Concrete crack detection device based on visual analysis

Abstract

The invention discloses a concrete crack detection device based on visual analysis, relates to the field of concrete crack detection, solves the problem that an existing crack detection device is easily blocked by moss and dust floating materials on a bridge during detection, and comprises a device shell and a mounting frame arranged on the outer side of the device shell, mounting boxes are fixedly mounted at the top and the bottom of the mounting frame, a detection probe is arranged between the two mounting boxes, a mounting plate is fixedly mounted at the bottom of the mounting frame, and a cleaning roller is arranged on the inner side of the device shell; the dust removing mechanism is used for enabling the cleaning roller to clean dust and floating materials adhered to the bridge, and the dust removing mechanism is mounted between the two mounting boxes; by means of the dust removal mechanism, dust and moss adhering to the surface of the bridge are removed, the problem that concrete cracks are blocked by the dust and the moss is solved, and therefore the effects of comprehensive detection and impurity removal are achieved.

Description

Technical Field

[0001] The present invention relates to the field of concrete crack detection, and in particular to a concrete crack detection device based on visual analysis. Background Art

[0002] Concrete crack identification is an important engineering inspection work, which involves the safety and stability of buildings. In concrete structures, cracks are a common disease phenomenon, and their causes are varied, such as material shrinkage, temperature changes, load effects, etc. Therefore, accurate identification and evaluation of concrete cracks is of great significance to ensuring the safety of buildings.

[0003] Concrete crack detection is one of the important items of bridge inspection. The detection equipment is usually installed on an inspection vehicle, which travels along the bridge deck so that the inspection equipment can inspect the bridge. The existing Chinese published patent document: CN116359225A discloses a concrete crack detection device and detection method. During the inspection, the bottom of the bridge can be photographed and transmitted to a display by using a belt conveyor to drive a camera to move back and forth. The inspection personnel can observe the images captured by the camera through the display to detect the concrete cracks at the bottom of the bridge. However, the bridge is above the water surface for a long time, so that the bridge will be covered with a certain amount of moss or dust floating on the bridge, and the relatively small cracks will be covered. When the camera moves along the bridge to shoot, these moss and dust floating will hinder the capture of the cracks, affecting the accuracy of crack detection. Summary of the Invention

[0004] The purpose of the present invention is to provide a concrete crack detection device based on visual analysis to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions: A concrete crack detection device based on visual analysis comprises: a device shell and a mounting frame arranged on the outside of the device shell, which is used to fix the device shell on a suspended truss for easy installation, the top and bottom of the mounting frame are fixedly installed with mounting boxes, a detection probe is arranged between the two mounting boxes, which is used to monitor cracks in bridge concrete, a mounting plate is fixedly installed on the bottom of the mounting frame, a cleaning roller is arranged on the inner side of the device shell, which is used to clean dust on the surface of the bridge; it also includes: a dust removal mechanism, which is used to enable the cleaning roller to clean dust and floating materials sticking to the bridge, and the dust removal mechanism is installed between the two mounting boxes; a slag blocking mechanism, which is used to provide dust blocking and protection for the detection probe, and the slag blocking mechanism is installed on the inner side of the device shell; a slag pushing mechanism, which is used to push impurities accumulated on the inner side of the device shell, and the slag pushing mechanism is installed on the inner side of the device shell.

[0006] Preferably, the dust removal mechanism includes an electric screw arranged above the device housing, the output end of the electric screw being rotatably installed between the two mounting boxes, the driving end of the electric screw being fixedly installed on the top of the mounting box on the top of the device housing, and the moving end of the electric screw being fixedly installed with a moving plate, so that when the electric screw is running, it can drive the moving plate to move up and down reciprocatingly, and a moving block is fixedly installed on the outer side of the moving plate, and a limit rod sliding through the moving block is fixedly installed between the two mounting boxes to provide a guide for the movement of the moving block, and the detection probe is fixedly installed at one end of the moving block, and the moving block is away from the detection A detector is fixedly installed at one end of the probe, and the detector is docked with the detection probe through the moving block, so that the detection probe can move back and forth along the surface of the bridge, which is convenient for comprehensive photography of the cracks and transmission of data to the detector for detection. A rotating shaft extending to the inside of the installation box is fixedly installed on the inner side of the cleaning roller, and a synchronous belt is rotatably installed between the rotating shaft and the output end of the electric screw, so that when the electric screw is running, the synchronous rotation of the cleaning roller can be achieved through the synchronous belt. The rotating shaft is rotatably installed on the inner side of the device housing, and a spiral scraper is fixedly installed on the outer side of the cleaning roller for scraping out dust and moss sticking to the surface of the bridge.

