Defect detection device based on machine vision

Abstract

The utility model discloses a defect detection device based on machine vision, which relates to the technical field of pipeline detection, and comprises a bottom plate, driving wheels are mounted on the periphery of the outer wall of the bottom of the bottom plate, the driving wheels are universal wheels, a driving part is mounted on the outer wall of the bottom of the bottom plate, the driving part is connected with the driving wheels through wires, and the driving wheels are connected with the bottom of the bottom plate. A supporting block is welded to one end of the outer wall of the top of the bottom plate, and a control assembly is rotationally mounted at the top of the supporting block. According to the pipeline damage detection device, the light range finder emits light and moves along with the device, when the pipeline is damaged, the length of the light corresponding to the position is different from other lengths, at the moment, the prompting lamp corresponding to the light range finder flickers to give out a prompt to remind detection personnel that the position is damaged or has defects, and compared with naked-eye observation of the detection personnel, the detection efficiency is greatly improved. Light detection can detect tiny defects of the pipeline, so that the pipeline is maintained in time, the defect part can be accurately positioned, and detection omission is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline detection, in particular to a defect detection device based on machine vision. Background Art

[0002] Pipeline engineering is a widely used construction technology and occupies an important position in construction projects. There are many types of pipelines, mainly used to transport gas and fluid media. For some pipelines buried underground, they are covered by soil and are less affected by the external environment. However, some pipelines that are exposed to the outside for a long time are more prone to damage due to environmental influences such as wind, sun, rain, etc. Therefore, it is necessary to frequently detect defects in these pipelines and maintain them.

[0003] The traditional pipeline defect detection method is mainly through manual inspection, that is, manual inspection along the extension direction of the pipeline to detect whether the outer wall of the pipeline is damaged or has other defects. However, this detection method has high work intensity and serious damage to human vision. In addition, manual observation can only detect more obvious cracks or defective parts. The detection of small cracks or defects is not accurate enough, and the manual inspection efficiency is low, which is easy to miss. Therefore, a defect detection device based on machine vision is proposed to detect the pipeline through light to solve the above problems. Utility Model Content

[0004] The purpose of this application is to provide a defect detection device based on machine vision to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solutions: a defect detection device based on machine vision, comprising a base plate, wherein driving wheels are installed around the outer wall of the bottom of the base plate, and the driving wheels are universal wheels. A driving component is installed on the outer wall of the bottom of the base plate, and the driving component is connected to the driving wheel through a wire. A support block is welded at one end of the outer wall of the top of the base plate, and a control component is rotatably installed on the top of the support block, and the control component is connected to a detection component, and the detection component comprises an upper detection ring and a lower detection ring, and the upper detection ring and the lower detection ring are both semicircular, and the upper detection ring and the lower detection ring have the same size, and the upper detection ring and the lower detection ring are both provided with equidistantly distributed light rangefinders, and the outer walls of the upper detection ring and the lower detection ring are both installed with equidistantly distributed warning lights, and the number of the warning lights is the same as the number of light rangefinders, the diameter of the circle formed by the upper detection ring and the lower detection ring is larger than the diameter of the pipeline, and there is a certain distance between the inner walls of the upper detection ring and the lower detection ring and the pipeline.

[0006] Preferably, the optical rangefinder is installed with a PLC controller via a wire, and the PLC controller is connected to a warning light via a wire.

[0007] Preferably, a connecting block is welded on the bottom outer wall of the upper detection ring, a connecting groove is provided on the top outer wall of the lower detection ring, the connecting groove is adapted to the connecting block, fixing pins passing through the connecting grooves are inserted at both ends of the lower detection ring, and the connecting block is provided with a socket adapted to the fixing pins.

[0008] Preferably, the control component includes a control groove on which the top of the support block is rotatably mounted, a control frame is slidably mounted on the inner wall of the control groove, the control frame is an "L"-shaped structure, a threaded rod is rotatably mounted on the top of the upper detection ring, a threaded hole matching the threaded rod is provided on the outer wall of the bottom of the control frame, a piston is provided at the bottom of the control frame, and the piston is matched with the control groove.

[0009] Preferably, a rotating shaft is welded to the outer wall of the bottom of the control groove, and the rotating shaft is rotatably connected to the top of the support block. A driving groove is opened inside the support block, and a servo motor is installed inside the driving groove. The output shaft of the servo motor is connected to the rotating shaft.

