Tunnel appearance detection equipment

Abstract

The invention discloses tunnel appearance detection equipment, which comprises a walking base, a rotary driving device, a detection device and a control device, wherein the walking base is provided with the rotary driving device; a first arc-shaped shell and a second arc-shaped shell, the first arc-shaped shell and the second arc-shaped shell are both slidably connected with a driving ring, and the driving ring is provided with a detection unit used for shooting a detection area on the surface of the tunnel; the first transmission shaft is rotationally connected with a driving gear, and the first transmission shaft is fixedly connected with a stroke gear; the rotating end of the rotating driving device is connected with a second transmission shaft, the second transmission shaft is fixedly connected with a driving belt wheel, the driving gear is coaxially provided with a driven belt wheel, a synchronous belt is arranged between the driving belt wheel and the driven belt wheel in a sleeved mode, and the second transmission shaft is fixedly connected with a transmission gear. According to the tunnel appearance detection equipment, the two detection units rotate in the circumferential direction of the driving ring in the opposite directions at the positions of the front side and the rear side of the walking base correspondingly, detection is comprehensive, and the detection accuracy is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of tunnel engineering detection, and in particular to a tunnel surface detection device. Background Art

[0002] Tunnels are important infrastructure for highway and rail transit. With the long-term operation of tunnels, tunnel structures made mainly of concrete materials have surface defects such as water leakage, hollowing, cracks, and spalling, as well as deformation of tunnel sections. Therefore, it is necessary to conduct surface inspections of tunnels regularly. At present, tunnel inspections are mostly based on manual inspections, which have problems such as low efficiency, poor reliability, and large detection errors. In the prior art, there are some detection devices installed on a carrier vehicle to achieve the purpose of walking along the length of the tunnel and detecting the surface defects of the tunnel. A single detection device is used for detection, which only adapts to the changes in the contour of the top wall of the tunnel. Its detection range is limited, and it is difficult to fully and accurately detect the surface defects of the tunnel. Summary of the invention

[0003] The purpose of the present invention is to provide a tunnel surface detection device designed to solve the deficiencies of the above-mentioned technology. The two detection units rotate in opposite directions along the circumference of the drive ring at the front and rear sides of the walking base, respectively, so that the detection is more comprehensive and the accuracy of the detection is improved.

[0004] In order to solve the above technical problems, the technical solution of the present invention is: a tunnel surface detection device, comprising:

[0005] A walking base, the walking base is provided with docking grooves and travel grooves arranged at intervals, a first fixing frame is arranged on the front side of the walking base, a second fixing frame is arranged on the rear side of the walking base, and a telescopic driving device and a rotating driving device arranged on the second fixing frame;

[0006] A first arcuate shell and a second arcuate shell are arranged oppositely and coaxially, the first arcuate shell is inserted into the docking groove, the second arcuate shell is slidably connected to the travel groove, the telescopic end of the telescopic drive device is connected to the second arcuate shell, the end surfaces of the first arcuate shell and the second arcuate shell are both opened, and the first arcuate shell and the second arcuate shell are both slidably connected with a driving ring, the driving ring can rotate around its axis, and the driving ring is provided with a detection unit for photographing a detection area on the tunnel surface;

[0007] A first transmission shaft and a second transmission shaft are arranged at intervals, the first transmission shaft passes through the hollow areas of the two drive rings, and the two ends of the first transmission shaft are rotatably connected to the first fixing frame and the second fixing frame respectively, the first transmission shaft is rotatably connected to a driving gear at a position relative to the first arc-shaped shell, the outer peripheral side wall of the driving gear is meshed with the inner wall of the drive ring close to it, and the first transmission shaft is fixedly connected to a travel gear at a position relative to the second arc-shaped shell, the outer peripheral side wall of the travel gear extends along the length direction of the travel groove, and the outer peripheral side wall of the travel gear is meshed with the inner wall of the drive ring close to it;

[0008] The rotating end of the rotary drive device is connected to the second transmission shaft, the second transmission shaft passes through the hollow areas of the two drive rings, and its two ends are rotatably connected to the first fixed frame and the second fixed frame respectively, the second transmission shaft is fixedly connected to a driving pulley at a position relative to the first arc shell, the driving gear is coaxially provided with a driven pulley, a synchronous belt is sleeved between the driving pulley and the driven pulley, the second transmission shaft is fixedly connected to a transmission gear at a position relative to the second arc shell, and the outer peripheral side wall of the transmission gear is meshed with the outer peripheral side wall of the travel gear.

