Pipeline surface crack detection device

Abstract

The utility model is applicable to the field of pipeline detection, and provides a pipeline surface crack detection device, which comprises a base, a driving assembly, two clamping assemblies and a detection assembly, the base comprises a bottom plate, the upper surface of the bottom plate is fixedly connected with a support plate, and the support plate is internally and rotatably connected with a driven plate; according to the pipeline detection device, comprehensive and efficient pipeline detection is achieved, the first motor drives the pipeline to rotate, meanwhile, the second motor drives the supporting frame of the detection assembly to move into the pipeline, the first detection head and the second detection head can synchronously detect the outer wall and the inner wall of the pipeline respectively, the detection efficiency is greatly improved, and the detection time is shortened; and through cooperation of the driving rod, the driving frame and the gear, the first detection head and the second detection head can monitor different positions of the pipeline along different angles, mutual interference is avoided, detection comprehensiveness is ensured, and any area where cracks possibly exist is not released.

Description

Technical Field

[0001] The utility model belongs to the field of pipeline detection, and particularly relates to a pipeline surface crack detection device. Background Art

[0002] In modern industrial production, as a key basic component for constructing various conveying systems, pipe materials are widely used in many fields such as petroleum, chemical industry, electric power, and construction. The quality of pipe materials directly affects the safe and stable operation of the entire system and the smooth progress of production activities.

[0003] At present, in the inspection process before the pipe materials leave the factory, most of the inspection work focuses on the outer surface of the pipe materials. This is mainly because the outer surface inspection is relatively convenient and intuitive, and obvious defects such as scratches and pits can be initially detected by visual inspection or simple tools. However, the condition of the inner surface of the pipe materials cannot be ignored either;

[0004] Therefore, a pipeline surface crack detection device is needed to solve the above problems. Summary of the Utility Model

[0005] The purpose of the embodiments of the utility model is to provide a pipeline surface crack detection device to solve the problems mentioned in the above background art.

[0006] To achieve the above purpose, the utility model provides the following technical solutions:

[0007] A pipeline surface crack detection device includes a base, a driving component, two clamping components, and a detection component. The base includes a bottom plate, and a support plate is fixedly connected to the upper surface of the bottom plate. A driven plate is rotatably connected inside the support plate;

[0008] The driving component includes a first cylinder. One end of the first cylinder is fixedly connected to the bottom plate, and the other end of the first cylinder is connected to a movable plate. The movable plate is lapped on the upper surface of the bottom plate. One side of the movable plate is connected to a first motor, and a driving plate is rotatably connected inside the movable plate. The output shaft of the first motor is connected to the driving plate;

[0009] The clamping component includes a second cylinder. The two second cylinders are respectively connected to the back surfaces of the driving plate and the driven plate. Both ends of the second cylinder are connected to a connecting frame. The two connecting frames are both connected to a sliding rod on the side close to each other. The two sliding rods on one side are slidably connected inside the driving plate, and the two sliding rods on the other side are slidably connected inside the driven plate. One ends of the two sliding rods on one side close to each other are both connected to a clamping plate;

[0010] A pipeline is lapped on the side close to each other of the two clamping plates on one side;

[0011] The detection component includes a second motor and a first threaded rod. The second motor is connected to one side of the bottom plate. The first threaded rod is rotatably connected in the first limiting groove. One end of the first threaded rod is connected to the second motor. An activity frame is externally threaded to the first threaded rod. The activity frame is connected to the support frame. Inside the support frame, a plurality of first detection heads and a plurality of second detection heads are respectively hinged through a plurality of pin rods. All the pin rods are connected to a gear. The top of the support frame is connected to a driving rod. A driving frame is externally threaded to the driving rod. The driving frame meshes with a plurality of gears.

[0012] In a further technical solution, the driving rod consists of a driving motor and a threaded column. The output shaft of the driving motor is connected to the threaded column. The threaded column is rotatably connected to the top of the support frame. The threaded column is threaded into the driving frame.

