A method for detecting disc-shaped suspension porcelain insulator

Abstract

The present application belongs to the technical field of disc suspension porcelain insulator detection, in particular to a disc suspension porcelain insulator detection method, comprising: fixing the disc suspension porcelain insulator body in the rotating installation mechanism; turning on the laser scanner to obtain the surface three-dimensional point cloud image of the disc suspension porcelain insulator body, and simultaneously starting the rotating installation mechanism to drive the disc suspension porcelain insulator body to rotate to obtain the complete three-dimensional point cloud image of the outer circumferential surface of the disc suspension porcelain insulator body; and calculating the deflection of the disc suspension porcelain insulator body; the disc suspension porcelain insulator detection method of the present application introduces the height adjustment installation mechanism for installing the laser scanner, can adjust the height of the laser scanner according to the installation height of the disc suspension porcelain insulator body, is suitable for disc suspension porcelain insulator detection of different sizes, and has a wide range of applications; the rotating installation mechanism can stably install the disc suspension porcelain insulator body, and reduce the amplitude of shaking during rotation.

Description

Technical Field

[0001] This invention belongs to the field of testing technology for disc-type suspension porcelain insulators, and specifically relates to a testing method for disc-type suspension porcelain insulators. Background Technology

[0002] Disc-type suspension porcelain insulators are important components of overhead transmission lines, serving to assemble, fix, and support conductors to ensure sufficient electrical insulation between the conductors and high-voltage line supports, thus ensuring power transmission safety. Currently, the vast majority of disc-type suspension porcelain insulators in China are still produced entirely manually, with all insulator gluing processes completed manually. It is difficult to guarantee the coaxiality, porosity, and filling degree among the iron cap, porcelain components, and steel feet in disc-type suspension porcelain insulator assemblies, potentially leading to varying degrees of skewness defects. Therefore, to ensure the quality of disc-type suspension porcelain insulators, skewness detection is crucial. Skewness in disc-type suspension porcelain insulators mainly includes steel foot skewness and iron cap skewness.

[0003] In the market, the skewness detection of disc suspension porcelain insulators is usually performed using laser scanners. For example, Chinese invention patent application number CN202210610377.3 discloses a "method for detecting the skewness of a disc suspension porcelain insulator," which includes: scanning the surface of the insulator with a three-dimensional point cloud to obtain a three-dimensional point cloud of the insulator surface; slicing the three-dimensional point cloud of the insulator surface to obtain all point clouds on the slice; rotating the insulator one revolution to obtain a central slice of the insulator; performing segmented fitting on the point clouds on all slices; and calculating the skewness of the insulator based on the fitting results. This invention effectively detects the skewness of insulators.

[0004] Although this method can detect the degree of insulator skew, it cannot be adapted to disc suspension porcelain insulators of different sizes because the height of the iron cap of disc suspension porcelain insulators of different sizes is different. If the iron cap is too high or too low, the laser scanner cannot fully scan it.

[0005] To address the aforementioned issues, this application proposes a testing method for disc-type suspension porcelain insulators.

[0006] The information disclosed in the background section is only for enhancing the understanding of the background of the present invention, and therefore may include information that does not constitute prior art known to those skilled in the art. Summary of the Invention

[0007] To address the aforementioned problems in the existing technology, this invention provides a method for testing disc-type suspension porcelain insulators, which is convenient to use and has a wide range of applications.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a method for testing disc-type suspension porcelain insulators, the method comprising the following steps:

[0009] Step 1: Fix the disc-shaped suspension porcelain insulator body in the rotating installation mechanism, and adjust the height of the laser scanner according to the height of the disc-shaped suspension porcelain insulator body by adjusting the height of the installation mechanism;

[0010] Step 2: Turn on the laser scanner and scan the disc-shaped suspension porcelain insulator body to obtain a 3D point cloud image of the disc-shaped suspension porcelain insulator body surface. At the same time, start the rotating installation mechanism to drive the disc-shaped suspension porcelain insulator body to rotate, so as to obtain a complete 3D point cloud image of the outer periphery of the disc-shaped suspension porcelain insulator body:

[0011] Step 3: Slice the entire three-dimensional point cloud image of the outer periphery of the disc suspension porcelain insulator to obtain all the point clouds on the slice;

[0012] Step 4: Perform segmented fitting on the point cloud of all slices, and calculate the skewness of the disc suspension porcelain insulator body based on the fitting results.

