Unmanned aerial vehicle electricity testing device

Abstract

An unmanned aerial vehicle electricity testing device disclosed by the present invention comprises an unmanned aerial vehicle, a suspension bracket and an electroscope, a pull rope is fixedly connected to the bottom of the unmanned aerial vehicle, the suspension bracket is suspended at the lower end of the pull rope, the suspension bracket comprises a first vertical rod, a second vertical rod and a vertical cylinder, a first telescopic rod is slidably connected in the vertical cylinder, and a first clamping rod and a second clamping rod are hinged to the lower end of the first telescopic rod. The lower included angle between the first clamping rod and the second clamping rod is smaller than 180 degrees. One side of the first vertical rod is provided with an electroscope, an electricity testing probe of the electroscope is electrically connected with the first clamping rod, and the first vertical rod and the second vertical rod are fixedly connected with balancing weights, so that the overall gravity center of the suspension bracket, the electroscope and the balancing weights is located below the high-voltage line during electricity testing. During electricity testing, the hanging rope is in a bent state, so that the situation that shaking of the unmanned aerial vehicle is transmitted to the suspension frame to affect electricity testing of the electroscope is avoided; the first clamping rod and the second clamping rod are clamped on the outer wall of the high-voltage line, so that the suspension bracket is in a stable and balanced state for electricity testing.

Description

Technical Field

[0001] The present invention relates to the technical field of electrical testing devices, and in particular to an electrical testing device for unmanned aerial vehicles. Background Art

[0002] The electrical test device uses specific technology and principles to determine whether the object being tested is charged, and in some cases, it can also provide a rough estimate of the amount of charge. It is an important device to ensure the safe operation of the power system, prevent electrical accidents, and perform maintenance and repair of electrical equipment.

[0003] The drone electrical testing device is an important technological innovation in the power industry. It combines the flexibility of multi-wing drones and the precision of electrical testing technology, bringing revolutionary changes to the electrical testing of high-voltage transmission lines. The multi-wing drone moves the electrical testing device to the high-voltage transmission line, and the personnel control the movement of the drone through the remote control device so that the electrical testing probe of the electrical testing device contacts the high-voltage line to detect whether the high-voltage line is energized. It does not require personnel to approach the high-voltage line, reducing the risk of electric shock and improving the safety of electrical testing; the drone has the ability to fly quickly and operate flexibly, and can quickly reach the designated location for electrical testing, shortening the operation time.

[0004] Due to the shaking of the drone when hovering, the probe of the tester of the existing drone tester cannot maintain stable contact with the high-voltage line during the test, and it is easy for the probe to not be in full contact with the high-voltage line, resulting in inaccurate test, which brings risks to the maintenance of high-voltage lines. For example, the Chinese patent announcement number CN112550742A in the prior art discloses a rotating drone tester, which includes a drone, the drone includes a frame; a rotating device, the rotating device includes a first rotating seat located above the frame, and a torque servo arranged on the frame for driving the first rotating seat to rotate, the rotation axis of the first rotating seat is perpendicular to the rotation axis of the propeller of the drone; a tester, the tester includes a mounting rod fixed on the first rotating seat and a tester fixed on the mounting rod; although this patent technology can improve the stability of the drone during the test, it cannot ensure that the probe is in continuous contact with the high-voltage line. In this type of device, the tester in the tester is affected by the movement of the drone, and the shaking of the drone affects the effectiveness of the contact between the probe of the tester and the high-voltage line, which brings risks to the maintenance of high-voltage lines. Summary of the invention

