A concrete crack detection device based on visual analysis

Abstract

The application discloses a kind of concrete crack detection devices based on visual analysis, it is related to concrete crack detection field, it solves the problem that existing crack detection device is easily blocked by moss and dust floating material on bridge when detecting, including: device shell and the mounting bracket of being arranged in the outside of device shell, the top and bottom of mounting bracket are fixedly installed with installation box, detection probe is arranged between two installation boxes, the bottom of mounting bracket is fixedly installed with mounting plate, the inside of device shell is provided with cleaning roller;Further including: ash removal mechanism, for making the cleaning roller to the dust floating material of adhering on bridge clean, ash removal mechanism is installed between two installation boxes;The dust and moss adhering on the surface of bridge are cleaned by ash removal mechanism, the problem that dust and moss shield concrete crack is solved, so that the effect of comprehensive detection and impurity cleaning is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of concrete crack detection, in particular to a concrete crack detection device based on visual analysis. BACKGROUND

[0002] Concrete crack identification is an important engineering detection work, which is related to the safety and stability of buildings. In concrete structures, cracks are a common disease phenomenon, and their causes are various, such as material shrinkage, temperature change, and load action. Therefore, accurate identification and evaluation of concrete cracks are of great significance to ensure the safety of buildings.

[0003] Concrete crack detection is one of the important projects of bridge detection. The detection equipment is usually installed on a detection vehicle, and the detection vehicle drives along the bridge deck to enable the detection equipment to detect the bridge. The existing Chinese patent literature CN116359225A discloses a concrete crack detection device and method. During detection, the camera is driven to move back and forth by a belt conveyor, which can shoot the bottom of the bridge and transmit the image to a display. The detection personnel can observe the image shot 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 there will be some moss or dust floating on the bridge, and the cracks will be covered with relatively small cracks. When the camera shoots along the bridge, the moss and dust floating will hinder the shooting of the cracks, affecting the accuracy of crack detection. SUMMARY

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

[0005] To achieve the above purpose, the present application provides the following technical scheme:

[0006] A concrete crack detection device based on visual analysis, comprising: a device housing and a mounting bracket provided on the outside of the device housing, for fixing the device housing on a suspended truss, facilitating installation, the top and bottom of the mounting bracket are fixedly installed with mounting boxes, a detection probe is arranged between the two mounting boxes for monitoring the concrete cracks of the bridge, an installation plate is fixedly installed at the bottom of the mounting bracket, a cleaning roller is arranged on the inner side of the device housing for cleaning the dust on the surface of the bridge; further comprising: a dust removal mechanism for cleaning the dust floating on the bridge by the cleaning roller, the dust removal mechanism is installed between the two mounting boxes; a slag blocking mechanism for providing dust blocking and protection for the detection probe, the slag blocking mechanism is installed on the inner side of the device housing; a slag pushing mechanism for pushing the impurities accumulated on the inner side of the device housing, the slag pushing mechanism is installed on the inner side of the device housing.

[0007] Preferably, the ash removal mechanism includes an electric lead screw disposed above the device housing. The output end of the electric lead screw is rotatably mounted between the two mounting boxes. The drive end of the electric lead screw is fixedly mounted on the top of the mounting box on the top of the device housing. A movable plate is fixedly mounted on the moving end of the electric lead screw, enabling the movable plate to move up and down reciprocally when the electric lead screw is running. A movable block is fixedly mounted on the outer side of the movable plate. A limiting rod that slides through the movable block is fixedly mounted between the two mounting boxes to guide the movement of the movable block. The detection probe is fixedly mounted on one end of the movable block, and the movable block is away from the detection probe. A detector is fixedly installed at one end of the probe. The detector is connected to the detection probe via the moving block, enabling the detection probe to move up and down along the bridge surface for comprehensive imaging of cracks and transmitting the data to the detector for detection. A rotating shaft extending into the inner side of the mounting box is fixedly installed on the inner side of the cleaning roller. A synchronous belt is rotatably installed between the rotating shaft and the output end of the electric screw, so that the cleaning roller can rotate synchronously when the electric screw is running. The rotating shaft is rotatably installed inside the housing of the device. A spiral scraper is fixedly installed on the outer side of the cleaning roller for scraping off dust and moss adhering to the bridge surface.