[0009] Preferably, the inner wall of the first arc-shaped shell and the inner wall of the second arc-shaped shell are both provided with a guide track groove extending along the circumference of the drive ring, and the outer wall of the drive ring is convexly provided with a guide ring, the detection unit is fixedly connected to the guide ring, and the guide ring is rotatably connected in the guide track groove.

[0010] Preferably, an outer protruding toothed ring portion is coaxially arranged on the inner wall of the driving ring, and the two toothed ring portions are respectively meshed with the outer peripheral side wall of the driving gear and the outer peripheral side wall of the travel gear.

[0011] Preferably, both ends of the travel gear are formed with limit rings, and the inner side wall of the limit ring is in abutment with the gear ring portion adjacent thereto.

[0012] Preferably, a plurality of gear holes evenly distributed in a circular array are provided on the side wall of the drive ring close to the gear ring part, and the first arc shell and the second arc shell are both provided with ball screws, and the steel balls of the ball screws extend into the guide track grooves and are plugged into and matched with the corresponding gear holes.

[0013] Preferably, the outer wall of the first arc-shaped shell and the outer wall of the second arc-shaped shell are each provided with at least one alignment piece, the inner wall of the docking groove is provided with an alignment groove for the alignment piece to be inserted, and the inner wall of the travel groove is provided with a sliding groove for the alignment piece to be slidably connected.

[0014] Preferably, a connecting frame is fixedly connected to the second arc-shaped shell, a connecting plate is fixedly connected to the connecting frame at a position relative to the axis of the driving ring, and the connecting plate is fixedly connected to the driving end of the telescopic driving device.

[0015] Preferably, two guide rods are symmetrically arranged on the connecting frame, and a guide sleeve for sliding connection of the guide rods is arranged on the second fixing frame.

[0016] Preferably, the rotation drive device is a stepping motor, the telescopic drive device is an electric cylinder, a controller is provided on the walking base, and the rotation drive device and the telescopic drive device are both electrically connected to and controlled by the controller.

[0017] Preferably, the two detection units are each provided with a sensing device electrically connected to the controller, and the opposite sides of the first arc shell and the second arc shell are each provided with a driving part for sensing by the sensing device. When the sensing side of the sensing device corresponds to the driving part, the sensing device triggers a signal, and under the control of the controller, the rotating end of the rotating drive device switches to the opposite direction for rotation.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. Driven by the rotary drive device, the two drive rings rotate in opposite directions along their circumferences, so that the two detection units rotate in opposite directions along the circumferences of the drive rings at the front and rear sides of the walking base, respectively. The detection unit located at the rear side observes the tunnel from another direction to supplement the area that the detection unit located at the front side cannot cover, ensuring that each detection area on the tunnel surface can be effectively detected and photographed, and the detection is more comprehensive. Through repeated detection and photography of the detection units on the front and rear sides, the same detection area on the tunnel surface can be observed multiple times, thereby improving the accuracy of the detection.

[0020] 2. The first arc shell is inserted into the docking groove to position the first arc shell on the walking base, and the second arc shell is slidably connected in the travel groove. Driven by the telescopic drive device, the second arc shell translates along the length direction of the travel groove, thereby adjusting the distance between the two drive rings, and then adjusting the distance between the two detection units to change the shooting angle, so as to better adapt to different tunnel structures and detection areas, and has good applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The structure of the detection device in the embodiment is shown in FIG. Figure 1 ;

[0022] Figure 2 The structure of the detection device in the embodiment is shown in FIG. Figure 2 ;

[0023] Figure 3 is a cross-sectional view of the detection device in the embodiment Figure 1 ;

[0024] Figure 4 is a cross-sectional view of the detection device in the embodiment Figure 2 .

