An unmanned aerial vehicle-based zero-value insulator live detection device and system

Abstract

This invention discloses a live-line detection device and system for zero-value insulators based on unmanned aerial vehicles (UAVs). The device includes an image acquisition unit and a calibration unit fixedly connected to it. The calibration unit includes a tail fin, a control unit, a power unit, an airflow pipe, and fan assemblies. The image acquisition unit is fixed to the airflow pipe, and multiple fan assemblies are evenly arranged along the circumference of the airflow pipe wall. A control unit is located at the rear end of the airflow pipe. One end of the control unit is connected to the power unit and the fan assemblies. The power unit is fixed to the airflow pipe wall, and the other end of the control unit is connected to the tail fin. The power unit provides kinetic energy to the fan assemblies through the control unit. When the tail fin and control unit are subjected to external force, the kinetic energy of the fan assemblies is adjusted by changing their positions, and the airflow generated by the kinetic energy of the fan assemblies achieves force balance with the external force. In this solution, the live-line detection device based on UAVs can achieve autonomous position recovery in the air, ensuring the stable and safe operation of thermal imaging for zero-value insulator detection.

Description

Technical Field

[0001] This invention relates to the field of high-voltage line testing, and in particular to a device and system for detecting live zero-value insulators based on unmanned aerial vehicles (UAVs). Background Technology

[0002] A zero-value insulator refers to an insulator disc in an insulator string where the potential difference between its two ends is zero during operation. The insulation resistance of each insulator disc in a standard insulator string should not be less than 300 MΩ, while for suspension insulators in a 500 kV voltage level, it should not be less than 500 MΩ. Insulators below these levels are generally considered low-value or zero-value insulators. If a zero-value insulator appears in a porcelain insulator string, the section containing the zero-value insulator is equivalent to a short circuit. The creepage distance in the short-circuited section becomes zero, thus reducing the overall creepage distance of the insulator string and ultimately increasing the probability of flashover. Once a flashover occurs in a porcelain insulator string, the steel cap of the zero-value insulator may crack or detach, causing the entire insulator string to become loose and eventually fall off, rendering the insulator unable to bear the tension of the power line.

[0003] In the existing technology, devices and methods for live-line detection of zero-value insulators based on drones are also a research hotspot. For example, patent CN106841957A discloses a device and method for live-line detection of zero-value insulators on transmission lines based on drones. The device includes a drone, a measurement and control system, a connecting boom, a main movable boom, an upper mechanical claw movable boom, an upper mechanical claw, a lower mechanical claw movable boom, a lower mechanical claw, an upper voltage measuring probe, and a lower voltage measuring probe. The upper and lower mechanical claws are controlled to firmly grasp the upper and lower steel caps of the insulator, respectively. The voltage signals of the upper and lower steel caps of the insulator are measured by the upper and lower voltage measuring probes installed at the roots of the upper and lower mechanical claws, and the voltage signals are transmitted to the measurement and control system. This invention enables the detection of zero-value insulators on transmission lines based on drones, significantly reducing the workload of line maintenance personnel, improving the efficiency of zero-value insulator detection on transmission lines, and reducing the safety risks of tower climbing for inspection.

[0004] For example, patent CN115047299A describes a UAV-based insulator testing device for power transmission lines, which includes a top plate. A connecting device is provided on the top of the top plate to connect the device to the support at the bottom of the UAV. A telescopic rod is provided at the bottom of the top plate, and a driving device is provided at the lower part of the telescopic rod. The driving device is connected to an insulator tester and is used to drive the insulator tester to rotate around the telescopic rod.

[0005] All of the above solutions can reduce the workload of line maintenance personnel, improve the efficiency of zero-value insulator detection, and eliminate the risks associated with personnel operations. However, no solutions have been proposed for issues such as the stability of the zero-value insulator detection device during control operations (e.g., the drone tilting and losing control due to external forces).

[0006] Therefore, how to design a drone-based zero-value insulator live-line testing device to solve problems such as drone tilting and loss of control during the testing process, and to ensure the safety of aerial insulator testing, is an urgent problem to be solved by those skilled in the art. Summary of the Invention

[0007] To address the shortcomings of existing technologies, this invention provides a UAV-based live-line detection device and system for zero-value insulators. The system includes an image acquisition device and a fixedly connected calibration device. The image acquisition device performs clear thermal imaging. The calibration device, through the inclusion of a tail fin, a central control unit, a power unit, an airflow pipe, and a fan assembly, converts the external force experienced by the zero-value insulator during live-line detection into the kinetic energy of the fan assembly. The airflow generated by this kinetic energy achieves mechanical balance with the external force. This UAV-based live-line detection device can autonomously recover its position in the air, ensuring stable and safe thermal imaging operation for zero-value insulator detection.