[0008] Preferably, the slag-blocking mechanism includes a baffle slidably mounted on the housing of the device. The baffle is located between the cleaning roller and the detection probe. A scraper is fixedly mounted on the outer side of the baffle. The baffle, together with the scraper, provides shielding for the detection probe to prevent dust from interfering with the detection probe's imaging and scrapes away residual dust and moss from the bridge surface. A plurality of vertically equidistant sliders are fixedly mounted on the side of the baffle away from the cleaning roller. A sliding cavity is provided on the outer side of the housing of the device for limiting the sliding of the sliders. A sliding rod is fixedly mounted on the inner side of the sliding cavity and slides through the sliders. A spring is provided on the outer side of the sliding rod. The elasticity of the spring allows the scraper to adhere to the surface of the bridge, facilitating the handling of uneven bridge surfaces. The spring is fixedly mounted between the slider and the inner side of the sliding cavity.

[0009] Preferably, the pushing mechanism comprises a plurality of pushing strips vertically and equidistantly arranged on the side of the baffle close to the cleaning roller, the pushing strips are in contact with the outer side of the baffle, the end of the pushing strip away from the scraping piece is fixedly installed with a positioning block, the outer side of the positioning block is fixedly installed with a sliding block two, the outer side of the device shell is provided with a sliding cavity two for limiting sliding of the sliding block two, the inner side of the sliding cavity two is fixedly installed with a sliding rod two sliding through the sliding block two, the outer side of the sliding rod two is provided with a spring two, so that when the sliding block two moves, the spring two can be used to reset the pushing strip through the elastic force of the spring two, the spring two is fixedly installed between the inner side of the sliding cavity two and the sliding block two, the end of the sliding block two away from the positioning block is fixedly installed with a resisting column, the side of the moving block close to the device shell is fixedly installed with a pressing column, so that when the moving block moves, the pressing column can push the resisting column to move, thereby realizing the alternate movement of the plurality of pushing strips.

[0010] Preferably, the device shell is fixedly installed with three equidistantly distributed supporting rods on the side away from the cleaning roller, the supporting rods are fixedly installed with a fixed plate between the supporting rods, the supporting rods penetrate through the mounting frame, the outer side of the supporting rod is provided with a spring three, and the spring three is fixedly installed between the device shell and the mounting frame, so that when the device shell is close to the bridge, the spring three can provide buffering through the elastic force of the spring three.

[0011] Preferably, the device shell is fixedly installed with a plurality of rectangular arrayed mounting seats one on the side away from the mounting frame, and the mounting box is fixedly installed with a mounting seat two on the side away from the mounting frame, the outer sides of the mounting seat one and the mounting seat two are rotatably installed with rolling balls, so as to abut against the outer side of the bridge and move.

[0012] Preferably, the device shell is fixedly installed with a discharge pipeline close to the mounting frame, and the discharge pipeline is in an inclined structure, so as to discharge the dust and moss impurities entering the device shell.

[0013] Preferably, the two mounting boxes are fixedly installed with a protective shell, the moving end of the electric screw rod is in contact with the inner side of the protective shell, and the outer side of the protective shell is provided with a sliding groove for limiting sliding of the moving plate, so as to provide dustproof blocking for the output end of the electric screw rod.

[0014] Preferably, the outer side of the rotating shaft is fixedly installed with a fan above the cleaning roller, for blowing and cleaning the residues on the cleaning roller.

[0015] Preferably, the end of the pushing strip away from the positioning block is fixedly installed with a barb, for scraping and sending hard fragments.

[0016] Compared with the prior art, the present application has the following beneficial effects:

[0017] The application can make the detection probe reciprocate up and down along the surface of the bridge, facilitate the rapid detection of the concrete cracks on the surface of the bridge, and make the cleaning roller keep self-rotation, clean the dust and moss adhered to the surface of the bridge when the mounting frame moves, solve the problem that the dust and moss shield the concrete cracks, so as to achieve the effect of comprehensive detection and impurity cleaning.