[0013] In a further technical solution, the shape of the driving frame is set to be U-shaped. The driving frame consists of a connecting plate and two racks. One end of each of the two racks is connected to the driving frame. The rack located above is threaded to the threaded column. A guiding rod is slidably connected to the bottom of the rack located below. On the side where the two racks are close to each other, both are meshed with a plurality of gears.

[0014] In a further technical solution, a first limiting groove and a second limiting groove are opened at the bottom of the bottom plate.

[0015] In a further technical solution, the movable plate is slidably connected in the second limiting groove, and the activity frame is slidably connected in the first limiting groove.

[0016] In a further technical solution, the guiding rod is connected to the lower surface of the support frame. Two limiting rods are connected inside the support frame. Both of the two limiting rods are slidably connected in the support plate.

[0017] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0018] In the present utility model, the pipeline detection is comprehensive and efficient: the first motor drives the pipeline to rotate. At the same time, the second motor drives the support frame of the detection component to move into the pipeline, so that the first detection head and the second detection head can respectively perform synchronous detection on the outer wall and the inner wall of the pipeline, greatly improving the detection efficiency and reducing the detection time. Moreover, through the cooperation of the driving rod, the driving frame and the gear, the first detection head and the second detection head can monitor different positions of the pipeline along different angles, avoiding mutual interference, ensuring the comprehensiveness of the detection, and not missing any area where cracks may exist.

[0019] The utility model can efficiently and accurately position and clamp the pipeline: the first cylinder drives the movable plate and the active plate to move, and the distance between the active plate and the driven plate can be quickly and accurately adjusted according to the length of the pipeline to achieve the initial positioning of the pipeline. Then, the second cylinder drives the sliding rod and the clamping plate to move, which can firmly clamp and fix the pipeline to avoid displacement or shaking of the pipeline during the detection process, provide a stable foundation for subsequent detection work, and effectively improve the accuracy and reliability of detection;

[0020] The utility model has stable and reliable motion control: the limit grooves, guide rods, limit rods and other structures arranged in the device respectively limit the movement of the movable plate, movable frame, driving frame and supporting frame, to ensure that each component is stable and without shaking during the movement, reduce motion deviation, improve the stability and reliability of the overall operation of the device, and thus improve the accuracy of the detection results.

[0021] In order to more clearly illustrate the structural features and effects of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the utility model in a frontal perspective;

[0023] Figure 2 It is a partial rear-view stereoscopic structural diagram of the utility model;

[0024] Figure 3 It is a schematic diagram of a sectional structure of the utility model in a side view;

[0025] Figure 4 It is a schematic diagram of the structure of a partial three-dimensional rear view of the bottom plate of the utility model.

[0026] In the figure: 1. base; 11. bottom plate; 12. first limiting groove; 13. second limiting groove; 14. support plate; 15. driven plate; 2. active component; 21. first cylinder; 22. movable plate; 23. first motor; 24. active plate; 3. clamping component; 31. second cylinder; 32. connecting frame; 33. sliding rod; 34. clamping plate; 4. pipeline; 5. detection component; 51. second motor; 52. first threaded rod; 53. movable frame; 54. support frame; 55. first detection head; 56. gear; 57. drive frame; 58. drive rod; 59. guide rod; 510. limiting rod; 511. second detection head. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0028] The following describes the specific implementation of the present utility model in detail in conjunction with specific embodiments.

[0029] Embodiment 1

[0030] As Figures 1-4 shown, the embodiment of the present utility model provides a pipeline surface crack detection device, including a base 1, a driving component 2, two clamping components 3 and a detection component 5. The base 1 includes a bottom plate 11. A first limiting groove 12 and a second limiting groove 13 are opened at the bottom of the bottom plate 11. A support plate 14 is fixedly connected to the upper surface of the bottom plate 11. A driven plate 15 is rotatably connected inside the support plate 14;

