A device for detecting an insulation resistance

Abstract

The utility model provides an insulating resistance detection device, including unmanned plane, camera is installed on unmanned plane, unmanned plane flight control system is connected with remote controller wireless, electric gripper is installed on unmanned plane, and each finger is fixedly connected with insulating block on opposite surface in electric gripper, and electrode piece is installed on insulating block, and electrode piece is connected with insulating resistance meter through cable, the utility model discloses be used to solve the problem of long time of existing high -place circuit line measurement and the risk of personnel falling from high place.

Description

Technical Field

[0001] This utility model relates to an insulation resistance testing device. Background Technology

[0002] Insulation resistance testing is a crucial step in ensuring the safe operation of electrical circuits at heights. Its core function is to monitor the resistance of the insulation layer, promptly detecting insulation aging, damage, or potential leakage hazards, thus preventing circuit failures caused by insulation instability. Currently, insulation resistance testing for electrical circuits at heights generally relies on traditional manual methods. The specific procedures and existing problems are as follows: In the current testing process, operators must carry an insulation resistance meter and its connecting components, climb to the high position of the line using pole climbing tools, and then manually connect the meter clips to the line conductors. This method faces significant safety risks firstly—the lack of a stable protective platform for working at heights means operators rely solely on rudimentary safety equipment for protection, making them highly susceptible to falls if tools slip or they lose their balance. Furthermore, the testing equipment may slip during the climb, causing secondary injuries to personnel on the ground or surrounding equipment. Secondly, this method is inefficient. Operators must travel back and forth between the ground and the high position, consuming considerable physical strength to move equipment and perform delicate manual connection operations at height, making the entire testing process time-consuming. If multiple sections of the line or multiple testing points need to be measured, the steps of climbing, disconnecting, and descending the pole must be repeated, further extending the overall testing cycle and failing to meet the needs of efficient circuit maintenance. In addition, manual high-altitude operations also pose risks of insufficient measurement stability and line damage. In high-altitude environments, operators face difficulties in precisely controlling the contact force between the meter clip and the wiring: too loose a contact can lead to unstable measurement signals, affecting data accuracy; too tight a contact may squeeze the wiring insulation or conductor, causing damage to the wiring and creating new safety hazards; at the same time, accidental collisions between the equipment and the wiring during climbing may also damage the wiring structure.

[0003] In summary, existing methods for detecting insulation resistance of high-altitude circuits suffer from high safety risks, low operational efficiency, poor measurement stability, and easy damage to the circuits. There is an urgent need for a detection device that eliminates the need for personnel to work at heights and has a higher degree of automation. Utility Model Content

[0004] The purpose of this invention is to provide an insulation resistance testing device to solve the problem that when testing the insulation resistance of existing high-altitude circuits, electrical operators need to climb to a high place to connect the insulation resistance meter clamp. This operation not only requires personnel to carry the equipment up and down the pole, but also takes a long time and poses a safety risk of personnel falling from a height.

[0005] To solve the above problems, the technical solution of this utility model is as follows: An insulation resistance testing device includes a drone, a camera mounted on the drone, a drone flight control system wirelessly connected to a remote controller, an electric gripper mounted on the drone, an insulating block fixedly connected to the opposite surface of each finger of the electric gripper, and an arc-shaped electrode plate mounted on the insulating block. The arc-shaped electrode plate is connected to an insulation resistance meter via a cable.

[0006] Furthermore, a buffer mechanism is provided between the electric gripper and the drone. The buffer mechanism includes a sleeve, a pin, a spring, and a load cell. A top cover is fixed to the upper end of the sleeve and is fixedly connected to the electric gripper. A flange extending inward is provided at the lower end of the sleeve. A limiting plate is provided inside the sleeve, and the load cell is connected to the limiting plate. The spring is located inside the sleeve, with its two ends abutting against the load cell and the top cover, respectively. The upper end of the pin passes through the flange and is fixedly connected to the limiting plate. The lower end of the pin is fixedly connected to the drone. The load cell is connected to the flight control system.

[0007] Furthermore, the drone is an umbilical drone, and the cable is a multi-core cable. The umbilical drone is connected to the battery through the multi-core cable.

[0008] Furthermore, it also includes a cable reel, on which multi-core cables are wound.

[0009] Furthermore, it also includes an electric tricycle, on which the battery, cable reel, drone, and insulation resistance meter are all placed.

[0010] Furthermore, the electric gripper is a lead screw electric gripper.

[0011] Furthermore, the insulating block is a bakelite block, and an arc-shaped notch is formed on the bakelite block, with the arc-shaped electrode sheet fixedly connected inside the arc-shaped notch.

[0012] The beneficial effects of this utility model are as follows: 1. This device utilizes a drone as a mobile platform to transport testing components such as the electric gripper and curved electrode plates to the high-altitude location on the circuit. Operators control the equipment from the ground via remote control, eliminating the need to climb to heights and fundamentally reducing the risk of falls. Simultaneously, ground operation prevents the testing equipment from slipping from heights, further ensuring the safety of the surrounding environment and personnel. Furthermore, the insulating block on the electric gripper effectively isolates the curved electrode plates from the gripper and the drone itself, preventing current from being conducted to the ground through the device, ensuring electrical safety and complying with safe operating procedures for circuit testing.

