High-precision flight hovering unmanned aerial vehicle-mounted current detection system

Abstract

The application relates to the technical field of cable aerial detection devices, in particular to a high-precision flying hovering unmanned aerial vehicle-mounted current detection device. The device comprises an unmanned aerial vehicle, a suspension rack mounted below the unmanned aerial vehicle, a transmission assembly arranged on one side of the suspension rack, two folding arms symmetrically arranged on the transmission assembly, and the transmission assembly driving the folding arms to perform horizontal shifting, rotation or folding actions. The device can meet the detection requirements of cables at different heights by being mounted on the unmanned aerial vehicle, can be connected with the cables for operation in a hovering state by using the transmission assembly and the folding arms, can reduce the operation difficulty, can complete the synchronous detection of two cables at one time in the case of detecting multiple cables, can effectively improve the detection efficiency, and the balance assembly can assist in keeping the overall balance, further reduces the difficulty of the connection operation and improves the overall stability.

Description

Technical Field

[0001] This invention relates to the field of aerial cable testing devices, and in particular to a high-precision current detection device for hovering unmanned aerial vehicles. Background Technology

[0002] In cable power transmission, maintenance personnel need to regularly test the cable current in various areas to assess the cable's operating status in order to ensure the normal operation of the power grid. In traditional assessment operations, for low-altitude cables, the testing is often carried out by workers climbing poles or power supports with clamp meters. However, for high-altitude cables, due to the greater height of the cables, there is no good solution. Relying solely on manual climbing is labor-intensive, difficult, and carries certain operational risks, such as electric shock and falls, which threaten the life and health of maintenance personnel. At the same time, the traditional testing mode is relatively inefficient and cannot meet the actual testing needs. Summary of the Invention

[0003] The technical problem to be solved by this invention is to address the aforementioned technical deficiencies by providing a high-precision hovering drone-mounted current detection device. By being mounted on the drone, it can meet the detection requirements of cables at different altitudes. At the same time, by using a transmission component in conjunction with a folding arm, it can perform docking operations with cables in a hovering state, reducing the difficulty of operation. Furthermore, for the detection of multiple cables, it can complete the simultaneous detection of two cables at once, effectively improving detection efficiency. The balancing component can help maintain the overall balance, further reducing the difficulty of docking operations and improving overall stability.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by the present invention includes:

[0005] The drone, which has a suspension frame mounted underneath;

[0006] The suspension frame has a transmission component on one side, and two symmetrical folding arms are provided on the transmission component. The transmission component drives the folding arms to perform lateral movement, rotation or folding action, which is used to adjust the position of the end of the folding arms to realize the docking measurement of the line. The suspension frame has an adjustable balance component on the other side.

[0007] The receiving end is used to display the current value detected at the end of the folding arm.

[0008] Preferably, the transmission assembly includes a transverse shaft, a support shaft, and a drive separator; the two sides of the transverse shaft are respectively connected to the suspension frame as rotating shafts, and the middle of the transverse shaft has a threaded section with opposite threads at both ends; the support shaft is symmetrically provided with two support discs respectively connected to the threaded section, and the two ends of the support shaft are symmetrically provided with irregular gears connected to the suspension frame, and both ends of the irregular gears and the transverse shaft are connected to the drive separator.

[0009] Preferably, the drive separation component includes a drive shaft, a sliding sleeve, a driven wheel, and a power component; the drive shafts are arranged in pairs, with the middle part connected to the suspension frame via a rotating shaft, one end having a return spring, and the other end having a mating plate, with a braking component on one side of the mating plate on the drive shaft; the sliding sleeve has a drive wheel connected to a shaped gear, and the end of the sliding sleeve has a lug connected to the suspension frame; the driven wheel is connected to the side rotating shaft of the suspension frame and to the end of the lateral movement shaft; the power component is connected to the drive shaft.

[0010] Preferably, the power component includes a first motor and a second motor; the first motor is provided with a diamond-shaped power wheel that contacts the end of the drive shaft; the second motor is connected to the middle of the drive shaft through gears.

[0011] Preferably, the braking component includes a bracket and a rack; the bracket is fixed to the drive shaft at the top and connected to one side of the rack at the bottom; the rack is symmetrically provided with positioning posts that are slidably connected to the lugs.

[0012] Preferably, the driven wheel is provided with a slidable stop plate, and the driven wheel is provided with multiple through holes; multiple trigger posts are provided around the outer circle of the mating plate.

[0013] Preferably, the end of the drive shaft is provided with a guide bar; the inner wall of the sliding sleeve is provided with a guide groove that connects to the guide bar.

