A high-precision collection device for cracks on a surface of a highway tunnel lining

Abstract

This invention discloses a high-precision acquisition device for surface cracks in highway tunnel lining, mounted on a vehicle body, comprising: a positioning part fixed to the top surface of the vehicle body; a swinging part disposed on top of the positioning part, the swinging part including a swing plate, both ends of the swing plate being connected to the positioning part via a driving member and a driven member respectively, a concentric shaft fixedly connected to the driven member at a position on the same rotation axis as the driving member, two infrared rangefinders fixedly connected to the top outer wall of the concentric shaft, the two infrared rangefinders being symmetrically arranged about a plane perpendicular to the ground and parallel to the tunnel direction, the two infrared rangefinders being signal-connected to a control terminal via a controller; an extension part disposed on the bottom surface of the swing plate, the top of the extension part penetrating the swing plate and fixedly connected to the swing plate; and a detection part fixedly connected to the top surface of the extension part.

Description

Technical Field

[0001] This invention relates to the field of highway tunnel inspection technology, and in particular to a high-precision acquisition device for cracks on the surface of highway tunnel lining. Background Technology

[0002] Highway tunnels have large cross-sections and complex stresses, requiring various inspections to ensure their operational safety. Tunnel inspections are categorized into daily inspections, periodic inspections, and anomaly inspections. Cracks in a tunnel can seriously threaten its operational safety. There are two methods for detecting tunnel cracks: manual inspection and mobile tunnel crack detection vehicles.

[0003] In the prior art, a vehicle frame and a first support device, a second support device, and a detection device are disclosed on the vehicle frame. The first support device and the second support device have the same structure and are arranged along the moving direction of the vehicle frame. The first support device includes an outer cylinder, an inner support rod, an elastic support device, a support frame, and an arc plate. The elastic support device is disposed between the outer cylinder and the inner support rod to provide elastic support for the inner support rod. The detection height of the patented detection device can be adjusted according to the undulation of the tunnel, avoiding the influence of the height change between the track and the tunnel top on the detection results, and the detection accuracy is higher.

[0004] In response to the above, the inventors discovered that the device uses a swing mechanism to detect the tunnel ceiling. However, adjusting the height using only the first and second support devices cannot determine the center of the arc. As a result, the center of the arc in the highway tunnel is not necessarily in the same position as the center of the probe when it swings. Furthermore, the size of the arc varies from tunnel to tunnel, while the amplitude of the probe swing cannot be changed, leading to a decrease in detection accuracy. Summary of the Invention

[0005] The purpose of this invention is to provide a high-precision acquisition device for surface cracks in highway tunnel linings, in order to solve the problems existing in the prior art.

[0006] To achieve the above objectives, the present invention provides the following solution: The present invention provides a high-precision acquisition device for surface cracks in highway tunnel lining, mounted on a vehicle body, comprising:

[0007] The positioning part is fixedly connected to the top surface of the vehicle body;

[0008] The swinging part is disposed on the top of the positioning part. The swinging part includes a swing plate. The two ends of the swing plate are respectively connected to the positioning part through a driving member and a driven member. A concentric shaft is fixedly connected to the driven member at a position on the same rotation axis as the driving member. Two infrared rangefinders are fixedly connected to the top outer wall of the concentric shaft. The two infrared rangefinders are symmetrically arranged about a plane perpendicular to the ground and parallel to the tunnel direction. The two infrared rangefinders are connected to a control terminal signal through a controller.

[0009] An extension portion is provided on the bottom surface of the swing plate, and the top of the extension portion penetrates the swing plate and is fixedly connected to the swing plate;

[0010] A detection unit is fixed to the top surface of the extension.