[0008] In a first aspect, the present invention provides a zero-value insulator live detection device based on a drone, comprising: an image acquisition device and a calibration device fixedly connected thereto, the calibration device comprising a tail fin, a control unit, a power unit, an airflow pipe and a fan assembly;

[0009] The image acquisition device is fixed on the airflow pipe. Multiple fan assemblies are evenly arranged around the circumference of the airflow pipe wall. A central control unit is provided at the rear end of the airflow pipe. One end of the central control unit is connected to the power component and the fan assembly. The power component is fixed on the pipe wall of the airflow pipe. The other end of the central control unit is connected to the tail fin.

[0010] The power unit provides kinetic energy to the fan assembly through the central control unit. When the tail fin and the central control unit are subjected to external forces, they adjust their positions to regulate the kinetic energy of the fan assembly. The airflow generated by the kinetic energy of the fan assembly achieves force balance with the external forces.

[0011] Furthermore, the tail fin component includes a ring plate, a lightweight rod, and lightweight plates. One end of the lightweight rod is fixedly connected to the ring plate, and the other end of the lightweight rod is fixedly fitted with multiple evenly distributed lightweight plates. One end of the ring plate is connected to the center control.

[0012] Furthermore, the control unit includes a return spring, a long plate, a control panel, a central shaft, a unit shaft, and a brake disc;

[0013] A return spring is provided on one side of the control panel. One end of the return spring is fixed to the control panel, and the other end of the return spring is fixedly connected to the tail fin. The control panel body is provided with multiple plate holes, and a long plate passes through each plate hole. One end of the long plate contacts the tail fin. The other side of the control panel is provided with multiple evenly distributed unit shafts, and the outer edge of the other side of the control panel is provided with multiple evenly distributed support plates. One end of the support plate is fixed to the airflow pipe.

[0014] One end of the unit shaft is connected to a brake disc, and a fan assembly is fixedly connected to one side of the brake disc. The other end of the unit shaft is connected to one end of the central shaft, and the other end of the central shaft is connected to the power component.

[0015] Furthermore, the unit shaft includes a control wheel, a control shaft, a sleeve, an internal gear cylinder, and a first connecting assembly. One end of the control shaft transmits power to the brake disc through multiple evenly distributed control wheels arranged in a ring. The other end of the control shaft is integrally connected to a shaft gear, and an internal gear cylinder is movably sleeved on the outside of the shaft gear. The internal gear cylinder and the central shaft are rotated and controlled.

[0016] An annular groove is provided at the waist of the control shaft, and a sleeve is movably fitted outside the annular groove. A long plate is fixedly connected to one side of the sleeve. The first connecting assembly connects the sleeve, the control panel and the long plate, and controls the axial movement of the control shaft by driving the sleeve.

[0017] Furthermore, the first connecting component includes a square frame, an L-shaped control rod, a compression spring, and a cross plate. One end of the cross plate is fixed to the control panel, and the other end of the cross plate has an internal toothed cylinder passing through it.

[0018] One end of the L-shaped steering rod is fixed to the control panel, and the other end is movably fitted into a through hole in the square plate frame. The square plate frame is fixed to the long plate, and a compression spring is fitted onto the L-shaped steering rod. The compression spring is internally supported between the L-shaped steering rod and the square plate frame.

[0019] Furthermore, the central shaft component includes a ring bevel gear, a disc bevel gear, and a control lever. One end of the control lever is fixedly connected to the disc bevel gear, and the other end of the control lever is connected to the power component.

[0020] The external reversing transmission of the disc bevel gear is connected to multiple evenly arranged annular bevel gears, and an internal gear cylinder is inserted through the annular bevel gears.

[0021] Furthermore, the control wheel is set in a groove opened at the end of the control shaft. The control wheel is a rubber disc, and the inner shaft is fixed in the middle of the rubber disc.

[0022] Both ends of the inner shaft of the control wheel extend into the circular plate grooves opened on the control shaft, and the rubber disc of the control wheel contacts the brake disc.