[0005] The purpose of the present invention is to solve the above technical problems and provide an unmanned aerial vehicle electrical testing device.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] The unmanned aerial vehicle electrical testing device comprises an unmanned aerial vehicle, a suspension frame, and an electrical tester. A pull rope is fixedly connected to the bottom of the unmanned aerial vehicle, and a suspension frame is suspended at the lower end of the pull rope. The suspension frame comprises a first vertical rod, a second vertical rod and a vertical cylinder, and the vertical cylinder is located between the first vertical rod and the second vertical rod; a first telescopic rod is slidably connected in the vertical cylinder, and the lower end of the first telescopic rod is hinged to a first clamping rod and a second clamping rod, an end of the first clamping rod away from the first telescopic rod is hingedly connected to the lower end of the first vertical rod, and the lower end of the second clamping rod is hingedly connected to the lower end of the second vertical rod, and the lower angle between the first clamping rod and the second clamping rod is less than 180°; an electrical tester is installed on one side of the first vertical rod, the first clamping rod is made of a metal conductive material, and the electrical test probe of the electrical tester is electrically connected to the first clamping rod, and a counterweight is fixedly connected to the first vertical rod and the second vertical rod, so that the overall center of gravity of the suspension frame, the electrical tester and the counterweight is located below the high-voltage line during the electrical test, thereby clamping the high-voltage line in the lower angle between the first clamping rod and the second clamping rod during the electrical test.

[0008] Furthermore, a first groove which is concave upward is formed at the bottom of the first clamping rod, and a second groove which is concave upward is formed at the bottom of the second clamping rod. The first groove and the second groove are arranged opposite to each other so as to clamp the high-voltage line on the outside when the high-voltage line is clamped.

[0009] Furthermore, a second telescopic rod is slidably connected in the vertical tube, the upper end of the second telescopic rod extends to the top of the vertical tube and is hingedly connected to a first connecting rod and a second connecting rod, the end of the first connecting rod away from the second telescopic rod is hingedly connected to the upper end of the first vertical rod, the end of the second connecting rod away from the second telescopic rod is hingedly connected to the upper end of the second vertical rod, the second telescopic rod is fixedly connected to a pull rope, the upper angle between the first connecting rod and the second connecting rod is less than 180°, and when the pull rope pulls the second telescopic rod upward, the angle between the first connecting rod and the second connecting rod increases, causing the first vertical rod and the second vertical rod to move in a direction away from the vertical tube.

[0010] Furthermore, connecting tubes are fixedly connected to the side walls on both sides of the vertical tube, and movable rods slidably matched with the connecting tubes are arranged in the connecting tubes. The movable rods on both sides of the vertical tube are fixedly connected to the first vertical rod and the second vertical rod respectively.

[0011] Furthermore, one end of the movable rod located in the connecting tube is fixedly connected to a slider, and the end of the connecting tube is fixedly connected to an end cover, and the end cover restricts the slider in the connecting tube.

[0012] Furthermore, a clamping warning device is installed on the second vertical rod, and the second clamping rod is made of conductive material. The first clamping rod and the second clamping rod are isolated by an insulating first telescopic rod so that the circuit between the hinge point of the first clamping rod and the second clamping rod is in a circuit-breaking state; the first clamping rod and the second clamping rod form a switching circuit which are respectively connected in series with the warning circuit of the clamping warning device. When the first clamping rod and the second clamping rod are clamped on the high-voltage line, the high-voltage line connects the circuits of the first clamping rod and the second clamping rod so that the switching circuit formed by the first clamping rod and the second clamping rod is connected, so that the warning circuit of the clamping warning device forms a closed loop to send out a warning signal.

[0013] Furthermore, the warning circuit of the clamping warning device includes an alarm, a battery, a first terminal, and a second terminal. The first terminal is electrically connected to the first clamping rod through an electric wire, the second terminal is electrically connected to the second clamping rod, one end of the battery is electrically connected to an electrical post of the alarm, the other end of the battery is electrically connected to the second terminal, and another electrical post of the alarm is electrically connected to the first terminal.

[0014] Furthermore, the alarm is an audible and visual alarm.

[0015] Furthermore, a compression spring is arranged in the vertical tube, one end of the compression spring abuts against the end of the first telescopic rod, and the other end of the compression spring abuts against the end of the second telescopic rod.

[0016] Furthermore, the lower end of the first vertical rod is fixedly connected to a first cross rod, on which a tester is installed, the lower end of the second vertical rod is fixedly connected to a second cross rod, on which a clamping warning device is installed; the first cross rod is fixedly connected to a first pull rod extending downward at one end away from the first vertical rod, the second cross rod is fixedly connected to a second pull rod extending downward at one end away from the second vertical rod, and the lower ends of the first pull rod and the second pull rod are respectively fixedly connected to counterweights.