[0013] 2. Compared to traditional manual pole-climbing operations, this device significantly optimizes the inspection process through multi-structure collaboration: the drone can quickly reach different inspection points, eliminating the need for manual transport of equipment; the camera transmits real-time aerial images, assisting operators in precisely adjusting the electric gripper's posture and avoiding repeated manual high-altitude alignment adjustments; the electric gripper can automatically connect and disconnect the curved electrode plates from the lines without manual operation, greatly reducing the time spent on single-point inspection. When paired with an umbilical drone and cable reel, continuous inspection of multiple line segments can be achieved, avoiding the waiting time associated with frequent battery replacements of ordinary drones, further improving overall inspection efficiency and making it suitable for large-scale line maintenance scenarios.

[0014] 3. The structural design of the device fully considers the requirements of measurement stability and line protection: the buffer mechanism (if configured) can absorb the impact force when the UAV flies or the gripper contacts the line, avoiding damage to the line from rigid collisions. In addition, the arc-shaped electrode plate and the arc-shaped notch of the insulating block are adapted to the shape of the line, which can increase the contact area between the arc-shaped electrode plate and the line, reduce measurement errors caused by poor contact, and improve data accuracy. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings: Figure 1 This is a three-dimensional structural diagram of the present invention. Figure 2 This is the front view of the present invention. Figure 3 This is a front view schematic diagram of the gripper and buffer mechanism of this utility model. Figure 4 This is a schematic diagram showing the connection relationship of the various components of this utility model.

[0016] In the diagram: 1. Camera; 2. Electric gripper; 3. Insulation resistance meter; 4. Electric tricycle; 5. Cable reel; 6. Drone; 7. Circuit line; 8. Arc electrode plate; 9. Insulating block; 10. Sleeve; 11. Pin tube; 12. Weighing sensor; 13. Spring; 14. Top cover; 15. Remote control; 16. Battery; 17. Cable. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] like Figures 1 to 4As shown, an insulation resistance testing device includes a drone 6, a camera 1 mounted on the drone 6, a flight control system of the drone 6 wirelessly connected to a remote controller 15, an electric gripper 2 mounted on the drone 6, an insulating block 9 fixedly connected to the opposite surface of each finger in the electric gripper 2, the electric gripper 2 being connected to the flight control system of the drone 6, an arc-shaped electrode 8 mounted on the insulating block 9, the arc-shaped electrode 8 being connected to an insulation resistance meter 3 via a cable 17, and the camera 1 shooting direction facing the gripper.

[0019] In use, the operator sends commands to the drone 6 flight control system via remote controller 15, controlling the drone 6 to fly to the measurement position of the power line at a high altitude. Camera 1 transmits images in real time, assisting the operator in accurately locating the line. Remote controller 15 controls the electric gripper 2 to close, ensuring that the arc-shaped electrode 8 on the insulating block 9 makes tight contact with the power line. The arc-shaped electrode 8 transmits the insulation resistance signal of the line to the insulation resistance meter 3 via cable 17. The operator can directly read the measurement data on the ground without climbing the power pole. This completely replaces the traditional operation of "personnel climbing to a high place to connect the meter clamps," fundamentally solving the safety hazard of personnel falling from heights.

[0020] Furthermore, a buffer mechanism is provided between the electric gripper 2 and the drone 6. The buffer mechanism includes a sleeve 10, a pin 11, a spring 13, and a load cell 12. A top cover 14 is fixed to the upper end of the sleeve 10 and is fixedly connected to the electric gripper 2. A flange extending inward is provided at the lower end of the sleeve 10. A limiting plate is provided inside the sleeve 10, and the load cell 12 is connected to the limiting plate. The spring 13 is located inside the sleeve 10, and its two ends abut against the load cell 12 and the top cover 14, respectively. The upper end of the pin 11 passes through the flange and is fixedly connected to the limiting plate. The lower end of the pin 11 is fixedly connected to the drone 6. The load cell 12 is connected to the flight control system. When the electric gripper 2 contacts the line or the drone 6 is vibrated by airflow, the sleeve 10 will slide up and down relative to the pin tube 11. The spring 13 absorbs the impact force through compression / tension to avoid rigid collision. The force of the spring 13 is transmitted to the weighing sensor 12. The sensor converts the pressure signal into an electrical signal and transmits it to the flight control system. The operator can check the lifting pressure value of the drone 6 in real time through the remote controller 15. When the lifting pressure value exceeds the threshold (e.g., 0.5 kg), the drone 6 stops rising to prevent it from tipping over.

