Multi-angle crack detection device for hydraulic engineering construction

Abstract

The invention relates to a hydraulic engineering crack detection device, in particular to a hydraulic engineering construction multi-angle crack detection device which comprises a movable cart, a supporting frame, supporting legs and a support, the supporting frame, the supporting legs and the support are arranged on the movable cart, and a digital imaging crack detection instrument is fixed to the top of the supporting frame through bolts. According to the invention, the outer wall of the column body is provided with the stroke guide groove, and the stroke guide groove and the lifting mechanism are combined to drive the digital imaging camera to complete scanning coverage in the vertical direction, so that complete coverage of a detection area is ensured; the method is characterized in that when the camera runs to the top and the bottom, multi-angle shooting of the front face and the two side directions of the crack is achieved through a preset deflection mechanism, the three-dimensional morphological characteristics of the crack at different illumination angles can be captured through the design, the false positive recognition rate can be greatly reduced, and the detection accuracy is improved. High-quality data support is provided for accurate extraction of subsequent crack features, and the accuracy and reliability of hydraulic engineering crack detection are improved.

Description

TECHNICAL FIELD

[0001] The application relates to a water conservancy engineering crack detection device, in particular to a multi-angle crack detection device for water conservancy engineering construction. BACKGROUND

[0002] Water conservancy projects such as dams, embankments, channels and sluices are the core infrastructure for water resources regulation, flood control and disaster reduction, agricultural irrigation and energy supply. The structural safety of water conservancy projects is directly related to the safety of people's lives and property and the stability of the society and economy. However, water conservancy structures are exposed to complex environments such as water erosion, temperature changes, wet-dry alternation and foundation settlement for a long time, which are prone to cracks.

[0003] Cracks are a typical manifestation of water conservancy structure damage. If not discovered and treated in time, they will gradually develop into penetrating defects. On the one hand, cracks can exacerbate water seepage, leading to material degradation such as steel corrosion and concrete carbonation, weakening the structural bearing capacity. On the other hand, serious cracks may cause structural instability, such as dam leakage and embankment piping collapse. Therefore, accurate and efficient detection of cracks is a key link in the safety monitoring of water conservancy projects.

[0004] With the continuous progress of science and technology, water conservancy projects have higher requirements for the accuracy, efficiency and automation of crack detection, prompting people to develop more advanced crack detection devices. For example, by using digital modeling recognition technology, optical fiber sensor technology and intelligent robot technology, rapid, accurate and non-destructive detection of water conservancy cracks can be achieved, the changes of cracks can be monitored in real time, and the data can be transmitted to a remote monitoring center for analysis and processing, providing more powerful technical support for the safety management and maintenance of water conservancy projects.

[0005] In crack detection technology, digital modeling recognition technology is chosen because it has many unique advantages compared to optical fiber sensor technology and intelligent robot technology. Optical fiber sensor technology can monitor structural strain and temperature in real time, but it is complex to install, requires pre-buried optical fibers and has high cost. Intelligent robot technology can detect in complex areas, but it is expensive and has strict environmental requirements. Digital modeling recognition technology uses high-resolution cameras to capture images and accurately identifies cracks through image processing algorithms. It has the advantages of non-contact, high efficiency, low cost, wide application range and no damage to the structure. It can quickly obtain comprehensive crack information and can be remotely analyzed and processed. It is particularly suitable for crack detection of large and complex structures such as water conservancy projects.

[0006] Although digital imaging technology has significant advantages in crack detection of water conservancy projects, it has defects that are difficult to overcome at the principle level, and false positive identification problems are particularly prominent, which seriously affects the accuracy of the detection data. On the one hand, the presentation of crack morphology highly depends on the shooting angle. When the light is oblique and the shooting angle is inclined, the edge contrast of some fine cracks is reduced, and the outline is blurred, so that the model cannot effectively extract the features. For the area with large surface undulation, the concave-convex texture of non-crack is easily mistaken for crack morphology.

