Unmanned aerial vehicle cable anti-winding device

Abstract

The invention discloses an unmanned aerial vehicle cable anti-winding device, and relates to the technical field of cable take-up and pay-off, the unmanned aerial vehicle cable anti-winding device comprises a base and a take-up and pay-off mechanism, the base is provided with a pair of fixing plates, a main shaft is connected between the pair of fixing plates, the main shaft is rotatably connected with a cable cylinder, and a cable body is wound on the cable cylinder; the main shaft is arranged on the base, the winding and unwinding mechanism is arranged on the main shaft and used for releasing and recycling the cable body, and the auxiliary mechanism is arranged on the base and used for judging the state of the cable body and assisting winding and unwinding of the cable body. When the unmanned aerial vehicle flies upwards or away from the device, the cable body is automatically released or recycled, the unmanned aerial vehicle is provided for flying, when the unmanned aerial vehicle returns or flies close to the device, the situation that the redundant cable body falls on the ground and is dragged, abraded and wound is avoided, and the cable body is well protected.

Description

Technical Field

[0001] The present invention relates to the technical field of cable retracting and releasing, and in particular to an anti-entanglement device for cables of unmanned aerial vehicles. Background Art

[0002] Tethered drones, also known as tethered UAVs, are a special form of multi-rotor UAVs. The emergence of tethered drones can effectively solve the problem of energy consumption of drones. They provide power to aerial drones from the ground through cables and transmit the signals on the drones to the ground through optical fibers. They have the characteristics of light weight and high transmission current density, which can effectively extend the working time of drones.

[0003] During the flight of a tethered UAV, due to the uncertainty of the UAV's flight path, when the UAV takes off from a long distance, the cables need to be continuously released to meet the flight needs of the UAV. When the UAV gets closer, the previously released cables will become redundant and too long. If not recovered in time, these redundant cables will fall to the ground, causing cable surface wear, cable entanglement, etc. This will not only affect the stability of signal transmission, but also cause safety problems for the UAV in severe cases. Therefore, a UAV cable anti-entanglement device is proposed. Summary of the invention

[0004] The purpose of the present invention is to solve the problems in the prior art and to propose an anti-entanglement device for drone cables.

[0005] A drone cable entanglement prevention device comprises a base and a retractable mechanism, wherein a pair of fixing plates are mounted on the base, a main shaft is connected between the pair of fixing plates, a cable drum is rotatably connected to the main shaft, a cable body is wound around the cable drum, the retractable mechanism is mounted on the main shaft and is used to release and recycle the cable body, and an auxiliary mechanism is provided on the base for determining the state of the cable body and assisting in the retracting and releasing of the cable body; The retracting and releasing mechanism includes a first rotating sleeve and a second rotating sleeve, wherein the first rotating sleeve and the second rotating sleeve are respectively coaxially rotatably connected to the two ends of the main shaft, the first rotating sleeve and the second rotating sleeve are hexagonal prism structures, the first rotating sleeve and the second rotating sleeve are both provided with sliding sleeves, the sliding sleeve close to the first rotating sleeve is coaxially connected with the first friction disk, and the sliding sleeve close to the second rotating sleeve is coaxially connected with the second friction disk, the two sliding sleeves are both coaxially rotatably connected with rotating rings, the two rotating rings are both connected with connecting plates, the top of a pair of fixed plates is connected with a top plate, the bottom of the top plate is connected with a fixed cylinder, the two ends of the fixed cylinder are sealed and slidably connected with sliding rods, the two ends of the sliding rods are respectively connected to the top ends of the two connecting plates, and the first rotating sleeve and the second rotating sleeve are also provided with a power component for driving the cable drum to rotate.

