An unmanned aerial vehicle hoisting automatic unhooking device

Abstract

The utility model relates to the field of unmanned plane especially, a kind of unmanned plane hoisting automatic unhooker, installation seat is installed on the mounting plate of the bottom of unmanned plane, unhooker is made of two clamping structures, two the clamping structure is connected by the pin joint of top and the lever shaft of bottom, the detachable connection between the pin joint and the installation seat is achieved by fixed assembly;Wherein, two the clamping structure between is equipped with elastic member, the tension adjusting structure between the elastic member and two the clamping structure is equipped, the tension of elastic member is adjusted by tension adjusting structure, prevent too light and nimble hoisting goods because of the case of insufficient self gravity, two clamping structures cannot be driven to close, also prevent the sensitivity of the sensitivity of the reset of two clamping structures by the tension of elastic member being too weak;When hoisting in a certain range to different kinds of goods, the clamping structure can be replaced by fixed assembly in turn and then adapt to different hoisting.

Description

Technical Field

[0001] This utility model relates to the field of unmanned aerial vehicles (UAVs), and in particular to an automatic unhooking device for UAV hoisting. Background Technology

[0002] The drone unhooking device is a key piece of equipment used for drone lifting and transportation. It has an automatic unhooking function and is suitable for various scenarios, such as logistics distribution, agricultural monitoring, and emergency rescue.

[0003] Most unhooking devices use a pair of clamping structures to clamp and lift objects. For example, the prior art Chinese patent announcement number "CN214524407U" discloses a drone throwing unhooking device, which includes a servo motor, a base on the servo motor, fixed seats at the four corners of the upper end of the base, an upper plate on the top of the base, the upper plate being fixed to the base by screws, a steel clamp on the base, a steel shaft rotatably connected to both sides of the steel clamp at the upper end of the base, a gear connected to the servo motor at the center of the tail of the steel clamp, a servo motor arm sleeved on the gear, a spring shaft sleeved on both tails of the steel clamp between the base and the upper plate, the opening of the spring shaft clamping the tail of the steel clamp, and the two apex corners of the spring shaft being sleeved on two fixed seats.

[0004] An automatic unhooking device is disclosed in the prior art as an example of an automatic unhooking device, as disclosed in the Chinese design patent announcement number "CN309216958S".

[0005] In actual operation, the unhooking device uses a pair of steel clamps to hold and fix the lifted items. However, considering that different types of lifted items vary in size, the opening and closing angle of the pair of steel clamps is limited, and the steel clamps and the base are not easy to replace, it can only hold lifted items within a certain range, resulting in poor versatility. Utility Model Content

[0006] The purpose of this invention is to address the shortcomings of existing unhooking devices, namely their poor versatility, and to propose an automatic unhooking device for drone lifting.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] Design an automatic unhooking device for drone lifting. The device is mounted on a mounting plate at the bottom of the drone via a mounting base. The unhooking device consists of two clamping structures connected by a top pin and a bottom lever shaft. The pin and the mounting base are detachably connected by a fixing component.

[0009] An elastic element is provided between the two clamping structures, and a tension adjustment structure is provided between the elastic element and the two clamping structures.

[0010] Furthermore, the fixing component includes two fixing members, and the mounting base is provided with support arms on both sides. The bottom end of the fixing member is rotatably connected to the recessed part of the support arm through a rotating shaft.

[0011] Furthermore, the sidewall of the support arm extends downward to form a relief groove, and a number of corresponding slots are provided between the fixing member and the opposite side of the relief groove, and the diameter of the number of slots gradually decreases along the array direction.

[0012] The pin is engaged in the slot by the relief groove, and the cross-section of the pin is H-shaped.

[0013] Furthermore, a ratchet is fixedly connected to one end of the rotating shaft, and a pawl is rotatably connected to the side of the support arm via a torsion spring. The pawl engages with the ratchet along the unlocking direction of the fixing member.

[0014] Furthermore, the tension adjustment structure includes a first connecting part and a second connecting part. The two clamping structures are respectively provided with a first connecting part and a plurality of second connecting parts on opposite sides. The two ends of the elastic member are respectively hung in the first connecting part and the second connecting part.

[0015] Furthermore, the mounting base and the mounting plate are fixedly connected by fasteners.

