Machine vision apparent crack manufacturing and control device

Abstract

The utility model discloses a machine vision crack manufacturing and controlling device, which comprises a molding mechanism, a control mechanism and a control mechanism, wherein the molding mechanism comprises a molding embedding plate and a molding container; the transverse rod adjusting mechanism is assembled with the molding embedding plate through an assembling plate, the assembling plate is connected with an adjusting sliding block, and the transverse rod adjusting mechanism is spliced with a supporting base through an adapter substitute; the transverse rod adjusting mechanism is transversely assembled on the supporting base, and the supporting base is vertically placed on a plane. The device can realize manufacturing and splicing of cracks, meanwhile, the width and angle of the cracks can be freely adjusted, and the efficiency and quality of image data acquisition can be improved by matching with a machine vision image acquisition system.

Description

Technical Field

[0001] The utility model belongs to the field of civil engineering technology and relates to a machine vision crack manufacturing and control device. Background Art

[0002] With the continuous increase in the number and mileage of existing highway bridges and tunnels in operation, the pressure on their maintenance is increasing dramatically year by year. Traditional manual inspections for defects are inefficient and inaccurate, and are no longer able to meet future maintenance needs. Therefore, given the industry's urgent need for rapid and intelligent detection technologies, the challenge of rapidly detecting and diagnosing highway defects needs to be addressed.

[0003] Machine vision-based intelligent crack detection technology has emerged. Its purpose is to replace the human eye in identifying apparent defects by using machines. This involves recording defect information with cameras and extracting the results using artificial intelligence algorithms. Machine vision crack recognition technology based on deep learning algorithms has been widely used in bridge and tunnel inspections. However, deep learning-based recognition technology requires the support of large datasets of accurately labeled crack images to improve the accuracy of crack width identification.

[0004] Existing methods for constructing crack width datasets primarily involve capturing crack images on-site or creating cracks using indoor test devices. The former is costly and inefficient. The latter, a commonly used method, is primarily divided into mechanical and non-mechanical methods, but suffers from complex sample preparation processes, difficulty simulating real cracks, and difficulty controlling crack width. Therefore, a machine vision-based apparent crack creation and control device is urgently needed to efficiently construct crack datasets and improve the accuracy of crack width identification using deep learning algorithms. Utility Model Content

[0005] In order to solve the problems existing in the prior art, the utility model provides a machine vision apparent crack creation and control device, comprising:

[0006] The molding mechanism comprises a molding insert plate and a molding container.

[0007] A crossbar adjustment mechanism is assembled with the mold embedding plate using an assembly plate, the assembly plate is connected to the adjustment slider, and the crossbar adjustment mechanism is spliced ​​with the support base using a conversion joint.

[0008] The support base is provided with a crossbar adjustment mechanism which is laterally mounted on the support base, and the support base is vertically placed on a plane.

[0009] According to some embodiments of the present invention, the adjustment slider is provided with a coarse adjustment knob and a fine adjustment knob.

[0010] According to some embodiments of the present invention, the crossbar adjustment mechanism is provided with a crossbar with grooves on three sides, and the adjustment slider slides unobstructed inside the crossbar.

[0011] According to some embodiments of the present invention, a row of coarse teeth and a row of fine teeth are provided inside the unslotted portion of the crossbar along the longitudinal direction; the coarse teeth match the coarse adjustment knob, and the fine teeth match the fine adjustment knob.

[0012] According to some embodiments of the present invention, the conversion joint and the cross bar are connected by a rotating shaft, and the cross bar rotates 360° around the center of the rotating shaft.

[0013] According to some embodiments of the present invention, the support base is provided with a slot, and the conversion joint is inserted into the slot, driving the crossbar adjustment mechanism to slide up and down and / or hover.

[0014] According to some embodiments of the present invention, the molded insert plate is provided with evenly distributed through holes and insert plate columns.

[0015] According to some embodiments of the present invention, a lap strip is provided at half the height of one horizontal baffle and two vertical baffles inside the molding container, and the molding embedded plate is always located at 1 / 2 of the center of the template.

[0016] According to some embodiments of the present invention, a certain space is reserved between the side of the molded embedded plate that does not overlap the overlapping strip and the transverse baffle, and the transverse baffle is kept as a smooth plane.

[0017] According to some embodiments of the present invention, through holes are provided on both sides of the transverse baffle in the molding container, and external threads are provided at both ends of the transverse assembly screw, which is assembled with nuts.