[0014] Preferably, the folding arm includes a base, an arm body, a measuring rod, and a winding component; the base is connected to a transmission assembly, and a compression cylinder connected to the arm body is provided on the base; one end of the arm body is connected to the base by a rotating shaft, and a movable cylinder connected to the compression cylinder is provided on one side of the arm body, with an angle adjustment component provided at the movable cylinder; the measuring rod is slidably connected to the arm body, and one end is connected to the angle adjustment component; the winding component is fixed to the side wall of the suspension frame and connected to the arm body via a rope.

[0015] Preferably, the angle adjustment component includes an adjustment rod and a rotating sleeve; the adjustment rod is fixed in the middle of the two movable cylinders; the middle of the rotating sleeve is sleeved with the arm body, one end is connected to the adjustment rod, and the other end is provided with a sliding frame connected to the measuring rod.

[0016] Preferably, the balancing assembly includes a base and counterweight cylinders; the base is connected to the right side of the suspension frame, and a fixing sleeve is symmetrically arranged on the base. The fixing sleeve has multiple communicating holes, and a transmission component for driving the displacement of the fixing sleeve is provided in the middle of the base. A rotatable liquid distribution pipe is provided inside the fixing sleeve. Multiple counterweight cylinders are installed at the communicating holes, and an adjustable volume cavity is provided inside the counterweight cylinder. A drive rod connected to the base is provided above the counterweight cylinder.

[0017] Compared with the prior art, the present invention has the following advantages:

[0018] 1. By combining the suspension frame with a drone, the drone's power is used to lift the entire frame to a height near the cable and hover it. Then, the angle and position of the folding arm are adjusted using the transmission components to achieve docking measurement with the cable. This greatly reduces the difficulty of inspection, can effectively deal with the inspection of cables in different areas, improves inspection efficiency, and avoids operational risks.

[0019] 2. By separating the folding arm to both sides of the suspension frame and folding itself to 90 degrees, the claw part is rotated and adjusted during the folding process. This allows for the measurement of two cables at once by controlling the displacement of the measuring rod, reducing the need for position adjustments to the drone, significantly improving detection efficiency, and shortening adjustment time.

[0020] 3. During the folding process, the movable cylinder is extended by relying on liquid pressure, thereby pushing the rotating sleeve to rotate 90 degrees along the adjusting rod, achieving the effect of automatically adjusting the position of the measuring rod claw. After it is in place, the positioning is locked. When unfolding, the liquid is pumped out to complete the reset. The overall structure is driven stably, and no additional power part is required, reducing manufacturing costs.

[0021] 4. The power can be switched through the drive separation component, which can meet the lateral displacement and rotation adjustment of the folding arm. After adjustment, each part of the structure can be locked, maintaining the stability after adjustment. Locking and positioning can be achieved by adjusting the position between the parts. The transmission is precise and ingenious, avoiding damage to the motor by braking force and extending service life.

[0022] 5. By configuring a water tank on the suspension frame and using a pump to deliver water to each counterweight cylinder, the change in the position of the liquid gravity is used to counterweight, which can solve the balance problem caused by the change of the folding arm position, reduce the difficulty of operating the drone and improve its stability.

[0023] 6. By dispensing liquid into each counterweight cylinder, the magnitude of gravity can be adjusted. Furthermore, by extending the entire cylinder, the balance in the unfolded state of the folding arm can be further balanced. At the same time, the counterweight cylinder can be rotated, and the balance can be finely adjusted by adjusting its position. This allows for auxiliary balancing operations in different states, reducing the workload of the drone and improving its stability.

[0024] 7. The liquid distribution pipe adopts a multi-chamber structure and is connected to the counterweight cylinders at different positions through connecting holes. Liquid can be distributed and transported as needed. Furthermore, the structural design of the connecting holes can maintain liquid supply even when the counterweight cylinder is rotated at a certain angle. The structural layout is reasonable. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of a high-precision flight hovering UAV equipped with a current detection device.

[0026] Figure 2 This is a schematic diagram of the transmission component layout;

[0027] Figure 3 This is a schematic diagram showing the connection status of the transmission components;

[0028] Figure 4 This is a schematic diagram of the connection at the drive separation component;

[0029] Figure 5 This is a schematic diagram of the drive separation component structure;

[0030] Figure 6 This is a schematic diagram showing the connection between the power component and the drive shaft;

[0031] Figure 7 This is a schematic diagram of an explosion at the drive shaft;

[0032] Figure 8 This is a demonstration diagram of the folding arm in its bent state;

[0033] Figure 9 This is a schematic diagram of the folding arm in its extended state;

[0034] Figure 10 This is a schematic diagram of the internal structure of the arm.