[0013] As a preferred technical solution of the present invention, in step one, fixing the disc-shaped suspension porcelain insulator body in the rotating mounting mechanism includes two cases: placing the steel foot at the bottom and placing the iron cap at the bottom.

[0014] As a preferred technical solution of the present invention, in step two, the three-dimensional point cloud images of the entire outer peripheral surface of the disc-shaped suspension porcelain insulator body include the three-dimensional point cloud images when the steel foot is located below and the three-dimensional point cloud images when the iron cap is located below.

[0015] As a preferred embodiment of the present invention, the height adjustment mounting mechanism includes a movable mounting plate, a threaded column, and a height adjustment motor. The disc-shaped suspension porcelain insulator body is mounted on the movable mounting plate. A vertical plate is mounted on the top of the base. A guide slider is fixed to the outer wall of the movable mounting plate, and a guide sliding hole is formed vertically inside the vertical plate. The guide slider passes through the guide sliding hole and can slide along the guide sliding hole. A movable seat is fixed to the protruding end of the guide slider. A fixed plate is fixed to the top of the outer side of the vertical plate. The threaded column is mounted vertically between the fixed plate and the base using bearing support, and the threaded column passes through the movable seat and is connected to the movable seat by a threaded engagement. The height adjustment motor is mounted on the fixed plate to drive the threaded column to rotate. The specific steps are as follows:

[0016] Step 1: Based on the installation height of the disc-shaped suspension porcelain insulator body, adjust the height of the motor to drive the threaded column to rotate. Under the action of the threaded rotation, the threaded column drives the movable seat to move vertically. The movable seat uses the guide slider to drive the movable mounting plate to move vertically, thereby realizing the adjustment of the laser scanner height.

[0017] As a preferred embodiment of the present invention, a guide column is also fixed between the fixed plate and the base, passing through the movable seat.

[0018] As a preferred embodiment of the present invention, the rotating mounting mechanism includes a rotary motor, a rotating disk, a telescopic column, a telescopic spring, a support plate, an arc-shaped clamping plate, a flipping connecting rod, and a suction cup. The rotary motor is mounted on the top surface of the base, the rotating disk is fixed on the output shaft of the rotary motor, the telescopic column is mounted on the top surface of the rotating disk, the support plate is fixed at the top end of the telescopic column, and the telescopic spring is sleeved on the telescopic column and located between the rotating disk and the support plate. Multiple arc-shaped clamping plates are evenly spaced along the circumferential direction, and rubber pads are bonded and fixed to the inner walls of the arc-shaped clamping plates. Multiple columns are also fixed on the top surface of the rotating disk, evenly spaced along the circumferential direction. The suction cup is fixed to the top end of the columns. The top end of the flipping connecting rod is hinged to the arc-shaped clamping plate, and the bottom end is hinged to the support plate. An operating rod that penetrates the columns is also fixed on the arc-shaped clamping plate. An operating disk is fixed at the end of the operating rod away from the arc-shaped clamping plate. The specific steps are as follows:

[0019] Step 1: Pull the operating lever outwards. At this time, the operating lever will cause the flip connecting rod to flip outwards, and the bottom end of the flip connecting rod will press down on the support plate, so that the telescopic column and telescopic spring will retract.

[0020] Step 2: Place the iron cap at the top or the steel foot at the bottom of the disc-shaped suspension porcelain insulator body between multiple arc-shaped clamps, and make the iron cap or steel foot press against the support plate. Press down the disc-shaped suspension porcelain insulator body appropriately until the suction cup adheres to the outer wall of the support plate.

[0021] Step 3: Release the operating lever. At this time, the telescopic spring releases its elasticity, which pushes the support plate to rise and reset. At the same time, the flipping connecting rod drives the arc-shaped clamp to move inward, using the rubber pad to clamp the iron cap or steel foot.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows: The disc suspension porcelain insulator detection method of the present invention introduces a height adjustment installation mechanism for installing a laser scanner, which can adjust the height of the laser scanner according to the installation height of the disc suspension porcelain insulator body, and is applicable to the detection of disc suspension porcelain insulators of different sizes, with a wide range of applications; the rotating installation mechanism can install the disc suspension porcelain insulator body more stably, reducing the amplitude of vibration during rotation.