[0031] The driving component 2 includes a first cylinder 21. One end of the first cylinder 21 is fixedly connected to the bottom plate 11, and the other end of the first cylinder 21 is connected to a movable plate 22. The movable plate 22 is slidably connected in the second limiting groove 13. The second limiting groove 13 can limit the moving movable plate 22, so that the movable plate 22 can move smoothly. The movable plate 22 is lapped on the upper surface of the bottom plate 11. One side of the movable plate 22 is connected to a first motor 23. A driving plate 24 is rotatably connected inside the movable plate 22. The output shaft of the first motor 23 is connected to the driving plate 24;

[0032] The clamping component 3 includes second cylinders 31. The two second cylinders 31 are respectively connected to the back surfaces of the driving plate 24 and the driven plate 15. Both ends of the second cylinder 31 are connected to a connecting frame 32. The surfaces of the two connecting frames 32 close to each other are both connected to a sliding rod 33. The two sliding rods 33 on one side are slidably connected inside the driving plate 24, and the two sliding rods 33 on the other side are slidably connected inside the driven plate 15. The ends of the two sliding rods 33 on one side close to each other are both connected to a clamping plate 34;

[0033] A pipeline 4 is lapped on the surfaces of the two clamping plates 34 on one side close to each other;

[0034] The detection component 5 includes a second motor 51 and a first threaded rod 52. The second motor 51 is connected to one side of the bottom plate 11. The first threaded rod 52 is rotatably connected in the first limiting groove 12. One end of the first threaded rod 52 is connected to the second motor 51. A movable frame 53 is threadedly connected to the first threaded rod 52. The movable frame 53 is slidably connected in the first limiting groove 12. The first limiting groove 12 can limit the moving movable frame 53. The movable frame 53 is connected to a support frame 54. Inside the support frame 54, a number of first detection heads 55 and a number of second detection heads 511 are respectively hinged through a number of pin rods.

[0035] In this embodiment, the device is equipped with a central controller which can adopt a PLC controller. The controller is connected to a gas source, such as an air compressor, through an air pipe. The gas source provides power for the first cylinder 21 and the second cylinder 31. The specific layout structure of the air pipe can be adaptively arranged according to the actual situation;

[0036] The solenoid valve of the first cylinder 21 is connected to the output port of the central controller. When it is necessary to preliminarily position the pipeline 4, the operator connects to the central controller through the operation panel and issues a control instruction. The instruction is transmitted to the central controller. After receiving the instruction, the central controller sends a signal to the solenoid valve of the first cylinder 21. The solenoid valve opens, and the gas from the gas source enters the first cylinder 21, pushing the piston to move. The piston drives the movable plate 22 and the active plate 24 to move. When the distance between the active plate 24 and the driven plate 15 is adjusted to a size suitable for the length of the pipeline 4, the central controller controls the first cylinder 21 to stop moving according to the preset manual instruction of the operator;

[0037] After the distance between the active plate 24 and the driven plate 15 is adjusted to a suitable size according to the length of the pipeline 4, the two ends of the pipeline 4 are respectively placed on the lower clamping plates 34, and one end of the pipeline 4 is in contact with the driven plate 15. Control the first cylinder 21 to extend. The extended first cylinder 21 drives the movable frame 53 to move. The moving movable frame 53 contacts the other end of the pipeline 4. At this time, the pipeline 4 is preliminarily positioned;

[0038] The control principle of the second cylinder 31 is similar to that of the first cylinder 21. Its solenoid valve is also connected to the output port of the central controller. After the preliminary positioning of the pipeline 4 is completed, the operator issues a clamping instruction through the operation panel. The instruction is transmitted to the central controller. After receiving the instruction, the central controller sends a signal to the solenoid valve of the second cylinder 31. The solenoid valve opens, and the gas from the gas source enters the second cylinder 31. The two contracted second cylinders 31 both drive the slide rod 33 to slide in the driven plate 15 and the active plate 24 through the connecting frame 32. The sliding slide rod 33 drives the clamping plate 34 to move, so that the two corresponding clamping plates 34 approach each other. The two approaching clamping plates 34 contact the outer surface of the pipeline 4. At this time, the pipeline 4 is clamped and fixed;

