Concrete crack detection device

Abstract

The invention discloses a concrete crack detection device, which relates to the technical field of concrete crack detection tools, and comprises two guide rails arranged in parallel front and back, a moving frame is provided between the top surfaces of the two guide rails for horizontal sliding, a crack detector is placed on a fixed frame, and a detection probe is connected to the bottom end of a spiral wire; transverse moving frames are provided for sliding on both sides of the top of the moving frame, and a transverse moving component is installed in a moving groove; a traction mechanism is provided in the moving frame; and a driving mechanism is installed at the bottom of the moving frame; the invention facilitates a linear moving concrete crack scanning operation on a short-distance and discontinuous concrete retaining wall through the cooperation of the transverse moving component with the traction mechanism and the guide rails, and the scanning path of the whole can be achieved by two detection probes with a serpentine motion trajectory, so that an all-round coverage scanning of the whole crack can be ensured, and there is no need for manual hand-held detection probes to scan the crack position, thereby improving the convenience and efficiency of concrete crack detection.

Description

Technical Field

[0001] The invention relates to the technical field of concrete crack detection tools, and in particular to a concrete crack detection device. Background Art

[0002] Concrete crack detection devices are devices specifically designed to detect cracks in concrete structures. They use various technologies to accurately measure the width, depth, and location of cracks, providing important data for safety assessment and repair of structures.

[0003] However, the existing shortcomings of concrete crack detection mainly include the following points: (1) Dependence on manual operation: Traditional concrete crack detection methods often rely on manual handheld detection probes to scan the crack position; this method is not only labor-intensive but also inefficient, and it is difficult to complete crack detection in large areas or complex structures in a short period of time; (2) Limited comprehensiveness of detection: Due to the limitations of manual operation, it is difficult to ensure a full-scale and complete scanning of cracks; especially for some hidden or difficult-to-reach cracks, manual detection is often difficult to detect, thus affecting the accuracy and comprehensiveness of the detection; (3) Limited scope of application: Traditional detection methods are limited to There are high requirements for the shape and curvature of concrete retaining walls. For concrete retaining walls with curvature, manual inspection often finds it difficult to adapt to its shape changes, resulting in poor inspection results. In addition, for some short-distance and discontinuous concrete retaining walls, traditional methods also find it difficult to achieve efficient crack scanning operations. This makes it difficult to balance inspection efficiency and accuracy: while pursuing inspection efficiency, it is often difficult to ensure inspection accuracy. Manual operations are easily affected by external factors (such as light, angle, etc.), resulting in errors in inspection results. Traditional automated equipment often lacks sufficient flexibility and adaptability, making it difficult to meet complex and changing inspection needs. Therefore, the above problems need to be improved. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a concrete crack detection device.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a concrete crack detection device, comprising two guide rails arranged in parallel front and back and connecting screws fixedly connected to the two ends of the opposite surfaces of the guide rails, an adjusting screw is screwed and connected between the connecting screws between the ends of the two guide rails, a knob is fixedly sleeved in the middle of the adjusting screw, a moving frame is provided between the top surfaces of the two guide rails for horizontal sliding, a protective cover is installed on the top of the moving frame, a fixing frame is installed on the top of the protective cover, a crack detector is placed on the fixing frame, a pair of spiral wires are passed through the top front end of the protective cover, and a detection probe for detecting cracks in the concrete retaining wall is connected to the bottom end of the spiral wire; the moving frame is provided with a protective cover, a fixing frame is provided on the top of the protective cover, a crack detector is placed on the fixing frame, a pair of spiral wires are passed through the top front end of the protective cover, and a detection probe for detecting cracks in the concrete retaining wall is connected to the bottom end of the spiral wire; Both sides of the top of the moving frame are slidably provided with transverse moving frames, a traction seat is slidably provided in the front end frame opening of one of the transverse moving frames, and a traction seat is also slidably provided in the rear end frame opening of the other transverse moving frame, a mounting opening is opened in the middle of the top surface of the traction seat, an inverted electric push rod is installed in the mounting opening, and the detection probe is installed at the bottom of the telescopic end of the electric push rod; the top front and rear ends of the moving frame are horizontally opened with moving grooves, and a transverse moving assembly for synchronous movement of the two transverse moving frames is installed in the moving groove; a traction mechanism for offset movement of the two traction seats is provided in the moving frame; the front and rear end surfaces of the moving frame are provided with auxiliary moving assemblies; and driving mechanisms are slidably installed at the four corners of the bottom of the moving frame.