[0011] Preferably, the positioning part includes a positioning plate, which is fixed to the top surface of the vehicle body. Positioning seats are fixed to both sides of the top surface of the positioning plate. A bidirectional screw is rotatably connected between the two positioning seats. One end of the bidirectional screw passes through one of the positioning seats and is fixed to the output end of a positioning motor. The positioning motor is fixed to the side of the positioning seat. Two positioning blocks are respectively provided through both ends of the bidirectional screw. Both positioning blocks are threadedly connected to the bidirectional screw. The bottom surface of the positioning block slides in contact with the top surface of the positioning plate. One end of a positioning rod is hinged to the top surface of the positioning block. The other ends of the two positioning rods are respectively hinged to a first fixing plate and a second fixing plate. The first fixing plate and the second fixing plate are respectively connected to the driving member and the driven member. A connecting frame is fixed to the bottom surface of the first fixing plate and the second fixing plate.

[0012] Preferably, the driving component includes a driving plate, which is fixedly connected to one side of the swing plate. A driving motor is fixedly connected to the side of the first fixed plate, and the output end of the driving motor passes through the first fixed plate and is fixedly connected to the driving plate.

[0013] The driven member includes a driven plate, which is fixed to the other side of the swing plate. The driven plate is rotatably connected to the second fixed plate via a rotating shaft. The concentric shaft is fixed to the side of the second fixed plate. The concentric shaft, the rotating shaft, and the output end of the drive motor are coaxially arranged.

[0014] Preferably, the extension includes a shock-absorbing housing, which is fixed to the bottom surface of the swing plate. A shock-absorbing plate is disposed inside the shock-absorbing housing. Shock-absorbing elements are disposed on both sides of the bottom surface of the shock-absorbing plate. An extension is disposed on the bottom surface of the shock-absorbing plate. The extension passes through the shock-absorbing plate and the swing plate in sequence, and the detection part is fixed to the top surface of the extension.

[0015] Preferably, the damping component includes an upper damping tube, which is fixedly connected to the bottom surface of the damping plate. A lower damping tube is sleeved on the upper damping tube, with the inner wall of the lower damping tube in sliding contact with the outer wall of the upper damping tube. The bottom surface of the lower damping tube is fixedly connected to the bottom surface of the inner cavity of the damping housing. A damping spring is provided inside the upper and lower damping tubes, with the top surface of the damping spring fixedly connected to the bottom surface of the damping plate and the bottom surface of the damping spring fixedly connected to the bottom surface of the inner cavity of the damping housing.

[0016] Preferably, the extension component includes an extension motor, which is fixedly connected to the bottom surface of the shock absorber. The output end of the extension motor passes through the shock absorber and is fixedly connected to an extension screw. The outer wall of the extension screw is connected to a square tube by a thread. The square tube passes through the swing plate and slides in contact with the swing plate. A square cylinder is fixedly connected to the top surface of the swing plate. The inner wall of the square cylinder slides in contact with the outer wall of the square tube. The detection part is fixedly connected to the top surface of the square tube.

[0017] Preferably, the detection unit includes a detection housing, which is fixed to the top surface of the square tube. A cleaning component is disposed inside the detection housing, and a collection component is disposed on the top surface of the detection housing. The cleaning component and the collection component are connected in communication. Auxiliary components are disposed on both sides of the detection housing, and the auxiliary components penetrate the detection housing and are fixed to the detection housing.

[0018] Preferably, the cleaning component includes an air pump, which is fixedly connected to the bottom surface of the inner cavity of the detection housing. Ventilation holes are respectively opened on the two side walls of the detection housing, and a filter screen is fixedly connected in the ventilation hole.

[0019] Preferably, the acquisition device includes an industrial camera, which is fixedly attached to the top surface of the detection housing. A ventilation cylinder is fixedly attached to the top surface of the detection housing, and the industrial camera is disposed inside the ventilation cylinder. A plurality of through holes are opened on the top surface of the detection housing, and the through holes are connected to the inner cavity of the ventilation cylinder. A plurality of lighting lamps are fixedly attached to the top surface of the ventilation cylinder.