[0021] Furthermore, the drone 6 is an umbilical drone 6, and the cable 17 is a multi-core cable 17. The umbilical drone 6 is connected to the battery 16 via the multi-core cable 17. The umbilical drone 6 does not rely on its own battery, but obtains continuous power from the battery 16 on the ground through the multi-core cable 17 to meet the needs of long-term flight. The different cores of the multi-core cable 17 respectively undertake functions such as "power supply of drone 6", "transmission of measurement signals from arc electrode plate 8 to insulation resistance meter 3", "image transmission from camera 1", and "transmission of flight control commands", realizing "multi-purpose use of one line". Compared with ordinary drones 6, which are limited by battery capacity and usually only have a flight time of 15-30 minutes, this umbilical power supply can achieve several hours of continuous operation, which is suitable for multiple measurements and complex circuits (such as continuous detection of multiple circuit segments).

[0022] Furthermore, it also includes a cable reel 5, on which the multi-core cable 17 is wound. When the drone 6 ascends, the cable reel 5 automatically (or manually) releases the multi-core cable 17 to prevent the cable 17 from pulling on the drone 6; when the drone 6 descends, the cable reel 5 retracts the cable 17 to prevent it from hanging down due to excessive length. This allows the cable reel 5 to wind the cable 17 in an orderly manner, preventing the cable 17 from getting tangled in trees, other power lines, or ground obstacles during flight, reducing the risk of wear or breakage of the cable 17.

[0023] Furthermore, the system also includes an electric tricycle 4, on which the battery 16, cable reel 5, drone 6, and insulation resistance meter 3 are all mounted. Operators drive the electric tricycle 4 to transport the entire system to different measurement locations (such as different overhead lines or different measurement areas), eliminating the need for manual handling of the battery 16 (typically weighing tens of kilograms), cable reel 5, and other equipment.

[0024] Furthermore, the electric gripper 2 is a lead screw electric gripper 2. The lead screw electric gripper 2 is driven by a motor to rotate the lead screw, which drives the nut (connected to the gripper fingers) to move linearly, realizing the smooth opening and closing of the fingers. At the same time, the gripper also has a self-locking function. After the gripper grips the cable 17, even if the drone 6 stops due to damage to the inductive current, the drone 6 will not fall off the cable.

[0025] Furthermore, the insulating block 9 is a bakelite block with an arc-shaped notch, and the arc-shaped electrode plate 8 is fixedly connected within the arc-shaped notch. The bakelite block completely isolates the arc-shaped electrode plate 8 from the electric gripper 2, avoiding the risk of leakage. The shape of the arc-shaped notch and the arc-shaped electrode plate 8 matches the circuit, which can increase the contact area between the arc-shaped electrode plate 8 and the circuit and reduce the contact resistance.

[0026] The embodiments described in this specification are merely examples of implementations of the inventive concept. The scope of protection of this utility model should not be considered as limited to the specific forms described in the embodiments. The scope of protection of this utility model also extends to equivalent technical means that can be conceived by those skilled in the art based on the inventive concept.

Claims

1. An insulation resistance detection device, comprising a drone (6), wherein a camera (1) is mounted on the drone (6), and the drone (6) flight control system is wirelessly connected to a remote controller (15), characterized in that: An electric gripper (2) is installed on the drone (6). An insulating block (9) is fixedly connected to the opposite surface of each finger in the electric gripper (2). An arc-shaped electrode plate (8) is installed on the insulating block (9). The arc-shaped electrode plate (8) is connected to the insulation resistance meter (3) through a cable (17).

2. The insulation resistance detection device according to claim 1, characterized in that: A buffer mechanism is provided between the electric gripper (2) and the drone (6). The buffer mechanism includes a sleeve (10), a pin (11), a spring (13), and a load cell (12). A top cover (14) is fixed at the upper end of the sleeve (10). The top cover (14) is fixedly connected to the electric gripper (2). A flange extending inward is provided at the lower end of the sleeve (10). A limiting plate is provided inside the sleeve (10). The load cell (12) is connected to the limiting plate. The spring (13) is set inside the sleeve (10). The two ends of the spring (13) abut against the load cell (12) and the top cover (14) respectively. The upper end of the pin (11) passes through the flange and is fixedly connected to the limiting plate. The lower end of the pin (11) is fixedly connected to the drone (6). The load cell (12) is connected to the flight control system.

3. The insulation resistance detection device according to claim 1, characterized in that: The drone (6) is an umbilical drone (6), and the cable (17) is a multi-core cable (17). The umbilical drone (6) is connected to the battery (16) through the multi-core cable (17).

4. The insulation resistance detection device according to claim 3, characterized in that: It also includes a reel (5) on which a multi-core cable (17) is wound.

5. The insulation resistance detection device according to claim 3, characterized in that: It also includes an electric tricycle (4), a battery (16), a cable reel (5), a drone (6), and an insulation resistance meter (3), all of which are placed on the electric tricycle (4).

6. An insulation resistance testing device according to any one of claims 1 to 5, characterized in that: The electric gripper (2) is a lead screw electric gripper (2).

7. An insulation resistance testing device according to any one of claims 1 to 5, characterized in that: The insulating block (9) is a bakelite block with an arc-shaped notch. The arc-shaped electrode plate (8) is fixedly connected in the arc-shaped notch.

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