[0006] Preferably, the driving mechanism includes adjustment slots opened on both sides of the bottom of the movable frame, a magnetic slider slidingly arranged inside the adjustment slot, a driving seat fixedly connected to the bottom of the magnetic slider and a wheel axle longitudinally rotatably arranged in the lower part of the driving seat, the front and rear ends of the wheel axle are both movable through the outside of the driving seat and are equipped with movable wheels; battery packs are installed on both sides of the inner top surface of the protective cover.

[0007] Preferably, a magnetic strip that magnetically cooperates with the magnetic slider is installed on the inner top surface of the adjustment slot, and storage grooves are vertically provided at the front and rear ends of the inner top surface of the adjustment slot, and a limit plate is vertically movably provided in the storage groove, and through openings for the limit plate to pass through are provided at the front and rear ends of the bottom surface of the magnetic strip.

[0008] Preferably, the top of the guide rail is provided with a guide groove along the length direction, and the movable wheels at the front and rear ends of the driving seat roll and abut against the guide groove; a driving motor is installed in the upper part of the driving seat, a driving pulley is sleeved on the motor shaft of the driving motor, a driven pulley is sleeved on the middle part of the wheel shaft, and a transmission belt is sleeved between the driving pulley and the driven pulley.

[0009] Preferably, the auxiliary moving component includes stabilizing holes opened on both sides of the front and rear ends of the moving frame, a connecting shaft slidably arranged inside the stabilizing hole, an anti-slip plate fixedly connected to the inner end of the connecting shaft, and a clamping roller rotatably installed on the outer end of the connecting shaft, and a reset spring is sleeved on the connecting shaft between the anti-slip plate and the inner wall of the moving frame.

[0010] Preferably, stabilizing tubes that cover the return spring and the anti-slip plate are rotatably mounted on both sides of the movable frame, and a scraping plate in a vertical state is longitudinally mounted on the bottom of the stabilizing tube.

[0011] Preferably, the transverse movement assembly includes a bidirectional screw that rotates laterally inside a moving groove, a moving block sleeved on both ends of the bidirectional screw, and a small motor coaxially installed at one end of the bidirectional screw, and the small motor is installed in a driving cavity inside one side of the moving frame. The front and rear ends of the transverse movement frame are provided with connecting plates, and the bottom of the connecting plate is fixed to the top of the moving block by bolts.

[0012] Preferably, the traction mechanism includes a reversing frame fixed at the front end corners of the two opposite faces of the two transverse moving frames, a reversing roller vertically rotatably installed on the reversing frame, a positioning frame fixed at the rear end corners of the opposite faces of the two transverse moving frames, a winding roller vertically rotatably installed on the positioning frame, and a micro motor for driving the winding roller arranged on the top of the positioning frame, and the front and rear end inner walls of the mounting opening of the traction seat are provided with clamping grooves, the clamping groove at the rear end of the mounting opening is vertically clamped with a first clamping block, and the clamping groove at the front end is vertically opened with a second clamping block, the rear end of the first clamping block is fixedly connected with a traction rope, and the rear end of the traction rope is wound and fixed on the winding roller; a connecting rope is passed through the second clamping blocks on the two transverse moving frames.

[0013] Preferably, a supporting rod is longitudinally fixed to the middle of the top surface of the movable frame, and the front and rear ends and the middle part of the top of the supporting rod are horizontally rotatable with direction-changing guide wheels, the front end of the movable frame is provided with rope threading holes for passing the connecting rope through, and the tops of the connecting plates at the front and rear ends of the movable frame are rotatably installed with guide wheels for changing the direction of the traction rope and the connecting rope by 90 degrees.