[0020] Preferably, the auxiliary component includes an auxiliary cylinder that penetrates the detection housing and is fixedly connected to it. An auxiliary plate is disposed inside the auxiliary cylinder, and the circumferential surface of the auxiliary plate is in sliding contact with the inner wall of the auxiliary cylinder. One end of an auxiliary rod is fixedly connected to the top surface of the auxiliary plate, and the other end of the auxiliary rod penetrates the auxiliary cylinder and is in sliding contact with it. An auxiliary block is fixedly connected to the top surface of the auxiliary rod, and a rotating groove is formed on the top surface of the auxiliary block. A ball is disposed in the rotating groove, and the outer wall of the ball is in sliding contact with the inner wall of the rotating groove. An auxiliary spring is sleeved on the auxiliary rod located inside the auxiliary cylinder. A distance sensor is fixedly connected to the bottom surface of the inner cavity of the auxiliary cylinder, and the distance sensor is signal-connected to the control terminal through the controller.

[0021] This invention discloses the following technical advantages: The entire device is mounted on a vehicle. When detecting tunnel cracks, the road needs to be closed. The vehicle carrying this device is driven slowly to the center of the road. The positioning unit, in conjunction with two infrared rangefinders, positions the device relative to the center of the tunnel's curved roof. This allows the drive unit to propel the detection unit along a concentric circle with the tunnel roof, ensuring a constant distance between the detection unit and the tunnel roof during the oscillation, thus improving detection accuracy. The concentric shaft is coaxial with the rotation axis of the drive unit. The distance between the drive unit and the tunnel roof is measured by two infrared rangefinders at an angle. When the two distances are equal, the detection unit is ensured to be coaxial with the center of the tunnel roof. The extension unit can extend the detection unit, controlling the distance between the detection unit and the tunnel roof, improving adaptability, and allowing the entire device to be used in different highway tunnels. The positioning unit can raise and lower the concentric shaft, thereby locating the center of the circle. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly described below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 This is a schematic diagram of the acquisition device in this invention;

[0025] Figure 3 for Figure 2 A magnified view of a portion of A1;

[0026] Figure 4 for Figure 2 A magnified view of part A2;

[0027] Figure 5 This is a schematic diagram of the auxiliary mechanism in this invention;

[0028] The components include: 1. Vehicle body; 2. Swing plate; 3. Concentric shaft; 4. Infrared rangefinder; 5. Positioning plate; 6. Positioning seat; 7. Bidirectional screw; 8. Positioning motor; 9. Positioning block; 10. Positioning rod; 11. First fixing plate; 12. Second fixing plate; 13. Connecting frame; 14. Drive plate; 15. Drive motor; 16. Driven plate; 17. Rotating shaft; 18. Shock-absorbing housing; 19. Shock-absorbing plate; 20. Upper shock-absorbing tube; 21. Lower shock-absorbing tube; 22. Shock-absorbing spring; 23. Extension motor; 24. Extension screw; 2 5. Square tube; 26. Square cylinder; 27. Detection housing; 28. Air pump; 29. ​​Filter screen; 30. Industrial camera; 31. Ventilation duct; 32. Through hole; 33. Lighting lamp; 34. Auxiliary cylinder; 35. Auxiliary plate; 36. Auxiliary rod; 37. Auxiliary block; 38. Ball bearing; 39. Auxiliary spring; 40. Distance sensor; 41. Rotating housing; 42. Rotating motor; 43. Rotating plate; 44. Baffle; 45. Lateral movement cylinder; 46. Lateral movement spring; 47. Extension cylinder; 48. Extension rod; 49. Abutment wheel. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0031] Reference Figure 1-4 This invention provides a high-precision acquisition device for surface cracks in highway tunnel lining, mounted on a vehicle body 1, comprising:

[0032] The positioning part is fixedly connected to the top surface of the vehicle body 1;

[0033] The swinging part is located on top of the positioning part. The swinging part includes a swing plate 2. The two ends of the swing plate 2 are connected to the positioning part through a driving member and a driven member, respectively. A concentric shaft 3 is fixedly connected to the driven member at a position on the same rotation axis as the driving member. Two infrared rangefinders 4 are fixedly connected to the top outer wall of the concentric shaft 3. The two infrared rangefinders 4 are symmetrically arranged about a plane that is perpendicular to the ground and parallel to the tunnel direction. The two infrared rangefinders 4 are connected to the control terminal signal through a controller.

