An automatic unhooking drone winch

Abstract

The present invention discloses an automatically unhooking UAV winch, comprising a winch body and a hook; the winch body comprises a frame device, a drum device, a wire arrangement device, and a safety device; the present invention solves the problems of the prior art such as uncontrollable tension, inability to transport heavy objects, inability to automatically unhook, and too short a rope; the present invention has high safety and a simple structure, can easily transport heavy loads, the drum can accommodate up to 30 meters of rope, and has automatic wire arrangement, can adjust the speed and tension at any time according to needs, and automatically unhook without manual operation, thus saving time, effort, and electricity.

Description

Technical Field

[0001] The present invention relates to the field of hoisting technology, in particular to an automatically unhooking unmanned aerial vehicle winch. Background Art

[0002] At present, drones are widely used in the transportation of materials. The functions of the existing drone winches are relatively simple, and the tension cannot be controlled, resulting in the inability to well control the change in length; most of the load capacities currently in use are below 5Kg, which are not suitable for the transportation of heavy materials; the existing winches are generally too short and are not suitable for the delivery of materials in some special occasions; and the hooking and unhooking actions of the device need to be executed by controlling the servo, which consumes part of the energy of the drone battery, which will have a great impact on drones with relatively high requirements for flight time; the minimum safe distance for the retraction and release of the rope cannot be set, and the length of the line is unlimited, which may cause damage to the device, thereby affecting the flight safety of the drone. Therefore, there is still room for improvement in these aspects.

[0003] Patent publication number CN214733433U discloses a novel fully automatic tension reel device for tethered drones, relating to the field of drone flight. The invention comprises a device frame, a wire routing device, a reel device, and a tension control device. A wire routing arm is positioned above the device frame, with a wire threading hole provided on the arm. The arm is connected to a slide rail via a lead screw. The slide rail is mounted on the frame, one side of the slide rail is connected to a stepper motor, and a synchronous pulley on the encoder side is connected to a circular synchronous pulley on the winding reel via a circular synchronous belt. The reel device comprises a winding reel, a wire threading tube, and a conductive slip ring. The winding reel and circular synchronous pulley are connected via a main shaft. However, the invention has insufficient load capacity, and both hooking and unhooking operations require the control of a servo, consuming some energy from the drone's battery. This can have a significant impact on drones with high flight time requirements. Summary of the Invention

[0004] In order to solve the above technical deficiencies, the present invention provides an automatically unhooking UAV winch.

[0005] The technical solution adopted in the present invention is:

[0006] An automatically unhooking UAV winch comprises a winch body and a hook connected to the winch body;

[0007] The hoist body includes a frame device connected to the drone;

[0008] The winch body also includes a drum device connected to the inside of the frame device, and the drum device includes a drum, a lifting rope, an inner cover 1, an inner cover 2, an input shaft, a driving device, a connecting column 1, a connecting column 2, an end cover 1, an end cover 2, a bearing 1, a bearing 2, and a shaft gear. The drum is connected to the lifting rope, and the input shaft passes through the drum. The driving device drives the input shaft to drive the drum to rotate. The inner cover 1 and the inner cover 2 are respectively sleeved on both ends of the input shaft and do not rotate with the input shaft. The connecting column 1 and the connecting column 2 pass through the edges of the end cover 1 and the end cover 2. The end cover is sleeved on the inner cover 1, and the end cover 2 is sleeved on the inner cover 2. The end cover 1 passes through the input shaft through the bearing 1 and is sleeved on the inner cover 2. The end cover 1 passes through the input shaft through the bearing 2 and is sleeved on the inner cover 1. The shaft gear is fixed to the input shaft passing through the inner cover 1.

[0009] The winch body also includes a wire-laying device connected to the drum device, and the wire-laying device includes a twisted shaft sleeve, a twisted shaft, a wire-laying device, a wire-laying device gear shaft, a wire-laying large gear, and a twisted shaft gear. The two ends of the twisted shaft are respectively fixed on the edges of the inner cover one and the inner cover two, and the twisted shaft sleeve is sleeved on the outside of the twisted shaft. The wire-laying device is sleeved on the twisted shaft and connected to the lifting rope. The twisted shaft gear is engaged with the wire-laying large gear. The twisted shaft follows the rotation of the input shaft through the engagement of the shaft gear with the wire-laying large gear to drive the wire-laying device to move back and forth in the twisted shaft sleeve.