[0007] Preferably, the slag blocking mechanism includes a baffle slidably mounted on the device housing, the baffle being located between the cleaning roller and the detection probe, a scraper being fixedly mounted on the outer side of the baffle, the baffle cooperating with the scraper to provide shielding for the detection probe to prevent dust from interfering with the detection probe's shooting and scraping out dust and moss remaining on the bridge surface, a plurality of sliders 1 being fixedly mounted on the side of the baffle away from the cleaning roller and being vertically and equidistantly distributed, a sliding cavity 1 for limiting the sliding of the slider 1 is provided on the outer side of the device housing, a sliding rod 1 sliding through the slider 1 is fixedly mounted on the inner side of the sliding cavity 1, a spring 1 is provided on the outer side of the sliding rod 1, and the elasticity of the spring 1 is utilized to make the scraper adhere to the surface of the bridge, so as to facilitate dealing with the uneven bridge surface, and the spring 1 is fixedly mounted between the slider 1 and the inner side of the sliding cavity 1.

[0008] The cam is fixedly mounted on one side of the cleaning roller and has a first end fixedly mounted on the cleaning roller, the first end of the cleaning roller being in contact with the outer side of the cleaning roller and the second end of the cleaning roller being in contact with the cleaning roller.

[0009] Preferably, three equidistantly distributed support rods are fixedly installed on the side of the device housing away from the cleaning roller, a fixing plate is fixedly installed between the three support rods, the support rods pass through the mounting frame, and a spring three is provided on the outside of the support rods. The spring three is fixedly installed between the device housing and the mounting frame, so that when the device housing is close to the bridge, the elastic force of the spring three is used to provide buffering.

[0010] Preferably, a plurality of mounting seats 1 in a rectangular array are fixedly installed on the side of the device housing away from the mounting frame, and a mounting seat 2 is fixedly installed on the side of the mounting box away from the mounting frame. Rolling balls are rotatably installed on the outer sides of the mounting seat 1 and the mounting seat 2 to facilitate support against the outer side of the bridge and movement.

[0011] Preferably, a discharge pipe is fixedly mounted on one side of the device housing close to the mounting frame, and the discharge pipe is in an inclined structure to facilitate the discharge of dust and moss impurities that enter the device housing.

[0012] Preferably, a protective shell is fixedly installed between the two mounting boxes, the movable end of the electric screw contacts the inner side of the protective shell, and the outer side of the protective shell is provided with a sliding groove for limiting the sliding of the movable plate, providing dust protection for the output end of the electric screw.

[0013] Preferably, a fan located above the cleaning roller is fixedly mounted on the outer side of the rotating shaft for blowing away the residue on the cleaning roller.

[0014] Preferably, a barb is fixedly mounted on one end of the push bar away from the positioning block for scraping harder fragments.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The present invention uses a dust removal mechanism to enable the detection probe to move back and forth up and down along the surface of the bridge, which is convenient for rapid detection of concrete cracks on the bridge surface, and can keep the cleaning roller rotating. When the mounting frame moves, the dust and moss sticking to the bridge surface are first cleaned, solving the problem of dust and moss blocking concrete cracks, thereby achieving the effect of comprehensive detection and impurity cleaning.

[0016] The present invention uses a slag blocking mechanism to block the dust cleaned by the cleaning roller through the baffle when the device shell moves, preventing it from affecting the detection probe, and can scrape off harder impurities, thereby improving the processing efficiency of dust, impurities and moss, thereby achieving the effect of improving detection accuracy.