[0034] An extension is provided on the bottom surface of the swing plate 2, and the top of the extension penetrates through the swing plate 2 and is fixedly connected to the swing plate 2.

[0035] The testing section is fixed to the top surface of the extension.

[0036] The entire device is mounted on vehicle body 1. When detecting tunnel cracks, the road needs to be closed. Vehicle body 1, carrying this device, is driven slowly to the center of the road. The positioning unit, in conjunction with two infrared rangefinders 4, positions the device relative to the center of the tunnel's curved roof. This allows the drive unit to propel the detection unit along a concentric circle with the tunnel roof, ensuring a constant distance between the detection unit and the tunnel roof during the oscillation, thus improving detection accuracy. The concentric shaft 3 is coaxial with the drive unit's rotation axis. The distance between the shaft and the tunnel roof is measured by two infrared rangefinders 4 at an angle. When these two distances are equal, the detection unit is confirmed to be coaxial with the center of the tunnel roof. The extension unit extends the detection unit, controlling the distance between it and the tunnel roof, improving adaptability, and allowing the device to be used in various highway tunnels. The positioning unit also raises and lowers the concentric shaft 3, enabling the search for the center of the circle.

[0037] Further optimization of the scheme: the positioning part includes a positioning plate 5, which is fixed to the top surface of the vehicle body 1. Positioning seats 6 are fixed to both sides of the top surface of the positioning plate 5. A bidirectional screw 7 is rotatably connected between the two positioning seats 6. One end of the bidirectional screw 7 passes through one of the positioning seats 6 and is fixed to the output end of the positioning motor 8. The positioning motor 8 is fixed to the side of the positioning seat 6. Two positioning blocks 9 are respectively provided through both ends of the bidirectional screw 7. Both positioning blocks 9 are threadedly connected to the bidirectional screw 7. The bottom surface of the positioning block 9 slides in contact with the top surface of the positioning plate 5. One end of the positioning rod 10 is hinged to the top surface of the positioning block 9. The other ends of the two positioning rods 10 are respectively hinged to a first fixing plate 11 and a second fixing plate 12. The first fixing plate 11 and the second fixing plate 12 are respectively connected to the driving component and the driven component. A connecting frame 13 is fixed to the bottom surface of the first fixing plate 11 and the second fixing plate 12.

[0038] The positioning plate 5 is fixed to the vehicle body 1, connecting the entire device to the vehicle body 1. The positioning motor 8 drives the bidirectional screw 7 to rotate, causing the two positioning blocks 9 to move in opposite directions, thus adjusting the position of the driving component. When the two infrared rangefinders 4 detect equal distances, the driving component is positioned at the center of the tunnel top surface, causing the detection unit to rotate coaxially and perform equidistant detection of the tunnel top surface. The connecting frame 13 secures the first fixing plate 11 and the second fixing plate 12, enabling the entire device to rise and fall under the influence of the positioning rod 10.

[0039] The scheme is further optimized. The driving component includes a driving plate 14, which is fixed to one side of the swing plate 2. A driving motor 15 is fixed to the side of the first fixed plate 11. The output end of the driving motor 15 passes through the first fixed plate 11 and is fixed to the driving plate 14.

[0040] The driven component includes a driven plate 16, which is fixed to the other side of the swing plate 2. The driven plate 16 is rotatably connected to the second fixed plate 12 via a rotating shaft 17. The concentric shaft 3 is fixed to the side of the second fixed plate 12. The concentric shaft 3, the rotating shaft 17, and the output end of the drive motor 15 are coaxially arranged.

[0041] The drive motor 15 drives the drive plate 14 to rotate, and under the action of the driven plate 16 and the rotating shaft 17, it drives the swing plate 2 to swing, thereby driving the detection unit to perform swing detection.