[0010] The winch body also includes a safety device provided on the drum device, and the safety device includes a limiter, a positioner, a potentiometer fixed end cover, a positioner gear shaft, bearing three, a positioner large spur gear, spur gear one, spur gear two, and spur gear three. The limiter is below the drum and the power is cut off when the object contacts it. The positioner is fixed to the side of the drum device. The potentiometer fixed end cover passes through the input shaft sleeve on the end cover one through bearing three. The positioner large spur gear is located on the potentiometer fixed end cover and is connected to the locator. The spur gear one and spur gear two are located on the locator gear shaft. The spur gear three is located on the cable arranger gear shaft. The spur gear three is engaged with the spur gear two. The locator confirms the retraction and release position of the lifting rope through the transmission connection between the gear on the locator gear shaft and the gear on the cable arranger gear shaft and the shaft gear. The locator controls the rotation of the motor;

[0011] The hook is connected to the winch body through a lifting rope, and the hook includes a lifting ring connected to the lifting rope, a four-bar linkage connected to the lifting ring, a limiting device arranged on the four-bar linkage, and a reset torsion spring arranged on the four-bar linkage. The four-bar linkage includes a left connecting arm and a right connecting arm hinged to the lifting ring at one end, and a right hook arm and a left hook arm hinged to the other end of the left connecting arm and the right connecting arm respectively. The limiting device includes a limiting rod that can only rotate counterclockwise, a limiting column arranged below the limiting rod, and a push rod arranged on the left connecting arm that can push the limiting rod to rotate counterclockwise.

[0012] Furthermore, the driving device is a DC brushed motor, which provides a power source for the reel, and the internal gear is a worm gear structure with a self-locking function.

[0013] Furthermore, the limiter includes a U-shaped ring and a limit switch at the root of the U-shaped ring. The lifting rope passes through the U-shaped ring, and the limit switch can cut off the power supply to the reel.

[0014] Furthermore, the rack device includes a fixed bracket, a quick-release plate, a connecting seat and a mounting plate. The fixed bracket is fixed to the reel device through the connecting seat. The fixing bracket is equipped with a mounting plate, which is fixed to the bottom load area of ​​the drone through the quick-release plate.

[0015] Furthermore, the left hook arm and the right hook arm, the left connecting arm and the right connecting arm are equal in size, and the left hook arm and the right hook arm are in a hook shape.

[0016] Furthermore, one end of the limiting rod is connected to the right hook arm through a rotating shaft.

[0017] Furthermore, a one-way bearing is fixed on the rotating shaft, and the one-way bearing can only rotate counterclockwise.

[0018] Furthermore, an elastic screw is installed at the end of the push rod, which can push the limiting rod to rotate counterclockwise.

[0019] Furthermore, one end of the left connecting arm and the right connecting arm are hinged to the lifting ring through a fixing seat.

[0020] Furthermore, one end of the left connecting arm and one end of the right connecting arm are hinged to the fixing seat, the other end of the left connecting arm and one end of the right hook arm, the other end of the right connecting arm and the left hook arm, and the intersection of the left hook arm and the right hook arm are all hinged through pins.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] (1) The present invention is simple to operate and highly safe. It can easily transport heavy materials weighing less than 20 kg. The reel has a large capacity and can accommodate a maximum of 30 meters of rope, which can adapt to the delivery of materials in some special occasions. It also has automatic line arrangement and can adjust the speed at any time according to needs during the lowering process, which is conducive to improving the delivery accuracy of the lowered materials. When the rope reaches the set length, it can automatically stop, which can not only reduce the labor intensity of the pilot, but also prevent accidents that damage the device. During the winding process, the double insurance composed of the positioner and the limiter can ensure the absolute safety of the device.