[0017] The present invention uses a slag pushing mechanism, so that when the moving block moves back and forth, the pressure column presses multiple resistance columns once, so that the pushing strips move back and forth along the surface of the baffle and the scraper, which is convenient for repeatedly pushing and pulling the dust and moss remaining on the baffle and the scraper, preventing the accumulation of dust and moss, thereby achieving the effect of facilitating material discharge. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 Schematic diagram of the structure of the movable plate and the detection probe in the present invention; Figure 3 This is a schematic diagram of the fan and mounting box structure of the present invention; Figure 4 Schematic diagram of the structure of the moving block and the pressure column in the present invention; Figure 5 This is a schematic diagram of the structure of the fixed plate and the discharge pipe in the present invention; Figure 6 for Figure 2 Schematic diagram of the enlarged structure of area A in the middle; Figure 7 Schematic diagram of the structure of the barb and scraper in the present invention; Figure 8 This is a schematic diagram of the push bar and baffle structure in the present invention.

[0019] In the figure: 1. Device housing; 2. Mounting frame; 3. Mounting box; 4. Detection probe; 5. Mounting plate; 6. Cleaning roller; 7. Electric screw; 8. Moving plate; 9. Moving block; 10. Limit rod; 11. Detector; 12. Rotating shaft; 13. Synchronous belt; 14. Spiral scraper; 15. Baffle; 16. Scraper; 17. Slider 1; 18. Slider 1; 19. Spring 1; 20. Push bar; 21. Positioning block; 22. Slider 2; 23. Slider 2; 24. Spring 2; 25. Column; 26. Pressure column; 27. Support rod; 28. Fixed plate; 29. ​​Spring 3; 30. Mounting base 1; 31. Mounting base 2; 32. Ball; 33. Discharge pipe; 34. Protective shell; 35. Fan; 36. Hook. DETAILED DESCRIPTION

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative inspiration shall fall within the scope of protection of the present invention.

[0021] Example 1: Please refer to Figures 1-8 , a concrete crack detection device based on visual analysis shown in the figure includes a device shell 1 and a mounting frame 2 arranged on the outside of the device shell 1, which is used to fix the device shell 1 on a suspended truss for easy installation. The top and bottom of the mounting frame 2 are fixedly installed with mounting boxes 3, and a detection probe 4 is arranged between the two mounting boxes 3 for monitoring cracks in bridge concrete. A mounting plate 5 is fixedly installed at the bottom of the mounting frame 2, and a cleaning roller 6 is arranged on the inner side of the device shell 1 for cleaning dust on the surface of the bridge; it also includes: a dust removal mechanism for enabling the cleaning roller 6 to clean dust and floating materials sticking to the bridge, and the dust removal mechanism is installed between the two mounting boxes 3; a slag blocking mechanism for providing dust blocking and protection for the detection probe 4, and the slag blocking mechanism is installed on the inner side of the device shell 1; a slag pushing mechanism for pushing impurities accumulated on the inner side of the device shell 1, and the slag pushing mechanism is installed on the inner side of the device shell 1.