[0018] The application can block the dust cleaned by the cleaning roller by the baffle when the device shell moves, prevent the influence on the detection probe, and scrape the hard impurities, improve the processing efficiency of the dust impurities and moss, so as to improve the detection accuracy.

[0019] The application makes the moving block press the plurality of resisting columns by the pressure column once when reciprocating, makes the push bar reciprocate along the surface of the baffle and the scraper, facilitates the repeated push and pull of the dust and moss remaining on the baffle and the scraper, prevents the accumulation of the dust and moss, so as to facilitate the discharge effect. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is the overall structure schematic diagram of the application;

[0021] Figure 2 It is the structure schematic diagram of the moving plate and the detection probe in the application;

[0022] Figure 3 It is the structure schematic diagram of the fan and the mounting box in the application;

[0023] Figure 4 It is the structure schematic diagram of the moving block and the pressure column in the application;

[0024] Figure 5 It is the structure schematic diagram of the fixed plate and the discharge pipeline in the application;

[0025] Figure 6 It is Figure 2 It is the enlarged structure schematic diagram of the A area in the application;

[0026] Figure 7 It is the structure schematic diagram of the barb and the scraper in the application;

[0027] Figure 8 It is the structure schematic diagram of the push bar and the baffle in the application.

[0028] In the figure: 1, device shell; 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, limiting rod; 11, detector; 12, rotating shaft; 13, synchronous belt; 14, spiral scraping strip; 15, baffle; 16, scraping piece; 17, sliding block one; 18, sliding rod one; 19, spring one; 20, push bar; 21, positioning block; 22, sliding block two; 23, sliding rod two; 24, spring two; 25, abutting column; 26, pressing column; 27, supporting rod; 28, fixed plate; 29, spring three; 30, mounting seat one; 31, mounting seat two; 32, rolling ball; 33, material discharging pipeline; 34, protective shell; 35, fan; 36, barb. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts fall within the scope of protection of the present application.

[0030] Embodiment one: please refer to Figures 1-8 , a kind of concrete crack detection device based on visual analysis in the figure, including device shell 1 and the mounting frame 2 of setting in the outer side of device shell 1, for fixing device shell 1 on the suspended truss, facilitate installation, the top and bottom of mounting frame 2 are fixedly installed with mounting box 3, detection probe 4 is arranged between the two mounting boxes 3, for monitoring bridge concrete crack, the bottom of mounting frame 2 is fixedly installed with mounting plate 5, the inner side of device shell 1 is provided with cleaning roller 6, for the dust cleaning of bridge surface;Further include: dust removal mechanism, for making cleaning roller 6 clean the dust floating material adhered on the bridge, dust removal mechanism is installed between the two mounting boxes 3;Slag blocking mechanism, for providing dust blocking and protection for detection probe 4, slag blocking mechanism is installed in the inner side of device shell 1;Push slag mechanism, for pushing the impurities accumulated in the inner side of device shell 1, push slag mechanism is installed in the inner side of device shell 1.

[0031] The ash removing mechanism comprises a motorized lead screw 7 arranged above the device shell 1, the output end of the motorized lead screw 7 is rotatably arranged between the two mounting boxes 3, the driving end of the motorized lead screw 7 is fixedly arranged on the top of the mounting box 3 on the top of the device shell 1, the moving end of the motorized lead screw 7 is fixedly arranged with a moving plate 8, so that the moving plate 8 can move up and down reciprocatingly when the motorized lead screw 7 operates, the outer side of the moving plate 8 is fixedly arranged with a moving block 9, the two mounting boxes 3 are fixedly arranged with a limiting rod 10 slidingly penetrating the moving block 9, so as to provide guidance for the movement of the moving block 9, the detection probe 4 is fixedly arranged on one end of the moving block 9, the end of the moving block 9 away from the detection probe 4 is fixedly arranged with a detector 11, the detector 11 is connected with the detection probe 4 through the moving block 9, so that the detection probe 4 can move up and down reciprocatingly along the surface of the bridge, which is convenient for overall shooting of the cracks and transmitting data to the detector 11 for detection, the inner side of the cleaning roller 6 is fixedly arranged with a rotating shaft 12 extending to the inner side of the mounting box 3, the rotating shaft 12 and the output end of the motorized lead screw 7 are rotatably arranged with a synchronous belt 13, so that the cleaning roller 6 can synchronously rotate through the synchronous belt 13 when the motorized lead screw 7 operates, the rotating shaft 12 is rotatably arranged on the inner side of the device shell 1, the outer side of the cleaning roller 6 is fixedly arranged with a spiral scraping strip 14 for scraping the adhered dust and moss on the surface of the bridge;