[0023] Furthermore, the airflow duct is cylindrical in shape, and the outer wall of the cylinder is provided with a through short tube corresponding to the number of fan assemblies. The fan assembly includes a second connecting component and fan blades. The fan blades are set inside the through short tube. One end of the second connecting component is fixedly connected to the brake disc, and the other end passes through the wall of the short tube and is connected to the fan blades. The second connecting component transmits the rotation of the brake disc to the rotation of the fan blades.

[0024] Furthermore, the second connecting component includes a short shaft, a control crossbar, a long shaft, and an L-shaped short plate. The short shaft and the L-shaped short plate are arranged inside the through short cylinder. One end of the L-shaped short plate is fixed to the inner wall of the through short cylinder, and the short shaft passes through the plate body at the other end of the L-shaped short plate.

[0025] One end of the short shaft is fixedly connected to a fan blade. The short shaft drives the long shaft in a different direction through a bevel gear. The outer wall of the airflow pipe is equipped with a control column corresponding to the number of fan components. The control column has a through hole for the long shaft to be movably sleeved. One end of the long shaft is connected to the control column in a transmission connection.

[0026] Secondly, the present invention also provides a zero-value insulator live-line detection system based on a drone, comprising: a drone, a long plate frame, and any of the above zero-value insulator live-line detection devices, wherein one end of the long plate frame is fixed on the drone, and the other end of the long plate frame is fixedly connected to any of the above zero-value insulator live-line detection devices.

[0027] The present invention provides a device and system for detecting live zero-value insulators based on unmanned aerial vehicles (UAVs), which has at least the following beneficial effects:

[0028] (1) In this scheme, the live-line detection equipment based on UAVs, the image acquisition device performs clear thermal imaging, and the calibration device can convert the external force on the zero-value insulator during live-line detection into airflow generated by kinetic energy, achieve mechanical balance with the external force, and can achieve autonomous position recovery in the air, ensuring the stable and safe operation of thermal imaging work for zero-value insulator detection.

[0029] (2) Strong airflow appears in the air from any direction. The airflow blows the tail fin, which in turn triggers the deformation of the control unit. Through transmission guidance, the corresponding fan speed increases, so the calibration component shifts in any direction. Then, a stronger airflow is ejected from the calibration component, which pushes the calibration component that has shifted in the air back to its original position, thus avoiding the expansion of safety issues.

[0030] (3) A series of ingenious control transmission parts are set in the control to achieve stable speed control of the long shaft. The airflow transmission causes the position of the lightweight rod to shift, and then the ring plate moves to support the long plate, which can trigger the stable deformation control of the control. Attached Figure Description

[0031] Figure 1 A structural diagram of a UAV-based zero-value insulator live-line detection system is provided for this invention;

[0032] Figure 2 A diagram showing the component location distribution of a drone-based zero-value insulator live-line detection device according to one embodiment of the present invention;

[0033] Figure 3A schematic diagram of the component structure of a drone-based zero-value insulator live-line detection device according to an embodiment of the present invention;

[0034] Figure 4 A schematic diagram of the fan assembly of a drone-based zero-value insulator live-line detection device according to an embodiment of the present invention;

[0035] Figure 5 A schematic diagram of the tail fin component of a drone-based zero-value insulator live-line detection device according to an embodiment of the present invention;

[0036] Figure 6 A schematic diagram of the control system of a drone-based zero-value insulator live-line detection device according to an embodiment of the present invention;

[0037] Figure 7 A schematic diagram of the control panel of a drone-based zero-value insulator live-line detection device according to an embodiment of the present invention;

[0038] Figure 8 A schematic diagram of a unit shaft component of a drone-based zero-value insulator live-line detection device according to an embodiment of the present invention;

[0039] Figure 9 A schematic diagram of the central shaft component of a drone-based zero-value insulator live-line detection device according to an embodiment of the present invention;

[0040] Figure 10 A partial schematic diagram of the contact between the control panel and the brake panel of a drone-based zero-value insulator live-line detection device according to an embodiment of the present invention;

[0041] Figure 11 A schematic diagram of a long plate frame for a drone-based zero-value insulator live-line detection device according to one embodiment of the present invention.