[0006] Preferably, the power assembly includes a motor, which is mounted on the fixed plate, and a pair of bottoms of the fixed plates are rotatably connected to a rotating shaft, the output shaft of the motor is coaxially connected to the rotating shaft, a small gear and a driving wheel are coaxially connected to the rotating shaft, a large gear is coaxially connected to the first rotating sleeve, the large gear is meshed with the small gear, and a driven wheel is coaxially connected to the second rotating sleeve, and a transmission belt is commonly provided on the driving wheel and the driven wheel.

[0007] Preferably, the auxiliary mechanism comprises a mounting column and an air pump, the mounting column is mounted on a base, a mounting groove is provided on the top of the mounting column, two guide wheels are rotatably connected in the mounting groove through two pairs of connecting shafts, annular guide grooves are provided on the two guide wheels for guiding the cable body to pass through, the air pump is mounted on a top plate, an air outlet of the air pump is connected to an air supply pipe, the air supply pipe is connected to a first air delivery pipe and a second air delivery pipe, the ends of the first air delivery pipe and the second air delivery pipe away from the air supply pipe are respectively connected to the two ends of a fixed cylinder, a piston block is connected to the middle position of the sliding rod, the piston block is sealingly and slidably connected to the inner wall of the fixed cylinder, a first spring is sleeved on both ends of the sliding rod, the two ends of the first springs are connected to the piston block and the inner wall of the fixed cylinder, and the two ends of the fixed cylinder are respectively connected to A first air duct and a second air duct, an electromagnetic valve is arranged in the first air supply pipe and the second air supply pipe, two mounting rods are connected to the side of the mounting column away from the fixed plate, the two mounting rods are respectively located at the upper and lower sides of the mounting groove, a sliding groove is opened at one end of each mounting rod away from the mounting column, a slider is slidably connected in the sliding groove, and a detection rod is connected to one end of each slider located on the outer side of the sliding groove, a second spring is arranged in each sliding groove, and the two ends of the second spring are respectively connected to the slider and the groove wall of the sliding groove, and pressure sensors are arranged on the two detection rods, the pressure sensor on the detection rod near the top is electrically connected to the electromagnetic valve in the first air supply pipe, and the pressure sensor on the detection rod near the bottom is electrically connected to the electromagnetic valve in the second air supply pipe, and the two pressure sensors are electrically connected to the control circuit of the air pump.

[0008] Preferably, a cavity is provided in each of the guide wheels, a plurality of air outlet holes are provided in a circular array in the guide groove of each of the guide wheels and are connected to the cavity, an air guide groove is provided on a connecting shaft on each of the guide wheels and is connected to the cavity, and the two air guide grooves on the two connecting shafts are connected to the first air guide pipe.

[0009] Preferably, the mounting column is located at the mounting groove and is connected to a cleaning ring close to one side of the mounting rod, an annular cavity is provided in the cleaning ring, the annular cavity of the cleaning ring is sealed and connected to the second air duct, and a plurality of inclined jet holes are provided on the inner ring surface of the cleaning ring in the form of an annular array and connected to the annular cavity.

[0010] Preferably, the diameter of the first air duct is smaller than the diameter of the first air delivery pipe, and the diameter of the second air duct is smaller than the diameter of the second air delivery pipe.

[0011] Preferably, the transmission ratio between the large gear and the small gear is 1:10, and the transmission ratio between the driving wheel and the driven wheel is 10:1.

[0012] Compared with the prior art, the present invention has the following advantages: 1. The present invention is provided with a retractable mechanism and an auxiliary mechanism to cooperate with each other, which can judge the state of the cable body by itself and automatically release or recycle the cable body. When the UAV flies upward or away from the device, it can meet the flight needs of the UAV, and when the UAV returns or flies close to the device, it can avoid the redundant cable body from falling to the ground and causing dragging, wear and entanglement, thereby providing better protection for the cable body.