[0014] Preferably, the rope body of the connecting rope turns and passes around the turning guide wheel at the rear end of the supporting rod, and the two parallel rope bodies of the connecting rope are located on one side of the middle turning guide wheel, and the turned section of the rope body abuts against one side wheel body of the middle turning guide wheel; the guide wheel and the turning guide wheel are both provided with wire ring grooves.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention facilitates the linear movement type concrete crack scanning operation on the short-distance and discontinuous concrete retaining wall through the cooperation of the transverse movement component with the traction mechanism and the guide rail, and can realize the comprehensiveness of the crack exploration scanning in the crack scanning process; the two detection probes can make the whole achieve the scanning path of the serpentine motion trajectory, which can ensure the comprehensive coverage scanning of the crack as a whole, and there is no need for manual hand-held detection probes to scan the crack position, thereby improving the convenience and efficiency of concrete crack detection;

[0016] Through the cooperation of the transverse movement component with the traction mechanism and the auxiliary movement component, the present invention can enable the moving frame to stably move along the top of the concrete retaining wall under the action of the clamping roller, and can enable the moving frame to scan and detect cracks on the curved concrete retaining wall, thereby improving the applicability of the device when in use, and can automatically follow the curvature of the concrete retaining wall to automatically change direction, and can enable the moving frame to always be in a centered state when walking to scan and explore the cracks, thereby effectively improving the efficiency and practicality of detecting concrete cracks. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0018] Figure 1 It is a schematic diagram of the overall first-view structure of the present invention;

[0019] Figure 2 It is a schematic diagram of the overall second viewing angle structure of the present invention;

[0020] Figure 3 This is a schematic diagram of the internal structure of the protective cover of the present invention after the top cover is removed;

[0021] Figure 4 It is a schematic diagram of the top view of the structure of the present invention;

[0022] Figure 5 It is a schematic diagram of the structure of the moving frame and the guide rail of the present invention from a first viewing angle;

[0023] Figure 6 It is a schematic diagram of the structure of the moving frame and the guide rail of the present invention from a second viewing angle;

[0024] Figure 7 It is a cross-sectional view of the structure of the moving frame and the guide rail of one side of the present invention;

[0025] Figure 8 It is a schematic diagram of the first viewing angle structure of the moving frame and the horizontal moving frame of the present invention;

[0026] Fig. 9 It is a schematic diagram of the second viewing angle structure of the moving frame and the horizontal moving frame of the present invention;

[0027] Fig.10 It is a schematic diagram of the structure of the transverse moving frame, the scraping plate and the return spring of the present invention;

[0028] Fig.11 It is a schematic diagram of the structure of the transverse movement assembly, the transverse movement frame and the traction mechanism of the present invention;

[0029] Fig.12It is a schematic diagram of the positional relationship between the transverse moving assembly, the transverse moving frame and the scraping plate of the present invention;

[0030] Fig.13 It is a schematic diagram of the structure of two transverse moving frames of the present invention;

[0031] Fig.14 It is a schematic diagram of the three-dimensional structure of the driving mechanism of the present invention;

[0032] Fig.15 It is a structural schematic diagram of one side of the driving mechanism of the present invention.

[0033] Serial numbers in the figure: 1. guide rail; 2. connecting solenoid; 3. adjusting screw; 4. knob; 5. moving frame; 6. protective cover; 7. crack detector; 8. spiral wire; 9. connecting shaft; 10. clamping roller; 11. transverse frame; 12. traction seat; 13. electric push rod; 14. detection probe; 15. bidirectional screw; 16. moving block; 17. reset spring; 18. driving seat; 19. magnetic slider; 20. moving wheel; 21. driving motor; 22. magnetic strip; 23. limit plate; 24. first clamping block; 25. second clamping block; 26. traction rope; 27. reversing roller; 28. guide wheel; 29. ​​winding roller; 30. micro motor; 31. supporting rod; 32. variable guide wheel; 33. stabilizing tube; 34. sweeping plate; 35. connecting rope. DETAILED DESCRIPTION

[0034] 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 the embodiments.