[0007] On the other hand, the interference factors in the complex environment of water conservancy projects further aggravate the risk of misidentification: the natural texture, pollution and environmental light and shadow on the surface of the concrete, which are non-crack features, have a high similarity with cracks in visual form, and the existing algorithm cannot accurately distinguish them, resulting in a large number of false positive cracks being included in the detection results. Such problems not only increase the workload of later data review, but also may mislead the judgment of crack development trend and interfere with the accuracy of structure safety evaluation. SUMMARY

[0008] The purpose of the present application is to provide a multi-angle crack detection device for water conservancy construction to solve the problems raised in the background art.

[0009] To achieve the above-mentioned purpose, the present application provides the following technical scheme: A multi-angle crack detection device for water conservancy construction, comprising a mobile cart, a support frame, a support leg and a support base provided on the mobile cart, a digital imaging crack detection instrument fixed on the top of the support frame by bolts, an adjustable inclination angle inclined base provided on the support base, a deflection support mechanism fixedly connected to the top of the inclined base, and a column provided above the deflection support mechanism, a multi-angle crack detection mechanism provided on the column; The multi-angle crack detection mechanism comprises a multi-angle shooting mechanism slidingly installed on the outer wall of the column, a lifting mechanism fixedly connected to the top of the column, and a stroke control mechanism fixedly connected to the outer wall of the column. The deflection support mechanism is used for guiding and supporting the column. The lifting mechanism is used for driving the multi-angle shooting mechanism to move up and down when in action. The stroke control mechanism is used for controlling the start and stop and lifting switching of the lifting mechanism. The digital imaging crack detection instrument and the multi-angle shooting mechanism remotely communicate data.

[0010] The multi-angle crack detection device for water conservancy construction as described above: the deflection support mechanism comprises a support base fixedly connected to the inclined base, and a rotation center groove and an arc-shaped sliding groove opened in the support base. The rotation center groove and the arc-shaped sliding groove are concentrically designed.

[0011] The water conservancy construction multi-angle crack detection device has the advantages that the multi-angle shooting mechanism comprises a stroke guide groove and a ball, the ball is installed on the stroke guide groove, and the ball is installed with a ring-shaped part.

[0012] The water conservancy construction multi-angle crack detection device has the advantages that the multi-angle shooting mechanism comprises a stroke guide groove and a ball, the ball is installed on the stroke guide groove, and the ball is installed with a ring-shaped part.

[0013] The water conservancy construction multi-angle crack detection device has the advantages that the multi-angle shooting mechanism comprises a stroke guide groove and a ball, the ball is installed on the stroke guide groove, and the ball is installed with a ring-shaped part.

[0014] The water conservancy construction multi-angle crack detection device has the advantages that the multi-angle shooting mechanism comprises a stroke guide groove and a ball, the ball is installed on the stroke guide groove, and the ball is installed with a ring-shaped part.

[0015] The water conservancy construction multi-angle crack detection device has the advantages that the multi-angle shooting mechanism comprises a stroke guide groove and a ball, the ball is installed on the stroke guide groove, and the ball is installed with a ring-shaped part.

[0016] The water conservancy construction multi-angle crack detection device has the advantages that the multi-angle shooting mechanism comprises a stroke guide groove and a ball, the ball is installed on the stroke guide groove, and the ball is installed with a ring-shaped part.

[0017] The water conservancy construction multi-angle crack detection device has the advantages that the multi-angle shooting mechanism comprises a stroke guide groove and a ball, the ball is installed on the stroke guide groove, and the ball is installed with a ring-shaped part.

[0018] Compared with the prior art, the present application has the beneficial effects that: by setting the stroke guide groove on the outer wall of the column and combining the lifting mechanism to drive the digital imaging camera to complete the scanning coverage in the vertical direction, the overall coverage of the detection area is ensured; the key is that when the camera runs to the top and bottom positions, the multi-angle shooting of the front and both sides of the crack is realized through the preset deflection mechanism, this design can capture the three-dimensional morphological characteristics of the crack under different illumination angles, which not only solves the problems of low edge contrast and fuzzy profile of fine cracks under a single perspective, but also effectively distinguishes the differences between non-crack features such as concrete surface texture, water stain traces and real cracks through cross verification of multi-directional images, finally, through fusion analysis of multi-angle images, the false positive recognition rate can be greatly reduced, high-quality data support is provided for subsequent accurate extraction of crack features, and the accuracy and reliability of crack detection of water conservancy projects are improved.