[0023] Other additional advantages and benefits of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0024] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0025] Figure 1 This is a schematic diagram of the structure of the present invention;

[0026] Figure 2 This is a schematic diagram of the isometric structure of the present invention;

[0027] Figure 3 For the present invention Figure 1 Enlarged structural diagram at point A in the diagram;

[0028] Figure 4 This is a schematic diagram of the detection process of the present invention;

[0029] In the diagram: 1. Disc-shaped suspension porcelain insulator body; 2. Iron cap; 3. Steel foot; 4. Laser scanner; 5. Base; 6. Height adjustment installation mechanism; 7. Rotation installation mechanism; 8. Movable mounting plate; 9. Vertical plate; 10. Guide slider; 11. Guide sliding hole; 12. Movable seat; 13. Fixed plate; 14. Threaded column; 15. Height adjustment motor; 16. Guide column; 17. Rotary motor; 18. Rotating disc; 19. Telescopic column; 20. Telescopic spring; 21. Support plate; 22. Arc-shaped clamp; 23. Rubber pad; 24. Flip connecting rod; 25. Operating lever; 26. Operating panel; 27. Vertical column; 28. Suction cup. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] Please see Figures 1-4 The present invention provides the following technical solution: a method for testing disc-type suspension porcelain insulators, the method comprising the following steps:

[0032] Step 1: Fix the disc-shaped suspension porcelain insulator body 1 in the rotating installation mechanism 7, and adjust the height of the laser scanner 4 according to the height of the disc-shaped suspension porcelain insulator body 1 through the height adjustment installation mechanism 6;

[0033] Step 2: Turn on the laser scanner 4 and scan the disc-shaped suspension porcelain insulator body 1 to obtain a three-dimensional point cloud image of the surface of the disc-shaped suspension porcelain insulator body 1. At the same time, start the rotating installation mechanism 7 to drive the disc-shaped suspension porcelain insulator body 1 to rotate, so as to obtain a complete three-dimensional point cloud image of the outer circumference of the disc-shaped suspension porcelain insulator body 1.

[0034] Step 3: Slice the entire three-dimensional point cloud image of the outer periphery of the disc-shaped suspension porcelain insulator body 1 to obtain all the point clouds on the slice;

[0035] Step 4: Perform segmented fitting on the point cloud of all slices, and calculate the skewness of the disc-shaped suspension porcelain insulator body 1 based on the fitting results.

[0036] From the appendix Figure 1 and attached Figure 2 As shown, as an optional embodiment, in this embodiment, in step one, fixing the disc-shaped suspension porcelain insulator body 1 in the rotating mounting mechanism 7 includes two situations: placing the steel foot 3 at the bottom and placing the iron cap 2 at the bottom, so as to avoid the existence of detection blind spots that prevent the iron cap 2 or the steel foot 3 from being scanned.

[0037] From the appendix Figure 1 and attached Figure 2 As shown, as an optional embodiment, in this embodiment, in step two, the three-dimensional point cloud images of the entire outer periphery of the disc-shaped suspension porcelain insulator body 1 include the three-dimensional point cloud images when the steel foot 3 is located below and the three-dimensional point cloud images when the iron cap 2 is located below.

[0038] From the appendix Figure 1 and attached Figure 2 As shown, in an optional embodiment, the height adjustment mechanism 6 includes a movable mounting plate 8, a threaded column 14, and a height adjustment motor 15. The disc-shaped suspension porcelain insulator body 1 is mounted on the movable mounting plate 8. A vertical plate 9 is mounted on the top of the base 5. A guide slider 10 is fixed on the outer wall of the movable mounting plate 8, and a guide sliding hole 11 is opened vertically in the vertical plate 9. The guide slider 10 passes through the guide sliding hole 11 and can slide along the guide sliding hole 11. A movable seat 12 is fixed on the protruding end of the guide slider 10. A fixed plate 13 is fixed on the top of the outer side of the vertical plate 9. The threaded column 14 is mounted vertically between the fixed plate 13 and the base 5 using bearing support. The threaded column 14 passes through the movable seat 12 and is connected to the movable seat 12 by threaded engagement. The height adjustment motor 15 is mounted on the fixed plate 13 to drive the threaded column 14 to rotate. The specific steps are as follows:

[0039] Step 1: Based on the installation height of the disc-shaped suspension porcelain insulator body 1, the height adjustment motor 15 drives the threaded column 14 to rotate. Under the threaded rotation action, the threaded column 14 drives the movable seat 12 to move in the vertical direction. The movable seat 12 uses the guide slider 10 to drive the movable mounting plate 8 to move in the vertical direction, thereby realizing the adjustment of the height of the laser scanner 4.