[0035] Example 1: See Figures 1 to 15, a concrete crack detection device, comprising two guide rails 1 arranged parallel to each other and a connecting screw 2 fixedly connected to the two ends of the opposite surfaces of the guide rails 1, an adjusting screw 3 is screwed and connected between the connecting screw 2 between the ends of the two guide rails 1, and a knob 4 is fixedly sleeved on the middle part of the adjusting screw 3, a moving frame 5 is horizontally slidably arranged between the top surfaces of the two guide rails 1, a protective cover 6 is installed on the top of the moving frame 5, a fixed frame is installed on the top of the protective cover 6, and a crack detector 7 is placed on the fixed frame, a pair of spiral wires 8 are passed through the front end of the top of the protective cover 6, and a detection probe 14 for detecting cracks in concrete retaining walls is connected to the bottom end of the spiral wire 8; transverse frames 11 are slidably arranged on both sides of the top of the moving frame 5, a traction seat 12 is slidably arranged in the front end frame opening of one of the transverse frames 11, and a traction seat 12 is also slidably arranged in the rear end frame opening of the other transverse frame 11, a mounting opening is opened in the middle of the top surface of the traction seat 12, and an inverted electric push rod 13 is installed in the mounting opening, The measuring probe 14 is installed at the bottom of the telescopic end of the electric push rod 13; the front and rear ends of the top of the moving frame 5 are horizontally provided with moving grooves, and the moving grooves are provided with a transverse moving assembly for the synchronous movement of the two transverse moving frames 11; the moving frame 5 is provided with a traction mechanism for the offset movement of the two traction seats 12; the front and rear end surfaces of the moving frame 5 are provided with auxiliary moving assemblies; the four corners of the bottom of the moving frame 5 are slidably installed with a driving mechanism; through the cooperation of the transverse moving assembly with the traction mechanism and the guide rail 1, it is convenient to perform a linear moving concrete crack scanning operation on a short-distance and discontinuous concrete retaining wall, and it is possible to achieve comprehensive exploration scanning of the cracks during the crack scanning process; through the two detection probes 14, the overall scanning path of the serpentine motion trajectory can be achieved, which can ensure a full coverage scan of the entire crack, and there is no need for manual hand-held detection probes 14 to scan the crack position, thereby improving the convenience and efficiency of concrete crack detection.

[0036] Embodiment 2: The technical solution is basically the same as that of Embodiment 1, except that Figure 8 , Fig.14 , Fig.15As shown, the driving mechanism includes adjustment slots provided on both sides of the bottom of the moving frame 5, a magnetic slider 19 slidably arranged inside the adjustment slot, a driving seat 18 fixedly connected to the bottom of the magnetic slider 19, and a wheel axle longitudinally rotatably arranged in the lower part of the driving seat 18, the front and rear ends of the wheel axle are movable through the outside of the driving seat 18, and a moving wheel 20 is installed; battery packs are installed on both sides of the inner top surface of the protective cover 6, and the battery packs can be used to supply energy to various electrical appliances of the device, so that the device can be used outdoors, and the inner top surface of the adjustment slot is equipped with a magnetically matched magnetic slider 19. The magnetic strip 22 has storage grooves vertically provided at the front and rear ends of the top surface in the adjustment slot, and a limit plate 23 is vertically movably provided in the storage groove. The front and rear ends of the bottom surface of the magnetic strip 22 have through openings for the limit plate 23 to pass through. The top of the guide rail 1 has guide grooves along the length direction, and the moving wheels 20 at the front and rear ends of the driving seat 18 roll and abut in the guide grooves. A driving motor 21 is installed in the upper part of the driving seat 18, and a driving pulley is sleeved on the motor shaft of the driving motor 21, and a driven pulley is sleeved on the middle part of the wheel shaft, and a transmission belt is sleeved between the driving pulley and the driven pulley.

[0037] In the present invention, the auxiliary moving component includes a stabilizing hole opened on both sides of the front and rear ends of the moving frame 5, a connecting shaft 9 slidably arranged inside the stabilizing hole, an anti-slip plate fixedly connected to the inner end of the connecting shaft 9, and a clamping roller 10 rotatably installed on the outer end of the connecting shaft 9, and a reset spring 17 is sleeved on the connecting shaft 9 between the anti-slip plate and the inner wall of the moving frame 5; stabilizing tubes 33 that cover the reset spring 17 and the anti-slip plate are rotatably installed on both sides of the inside of the moving frame 5, and a scraping plate 34 in a vertical state is longitudinally installed at the bottom of the stabilizing tube 33. Through the arrangement of the stabilizing tube 33 and the scraping plate 34, it is convenient to automatically sweep away leaves or stones on the surface of the concrete retaining wall through the scraping plate 34 during the walking of the moving frame 5, so as to avoid affecting the subsequent crack detection scan.