[0035] Figure 11 A schematic diagram of the manual adjustment structure for the measuring rod;

[0036] Figure 12 A schematic diagram of the balancing component arrangement;

[0037] Figure 13 A schematic diagram of the balanced component structure;

[0038] Figure 14 This is a schematic diagram of the fixed sleeve structure;

[0039] Figure 15 This is a schematic diagram of the end of the liquid dispensing pipe;

[0040] Figure 16 This is a schematic diagram of the internal structure of the liquid distribution pipe;

[0041] Figure 17This is a schematic diagram of the internal structure of the cavity;

[0042] Figure 18 A simplified diagram of the overall system;

[0043] Figure 19 This is a demonstration diagram of the drone's onboard detection status.

[0044] In the diagram: 1. Suspension frame; 2. Transmission assembly; 3. Folding arm; 4. Balancing assembly; 5. Drive separation component; 6. Power component; 7. Angle adjustment component; 8. Base; 9. Counterweight cylinder; 10. Liquid dispensing pipe; 11. UAV; 12. Receiver; 201. Lateral axis; 202. Support shaft; 203. Threaded section; 204. Support plate; 205. Special-shaped gear; 301. Base; 302. Arm body; 303. Measuring rod; 304. Rewinding component; 305. Extrusion cylinder; 306. Movable cylinder; 501. Drive shaft; 502. Sliding sleeve; 503. Driven wheel; 504. 505. Return spring; 506. Connecting plate; 507. Brake component; 508. Drive wheel; 509. Support lug; 5011. Guide bar; 5021. Guide groove; 5031. Stop plate; 5032. Through hole; 5051. Trigger pin; 5061. Bracket; 5062. Rack; 5063. Positioning pin; 601. First motor; 602. Second motor; 603. Drive wheel; 701. Adjusting rod; 702. Rotating sleeve; 703. Sliding frame; 801. Fixed sleeve; 802. Connecting hole; 803. Transmission component; 901. Cavity; 902. Drive rod. Detailed Implementation

[0045] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments and the accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of the invention. Furthermore, descriptions of well-known structures and techniques are omitted in the following description to avoid unnecessarily obscuring the concept of the invention.

[0046] Specific implementation method one: Combining Figure 1-19 As shown, a high-precision hovering unmanned aerial vehicle (UAV) mounted current detection device includes: a UAV 11, with a suspension frame 1 mounted below the UAV 11; the suspension frame 1 has a transmission component 2 on one side, and two symmetrically arranged folding arms 3 on the transmission component 2, the transmission component 2 driving the folding arms 3 to perform lateral movement, rotation or folding action, used to adjust the end position of the folding arms 3 to realize the connection measurement of the line, and an adjustable balancing component 4 is provided on the other side of the suspension frame 1; a receiving end 12, the receiving end 12 being used to display the current value detected at the end of the folding arms 3.

[0047] Preferred embodiments, in combination Figure 1-3As shown, the transmission assembly 2 includes a transverse shaft 201, a support shaft 202, and a drive separation component 5. The two sides of the transverse shaft 201 are connected to the suspension frame 1 as rotating shafts. A threaded section 203 with opposite thread directions is machined in the middle of the transverse shaft 201. The support shaft 202 consists of multiple cylindrical rods arranged circumferentially, with both ends fixedly connected to a shaped gear 205. A support disk 204 is slidably connected in the middle. A threaded sleeve connected to the threaded section is located at the center of the support disk 204. The threaded sleeve and the support disk 204 are rotatably connected. Both ends of the shaped gear 205 and the transverse shaft 201 are connected to the drive separation component 5. The drive separator 5 is connected to the transmission; through two threaded sections 203 with opposite rotation directions, it is connected to the corresponding threaded sleeves, so that when the transverse shaft 201 rotates, the two support disks 204 can be displaced in relative or opposite directions, thus completing the lateral adjustment of the folding arm 3. After adjustment, the drive separator 5 is used for positioning, and it can be switched to the special gear 205 for transmission to adjust the rotation angle of the folding arm 3. The overall structure operates stably. Among them, the support disk 204 has multiple small holes in the circumferential direction, which are equal in number to the cylindrical rods. The small holes can be sleeved with the cylindrical rods to allow for sliding displacement.