[0042] Figure label explanations: 1-UAV, 2-Long board frame, 3-Image acquisition device, 4-Calibration device, 5-Tail fin, 6-Center control unit, 7-Power component, 8-Airflow duct, 9-Fan assembly, 10-Hard wire, 11-Short shaft, 12-Control crossbar, 13-Long shaft, 14-L-shaped short board, 15-Fan blade, 16-Ring plate, 17-Lightweight rod, 18-Lightweight plate, 19-Return spring, 20- 21-Control panel, 22-Central shaft, 23-Unit shaft, 24-Support plate, 25-Brake disc, 26-Control wheel, 27-Control shaft, 28-Sleeve, 29-Square frame, 30-L-shaped directional control rod, 31-Compression spring, 32-Internal gear cylinder, 33-Horizontal plate, 34-Ring bevel gear, 35-Disc bevel gear, 36-Control rod, 37-Positioning seat, 38-Secondary control board, 39-Internal control board. Detailed Implementation

[0043] To better understand the above technical solutions, a detailed description of the solutions will be provided below in conjunction with the accompanying drawings and specific embodiments. Obviously, the described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0044] The terminology used in the embodiments of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. The singular forms “a,” “the,” and “the” as used in the embodiments of this invention and the appended claims are also intended to include the plural forms, and “multiple” generally includes at least two unless the context clearly indicates otherwise.

[0045] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that an article or device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such an article or device. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the article or device that includes said element.

[0046] This invention provides a live detection system for zero-value insulators based on unmanned aerial vehicles (UAVs), comprising: a UAV 1, a long plate frame 2, and a live detection device for zero-value insulators. One end of the long plate frame 2 is fixed on the UAV 1, and the other end of the long plate frame 2 is fixedly connected to the live detection device for zero-value insulators.

[0047] The present invention also provides a zero-value insulator live detection device based on UAV, including: an image acquisition device 3 and a calibration device 4 fixedly connected thereto. The calibration device 4 includes a tail fin 5, a control 6, a power component 7, an airflow pipe 8 and a fan assembly 9.

[0048] The image acquisition device 3 is fixed on the airflow pipe 8. Multiple fan assemblies 9 are evenly arranged around the circumference of the pipe wall of the airflow pipe 8. A central control unit 6 is provided at the rear end of the airflow pipe 8. One end of the central control unit 6 is connected to the power component 7 and the fan assembly 9. The power component 7 is fixed on the pipe wall of the airflow pipe 8. The other end of the central control unit 6 is connected to the tail fin component 5.

[0049] The power component 7 provides kinetic energy to the fan assembly 9 through the central control 6. After the tail wing component 5 and the central control 6 are subjected to external force, the kinetic energy of the fan assembly 9 is adjusted by adjusting their positions. The airflow generated by the kinetic energy of the fan assembly 9 achieves force balance with the external force.

[0050] like Figure 1-3 and Figure 11As shown, the zero-value insulator live-line detection device based on UAV includes a UAV 1, a long plate frame 2, and an image acquisition device 3 (in this embodiment, a camera capable of thermal imaging is selected). The long plate frame 2 is fixed on the UAV 1, and the image acquisition device 3 is fixedly connected to one end of the long plate frame 2. A calibration device 4 is set below the image acquisition device 3. The calibration device 4 includes a tail fin 5, a control 6, a power component 7 (in this embodiment, a servo motor is selected), an airflow pipe 8, and a fan assembly 9. Multiple evenly distributed fan assemblies 9 are arranged around the airflow pipe 8 (the number of fan assemblies is not limited; in this embodiment, the number of fan assemblies 9 is 3).

[0051] The fixed connection between the airflow pipe 8 and the image acquisition device 3 can be made by using two symmetrically distributed sub-control boards 38. One end of the airflow pipe 8 is provided with a central control board 6, and one end of the central control board 6 is connected to a power component 7. The power component 7 is fixed inside the airflow pipe 8. The other end of the central control board 6 is connected to a tail fin component 5. The central control board 6 and the fan assembly 9 are connected by a transmission.

[0052] A rigid wire 10 is installed on the long board frame 2. The rigid wire 10 connects the drone 1 and the image acquisition device 3. The drone 1 provides power to the image acquisition device 3. A wire is connected between the image acquisition device 3 and the power component 7. While the image acquisition device 3 is working, it provides power to the power component 7. When the image acquisition device 3 is performing thermal imaging, the power component 7 continuously drives the control 6.