[0013] 2. When the cable body is released, the present invention inputs air into the cavity through the first air guide pipe and the air guide groove, and then sprays it out through multiple air outlets, spraying air into the gap between the guide wheel and the cable body, thereby reducing the friction force on the cable body and reducing the pulling force of the drone on the cable body. On the one hand, it prevents the drone from separating from the cable body due to excessive pulling force, and on the other hand, the reduction in pulling force can increase the service life of the cable body.

[0014] 3. When the cable body is recovered, the present invention sends air into the annular cavity of the cleaning ring through the second air duct, and then sprays it out through multiple air jet holes to spray the surface of the recovered cable body at an inclined angle, effectively removing dust and other impurities adhered to the surface of the cable body during use, and ensuring the cleanliness of the recovered cable body. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the present invention.

[0016] Figure 2 It is a structural schematic diagram of the retractable mechanism part of the present invention.

[0017] Figure 3 It is a structural cross-sectional view of the fixed cylinder part in the present invention.

[0018] Figure 4 It is a schematic diagram of the structure of the auxiliary mechanism part in the present invention.

[0019] Figure 5 It is a structural cross-sectional view of the auxiliary mechanism part in the present invention.

[0020] Figure 6 for Figure 5 Enlarged schematic diagram at point A in the middle.

[0021] Figure 7It is a structural sectional view of the guide wheel in the present invention.

[0022] In the figure: 1 base, 11 fixed plate, 12 main shaft, 13 cable drum, 14 cable body, 15 top plate, 2 retracting mechanism, 21 motor, 22 first rotating sleeve, 221 first friction disc, 222 large gear, 223 small gear, 23 second rotating sleeve, 231 second friction disc, 232 driving wheel, 233 driven wheel, 234 transmission belt, 24 sliding sleeve, 241 rotating ring, 25 fixed cylinder, 251 sliding rod, 252 connecting plate, 26 rotating shaft, 3 auxiliary mechanism, 31 installation Mounting column, 311 mounting groove, 32 guide wheel, 321 connecting shaft, 322 guide groove, 323 cavity, 324 air outlet, 325 air guide groove, 33 air pump, 34 air supply pipe, 341 first air delivery pipe, 342 second air delivery pipe, 35 piston block, 351 first spring, 36 first air guide pipe, 37 second air guide pipe, 38 mounting rod, 381 slide groove, 382 slider, 383 detection rod, 384 second spring, 39 cleaning ring, 391 annular cavity, 392 jet hole. DETAILED DESCRIPTION

[0023] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0024] Reference Figure 1-7 As shown, a drone cable entanglement prevention device comprises a base 1 and a retracting mechanism 2, wherein a pair of fixing plates 11 are mounted on the base 1, a main shaft 12 is connected between the pair of fixing plates 11, a cable drum 13 is rotatably connected to the main shaft 12, a cable body 14 is wound around the cable drum 13, the retracting mechanism 2 is mounted on the main shaft 12 and is used to release and recycle the cable body 14, and an auxiliary mechanism 3 is provided on the base 1 for determining the state of the cable body 14 and assisting in the retracting and releasing of the cable body 14; The retracting and releasing mechanism comprises a first rotating sleeve 22 and a second rotating sleeve 23, wherein the first rotating sleeve 22 and the second rotating sleeve 23 are respectively connected to the two ends of the main shaft 12 coaxially for rotation, the first rotating sleeve 22 and the second rotating sleeve 23 are hexagonal prism-shaped structures, and a sliding sleeve 24 is provided on each of the first rotating sleeve 22 and the second rotating sleeve 23 for sliding, a first friction disc 221 is coaxially connected to the sliding sleeve 24 on the side close to the first rotating sleeve 22, and a second friction disc 231 is coaxially connected to the sliding sleeve 24 on the side close to the second rotating sleeve 23. The two sliding sleeves 24 are both coaxially rotatably connected with a rotating ring 241, and the two rotating rings 241 are both connected with a connecting plate 252. The top of a pair of fixed plates 11 is connected with a top plate 15, and the bottom of the top plate 15 is connected with a fixed cylinder 25. Both ends of the fixed cylinder 25 are sealed and slidably connected with a sliding rod 251, and the two ends of the sliding rod 251 are respectively connected to the top of the two connecting plates 252. The first rotating sleeve 22 and the second rotating sleeve 23 are also provided with a power component for driving the cable drum 13 to rotate.