[0017] The unmanned aerial vehicle electrical testing device provided by the present invention has the following beneficial effects: the suspension frame is suspended below the unmanned aerial vehicle by a pulling rope. During the electrical testing process, the unmanned aerial vehicle moves the suspension frame above the high-voltage line, and then descends so that the high-voltage line is located between the first clamping rod and the second clamping rod. When the unmanned aerial vehicle continues to descend, the hanging rope is in a bent state and no longer provides an upward pulling force to the suspension frame, thereby preventing the shaking of the unmanned aerial vehicle from transmitting the shaking to the suspension frame, and preventing the shaking of the unmanned aerial vehicle from affecting the electrical testing of the electrical tester; when the suspension frame is not pulled upward by the unmanned aerial vehicle, the counterweight block provides gravity to pull the first vertical rod and the second vertical rod downward, so that the first telescopic rod is retracted into the vertical cylinder, and the first clamping rod and the second clamping rod are clamped on the outer wall of the high-voltage line, and the first clamping rod is clamped on the outer wall of the high-voltage line, so that the high-voltage line is electrically connected to the electrical tester, and the high-voltage line is tested by the electrical tester; at the same time, since the overall center of gravity of the suspension frame and the appendages fixed thereon are located below the high-voltage line, the suspension frame is in a stable and balanced state, thereby preventing the suspension frame from tipping over on a single high-voltage line, keeping the suspension frame in a stable state, and then the electrical tester is in a stable state for electrical testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The specific embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings:

[0019] Figure 1 A schematic diagram of the structure of the UAV electrical testing device provided by the present invention;

[0020] Figure 2 A schematic diagram of the local structure of the suspension frame in the UAV electrical testing device provided by the present invention;

[0021] Figure 3 for Figure 2 Schematic diagram of the local structure of part A in the middle;

[0022] Figure 4 A schematic diagram of a partial cross-sectional structure of a hinged joint between a first clamping rod and a second clamping rod in the UAV electrical testing device provided by the present invention;

[0023] Figure 5 A schematic diagram of the structure of the UAV electrical testing device provided by the present invention and the high-voltage line clamped state;

[0024] Figure 6 A circuit diagram of the connection between the warning circuit and the first clamping rod and the second clamping rod in the UAV electrical testing device provided by the present invention.

[0025] Explanation of the numbers in the figure: 1. UAV; 2. Suspension frame; 21. First vertical rod; 211. First horizontal rod; 212. First pull rod; 22. Second vertical rod; 221. Second horizontal rod; 222. Second pull rod; 23. Vertical cylinder; 231. Connecting cylinder; 232. Movable rod; 233. Slider; 234. End cover; 235. Compression spring; 24. First telescopic rod; 25. First clamping rod; 251. First groove; 26. Second clamping rod; 261. Second groove; 27. Second telescopic rod; 28. First connecting rod; 29. ​​Second connecting rod; 3. Electrical tester; 4. Pull rope; 5. Counterweight; 6. Clamping warning device; 61. Alarm; 62. Battery; 63. First terminal; 64. Second terminal; 7. High-voltage line. DETAILED DESCRIPTION

[0026] It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] It should be noted that all directional indications in the embodiments of the present invention (such as up-down-left-right-front-back...) are only used to explain the relative position relationship - movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly. The connection can be a direct connection or an indirect connection.