[0048] Preferred embodiments, in combination Figure 3-7 As shown, the drive separation component 5 includes a drive shaft 501, a sliding sleeve 502, a driven wheel 503, and a power component 6. The drive shafts 501 are arranged in pairs, with the middle section connected to the suspension frame 1 via a rotating shaft, and are located inside the support shaft 202. A return spring 504 is installed at one end of the drive shaft 501, and a mating disc 505 is fixed at the other end. The mating disc 505 is made of wear-resistant material and generates significant friction after contacting the surface of the driven wheel 503. A brake component 506 is fixed to one side of the mating disc 505 on the drive shaft 501, used to position the drive wheel 507 on the sliding sleeve after position adjustment. The drive wheel 507 is connected to the eccentric gear 205, thereby locking the support shaft 202. A lug 508 is installed at the end of the 502, which is fixed to the suspension frame 1 and forms a support for the sliding sleeve 502. The driven wheel 503 is connected to the side shaft of the suspension frame 1 and is arranged concentrically relative to the sliding sleeve 502. After displacement, it contacts the side of the mating disc 505 and the driven wheel 503, and uses friction to realize power transmission. The power component 6 is connected to the drive shaft 501 and is used to control the displacement adjustment of the drive shaft 501. The drive shaft 501 is equipped with a gear connected to the power component 6 near the return spring 504. The gear is connected to the drive shaft 501 in a spline connection form, which allows the drive shaft 501 to make axial displacement and maintain the transmission connection with the power component 6.

[0049] Under normal conditions, the output part of the power component 6 is connected to the special gear 205 through the drive wheel 507. Under single cable measurement, the angle can be adjusted at any time to achieve docking measurement with the cable. The power component 6 drives the drive shaft 501 to move, and the power of the drive shaft 501 is disconnected from the sliding sleeve 502. At the same time, the docking plate 505 contacts the side of the driven wheel 503 to form a power transmission. The connection between the driven wheel 503 and the end gear of the transverse shaft 201 drives the transverse shaft 201 to rotate, thereby completing the transverse separation between the two folding arms 3. At the same time, during the transverse transmission, the brake component 506 contacts the drive wheel 507 to lock the support shaft 202 in the circumferential direction.

[0050] Preferred embodiments, in combination Figure 3 As shown, to prevent the threaded sleeve inside the support plate 204 from rotating synchronously with the transverse axis 201 when the support plate 204 is adjusted laterally, a small electromagnetic push rod can be installed on one side of the support plate 204. An arc-shaped friction plate is fixed on the electromagnetic push rod. The friction plate contacts the outer circle of the threaded sleeve to achieve positioning. When angle adjustment is required, the positioning in the circumferential direction is released, so as not to interfere with the circumferential rotation of the folding arm 3.

[0051] Preferred embodiments, in combination Figure 4 and Figure 6 As shown, the power component 6 includes a first motor 601 and a second motor 602; a diamond-shaped power wheel 603 is keyed to the first motor 601, and the drive shaft 501 is kept in contact with the power wheel 603 under the elastic force of the return spring 504; the second motor 602 is connected to the gear on the drive shaft 501 through a gear to realize power transmission. By driving the power wheel 603 to rotate through the first motor 601, the displacement control of the drive shaft 501 can be realized. Moreover, the diamond-shaped structural design can reduce the contact area with the end of the drive shaft 501, thereby reducing the impact on the transmission.

[0052] Preferred embodiments, in combination Figure 3 As shown, the arrangement of components such as the drive shaft 501, power component 6, and transverse shaft 201 adopts a symmetrical structure, which can effectively ensure the overall balance, has a reasonable layout, and effectively improves stability.

[0053] Preferred embodiments, in combination Figure 4 and Figure 5As shown, the braking component 506 includes a bracket 5061 and a rack 5062. The bracket 5061 has an L-shaped structure, fixed at the top to the drive shaft 501, and fixedly connected to one side of the rack 5062 at the bottom. The rack 5062 is symmetrically fixed with positioning pins 5063 that are slidably connected to the lugs 508 to improve the stability of the displacement. When the drive shaft 501 is axially displaced, the drive shaft 501 disengages from the sliding sleeve 502, and then the rack 5062 contacts the drive wheel 507 to achieve positioning braking. As the displacement continues, the rack 505 contacts the driven wheel 503 to complete the power switching and prevent the folding arm 3 from rotating when it is laterally adjusted, which would affect the overall stability.