[0025] In this embodiment, the power assembly includes a motor 21, which is installed on the fixed plate 11. A pair of bottoms of the fixed plates 11 are rotatably connected to a rotating shaft 26. The output shaft of the motor 21 is coaxially connected to the rotating shaft 26. A small gear 223 and a driving wheel 232 are coaxially connected to the rotating shaft 26. A large gear 222 is coaxially connected to the first rotating sleeve 22, and the large gear 222 is meshed with the small gear 223. A driven wheel 233 is coaxially connected to the second rotating sleeve 23, and the driving wheel 232 and the driven wheel 233 are jointly sleeved with a transmission belt 234.

[0026] In this embodiment, the auxiliary mechanism 3 includes a mounting column 31 and an air pump 33. The mounting column 31 is mounted on the base 1. A mounting groove 311 is provided on the top of the mounting column 31. Two guide wheels 32 are rotatably connected in the mounting groove 311 through two pairs of connecting shafts 321. An annular guide groove 322 is provided on the two guide wheels 32 for guiding the cable body 14 to pass through. The air pump 33 is mounted on the top plate 15. The air outlet of the air pump 33 is connected to an air supply pipe 34. The air supply pipe 34 is connected to a first air delivery pipe 341 and a second air delivery pipe 342. The first air delivery pipe 341 is connected to a second air delivery pipe 342. The ends of the first and second air pipes 341 and 342 away from the air supply pipe 34 are connected to the two ends of the fixed cylinder 25 respectively. The middle position of the slide rod 251 is connected with a piston block 35. The piston block 35 is sealed and slidably connected with the inner wall of the fixed cylinder 25. The two ends of the slide rod 251 are sleeved with first springs 351. The two ends of the first springs 351 are connected with the inner wall of the piston block 35 and the fixed cylinder 25. The two ends of the fixed cylinder 25 are connected with the first air pipe 36 and the second air pipe 37 respectively. The first and second air pipes 341 and 342 are provided with electromagnetic valves. The mounting column Two mounting rods 38 are connected to one side of the mounting plate 31 away from the fixing plate 11. The two mounting rods 38 are respectively located at the upper and lower sides of the mounting groove 311. A sliding groove 381 is provided at one end of each mounting rod 38 away from the mounting column 31. A slider 382 is slidably connected in the sliding groove 381. One end of each slider 382 located outside the sliding groove 381 is connected to a detection rod 383. A second spring 384 is provided in each sliding groove 381. The two ends of the second spring 384 are respectively connected to the slider 382 and the groove wall of the sliding groove 381. Pressure sensors are provided on the two detection rods 383. The pressure sensor on the detection rod 383 near the top is electrically connected to the solenoid valve in the first gas pipe 341. When the pressure sensor on the detection rod 383 near the top is pressurized, the solenoid valve in the first gas pipe 341 is controlled to open. The pressure sensor on the detection rod 383 near the bottom is electrically connected to the solenoid valve in the second gas pipe 342. When the pressure sensor on the detection rod 383 near the bottom is pressurized, the solenoid valve in the second gas pipe 342 is controlled to open. The two pressure sensors are electrically connected to the control circuit of the air pump 33. When any pressure sensor is pressurized, the air pump 33 is controlled to open.

[0027] In this embodiment, a cavity 323 is formed in each guide wheel 32, and a plurality of air outlet holes 324 are formed in a circular array in the guide groove 322 of each guide wheel 32 to communicate with the cavity 323. An air guide groove 325 is formed on a connecting shaft 321 on each guide wheel 32 to communicate with the cavity 323, and the two air guide grooves 325 on the two connecting shafts 321 are connected to the first air guide pipe 36.

