Automatic crack detection device for tunnel management and maintenance

Abstract

The utility model discloses an automatic crack detection device for tunnel management and maintenance, and relates to the technical field of tunnel crack detection. The driven wheel mechanisms are mounted at the two ends of the two sides of the walking body; the driving wheels are arranged in the middles of the two sides of the walking body, the driving wheels on the two sides are connected through a transmission shaft, a driven gear is installed on the outer wall of the transmission shaft, the driven gear is arranged in the walking body, a driving gear is installed at the rear end of the driven gear, a servo motor is arranged on one side of the driving gear, and the servo motor is arranged on the other side of the driving gear. And the output end of the servo motor is in transmission connection with the driving gear. The utility model can solve the problems that the walking needs to be driven manually and the manpower consumption is large in the using process in the prior art.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel crack detection, in particular to an automatic crack detection device for tunnel maintenance. Background Art

[0002] During long-term operation, tunnels are subject to vehicle vibration, temperature stress and temperature deformation caused by cement water heating, geological changes, etc., and cracks may appear in the secondary lining of the tunnel, which brings certain safety hazards to the operation of the tunnel. Therefore, it is necessary to conduct regular maintenance inspections on the tunnel to detect cracks in time and repair them to reduce safety hazards;

[0003] The existing tunnel crack inspection is mainly achieved through manual field survey and intelligent tunnel inspection vehicles. The intelligent tunnel inspection vehicle uses non-destructive testing to perform dynamic and continuous inspection of the tunnel at a speed of 30-80Km / h. It uses a truck as a vehicle-mounted platform and installs multiple sensor devices on the platform, such as POS positioning and attitude system, odometer, industrial camera, cross-section scanner, infrared thermal imager, COVI detector, wind speed and direction detector, illuminance meter, etc. The comprehensive data of the tunnel can be collected in one pass. Generators, power systems, air conditioners, acquisition servers, synchronous controllers, cabinets and other equipment are installed inside the cabin. The sensor bracket is located between the front of the vehicle and the cabin. The bracket can be automatically folded to protect the sensor. The various sensors installed on the bracket are used for data collection.

[0004] For crack detection in tunnels, the following methods are generally used: laser measurement, total station measurement, non-contact laser scanning and strain measurement. Utility Model Content

[0005] The utility model aims to provide an automatic crack detection device for tunnel maintenance, so as to solve the problem in the prior art that the device needs to be manually driven and walked during use, which consumes a lot of manpower.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions.

[0007] An automatic crack detection device for tunnel maintenance comprises a walking body, driving wheels are arranged on both sides of the walking body, and the driving wheels are used to enable the walking body to walk along a guide rail, and the guide rail is laid on the inner wall of the tunnel;

[0008] The walking body is provided with a servo motor for driving the driving wheel, and also includes a power supply module for powering the electrical equipment;

[0009] The upper cover plate or the lower cover plate of the walking body is provided with a crack detection mechanism, and the crack detection mechanism includes an industrial camera, a cross-sectional scanner, an infrared thermal imager, and a COVI detector.

[0010] Furthermore, the lower cover plate of the walking body is provided with a first support and a second support through a connecting seat, and the first support and the second support are oppositely provided with an emitter and a reflector of a COVI detector.

[0011] Furthermore, the driving wheels on the walking body are connected by a transmission shaft, and the transmission shaft is fixed to the side wall of the walking body through a bearing seat. The transmission shaft is driven by the driven gear meshing with the driving gear on the servo motor shaft.

[0012] Furthermore, the guide rail is configured as a square tube or a round tube.

[0013] Driven wheel mechanisms are also provided on both sides of the walking body, and the driven wheel mechanisms include driven wheels, T-shaped brackets, connecting frames and docking frames. Two driven wheels are provided, and the two driven wheels are connected by a T-shaped bracket. The connecting frame is installed below one end of the T-shaped bracket. The docking frame is fixedly connected to the walking body, and the docking frame is rotatably connected to the connecting frame through a rotating shaft.

[0014] The guide rail is arranged inside the tunnel through a ceiling frame and a fixing frame located above the ceiling frame, and a plurality of through holes are arranged on the fixing frame.