[0054] Preferred embodiments, in combination Figure 4-7 As shown, two guide posts are welded on the stop plate 5031. The guide posts are slidably connected to the side wall of the suspension frame 1. At the same time, a support spring is installed between the stop plate 5031 and the side wall of the suspension frame 1. Through the elastic force of the support spring, the stop plate 5031 is pushed to contact the other side of the driven wheel 503 to achieve positioning braking and avoid accidental rotation. Meanwhile, the driven wheel 503 is provided with multiple through holes 5032. Multiple trigger posts 5051 corresponding to the positions of the through holes 5032 are installed around the outer circle of the mating plate 505. Before the drive shaft 501 and the driven wheel 503 make contact and drive, the trigger posts 5051 first push the stop plate 5031 to disengage from the driven wheel 503 to avoid affecting the transmission and improve the transmission effect.

[0055] Preferred embodiments, in combination Figure 7 As shown, the end of the drive shaft 501 has multiple guide bars 5011 along the circumferential direction. The guide bars 5011 have a rectangular cross-section and a length that is less than the displacement distance of the rack 5062 before it contacts the drive wheel 507. The inner wall of the sliding sleeve 502 is provided with a guide groove 5021 that connects to the guide bars 5011. The transmission contact is achieved by connecting the two.

[0056] Preferred embodiments, in combination Figure 8-11As shown, the folding arm 3 includes a base 301, an arm body 302, a measuring rod 303, and a winding component 304. The base 301 is fixedly connected to the support plate 204. A compression cylinder 305 connected to the arm body 302 is installed on the base 301. The compression cylinder 305 contains liquid. One end of the arm body 302 is connected to the lower part of the base 301 by a rotating shaft. Two movable cylinders 306 connected to the compression cylinder 305 are symmetrically installed on one side of the arm body 302. The movable cylinders 306 and the compression cylinders 305 are connected by a pipeline. An angle adjustment component 7 is installed at the movable cylinder 306. The angle adjustment component 7 is driven to rotate by thrust. The measuring rod 303 is slidably connected to the arm body 302. One end is connected to the angle adjustment component 7, and the other end is equipped with a claw for measuring the cable. The winding component 304 is fixed to the side wall of the suspension frame 1 and connected to the arm body 302 by a rope to drive the arm body 302 to rotate and fold.

[0057] In practical applications, multiple cables often have a fixed spacing according to requirements. When it is necessary to measure two cables simultaneously, simply rotate the folding arm 3 to vertical downwards and drive the two bases 301 to their outermost positions. At this point, the rope is basically below the winding component 304. Then, the winding component 304 starts, pulling the arm 302 to rotate around the base 301. During the rotation, the compression cylinder 305 is compressed, and the internal liquid is transported to the movable cylinder 306. The movable cylinder 306 pushes the angle adjustment component 7 to do work, driving the measuring rod 303 to rotate 90 degrees, achieving synchronous adjustment. Subsequently, according to the cable spacing, the lateral position of the two measuring rods 303 can be adjusted individually to complete the measurement of two cables simultaneously. The detection of two cables can be completed with a single hover, greatly improving the detection efficiency, avoiding the operational difficulties caused by frequent adjustments, and saving adjustment time. Moreover, when detecting a single cable, the two arms 302 can be separated and measured simultaneously at a distance, improving the accuracy of the detection.

[0058] Preferred embodiments, in combination Figure 9 and Figure 10As shown, the angle adjustment component 7 includes an adjusting rod 701 and a rotating sleeve 702. The adjusting rod 701 is fixedly installed at the middle position of the two movable cylinders 306 and connected to the arm body 302. The middle part of the rotating sleeve 702 is sleeved with the arm body 302, one end of which is connected to the adjusting rod 701 to form a threaded connection, and the other end has a sliding frame 703 connected to the measuring rod 303. The adjusting rod 701 has a large pitch, the inner wall of the rotating sleeve 702 has a corresponding thread, and the end of the outer wall of the adjusting rod 701 has a structure with the guide bar 5011. The sliding frame 703 has a structure with the guide groove 5021, forming a sliding connection and maintaining torque transmission. The movable cylinder 306 triggers and pushes the adjusting rod 701 to rotate, driving the measuring rod 303 to achieve angle rotation. In addition, the cooperation of the squeezing cylinder 305 and the rope body, the stroke and tension can also realize the positioning of the arm body 302 and maintain the stability after adjustment.