[0019] The present application also cooperates with the stroke control mechanism on the lifting mechanism, when the digital imaging camera moves to the specified position such as the top and bottom, the control switch is automatically triggered to switch the lifting mode, precise positioning and efficient shooting control are realized; at the same time, the tiltable base is equipped at the bottom of the crack detection device, which can flexibly adjust the angle and adapt to the surfaces of buildings with different slopes, thereby significantly improving the adaptability and accuracy of crack detection, effectively ensuring the reliability and comprehensiveness of the safety evaluation of water conservancy project structures. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a whole structure schematic diagram of the multi-angle crack detection device for water conservancy construction.

[0021] Figure 2 It is another angle structure schematic diagram of the whole in the multi-angle crack detection device for water conservancy construction.

[0022] Figure 3 It is a moving cart, support frame, digital imaging crack detection instrument, support leg, support and tiltable base structure schematic diagram in the multi-angle crack detection device for water conservancy construction.

[0023] Figure 4 It is a column, deflection support mechanism and multi-angle crack detection mechanism structure schematic diagram in the multi-angle crack detection device for water conservancy construction.

[0024] Figure 5 It is a deflection support mechanism, multi-angle shooting mechanism and stroke control mechanism structure schematic diagram in the multi-angle crack detection device for water conservancy construction.

[0025] Figure 6 It is a deflection support mechanism, multi-angle shooting mechanism and stroke control mechanism disassembly structure schematic diagram in the multi-angle crack detection device for water conservancy construction.

[0026] Figure 7 It is a multi-angle shooting mechanism and stroke control mechanism structure diagram in the water conservancy construction multi-angle crack detection device.

[0027] Figure 8 It is a multi-angle shooting mechanism and stroke control mechanism disassembly structure diagram in the water conservancy construction multi-angle crack detection device.

[0028] Figure 9 It is a column and stroke control mechanism structure diagram in the water conservancy construction multi-angle crack detection device.

[0029] Figure 10 It is a lifting mechanism, ring-shaped frame, extension plate and top plate structure diagram in the water conservancy construction multi-angle crack detection device.

[0030] Figure 11 It is a lifting mechanism structure diagram in the water conservancy construction multi-angle crack detection device.

[0031] In the figure: 1, mobile cart; 2, support frame; 3, digital imaging crack detection instrument; 4, support leg; 5, support; 6, inclined base; 7, support base; 8, rotation center groove; 9, arc-shaped sliding groove; 10, column; 11, limit column; 12, stroke guide groove; 13, ring-shaped part; 14, ball; 15, top plate; 16, extension plate; 17, multi-stage telescopic cylinder; 18, digital imaging camera; 19, first start-stop controller; 20, second start-stop controller; 21, first switching controller; 22, second switching controller; 23, connecting disc; 24, lifting seat; 25, lifting platform; 26, drive motor; 27, rotating connection ring. DETAILED DESCRIPTION

[0032] 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, not all.

[0033] Please refer to Figures 1-6 As an embodiment of the present application, the water conservancy construction multi-angle crack detection device comprises a mobile cart 1 and a support frame 2, a support leg 4 and a support 5 arranged on the mobile cart 1, a digital imaging crack detection instrument 3 is fixed on the top of the support frame 2 through bolts, an inclined base 6 with adjustable inclination angle is arranged on the support 5, a deflection support mechanism is fixedly connected to the top of the inclined base 6, and a column 10 is arranged above the deflection support mechanism, a multi-angle crack detection mechanism is arranged on the column 10. The multi-angle crack detection mechanism comprises a multi-angle shooting mechanism slidingly installed on the outer wall of the column 10, a lifting mechanism fixedly connected to the top of the column 10, and a stroke control mechanism fixedly connected to the outer wall of the column 10.