[0025] In the figure: 1, walking base; 101, front headlight; 102, rear headlight; 2, docking groove; 201, alignment groove; 3, travel groove; 301, slide groove; 4, first fixed frame; 5, second fixed frame; 501, guide sleeve; 6, telescopic drive device; 7, rotation drive device; 8, first arc shell; 9, second arc shell; 10, drive ring; 1001, guide ring; 1002, gear ring part; 1003, gear hole; 11, detection Unit; 12. First transmission shaft; 13. Driving gear; 1301. Driven pulley; 14. Travel gear; 1401. Limiting ring; 15. Second transmission shaft; 16. Active pulley; 17. Transmission gear; 18. Synchronous belt; 19. Guide track groove; 20. Ball screw; 21. Connecting frame; 2101. Connecting plate; 2102. Guide rod; 22. Controller; 23. Induction device; 24. Driving unit; 25. Alignment member. DETAILED DESCRIPTION

[0026] The present invention will be further described below by way of embodiments in conjunction with the accompanying drawings.

[0027] refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 A tunnel surface detection device includes a traveling base 1, a first arc-shaped shell 8, a second arc-shaped shell 9, a first transmission shaft 12 and a second transmission shaft 15. The traveling base 1 is a rail vehicle. The front and rear sides of the traveling base 1 are respectively provided with a front lamp 101 and a rear lamp 102 for lighting the tunnel.

[0028] The walking base 1 is provided with a docking groove 2 and a travel groove 3 arranged at intervals, the docking groove 2 is close to the front side of the walking base 1, and the travel groove 3 is close to the rear side of the walking base 1. A first fixed frame 4 is arranged on the front side of the walking base 1, and a second fixed frame 5 is arranged on the rear side of the walking base 1, as well as a telescopic drive device 6 and a rotation drive device 7 arranged on the second fixed frame 5. The telescopic drive device 6 is an electric cylinder, and the rotation drive device 7 is a stepping motor. A controller 22 is arranged on the walking base 1, and the rotation drive device 7 and the telescopic drive device 6 are both electrically connected to and controlled by the controller 22.

[0029] The first arc shell 8 and the second arc shell 9 are arranged oppositely and coaxially, and the outer wall of the first arc shell 8 and the outer wall of the second arc shell 9 are both provided with at least one alignment piece 25, and the inner wall of the docking groove 2 is provided with an alignment groove 201 for the alignment piece 25 to be inserted, and the first arc shell 8 is inserted into the docking groove 2 so as to position the first arc shell 8 on the walking base 1; the inner wall of the travel groove 3 is provided with a sliding groove 301 for the alignment piece 25 to be slidably connected, and the second arc shell 9 is slidably connected in the travel groove 3 so that the second arc shell 9 can be translated relative to the walking base 1 along the length direction of the travel groove 3.

[0030] The end faces of the first arc shell 8 and the second arc shell 9 are both opened, and the first arc shell 8 and the second arc shell 9 are both slidably connected with a drive ring 10, the drive ring 10 can rotate around its axis, and the drive ring 10 is provided with a detection unit 11 for photographing the detection area of ​​the tunnel surface, and the detection unit 11 can be a detection camera. Preferably, the inner wall of the first arc shell 8 and the inner wall of the second arc shell 9 are both provided with a guide track groove 19 extending along the circumference of the drive ring 10, and the outer wall of the drive ring 10 is convexly provided with a guide ring 1001, the detection unit 11 is fixedly connected to the guide ring 1001, and the detection unit 11 is fixedly connected to the guide ring 1001, and the guide ring 1001 is rotatably connected in the guide track groove 19 to guide the rotation of the drive ring 10.

[0031] The first transmission shaft 12 and the second transmission shaft 15 are arranged at intervals, the first transmission shaft 12 passes through the hollow areas of the two drive rings 10, and the two ends thereof are rotatably connected to the first fixing frame 4 and the second fixing frame 5 respectively. The first transmission shaft 12 is rotatably connected to the driving gear 13 at a position relative to the first arcuate shell 8, and the outer peripheral side wall of the driving gear 13 is meshed with the inner wall of the drive ring 10 adjacent to it. The first transmission shaft 12 is fixedly connected to the travel gear 14 at a position relative to the second arcuate shell 9, and the outer peripheral side wall of the travel gear 14 extends along the length direction of the travel groove 3, and the outer peripheral side wall of the travel gear 14 is meshed with the inner wall of the drive ring 10 adjacent to it.