[0029] like Figure 1-Figure 6As shown, the unmanned aerial vehicle electrical testing device includes a unmanned aerial vehicle 1, a suspension frame 2, and an electrical tester 3. A pull rope 4 is fixedly connected to the bottom of the unmanned aerial vehicle 1, and the suspension frame 2 is suspended at the lower end of the pull rope 4. The suspension frame 2 includes a first vertical rod 21, a second vertical rod 22 and a vertical cylinder 23. The vertical cylinder 23 is located between the first vertical rod 21 and the second vertical rod 22; a first telescopic rod 24 is slidably connected in the vertical cylinder 23, and the lower end of the first telescopic rod 24 is hinged to a first clamping rod 25 and a second clamping rod 26. The end of the first clamping rod 25 away from the first telescopic rod 24 is hinged to the lower end of the first vertical rod 21, and the second clamping rod 26 is hinged to the lower end of the first vertical rod 21. The lower end of the clamping rod 26 is hingedly connected to the lower end of the second vertical rod 22, and the lower angle between the first clamping rod 25 and the second clamping rod 26 is less than 180°; a tester 3 is installed on one side of the first vertical rod 21, and the first clamping rod 25 is made of metal conductive material. The test probe of the tester 3 is electrically connected to the first clamping rod 25, and the first vertical rod 21 and the second vertical rod 22 are fixedly connected with a counterweight 5, so that the overall center of gravity of the suspension frame 2, the tester 3 and the counterweight 5 is located below the high-voltage line 7 during the test, so that the high-voltage line 7 is clamped in the lower angle between the first clamping rod 25 and the second clamping rod 26 during the test.

[0030] By adopting the above technical solution, the suspension frame 2 is suspended under the drone 1 by the pull rope 4. During the electrical test, the drone 1 moves the suspension frame 2 to above the high-voltage line 7, and then descends so that the high-voltage line 7 is located between the first clamping rod 25 and the second clamping rod 26. The drone 1 continues to descend and the hanging rope is in a bent state, so that it no longer provides an upward pulling force to the suspension frame 2, thereby preventing the shaking of the drone 1 from transmitting the shaking to the suspension frame 2, and preventing the shaking of the drone 1 from affecting the electrical test of the electrician 3; when the suspension frame 2 is not pulled upward by the drone 1, the counterweight block 5 provides gravity to pull the first vertical rod 21 and the second vertical rod 22 downward. The first telescopic rod 24 is retracted into the vertical tube 23, and the first clamping rod 25 and the second clamping rod 26 are clamped on the outer wall of the high-voltage line 7. The first clamping rod 25 is clamped on the outer wall of the high-voltage line 7, so that the high-voltage line 7 is electrically connected to the electroscope 3, and the high-voltage line 7 is tested by the electroscope 3. At the same time, since the overall center of gravity of the suspension frame 2 and the accessories fixed thereon are located below the high-voltage line 7, the suspension frame 2 is in a stable and balanced state, thereby preventing the suspension frame 2 from tipping over on the single high-voltage line 7, keeping the suspension frame 2 in a stable state, and then the electroscope 3 is in a stable state for testing. It should be noted that the lower angle between the first clamping rod 25 and the second clamping rod 26 is the angle between the line connecting the hinge points at both ends of the first clamping rod 25 and the line connecting the hinge points at both ends of the second clamping rod 26.

[0031] The bottom of the first clamping rod 25 is provided with a first groove 251 which is recessed upward, and the bottom of the second clamping rod 26 is provided with a second groove 261 which is recessed upward. The first groove 251 and the second groove 261 are arranged opposite to each other so as to clamp the high-voltage wire 7 on the outside of the high-voltage wire 7. By arranging the first groove 251 and the second groove 261 to clamp the outside of the high-voltage wire 7, the high-voltage wire 7 is prevented from sliding along the first clamping rod 25 or the second clamping rod 26 during the clamping process, so as to prevent the high-voltage wire 7 from being effectively clamped.

[0032] A second telescopic rod 27 is slidably connected in the vertical cylinder 23, and the upper end of the second telescopic rod 27 extends to the top of the vertical cylinder 23 and is hingedly connected to a first connecting rod 28 and a second connecting rod 29. The end of the first connecting rod 28 away from the second telescopic rod 27 is hingedly connected to the upper end of the first vertical rod 21, and the end of the second connecting rod 29 away from the second telescopic rod 27 is hingedly connected to the upper end of the second vertical rod 22. The second telescopic rod 27 is fixedly connected to the pull rope 4, and the upper angle between the first connecting rod 28 and the second connecting rod 29 is less than 180°. When the pull rope 4 pulls the second telescopic rod 27 upward, the angle between the first connecting rod 28 and the second connecting rod 29 increases, so that the first vertical rod 21 and the second vertical rod 22 move away from the vertical cylinder 23. After the electrical test is completed, the drone 1 moves upward to stretch the pull rope 4, and the pull rope 4 pulls the second telescopic rod 27 upward, and the second telescopic rod 27 moves upward, thereby increasing the angle between the first connecting rod 28 and the second connecting rod 29, and the first vertical rod 21 and the second vertical rod 22 are stretched to both sides, so that the first vertical rod 21 and the second vertical rod 22 move away from the vertical tube 23, thereby driving the lower angle between the first clamping rod 25 and the second clamping rod 26 to increase, thereby releasing the clamping of the high-voltage line 7, making it easier to move the suspension frame 2 off the high-voltage line 7.