[0028] In this embodiment, the mounting column 31 is located at the mounting groove 311 and is connected to a cleaning ring 39 close to the mounting rod 38. An annular cavity 391 is provided in the cleaning ring 39. The annular cavity 391 of the cleaning ring 39 is sealed and connected to the second air guide tube 37. The inner ring surface of the cleaning ring 39 is provided with a plurality of inclined jet holes 392 in an annular array and connected to the annular cavity 391.

[0029] In this embodiment, the diameter of the first air pipe 36 is smaller than the diameter of the first air pipe 341, and the diameter of the second air pipe 37 is smaller than the diameter of the second air pipe 342, that is, when the first air pipe 341 or the second air pipe 342 is opened to supply air, due to the influence of the pipe diameter, the air pressure at the air supply end of the fixed cylinder 25 will be greater than the air pressure at the non-air supply end, which will push the piston block 35 to slide toward the non-air supply end, and the reduction in pipe diameter will increase the air flow speed entering the first air pipe 36 and the second air pipe 37, and the air ejected from the air outlet 324 and the jet hole 392 has a certain impact.

[0030] In this embodiment, the transmission ratio between the large gear 222 and the small gear 223 is 1:10, and the transmission ratio between the driving wheel 232 and the driven wheel 233 is 10:1. Through transmission, the first friction plate 221 and the second friction plate 231 have the same rotation speed but opposite directions.

[0031] The working process and principle of the present invention are as follows: When in use, the cable body 14 is pulled out from the cable drum 13 and passes through the guide groove 322 and the cleaning ring 39 between the two guide wheels 32 in sequence, and is connected to the drone. After turning on the motor 21, the staff controls the drone to fly.

[0032] When the drone flies upward or away from the device, the cable body 14 will be pulled upward and contact the detection rod 383 above, generating a certain amount of extrusion. After the pressure sensor on the detection rod 383 is pressurized, it will control the solenoid valve in the first air pipe 341 to open and simultaneously control the air pump 33 to start working. The air pump 33 will input air into the fixed cylinder 25 through the air supply pipe 34 and the first air pipe 341. Due to the relationship between the pipe diameters, the air pressure of the fixed cylinder 25 at one end of the first air pipe 341 will increase, pushing the piston block 35 to slide right, and at the same time driving the sliding rod 251 to slide right together, so that the connecting rod 252 pushes the sliding sleeve 24 to move right, so that the second friction disk 231 fits the side of the cable cylinder 13, and the motor The power output by 21 will drive the second friction disk 231 to rotate counterclockwise together with the cable drum 13 through the belt drive, so that the cable drum 13 releases the cable body 14 to meet the flight needs of the drone. At the same time, the air input into the fixing cylinder 25 from the first air supply pipe 341 will enter the cavity 323 through the first air guide pipe 36 and the air guide groove 325, and then be ejected through multiple air outlet holes 324 to spray air into the gap between the guide wheel 32 and the cable body 14, thereby reducing the friction force on the cable body 14 and reducing the pulling force of the drone on the cable body 14. On the one hand, it prevents the drone from being separated from the cable body 14 due to excessive pulling force, and on the other hand, the reduction of pulling force can increase the service life of the cable body 14.