[0023] (2) No need for steering gear control and simple operation, high safety, and automatic unhooking without manual operation when landing. It has the characteristics of simple structure, low cost, convenient operation and strong practicality. The present invention is installed on a drone. Before the drone takes off, the materials are first hung on the hook through a sling or a rope through manual operation. At this time, the left and right hook arms are closed into a loop. After the drone takes off, due to the weight of the materials, the slings on the materials are firmly fixed on the hook, and there is no unhooking. After arriving at the destination, the drone descends, and the moment the materials land, the left and right hook arms open, and the slings on the materials are automatically unhooked, without the need for manual operation, which saves time and effort and is safe. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the structure of an automatically unhooked UAV winch;

[0025] Figure 2 This is a structural diagram of the winch body of an automatically unhooking UAV winch;

[0026] Figure 3 This is a structural diagram of the winch body of an automatically unhooking UAV winch from another perspective;

[0027] Figure 4 This is an exploded view of the partial structure of the winch body of an automatically unhooking UAV winch;

[0028] Figure 5 This is an exploded view of the partial structure of the winch body of an automatically unhooking UAV winch from another perspective;

[0029] Figure 6 This is a schematic diagram of the front structure of a UAV winch hook with automatic unhooking;

[0030] Figure 7 This is a schematic diagram of the three-dimensional structure of a UAV winch hook with automatic unhooking;

[0031] Figure 8 This is a schematic diagram of the partial structure of an automatically unhooking UAV winch;

[0032] Figure 9 This is a schematic diagram of the working status of an automatically unhooking UAV winch.

[0033] Figure: 1. Motor; 2. Quick-release plate; 3. Fixed bracket; 4. Connecting seat; 5. Connecting sleeve; 6. Stopper; 7. Cap nut; 8. Positioner; 9. Potentiometer fixed end cap; 10. End cap 1; 11. Positioner gear shaft; 12. Spur gear 1; 13. Spur gear 3; 14. Shaft gear; 15. Reel; 16. Bearing 1; 17. End cap 2; 18. Wire arrangement gear shaft; 19. Spur gear 2; 20. Wire arrangement large gear; 21. Twist shaft; 22. Wire arrangement; 23. Twist shaft sleeve; 24. Bearing 3; 25. Positioner large gear; 26. Bearing 2 27. Inner cover one; 28. Connecting column one; 29. ​​Inner cover two; 30. Twist shaft gear; 31. Input shaft; 32. Connecting column two; 33. Lifting ring; 34. Fixed seat; 35. Pin; 36. Left connecting arm; 37. Push rod; 38. Limit rod; 39. Limiting column; 40. Elastic screw; 41. Left hook arm; 42. Right connecting arm; 43. Right hook arm; 44. Torsion spring; 45. One-way bearing; 46. Rotating shaft; 47. Winch body; 48. Hook; 49. Frame device; 50. Reel device; 51. Wire arrangement device; 52. Safety device; 53. Lifting rope. DETAILED DESCRIPTION

[0034] In order to clearly illustrate the technical features of this solution, the present invention is described in detail below through specific implementation methods and in conjunction with the accompanying drawings. In the following description, many specific details are described to facilitate a full understanding of the present application. However, the present application can also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present application is not limited by the specific embodiments disclosed below. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0035] Example 1

[0036] See also Figures 1 to 8 The present invention provides an embodiment: an automatically unhooking UAV winch, including a winch body 47 and a hook 48.

[0037] The hoist body 47 includes a frame device 49 connected to the drone, and the frame device 49 fixes the drum device 50 and the safety device 52.

[0038] The winch body 47 also includes a drum device 50 fixed to the frame device 49, and the drum device 50 includes a drum 15, a lifting rope 53, an inner cover 27, an inner cover 29, an input shaft 31, a driving device 1, a connecting column 28, a connecting column 232, an end cover 10, an end cover 17, a bearing 16, a bearing 26, and a shaft gear 14. The drum 15 is connected to the lifting rope 53, and the input shaft 31 passes through the drum 15. The driving device 1 drives the input shaft 31 to drive the drum 15 to rotate. The inner cover 27 and the inner cover 29 are respectively mounted on both ends of the input shaft 31 and do not rotate with the input shaft 31. The connecting column 1 28 and the connecting column 2 32 pass through the edges of the end cover 10 and the end cover 2 17. The end cover 10 is mounted on the inner cover 27, the end cover 2 17 and the inner cover 2 29, and both pass through the connecting column 1 28 and the connecting column 2 32. The end cover 17 passes through the input shaft 31 through the bearing 16 and is mounted on the inner cover 29. The end cover 10 passes through the input shaft 31 through the bearing 26 and is mounted on the inner cover 27. The shaft gear 14 is fixed on the input shaft 31 passing through the inner cover 27.