[0039] The first motor 23 and the second motor 51 are connected to the central controller through wires. After the pipeline 4 is clamped and fixed, the operator issues a rotation instruction on the operation panel. The instruction is transmitted to the central controller. After receiving the instruction, the central controller sends a driving signal to the first motor 23. The first motor 23 starts to work. Its output shaft drives the active plate 24 to rotate. The active plate 24 drives the pipeline 4 to rotate through the fixing component. At the same time, the pipeline 4 drives the driven plate 15 to rotate in the support plate 14;

[0040] The operator issues a detection component 5 movement instruction on the operation panel. The instruction is transmitted to the central controller. After receiving the instruction, the central controller sends a forward rotation signal to the second motor 51. The second motor 51 starts to work. The forward rotating second motor 51 drives the threaded rod to rotate. The rotating threaded rod drives the support frame 54 to move through the movable frame 53. The moving support frame passes through the through groove opened in the middle of the driven plate 15 and then slowly moves into the pipeline 4.

[0041] The first detection head 55 and the second detection head 511 are connected to the data acquisition and processing module and can be integrated in the central controller. The data acquisition and processing module is connected to the input and output ports of the central controller through signal lines. After the support frame 54 moves into the pipeline 4, the first detection head 55 and the second detection head 511 start to detect the outer wall and inner wall of the pipeline 4, and collect relevant data on the surface of the pipeline 4 in real time, such as the position and size of cracks and other information. The detection head converts the collected signal into an electrical signal and transmits it to the data acquisition and processing module through the signal line. The data acquisition and processing module analyzes and processes the signal. On the one hand, it can display the detection result in real time on the operation panel for the convenience of the operator to observe. A number of working first detection heads 55 and a number of second detection heads 511 respectively detect the outer wall and inner wall of the rotating pipeline 4, improving the detection efficiency and quality of the pipeline 4.

[0042] Embodiment 2

[0043] Please refer to Figures 1-4 , the difference between this embodiment and Embodiment 1 is that a number of pin rods are all connected to the gear 56. The top of the support frame 54 is connected with a driving rod 58. The driving rod 58 is externally threaded with a driving frame 57. The driving frame 57 meshes with a number of gears 56. The driving rod 58 is composed of a driving motor and a threaded column. The output shaft of the driving motor is connected to the threaded column. The threaded column is rotatably connected to the top of the support frame 54 and is threaded in the driving frame 57. The shape of the driving frame 57 is set as U-shaped. The driving frame 57 is composed of a connecting plate and two racks. One end of the two racks is connected to the driving frame 57. The rack located above is threaded with the threaded column. The bottom of the rack located below is slidably connected with a guide rod 59. The side where the two racks are close to each other meshes with a number of gears 56. The guide rod 59 is connected to the lower surface of the support frame 54. The guide rod 59 can limit the driving frame 57, so that the driving frame 57 is not easily rotated under the action of the rotating threaded column, and the driving frame 57 can move smoothly along the axial direction of the guide rod 59 under the action of the rotating threaded column.

[0044] Two limiting rods 510 are connected inside the support frame 54. Both of the two limiting rods 510 are slidably connected in the support plate 14. The limiting rods 510 slidably connected in the support plate 14 can limit the moving support frame, so that the support frame 54 can move smoothly in the driven plate 15 and the pipeline 4.

[0045] In this embodiment, since one end of the support frame 54 is provided with a ball, after the support frame 54 drives the ball to contact the active plate 24, the second motor 51 is controlled to stop working, and at the same time, the driving motor is controlled to work. The working driving motor drives the driving frame 57 to move along the axial direction of the threaded rod through the threaded column. The moving driving frame 57 drives a plurality of gears 56 to rotate. The rotation directions of the plurality of upper gears 56 and the plurality of lower gears 56 are opposite. Therefore, the detection positions of the plurality of first detection heads 55 and the plurality of second detection heads 511 are displaced, preventing the first detection heads 55 and the second detection heads 511 from interfering with each other, so that the rotating plurality of first detection heads 55 and the plurality of second detection heads 511 can monitor different positions of the rotating pipeline 4 at different angles, improving the comprehensiveness of the detection of the pipeline 4;

[0046] The types of the first detection head 55 and the second detection head 511 can be set as visual detection structures such as industrial cameras: the surface of the pipeline 4 is photographed or filmed by the industrial camera, and then the obtained image is analyzed using an image recognition algorithm to determine whether there are cracks and the characteristics of the cracks. This detection structure has strong intuitiveness and can clearly display the appearance of the cracks, and is suitable for detection scenarios with high requirements for the appearance characteristics of the cracks, and can be used in combination with other detection structures to improve the accuracy of detection.