[0033] The side walls of the vertical tube 23 are fixedly connected with connecting tubes 231, and the connecting tubes 231 are provided with movable rods 232 that are slidably matched with the connecting tubes 231. The movable rods 232 on both sides of the vertical tube 23 are respectively fixedly connected with the first vertical rod 21 and the second vertical rod 22. The movable rods 232 cooperate with the connecting tubes 231, so that the first vertical rod 21 and the second vertical rod 22 move synchronously.

[0034] One end of the movable rod 232 located in the connecting tube 231 is fixedly connected to a slider 233, and an end cap 234 is fixedly connected to the end of the connecting tube 231, and the end cap 234 limits the slider 233 in the connecting tube 231. The slider 233 is limited by the end cap 234, so as to prevent the movable rod 232 from being pulled out of the connecting tube 231, and at the same time, the distance between the first vertical rod 21 and the second vertical rod 22 and the vertical tube 23 is limited, so as to prevent the first vertical rod 21 and the second vertical rod 22 from being pulled away, resulting in the upper angle between the first connecting rod 28 and the second connecting rod 29 exceeding 180°, and at the same time, the lower angle between the first clamping rod 25 and the second clamping rod 26 is prevented from exceeding 180°. It should be noted that when the lower angle between the first clamping rod 25 and the second clamping rod 26 exceeds 180°, the lower end will become a sharp angle, so that the high-voltage line 7 cannot be introduced between the first clamping rod 25 and the second clamping rod 26 for clamping, which is not convenient for clamping the high-voltage line 7 for electrical testing; similarly, when the upper angle between the first connecting rod 28 and the second connecting rod 29 exceeds 180°, the pull rope 4 pulls the second telescopic rod 27 upward, the first connecting rod 28 and the second connecting rod 29 fit together, causing the first vertical rod 21 and the second vertical rod 22 to approach each other, thereby preventing the first clamping rod 25 and the second clamping rod 26 from loosening the high-voltage line 7.

[0035] A clamping warning device 6 is installed on the second vertical rod 22, and the second clamping rod 26 is made of conductive material. The first clamping rod 25 and the second clamping rod 26 are isolated from each other by the insulating first telescopic rod 24, so that the circuit between the hinge point of the first clamping rod 25 and the second clamping rod 26 is in a circuit-breaking state; the first clamping rod 25 and the second clamping rod 26 form a switching circuit that is respectively connected in series with the warning circuit of the clamping warning device 6. When the first clamping rod 25 and the second clamping rod 26 are clamped on the high-voltage line 7, the high-voltage line 7 connects the circuit of the first clamping rod 25 and the second clamping rod 26, so that the switching circuit formed by the first clamping rod 25 and the second clamping rod 26 is connected, so that the warning circuit of the clamping warning device 6 forms a closed loop to send out a warning signal. A switching circuit is formed by the first clamping rod 25 and the second clamping rod 26. When the high-voltage line 7 is clamped, the conductor of the high-voltage line 7 conducts the circuit between the first clamping rod 25 and the second clamping rod 26, so that the warning circuit forms a closed loop and sends out a warning signal. When the ground personnel see the warning signal, they can judge that the first clamping rod 25 and the second clamping rod 26 have clamped the high-voltage line 7, thereby avoiding the erroneous judgment that the electrical test result of the electrical test device is no electricity when the high-voltage line 7 is not clamped.