[0039] The hoist body 47 further includes a wire arrangement device 51 connected to the reel device 50, and the wire arrangement device 51 includes a twisted shaft sleeve 23, The twist shaft 21, the cable arranger 22, the cable arranger gear shaft 18, the cable arranger gear 20 and the twist shaft gear 30, the two ends of the twist shaft 21 are respectively fixed on the edges of the inner cover 1 27 and the inner cover 2 29, the twist shaft sleeve 23 is sleeved on the outside of the twist shaft 21, the cable arranger 22 is sleeved on the twist shaft 21 and is connected to the lifting rope 53, the twist shaft 21 follows the rotation of the input shaft 31 to drive the cable arranger 22 to move back and forth in the twist shaft sleeve 23, driven by the cable arranger 22, the lifting rope 53 will move back and forth regularly and evenly around the reel, thereby avoiding the situation where the lifting ropes 53 are stuck to each other, the twist shaft gear 30 is engaged with the cable arranger gear 20, and the twist shaft 21 is engaged with the cable arranger gear 20 through the shaft gear 14 to follow the rotation of the input shaft 31 to drive the cable arranger 22 to move back and forth in the twist shaft sleeve 23.

[0040] The hoist body 47 also includes a safety device 52 provided on the drum device 50, the safety device 52 includes a limiter 6, a positioner 8 fixed beside the drum device, a potentiometer fixed end cover 9, a positioner gear shaft 11, a bearing three 24, a positioner large gear 25, a spur gear one 12, a spur gear two 19, and a spur gear three 13. The limiter 6 is provided below the drum 15 and is powered off when contacted by an object. The positioner 8 is fixed beside the drum device 50. The positioner 8 is connected to the input shaft 31 to confirm the retracted and extended position of the lifting rope 53. The positioner 8 controls the drive The driving device 1 rotates, the potentiometer fixed end cover 9 passes through the input shaft 31 through the bearing three 24 and is sleeved on the end cover 10, the positioner large gear 25 is located at the potentiometer fixed end cover 9 and is connected to the positioner 8, the spur gear 12 and the spur gear 2 19 are located on the positioner gear shaft, the spur gear three 13 is located on the cable arranger gear shaft 18, the spur gear three 13 is engaged with the spur gear two, and the positioner 8 confirms the retracted and extended position of the hanging rope 53 through the transmission connection between the gear on the locator gear shaft 11 and the gear on the cable arranger gear shaft 18 and the shaft gear 14.

[0041] The hook 48 is connected to the winch body 47 through the lifting rope 53. The hook 48 includes a lifting ring 33 connected to the lifting rope 53, a four-bar linkage connected to the lifting ring 33, a limiting device arranged on the four-bar linkage, and a reset torsion spring 44 arranged on the four-bar linkage. The four-bar linkage includes a left connecting arm 36 and a right connecting arm 40, one end of which is hinged to the lifting ring 33, and a left hook arm 41 and a right hook arm 43, which are respectively hinged to the other ends of the left connecting arm 36 and the right connecting arm 40. The limiting device includes a limiting rod 38 that can only rotate counterclockwise, a limiting column 39 arranged below the limiting rod 38, and a push rod 37 arranged on the left connecting arm 36 and capable of pushing the limiting rod 38 to rotate counterclockwise.

[0042] Specific implementation methods:

[0043] When materials need to be transported, first place the sling on the cargo into the hook 48, then hold the left and right hook arms 41 and 43 with one hand and slowly form a closed loop, then rotate the limit rod 38 counterclockwise so that it contacts the limit column 39. At this time, you can release your hand. When the drone takes off and lifts the cargo, under the action of the gravity of the cargo, the left and right hooks / 41 and 43 continue to retract inward, and at this time the limit rod 38 passes over the limit column 39. When the cargo is lifted, the pilot issues an instruction by controlling the remote control. After receiving the instruction, the driving device 1 drives the reel 15 to rotate for winding. While the reel 15 rotates for winding, the driving device 1 drives the reel 15 to rotate through the input shaft 31, thereby driving the shaft gear 14 to rotate, and the shaft gear 14 then drives the large wire-trapping gear 20 to rotate. Since the large wire-trapping gear 20 is a double-layer gear, its other layer of teeth drives the twist shaft gear 30 to rotate, thereby driving the wire-trapping device 22 on the twist shaft 21 to reciprocate left and right, thereby evenly storing the lifting rope 53 on the reel 15; the driving device 1 drives the reel 15 to rotate through the input shaft 31, and the twist shaft 21 follows the input shaft 31 to rotate, driving the wire-trapping device 22 to reciprocate left and right on the twist shaft sleeve 23, thereby evenly storing the lifting rope 53 on the reel 15; at the same time, the speed of winding and releasing the lifting rope 53 can be increased or decreased by operating the remote control stick. The safety device 52 is an extreme protection device for the entire mechanism. Through the positioner 8, a certain length of safety distance can be set at both ends of the rope 53 to prevent the impact of materials on the entire device and damage to itself; the driving device 1 drives the reel to rotate through the input shaft 31, thereby driving the shaft gear 14 to rotate, and the shaft gear 14 then drives the cable traversing gear 20 to rotate, and the spur gear 3 13 on the same axis as the cable traversing gear 20 then drives the spur gear 2 19 to rotate, and the spur gear 1 12 on the same axis as the spur gear 2 19 then drives the positioner gear 25 to rotate, so that the positioning confirms the retracted and extended length of the rope 53 on the reel 15 When the lifting rope 53 reaches the set position, the positioner 8 will send a signal to the control panel, and the control panel will then issue a command to stop the rotation of the driving device 1, thereby achieving the purpose of protecting the entire device and the material itself. The limiter 6 serves as a second level of protection in the event of a failure of the safety device 52. When the safety device 52 fails, the lifting rope 53 will continue to be retracted. When the object hits the U-shaped ring on the limiter 6, the limit switch at the root of the U-shaped ring is triggered, and the limit switch cuts off the power supply to the reel 15, thereby avoiding the object from being damaged or the reel 15 from being damaged, thus playing a protective role.

[0044] When the drone reaches the designated point, it descends, and the retracting and deploying mechanism's drive unit 1 reverses, releasing the sling 53. The instant the cargo touches the ground, the weight of the hook disappears, and the left and right hook arms 41, 43 automatically open under the action of the torsion spring 44, freeing the cargo's sling from the hook. This entire unhooking process requires no manual intervention, saving time and effort while remaining safe and reliable.

[0045] Example 2

[0046] See also Figures 1 to 8 The present invention provides an embodiment: an automatically unhooking UAV winch, including a winch body 47 and a hook 48.

[0047] The hoist body 47 includes the frame device 49, the drum device 50, the wire arrangement device 51, and the safety device 52 described in Example 1.

[0048] Furthermore, the limiter 6 includes a U-shaped ring and a limit switch at the root of the U-shaped ring. The suspension rope 53 passes through the U-shaped ring. The limit switch can supply power around the cutting drum 15.

[0049] Example 3

[0050] See also Figures 1 to 8 The present invention provides an embodiment: an automatically unhooking UAV winch, including a winch body 47 and a hook 48.

[0051] The hoist body 47 includes the frame device 49, the drum device 50, the wire arrangement device 51, and the safety device 52 described in Example 1.

[0052] Furthermore, the rack device 49 includes a fixed bracket 3, a quick-release plate 2, a connecting seat 4, and a mounting plate. The fixed bracket 3 is fixed to the reel device 50 through the connecting seat 4. The fixed bracket 3 is equipped with a mounting plate, which is fixed to the bottom load area of ​​the drone through the quick-release plate 2.

[0053] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims rather than the foregoing description. It is intended that all variations within the meaning and range of equivalents of the claims be embraced herein, and any reference signs in the claims should not be construed as limiting the claims to which they relate.