[0038] Embodiment 3: The technical solution is basically the same as that of Embodiment 1, except that Fig. 9 Fig.13As shown, the transverse movement assembly includes a bidirectional lead screw 15 that is laterally rotatable and arranged inside the moving groove, a moving block 16 that is sleeved on both ends of the bidirectional lead screw 15, and a small motor coaxially installed at one end of the bidirectional lead screw 15, and the small motor is installed in a driving cavity inside one side of the moving frame 5. The front and rear ends of the transverse movement frame 11 are provided with connecting plates, and the bottom of the connecting plate is fixed to the top of the moving block 16 by bolts; the traction mechanism includes a reversing frame fixed at the front end corners of the opposite faces of the two transverse movement frames 11, a reversing roller 27 that is vertically rotatable and installed on the reversing frame, a positioning frame fixed at the rear end corners of the opposite faces of the two transverse movement frames 11, a winding roller 29 that is vertically rotatable and installed on the positioning frame, and a micro motor 30 that is arranged on the top of the positioning frame and is used to drive the winding roller 29, and a clamping groove is provided on the inner walls of the front and rear ends of the mounting port of the traction seat 12, and the clamping groove at the rear end of the mounting port is provided. A first clamping block 24 is vertically clamped, and a second clamping block 25 is vertically opened in the clamping groove at the front end. The rear end of the first clamping block 24 is fixedly connected with a traction rope 26, and the rear end of the traction rope 26 is wound and fixed on the winding roller 29; a connecting rope 35 is passed through the second clamping blocks 25 on the two transverse moving frames 11; through the cooperation of the transverse moving component with the traction mechanism and the auxiliary moving component, the moving frame 5 can stably walk along the top of the concrete retaining wall under the action of the clamping roller 10, and can scan and detect cracks on the concrete retaining wall with an arc, thereby improving the scope of application of the device when in use, and can automatically follow the arc of the concrete retaining wall to change direction automatically, so that the moving frame 5 is always in a centered state in the walking state to scan and explore the cracks, effectively improving the efficiency and practicality of detecting concrete cracks.

[0039] In the present invention, a supporting rod 31 is longitudinally fixed to the middle part of the top surface of the moving frame 5, and the front and rear ends and the middle part of the top of the supporting rod 31 are horizontally rotatably provided with a change-of-direction guide wheel 32, and the front end of the moving frame 5 is provided with a rope threading hole for the connecting rope 35 to pass through, and the top of the connecting plate of the front and rear ends of the moving frame 5 is rotatably installed with a guide wheel 28 for the traction rope 26 and the connecting rope 35 to change direction by 90 degrees; the rope body of the connecting rope 35 turns around the change-of-direction guide wheel 32 at the rear end of the supporting rod 31, and the two aligned rope bodies of the connecting rope 35 are located on one side of the middle change-of-direction guide wheel 32, and the turned section of the rope body abuts against one side wheel body of the middle change-of-direction guide wheel 32; the guide wheel 28 and the change-of-direction guide wheel 32 are provided with a wire ring groove, and the wire ring groove can improve the anti-line derailment effect when guiding the traction rope 26 and the connecting rope 35.

[0040] Working principle: In this embodiment, the present invention also proposes a method for using a concrete crack detection device, comprising the following steps:

[0041] Step 1: First, place two guide rails 1 on the concrete retaining wall where cracks are to be detected, and then turn the knob 4 to drive the adjusting screw 3 to adjust in the two connecting screw tubes 2, so that the two guide rails 1 can be connected and fixed; then remove the crack detector 7 from the top of the protective cover 6, and electrically connect the crack detector 7 to the detection probe 14 through the spiral wire 8, and wirelessly connect each electrical appliance in the device to the crack detector 7 through a wireless Bluetooth connection, so that the crack detector 7 can be used to control each electrical appliance in the device;