[0022] The dust removal mechanism includes an electric screw 7 arranged above the device housing 1, the output end of the electric screw 7 is rotatably installed between the two mounting boxes 3, the driving end of the electric screw 7 is fixedly installed on the top of the mounting box 3 on the top of the device housing 1, and the moving end of the electric screw 7 is fixedly installed with a moving plate 8, so that when the electric screw 7 is running, it can drive the moving plate 8 to move up and down. A moving block 9 is fixedly installed on the outside of the moving plate 8, and a limiting rod 10 that slides through the moving block 9 is fixedly installed between the two mounting boxes 3 to provide a guide for the movement of the moving block 9. The detection probe 4 is fixedly installed at one end of the moving block 9, and the end of the moving block 9 away from the detection probe 4 is fixedly installed with a Detector 11, the detector 11 is docked with the detection probe 4 through the moving block 9, so that the detection probe 4 can move back and forth along the bridge surface, which is convenient for comprehensive imaging of cracks and transmitting data to the detector 11 for detection. The inner side of the cleaning roller 6 is fixedly installed with a rotating shaft 12 extending to the inner side of the installation box 3. A synchronous belt 13 is rotatably installed between the rotating shaft 12 and the output end of the electric screw 7, so that when the electric screw 7 is running, the synchronous rotation of the cleaning roller 6 can be achieved through the synchronous belt 13. The rotating shaft 12 is rotatably installed on the inner side of the device housing 1, and a spiral scraper 14 is fixedly installed on the outer side of the cleaning roller 6 for scraping off dust and moss sticking to the bridge surface; When the electric screw 7 is in operation, it can drive the moving plate 8 to move up and down through its moving end, so that the moving plate 8 drives the moving block 9 to move synchronously along the outside of the limit rod 10, and the moving block 9 drives the detection probe 4 to move along the concrete cracks on the bridge surface, comprehensively photographing the cracks, and transmitting the data information to the detector 11 for detection. The detection vehicle can drive the mounting frame 2 to move through the suspension truss, so that the mounting frame 2 drives the device housing 1 to move along the surface of the bridge. The output end of the electric screw 7 drives the rotating shaft 12 to rotate through the synchronous belt 13, so that the rotating shaft 12 drives the cleaning roller 6 to rotate synchronously. The cleaning roller 6 can move with the movement of the device housing 1, and the spiral scraper 14 can be used to scrape off the dust and moss sticking to the surface of the bridge to prevent dust and moss from blocking the cracks, thereby achieving the effect of comprehensive detection and impurity cleaning.

[0023] The slag blocking mechanism includes a baffle 15 slidably mounted on the device housing 1, the baffle 15 is located between the cleaning roller 6 and the detection probe 4, and a scraper 16 is fixedly mounted on the outside of the baffle 15. The baffle 15 cooperates with the scraper 16 to provide a shield for the detection probe 4 to prevent dust from interfering with the shooting of the detection probe 4 and scraping out the dust and moss remaining on the surface of the bridge. A plurality of sliders 17 are fixedly mounted on the side of the baffle 15 away from the cleaning roller 6 and are vertically and equidistantly distributed. A sliding cavity 1 is provided on the outside of the device housing 1 for limiting the sliding of the slider 17, and a sliding rod 18 is fixedly mounted on the inside of the sliding cavity 1, which slides through the slider 17. A spring 19 is provided on the outside of the sliding rod 18. The elasticity of the spring 19 is used to make the scraper 16 adhere to the surface of the bridge, so as to cope with the uneven surface of the bridge. The spring 19 is fixedly mounted between the slider 17 and the inner side of the sliding cavity 1. When the device housing 1 moves, it can drive the baffle 15 to move synchronously, so that when the cleaning roller 6 scrapes the dust and moss on the surface of the bridge, it provides a barrier for the scraped dust to prevent the dust from affecting the detection probe 4, ensuring the normal shooting of the detection probe 4, and the baffle 15 drives the scraper 16 to move along the surface of the bridge, so as to facilitate the scraping of residual dust. When the scraper 16 contacts the uneven surface of the bridge, the scraper 16 drives the slider 17 to move along the outside of the slide rod 18 through the baffle 15, compressing the spring 19, and using the rebound force of the spring 19 to keep the scraper 16 in contact with the surface of the bridge, thereby achieving the effect of improving the detection accuracy.