[0032] When the motorized lead screw 7 operates, the moving plate 8 can move up and down reciprocatingly through the moving end of the motorized lead screw 7, the moving plate 8 drives the moving block 9 to move synchronously along the outer side of the limiting rod 10, the moving block 9 drives the detection probe 4 to move along the concrete cracks on the surface of the bridge, so that the cracks can be overall shot and the data information can be transmitted to the detector 11 for detection, the detection vehicle can drive the mounting frame 2 to move through the suspension truss, so that the device shell 1 can move along the surface of the bridge through the mounting frame 2, the rotating shaft 12 can synchronously rotate through the synchronous belt 13 of the output end of the motorized lead screw 7, so that the cleaning roller 6 can synchronously rotate through the rotating shaft 12, the cleaning roller 6 can move along with the device shell 1, the adhered dust and moss on the surface of the bridge can be scraped through the spiral scraping strip 14, so as to prevent the dust and moss from shielding the cracks, thereby achieving the effect of overall detection and impurity cleaning.

[0033] The slag blocking mechanism comprises a baffle 15 slidingly installed on the device shell 1, the baffle 15 is located between the cleaning roller 6 and the detection probe 4, the outer side of the baffle 15 is fixedly installed with a scraping piece 16, the baffle 15 cooperates with the scraping piece 16 to provide shielding for the detection probe 4, so as to prevent dust from interfering with the shooting of the detection probe 4 and scrape off the dust and moss remaining on the surface of the bridge, a plurality of sliding blocks one 17 vertically and equidistantly distributed are fixedly installed on the side of the baffle 15 away from the cleaning roller 6, a sliding cavity one is formed on the outer side of the device shell 1 and used for limiting sliding of the sliding blocks one 17, a sliding rod one 18 slidingly penetrating through the sliding blocks one 17 is fixedly installed on the inner side of the sliding cavity one, a spring one 19 is arranged on the outer side of the sliding rod one 18, the spring one 19 is elastically used to make the scraping piece 16 adhere to the surface of the bridge, so as to facilitate coping with the uneven bridge surface, and the spring one 19 is fixedly installed between the sliding blocks one 17 and the inner side of the sliding cavity one;

[0034] When the device shell 1 moves, the baffle 15 can be driven to move synchronously, so that the cleaning roller 6 can scrape off the dust and moss on the surface of the bridge and provide shielding for the scraped dust, so as to prevent the dust from affecting the detection probe 4 and ensure normal shooting of the detection probe 4, and the baffle 15 drives the scraping piece 16 to move along the surface of the bridge, so as to facilitate scraping off the remaining dust, when the scraping piece 16 contacts the uneven bridge surface, the scraping piece 16 drives the sliding blocks one 17 to move along the outer side of the sliding rod one 18 through the baffle 15, so as to compress the spring one 19, the spring one 19 is used to make the scraping piece 16 adhere to the surface of the bridge by the elastic force, so as to improve the detection accuracy.