[0010] Preferably, an inflation pipe and an exhaust pipe leading into the interior of the control groove are provided at the bottom of the outer walls on both sides of the control groove, the inflation pipe is equipped with an inflation pump and a one-way air inlet valve, and the exhaust pipe is equipped with an electrically controlled exhaust valve.

[0011] Preferably, a counterweight is installed on the top outer wall of the base plate, a push handle is welded on one side of the top outer wall of the base plate, and control buttons distributed equidistantly are installed on the top outer wall of the push handle, and the control buttons are connected to electrical components through wires.

[0012] In summary, the technical effects and advantages of the utility model are:

[0013] 1. In the utility model, the upper half of the pipeline is covered by the upper detection ring, and the lower detection ring is connected to the upper detection ring. After the connection is completed, the optical rangefinder starts to emit light. Since the pipeline and the detection ring are both circular, the light lengths of the optical rangefinder are all the same. Then the driving component drives the device to move. As the device moves along the pipeline direction, the light is irradiated on the outer wall of the pipeline to detect pipeline defects. When the pipeline is damaged, the light length corresponding to this position is different from other lengths. At this time, the prompt light corresponding to the optical rangefinder flashes to issue a prompt, reminding the inspection personnel that the position is damaged or defective. Compared with the inspection personnel's naked eye observation, light detection can detect subtle defects in the pipeline and maintain the pipeline in time. Light detection is more convenient, can accurately locate the defective part, prevent detection omissions, improve detection accuracy, and save more time.

[0014] 2. In the utility model, before the detection component works, the inflation and deflation of the control groove are adjusted through the inflation pipe and the exhaust pipe, so that the piston is pushed up or down by the air, and then the height of the detection component is adjusted through the control frame, which is convenient for detecting pipes with different installation heights and is more convenient to use. The counterweight block counterweights the device to prevent the center of the device from shaking due to instability. The control button controls the electrical components, which is more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 This is a schematic diagram of the main appearance structure in the embodiment of the present application;

[0017] Figure 2 This is a schematic diagram of the structure of the detection component in the embodiment of the present application;

[0018] Figure 3 Schematic diagram of the servo motor structure in the embodiment of the present application;

[0019] Figure 4 Schematic diagram of the control component structure in the embodiment of the present application.

[0020] In the figure: 1. base plate; 2. support block; 3. upper detection ring; 4. lower detection ring; 5. optical rangefinder; 6. warning light; 7. connecting block; 8. connecting groove; 9. fixing pin; 10. control groove; 11. control frame; 12. piston; 13. servo motor; 14. inflation tube; 15. exhaust pipe; 16. counterweight; 17. push handle; 18. control button. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Example 1

[0023] refer to Figure 1-4A defect detection device based on machine vision is shown, comprising a bottom plate 1, driving wheels are installed around the bottom outer wall of the bottom plate 1, the driving wheels are universal wheels, a driving component is installed on the bottom outer wall of the bottom plate 1, the driving component is connected to the driving wheel through a wire, a support block 2 is welded at one end of the top outer wall of the bottom plate 1, a control component is rotatably installed on the top of the support block 2, the control component is connected to the detection component, the detection component comprises an upper detection ring 3 and a lower detection ring 4, the upper detection ring 3 and the lower detection ring 4 are both semicircular, the upper detection ring 3 and the lower detection ring 4 have the same size, the upper detection ring 3 and the lower detection ring 4 are both provided with equidistantly distributed light rangefinders 5, the outer walls of the upper detection ring 3 and the lower detection ring 4 are both installed with equidistantly distributed prompt lights 6, the number of prompt lights 6 is the same as the number of light rangefinders 5, the diameter of the circle formed by the upper detection ring 3 and the lower detection ring 4 is larger than the diameter of the pipeline, there is a certain distance between the inner walls of the upper detection ring 3 and the lower detection ring 4 and the pipeline, the light rangefinder 5 is installed with a PLC controller through a wire, and the PLC controller is connected to the prompt light 6 through a wire.