[0024] The slag pushing mechanism includes a plurality of push strips 20 arranged vertically and equidistantly on the side of the baffle 15 close to the cleaning roller 6. The push strips 20 are in contact with the outer side of the baffle 15. A positioning block 21 is fixedly installed on the end of the push strip 20 away from the scraper 16. A slider 22 is fixedly installed on the outer side of the positioning block 21. A sliding cavity 2 for limiting the sliding of the slider 22 is opened on the outer side of the device housing 1. A slide rod 23 that slides through the slider 22 is fixedly installed on the inner side of the slide cavity 2. A spring 24 is provided on the outer side of the slide rod 23. , so that when the slider 22 moves, the rebound force of the spring 24 can be used to facilitate the slider 22 to drive the positioning block 21 to reset the push strip 20. The spring 24 is fixedly installed between the inner side of the sliding cavity 2 and the slider 22. The end of the slider 22 away from the positioning block 21 is fixedly installed with a support column 25. The side of the moving block 9 close to the device housing 1 is fixedly installed with a pressure column 26. When the moving block 9 moves, it can push the support column 25 to move through the pressure column 26, thereby realizing the alternating movement of multiple push strips 20. When the moving block 9 moves, it drives the pressure column 26 and the outer side of the support column 25 to move, and the arc surface of the pressure column 26 moves along the arc surface of the support column 25, so that the support column 25 drives the slider 22 to move along the outer side of the slide rod 23 and compresses the spring 24. The slider 22 drives the push bar 20 to move along the outer side of the baffle 15 and the scraper 16 through the positioning block 21, pushing and pulling the dust and moss accumulated on the surface of the baffle 15 and the scraper 16, and with the movement of the moving block 9, the alternating movement of multiple push bars 20 is realized, which facilitates the discharge of dust and moss accumulated on the baffle 15 and the scraper 16, thereby achieving the effect of facilitating material discharge and ensuring continuous monitoring of the detection probe 4.

[0025] Working principle: First, the user fixes the mounting plate 5 on the truss of the detection vehicle suspension, so that the mounting frame 2 drives the device housing 1 to lean against the surface of the bridge. At this time, the user starts the electric screw 7, and the moving end of the electric screw 7 drives the moving plate 8 to move up and down, so that the moving plate 8 drives the moving block 9 to move synchronously along the outside of the limit rod 10. The moving block 9 can drive the detection probe 4 to move along the concrete cracks on the bridge surface, take a comprehensive picture of the cracks, and transmit the data information to the detector 11 for detection. At this time, the detection vehicle keeps moving, so that the suspension truss drives the mounting frame 2 to move, and the mounting frame 2 drives the device housing 1 to move along the surface of the bridge. At the same time, the output end of the electric screw 7 drives the rotating shaft 12 to rotate through the synchronous belt 13, so that the rotating shaft 12 drives the spiral scraper 14 on the cleaning roller 6 to rotate synchronously. As the device housing 1 moves, the spiral scraper 14 scrapes off the dust and moss sticking to the surface of the bridge. At the same time, the device housing 1 drives the baffle 15 to move synchronously, so that the scraper 16 on the baffle 15 moves along the surface of the bridge, removing the residual The dust and impurities are scraped away, and the baffle 15 is blocked between the detection probe 4 and the cleaning roller 6, providing protection for the detection probe 4, preventing the dust from obstructing the shooting of the detection probe 4, and improving the accuracy of the detection. As the dust and moss accumulate on the surface of the scraper 16 and the baffle 15, and the movement of the moving block 9, the pressure column 26 is driven to move synchronously, and the arc surface of the pressure column 26 moves along the arc surface of the support column 25, so that the pressure column 26 pushes the support column 25 to move, and the support column 25 can drive the slider 22 to move along the outer side of the slide rod 23 and press the spring 22. 4 is compressed, and the slider 22 drives the push strip 20 to move along the outer side of the baffle 15 and the scraper 16 through the positioning block 21, pushing and pulling the dust and moss accumulated on the surface of the baffle 15 and the scraper 16, and with the movement of the moving block 9, the multiple push strips 20 are alternately moved back and forth, so that the dust and moss accumulated on the baffle 15 and the scraper 16 can be discharged, which is convenient for the detection probe 4 to continuously detect the bridge, thereby achieving the effect of comprehensive detection and automatic cleaning, and improving the accuracy of the detection probe 4 in detecting concrete cracks.

[0026] Example 2: Please refer to Figure 2 、 Figure 5 and Figure 6 , this embodiment further explains Example 1. Three equidistantly distributed support rods 27 are fixedly installed on the side of the device housing 1 away from the cleaning roller 6 in the figure. A fixing plate 28 is fixedly installed between the three support rods 27. The support rods 27 pass through the mounting frame 2. A spring three 29 is provided on the outside of the support rod 27. The spring three 29 is fixedly installed between the device housing 1 and the mounting frame 2, so that when the device housing 1 is close to the bridge, the elastic force of the spring three 29 is used to provide buffering. A plurality of rectangular array mounting seats 30 are fixedly installed on the side of the device housing 1 away from the mounting frame 2, and a mounting seat 2 31 is fixedly installed on the side of the mounting box 3 away from the mounting frame 2. Rolling balls 32 are rotatably installed on the outsides of the mounting seats 1 30 and the mounting seats 2 31 to facilitate the support against the outside of the bridge and movement.