[0036] Specifically, the warning circuit of the clamping warning device 6 includes an alarm 61, a battery 62, a first terminal 63, and a second terminal 64. The first terminal 63 is electrically connected to the first clamping rod 25 through an electric wire, and the second terminal 64 is electrically connected to the second clamping rod 26. One end of the battery 62 is electrically connected to an electrical post of the alarm 61, and the other end of the battery 62 is electrically connected to the second terminal 64. Another electrical post of the alarm 61 is electrically connected to the first terminal 63. When the first clamping rod 25 and the second clamping rod 26 are clamped on the high-voltage line 7, the circuit between the first clamping rod 25 and the second clamping rod 26 is connected, so that the electrical poles of the alarm 61 are connected to the battery 62 and then an alarm signal is issued. Preferably, the alarm 61 adopts an audible and visual alarm 61. Thus, the high-voltage line 7 is clamped by sound and flashing lights, so that it is easy to judge whether the high-voltage line 7 is clamped.

[0037] A compression spring 235 is provided in the vertical cylinder 23, one end of the compression spring 235 abuts against the end of the first telescopic rod 24, and the other end of the compression spring 235 abuts against the end of the second telescopic rod 27. By providing the compression spring 235, the suspension frame 2 is in an unfolded state in a natural state.

[0038] The lower end of the first vertical rod 21 is fixedly connected to a first cross bar 211, on which an electroscope 3 is installed, the lower end of the second vertical rod 22 is fixedly connected to a second cross bar 221, on which a clamping warning device 6 is installed; the first cross bar 211 is fixedly connected to a first pull rod 212 extending downward at one end away from the first vertical rod 21, and the second cross bar 221 is fixedly connected to a second pull rod 222 extending downward at one end away from the second vertical rod 22, and the lower ends of the first pull rod 212 and the second pull rod 222 are respectively fixedly connected to counterweights 5. By arranging counterweights 5 on both sides, the weight on both sides of the suspension frame 2 is kept balanced, which is beneficial for the drone 1 to keep balance when moving, and also keeps balance when clamping the high-voltage line 7.

[0039] The parts not involved in this technical solution can be implemented by using existing technologies.

[0040] The above shows and describes the basic principles, main features and characteristics of the present invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements fall within the scope of the present invention to be protected. The scope of the present invention to be protected includes the attached claims and their equivalents.

Claims

1. UAV electrical testing device, characterized by: The invention comprises an unmanned aerial vehicle (1), a suspension frame (2), and an electroscope (3); a pull rope (4) is fixedly connected to the bottom of the unmanned aerial vehicle (1); the suspension frame (2) is suspended at the lower end of the pull rope (4); the suspension frame (2) comprises a first vertical rod (21), a second vertical rod (22), and a vertical cylinder (23); the vertical cylinder (23) is located between the first vertical rod (21) and the second vertical rod (22); a first telescopic rod (24) is slidably connected in the vertical cylinder (23); the lower end of the first telescopic rod (24) is hinged to a first clamping rod (25) and a second clamping rod (26); an end of the first clamping rod (25) away from the first telescopic rod (24) is hinged to the lower end of the first vertical rod (21); and the second clamping rod (26) is hinged to the lower end of the first vertical rod (21). The lower end of the first vertical rod (26) is hingedly connected to the lower end of the second vertical rod (22), and the lower angle between the first clamping rod (25) and the second clamping rod (26) is less than 180°; a tester (3) is installed on one side of the first vertical rod (21), and the first clamping rod (25) is made of a metal conductive material. The test probe of the tester (3) is electrically connected to the first clamping rod (25), and the first vertical rod (21) and the second vertical rod (22) are fixedly connected with a counterweight (5), so that the overall center of gravity of the suspension frame (2), the tester (3) and the counterweight (5) is located below the high-voltage line (7) during the test, so that the high-voltage line (7) is clamped in the lower angle between the first clamping rod (25) and the second clamping rod (26) during the test.

2. The UAV electrical testing device according to claim 1, characterized in that: The bottom of the first clamping rod (25) is provided with a first groove (251) which is recessed upwards, and the bottom of the second clamping rod (26) is provided with a second groove (261) which is recessed upwards, and the first groove (251) and the second groove (261) are arranged opposite to each other so as to clamp the high-voltage wire (7) on the outside thereof when the high-voltage wire (7) is clamped.