[0042] The design is further optimized. The extension includes a shock-absorbing housing 18, which is fixed to the bottom surface of the swing plate 2. A shock-absorbing plate 19 is provided inside the shock-absorbing housing 18. Shock-absorbing components are provided on both sides of the bottom surface of the shock-absorbing plate 19. An extension is provided on the bottom surface of the shock-absorbing plate 19. The extension passes through the shock-absorbing plate 19 and the swing plate 2 in sequence, and the detection part is fixed to the top surface of the extension.

[0043] After the center positioning is completed, the extension unit drives the detection unit to rise and fall, thereby adjusting the distance between the detection unit and the tunnel top surface.

[0044] The design is further optimized. The damping component includes an upper damping tube 20, which is fixed to the bottom surface of the damping plate 19. A lower damping tube 21 is provided outside the upper damping tube 20. The inner wall of the lower damping tube 21 is in sliding contact with the outer wall of the upper damping tube 20. The bottom surface of the lower damping tube 21 is fixed to the bottom surface of the inner cavity of the damping housing 18. A damping spring 22 is provided inside the upper damping tube 20 and the lower damping tube 21. The top surface of the damping spring 22 is fixed to the bottom surface of the damping plate 19, and the bottom surface of the damping spring 22 is fixed to the bottom surface of the inner cavity of the damping housing 18.

[0045] The upper damping tube 20 and the lower damping tube 21 are configured to achieve the damping effect through the damping spring 22, thereby achieving the damping effect of the detection unit and extending its service life.

[0046] Further optimization of the scheme: the extension component includes an extension motor 23, which is fixed to the bottom surface of the damping plate 19. The output end of the extension motor 23 passes through the damping plate 19 and is fixed to an extension screw 24. The outer wall of the extension screw 24 is connected to a square tube 25 by a thread. The square tube 25 passes through the swing plate 2 and slides in contact with the swing plate 2. The top surface of the swing plate 2 is fixed to a square cylinder 26. The inner wall of the square cylinder 26 slides in contact with the outer wall of the square tube 25. The detection part is fixed to the top surface of the square tube 25.

[0047] The extension motor 23 drives the extension screw 24 to rotate. Under the limiting action of the square tube 26, the square tube 25 performs telescopic movements, thereby realizing the extension function.

[0048] The scheme is further optimized. The detection unit includes a detection housing 27, which is fixed to the top surface of the square tube 25. A cleaning component is installed inside the detection housing 27, and a collection component is installed on the top surface of the detection housing 27. The cleaning component and the collection component are connected. Auxiliary components are installed on both sides of the detection housing 27, and the auxiliary components penetrate the detection housing 27 and are fixed to the detection housing 27.

[0049] The cleaning components effectively clean the tunnel ceiling, preventing dust from covering tiny cracks and affecting detection accuracy. The auxiliary components allow for adjustment of the distance between the industrial camera 30 and the tunnel ceiling.

[0050] The solution is further optimized. The cleaning component includes an air pump 28, which is fixed to the bottom surface of the inner cavity of the detection housing 27. Ventilation holes are opened on both sides of the detection housing 27, and a filter screen 29 is fixed in the ventilation hole.

[0051] The air pump 28 draws outside air into the detection housing 27 through the filter screen 29, and then sprays it out through the through hole 32. The sprayed gas surrounds the industrial camera 30, which not only has a cleaning effect, but also prevents the lens of the industrial camera 30 from being covered with dust.

[0052] The scheme is further optimized. The acquisition component includes an industrial camera 30, which is fixed to the top surface of the detection housing 27. A ventilation cylinder 31 is fixed to the top surface of the detection housing 27. The industrial camera 30 is set inside the ventilation cylinder 31. Several through holes 32 are opened on the top surface of the detection housing 27. The through holes 32 are connected to the inner cavity of the ventilation cylinder 31. Several lighting lamps 33 are fixed to the top surface of the ventilation cylinder 31.

[0053] The lighting 33 provides a light source, making the photography process clearer.