[0053] The control 6 connected to the tail fin 5 can adjust its own position, and after adjustment, it can transmit the corresponding force to the fan assembly 9 through gear transmission and other means. The fan assembly 9 generates wind power, and the airflow generated by the wind power can achieve force balance with the external force on the tail fin 5.

[0054] The tail fin 5 transmits the external force it receives to the central control 6. The central control 6 adjusts its position to transfer the force into the kinetic energy of the fan assembly 9. The airflow generated by the kinetic energy of the fan assembly 9 achieves force balance with the external force.

[0055] In actual insulator testing, the external force on the tail fin 5 is mainly the wind blowing from the control unit. When a strong airflow appears from any direction in the air, the airflow blows the tail fin 5, which in turn triggers the deformation of the control unit 6. Through transmission and guidance, the corresponding fan assembly 9 rotates faster, causing the calibration device 4 to shift in any direction. Then, a stronger airflow is ejected from the calibration device 4, pushing the shifted calibration device 4 back to its original position, thus preventing the escalation of safety issues.

[0056] This invention provides a live-line detection device and system for zero-value insulators based on unmanned aerial vehicles (UAVs), including an image acquisition device 3 and a calibration device 4 fixedly connected thereto. The image acquisition device 3 performs clear thermal imaging. The calibration device 4, by setting up a tail fin 5, a central control 6, a power component 7, an airflow pipe 8, and a fan assembly 9, converts the external force on the zero-value insulator during live-line detection into the kinetic energy of the fan assembly, and the airflow generated by the kinetic energy achieves mechanical balance with the external force.

[0057] The solution utilizes drone-based live-line testing equipment, which can autonomously recover its position in the air, ensuring the stable and safe operation of thermal imaging for zero-value insulator testing.

[0058] like Figure 5 As shown, in one embodiment, the tail fin 5 includes a ring plate 16, a lightweight rod 17, and a lightweight plate 18. One end of the lightweight rod 17 is fixedly connected to the ring plate 16, and the other end of the lightweight rod 17 is fixedly ringed with a plurality of evenly distributed lightweight plates 18 (the number of lightweight plates is not limited, but in this embodiment the number of lightweight plates can be 3). One end of the ring plate 16 is connected to the central control 6.

[0059] like Figure 6-7 As shown, in one embodiment, the control panel 6 includes a return spring 19, a long plate 20, a control disk 21, a central shaft 22, unit shafts 23, a support plate 24, and a brake disk 25. The control disk 21 is disc-shaped, and a protruding post is integrally connected to the middle of one side of the control disk 21. A return spring 19 is provided on one side of the control disk 21. One end of the return spring 19 is fixed to the protruding post of the control disk 21, and the other end of the return spring 19 is fixedly connected to a lightweight rod 17. The control disk 21 has multiple plate holes (the number of plate holes is not limited, but in this embodiment there are 3 plate holes), and a long plate 20 passes through each plate hole. One end of the long plate 20 contacts a ring plate 16. The other side of the control disk 21 has multiple evenly distributed unit shafts 23 (the number of unit shafts is not limited, but in this embodiment there are 3 unit shafts).

[0060] One end of the unit shaft 23 is connected to a brake disc 25, and a long shaft 13 is fixedly connected to one side of the brake disc 25. The other end of the unit shaft 23 is connected to a central shaft 22. One end of the central shaft 22 is connected to the power component 7. The power component 7 is fixedly connected to the airflow pipe 8 by setting an internal control plate 39. The outer edge of the control disc 21 is provided with a fixing ring with multiple evenly distributed support plates 24 (the number of support plates is not limited, but in this embodiment, the number of support plates is 3). One end of the support plate 24 is fixed on the airflow pipe 8.

[0061] The central control 6 is equipped with a series of ingenious control and transmission components to achieve stable speed control of the long shaft 13. The airflow transmission causes the position of the lightweight rod 17 to shift, which in turn moves the ring plate 16 to support the long plate 20, thus triggering stable deformation control of the central control 6.

[0062] like Figure 8 As shown, in one embodiment, the unit shaft 23 includes a control wheel 26, a control shaft 27, a sleeve 28, an internal gear cylinder 32, and a first connecting assembly. One end of the control shaft 27 transmits power to the brake disc 25 through a plurality of evenly distributed control wheels 26 arranged in a ring. The other end of the control shaft 27 is integrally connected to a shaft gear, and the shaft gear is movably sleeved with an internal gear cylinder 32. The internal gear cylinder 32 and the central shaft 22 are rotated and controlled.