Claims

1. An automatic unhooking UAV winch, characterized in that: It includes a hoist body and a hook connected to the hoist body; The winch body includes a frame device connected to the drone, and a drum device arranged inside the frame device, the drum device includes a drum, a lifting rope, an inner cover 1, an inner cover 2, an input shaft, a driving device, a connecting column 1, a connecting column 2, an end cover 1, an end cover 2, a bearing 1, a bearing 2, and a shaft gear, the drum is connected to the lifting rope, the input shaft passes through the drum, the driving device drives the input shaft to drive the drum to rotate, the inner cover 1 and the inner cover 2 are respectively sleeved on both ends of the input shaft and do not rotate with the input shaft, the connecting column 1 and the connecting column 2 pass through the edges of the end cover 1 and the end cover 2, the end cover is sleeved on the inner cover 1, the end cover 2 is sleeved on the inner cover 2, and the end cover 1 and the end cover 2 both pass through the connecting column 1 and the connecting column 2, the end cover 2 passes through the input shaft through the bearing 1 and is sleeved on the inner cover 2, the end cover 1 passes through the input shaft through the bearing 2 and is sleeved on the inner cover 1, and the shaft gear is fixed to the input shaft passing through the inner cover 1; The winch body also includes a wire arranging device connected to the drum device, and the wire arranging device includes a twisted shaft sleeve, a twisted shaft, a wire arranging device, a wire arranging device gear shaft, a wire arranging large gear, and a twisted shaft gear. The two ends of the twisted shaft are respectively fixed to the edges of the inner cover one and the inner cover two, and the twisted shaft sleeve is sleeved on the outside of the twisted shaft. The wire arranging device is sleeved on the twisted shaft and connected to the lifting rope. The twisted shaft gear is engaged with the wire arranging large gear. The twisted shaft follows the rotation of the input shaft through the engagement of the shaft gear with the wire arranging large gear to drive the wire arranging device to move back and forth in the twisted shaft sleeve. The winch body also includes a safety device provided on the drum device, and the safety device includes a limiter, a positioner, a potentiometer fixed end cover, a positioner gear shaft, bearing three, a positioner large gear, a spur gear one, a spur gear two, and a spur gear three. The limiter is below the drum and the power is cut off when the object contacts it. The positioner is fixed on the side of the drum device. The potentiometer fixed end cover passes through the input shaft sleeve on the end cover one through bearing three. The positioner large gear is located on the potentiometer fixed end cover and is connected to the locator. The spur gear one and the spur gear two are located on the locator gear shaft. The spur gear three is located on the wire arrangement gear shaft. The spur gear three is engaged with the spur gear two. The positioner confirms the retraction and release position of the lifting rope through the transmission connection between the gear on the locator gear shaft and the gear on the wire arrangement gear shaft and the shaft gear. The positioner controls the rotation of the motor. The hook is connected to the winch body through a lifting rope, and the hook includes a lifting ring connected to the lifting rope, a four-bar linkage connected to the lifting ring, a limiting device arranged on the four-bar linkage, and a reset torsion spring arranged on the four-bar linkage. The four-bar linkage includes a left connecting arm and a right connecting arm hinged to the lifting ring at one end, and a right hook arm and a left hook arm hinged to the other end of the left connecting arm and the right connecting arm respectively. The limiting device includes a limiting rod that can only rotate in the same direction, a limiting column arranged below the limiting rod, and a push rod arranged on the left connecting arm and rotating in the same direction as the limiting rod.

2. The automatic unhooking UAV winch according to claim 1, characterized in that: The driving device is a DC brushed motor that provides a power source for the reel, and the internal gear is a worm gear structure with a self-locking function.

3. The automatic unhooking UAV winch according to claim 1, characterized in that: The limiter comprises a U-shaped ring and a limit switch at the root of the U-shaped ring. The lifting rope passes through the U-shaped ring, and the limit switch can cut off the power supply to the reel.

4. The automatic unhooking UAV winch according to claim 1, characterized in that: The rack device includes a fixed bracket, a quick-release plate, a connecting seat and a mounting plate. The fixed bracket is fixed to the reel device through the connecting seat. The mounting plate is installed on the fixed bracket and is fixed to the bottom load area of ​​the drone through the quick-release plate.

5. The automatic unhooking UAV winch according to claim 1, characterized in that: The left hook arm and the right hook arm, the left connecting arm and the right connecting arm are equal in size, and the left hook arm and the right hook arm are in a hook shape.

6. The automatic unhooking UAV winch according to claim 1, characterized in that: One end of the limiting rod is connected to the right hook arm through a rotating shaft.

7. The automatic unhooking UAV winch according to claim 6, characterized in that: A one-way bearing is fixed on the rotating shaft, and the one-way bearing can only rotate counterclockwise.

8. The automatic unhooking UAV winch according to claim 1, characterized in that: An elastic screw is installed at the end of the push rod, which can push the limiting rod to rotate counterclockwise.

9. The automatic unhooking UAV winch according to claim 1, characterized in that: One end of the left connecting arm and the right connecting arm are hinged to the lifting ring through a fixing seat.

10. The automatic unhooking UAV winch according to claim 1, characterized in that: The left connecting arm and the right connecting arm are hinged to the fixing seat at one end, the left connecting arm and the right hook arm at the other end, the right connecting arm and the left hook arm at the other end, and the intersection of the left hook arm and the right hook arm are hinged to each other through a pin shaft.

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