[0034] In this embodiment, the device is arranged on the mobile trolley 1, which facilitates the overall movement. The supporting legs 4 facilitate the locking and supporting of the whole after moving to the designated position. The inclined base 6 can flexibly adjust the angle to adapt to the surfaces of buildings with different slopes, thereby significantly improving the adaptability and accuracy of crack detection and effectively guaranteeing the reliability and comprehensiveness of the safety evaluation of water conservancy engineering structures. During detection, the multi-angle shooting mechanism is driven by the lifting mechanism to move along the preset track. When the multi-angle shooting mechanism moves to the top and bottom positions, the stroke control mechanism controls the lifting mechanism to switch the lifting mode. In this process, the multi-angle shooting mechanism is deflected, and the preset deflection mechanism realizes multi-angle shooting of the front and both sides of the crack. This design can capture the three-dimensional morphological characteristics of the crack under different illumination angles, solve the problem of low edge contrast and blurred profile of fine cracks under a single view, effectively distinguish the differences between non-crack features such as concrete surface texture and water stain marks and real cracks, and finally, through the fusion analysis of multi-angle images, the false positive recognition rate can be greatly reduced to provide high-quality data support for the accurate extraction of crack features and improve the accuracy and reliability of water conservancy engineering crack detection.

[0035] As a further scheme of the present application, the deflection support mechanism comprises a support base 7 fixedly connected to the inclined base 6 and a rotation center groove 8 and an arc-shaped sliding groove 9 formed in the support base 7. The rotation center groove 8 and the arc-shaped sliding groove 9 are concentrically designed.

[0036] In this embodiment, the support base 7 is fixed to the support base 7 by bolts. The rotation center groove 8 and the arc-shaped sliding groove 9 are concentrically designed.

[0037] As a further scheme of the present application, the multi-angle shooting mechanism comprises a stroke guide groove 12 formed in the outer wall of the column 10 and a ball 14 slidingly installed in the stroke guide groove 12. The ball 14 is provided with a ring-shaped part 13. The ring-shaped part 13 is slidingly installed on the outer wall of the column 10 through the ball 14.

[0038] In this embodiment, the stroke guide groove 12 is tangent to the outer wall of the column 10, the stroke guide groove 12 is designed in three sections, there are two corners in the stroke guide groove 12, the ball 14 slides on the stroke guide groove 12, and the annular part 13 drives the ball 14 to move synchronously when sliding on the stroke guide groove 12, and the ball 14 drives the annular part 13 to deflect whenever the ball 14 moves to the corner of the stroke guide groove 12.

[0039] As a further scheme of the application, the multi-angle shooting mechanism further comprises an extension plate 16 fixedly installed on one side of the annular part 13 and a multi-stage telescopic cylinder 17 rotatably installed at the bottom of the extension plate 16, and the bottom of the column 10 is fixedly installed with a limiting column 11.

[0040] In this embodiment, the extension plate 16 is fixed on one side of the annular part 13, the multi-stage telescopic cylinder 17 is rotatably connected with the extension plate 16, the multi-stage telescopic cylinder 17 can be telescoped for a long distance and can be telescoped in length following the up-down movement of the extension plate 16, and the limiting column 11 is arranged directly below the column 10.

[0041] As a further scheme of the application, the bottom end of the multi-stage telescopic cylinder 17 is rotatably installed on the rotation center groove 8 of the support base plate 7, and the limiting column 11 is slidably installed in the arc-shaped sliding groove 9.

[0042] In this embodiment, the multi-stage telescopic cylinder 17 is rotatably installed on the rotation center groove 8, and the limiting column 11 slides on the arc-shaped sliding groove 9, which can provide a guiding function for the movement of the column 10, when the annular part 13 deflects, the extension plate 16 will be rotated around the rotation center groove 8 due to the limitation of the extension plate 16, at this time, the column 10 will slide and deflect towards the arc-shaped sliding groove 9, and at the same time, the column 10 will also rotate around the rotation center groove 8 as the center axis, which can make the multi-angle shooting mechanism always detect the direction of the crack after the angle deflection.