[0063] An annular groove is provided at the waist of the control shaft 27, and a sleeve 28 is movably fitted outside the annular groove. A long plate 20 is fixedly connected to one side of the sleeve 28. The first connecting assembly connects the sleeve 28, the control disk 21 and the long plate 20, and controls the axial movement of the control shaft 27 by driving the sleeve 28.

[0064] The first connecting component includes a square frame 29, an L-shaped control rod 30, a compression spring 31 and a horizontal plate 33. One end of the horizontal plate 33 is fixed to the control panel 21, and the other end of the horizontal plate 33 is penetrated by an internal toothed cylinder 32.

[0065] One end of the L-shaped steering lever 30 is fixed to the control panel 21, and the other end is movably sleeved in the through hole opened in the square plate frame 29. The square plate frame 29 is fixed to the long plate 20. The compression spring 31 is sleeved on the L-shaped steering lever 30, and the compression spring 31 is internally supported between the L-shaped steering lever 30 and the square plate frame 29.

[0066] like Figure 9 As shown, in one embodiment, the central shaft 22 includes an annular bevel gear 34, a disc bevel gear 35, and a control lever 36. One end of the control lever 36 is fixedly connected to the disc bevel gear 35, and the other end of the control lever 36 is connected to the power component 7.

[0067] The external reversing transmission of the disc bevel gear 35 is connected to three evenly arranged annular bevel gears 34, and an internal gear cylinder 32 passes through the annular bevel gears 34.

[0068] The power component 7 is a servo motor. One end of the control lever 36 is connected to the servo motor shaft. The horizontal plate 33 positions the internal gear cylinder 32. One end of the internal gear cylinder 32 is fixedly fitted with a ring bevel gear 34. In this way, the ring bevel gear 34 and the disc bevel gear 35 remain in the same position on one side of the control disk 21 and are stably meshed.

[0069] like Figure 10As shown, in one embodiment, the control wheel 26 is shaped like a rubber disc, and the inner shaft is fixed in the middle of the rubber disc. The control wheel 26 is disposed in a groove opened at the end of the control shaft 27.

[0070] Both ends of the inner shaft of the control wheel 26 extend into the circular plate grooves opened on the control shaft 27, and the rubber disc of the control wheel 26 contacts the brake disc 25.

[0071] like Figure 4 As shown, in one embodiment, the airflow pipe 8 is cylindrical, and the outer wall of the cylinder is provided with a through short tube corresponding to the number of fan assemblies 9. The fan assembly 9 includes a second connecting component and a fan blade 15. The fan blade 15 is disposed inside the through short tube. One end of the second connecting component is fixedly connected to the brake disc 25, and the other end passes through the wall of the short tube and is connected to the fan blade 15. The second connecting component transmits the rotation of the brake disc 25 to the rotation of the fan blade 15.

[0072] The second connecting component includes a short shaft 11, a control crossbar 12, a long shaft 13, and an L-shaped short plate 14. The short shaft 11 and the L-shaped short plate 14 are arranged inside the through short cylinder. One end of the L-shaped short plate 14 is fixed to the inner wall of the through short cylinder, and the other end of the L-shaped short plate 14 has the short shaft 11 passing through it.

[0073] One end of the short shaft 11 is fixedly connected to a fan blade 15. The short shaft 11 is driven to change direction by a bevel gear. The outer wall of the airflow pipe 8 is provided with a control column 12 corresponding to the number of fan assemblies 9. The control column 12 has a through hole for the long shaft 13 to be movably sleeved. One end of the long shaft 13 is connected to the control column 6.

[0074] The present invention provides a live-line detection device and system for UAVs. The image acquisition device performs clear thermal imaging, and the calibration device can convert the external force on the zero-value insulator during live-line detection into kinetic energy-generated airflow, achieving mechanical balance with the external force. It can achieve autonomous position recovery in the air, ensuring the stable and safe operation of thermal imaging for zero-value insulator detection.

[0075] Specifically, during the live-line testing of insulators, the drone 1 hovers above one side of the insulator, and the calibration device 4 is extended as close to the insulator as possible. This allows the image acquisition device 3 to take clear pictures. If strong winds occur during the shooting process, and the distance between the drone 1 and the image acquisition device 3 is too large, the control over the image acquisition device 3 will be insufficient. In this case, the calibration device 4 needs to provide aerial auxiliary positioning for the image acquisition device 3. Specifically, the calibration device 4 has the function of moving towards the wind, preventing the image acquisition device 3 from deviating from its designated position due to the wind.