[0032] The second transmission shaft 15 passes through the hollow area of ​​the two driving rings 10, and its two ends are rotatably connected to the first fixed frame 4 and the second fixed frame 5 respectively. The second transmission shaft 15 is fixedly connected with a driving pulley 16 at a position relative to the first arc-shaped shell 8. The driving gear 13 is coaxially provided with a driven pulley 1301. A synchronous belt 18 is sleeved between the driving pulley 16 and the driven pulley 1301. The second transmission shaft 15 is fixedly connected with a transmission gear 17 at a position relative to the second arc-shaped shell 9. The outer peripheral side wall of the transmission gear 17 is meshed with the outer peripheral side wall of the travel gear 14.

[0033] The inner wall of the driving ring 10 is coaxially provided with an outwardly protruding toothed ring portion 1002, and the two toothed ring portions 1002 are respectively meshed with the outer peripheral side wall of the driving gear 13 and the outer peripheral side wall of the travel gear 14. Limiting rings 1401 are formed at both ends of the travel gear 14, and the outer diameter of the limiting ring 1401 is larger than the outer diameter of the travel gear 14. The inner side wall of the limiting ring 1401 is in abutment with the toothed ring portion 1002 close to it. The two limiting rings 1401 are used to limit the translation of the driving ring 10 on the second arc-shaped shell 9, ensuring the gear transmission cooperation between the driving ring 10 on the second arc-shaped shell 9 and the travel gear 14 after the translation.

[0034] The rotating end of the rotating drive device 7 is connected to the second transmission shaft 15, and a connecting frame 21 is fixedly connected to the second arc-shaped shell 9. A connecting plate 2101 is fixedly connected to the connecting frame 21 at a position relative to the axis of the driving ring 10. The connecting plate 2101 is fixedly connected to the driving end of the telescopic drive device 6. Two guide rods 2102 are symmetrically arranged on the connecting frame 21, and a guide sleeve 501 for sliding connection of the guide rod 2102 is arranged on the second fixed frame 5, so as to guide the second arc-shaped shell 9 to translate and provide a certain supporting effect on the second arc-shaped shell 9.

[0035] When the walking base 1 is walking in the tunnel, the second transmission shaft 15 is driven to rotate by the rotating driving device 7 so that the driving transmission gear 17 and the driving pulley 16 rotate in the same circumferential direction. The transmission gear 17 and the driving ring 10 on the second arc-shaped shell 9 are driven by gears, so that the driving ring 10 on the second arc-shaped shell 9 rotates around its axis relative to the second arc-shaped shell 9, and the direction of rotation of the driving ring 10 on the second arc-shaped shell 9 is opposite to the direction of rotation of the second transmission shaft 15; the driving pulley 16 drives the driven pulley 1301 to rotate through the synchronous belt 18 so that it drives the driving gear 13 to rotate, so that the driving ring 10 on the first arc-shaped shell 8 rotates around its axis relative to the first arc-shaped shell 8, and the driving pulley 16 on the first arc-shaped shell 8 rotates around its axis relative to the first arc-shaped shell 8. The direction of the driving ring 10 is the same as that of the second transmission shaft 15; driven by the rotary driving device 7, the two driving rings 10 rotate in opposite directions along their circumferences, so that the two detection units 11 rotate in opposite directions along the circumferences of the driving ring 10 at the front and rear sides of the walking base 1, respectively. The detection unit 11 located on the rear side observes the tunnel from another direction to supplement the area that the detection unit 11 located on the front side cannot cover, ensuring that each detection area on the tunnel surface can be effectively detected and photographed, the detection is more comprehensive, and through repeated detection and photography of the detection units 11 on the front and rear sides, the same detection area on the tunnel surface can be observed multiple times, thereby improving the accuracy of the detection.