[0054] Further optimization of the scheme includes an auxiliary cylinder 34, which penetrates and is fixedly connected to the detection housing 27. An auxiliary plate 35 is provided inside the auxiliary cylinder 34, and the circumferential surface of the auxiliary plate 35 slides in contact with the inner wall of the auxiliary cylinder 34. One end of an auxiliary rod 36 is fixedly connected to the top surface of the auxiliary plate 35, and the other end of the auxiliary rod 36 penetrates and slides in contact with the auxiliary cylinder 34. An auxiliary block 37 is fixedly connected to the top surface of the auxiliary rod 36, and a rotating groove is provided on the top surface of the auxiliary block 37. A ball bearing 38 is provided in the rotating groove, and the outer wall of the ball bearing 38 slides in contact with the inner wall of the rotating groove. An auxiliary spring 39 is sleeved on the auxiliary rod 36 located inside the auxiliary cylinder 34. A distance sensor 40 is fixedly connected to the bottom surface of the inner cavity of the auxiliary cylinder 34, and the distance sensor 40 is connected to the control terminal via a controller.

[0055] The ball bearing 38 is set to roll against the tunnel top surface, and the extension is used to adjust the distance. The distance sensor 40 is set to detect the distance between it and the auxiliary plate 35, thereby realizing the distance detection between the industrial camera 30 and the tunnel top surface.

[0056] In one embodiment of the present invention, an auxiliary mechanism is provided on the bottom surface of the positioning plate 5, and the auxiliary mechanism is fixedly connected to the top surface of the vehicle body 1;

[0057] The auxiliary mechanism includes a rotating housing 41, which is fixed to the top surface of the vehicle body 1. A rotating motor 42 is fixed to the bottom surface of the inner cavity of the rotating housing 41. The output end of the rotating motor 42 passes through the rotating housing 41 and is fixed to a rotating plate 43. The bottom surface of the rotating plate 43 is in sliding contact with the top surface of the rotating housing. Baffles 44 are fixed to both sides of the top surface of the rotating plate 43. A positioning plate 5 is disposed between the two baffles 44. The bottom surface of the positioning plate 5 is in sliding contact with the top surface of the rotating plate 43. One end of a transverse moving cylinder 45 is fixed to both sides of the positioning plate 5. The other end of the transverse moving cylinder 45 passes through the baffles 44 and is in sliding contact with the baffles 44. A transverse moving spring 46 is sleeved on the outer wall of the transverse moving cylinder 45. The two ends of the transverse moving spring 46 are fixed to the sides of the baffles 44 and the positioning plate 5, respectively. An extension cylinder 47 is fixed inside the transverse moving cylinder 45. One end of an extension rod 48 is fixed to the output end of the extension cylinder 47. The other end of the extension rod 48 is rotatably connected to an abutment wheel 49. When the vehicle body 1 enters the tunnel for testing in a closed section of the road, the rotating plate 43 is driven to rotate by the rotating motor 42. At the same time, the extension cylinder 47 drives the extension rod 48 so that the two abutment wheels 49 can abut against the two ends of the tunnel. This setting can ensure that the vehicle body 1 is always located on the center line of the tunnel. The lateral spring 46 realizes the relative displacement between the positioning plate 5 and the vehicle body 1, so that the driver can make fine adjustments in real time according to the data measured by the two infrared rangefinders 4, reducing the difficulty of operation for the driver.