[0018] A machine vision apparent crack creation and control device according to an embodiment of the present invention has at least the following beneficial effects:

[0019] (1) The present invention is based on the idea of ​​splitting the crack into two parts, and the crack is divided into upper and lower parts. The upper and lower crack templates are cast respectively through the molding container. Then, according to the idea of ​​combining the two into one, the upper and lower crack templates are connected to the crossbar mechanism by relying on the molding embedded plate embedded when casting the template. Then, the upper and lower crack templates are spliced ​​by adjusting the slider, which effectively solves the problem of crack manufacturing.

[0020] (2) The utility model can control the distance between the upper and lower crack templates by adjusting the sliding of the slider through the coarse adjustment and fine adjustment knobs, thus solving the problem of adjusting the crack width.

[0021] (3) The utility model solves the problem of crack angle adjustment by rotating the cross bar around the center of the conversion joint shaft so that the crack formed by the splicing can rotate in a plane.

[0022] (4) The utility model can also realize the overall upward and downward movement of the crack template plane to meet the needs of different machine vision image acquisition systems. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the molding mechanism of an embodiment of the present utility model;

[0024] Figure 2 This is a schematic diagram of the crossbar adjustment mechanism of an embodiment of the present utility model;

[0025] Figure 3 This is a schematic diagram of the support base composition of an embodiment of the utility model;

[0026] Figure 4 This is a detailed diagram of the connection between the assembly plate and the adjustment slider in an embodiment of the utility model;

[0027] Figure 5 It is an overall assembly schematic diagram of an embodiment of the present utility model. DETAILED DESCRIPTION

[0028] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0029] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0030] like Figure 1 The figure shows a molding mechanism 1 according to an embodiment of the present invention, which comprises a molding insert plate 4 and a molding container 5 .

[0031] The molded embedded plate 4 is provided with embedded plate columns 6 and through holes 7;

[0032] The molding container 5 is assembled by a transverse baffle 8, a vertical baffle 9, a bottom plate 10, a nut 11, a vertical assembly screw 12, and a transverse assembly screw 13, and a lap strip 14 is provided on the inner side of the molding container 5.

[0033] like Figure 2The crossbar adjustment mechanism 2 of an embodiment of the present invention is shown, which includes a crossbar 15, an adjustment slider 16, an assembly plate 17, a conversion joint 18, a slot 19, coarse teeth 20, fine teeth 21, a coarse adjustment knob 22, a fine adjustment knob 23, a ball joint 24, and an assembly through hole 25.

[0034] The assembly plate 17 is provided with an assembly through hole 25 for connecting the mold embedding plate 4, and is connected to the adjustment slider 16 through a ball joint 24; the adjustment slider 16 is embedded in the cross bar 15, and can be moved in the cross bar 15 through the provided coarse adjustment knob 22 and fine adjustment knob 23; the inner surface of the cross bar 15 is provided with coarse teeth 20 and fine teeth 21, which are matched with the coarse adjustment knob 22 and the fine adjustment knob 23 to control the adjustment slider 16 to move in large and small amplitudes respectively, and a conversion joint 18 is provided to connect the support base 3.

[0035] In addition, the cross bar 15 is connected to the conversion joint 18 via a rotating shaft, so that the cross bar 15 can rotate 360 ​​degrees around the center of the rotating shaft.

[0036] like Figure 3 The support base 3 of the present invention is shown, comprising a support column 26, a spring retaining slot 27, and an anti-tilt base 28. The support column 26 is welded to the anti-tilt base 28 and is provided with a spring retaining slot 27 for connecting to the adapter 18, ensuring that the adapter 18 can slide up and down freely and hover at any position.

[0037] The mold insert plate 4 in the mold mechanism 1 is installed on the assembly plate 17 of the crossbar adjustment mechanism 2 through the insert plate column 6 and the nut 11. The crossbar adjustment mechanism 2 is connected to the support base 3 through the conversion joint 18 embedded in the spring groove 27.

[0038] like Figure 4 The figure shows a detailed connection diagram of the assembly plate and the adjustment slider of the embodiment of the present utility model. The assembly plate 17 is connected to the adjustment slider 16 through a ball joint 24. The assembly plate 17 can be adjusted in plane angle around the ball joint 24.

[0039] like Figure 5 The figure shows the overall assembly diagram of the device according to an embodiment of the present invention, comprising a molding mechanism 1, a crossbar adjustment mechanism 2, and a support base 3. After molding is complete, the mold plate and mold insert 4 are cast as one piece. The mold insert 4 is connected to the crossbar adjustment mechanism 2 via the insert column 6 and the assembly through-hole 25. The crossbar adjustment mechanism 2 is connected to the support base 3 via the adapter 18 and the spring retaining slot 27.