[0040] From the appendix Figure 1 and attached Figure 2 As shown, as an optional embodiment, in this embodiment, a guide post 16 that passes through the movable seat 12 is also fixed between the fixed plate 13 and the base 5, which improves the stability of the movable mounting plate 8.

[0041] From the appendix Figure 1 Appendix Figure 2 and attached Figure 3 As shown, in one optional embodiment, the rotating mounting mechanism 7 includes a rotary motor 17, a rotating disk 18, a telescopic column 19, a telescopic spring 20, a support plate 21, an arc-shaped clamping plate 22, a flipping connecting rod 24, and a suction cup 28. The rotary motor 17 is mounted on the top surface of the base 5, the rotating disk 18 is fixed on the output shaft of the rotary motor 17, the telescopic column 19 is mounted on the top surface of the rotating disk 18, the support plate 21 is fixed on the top end of the telescopic column 19, and the telescopic spring 20 is sleeved on the telescopic column 19 and located between the rotating disk 18 and the support plate 21. Multiple arc-shaped clamps 22 are evenly spaced along the circumference, and rubber pads 23 are bonded and fixed to the inner wall of the arc-shaped clamps 22. Multiple columns 27 are also fixed on the top surface of the rotating disk 18, which are evenly spaced along the circumference. Suction cups 28 are fixed to the top of the columns 27. The top of the flip connecting rod 24 is hinged to the arc-shaped clamps 22, and the bottom is hinged to the support plate 21. An operating rod 25 is also fixed on the arc-shaped clamps 22, which passes through the columns 27. An operating disk 26 is fixed at the end of the operating rod 25 away from the arc-shaped clamps 22. The specific steps are as follows:

[0042] Step 1: Pull the operating lever 25 outwards. At this time, the operating lever 25 will cause the flip connecting rod 24 to flip outwards, and the bottom end of the flip connecting rod 24 will press down on the support plate 21, so that the telescopic column 19 and the telescopic spring 20 will retract.

[0043] Step 2: Place the iron cap 2 at the top or the steel foot 3 at the bottom of the disc-shaped suspension porcelain insulator body 1 between multiple arc-shaped clamps 22, and make the iron cap 2 or the steel foot 3 press against the support plate 21, and press down the disc-shaped suspension porcelain insulator body 1 appropriately until the suction cup 28 adheres to the outer wall of the support plate 21.

[0044] Step 3: Release the operating lever 25. At this time, the telescopic spring 20 releases its elastic force, which pushes the support plate 21 to rise and reset. At the same time, the flipping connecting rod 24 drives the arc-shaped clamping plate 22 to move inward, and the rubber pad 23 clamps the iron cap 2 or steel foot 3.