[0027] In this embodiment: the device housing 1 can contact the surface of the bridge through the balls 32 on the mounting seat 1 30 and the mounting seat 2 31, so that the device housing 1 can move at multiple angles along the surface of the bridge, and when the device housing 1 is close to the surface of the bridge, the rebound force of the spring 3 29 is used to enable the support rod 27 to move along the inner side of the mounting frame 2, providing a buffer for the pressure between the device housing 1 and the bridge surface, and facilitating movement along the uneven surface of the bridge, thereby improving the stability of the device housing 1 during movement.

[0028] Example 3: Please refer to Figure 2-Figure 7 , this embodiment further explains other embodiments. A discharge pipe 33 is fixedly installed on one side of the device housing 1 close to the mounting frame 2 in the figure. The discharge pipe 33 is an inclined structure, which is convenient for discharging dust and moss impurities entering the device housing 1. A protective shell 34 is fixedly installed between the two mounting boxes 3. The moving end of the electric screw 7 contacts the inner side of the protective shell 34. The outer side of the protective shell 34 is provided with a slide groove for the limited sliding of the movable plate 8, providing a dust-proof barrier for the output end of the electric screw 7. A fan 35 located above the cleaning roller 6 is fixedly installed on the outer side of the rotating shaft 12 for blowing and cleaning the residue on the cleaning roller 6. A barb 36 is fixedly installed on the end of the push strip 20 away from the positioning block 21 for scraping harder fragments.

[0029] In this embodiment: the moss and dust impurities in the device housing 1 can be discharged through the inclined discharge pipe 33, preventing a large amount of moss and dust impurities from accumulating in the device housing 1, and the protective shell 34 can provide protection for the electric screw 7 to prevent a small amount of dust from entering the outside of the electric screw 7 when the device housing 1 moves, thereby ensuring the smooth movement of the moving end of the electric screw 7, and when the rotating shaft 12 rotates, it can drive the fan 35 to rotate synchronously, so that the air flow in the device housing 1 flows downward, which is convenient for cleaning the dust impurities remaining on the surface of the cleaning roller 6. When the push strip 20 moves, the barb 36 on the push strip 20 can scrape the harder fragments on the baffle 15, and can quickly separate the accumulated dust and moss, so that the dust and moss are discharged loosely.

[0030] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0031] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A concrete crack detection device based on visual analysis, characterized in that: include: A device housing (1) and a mounting frame (2) arranged outside the device housing (1), a mounting box (3) being fixedly mounted on the top and bottom of the mounting frame (2), a detection probe (4) being arranged between the two mounting boxes (3), a mounting plate (5) being fixedly mounted on the bottom of the mounting frame (2), and a cleaning roller (6) being arranged on the inner side of the device housing (1); Also includes: A dust removal mechanism, used to enable the cleaning roller (6) to clean dust and floating materials adhering to the bridge, the dust removal mechanism being installed between the two installation boxes (3); A slag blocking mechanism, used for providing dust blocking and protection for the detection probe (4), the slag blocking mechanism being installed on the inner side of the device housing (1); The slag pushing mechanism is used to push impurities accumulated inside the device housing (1), and the slag pushing mechanism is installed inside the device housing (1).

2. The concrete crack detection device based on visual analysis according to claim 1, characterized in that: The dust removal mechanism comprises an electric screw (7) arranged above the device housing (1), the output end of the electric screw (7) is rotatably mounted between the two mounting boxes (3), the driving end of the electric screw (7) is fixedly mounted on the top of the mounting box (3) at the top of the device housing (1), the moving end of the electric screw (7) is fixedly mounted with a moving plate (8), the outer side of the moving plate (8) is fixedly mounted with a moving block (9), a limiting rod (10) that slides through the moving block (9) is fixedly mounted between the two mounting boxes (3), and the detection probe (4) is fixedly mounted on A detector (11) is fixedly mounted on one end of the moving block (9), the end of the moving block (9) away from the detection probe (4), and the detector (11) is docked with the detection probe (4) through the moving block (9). A rotating shaft (12) extending to the inside of the installation box (3) is fixedly mounted on the inner side of the cleaning roller (6), and a synchronous belt (13) is rotatably mounted between the rotating shaft (12) and the output end of the electric screw (7). The rotating shaft (12) is rotatably mounted on the inner side of the device housing (1), and a spiral scraper (14) is fixedly mounted on the outer side of the cleaning roller (6).