[0015] Furthermore, a control module is installed at the rear end of the walking body, a power module is installed at the front end of the walking body, a charging gun interface is provided at the front end of the walking body, and a power supply cable interface is provided on one side of the charging gun interface.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] The utility model adopts a ceiling-mounted guide rail and a walking body to drive the crack detection mechanism to automatically complete the crack detection work of tunnel maintenance. Compared with the traditional device, it does not require manual pushing, which reduces manpower consumption. Compared with ground pushing, the ceiling-mounted movement is not easily affected by environmental interference, which solves the problem that the existing device needs to be manually driven to walk during use, which consumes a lot of manpower. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a schematic diagram of the bottom structure of the utility model;

[0020] Figure 3 This is a schematic diagram of the internal top view structure of the utility model;

[0021] Figure 4 It is a partial structural schematic diagram of the crack detection mechanism of the utility model;

[0022] In the figure: 1. walking body; 2. driven wheel mechanism; 201. driven wheel; 202. T-shaped bracket; 203. connecting frame; 204. docking frame; 205. rotating shaft; 3. driving wheel; 4. guide rail; 5. ceiling frame; 6. fixing frame; 7. through hole; 8. connecting seat; 9. crack detection mechanism; 901. first support; 902. reflector; 903. second support; 904. protective shell; 905. transmitter; 10. lower cover; 11. power supply cable interface; 12. charging gun interface; 13. power module; 14. transmission shaft; 15. driven gear; 16. driving gear; 17. servo motor; 18. bearing seat; 19. control module. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0024] See also Figure 1-4 The utility model provides an embodiment: an automatic crack detection device for tunnel maintenance, including a walking body 1; and also including: a driven wheel mechanism 2, which is installed at both ends of both sides of the walking body 1; a driving wheel 3, which is arranged at the middle position of both sides of the walking body 1, and the driving wheels 3 on both sides are connected by a transmission shaft 14, a driven gear 15 is installed on the outer wall of the transmission shaft 14, and the driven gear 15 is arranged inside the walking body 1, and a driving gear 16 is installed at the rear end of the driven gear 15, and a servo motor 17 is arranged on one side of the driving gear 16, and the output end of the servo motor 17 is connected to the driving gear 16 by transmission; a guide rail 4, which is arranged below the driving wheel 3, and a ceiling frame 5 is installed on the outer wall of the guide rail 4. Further, the guide rail 4 is a straight pipe or a curved pipe, which can fit the layout of the tunnel, and a fixing frame 6 is installed on the upper end of the ceiling frame 5, and a plurality of through holes 7 are arranged on the fixing frame 6. The through holes 7 on the fixing frame 6 are fixed to the tunnel top by expansion bolts to realize the ceiling installation of the guide rail 4.

[0025] The crack detection mechanism 9 is installed on the walking body 1 through the upper cover plate or the lower cover plate 10, that is, the upper cover plate and the lower cover plate 10 can be directly swapped, thereby realizing detection above or below the walking body 1, avoiding the problem of being blocked by the shell of the walking body 1 itself.

[0026] When the utility model is in use, a signal can be sent from the terminal to the control module 19 in the walking body 1, and the servo motor 17 can be driven to operate through the control module 19, and the driving wheels 3 on both sides of the walking body 1 can be driven to rotate by the gear transmission mechanism, so that the device can move forward at a uniform speed along the guide rail 4. During the process, the industrial camera, cross-sectional scanner, infrared thermal imager, and COVI detector can work, and online image acquisition and transmission can be realized through the wireless transmission module to complete automated telemetry.

[0027] Combination Figure 1 and Figure 2 The driven wheel mechanism 2 of the utility model includes a driven wheel 201, a T-shaped bracket 202, a connecting frame 203 and a docking frame 204. Two driven wheels 201 are provided, and the two driven wheels 201 are connected by a T-shaped bracket 202. The connecting frame 203 is installed below one end of the T-shaped bracket 202. The docking frame 204 is fixedly connected to the walking body 1, and the docking frame 204 is rotatably connected to the connecting frame 203 through a rotating shaft 205. When the walking body 1 moves along the guide rail under the action of the driving wheel 3, the driven wheel mechanism 2 can play an auxiliary guiding effect and improve the movement accuracy. The connection between the driven wheel mechanism 2 and the walking body 1 adopts a rotating connection. When entering the bending section of the tunnel, it can rotate in accordance with the curved pipe to make the movement smoother.