[0033] When the drone is returning or flying close to the device, the length of the cable body 14 between the drone and the device will be too long, and the excess cable body 14 will sag and squeeze the detection rod 383 below. After the pressure sensor on the detection rod 383 is pressurized, it will control the solenoid valve in the second air pipe 342 to open, and the air pump 33 will input air into the fixed cylinder 25 through the second air pipe 342. The air pressure of the fixed cylinder 25 at one end of the second air pipe 342 will increase, pushing the piston block 35 to slide left, so that the first friction plate 221 fits the side of the cable cylinder 13, and the motor 21 outputs The power output will drive the cable drum 13 to rotate clockwise through the gear transmission, and the excessively long cable body 14 will be recovered and wound to prevent the excess cable body 14 from falling on the ground and being dragged, worn, and entangled. At the same time, the air input into the fixed cylinder 25 from the second air supply pipe 342 will enter the annular cavity 391 of the cleaning ring 39 through the second air guide pipe 37, and then be ejected through multiple air jet holes 392 to spray the surface of the recovered cable body 14 at an inclined angle, effectively removing dust and other impurities adhered to the surface of the cable body 14, and ensuring the cleanliness of the recovered cable body 14.

[0034] When the drone stops at a designated position, the cable body 14 is in a suitable stretched state and will not contact the upper and lower detection rods 383. At this time, the air pump 33 is in an unstarted state and no longer supplies air. The piston block 35 in the fixed cylinder 25 returns to the middle position under the action of the first spring 351. At this time, the first friction disk 221 and the second friction disk 231 are not in contact with the cable drum 13. The cable drum 13 is in a stagnant state and does not retract or release the cable body 14.

[0035] It is known from common technical knowledge that the present invention can be implemented by other embodiments that do not deviate from its spirit or essential features. Therefore, the above disclosed embodiments are only illustrative in all respects and are not exclusive. All changes within the scope of the present invention or within the scope equivalent to the present invention are included in the present invention.

Claims

1. A UAV cable anti-entanglement device, characterized in that: The invention comprises a base (1) and a retractable mechanism (2), wherein a pair of fixing plates (11) are mounted on the base (1), a main shaft (12) is connected between the pair of fixing plates (11), a cable drum (13) is rotatably connected to the main shaft (12), a cable body (14) is wound around the cable drum (13), the retractable mechanism (2) is mounted on the main shaft (12) and is used to release and retract the cable body (14), and an auxiliary mechanism (3) is provided on the base (1) and is used to determine the state of the cable body (14) and assist in the retraction and extension of the cable body (14); The retractable mechanism comprises a first rotating sleeve (22) and a second rotating sleeve (23), the first rotating sleeve (22) and the second rotating sleeve (23) being respectively connected to two ends of the main shaft (12) in a coaxial rotational manner, the first rotating sleeve (22) and the second rotating sleeve (23) being hexagonal prism-shaped structures, the first rotating sleeve (22) and the second rotating sleeve (23) being provided with a sliding sleeve (24) on a sliding sleeve (24) on a side close to the first rotating sleeve (22) being coaxially connected to a first friction disk (221), and the sliding sleeve (24) on a side close to the second rotating sleeve (23) being coaxially connected to a second friction disk (231). The two sliding sleeves (24) are coaxially rotatably connected to a rotating ring (241), and the two rotating rings (241) are connected to a connecting plate (252). The top of a pair of fixed plates (11) is connected to a top plate (15), and the bottom of the top plate (15) is connected to a fixed cylinder (25). Both ends of the fixed cylinder (25) are sealed and slidably connected to sliding rods (251), and the two ends of the sliding rod (251) are respectively connected to the top ends of the two connecting plates (252). The first rotating sleeve (22) and the second rotating sleeve (23) are also provided with a power assembly for driving the cable drum (13) to rotate.

2. The UAV cable anti-entanglement device according to claim 1, characterized in that: The power assembly comprises a motor (21), the motor (21) being mounted on the fixed plate (11), a pair of bottoms of the fixed plates (11) being rotatably connected to a rotating shaft (26), an output shaft of the motor (21) being coaxially connected to the rotating shaft (26), a small gear (223) and a driving wheel (232) being coaxially connected to the rotating shaft (26), a large gear (222) being coaxially connected to the first rotating sleeve (22), the large gear (222) being meshed with the small gear (223), a driven wheel (233) being coaxially connected to the second rotating sleeve (23), and a transmission belt (234) being provided on the driving wheel (232) and the driven wheel (233).