[0024] By means of the above structure: when working, the device is moved to the side of the pipeline, and then the height of the upper detection ring 3 in the detection component is adjusted through the control component so that the upper detection ring 3 can cover the upper half of the pipeline, and then the lower detection ring 4 is connected to the upper detection ring 3. After the connection is completed, the light rangefinder 5 starts to emit light. Since the pipeline and the detection ring are both circular, the light lengths of the light rangefinder 5 are all the same. Then the driving component drives the device to move. As the device moves along the pipeline direction, the light is irradiated on the outer wall of the pipeline to detect pipeline defects. When the pipeline is damaged, the light length corresponding to this position is different from other lengths. At this time, the prompt light 6 corresponding to the light rangefinder 5 flashes to issue a prompt, reminding the inspection personnel that the position is damaged or defective. Compared with the inspection personnel's naked eye observation, light detection can detect subtle defects in the pipeline and thus maintain the pipeline in time. Light detection is more convenient, can accurately locate defective parts, prevent detection omissions, improve detection accuracy, and save more time.

[0025] like Figure 2 As shown, a connecting block 7 is welded to the bottom outer wall of the upper detection ring 3, a connecting groove 8 is provided on the top outer wall of the lower detection ring 4, the connecting groove 8 is matched with the connecting block 7, both ends of the lower detection ring 4 are connected with fixing pins 9 that pass into the connecting groove 8, the connecting block 7 is provided with a socket matched with the fixing pin 9, the upper detection ring 3 and the lower detection ring 4 are connected by the connecting block 7 and the connecting groove 8, which is convenient for the disassembly of the detection components and can carry out detection at any part of the pipeline.

[0026] Example 2

[0027] like Figure 4As shown, the control component includes a control groove 10 on which the top of the support block 2 is rotatably installed, a control frame 11 is slidably installed on the inner wall of the control groove 10, the control frame 11 is an "L"-shaped structure, a threaded rod is rotatably installed on the top of the upper detection ring 3, a threaded hole matched with the threaded rod is opened on the bottom outer wall of the control frame 11, a piston 12 is arranged at the bottom of the control frame 11, the piston 12 is matched with the control groove 10, a rotating shaft is welded to the outer wall of the bottom of the control groove 10, the rotating shaft is rotatably connected to the top of the support block 2, a driving groove is opened inside the support block 2, a servo motor 13 is installed inside the driving groove, the output shaft of the servo motor 13 is connected to the rotating shaft, and both sides of the control groove 10 An inflation pipe 14 and an exhaust pipe 15 leading into the control groove 10 are arranged at the bottom of the outer wall. The inflation pipe 14 is installed with an inflation pump and a one-way air inlet valve, and the exhaust pipe 15 is installed with an electrically controlled exhaust valve. Before the detection component works, the inflation and deflation of the control groove 10 are adjusted through the inflation pipe 14 and the exhaust pipe 15, so that the piston 12 is pushed up or down by the air, and then the height of the detection component is adjusted through the control frame 11, so as to facilitate the detection of pipelines with different installation heights and make it more convenient to use. The servo motor 13 drives the control component to rotate, and the activity of the base plate 1 is not affected during pipeline detection, so that the base plate 1 drives the detection component to move forward or backward along the pipeline.

[0028] like Figure 1 As shown, a counterweight 16 is installed on the top outer wall of the base plate 1, a push handle 17 is welded on one side of the top outer wall of the base plate 1, and control buttons 18 distributed equidistantly are installed on the top outer wall of the push handle 17. The control buttons 18 are connected to the electrical components through wires. The counterweight 16 counterweights the device to prevent the center of the device from shaking due to instability. The control buttons 18 control the electrical components, which is more convenient to use.

[0029] How this utility works:

[0030] When working, the device is moved to the side of the pipeline, and then the height of the upper detection ring 3 in the detection component is adjusted through the control component so that the upper detection ring 3 can cover the upper half of the pipeline, and then the lower detection ring 4 is connected to the upper detection ring 3. After the connection is completed, the light rangefinder 5 starts to emit light. Since the pipeline and the detection ring are both circular, the light lengths of the light rangefinder 5 are all the same. Then the driving component drives the device to move. As the device moves along the pipeline, the light is irradiated on the outer wall of the pipeline to detect pipeline defects. When the pipeline is damaged, the light length corresponding to this position is different from other lengths. At this time, the prompt light 6 corresponding to the light rangefinder 5 flashes to issue a prompt, reminding the inspection personnel that the position is damaged or defective. Compared with the naked eye observation of the inspection personnel, light detection can detect subtle defects in the pipeline and thus timely maintain the pipeline. In addition, light detection is more convenient, can accurately locate the defective part, prevent detection omissions, improve detection accuracy, and save more time.