3. The UAV electrical testing device according to claim 1, characterized in that: A second telescopic rod (27) is slidably connected in the vertical tube (23); the upper end of the second telescopic rod (27) extends to the top of the vertical tube (23) and is hingedly connected to a first connecting rod (28) and a second connecting rod (29); an end of the first connecting rod (28) away from the second telescopic rod (27) is hingedly connected to the upper end of the first vertical rod (21); an end of the second connecting rod (29) away from the second telescopic rod (27) is hingedly connected to the upper end of the second vertical rod (22); the second telescopic rod (27) is fixedly connected to the pull rope (4); an upper angle between the first connecting rod (28) and the second connecting rod (29) is less than 180°; when the pull rope (4) pulls the second telescopic rod (27) upward, the angle between the first connecting rod (28) and the second connecting rod (29) increases, so that the first vertical rod (21) and the second vertical rod (22) move in a direction away from the vertical tube (23).

4. The UAV electrical testing device according to claim 3, characterized in that: A connecting tube (231) is fixedly connected to the side walls on both sides of the vertical tube (23), and a movable rod (232) is provided in the connecting tube (231) and is slidably matched with the connecting tube (231). The movable rods (232) on both sides of the vertical tube (23) are fixedly connected to the first vertical rod (21) and the second vertical rod (22) respectively.

5. The UAV electrical testing device according to claim 4, characterized in that: One end of the movable rod (232) located in the connecting tube (231) is fixedly connected to a slider (233), and the end of the connecting tube (231) is fixedly connected to an end cover (234), and the end cover (234) restricts the slider (233) in the connecting tube (231).

6. The UAV electrical testing device according to claim 1, characterized in that: The second vertical rod (22) is provided with a clamping warning device (6). The second clamping rod (26) is made of a conductive material. The first clamping rod (25) and the second clamping rod (26) are isolated from each other by an insulating first telescopic rod (24), so that the hinge point between the first clamping rod (25) and the second clamping rod (26) is in a circuit-breaking state. The first clamping rod (25) and the second clamping rod (26) form a switch circuit, which is respectively connected in series with the warning circuit of the clamping warning device (6). When the first clamping rod (25) and the second clamping rod (26) are clamped on the high-voltage line (7), the high-voltage line (7) connects the circuit between the first clamping rod (25) and the second clamping rod (26), so that the switch circuit formed by the first clamping rod (25) and the second clamping rod (26) is connected, so that the warning circuit of the clamping warning device (6) forms a closed loop to send out a warning signal.

7. The UAV electrical testing device according to claim 6, characterized in that: The warning circuit of the clamping warning device (6) comprises an alarm (61), a battery (62), a first terminal (63), and a second terminal (64); the first terminal (63) is electrically connected to the first clamping rod (25) through an electric wire; the second terminal (64) is electrically connected to the second clamping rod (26); one end of the battery (62) is electrically connected to an electrical connection post of the alarm (61); the other end of the battery (62) is electrically connected to the second terminal (64); and the other electrical connection post of the alarm (61) is electrically connected to the first terminal (63).

8. The UAV electrical testing device according to claim 6, characterized in that: The alarm (61) is an audible and visual alarm (61).

9. The UAV electrical testing device according to claim 3, characterized in that: A compression spring (235) is arranged in the vertical tube (23), one end of the compression spring (235) abuts against the end of the first telescopic rod (24), and the other end of the compression spring (235) abuts against the end of the second telescopic rod (27).

10. The UAV electrical testing device according to claim 3, characterized in that: The lower end of the first vertical rod (21) is fixedly connected to a first cross rod (211), and a tester (3) is installed on the first cross rod (211); the lower end of the second vertical rod (22) is fixedly connected to a second cross rod (221), and a clamping warning device (6) is installed on the second cross rod (221); the end of the first cross rod (211) away from the first vertical rod (21) is fixedly connected to a first pull rod (212) extending downward, and the end of the second cross rod (221) away from the second vertical rod (22) is fixedly connected to a second pull rod (222) extending downward, and the lower ends of the first pull rod (212) and the second pull rod (222) are respectively fixedly connected to counterweights (5).

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