[0059] Preferred embodiments, in combination Figure 12-17 As shown, the balancing assembly 4 includes a base 8 and counterweight cylinders 9. The base 8 is connected to the right side of the suspension frame 1. A fixed sleeve 801 is symmetrically provided on the base 8. The fixed sleeve 801 is circular and has a hollow structure inside. Multiple connecting holes 802 are machined on the fixed sleeve 801 and communicate with the interior. The connecting holes 802 have a certain length distance. A transmission component 803 is provided in the middle of the base 8 to drive the displacement of the fixed sleeve 801. A rotatable liquid distribution pipe 10 is provided inside the fixed sleeve 801. Multiple counterweight cylinders 9 are installed at the connecting holes 802. The counterweight cylinder 9 has an adjustable volume cavity 901 inside. A drive rod 902 connected to the base 8 is provided above the counterweight cylinder 9. The drive rod 902 drives the counterweight cylinder 9 to rotate, thereby realizing rotation adjustment.

[0060] In use, the entire arm extends outward through the transmission component 803. With the corresponding liquid weight, it can effectively balance the force of the folding arm 3 in the extended state. In windy conditions, it can also make fine adjustments by controlling the liquid difference between the two counterweight cylinders 9. At the same time, it can also rotate the counterweight cylinder 9 to achieve a one-sided weight distribution, generating a certain amount of counter-torque. This is used in conjunction with the drone adjustment to deal with the gravity imbalance caused by wind, achieving an auxiliary balancing effect and improving the stability of the drone when hovering or adjusting.

[0061] Preferred embodiments, in combination Figure 17 As shown, a sealing disc is installed inside the counterweight cylinder 9, and a force spring is installed on the outside of the sealing disc. At the same time, a vent is opened at the end of the counterweight cylinder 9. By increasing the liquid supply pressure, the sealing disc is pushed to compress the force spring, thereby increasing the internal storage space. The counterweight can be adjusted as needed, thus improving its practicality.

[0062] Preferred embodiments, in combination Figure 16As shown, the liquid distribution pipe 10 has liquid supply chambers corresponding to the number of connecting holes 802. Each liquid supply chamber is equipped with a liquid supply pipe that communicates with the outside. By controlling different liquid supply pipes to deliver liquid, liquid can be supplied to the counterweight cylinder 9 at different locations. Figure 15 As shown, the liquid distribution pipe 10 is further divided into left and right spaces. The left part is the position of the liquid supply chamber, while the right part is the liquid discharge space. By rotating the liquid distribution pipe 10 to a specified angle, it can be connected with the counterweight cylinder 9 to achieve the function of liquid discharge.

[0063] Preferred embodiments, in combination Figure 13 and Figure 14 As shown, the transmission component 803 has tracks on both sides that are connected to the fixed sleeve 801, which are used to position the fixed sleeve 801 and improve the stability of the sliding guide. Specific Implementation Method Two

[0065] Regarding the second structural form at point 3 of the folding arm;

[0066] Combination Figure 9 and Figure 11 As shown, a control motor can be installed at the connection between the boom 302 and the base 301, or a manual adjustment method can be used to directly fold it 90 degrees, replacing the liquid triggering method mentioned above. This can also meet the requirements, but it lacks certain controllability and cannot achieve adjustment in the mounted state. For the manual adjustment method, such as at the connection between the boom 302 and the base 301, rectangular slots are opened at corresponding angles at the pivot and the through holes of both. Under normal conditions, rectangular strips are inserted into the two rectangular slots to keep the boom 302 in the extended state. When folding is required, the rectangular strips are pulled out, the docking position of the rectangular slots is adjusted, and then they are inserted again. Using a control motor, automatic adjustment can be achieved, meeting the needs of high-altitude control. Specific Implementation Method 3

[0068] Combination Figure 10 and Figure 13 As shown, the drive structure of the measuring rod 303 and the structure of the transmission component 803 are both driven by a screw. Specifically, it includes a screw connected to a motor and a displacement frame. The middle part of the displacement frame is threaded to the screw, and the two sides are slidably connected to the components. By rotating the screw, the displacement frame is pushed to move, thereby realizing the displacement of the measuring rod 303 and the fixed sleeve 801. Specific Implementation Method Four

[0070] Combination Figure 1As shown, the liquid supply part of the balancing component 4 includes a liquid storage tank and a distribution frame. The liquid storage tank is fixed in the middle of the suspension frame 1 and contains liquid. Water pumps are installed at both the liquid outlet and the liquid return port. The distribution frame is fixed below the liquid storage tank and is equipped with multiple solenoid valves, which are connected to the liquid supply chamber in the liquid distribution pipe through pipelines to achieve separate control. The distribution frame also has a return solenoid valve that is connected to the drain space and is connected to the liquid storage tank through a pipeline.

[0071] This invention can also be applied to cable splicing operations. By changing the clamp-shaped measuring part at the end of the measuring rod 303 into a gripper structure, the splicing difficulty can be reduced by using a drone after clamping.

