Unmanned aerial vehicle descent control device

Abstract

The utility model relates to the technical field of unmanned aerial vehicles, and discloses an unmanned aerial vehicle descent control device which comprises a rack of a U-shaped structure, a gear motor is arranged on one side of the rack, a rotating shaft of the gear motor is rotationally installed on the inner side of the rack and provided with a lifting rope, a wiring mechanism is arranged below the rotating shaft, and a fuse is arranged in the wiring mechanism. Due to the arrangement of the wiring mechanism, the lifting rope is uniformly wound on the surface of the rotating shaft during winding, so that the problems that the lifting rope is not uniformly distributed on the winding shaft, part of the lifting rope is subjected to greater friction and extrusion, the abrasion is accelerated, and the service life of the lifting rope is shortened are solved; under the condition that a lifting rope is clamped or goods cannot be recycled, continuous forced operation may cause the unmanned aerial vehicle to lose balance or suffer from extra tension, and then the unmanned aerial vehicle is damaged and even crashed. And the fusing function can quickly cut off the lifting rope at a critical moment, so that the unmanned aerial vehicle is prevented from being further involved.

Description

Technical Field

[0001] The utility model relates to the technical field of unmanned aerial vehicles (UAVs), in particular to a descent control device for UAVs. Background Art

[0002] When carrying out missions such as cargo transport, rescue, and reconnaissance, drones sometimes need to slowly and steadily lower cargo or equipment to the ground under specific circumstances. To achieve this, a drone descent device has become a key piece of equipment. Its primary function is to control the lowering speed of the sling, enabling the drone to lower cargo or equipment to its target location at a constant and safe speed without relying on a powertrain.

[0003] With the increasing use of drones in logistics, emergency rescue, and military applications, improving the safety and flexibility of cargo transportation has become crucial. While retractable sling descenders can meet the demands of lifting and lowering cargo, there are still situations where safe cargo recovery is impossible. For example, in the event of strong winds, obstacles, or system failures, the slings can become stuck, preventing effective recovery and posing a significant risk to drone operations.

[0004] Therefore, we propose a drone descender to solve the above problems. Utility Model Content

[0005] (1) Technical problems solved

[0006] In view of the deficiencies of the existing technology in the above background technology, the purpose of the present invention is to provide a drone descent control device to solve the problems raised in the above background technology.

[0007] (2) Technical solution

[0008] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0009] A drone descender comprises a U-shaped frame, a reduction motor is provided on one side of the frame, a shaft of the reduction motor is rotatably mounted on the inner side of the frame and is provided with a suspension rope, and is characterized in that a wiring mechanism is provided below the shaft;

[0010] The wiring mechanism includes a reciprocating screw with both ends rotatably connected to the frame and a wiring device threadedly mounted on the reciprocating screw, and a transmission assembly connecting the rotating shaft and the reciprocating screw is provided on one side of the frame;

[0011] A fuse is arranged in the wiring device.

[0012] Furthermore, the wiring device includes a wiring box with an inner cavity, the wiring box is threadedly connected to the reciprocating screw, and the upper and lower sides of the wiring box are provided with rope threading grooves connected to the inner cavity, the suspension rope passes through the rope threading grooves, and the fuse is arranged in the inner cavity and fits with the suspension rope.

[0013] Furthermore, the fuse is an electric heating rod.

[0014] Preferably, it also includes a limiting mechanism arranged below the wiring mechanism, the limiting mechanism includes a first roller rotatably mounted on one side of the frame and a second roller slidably mounted on one side of the first roller, two fixed seats are fixed on the bottom plate of the frame, connecting rings are rotatably mounted on both ends of the first roller, a movable rod is fixed to the side wall of the connecting ring, one end of the movable rod away from the connecting ring is passed through the fixed seat and is slidably connected to the fixed seat, a compression spring is provided between the connecting ring and the fixed seat, and the compression spring is sleeved on the movable rod.

[0015] Furthermore, the fixing seat is in a triangular structure, and a side of the fixing seat away from the connecting ring is an inclined surface.

[0016] Furthermore, the transmission assembly includes a first transmission wheel fixed to one end of the rotating shaft and a second transmission wheel fixed to one end of the reciprocating screw, and the first transmission wheel and the second transmission wheel are connected by a transmission belt.

[0017] Furthermore, a rope groove for passing the suspension rope is provided on the bottom plate of the frame.

[0018] Preferably, a protective shell is provided on the frame, the limiting mechanism is located inside the protective shell, and through slots are provided on the top and both ends of the protective shell.