[0040] Preferably, internal threads are provided on the four sides of the bottom plate 10 in the molding container 5, and external threads are provided at both ends of the vertical assembly screw 12 for assembly with the nut 11, so as to achieve a tight connection between the horizontal baffle 8, the vertical baffle 9 and the bottom plate 10, and prevent the slurry from overflowing from the bottom during molding.

[0041] Preferably, through holes are provided on both sides of the transverse baffle 8 in the molding container 5, and external threads are provided at both ends of the transverse assembly screw 13 for assembly with the nut 11, so as to achieve tight connection between the transverse baffle 8 and the vertical baffle 9, and prevent the slurry from overflowing from the side during molding.

[0042] Preferably, a lap strip 14 is provided at half the height of a horizontal baffle 8 and two vertical baffles 9 on the inner side of the molding container 5, for overlapping the molding embedded plate 4 to ensure that the molding embedded plate 4 is always at the center 1 / 2 of the template during the molding process from pouring to molding.

[0043] In addition, the remaining transverse baffle 8 maintains a smooth inner surface (without the overlap strip 14), which is used to stick the crack-shaped bottom membrane to ensure that the cast template maintains the crack edge shape.

[0044] Preferably, a certain space is reserved between the side of the molded embedded plate 4 that does not overlap the overlapping strip 14 and the transverse baffle 8 for pasting the crack-shaped base membrane.

[0045] Preferably, the mold embedded plate 4 is provided with evenly distributed through holes 7, which increases the contact area of ​​the slurry on the upper and lower sides of the mold embedded plate 4, which is conducive to the upper and lower layers of slurry being tightly connected with the mold embedded plate 4 panel after solidification to form a whole.

[0046] Preferably, the molded embedded plate 4 is provided with an embedded plate column 6, the lower part of the embedded plate column 6 is welded to the molded embedded plate 4 panel and the upper end of the embedded plate column 6 is provided with a thread for assembly with the nut 11 and the assembly through hole 25 to connect the cross bar adjustment mechanism 2.

[0047] Preferably, slots 19 are provided on three sides of the cross bar 15 to ensure that the adjustment slider 16 can slide unobstructed inside the cross bar 15 .

[0048] Preferably, a row of coarse teeth 20 and a row of fine teeth 21 are provided along the longitudinal direction inside the unslotted portion of the crossbar 15 for matching the coarse adjustment knob 22 and the fine adjustment knob 23 .

[0049] Preferably, the adjusting slider 16 is provided with a coarse adjustment knob 22 and a fine adjustment knob 23 for controlling the adjusting slider 16 to move in large and small amplitudes, respectively.

[0050] Preferably, the assembly plate 17 is provided with an assembly through hole 25 for assembling the molded insert plate 4 .

[0051] Preferably, the ball joint 24 only allows the assembly plate 17 to rotate within a plane to ensure that the cracks are spliced ​​in the same plane.

[0052] Preferably, the conversion joint 18 is connected to the cross bar 15 by a rotating shaft, which enables the cross bar 15 to rotate 360 ​​degrees around the center of the rotating shaft, and the conversion joint 18 is connected to the support column 26 by a slot-type connection based on the spring slot 27 provided.

[0053] In a specific embodiment, the cracks are created and controlled using the machine vision apparent crack creation and control device, which specifically includes the following steps:

[0054] (1) Molding

[0055] Based on the idea of ​​dividing the crack into two, the crack is split into upper and lower edges, and the upper and lower crack templates are cast twice through the molding container.

[0056] During molding, first connect the horizontal baffle 8 and the vertical baffle 9 with nuts 11 and horizontal assembly screws 13 to form a baffle around the container, with one side of the lap strip 14 facing inward; then use nuts 11 and vertical assembly screws 12 to fix it to the bottom plate 10, thereby forming the molded container 5 as a whole.

[0057] When casting the formwork, first adhere the crack-shaped base film to the inside of the smooth transverse baffle 8 (without the overlap strips 14), then pour the slurry to half the height of the molding container 5. Next, place the molding insert 4 horizontally at half the height of the molding container 5 using the overlap strips 14. Pour the remaining slurry until the molding container 5 is filled, and vibrate to ensure good contact between the upper and lower layers of concrete.