[0042] Step 2: After the guide rail 1 and the moving frame 5 are installed, the detection probe 14 is driven to descend by starting the electric push rod 13, and the monitoring probe is spaced one to five millimeters apart from the surface of the concrete retaining wall. Then, according to the crack direction of the concrete retaining wall, a small motor is selected to start to drive the bidirectional lead screw 15 to rotate. The rotation of the bidirectional lead screw 15 can enable the moving block 16 to drive the two transverse moving frames 11 to move in relative or opposite directions, thereby driving the detection probe 14 to scan and explore the crack depth of the transverse crack. The detection probe 14 can scan the depth of the transverse crack on the concrete retaining wall;

[0043] Step three, since the direction and depth of the cracks are irregular, during the lateral scanning process, by synchronously starting the two micro motors 30 to rotate in opposite directions, it is convenient to realize that when one traction rope 26 is rolled up, the other traction rope 26 is unrolled, so as to meet the path requirements of the two traction seats 12 for relative movement, and the movement trajectory of the two traction seats 12 can be a serpentine trajectory, which can effectively improve the comprehensiveness of the detection probe 14 that moves with the traction seat 12 to scan the cracks. The two detection probes 14 can make the overall scanning path of the serpentine motion trajectory reach the scanning path, which can ensure that the cracks are scanned in all directions;

[0044] Step 4: When the cracks on the concrete retaining wall are long, the driving motor 21 is started to drive the wheel shaft to rotate, and the rotating wheel shaft drives the moving wheel 20 to move in the guide groove of the guide rail 1. When the four groups of moving wheels 20 move in the same direction, the moving frame 5 can be driven to perform an overall transverse movement operation, which is convenient for automatic scanning of cracks with longer lengths, and the transverse movement component can realize continuous scanning of short-distance cracks;

[0045] Step five, when crack detection is performed on the top surface of the concrete retaining wall, when the guide rail 1 is not used, the connecting shaft 9 can be stretched outward and the bent outer end of the connecting shaft 9 can be deflected downward, so that the clamping rollers 10 can be clamped on both sides of the concrete retaining wall. This can improve the stability of the moving frame 5 when scanning while moving, and enable the moving frame 5 to stably move along the top of the concrete retaining wall under the action of the clamping rollers 10. The moving frame 5 can perform crack scanning and detection on a curved concrete retaining wall, thereby improving the scope of application of the device when used.

[0046] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A concrete crack detection device, comprising two guide rails (1) arranged parallel to each other and connecting screw tubes (2) fixedly connected to opposite ends of the guide rails (1), characterized in that: An adjusting screw (3) is screwed and connected between the connecting screw tubes (2) between the ends of the two guide rails (1), a knob (4) is fixedly sleeved in the middle of the adjusting screw (3), a moving frame (5) is horizontally slidably provided between the top surfaces of the two guide rails (1), a protective cover (6) is installed on the top of the moving frame (5), a fixing frame is installed on the top of the protective cover (6), a crack detector (7) is placed on the fixing frame, a pair of spiral wires (8) are passed through the front end of the top of the protective cover (6), and a detection probe (14) for detecting cracks in the concrete retaining wall is connected to the bottom end of the spiral wire (8); Both sides of the top of the moving frame (5) are slidably provided with a transverse moving frame (11), a traction seat (12) is slidably provided in the front frame opening of one of the transverse moving frames (11), and a traction seat (12) is slidably provided in the rear frame opening of the other transverse moving frame (11), a mounting opening is provided in the middle of the top surface of the traction seat (12), an inverted electric push rod (13) is installed in the mounting opening, and a detection probe (14) is installed at the bottom of the telescopic end of the electric push rod (13); the top front and rear ends of the moving frame (5) are both transversely provided with moving grooves, and a transverse moving assembly for synchronous movement of the two transverse moving frames (11) is installed in the moving groove; A traction mechanism for dislocation movement of two traction seats (12) is provided in the moving frame (5); auxiliary moving components are provided on the front and rear end surfaces of the moving frame (5); and driving mechanisms are slidably mounted on the four corners of the bottom of the moving frame (5); The transverse movement assembly comprises a bidirectional lead screw (15) arranged inside the moving groove for transverse rotation, a moving block (16) sleeved on both ends of the bidirectional lead screw (15), and a small motor coaxially mounted on one end of the bidirectional lead screw (15), the small motor being mounted in a driving cavity inside one side of the moving frame (5), and connecting plates being provided at the front and rear ends of the transverse movement frame (11), the bottom of the connecting plate being fixedly connected to the top of the moving block (16) by bolts; The traction mechanism comprises a reversing frame fixedly arranged at the front end corner of the two lateral moving frames (11), a reversing roller (27) mounted vertically and rotatably on the reversing frame, a positioning frame fixedly arranged at the rear end corner of the two lateral moving frames (11), a winding roller (29) mounted vertically and rotatably on the positioning frame, and a micro motor (30) arranged on the top of the positioning frame for driving the winding roller (29); a clamping groove is provided on the front and rear end inner walls of the mounting opening of the traction seat (12); a first clamping block (24) is vertically clamped in the clamping groove at the rear end of the mounting opening; a second clamping block (25) is vertically clamped in the clamping groove at the front end; a traction rope (26) is fixedly connected to the rear end of the first clamping block (24); and the rear end of the traction rope (26) is wound and fixed on the winding roller (29); a connecting rope (35) is passed through the second clamping blocks (25) on the two lateral moving frames (11); A supporting rod (31) is longitudinally fixedly connected to the middle of the top surface of the moving frame (5); the front and rear ends and the middle of the top of the supporting rod (31) are both horizontally rotatably provided with direction-changing guide wheels (32); the front end of the moving frame (5) is provided with a rope threading hole for passing a connecting rope (35); the tops of the connecting plates at the front and rear ends of the moving frame (5) are both rotatably provided with guide wheels (28) for changing the direction of the traction rope (26) and the connecting rope (35) by 90 degrees.

