor; 9. Laser emission module; 10. Display screen; 11. Control switch; 12. Transparent protective shell; 13. Waterproof shell; 14. Connecting seat; 15. Support column; 16. Handle; 17. Rubber sleeve. Detailed Implementation

[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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.

[0039] Reference Figure 1 , Figure 3 and Figure 4 This utility model provides an embodiment of a portable high-pressure tunnel lining crack width laser scanning detector, comprising a housing 1, an mounting groove 3 on the top wall of the housing 1, a camera 4 fixedly mounted on the top of the housing 1 via the mounting groove 3, the camera 4 being able to capture the reflected light of the laser beam, a fixing frame 5 fixedly connected to the middle of the inner wall of the housing 1, a connecting groove 6 on the top of the fixing frame 5, a scanning module 7 fixedly mounted on the top of the housing 1 via the connecting groove 6, the scanning module 7 being able to reflect the laser beam, a laser emitting module 9 fixedly connected to the left side of the bottom wall of the fixing frame 5, an image processor 8 fixedly connected to the right side of the bottom wall of the housing 1, and a display screen 10 fixedly mounted on the middle of the right side of the housing 1, so that when the laser emitting module 9 is activated, a high-precision beam can be formed, thereby analyzing the crack width through the image processor 8, and then displaying the detection results in real time through the display screen 10; a transparent protective shell 12 is rotatably connected to the middle of the front side of the housing 1, and a heat dissipation mechanism 2 is provided at the bottom left side of the housing 1;

[0040] Specifically, by activating the laser emission module 9, a high-precision laser beam can be generated. Subsequently, under the processing of the scanning module 7, the laser beam is emitted onto the lining surface to generate reflected light. The camera 4 can capture the reflected light signal at the crack. The image processor 8 then analyzes these signals, calculates the width of the crack, and transmits this data to the display screen 10 to display the detection results in real time. This enables high-precision detection of the width of cracks in the lining of high-pressure tunnels, improving detection efficiency and safety. Finally, through integrated design, the overall portability of the device is improved, making it suitable for use in the complex environment of high-pressure tunnels, and it can be operated smoothly even in narrow tunnels.

[0041] Reference Figure 1 , Figure 2 and Figure 5The heat dissipation mechanism 2 includes a variable frequency fan 201. The bottom wall of the variable frequency fan 201 is fixedly connected to the bottom left side of the outer casing 1. A filter column 202 is fixedly connected to the front left side of the variable frequency fan 201. The filter column 202 can filter the drawn air. The rear left side of the variable frequency fan 201 is connected to a conveying pipe 203. The top of the conveying pipe 203 is connected to a drying box 204. An adsorption sponge plate 205 is slidably connected inside the drying box 204. The filtered airflow can be dried by passing through the adsorption sponge plate 205. The top wall of the drying box 204 is connected to a connecting pipe 206. An annular nozzle 207 is fixedly connected to the front end of the connecting pipe 206. The rear side of the annular nozzle 207 is fixedly connected to the rear side of the inner wall of the outer casing 1. The filtered and dried airflow can be sprayed out through the annular nozzle 207 to improve the heat dissipation effect. Two heat dissipation holes 209 are opened on the left and right sides of the front side of the outer casing 1.

[0042] Specifically, by starting the variable frequency fan 201, outside air can be effectively drawn in, and impurities in the air are filtered through the filter column 202, thus preventing dust particles from interfering with the equipment inside the device. The filtered air enters the drying box 204, where moisture in the air is absorbed by the adsorption sponge plate 205, thereby achieving the purpose of drying the air and preventing damage to the equipment that moisture may cause, thus ensuring the stable operation of the equipment. The airflow that has been filtered and dried will be output through the annular nozzle 207, avoiding the negative impact of heat on the working performance of the equipment. The air that has undergone heat exchange will be discharged through multiple heat dissipation holes 209, improving the heat dissipation effect inside the device and ensuring the efficient operation of the equipment.

[0043] Reference Figure 1 , Figure 4 and Figure 5 The heat dissipation mechanism 2 also includes a rubber ring 208, the inner wall of which is fixedly connected to the top of the outer wall of the conveying pipe 203; a waterproof shell 13 is provided on the top of the camera 4, and the rear side of the bottom wall of the waterproof shell 13 is rotatably connected to the top of the outer shell 1 via a hinge; a control switch 11 is fixedly connected to the top left side of the outer shell 1, and the control switch 11 is electrically connected to the camera 4, the scanning module 7, the image processor 8, the laser emitting module 9, the display screen 10 and the variable frequency fan 201 respectively;

[0044] Specifically, the rubber ring 208 can protect the top connection of the delivery pipe 203, the waterproof shell 13 can provide waterproof protection for the top of the camera 4, and the control switch 11, which is electrically connected to the camera 4, the scanning module 7, the image processor 8, the laser emitting module 9, the display screen 10 and the variable frequency fan 201 respectively, can turn the equipment on and off.