[0072] Combination Figure 8 As shown, the structure of the winding component 304 includes a fixed shaft and a drum. The fixed shaft is connected to the suspension frame 1, and the drum is sleeved on the fixed shaft. The drum has a coil spring structure connected to the fixed shaft. When the position of the folding arm changes, the rope can be pulled to extend. At the same time, the drum also has a control motor, which can drive the whole thing to perform winding operations in the opposite direction, thereby pulling the rope.

[0073] Experimental Example 1

[0074] Test procedure: The UAV is equipped with a current detection system to perform flight hovering tests on a wire with an operating condition of 240 square millimeters, a voltage of 220V, and a current of 300-500mA.

[0075] During the process, the current is adjusted 3 times, with each adjustment lasting 1 minute. The clamp meter and current count values ​​are recorded and compared. The accuracy requirements (23℃±5℃, below 80%RH) are: 0mA~5A: ±1.5%rdg+5dgt.

[0076] The parameter technical requirements are as follows:

[0077] It is capable of high-precision measurement of line current during insulator breakdown tests;

[0078] (1) Mounting method: DJI M300 (M350) series drones;

[0079] (2) Test method: clamp closure;

[0080] (3) Transmission method: wireless transmission; transmission distance ≥25 meters; real-time viewing of test data; convenient and fast to use.

[0081] (4) Sampling rate ≥ 2 times / second;

[0082] (5) Measurement range: 0mA~5A (50 / 60Hz automatic);

[0083] (6) Test accuracy (23℃±5℃, below 80%RH): 0mA~5A: ±1.5%rdg+5dgt;

[0084] The test results show a current error of 1% and a fluctuation range of 3%, which meets the accuracy requirements. Detailed data is as follows:

[0085]

[0086] First test: Ammeter reading: 366mA, clamp meter reading: 362mA, error -1.09%;

[0087] Second test: Ammeter reading: 452mA, clamp meter reading: 450mA, error -0.44%;

[0088] Third time: Ammeter reading: 504mA, clamp meter reading: 502mA, error -0.40%.

[0089] The above experiments show that, when the drone is suspended, the device can perform multiple measurements on the cable, which can well meet the actual testing requirements. In actual operation, when the drone is hovering, the device itself can be finely adjusted and controlled, which can greatly reduce the difficulty of operation and facilitate docking.

[0090] For the clamp-on ammeter at the end of the measuring rod, use ETCR9000A or ETCR9000B, and add a small motor to control the opening and closing of the jaws. The measuring range is AC 0mA~1200A.

[0091] Test accuracy, 23℃±5℃, below 80%RH:

[0092] 0mA~99.9A:±1%rdg±5dgt;

[0093] 100A~599A:±1.5%rdg±5dgt;

[0094] 600A~1200A:±2%rdg±5dgt;

[0095] Jaw size Ф48mm.

[0096] In summary, this invention utilizes drone suspension to replace traditional manual climbing operations, meeting the inspection needs of both high-altitude and low-altitude cables while avoiding operational risks. Furthermore, in the hovering state, adjustments to the transmission component 2 and the folding arm 3 allow for rapid connection and measurement with the cable, thereby shortening adjustment time and improving inspection efficiency. It can also complete the inspection of two cables at once, further reducing intermediate adjustment time and improving inspection efficiency when measuring multiple cables. This meets the needs of inspection operations over a wide area and reduces the workload for maintenance personnel.

[0097] It should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of the present invention and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of the present invention should be included within the protection scope of the present invention.