[0058] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0059] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A high-precision collection device for cracks on the surface of a highway tunnel lining, arranged on a vehicle body (1), characterized in that, include: A positioning part is fixedly connected to the top surface of the vehicle body (1); The swinging part is located on the top of the positioning part. The swinging part includes a swing plate (2). The two ends of the swing plate (2) are connected to the positioning part through a driving member and a driven member, respectively. A concentric shaft (3) is fixed on the driven member at the same rotation axis direction as the driving member. Two infrared rangefinders (4) are fixed on the top outer wall of the concentric shaft (3). The two infrared rangefinders (4) are symmetrically arranged about a plane perpendicular to the ground and parallel to the tunnel direction. The two infrared rangefinders (4) are connected to the control terminal signal through a controller. An extension is provided on the bottom surface of the swing plate (2), and the top of the extension penetrates the swing plate (2) and is fixedly connected to the swing plate (2); The detection unit is fixed to the top surface of the extension; The positioning part includes a positioning plate (5), and an auxiliary mechanism is provided on the bottom surface of the positioning plate (5). The auxiliary mechanism is fixed to the top surface of the vehicle body (1). The auxiliary mechanism includes a rotating housing (41), which is fixed to the top surface of the vehicle body (1). A rotating motor (42) is fixed to the bottom surface of the inner cavity of the rotating housing (41). The output end of the rotating motor (42) passes through the rotating housing (41) and is fixed to a rotating plate (43). The bottom surface of the rotating plate (43) slides in contact with the top surface of the rotating housing (41). Baffles (44) are fixed to both sides of the top surface of the rotating plate (43). The positioning plate (5) is disposed between the two baffles (44). The bottom surface of the positioning plate (5) slides in contact with the top surface of the rotating plate (43). One end of the transverse cylinder (45) is fixedly connected to both sides of the positioning plate (5). The other end of the transverse cylinder (45) passes through the baffle (44) and slides in contact with the baffle (44). A transverse spring (46) is sleeved on the outer wall of the transverse cylinder (45). The two ends of the transverse spring (46) are fixedly connected to the side of the baffle (44) and the positioning plate (5) respectively. An extension cylinder (47) is fixedly connected inside the transverse cylinder (45). One end of the extension rod (48) is fixedly connected to the output end of the extension cylinder (47). The other end of the extension rod (48) is rotatably connected to an abutment wheel (49).

2. The device for collecting high-precision cracks on the surface of a highway tunnel lining according to claim 1, characterized in that: The positioning plate (5) is fixed to the top surface of the vehicle body (1). Positioning seats (6) are fixed to both sides of the top surface of the positioning plate (5). A bidirectional screw (7) is rotatably connected between the two positioning seats (6). One end of the bidirectional screw (7) passes through one of the positioning seats (6) and is fixed to the output end of the positioning motor (8). The positioning motor (8) is fixed to the side of the positioning seat (6). Two positioning blocks (9) are respectively provided through both ends of the bidirectional screw (7). Both positioning blocks (9) are connected to the bidirectional screw (7). The bottom surface of the positioning block (9) is in sliding contact with the top surface of the positioning plate (5) via a threaded connection. One end of the positioning rod (10) is hinged to the top surface of the positioning block (9). The other ends of the two positioning rods (10) are respectively hinged to the first fixing plate (11) and the second fixing plate (12). The first fixing plate (11) and the second fixing plate (12) are respectively connected to the driving member and the driven member. The bottom surfaces of the first fixing plate (11) and the second fixing plate (12) are fixed with a connecting frame (13).

3. The high-precision acquisition device for surface cracks in highway tunnel lining according to claim 2, characterized in that: The driving component includes a driving plate (14), which is fixed to one side of the swing plate (2). A driving motor (15) is fixed to the side of the first fixed plate (11), and the output end of the driving motor (15) passes through the first fixed plate (11) and is fixed to the driving plate (14). The driven component includes a driven plate (16), which is fixed to the other side of the swing plate (2). The driven plate (16) is rotatably connected to the second fixed plate (12) via a rotating shaft (17). The concentric shaft (3) is fixed to the side of the second fixed plate (12). The concentric shaft (3), the rotating shaft (17), and the output end of the drive motor (15) are coaxially arranged.

4. The device for collecting high-precision cracks on the surface of a highway tunnel lining according to claim 3, characterized in that: The extension includes a shock-absorbing housing (18), which is fixed to the bottom surface of the swing plate (2). A shock-absorbing plate (19) is provided inside the shock-absorbing housing (18). Shock-absorbing components are provided on both sides of the bottom surface of the shock-absorbing plate (19). An extension is provided on the bottom surface of the shock-absorbing plate (19). The extension passes through the shock-absorbing plate (19) and the swing plate (2) in sequence, and the detection part is fixed to the top surface of the extension.