[0016] The present invention provides an automatic unhooking device for drone lifting, which has the following advantages: When the two clamping structures are in a weightless state, the lifting items are released under the action of the elastic element. The tension of the elastic element is adjusted by the tension adjustment structure to prevent the lifting items that are too light from failing to drive the two clamping structures to close due to insufficient weight. It also prevents the tension of the elastic element from being too weak and affecting the sensitivity of the two clamping structures to reset.

[0017] When lifting different types of items within a certain range, the clamping structure can be replaced by fixing components to adapt to different objects, which helps to improve versatility. Attached Figure Description

[0018] Fig. 1 This is a schematic diagram of the structure of this utility model;

[0019] Fig. 2 This is a schematic diagram of the tension adjustment structure of this utility model;

[0020] Fig. 3 This is an enlarged view of the structure of the fixing component of this utility model.

[0021] In the diagram: 1. Mounting base; 11. Support arm; 12. Clearance groove; 13. Slot; 2. Mounting plate; 3. Clamping structure; 4. Pin connector; 5. Fixing assembly; 51. Fixing component; 52. Rotating shaft; 53. Ratchet; 54. Pawl; 6. Elastic component; 7. Tension adjustment structure; 71. First connecting part; 72. Second connecting part; 8. Fastener; 9. Lever shaft. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Reference Figs. 1-3 An automatic unhooking device for drone lifting is mounted on a mounting plate 2 at the bottom of the drone via a mounting base 1. The unhooking device consists of two clamping structures 3, which are connected by a top pin 4 and a bottom lever shaft 9. The pin 4 and the mounting base 1 are detachably connected by a fixing component 5.

[0024] An elastic element 6 is provided between the two clamping structures 3, and a tension adjustment structure 7 is provided between the elastic element 6 and the two clamping structures 3.

[0025] In some embodiments, such as Fig. 2 As shown, the structure in which the two clamping structures 3 work together with the elastic element 6 to clamp is the prior art. For specific structure, please refer to the automatic unhooking device in the prior art.

[0026] Specifically, the two clamping structures 3 include a clamping part and a lever part. The lever part is used to connect the left and right jaws, ensuring that the jaws can rotate around the axis to achieve a hinge structure similar to scissors for "opening and closing". By pressing, the lever axis drives the two clamping structures 3 to close. Then, after releasing, the elastic force of the elastic element 6 drives the two clamping structures 3 to reset, thereby releasing the lifted items.

[0027] More specifically, by Fig. 2 As can be seen, because the two clamping structures 3 open and close through the lever shaft at the center point, when the weight of the lifted item is applied to the clamping end of the clamping structure 3, the clamping end of the two clamping structures 3 is driven to close under the traction of gravity. When the lifted item lands, the two clamping structures 3 are in a state of weightlessness and unfold under the action of the elastic element 6, realizing the automatic unhooking function. The specific structure will not be described in detail here.

[0028] Furthermore, the fixing component 5 includes two fixing members 51, and the mounting base 1 has support arms 11 on both sides. The bottom end of the fixing member 51 is rotatably connected to the recessed part of the support arm 11 through a rotating shaft 52.

[0029] Furthermore, the sidewall of the support arm 11 extends downward to form a relief groove 12, and a number of corresponding slots 13 are provided between the fixing member 51 and the opposite side of the relief groove 12, and the diameter of the number of slots 13 gradually decreases along the array direction.

[0030] The pin connector 4 is engaged in the slot 13 by the relief groove 12, and the cross-section of the pin connector 4 is H-shaped.

[0031] More specifically, one end of the rotating shaft 52 is fixedly connected to a ratchet 53, and the side of the support arm 11 is rotatably connected to a pawl 54 via a torsion spring. The pawl 54 engages with the ratchet 53 along the unlocking direction of the fixing member 51.

[0032] In this embodiment, the pin connector 4 is rotatably connected to the connecting ends of the two clamping structures 3, and the two shaft ends of the pin connector 4 are slidably connected in the relief groove 12. The appropriate slot 13 is selected according to the actual diameter. After the ratchet 53 cooperates with the pawl 54 to circumferentially lock the rotating shaft 52, the fixing member 51 can cooperate with the mounting base 1 to fix the clamping structure 3.

[0033] Of course, those in the field know that within the same range, the smaller the size of the unhooking device, the smaller its matching pin 4 is. Therefore, if the length of the pin 4 is the same, unhooking devices of different sizes can be fixed by matching slots 13.

[0034] Specifically, the two ends of the torsion spring are connected to the support arm 11 and the pawl 54 respectively. The torsion spring is used to drive the pawl 54 to reset. Under normal circumstances, the pawl 54 is engaged with the ratchet 53 along the unlocking direction of the fixing member 51, which can realize the circumferential locking function of the rotating shaft 52.