[0076] The adjustment principle and process of calibration device 4 will be explained below using the example of wind blowing upwards towards the lightweight plate.

[0077] Wind blows upwards through three lightweight plates 18. A return spring 19 elastically controls a lightweight rod 17, causing it to shift upwards and move a ring plate 16. The ring plate 16 supports a long plate 20 above it. The movement of the long plate 20 moves a sleeve 28, which in turn controls the axial movement of the control shaft 27. One end of the control shaft 27 gradually approaches the center of the brake disc 25. During this process, a control rod 36 continuously rotates, controlling an internal gear cylinder 32. The internal gear cylinder 32 drives the control shaft 27, which in turn drives control wheels 26 in a circular motion. The circular motion of these control wheels 26 drives the brake disc 25. As the brake disc 25 continues to rotate, the direct position of the brake disc 25 and the control wheel 26 gradually approaches the center of the brake disc 25. This causes the rotating brake disc 25 to accelerate, driving the long shaft 13. The long shaft 13 then rotates at an increased speed, which in turn drives the short shaft 11, thereby controlling the speed of the fan blades 15. As the speed of the fan blades 15 increases, a strong airflow is ejected upward from the airflow pipe 8. This airflow reaction causes the calibration device 4 to tend to descend, counteracting the upward blowing from the outside. This allows the calibration device 4 to achieve force balance, thus keeping the image acquisition device 3 stationary in the air.

[0078] Although preferred embodiments of the invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including both the preferred embodiments and all changes and modifications falling within the scope of the invention. Clearly, those skilled in the art can make various alterations and modifications to the invention without departing from its spirit and scope. Thus, if these modifications and modifications of the invention fall within the scope of the claims and their equivalents, the invention is also intended to include these modifications and modifications.

Claims

1. A live-line detection device for zero-value insulators based on unmanned aerial vehicles (UAVs), characterized in that, include: Image acquisition device (3) and calibration device (4) fixedly connected thereto, the calibration device (4) includes tail fin (5), central control unit (6), power unit (7), airflow pipe (8) and fan assembly (9); The image acquisition device (3) is fixed on the airflow pipe (8). Multiple fan assemblies (9) are evenly arranged along the circumference of the pipe wall of the airflow pipe (8). A central control unit (6) is provided at the rear end of the airflow pipe (8). One end of the central control unit (6) is connected to the power component (7) and the fan assembly (9). The power component (7) is fixed on the pipe wall of the airflow pipe (8). The other end of the central control unit (6) is connected to the tail fin component (5). The central control unit (6) includes a return spring (19), a long plate (20), a control panel (21), a central shaft (22), a unit shaft (23), and a brake disc (25); A reset spring (19) is provided on one side of the control panel (21). One end of the reset spring (19) is fixed on the control panel (21), and the other end of the reset spring (19) is fixedly connected to the tail fin (5). The control panel (21) has multiple plate holes on its body, and each plate hole has a long plate (20) passing through it. One end of the long plate (20) contacts the tail fin (5). The other side of the control panel (21) has multiple evenly distributed unit shafts (23), and the outer edge of the control panel (21) is fixed with multiple evenly distributed support plates (24). One end of the support plate (24) is fixed on the airflow pipe (8). One end of the unit shaft (23) is connected to the brake disc (25), one side of the brake disc (25) is fixedly connected to the fan assembly (9), and the other end of the unit shaft (23) is connected to one end of the central shaft (22), and the other end of the central shaft (22) is connected to the power component (7). The power component (7) provides kinetic energy to the fan assembly (9) through the central control (6). After the tail wing component (5) and the central control (6) are subjected to external force, the kinetic energy of the fan assembly (9) is adjusted by position adjustment. The airflow generated by the kinetic energy of the fan assembly (9) and the external force are balanced.

2. The zero-value insulator live-line detection device as described in claim 1, characterized in that, The tail wing component (5) includes a ring plate (16), a lightweight rod (17) and a lightweight plate (18). One end of the lightweight rod (17) is fixedly connected to the ring plate (16), and the other end of the lightweight rod (17) is fixedly surrounded by multiple evenly distributed lightweight plates (18). One end of the ring plate (16) is connected to the central control unit (6).