3. The UAV cable anti-entanglement device according to claim 1, characterized in that: The auxiliary mechanism (3) comprises a mounting column (31) and an air pump (33), wherein the mounting column (31) is mounted on the base (1), a mounting groove (311) is provided on the top of the mounting column (31), two guide wheels (32) are rotatably connected in the mounting groove (311) via two pairs of connecting shafts (321), and an annular guide groove (322) is provided on the two guide wheels (32) for guiding the cable body (14) to pass through, and the air pump (33) is mounted on the top plate (15), and an air outlet of the air pump (33) is connected to an air supply pipe (34), and the air supply pipe (34) is connected to a first An air delivery pipe (341) and a second air delivery pipe (342), wherein one end of the first air delivery pipe (341) and the second air delivery pipe (342) away from the air supply pipe (34) are respectively connected to two ends of the fixed cylinder (25), a piston block (35) is connected to the middle position of the sliding rod (251), and the piston block (35) is slidably connected to the inner wall of the fixed cylinder (25), and first springs (351) are sleeved on both ends of the sliding rod (251), and the two ends of the first springs (351) are connected to the piston block (35) and the inner wall of the fixed cylinder (25), and the two ends of the fixed cylinder (25) A first air guide pipe (36) and a second air guide pipe (37) are respectively connected, and solenoid valves are arranged in the first air delivery pipe (341) and the second air delivery pipe (342). Two mounting rods (38) are connected to the side of the mounting column (31) away from the fixing plate (11), and the two mounting rods (38) are respectively located at the upper and lower sides of the mounting groove (311), and a sliding groove (381) is formed at one end of each mounting rod (38) away from the mounting column (31), and a sliding block (382) is slidably connected in the sliding groove (381), and each sliding block (382) is connected to a detection device at one end located outside the sliding groove (381). A measuring rod (383), each of the slide grooves (381) is provided with a second spring (384), the two ends of the second spring (384) are respectively connected to the slider (382) and the groove wall of the slide groove (381), and pressure sensors are provided on the two measuring rods (383). The pressure sensor on the measuring rod (383) near the top is electrically connected to the electromagnetic valve in the first air supply pipe (341), and the pressure sensor on the measuring rod (383) near the bottom is electrically connected to the electromagnetic valve in the second air supply pipe (342). The two pressure sensors are electrically connected to the control circuit of the air pump (33).

4. The UAV cable anti-entanglement device according to claim 3, characterized in that: A cavity (323) is provided in each guide wheel (32); a plurality of air outlet holes (324) are provided in a circular array in the guide groove (322) of each guide wheel (32) and are communicated with the cavity (323); a connecting shaft (321) on each guide wheel (32) is provided with an air guide groove (325) which is communicated with the cavity (323); and two air guide grooves (325) on two connecting shafts (321) are connected to a first air guide pipe (36).

5. The UAV cable anti-entanglement device according to claim 3, characterized in that: The mounting column (31) is located at the mounting groove (311) and is connected to a cleaning ring (39) on one side close to the mounting rod (38); an annular cavity (391) is provided in the cleaning ring (39); the annular cavity (391) of the cleaning ring (39) is sealedly connected to the second air guide pipe (37); and the inner annular surface of the cleaning ring (39) is provided with a plurality of inclined air injection holes (392) in the form of an annular array and are in communication with the annular cavity (391).

6. The UAV cable anti-entanglement device according to claim 3, characterized in that: The diameter of the first air guide pipe (36) is smaller than the diameter of the first air delivery pipe (341), and the diameter of the second air guide pipe (37) is smaller than the diameter of the second air delivery pipe (342).

7. The UAV cable anti-entanglement device according to claim 2, characterized in that: The transmission ratio between the large gear (222) and the small gear (223) is 1:10, and the transmission ratio between the driving wheel (232) and the driven wheel (233) is 10:1.

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