[0036] When the rotary drive device 7 stops, the staff can adjust the distance between the two detection units 11 through the telescopic drive device 6. Under the drive of the telescopic drive device 6, the second arc shell 9 translates along the length direction of the travel groove 3, thereby adjusting the distance between the two drive rings 10, and then adjusting the distance between the two detection units 11 to change the shooting angle, so as to better adapt to different tunnel structures and detection areas, and the applicability is good. Especially when high-precision detection is required, the distance between the two detection units 11 can be appropriately reduced, so as to increase the overlap of the images captured by the two detection units 11, and through image stitching and processing technology, it is convenient to detect surface defects such as tiny cracks and peeling on the surface of the tunnel.

[0037] Preferably, the two detection units 11 are both provided with a sensing device 23 on the opposite side, and the first arc shell 8 and the second arc shell 9 are both provided with a driving part 24 for sensing by the sensing device 23. Preferably, the sensing device 23 is a metal sensor, and the driving part 24 is a sensing metal. The sensing device 23 is electrically connected to the controller 22. When the sensing side of the sensing device 23 corresponds to the driving part 24, the sensing device 23 triggers a signal. Under the control of the controller 22, the rotating end of the rotating driving device 7 is switched to the opposite direction for rotation, thereby preventing the two detection units 11 from colliding with the first arc shell 8 and the second arc shell 9, respectively.

[0038] Preferably, a plurality of gear holes 1003 evenly distributed in a circular array are provided on the side wall of the drive ring 10 near the gear ring portion 1002, and the first arc shell 8 and the second arc shell 9 are both provided with ball screws 20, and the steel balls of the ball screws 20 extend into the guide track groove 19 and are plugged into and matched with the corresponding gear holes 1003. During the rotation of the drive ring 10, the ball screws 20 are used to realize the gear rotation, so that the drive ring 10 can accurately stop at the corresponding angle position, thereby helping the staff to quickly and accurately position the camera to the required angle, reducing the adjustment time and error, and the ball screws 20 provide a certain resistance to the corresponding drive ring 10 in the gear position, which can prevent the drive disk from accidentally rotating during the shooting of the detection unit 11, and ensure that the image quality shot by the detection unit 11 is not affected.

[0039] Of course, the above are only typical examples of the present invention. In addition, the present invention may also have many other specific implementations. All technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present invention.

Claims

1. A tunnel surface detection device, characterized in that: include: A walking base (1), the walking base (1) being provided with docking grooves (2) and travel grooves (3) arranged at intervals, a first fixing frame (4) being arranged on the front side of the walking base (1), a second fixing frame (5) being arranged on the rear side of the walking base (1), and a telescopic driving device (6) and a rotating driving device (7) arranged on the second fixing frame (5); A first arc shell (8) and a second arc shell (9) are arranged oppositely and coaxially, the first arc shell (8) is inserted into the docking groove (2), the second arc shell (9) is slidably connected to the travel groove (3), the telescopic end of the telescopic drive device (6) is connected to the second arc shell (9), the end surfaces of the first arc shell (8) and the second arc shell (9) are both opened, and the first arc shell (8) and the second arc shell (9) are both slidably connected to a drive ring (10), the drive ring (10) can rotate around its axis, and the drive ring (10) is provided with a detection unit (11) for photographing a detection area on the tunnel surface; A first transmission shaft (12) and a second transmission shaft (15) are arranged at intervals, the first transmission shaft (12) passes through the hollow areas of the two drive rings (10), and the two ends of the first transmission shaft (12) are rotatably connected to the first fixing frame (4) and the second fixing frame (5), respectively; the first transmission shaft (12) is rotatably connected to a driving gear (13) at a position relative to the first arc-shaped shell (8), and the outer peripheral side wall of the driving gear (13) is meshed with the inner wall of the drive ring (10) adjacent to it; the first transmission shaft (12) is fixedly connected to a travel gear (14) at a position relative to the second arc-shaped shell (9), and the outer peripheral side wall of the travel gear (14) extends along the length direction of the travel groove (3), and the outer peripheral side wall of the travel gear (14) is meshed with the inner wall of the drive ring (10) adjacent to it; The rotating end of the rotary drive device (7) is connected to the second transmission shaft (15), the second transmission shaft (15) passes through the hollow areas of the two drive rings (10), and the two ends thereof are rotatably connected to the first fixed frame (4) and the second fixed frame (5), respectively. The second transmission shaft (15) is fixedly connected to a driving pulley (16) at a position relative to the first arc-shaped shell (8), the driving gear (13) is coaxially provided with a driven pulley (1301), a synchronous belt (18) is sleeved between the driving pulley (16) and the driven pulley (1301), and the second transmission shaft (15) is fixedly connected to a transmission gear (17) at a position relative to the second arc-shaped shell (9), and the outer peripheral side wall of the transmission gear (17) is meshed with the outer peripheral side wall of the travel gear (14).