2. A concrete crack detection device according to claim 1, characterized in that: The driving mechanism comprises adjustment slots provided on both sides of the bottom of the moving frame (5), a magnetic slider (19) slidably arranged inside the adjustment slots, a driving seat (18) fixedly connected to the bottom of the magnetic slider (19), and a wheel axle longitudinally rotatably arranged inside the lower part of the driving seat (18), the front and rear ends of the wheel axle both movably pass through the outside of the driving seat (18) and are equipped with moving wheels (20), and battery packs are installed on both sides of the inner top surface of the protective cover (6).

3. A concrete crack detection device according to claim 2, characterized in that: The inner top surface of the adjustment slot is provided with a magnetic strip (22) that magnetically cooperates with the magnetic slider (19), the front and rear ends of the inner top surface of the adjustment slot are vertically provided with a receiving slot, a limit plate (23) is vertically movably provided in the receiving slot, and the front and rear ends of the bottom surface of the magnetic strip (22) are provided with a through opening for the limit plate (23) to pass through.

4. A concrete crack detection device according to claim 3, characterized in that: The top of the guide rail (1) is provided with a guide groove along the length direction, and the moving wheels (20) at the front and rear ends of the drive seat (18) roll and abut against the guide groove; a drive motor (21) is installed in the upper part of the drive seat (18), a driving pulley is sleeved on the motor shaft of the drive motor (21), a driven pulley is sleeved on the middle part of the wheel shaft, and a transmission belt is sleeved between the driving pulley and the driven pulley.

5. A concrete crack detection device according to claim 1, characterized in that: The auxiliary moving assembly comprises stabilizing holes formed on both sides of the front and rear ends of the moving frame (5), a connecting shaft (9) slidably arranged inside the stabilizing hole, an anti-slip plate fixedly connected to the inner end of the connecting shaft (9), and a clamping roller (10) rotatably mounted on the outer end of the connecting shaft (9), and a return spring (17) is sleeved on the connecting shaft (9) between the anti-slip plate and the inner wall of the moving frame (5).

6. A concrete crack detection device according to claim 5, characterized in that: Stabilizing tubes (33) that cover a return spring (17) and an anti-slip plate are rotatably mounted on both sides of the movable frame (5), and a scraping plate (34) in a vertical state is longitudinally mounted on the bottom of the stabilizing tube (33).

7. A concrete crack detection device according to claim 1, characterized in that: The rope body of the connecting rope (35) turns and passes around the deflection guide wheel (32) at the rear end of the supporting rod (31), and the two parallel rope bodies of the connecting rope (35) are located on one side of the middle deflection guide wheel (32), and the turning section of the rope body abuts against a wheel body on one side of the middle deflection guide wheel (32); the guide wheel (28) and the deflection guide wheel (32) are both provided with a wire ring groove.

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