[0045] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A method for testing disc-type suspension porcelain insulators, characterized in that: The method for testing disc-type suspension porcelain insulators includes the following steps: Step 1: Fix the disc-shaped suspension porcelain insulator body (1) in the rotating installation mechanism (7), and adjust the height of the laser scanner (4) according to the height of the disc-shaped suspension porcelain insulator body (1) through the height adjustment installation mechanism (6); Step 2: Turn on the laser scanner (4) and scan the disc-shaped suspension porcelain insulator body (1) to obtain a three-dimensional point cloud image of the surface of the disc-shaped suspension porcelain insulator body (1). At the same time, start the rotating installation mechanism (7) to drive the disc-shaped suspension porcelain insulator body (1) to rotate, so as to obtain a complete three-dimensional point cloud image of the outer circumference of the disc-shaped suspension porcelain insulator body (1): Step 3: Slice the three-dimensional point cloud image of the outer periphery of the disc suspension porcelain insulator body (1) to obtain all the point clouds on the slice; Step 4: Perform segmented fitting on the point cloud of all slices, and calculate the skewness of the disc suspension porcelain insulator body (1) based on the fitting results. The height adjustment installation mechanism (6) includes a movable mounting plate (8), a threaded column (14), and a height adjustment motor (15). The disc-shaped suspension porcelain insulator body (1) is mounted on the movable mounting plate (8). A vertical plate (9) is mounted on the top of the base (5). A guide slider (10) is fixed on the outer wall of the movable mounting plate (8), and a guide sliding hole (11) is opened vertically in the vertical plate (9). The guide slider (10) passes through the guide sliding hole (11) and can slide along the guide sliding hole (11). A movable seat (12) is fixed on the protruding end of the guide slider (10). A fixed plate (13) is fixed on the top of the outer side of the vertical plate (9). The threaded column (14) is mounted vertically on the fixed plate (13) and the base (8) using bearing support. Between 5), the threaded column (14) passes through the movable seat (12) and is connected to the movable seat (12) by thread engagement. A guide column (16) is also fixed between the fixed plate (13) and the base (5) and passes through the movable seat (12). The height adjustment motor (15) is installed on the fixed plate (13) to drive the threaded column (14) to rotate. The specific steps are as follows: According to the installation height of the disc-shaped suspension porcelain insulator body (1), the height adjustment motor (15) drives the threaded column (14) to rotate. Under the thread engagement, the threaded column (14) drives the movable seat (12) to move in the vertical direction. The movable seat (12) uses the guide slider (10) to drive the movable mounting plate (8) to move in the vertical direction, thereby realizing the adjustment of the height of the laser scanner (4). The rotating mounting mechanism (7) includes a rotary motor (17), a rotating disk (18), a telescopic column (19), a telescopic spring (20), a support plate (21), an arc-shaped clamping plate (22), a flipping connecting rod (24), and a suction cup (28). The rotary motor (17) is mounted on the top surface of the base (5). The rotating disk (18) is fixed on the output shaft of the rotary motor (17). The telescopic column (19) is mounted on the top surface of the rotating disk (18). The support plate (21) is fixed to the top of the telescopic column (19). The telescopic spring (20) is sleeved on the telescopic column (19) and located between the rotating disk (18) and the support plate (21). Multiple arc-shaped clamping plates are also included. The curved clamps (22) are evenly spaced along the circumference, and rubber pads (23) are bonded and fixed to the inner wall of the curved clamps (22). Multiple columns (27) are also fixed on the top surface of the rotating disk (18) and evenly spaced along the circumference. The suction cup (28) is fixed to the top of the column (27). The top of the flip connecting rod (24) is hinged to the curved clamps (22), and the bottom is hinged to the support plate (21). An operating rod (25) is also fixed on the curved clamps (22) and passes through the column (27). An operating disk (26) is fixed at the end of the operating rod (25) away from the curved clamps (22). The specific steps are as follows:

1. Pull the operating lever (25) outward. At this time, the operating lever (25) will cause the flip connecting rod (24) to flip outward, and the bottom end of the flip connecting rod (24) will press down on the support plate (21) so that the telescopic column (19) and the telescopic spring (20) will retract. 2: Place the iron cap (2) at the top or the steel foot (3) at the bottom of the disc-shaped suspension porcelain insulator body (1) between multiple arc-shaped clamps (22), and make the iron cap (2) or the steel foot (3) press against the support plate (21), and press down the disc-shaped suspension porcelain insulator body (1) appropriately until the suction cup (28) adheres to the outer wall of the support plate (21); Three: Release the operating lever (25). At this time, the telescopic spring (20) releases its elastic force, which pushes the support plate (21) to rise and reset. At the same time, the flip connecting rod (24) drives the arc-shaped clamp (22) to move inward, and the rubber pad (23) clamps the iron cap (2) or steel foot (3).

2. The method for testing disc-type suspension porcelain insulators according to claim 1, characterized in that: In step one, fixing the disc-shaped suspension porcelain insulator body (1) in the rotating mounting mechanism (7) includes two cases: placing the steel foot (3) at the bottom and placing the iron cap (2) at the bottom.

3. The method for testing disc-type suspension porcelain insulators according to claim 1, characterized in that: In step two, the three-dimensional point cloud images of the outer periphery of the disc-shaped suspension porcelain insulator body (1) include the three-dimensional point cloud images when the steel foot (3) is below and the three-dimensional point cloud images when the iron cap (2) is below.

Images