Claims

1. A high-precision flying hovering unmanned aerial vehicle (UAV) mounted current detection device, characterized in that, include: Unmanned aerial vehicle (11), with a suspension frame (1) mounted below the unmanned aerial vehicle (11); The suspension frame (1) has a transmission component (2) on one side, and two folding arms (3) are symmetrically arranged on the transmission component (2). The transmission component (2) drives the folding arms (3) to perform lateral movement, rotation or folding action, which is used to adjust the end position of the folding arms (3) to realize the docking measurement of the line. The suspension frame (1) has an adjustable balance component (4) on the other side. The receiver (12) is used to display the current value detected at the end of the folding arm (3); The folding arm (3) includes a base (301), an arm body (302), a measuring rod (303), and a winding component (304); the base (301) is connected to the transmission assembly (2), and the base (301) is provided with a compression cylinder (305) connected to the arm body (302); one end of the arm body (302) is connected to the base (301) by a rotating shaft, and one side of the arm body (302) is provided with a movable cylinder (306) connected to the compression cylinder (305), and an angle adjustment component (7) is provided at the movable cylinder (306); the measuring rod (303) is slidably connected to the arm body (302), and one end is connected to the angle adjustment component (7); the winding component (304) is fixed to the side wall of the suspension frame (1) and connected to the arm body (302) by a rope; The balancing assembly (4) includes a base (8) and counterweight cylinders (9); the base (8) is connected to the right side of the suspension frame (1), and the base (8) is symmetrically provided with fixed sleeves (801), the fixed sleeves (801) are provided with multiple connecting holes (802), the base (8) is provided with a transmission component (803) in the middle for driving the fixed sleeves (801) to move, and the fixed sleeves (801) are provided with a rotatable liquid distribution pipe (10); multiple counterweight cylinders (9) are installed at the connecting holes (802), the counterweight cylinders (9) are provided with a volume adjustable cavity (901) inside, and a drive rod (902) connected to the base (8) is provided above the counterweight cylinders (9); The liquid distribution pipe (10) has a liquid supply chamber corresponding to the number of connecting holes (802) inside. Each liquid supply chamber is equipped with a liquid supply pipe that communicates with the outside. The liquid distribution pipe (10) is also divided into left and right spaces. The left space is the position of the liquid supply chamber, while the right space is the drain space. By rotating the liquid distribution pipe (10) to a specified angle, communication with the counterweight cylinder (9) can be achieved.

2. The high-precision flying hovering UAV mounted current detection device according to claim 1, characterized in that: The transmission assembly (2) includes a transverse shaft (201), a support shaft (202), and a drive separator (5); the two sides of the transverse shaft (201) are respectively connected to the suspension frame (1) as rotating shafts, and the middle of the transverse shaft (201) has a threaded section (203) with opposite threads at both ends; the support shaft (202) is symmetrically provided with two support discs (204) respectively connected to the threaded section (203), and the two ends of the support shaft (202) are symmetrically provided with eccentric gears (205) connected to the suspension frame (1), and both ends of the eccentric gears (205) and the transverse shaft (201) are connected to the drive separator (5).

3. The high-precision flying hovering UAV mounted current detection device according to claim 2, characterized in that: The drive separation component (5) includes a drive shaft (501), a sliding sleeve (502), a driven wheel (503), and a power component (6). The drive shafts (501) are arranged in pairs, with the middle part connected to the suspension frame (1) by a rotating shaft. One end is provided with a return spring (504), and the other end is provided with a docking plate (505). A brake component (506) is provided on one side of the docking plate (505) on the drive shaft (501). The sliding sleeve (502) is provided with a drive wheel (507) connected to a shaped gear (205), and the end of the sliding sleeve (502) is provided with a support lug (508) connected to the suspension frame (1). The driven wheel (503) is connected to the side rotating shaft of the suspension frame (1) and is connected to the end of the transverse shaft (201). The power component (6) is connected to the drive shaft (501).

4. The high-precision flying hovering UAV mounted current detection device according to claim 3, characterized in that: The power component (6) includes a first motor (601) and a second motor (602); the first motor (601) is provided with a diamond-shaped power wheel (603) that contacts the end of the drive shaft (501); the second motor (602) is connected to the middle of the drive shaft (501) through gears.

5. A high-precision flying hovering UAV mounted current detection device according to claim 3, characterized in that: The braking component (506) includes a bracket (5061) and a rack (5062); the bracket (5061) is fixed on the drive shaft (501) at the top and connected to one side of the rack (5062) at the bottom; the rack (5062) is symmetrically provided with positioning pins (5063) that are slidably connected to the lugs (508).

6. A high-precision flying hovering UAV mounted current detection device according to claim 3, characterized in that: The driven wheel (503) is provided with a slidable stop disc (5031), and the driven wheel (503) is provided with a plurality of through holes (5032); the outer circle of the mating disc (505) is provided with a plurality of trigger pins (5051).

7. A high-precision flying hovering UAV mounted current detection device according to claim 3, characterized in that: The end of the drive shaft (501) is provided with a guide bar (5011); the inner wall of the sliding sleeve (502) is provided with a guide groove (5021) that is connected to the guide bar (5011).

8. A high-precision flying hovering UAV mounted current detection device according to claim 1, characterized in that: The angle adjustment component (7) includes an adjustment rod (701) and a rotating sleeve (702); the adjustment rod (701) is fixed in the middle of two movable cylinders (306); the middle part of the rotating sleeve (702) is sleeved with the arm body (302), one end is connected to the adjustment rod (701), and the other end is provided with a sliding frame (703) connected to the measuring rod (303).

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