[0028] Combination Figure 4 The crack detection mechanism 9 may also include a first support 901 and a second support 903, and the first support 901 and the second support 903 are arranged opposite to each other, a transmitter 902 of a COVI detector is installed on the inner side of the first support 901, a protective shell 904 is installed on the inner side of the second support 903, and a transmitter 905 of a COVI detector (YG-JTDL13) is installed on the outer side of the second support 903. After being fixed and aligned by a bracket, the highly focused light beam emitted by the optical component becomes a detection light beam, and the installation interval can be adjusted as necessary as needed. After the atmospheric channel attenuates the light model, the signal obtained by the receiver is processed by the processor as a measurement value, which provides a concentration visibility reference value for the detection quality during the tunnel flaw detection process.

[0029] Furthermore, both ends of the transmission shaft 14 are connected to the inner wall of the walking body 1 through the bearing seat 18 , and the bearing seat 18 can improve the rotation accuracy of the transmission shaft 14 .

[0030] See also Figure 3 A control module 19 is installed at the rear end of the walking body 1, a power module 13 is installed at the front end of the walking body 1, a charging gun interface 12 is provided at the front end of the walking body 1, and a power supply cable interface 11 is provided on one side of the charging gun interface 12. The walking body 1 can be powered by connecting the power supply cable to the power supply cable interface 11, or by setting a charging station with a charging gun at the end of the guide rail 4, and charging the internal power module 13 by relying on the charging gun interface 12 to realize the operation of the device.

[0031] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. An automated crack detection device for tunnel maintenance, comprising a walking body (1), characterized in that: Driving wheels (3) are provided on both sides of the walking body (1), and the driving wheels (3) are used to enable the walking body (1) to walk along a guide rail (4), and the guide rail (4) is laid on the inner wall of the tunnel; The walking body (1) is provided with a servo motor (17) for driving the driving wheel (3) inside, and also includes a power supply module (13) for supplying power to electrical equipment; The walking body (1) is provided with a crack detection mechanism (9) through an upper cover plate or a lower cover plate (10), and the crack detection mechanism (9) includes an industrial camera, a cross-sectional scanner, an infrared thermal imager, and a COVI detector.

2. The automatic crack detection device for tunnel maintenance according to claim 1, characterized in that: The lower cover plate (10) of the walking body (1) is provided with a first support (901) and a second support (903) via a connecting seat (8), and the emitter (905) and reflector (902) of the COVI detector are arranged opposite to the first support (901) and the second support (903).

3. The automatic crack detection device for tunnel maintenance according to claim 1, characterized in that: The driving wheels (3) on the walking body (1) are connected via a transmission shaft (14), and the transmission shaft (14) is fixed to the side wall of the walking body (1) via a bearing seat (18). The transmission shaft (14) is driven by a driven gear (15) meshing with a driving gear (16) on a rotating shaft of a servo motor (17).

4. The automatic crack detection device for tunnel maintenance according to claim 1, characterized in that: The guide rail (4) is configured as a square tube or a round tube.

5. The automatic crack detection device for tunnel maintenance according to claim 1, characterized in that: Driven wheel mechanisms (2) are also provided on both sides of the walking body (1), and the driven wheel mechanism (2) comprises a driven wheel (201), a T-shaped bracket (202), a connecting frame (203) and a docking frame (204), two driven wheels (201) are provided, and the two driven wheels (201) are connected via the T-shaped bracket (202), the connecting frame (203) is installed below one end of the T-shaped bracket (202), the docking frame (204) is fixedly connected to the walking body (1), and the docking frame (204) is rotatably connected to the connecting frame (203) via a rotating shaft (205).

6. The automatic crack detection device for tunnel maintenance according to claim 1, characterized in that: The guide rail (4) is arranged inside the tunnel via a ceiling frame (5) and a fixing frame (6) located above the ceiling frame (5), and a plurality of through holes (7) are arranged on the fixing frame (6).

7. The automatic crack detection device for tunnel maintenance according to claim 1, characterized in that: A control module (19) is installed at the rear end of the walking body (1), a power module (13) is installed at the front end of the walking body (1), a charging gun interface (12) is provided at the front end of the walking body (1), and a power supply cable interface (11) is provided on one side of the charging gun interface (12).

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