[0045] Reference Figure 1 , Figure 2 and Figure 5 A handle 16 is fixedly connected to the rear side of the outer shell 1, and a rubber sleeve 17 is fixedly connected to the middle of the handle 16; two connecting seats 14 are fixedly connected to the bottom of the left and right sides of the outer shell 1, and a support column 15 is fixedly connected inside the connecting seat 14; the front side of the transparent protective shell 12 adopts a smooth design, and the horizontal height of the image processor 8 is the same as the horizontal height of the laser emitting module 9.

[0046] Specifically, the rubber sleeve 17 improves the anti-slip effect when using the handle 16, the connecting seat 14 and the support column 15 improve the stability of the device during operation, and the smooth design on the front side of the transparent protective shell 12 improves the service life of the transparent protective shell 12.

[0047] Working principle: When in use, the laser emitting module 9 is activated to form a high-precision beam. Then, under the processing of the scanning module 7, the laser beam is reflected onto the lining surface, causing it to reflect light onto the cracks. The camera 4 can then capture the reflected light at the cracks, and the image processor 8 can analyze the crack width and transmit it to the display screen 10, enabling real-time display of the detection results. This achieves high-precision detection of the crack width of high-pressure tunnel lining, improving detection efficiency and safety. Finally, the integrated design improves the overall portability of the device, making it suitable for the complex environment of high-pressure tunnels and enabling its use in narrow tunnels.

[0048] Furthermore, by starting the variable frequency fan 201, it draws in outside air through the filter column 202 and filters out impurity particles, preventing dust particles from interfering with the equipment inside the device. Subsequently, the airflow passes through the adsorption sponge plate 205 inside the drying box 204 to adsorb moisture, achieving the purpose of drying and preventing moisture from damaging the equipment. Then, the filtered and dried airflow is output through the annular nozzle 207, which reduces the impact of heat accumulation on equipment operation. The air after heat exchange is discharged through multiple heat dissipation holes 209, improving the heat dissipation effect inside the device.

[0049] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A portable laser scanning detector for crack width in high-pressure tunnel lining, comprising a housing (1), characterized in that: The top wall of the outer shell (1) is provided with an installation arc groove (3). A camera (4) is fixedly installed on the top of the outer shell (1) through the installation arc groove (3). A fixing frame (5) is fixedly connected to the middle of the inner wall of the outer shell (1). A connecting groove (6) is provided on the top of the fixing frame (5). A scanning module (7) is fixedly installed on the top of the outer shell (1) through the connecting groove (6). A laser emitting module (9) is fixedly connected to the left side of the bottom wall of the fixing frame (5). An image processor (8) is fixedly connected to the right side of the bottom wall of the outer shell (1). A display screen (10) is fixedly installed in the middle of the right side of the outer shell (1). A transparent protective shell (12) is rotatably connected to the middle of the front side of the outer shell (1). A heat dissipation mechanism (2) is provided at the bottom left side of the outer shell (1).

2. The portable laser scanning detector for crack width in high-pressure tunnel lining according to claim 1, characterized in that: The heat dissipation mechanism (2) includes a variable frequency fan (201). The bottom wall of the variable frequency fan (201) is fixedly connected to the bottom left side of the outer shell (1). A filter column (202) is fixedly connected to the front left side of the variable frequency fan (201). A conveying pipe (203) is connected to the rear left side of the variable frequency fan (201). A drying box (204) is connected to the top of the conveying pipe (203). An adsorption sponge plate (205) is slidably connected inside the drying box (204). A connecting pipe (206) is connected to the top wall of the drying box (204). An annular nozzle (207) is fixedly connected to the front end of the connecting pipe (206). The rear side of the annular nozzle (207) is fixedly connected to the rear side of the inner wall of the outer shell (1). Two heat dissipation holes (209) are opened on the left and right sides of the front side of the outer shell (1).

3. The portable laser scanning detector for crack width in high-pressure tunnel lining according to claim 2, characterized in that: The heat dissipation mechanism (2) also includes a rubber ring (208), the inner wall of which is fixedly connected to the top of the outer wall of the delivery pipe (203).

4. The portable laser scanning detector for crack width in high-pressure tunnel lining according to claim 1, characterized in that: The top of the camera (4) is provided with a waterproof shell (13), and the rear side of the bottom wall of the waterproof shell (13) is rotatably connected to the top of the outer shell (1) by a hinge.

5. The portable laser scanning detector for crack width in high-pressure tunnel lining according to claim 2, characterized in that: A control switch (11) is fixedly connected to the top left side of the outer casing (1). The control switch (11) is electrically connected to the camera (4), scanning module (7), image processor (8), laser emitting module (9), display screen (10) and variable frequency fan (201).

6. The portable laser scanning detector for crack width in high-pressure tunnel lining according to claim 1, characterized in that: A handle (16) is fixedly connected to the rear side of the outer shell (1), and a rubber sleeve (17) is fixedly connected to the middle part of the handle (16).

7. The portable laser scanning detector for crack width in high-pressure tunnel lining according to claim 1, characterized in that: Two connecting seats (14) are fixedly connected to the bottom of the left and right sides of the outer shell (1), and a support column (15) is fixedly connected inside the connecting seat (14).

8. The portable laser scanning detector for crack width in high-pressure tunnel lining according to claim 1, characterized in that: The front side of the transparent protective shell (12) is designed to be smooth, and the horizontal height of the image processor (8) is the same as that of the laser emitting module (9).

Images