[0035] The slag pushing mechanism comprises a plurality of push strips 20 vertically and equidistantly arranged on the side of the baffle 15 close to the cleaning roller 6, the push strips 20 contact 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 scraping piece 16, a sliding block two 22 is fixedly installed on the outer side of the positioning block 21, a sliding cavity two is formed on the outer side of the device shell 1 and used for limiting sliding of the sliding block two 22, a sliding rod two 23 slidingly penetrating through the sliding block two 22 is fixedly installed on the inner side of the sliding cavity two, a spring two 24 is arranged on the outer side of the sliding rod two 23, so that the sliding block two 22 can utilize the elastic force of the spring two 24 when moving, so as to facilitate the sliding block two 22 to drive the positioning block 21 to reset the push strip 20, the spring two 24 is fixedly installed between the inner side of the sliding cavity two and the sliding block two 22, a resisting column 25 is fixedly installed on the end of the sliding block two 22 away from the positioning block 21, a pressing column 26 is fixedly installed on the side of the moving block 9 close to the device shell 1, so that the moving block 9 can drive the resisting column 25 to move through the pressing column 26 when moving, so as to realize alternate movement of the plurality of push strips 20;

[0036] When the moving block 9 moves, the pressure column 26 and the outer side of the abutment column 25 are driven to move, the arc surface of the pressure column 26 moves along the arc surface of the abutment column 25, the abutment column 25 drives the sliding block two 22 to move along the outer side of the sliding rod two 23 and compresses the spring two 24, the sliding block two 22 drives the push bar 20 to move along the outer side of the baffle 15 and the scraping piece 16 through the positioning block 21, pushes and pulls the dust and moss accumulated on the surface of the baffle 15 and the scraping piece 16, and with the movement of the moving block 9, the alternating movement of the plurality of push bars 20 is realized, which facilitates the discharge of the dust and moss accumulated on the baffle 15 and the scraping piece 16, thereby achieving the effect of facilitating the discharge, and ensuring the continuous monitoring of the detection probe 4.

[0037] Working principle: first, the user fixes the mounting plate 5 on the truss suspended by the detection vehicle, so that the mounting frame 2 drives the device shell 1 to be close to the surface of the bridge, at this time, the user starts the electric screw rod 7, the moving end of the electric screw rod 7 drives the moving plate 8 to move up and down reciprocatingly, so that the moving plate 8 drives the moving block 9 to move synchronously along the outer side of the limiting rod 10, the moving block 9 drives the detection probe 4 to move along the concrete crack on the surface of the bridge, fully shoots the crack, and transmits the data information to the detector 11 for detection, at this time, the detection vehicle keeps driving, so that the suspended truss drives the mounting frame 2 to move, the mounting frame 2 drives the device shell 1 to move along the surface of the bridge, at the same time, the output end of the electric screw rod 7 drives the rotating shaft 12 to rotate through the synchronous belt 13, so that the rotating shaft 12 drives the spiral scraping strip 14 on the cleaning roller 6 to rotate synchronously, with the movement of the device shell 1, the dust and moss adhered to the surface of the bridge are scraped off through the spiral scraping strip 14, at the same time, the device shell 1 drives the baffle 15 to move synchronously, so that the scraping piece 16 on the baffle 15 moves along the surface of the bridge, scrapes off the residual dust and impurities, and the baffle 15 is blocked between the detection probe 4 and the cleaning roller 6, which provides protection for the detection probe 4, prevents the dust from hindering the shooting of the detection probe 4, improves the detection accuracy, and with the accumulation of dust and moss on the surface of the scraping piece 16 and the baffle 15, the moving block 9 moves, drives the pressure column 26 to move synchronously, the arc surface of the pressure column 26 moves along the arc surface of the abutment column 25, so that the pressure column 26 drives the abutment column 25 to displace, the abutment column 25 drives the sliding block two 22 to move along the outer side of the sliding rod two 23 and compresses the spring two 24, the sliding block two 22 drives the push bar 20 to move along the outer side of the baffle 15 and the scraping piece 16 through the positioning block 21, pushes and pulls the dust and moss accumulated on the surface of the baffle 15 and the scraping piece 16, and with the movement of the moving block 9, the reciprocating movement of the plurality of push bars 20 is realized, so that the dust and moss accumulated on the baffle 15 and the scraping piece 16 are discharged, which facilitates the continuous detection of the bridge by the detection probe 4, thereby achieving the effects of comprehensive detection and automatic cleaning, and improving the detection accuracy of the detection probe 4 on the concrete crack.