2. A tunnel surface detection device according to claim 1, characterized in that: The inner wall of the first arc-shaped shell (8) and the inner wall of the second arc-shaped shell (9) are both provided with a guide track groove (19) extending along the circumference of the drive ring (10); the outer wall of the drive ring (10) is provided with a guide ring (1001) protruding outward; the detection unit (11) is fixedly connected to the guide ring (1001), and the guide ring (1001) is rotatably connected in the guide track groove (19).

3. A tunnel surface detection device according to claim 2, characterized in that: The inner wall of the driving ring (10) is coaxially provided with an outwardly protruding toothed ring portion (1002), and the two toothed ring portions (1002) are respectively meshed with the outer peripheral side wall of the driving gear (13) and the outer peripheral side wall of the travel gear (14).

4. The tunnel surface detection device according to claim 3 is characterized in that: Both ends of the travel gear (14) form a limit ring (1401), and the inner side wall of the limit ring (1401) is in contact with the toothed ring part (1002) adjacent thereto.

5. The tunnel surface detection device according to claim 3 is characterized in that: A plurality of gear holes (1003) are evenly distributed in a circular array on the side wall of the drive ring (10) close to the gear ring portion (1002), and the first arc shell (8) and the second arc shell (9) are both provided with ball screws (20), and the steel balls of the ball screws (20) extend into the guide track grooves (19) and are plugged into and matched with the corresponding gear holes (1003).

6. The tunnel surface detection device according to claim 1 is characterized in that: The outer wall of the first arc-shaped shell (8) and the outer wall of the second arc-shaped shell (9) are both provided with at least one alignment member (25); the inner wall of the docking groove (2) is provided with an alignment groove (201) for the alignment member (25) to be inserted; and the inner wall of the travel groove (3) is provided with a sliding groove (301) for the alignment member (25) to be slidably connected.

7. The tunnel surface detection device according to claim 1 is characterized in that: A connecting frame (21) is fixedly connected to the second arc-shaped shell (9), a connecting plate (2101) is fixedly connected to the connecting frame (21) at a position relative to the axis of the drive ring (10), and the connecting plate (2101) is fixedly connected to the drive end of the telescopic drive device (6).

8. The tunnel surface detection device according to claim 7 is characterized in that: Two guide rods (2102) are symmetrically arranged on the connecting frame (21), and a guide sleeve (501) for sliding connection with the guide rods (2102) is arranged on the second fixing frame (5).

9. The tunnel surface detection device according to claim 1, characterized in that: The rotary drive device (7) is a stepping motor, the telescopic drive device (6) is an electric cylinder, a controller (22) is provided on the walking base (1), and the rotary drive device (7) and the telescopic drive device (6) are both electrically connected to and controlled by the controller (22).

10. The tunnel surface detection device according to claim 9, characterized in that: The two detection units (11) are each provided with a sensing device (23) electrically connected to the controller (22) on the opposite side thereof, and the first arc-shaped shell (8) and the second arc-shaped shell (9) are each provided with a driving part (24) for sensing by the sensing device (23) on the opposite side thereof; when the sensing side of the sensing device (23) corresponds to the driving part (24), the sensing device (23) triggers a signal, and under the control of the controller (22), the rotating end of the rotating driving device (7) switches to the opposite direction for rotation.

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