[0043] As a further scheme of the application, the top of the extension plate 16 is provided with a digital imaging camera 18, and the digital imaging camera 18 is in remote data communication with the digital imaging crack detection instrument 3.

[0044] In this embodiment, the digital imaging camera 18 performs molding detection on the crack and remotely transmits the obtained data to the digital imaging crack detection instrument 3 for data statistical analysis.

[0045] As a further further scheme of the present application, the lifting mechanism comprises a connecting disc 23 fixedly installed on the top of the column 10 and a lifting seat 24 fixedly installed on one end of the connecting disc 23, the lifting seat 24 is slidably installed with a lifting platform 25 and a driving motor 26 arranged at the bottom of the lifting seat 24 for driving the lifting platform 25 to perform lifting movement.

[0046] In this embodiment, the lifting seat 24 is fixed on one side of the column 10 through the connecting disc 23, the lifting seat 24 can always follow the column 10 to move, and the driving motor 26 at the bottom drives the lifting platform 25 to perform lifting movement.

[0047] As a further further scheme of the present application, the lifting mechanism further comprises a rotating connecting ring 27 fixedly installed on one side of the lifting platform 25, the rotating connecting ring 27 is rotatably connected with the annular member 13, and the upper and lower ends of the annular member 13 are fixedly installed with the top plates 15.

[0048] In this embodiment, the rotating connecting ring 27 fixed on one side of the lifting platform 25 is sleeved on the periphery of the annular member 13 and rotatably connected with the annular member 13.

[0049] As a further further scheme of the present application, the stroke control mechanism comprises a first start-stop controller 19, a second start-stop controller 20, a first switch controller 21 and a second switch controller 22 fixedly installed on the outer wall of the column 10, the first start-stop controller 19 communicates with the second start-stop controller 20 to control the start-stop of the lifting mechanism, the first switch controller 21 communicates to control the lifting mechanism to switch to downward movement, the second switch controller 22 communicates to control the lifting mechanism to switch to upward movement, and the top plates 15 arranged at the upper and lower ends of the annular member 13 are matched with the first start-stop controller 19, the second start-stop controller 20, the first switch controller 21 and the second switch controller 22.

[0050] In this embodiment, the top plates 15 arranged at the upper and lower ends of the annular member 13 are matched with the first start-stop controller 19, the second start-stop controller 20, the first switch controller 21 and the second switch controller 22.

[0051] Please refer to Figure 5 , Figure 6 and Figure 7In the initial stage, when the ring 13 first slides to the top position, it will immediately pass the first corner point of the stroke guide groove 12, and the ring 13 will be deflected for the first time. At this time, the top plate 15 will trigger the first switching controller 21, which remotely communicates to control the lifting mechanism to switch to downward movement. Then the ring 13 will pass the second corner point of the stroke guide groove 12, and the ring 13 will be deflected for the second time. At this time, the top plate 15 will trigger the second switching controller 22, which remotely communicates to control the lifting mechanism to switch to upward movement. Then the ring 13 moves upward, so that the top plate 15 is in contact with the second start-stop controller 20. At this time, the second start-stop controller 20 will remotely communicate to control the lifting mechanism to be closed. The control logic of the first start-stop controller 19 and the second start-stop controller 20 is the same.

[0052] The above examples are exemplary rather than limiting, and the technical solutions of the present application can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application.