[0058] In particular, the through holes 7 increase the contact area of ​​the slurry on the upper and lower sides of the mold embedding plate 4, which is conducive to the upper and lower layers of slurry being tightly connected with the mold embedding plate 4 panel after solidification to form a whole.

[0059] (2) Demolding

[0060] After the slurry is completely solidified, the crack template and the mold embedding plate 4 are integrated.

[0061] At this time, the horizontal baffle 8, the vertical baffle 9, the bottom plate 10, the nut 11, the vertical assembly screw 12, and the horizontal assembly screw 13 are removed to obtain the upper and lower crack templates respectively.

[0062] (3) Template installation

[0063] The upper and lower crack templates are assembled in sequence through the embedded plate columns 6 on the mold embedded plate 4 and the assembly through holes 25, so that the mold embedded plate 4 is connected to the crossbar adjustment mechanism 2.

[0064] (4) Crack creation and control

[0065] Adjust the ball joint 24 to ensure that the cracks of the two templates are in relative positions. After determining the required crack width, first use the coarse adjustment knob 22 to control the adjustment slider 16 to move significantly, so that the upper and lower crack templates move toward each other to form cracks.

[0066] When the distance between the upper and lower crack templates is close to the required crack width, the fine adjustment knob 23 is used to control the adjustment slider 16 for fine adjustment. During the adjustment process, the crack width is continuously observed with a crack width meter until the crack width reaches the requirement.

[0067] In addition, once the required crack angle is determined, the crack angle can be changed by rotating the cross bar 15 around the center of the rotation axis.

[0068] (5) Obtain machine vision crack images

[0069] After setting up the machine vision image acquisition system, adjust the height of the crossbar adjustment mechanism 2 through the conversion joint 18 so that the crack is in the middle of the picture, and then start image data acquisition. A single set of crack templates can generate a large amount of image data with different crack widths and different crack angles.

[0070] In summary, the machine vision apparent crack manufacturing and control device can realize the manufacturing and splicing of cracks, and can freely adjust the crack width and angle. When combined with a machine vision image acquisition system, it can improve the efficiency and quality of image data acquisition.

[0071] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A machine vision apparent crack manufacturing and control device, characterized in that: include: A molding mechanism comprising a molding insert plate and a molding container; A crossbar adjustment mechanism, wherein the crossbar adjustment mechanism is assembled with the mold insert plate using an assembly plate, the assembly plate is connected to the adjustment slider, and the crossbar adjustment mechanism is spliced ​​with the support base using a conversion joint; The support base is provided with a crossbar adjustment mechanism which is laterally mounted on the support base, and the support base is vertically placed on a plane.

2. A machine vision apparent crack creation and control device according to claim 1, characterized in that: The adjusting slider is provided with a coarse adjustment knob and a fine adjustment knob.

3. A machine vision apparent crack creation and control device according to claim 2, characterized in that: The crossbar adjustment mechanism is provided with a crossbar with grooves on three sides, and the adjustment slider slides unobstructed inside the crossbar.

4. A machine vision apparent crack creation and control device according to claim 3, characterized in that: Inside the ungrooved portion of the crossbar, a row of coarse teeth and a row of fine teeth are provided along the longitudinal direction; The coarse teeth match the coarse adjustment knob, and the fine teeth match the fine adjustment knob.

5. The machine vision apparent crack creation and control device according to claim 1, characterized in that: The conversion joint is connected to the crossbar by a rotating shaft, and the crossbar rotates 360 degrees around the center of the rotating shaft.

6. The machine vision apparent crack creation and control device according to claim 5, characterized in that: The support base is provided with a card slot, and the conversion joint is inserted into the card slot to drive the crossbar adjustment mechanism to slide up and down and / or hover.

7. The machine vision apparent crack creation and control device according to claim 1, characterized in that: The molded embedded plate is provided with evenly distributed through holes and embedded plate columns.

8. The machine vision apparent crack creation and control device according to claim 1, characterized in that: A lap strip is provided at half the height of one horizontal baffle and two vertical baffles on the inner side of the molding container, and the molding embedded plate is always located at 1 / 2 of the center of the template.

9. The machine vision apparent crack creation and control device according to claim 8, characterized in that: A certain space is reserved between the side of the molded embedded plate that does not overlap the overlapping strip and the transverse baffle, and the transverse baffle is kept as a smooth plane.

10. The machine vision apparent crack creation and control device according to claim 9, characterized in that: Through holes are provided on both sides of the transverse baffle in the molding container, and external threads are provided at both ends of the transverse assembly screw rod, which is assembled with nuts.

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