3. The zero-value insulator charging detection apparatus of claim 1, wherein, The unit shaft (23) includes a control wheel (26), a control shaft (27), a sleeve (28), an internal gear cylinder (32), and a first connecting assembly. One end of the control shaft (27) transmits power to the brake disc (25) through multiple evenly distributed control wheels (26) arranged in a ring. The other end of the control shaft (27) is integrally connected to the shaft gear, and the shaft gear is movably sleeved with an internal gear cylinder (32). The internal gear cylinder (32) and the central shaft (22) perform rotational transmission control. An annular groove is provided at the waist of the control shaft (27), and a sleeve (28) is movably fitted outside the annular groove. A long plate (20) is fixedly connected to one side of the sleeve (28). The first connecting assembly connects the sleeve (28), the control disk (21), and the long plate (20), and controls the axial movement of the control shaft (27) by driving the sleeve (28).

4. The zero-value insulator charging detection apparatus of claim 3, wherein, The first connecting component includes a square frame (29), an L-shaped control rod (30), a compression spring (31) and a horizontal plate (33). One end of the horizontal plate (33) is fixed to the control panel (21), and the other end of the horizontal plate (33) is penetrated by an internal toothed cylinder (32). One end of the L-shaped steering rod (30) is fixed on the control panel (21), and the other end is movably sleeved in the through hole opened on the square plate frame (29). The square plate frame (29) is fixed on the long plate (20), and the compression spring (31) is sleeved on the L-shaped steering rod (30). The compression spring (31) is internally supported between the L-shaped steering rod (30) and the square plate frame (29).

5. The zero-value insulator charging detection apparatus of claim 3, wherein, The central shaft component (22) includes a ring bevel gear (34), a disc bevel gear (35) and a control lever (36). One end of the control lever (36) is fixedly connected to the disc bevel gear (35), and the other end of the control lever (36) is connected to the power component (7). The disc bevel gear (35) is externally connected to multiple evenly arranged ring bevel gears (34), and an internal gear cylinder (32) is provided through the ring bevel gears (34).

6. The zero-value insulator charging detection apparatus of any one of claims 3-5, wherein, The control wheel (26) is set in the plate groove opened at the end of the control shaft (27). The control wheel (26) is a rubber disc, and the inner shaft is fixed in the middle of the rubber disc. Both ends of the inner shaft of the control wheel (26) extend into the circular plate groove opened on the control shaft (27), and the rubber disc of the control wheel (26) contacts the brake disc (25).

7. The zero-value insulator charging detection apparatus of claim 1, wherein, The airflow pipe (8) is cylindrical, and the outer wall of the cylinder is provided with a through short tube corresponding to the number of fan assemblies (9). The fan assembly (9) includes a second connecting component and a fan blade (15). The fan blade (15) is set inside the through short tube. One end of the second connecting component is fixedly connected to the brake disc (25), and the other end passes through the wall of the short tube and is connected to the fan blade (15). The second connecting component transmits the rotation of the brake disc (25) to the rotation of the fan blade (15).

8. The zero-value insulator charging detection apparatus of claim 7, wherein, The second connecting assembly includes a short shaft (11), a control column (12), a long shaft (13), and an L-shaped short plate (14). The short shaft (11) and the L-shaped short plate (14) are arranged inside the through short cylinder. One end of the L-shaped short plate (14) is fixed to the inner wall of the through short cylinder, and the short shaft (11) passes through the plate body at the other end of the L-shaped short plate (14). One end of the short shaft (11) is fixedly connected to a fan blade (15). The short shaft (11) is driven to change direction by a bevel gear. The outer wall of the airflow pipe (8) is provided with a control column (12) corresponding to the number of fan assemblies (9). The control column (12) has a through hole for the long shaft (13) to be movably sleeved. One end of the long shaft (13) is connected to the control column (6) for transmission.

9. An unmanned aerial vehicle (UAV) based live detection system for zero value insulators, comprising: include: The device comprises a drone (1), a long plate frame (2), and a zero-value insulator live-line detection device as described in any one of claims 1-8. One end of the long plate frame (2) is fixed on the drone (1), and the other end of the long plate frame (2) is fixedly connected to the zero-value insulator live-line detection device as described in any one of claims 1-8.

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