[0038] Embodiment two: please refer to Figure 2 ,Figure 5 And Figure 6 Further illustrated in the embodiment one, the device shell 1 is fixedly installed with three equidistantly distributed supporting rods 27 on the side far away from the cleaning roller 6, the three supporting rods 27 are fixedly installed with a fixed plate 28, the supporting rods 27 penetrate through the mounting frame 2, the outer side of the supporting rods 27 is provided with springs 29, the springs 29 are fixedly installed between the device shell 1 and the mounting frame 2, so that the device shell 1 provides buffering by the elastic force of the springs 29 when being close to the bridge, the device shell 1 is fixedly installed with a plurality of rectangular arrayed mounting seats 30 on the side far away from the mounting frame 2, the mounting box 3 is fixedly installed with mounting seats 31 on the side far away from the mounting frame 2, the outer sides of the mounting seats 30 and the mounting seats 31 are rotatably installed with rolling balls 32, which are convenient for abutting against the outer side of the bridge and moving.

[0039] In the embodiment, the device shell 1 can be in contact with the surface of the bridge through the rolling balls 32 on the mounting seats 30 and the mounting seats 31, which is convenient for the device shell 1 to move at multiple angles along the surface of the bridge, and when the device shell 1 is close to the surface of the bridge, the supporting rods 27 can move along the inner side of the mounting frame 2 by the elastic force of the springs 29, which provides buffering for the pressure between the device shell 1 and the surface of the bridge, and is convenient for moving along the uneven surface of the bridge, thereby improving the stability of the device shell 1 when moving.

[0040] Embodiment three: please refer to Figures 2-7 Further illustrated in the embodiment, the device shell 1 is fixedly installed with a discharging pipeline 33 on the side close to the mounting frame 2, the discharging pipeline 33 is in an inclined structure, which is convenient for discharging the dust and moss impurities entering the device shell 1, the two mounting boxes 3 are fixedly installed with a protective shell 34, the moving end of the electric lead screw 7 is in contact with the inner side of the protective shell 34, the outer side of the protective shell 34 is provided with a sliding groove for limiting the sliding of the moving plate 8, which provides dustproof blocking for the output end of the electric lead screw 7, the outer side of the rotating shaft 12 is fixedly installed with a fan 35 above the cleaning roller 6, which is used for blowing and cleaning the residues on the cleaning roller 6, the end of the push strip 20 far away from the positioning block 21 is fixedly installed with a barb 36, which is used for scraping and sending hard blocks.

[0041] In this embodiment: the moss and dust impurities in the device shell 1 can be discharged through the inclined discharge pipe 33, preventing the device shell 1 from accumulating a large amount of moss and dust impurities, the protective shell 34 can provide protection for the electric screw rod 7, preventing a small amount of dust from entering the outside of the electric screw rod 7 when the device shell 1 is moving, ensuring smooth movement of the moving end of the electric screw rod 7, and when the rotating shaft 12 rotates, it can drive the fan 35 to rotate synchronously, causing the airflow in the device shell 1 to flow downward, facilitating the cleaning of the dust impurities remaining on the surface of the cleaning roller 6, and when the push bar 20 moves, the barb 36 on the push bar 20 can scrape and send hard chunks on the baffle 15, and can quickly separate the accumulated dust and moss, causing the dust and moss to be discharged loosely.

[0042] It should be noted that, in this document, the terms such as first and second are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such a process, method, article or device.