5. The device for collecting highway tunnel lining surface cracks with high precision according to claim 4, characterized in that: The damping component includes an upper damping tube (20), which is fixed to the bottom surface of the damping plate (19). The upper damping tube (20) is fitted with a lower damping tube (21). The inner wall of the lower damping tube (21) is in sliding contact with the outer wall of the upper damping tube (20). The bottom surface of the lower damping tube (21) is fixed to the bottom surface of the inner cavity of the damping housing (18). A damping spring (22) is provided inside the upper damping tube (20) and the lower damping tube (21). The top surface of the damping spring (22) is fixed to the bottom surface of the damping plate (19), and the bottom surface of the damping spring (22) is fixed to the bottom surface of the inner cavity of the damping housing (18).

6. The device for collecting highway tunnel lining surface cracks with high precision according to claim 5, characterized in that: The extension component includes an extension motor (23), which is fixed to the bottom surface of the damping plate (19). The output end of the extension motor (23) passes through the damping plate (19) and is fixed to an extension screw (24). The outer wall of the extension screw (24) is connected to a square tube (25) by a thread. The square tube (25) passes through the swing plate (2) and slides in contact with the swing plate (2). The top surface of the swing plate (2) is fixed to a square tube (26). The inner wall of the square tube (26) slides in contact with the outer wall of the square tube (25). The detection part is fixed to the top surface of the square tube (25).

7. The high-precision acquisition device for surface cracks in highway tunnel lining according to claim 6, characterized in that: The detection unit includes a detection housing (27), which is fixed to the top surface of the square tube (25). A cleaning component is provided inside the detection housing (27), and a collection component is provided on the top surface of the detection housing (27). The cleaning component and the collection component are connected in communication. Auxiliary components are provided on both sides of the detection housing (27), and the auxiliary components penetrate the detection housing (27) and are fixed to the detection housing (27).

8. The device according to claim 7, characterized in that: The cleaning component includes an air pump (28), which is fixed to the bottom surface of the inner cavity of the detection housing (27). Ventilation holes are respectively opened on both sides of the detection housing (27), and a filter screen (29) is fixed in the ventilation hole.

9. The device for collecting highway tunnel lining surface cracks with high precision according to claim 8, characterized in that: The acquisition device includes an industrial camera (30), which is fixed to the top surface of the detection housing (27). A ventilation cylinder (31) is fixed to the top surface of the detection housing (27). The industrial camera (30) is disposed inside the ventilation cylinder (31). A plurality of through holes (32) are opened on the top surface of the detection housing (27). The through holes (32) are connected to the inner cavity of the ventilation cylinder (31). A plurality of lighting lamps (33) are fixed to the top surface of the ventilation cylinder (31).

10. The device for collecting highway tunnel lining surface cracks with high precision according to claim 9, characterized in that: The auxiliary component includes an auxiliary cylinder (34), which penetrates the detection housing (27) and is fixedly connected to it. An auxiliary plate (35) is disposed inside the auxiliary cylinder (34), and the circumferential surface of the auxiliary plate (35) slides in contact with the inner wall of the auxiliary cylinder (34). One end of an auxiliary rod (36) is fixedly connected to the top surface of the auxiliary plate (35), and the other end of the auxiliary rod (36) penetrates the auxiliary cylinder (34) and slides in contact with it. An auxiliary block (37) is fixed to the top surface of the auxiliary rod (36). A rotating groove is provided on the top surface of the auxiliary block (37). A ball (38) is provided in the rotating groove. The outer wall of the ball (38) slides in contact with the inner wall of the rotating groove. An auxiliary spring (39) is provided on the outer sleeve of the auxiliary rod (36) located in the auxiliary cylinder (34). A distance sensor (40) is fixed to the bottom surface of the inner cavity of the auxiliary cylinder (34). The distance sensor (40) is connected to the control terminal signal through the controller.

Images