[0035] In general, the tension adjustment structure 7 includes a first connecting part 71 and a second connecting part 72. The two clamping structures 3 are respectively provided with a first connecting part 71 and a plurality of second connecting parts 72 on opposite sides. The elastic member 6 is respectively hung in the first connecting part 71 and the second connecting part 72.

[0036] In this embodiment, the elastic element 6 is a tension spring with hook-shaped structures at both ends. The two ends of the tension spring are respectively hooked into the first connecting part 71 and the second connecting part 72. More specifically, a number of second connecting parts 72 are distributed along the length direction of one of the clamping structures 3. When one end of the elastic element 6 is connected to the topmost second connecting part 72, the tension of the elastic element 6 is at its maximum.

[0037] Finally, the mounting base 1 and the mounting plate 2 are fixedly connected by fasteners 8.

[0038] Fastener 8 is a locking bolt or screw.

[0039] Working method: Mounting base 1 is fixed to the bottom of mounting plate 2 by fastener 8, and mounting plate 2 is fixedly connected to the bottom of drone;

[0040] Select the appropriate unhooking device according to the specifications of the items to be lifted. When installing the unhooking device, slide the pin 4 along the relief groove 12 into the appropriate slot 13, rotate the fixing part 51 half a turn, and the mounting base 1 can engage the pin 4 with the slot 13 on the other side of the side wall of the fixing part 51.

[0041] While the pin 4 rotates half a revolution, the pawl 54 rotates against the ratchet 53 under the action of the torsion spring. After the fixing part 51 is fixed, the pawl 54 locks against the ratchet 53 in the unlocking direction of the fixing part 51, thus fixing the two clamping structures 3.

[0042] Finally, the lanyard for the hoisting item is attached to the clamping ends of the two clamping structures 3. The drone drives the clamping structures 3 to rise. During the rise, the hoisting item is driven by gravity to bring the two clamping structures 3 together and clamp the item. When the item lands, the two clamping structures 3 are in a state of weightlessness, and the elastic element 6 drives the two clamping structures 3 to reset.

[0043] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An automatic unhooking device for unmanned aerial vehicle (UAV) lifting, which is mounted on a mounting plate (2) on the bottom of the UAV via a mounting base (1), characterized in that: The unhooking device consists of two clamping structures (3), which are connected by a top pin (4) and a bottom lever shaft (9). The pin (4) is detachably connected to the mounting base (1) by a fixing component (5). An elastic element (6) is provided between the two clamping structures (3), and a tension adjustment structure (7) is provided between the elastic element (6) and the two clamping structures (3).

2. The automatic unhooking device for unmanned aerial vehicle (UAV) lifting according to claim 1, characterized in that: The fixing component (5) includes two fixing parts (51), and the mounting base (1) is provided with support arms (11) on both sides. The bottom end of the fixing part (51) is rotatably connected to the recessed part of the support arm (11) through a rotating shaft (52).

3. The automatic unhooking device for unmanned aerial vehicle (UAV) lifting according to claim 2, characterized in that: The sidewall of the support arm (11) extends downward to form a relief groove (12). A number of corresponding slots (13) are provided between the fixing member (51) and the opposite side of the relief groove (12). The diameter of the number of slots (13) gradually decreases along the array direction. The pin (4) is engaged in the slot (13) through the relief groove (12), and the cross-section of the pin (4) is H-shaped.

4. The automatic unhooking device for unmanned aerial vehicle (UAV) lifting according to claim 3, characterized in that: One end of the rotating shaft (52) is fixedly connected to a ratchet (53), and the side of the support arm (11) is rotatably connected to a pawl (54) via a torsion spring. The pawl (54) engages with the ratchet (53) along the unlocking direction of the fixing member (51).

5. The automatic unhooking device for unmanned aerial vehicle (UAV) lifting according to claim 1, characterized in that: The tension adjustment structure (7) includes a first connecting part (71) and a second connecting part (72). The two clamping structures (3) are respectively provided with a first connecting part (71) and a plurality of second connecting parts (72) on opposite sides. The elastic member (6) is hung in the first connecting part (71) and the second connecting part (72) at both ends.

6. The automatic unhooking device for unmanned aerial vehicle (UAV) lifting according to claim 1, characterized in that: The mounting base (1) and the mounting plate (2) are fixedly connected by fasteners (8).

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