[0043] Although embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A concrete crack detection device based on visual analysis, characterized by, The device shell is provided with a mounting rack outside the device shell, the top and bottom of the mounting rack are fixedly provided with mounting boxes, a detection probe is arranged between the two mounting boxes, the bottom of the mounting rack is fixedly provided with a mounting plate, and the inner side of the device shell is provided with a cleaning roller. Further comprising: The ash removal mechanism is used for cleaning the dust and floating materials adhered to the bridge, the ash removal mechanism is installed between the two mounting boxes, the ash removal mechanism comprises a motorized lead screw arranged above the device shell, the output end of the motorized lead screw is rotatably installed between the two mounting boxes, the driving end of the motorized lead screw is fixedly installed on the top of the mounting box on the top of the device shell, the moving end of the motorized lead screw is fixedly provided with a moving plate, the outer side of the moving plate is fixedly provided with a moving block, a limiting rod is fixedly installed between the two mounting boxes and slidably penetrates the moving block, one end of the detection probe is fixedly installed on the moving block, the end of the moving block away from the detection probe is fixedly provided with a detector, the detector is connected to the detection probe through the moving block, the inner side of the cleaning roller is fixedly provided with a rotating shaft extending to the inner side of the mounting box, a synchronous belt is rotatably installed between the rotating shaft and the output end of the motorized lead screw, and the rotating shaft is rotatably installed on the inner side of the device shell. The slag blocking mechanism is used for providing dust blocking and protection for the detection probe, the slag blocking mechanism is installed on the inner side of the device shell, the slag blocking mechanism comprises a baffle slidably installed on the device shell, the baffle is located between the cleaning roller and the detection probe, the outer side of the baffle is fixedly provided with a scraping piece, a plurality of sliding blocks one are fixedly installed on the side of the baffle away from the cleaning roller and vertically and equidistantly distributed, the outer side of the device shell is provided with a sliding cavity one for limiting sliding of the sliding blocks one, a sliding rod one is fixedly installed in the sliding cavity one and slidably penetrates the sliding blocks one, a spring one is arranged on the outer side of the sliding rod one and fixedly installed between the sliding blocks one and the inner side of the sliding cavity one. The slag pushing mechanism is used for pushing the impurities accumulated on the inner side of the device shell, the slag pushing mechanism is installed on the inner side of the device shell, the slag pushing mechanism comprises a plurality of pushing strips vertically and equidistantly arranged on the side of the baffle close to the cleaning roller, the pushing strips are in contact with the outer side of the baffle, the end of the pushing strip away from the scraping piece is fixedly provided with a positioning block, the outer side of the positioning block is fixedly provided with a sliding block two, the outer side of the device shell is provided with a sliding cavity two for limiting sliding of the sliding block two, a sliding rod two is fixedly installed in the sliding cavity two and slidably penetrates the sliding block two, a spring two is arranged on the outer side of the sliding rod two and fixedly installed between the inner side of the sliding cavity two and the sliding block two, the end of the sliding block two away from the positioning block is fixedly provided with a resisting column, and the side of the moving block close to the device shell is fixedly provided with a pressing column. The side of the device shell away from the cleaning roller is fixedly provided with three equidistantly distributed supporting rods, a fixed plate is fixedly installed between the three supporting rods, the supporting rods penetrate the mounting rack, a spring three is arranged on the outer side of the supporting rods and fixedly installed between the device shell and the mounting rack.

2. The visual analysis based concrete crack detection device according to claim 1, wherein: The side of the device shell away from the mounting rack is fixedly provided with a plurality of rectangular arrayed mounting seats one, the side of the mounting box away from the mounting rack is fixedly provided with a mounting seat two, and the outer sides of the mounting seat one and the mounting seat two are rotatably provided with rolling balls.

3. The visual analysis based concrete crack detection device according to claim 1, wherein: The side of the device shell close to the mounting rack is fixedly provided with a discharging pipeline, and the discharging pipeline has an inclined structure.

4. The visual analysis based concrete crack detection device according to claim 1, wherein: ​ 5. The visual analysis based concrete crack detection device according to claim 1, wherein: The protective shell is fixedly installed between the two mounting boxes, the moving end of the electric screw rod is in contact with the inner side of the protective shell, and the outer side of the protective shell is provided with a sliding groove for limiting sliding of the moving plate.

6. The visual analysis based concrete crack detection device according to claim 1, wherein: The outer side of the rotating shaft is fixedly installed with the fan above the cleaning roller.

7. The visual analysis based concrete crack detection device according to claim 1, wherein: The end of the push strip away from the positioning block is fixedly installed with an inverted hook.

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