3. The concrete crack detection device based on visual analysis according to claim 2, characterized in that: The slag blocking mechanism includes a baffle (15) slidably mounted on the device housing (1), the baffle (15) is located between the cleaning roller (6) and the detection probe (4), a scraper (16) is fixedly mounted on the outer side of the baffle (15), a plurality of vertically equidistantly distributed sliders (17) are fixedly mounted on the side of the baffle (15) away from the cleaning roller (6), a sliding cavity (1) for limiting the sliding of the slider (17) is provided on the outer side of the device housing (1), a sliding rod (18) sliding through the slider (17) is fixedly mounted on the inner side of the sliding cavity, a spring (19) is provided on the outer side of the sliding rod (18), and the spring (19) is fixedly mounted between the slider (17) and the inner side of the sliding cavity.

4. The concrete crack detection device based on visual analysis according to claim 3, characterized in that: The slag pushing mechanism includes a plurality of push bars (20) arranged at equal intervals vertically on the side of the baffle (15) close to the cleaning roller (6), the push bars (20) contacting the outer side of the baffle (15), a positioning block (21) fixedly installed on the end of the push bar (20) away from the scraper (16), a slider (22) fixedly installed on the outer side of the positioning block (21), a sliding cavity (2) for limiting the sliding of the slider (22) is provided on the outer side of the device housing (1), a sliding rod (23) sliding through the slider (22) is fixedly installed on the inner side of the sliding cavity (2), a spring (24) is provided on the outer side of the sliding rod (23), and the spring (24) is fixedly installed between the inner side of the sliding cavity (2) and the slider (22), a support column (25) fixedly installed on the end of the slider (22) away from the positioning block (21), and a pressure column (26) fixedly installed on the side of the moving block (9) close to the device housing (1).

5. The concrete crack detection device based on visual analysis according to claim 1, characterized in that: Three equally spaced support rods (27) are fixedly mounted on a side of the device housing (1) away from the cleaning roller (6), a fixing plate (28) is fixedly mounted between the three support rods (27), the support rods (27) pass through the mounting frame (2), a spring (29) is provided on the outside of the support rods (27), and the spring (29) is fixedly mounted between the device housing (1) and the mounting frame (2).

6. The concrete crack detection device based on visual analysis according to claim 2, characterized in that: A plurality of mounting seats (30) in a rectangular array are fixedly mounted on a side of the device housing (1) away from the mounting frame (2), and a mounting seat (31) is fixedly mounted on a side of the mounting box (3) away from the mounting frame (2). Rolling balls (32) are rotatably mounted on the outer sides of both the mounting seat (30) and the mounting seat (31).

7. The concrete crack detection device based on visual analysis according to claim 2, characterized in that: A discharge pipe (33) is fixedly mounted on one side of the device housing (1) close to the mounting frame (2), and the discharge pipe (33) is in an inclined structure.

8. The concrete crack detection device based on visual analysis according to claim 2, characterized in that: A protective shell (34) is fixedly installed between the two installation boxes (3), the movable end of the electric screw (7) contacts the inner side of the protective shell (34), and the outer side of the protective shell (34) is provided with a sliding groove for the movable plate (8) to slide in a limited position.

9. The concrete crack detection device based on visual analysis according to claim 4, characterized in that: A fan (35) located above the cleaning roller (6) is fixedly mounted on the outer side of the rotating shaft (12).

10. The concrete crack detection device based on visual analysis according to claim 4, characterized in that: A barb (36) is fixedly mounted on one end of the push bar (20) away from the positioning block (21).

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