Claims

1. A multi-angle crack detection device for water conservancy project construction, comprising a mobile cart (1) and a support frame (2), support legs (4) and a support (5) provided on the mobile cart (1), wherein a digital imaging crack detection instrument (3) is fixed to the top of the support frame (2) by bolts, and an inclined base (6) with an adjustable inclination angle is provided on the support (5), characterized in that: A deflection support mechanism and a column (10) arranged above the deflection support mechanism are fixedly connected to the top of the tilted base (6), and a multi-angle crack detection mechanism is provided on the column (10); The multi-angle crack detection mechanism includes a multi-angle shooting mechanism slidably mounted on the outer wall of the column (10), a lifting mechanism fixedly connected to the top of the column (10), and a stroke control mechanism fixedly connected to the outer wall of the column (10). The deflection support mechanism is used to guide and support the column (10). When the lifting mechanism is in operation, it is used to drive the multi-angle shooting mechanism to perform lifting and lowering movements. The stroke control mechanism is used to control the start and stop and lifting and lowering switching of the lifting mechanism. The digital imaging crack detection instrument (3) remotely communicates data with the multi-angle shooting mechanism.

2. A multi-angle crack detection device for water conservancy project construction according to claim 1, characterized in that: The deflection support mechanism comprises a support chassis (7) fixedly connected to the tilting base (6), and a rotation center groove (8) and an arc-shaped sliding groove (9) provided on the support chassis (7), wherein the rotation center groove (8) and the arc-shaped sliding groove (9) are designed to be concentric.

3. A multi-angle crack detection device for water conservancy project construction according to claim 2, characterized in that: The multi-angle shooting mechanism comprises a travel guide groove (12) provided on the outer wall of the column (10) and a ball (14) slidably mounted on the travel guide groove (12); an annular member (13) is mounted on the ball (14); and the annular member (13) is slidably mounted on the outer wall of the column (10) via the ball (14).

4. A multi-angle crack detection device for water conservancy project construction according to claim 3, characterized in that: The multi-angle shooting mechanism further comprises an extension plate (16) fixedly mounted on one side of the annular member (13) and a multi-stage telescopic cylinder (17) rotatably mounted on the bottom of the extension plate (16), and a limiting column (11) is fixedly mounted on the bottom of the column (10).

5. A multi-angle crack detection device for water conservancy project construction according to claim 4, characterized in that: The bottom end of the multi-stage telescopic cylinder (17) is rotatably mounted on the rotating center groove (8) on the supporting chassis (7), and the limiting column (11) is slidably mounted inside the arc-shaped sliding groove (9).

6. A multi-angle crack detection device for water conservancy project construction according to claim 5, characterized in that: A digital imaging camera (18) is provided on the top of the extension plate (16), and the digital imaging camera (18) is in remote data communication with the digital imaging crack detection instrument (3).

7. A multi-angle crack detection device for water conservancy project construction according to claim 6, characterized in that: The lifting mechanism comprises a connecting plate (23) fixedly mounted on the top of the column (10) and a lifting seat (24) fixedly mounted on one end of the connecting plate (23); a lifting platform (25) is slidably mounted on the lifting seat (24) and a driving motor (26) is arranged at the bottom of the lifting seat (24) for driving the lifting platform (25) to perform lifting motion.

8. The multi-angle crack detection device for water conservancy project construction according to claim 7, characterized in that: The lifting mechanism further includes a rotating connecting ring (27) fixedly mounted on one side of the lifting platform (25), the rotating connecting ring (27) and the annular member (13) are rotatably connected, and the upper and lower ends of the annular member (13) are fixedly mounted with a top plate (15).

9. The multi-angle crack detection device for water conservancy project construction according to claim 8, characterized in that: The stroke control mechanism includes a first stop-start controller (19), a second stop-start controller (20), a first switching controller (21) and a second switching controller (22) fixedly mounted on the outer wall of the column (10), wherein the first stop-start controller (19) communicates with the second stop-start controller (20) to control the start and stop of the lifting mechanism, the first switching controller (21) communicates to control the lifting mechanism to switch to a descending motion, and the second switching controller (22) communicates to control the lifting mechanism to switch to an ascending motion, and the top plates (15) arranged at the upper and lower ends of the annular member (13) cooperate with the first stop-start controller (19), the second stop-start controller (20), the first switching controller (21) and the second switching controller (22).

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