[0047] The circuits, electronic components and modules involved are all prior art and can be fully realized by those skilled in the art without further elaboration. The content protected by the present utility model does not involve improvements to software and methods either.

[0048] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A pipeline surface crack detection device, comprising a base (1), a driving component (2), two clamping components (3) and a detection component (5), characterized in that: The base (1) includes a bottom plate (11), a support plate (14) is fixedly connected to the upper surface of the bottom plate (11), and a driven plate (15) is rotatably connected inside the support plate (14); The active component (2) includes a first cylinder (21), one end of the first cylinder (21) is fixedly connected to the bottom plate (11), the other end of the first cylinder (21) is connected to a movable plate (22), the movable plate (22) is lapped on the upper surface of the bottom plate (11), a first motor (23) is connected to one side of the movable plate (22), a driving plate (24) is rotatably connected inside the movable plate (22), and the output shaft of the first motor (23) is connected to the driving plate (24); The clamping component (3) includes a second cylinder (31), two second cylinders (31) are respectively connected to the back surfaces of the driving plate (24) and the driven plate (15), both ends of the second cylinder (31) are connected to a connecting frame (32), and a sliding rod (33) is connected to the side of the two connecting frames (32) close to each other. The two sliding rods (33) on one side are slidably connected inside the driving plate (24), the two sliding rods (33) on the other side are slidably connected inside the driven plate (15), and the ends of the two sliding rods (33) on one side close to each other are both connected to a clamping plate (34); A pipe (4) is lapped on the side of the two clamping plates (34) close to each other; The detection component (5) includes a second motor (51) and a first threaded rod (52), the second motor (51) is connected to one side of the bottom plate (11), the first threaded rod (52) is rotatably connected inside a first limiting groove (12), one end of the first threaded rod (52) is connected to the second motor (51), a movable frame (53) is threadedly connected to the outside of the first threaded rod (52), the movable frame (53) is connected to a support frame (54), and a number of first detection heads (55) and a number of second detection heads (511) are respectively hinged inside the support frame (54) through a number of pin rods. All the pin rods are connected to a gear (56). A driving rod (58) is connected to the top of the support frame (54), a driving frame (57) is threadedly connected to the outside of the driving rod (58), and the driving frame (57) meshes with a number of gears (56).

2. The pipeline surface crack detection device according to claim 1, wherein: The driving rod (58) is composed of a driving motor and a threaded column. The output shaft of the driving motor is connected to the threaded column. The threaded column is rotatably connected to the top of the support frame (54), and the threaded column is threadedly connected inside the driving frame (57).

3. The pipeline surface crack detection device according to claim 1, wherein: The driving frame (57) is U-shaped. The driving frame (57) is composed of a connecting plate and two racks. One end of the two racks is connected to the driving frame (57). The rack located above is threadedly connected to the threaded column. A guide rod (59) is slidably connected to the bottom of the rack located below. The sides of the two racks close to each other both mesh with a number of gears (56).

4. The pipeline surface crack detection device according to claim 1, characterized in that: A first limiting groove (12) and a second limiting groove (13) are opened at the bottom of the bottom plate (11).

5. The pipeline surface crack detection device according to claim 4, characterized in that: The movable plate (22) is slidably connected in the second limiting groove (13), and the movable frame (53) is slidably connected in the first limiting groove (12).

6. The pipeline surface crack detection device according to claim 3, wherein: The guide rod (59) is connected to the lower surface of the support frame (54), and two limiting rods (510) are connected in the support frame (54). Both of the two limiting rods (510) are slidably connected in the support plate (14).

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