[0031] The upper detection ring 3 and the lower detection ring 4 are connected by the connecting block 7 and the connecting groove 8, which is convenient for the disassembly of the detection components. The detection can be opened at any part of the pipeline. Before the detection component works, the inflation and deflation of the control groove 10 are adjusted by the inflation pipe 14 and the exhaust pipe 15, so that the piston 12 is pushed up or down by the air and then the height of the detection component is adjusted by the control frame 11, which is convenient for the detection of pipelines with different installation heights and more convenient to use. The servo motor 13 drives the control component to rotate. The activity of the base plate 1 is not affected during pipeline detection, which makes it convenient for the base plate 1 to drive the detection component forward or backward along the pipeline. The counterweight block 16 counterweights the device to prevent the center of the device from shaking due to instability. The control button 18 controls the electrical components, which is more convenient to use.

[0032] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A defect detection device based on machine vision, comprising a base plate (1), characterized in that: The bottom outer wall of the bottom plate (1) is equipped with driving wheels all around, the driving wheels are universal wheels, the bottom outer wall of the bottom plate (1) is equipped with a driving component, the driving component is connected to the driving wheel via a wire, a support block (2) is welded to one end of the top outer wall of the bottom plate (1), a control component is rotatably installed on the top of the support block (2), the control component is connected to a detection component, the detection component comprises an upper detection ring (3) and a lower detection ring (4), the upper detection ring (3) and the lower detection ring (4) are both semicircular, the upper detection ring (3) and the lower detection ring (4) are semicircular, and the upper detection ring (3) and the lower detection ring (4) are semicircular. The upper detection ring (3) is of the same size as the lower detection ring (4); both the upper detection ring (3) and the lower detection ring (4) are provided with light rangefinders (5) distributed at equal distances; the outer walls of the upper detection ring (3) and the lower detection ring (4) are provided with warning lights (6) distributed at equal distances; the number of the warning lights (6) is the same as the number of the light rangefinders (5); the diameter of the circle formed by the upper detection ring (3) and the lower detection ring (4) is greater than the diameter of the pipeline; and there is a certain distance between the inner walls of the upper detection ring (3) and the lower detection ring (4) and the pipeline.

2. The defect detection device based on machine vision according to claim 1, characterized in that: The optical distance meter (5) is equipped with a PLC controller via a wire, and the PLC controller is connected to a warning light (6) via a wire.

3. The defect detection device based on machine vision according to claim 1, characterized in that: A connecting block (7) is welded to the bottom outer wall of the upper detection ring (3), a connecting groove (8) is provided on the top outer wall of the lower detection ring (4), the connecting groove (8) is matched with the connecting block (7), both ends of the lower detection ring (4) are plugged with fixing pins (9) passing through the connecting groove (8), and the connecting block (7) is provided with a socket matched with the fixing pin (9).

4. The defect detection device based on machine vision according to claim 1, characterized in that: The control assembly comprises a control groove (10) on which the top of the support block (2) is rotatably mounted, a control frame (11) is slidably mounted on the inner wall of the control groove (10), the control frame (11) is an "L"-shaped structure, a threaded rod is rotatably mounted on the top of the upper detection ring (3), a threaded hole matched with the threaded rod is provided on the outer wall of the bottom of the control frame (11), and a piston (12) is provided at the bottom of the control frame (11), and the piston (12) is matched with the control groove (10).

5. The defect detection device based on machine vision according to claim 4, characterized in that: A rotating shaft is welded to the outer wall of the bottom of the control groove (10), and the rotating shaft is rotatably connected to the top of the support block (2). A driving groove is provided inside the support block (2), and a servo motor (13) is installed inside the driving groove. The output shaft of the servo motor (13) is connected to the rotating shaft.

6. The defect detection device based on machine vision according to claim 4, characterized in that: An air charging pipe (14) and an exhaust pipe (15) which are connected to the interior of the control groove (10) are arranged at the bottom of the outer walls on both sides of the control groove (10); the air charging pipe (14) is equipped with an air pump and a one-way air inlet valve, and the exhaust pipe (15) is equipped with an electrically controlled exhaust valve.

7. The defect detection device based on machine vision according to claim 1, characterized in that: A counterweight (16) is installed on the top outer wall of the base plate (1), a push handle (17) is welded to one side of the top outer wall of the base plate (1), and control buttons (18) distributed at equal distances are installed on the top outer wall of the push handle (17), and the control buttons (18) are connected to electrical components through wires.

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