[0019] (3) Beneficial effects

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] The routing mechanism ensures that the rope is evenly wound around the shaft during reeling, preventing uneven distribution of the rope around the reel. This would subject some ropes to increased friction and compression, leading to accelerated wear and shortening the rope's service life. If the rope becomes stuck or the cargo cannot be retrieved, continued forced operation could cause the drone to lose balance or experience excessive tension, potentially leading to damage or even a crash. A fuse function quickly cuts the rope at a critical moment, preventing further damage to the drone. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the external structure of the UAV descent control device of the utility model;

[0023] Figure 2This is a schematic diagram of the partial structure of the UAV descent control device of the utility model;

[0024] Figure 3 This is a schematic diagram of the partial structure of the UAV descent control device from another perspective of the utility model;

[0025] Figure 4 This is a schematic diagram of the transmission component structure of the UAV descender of the utility model.

[0026] In the figure: frame 1, reduction motor 2, rotating shaft 3, hanging rope 4, wiring mechanism 5, reciprocating screw 51, wiring device 52, wiring box 521, rope threading groove 522, transmission assembly 53, first transmission wheel 531, second transmission wheel 532, transmission belt 533, fuse 6, limiting mechanism 7, first roller 71, second roller 72, fixing seat 73, connecting ring 74, movable rod 75, compression spring 76, rope release groove 8, protective shell 9. DETAILED DESCRIPTION

[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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0028] See also Figure 1-4 As shown, the utility model provides a UAV descending device, comprising a frame 1 with a U-shaped structure, a reduction motor 2 is provided on one side of the frame 1, a rotating shaft 3 of the reduction motor 2 is rotatably mounted on the inner side of the frame 1 and provided with a suspension rope 4, characterized in that: a wiring mechanism 5 is provided below the rotating shaft 3, and a rope groove 8 for passing the suspension rope 4 is provided on the bottom plate of the frame 1;

[0029] The wiring mechanism 5 includes a reciprocating screw 51 and a wiring device 52, both ends of which are rotatably connected to the frame 1. Figure 2 and Figure 3 As shown, the wiring device 52 includes a wiring box 521 with an inner cavity, and the wiring box 521 is threadedly connected to the reciprocating screw 51. The specific wiring box 521 is a rectangular block structure, one end of its side wall is provided with a threaded groove threadedly connected to the reciprocating screw 51, and the other end is provided with a through hole. A guide rod passing through the through hole is provided on the inner side of the frame 1 to guide the wiring box 521 when it moves. The wiring box 521 is provided with a rope threading groove 522 connected to the inner cavity on both the upper and lower sides. The hanging rope 4 passes through the rope threading groove 522. A fuse 6 is provided in the wiring box 521, and the fuse 6 is fitted with the hanging rope 4. Figure 4As shown, a transmission assembly 53 connecting the rotating shaft 3 and the reciprocating screw 51 is provided on one side of the frame 1. The transmission assembly 53 includes a first transmission wheel 531 fixed at one end of the rotating shaft 3 and a second transmission wheel 532 fixed at one end of the reciprocating screw 51. The first transmission wheel 531 and the second transmission wheel 532 are connected by a transmission belt 533.

[0030] When the reduction motor 2 drives the rope 4 to reel in, the reduction motor 2 drives the reciprocating screw 51 to rotate together through the transmission assembly 53, so that the wiring box 521 on the reciprocating screw 51 moves back and forth, so that the rope 4 is evenly wound on the rotating shaft 3 to prevent the unevenly wound rope from causing part of the rope to be subjected to greater friction and extrusion, resulting in accelerated wear and shortening the service life of the rope; and a fuse 6 is added in the wiring box 521, which can be used to perform emergency melting of the rope 4 when the rope 4 cannot be recovered to prevent the unrecoverable rope 4 from affecting the drone. The melting function can serve as the last line of defense for the drone lifting system, and is combined with existing safety mechanisms such as automatic hovering and obstacle avoidance systems to provide multiple safety guarantees and minimize risks. The fuse 6 can use an electric heating rod, which can reach the temperature required for melting in a very short time, respond quickly to emergencies, and is simple and practical.

[0031] As a preferred technical solution of the present invention, the limiting mechanism 7 below the wiring mechanism 5 includes a first roller 71 rotatably mounted on one side of the frame 1 and a second roller 72 slidably mounted on the side of the first roller 71. Two fixed seats 73 are fixed to the bottom plate of the frame 1. Connecting rings 74 are rotatably mounted at both ends of the first roller 71. A movable rod 75 is fixed to the side wall of the connecting ring 74. The end of the movable rod 75 away from the connecting ring 74 is inserted through the fixing seat 73 and slidably connected thereto. A compression spring 76 is provided between the connecting ring 74 and the fixing seat 73, and the compression spring 76 is sleeved on the movable rod 75. Under the action of the compression spring 76, the second roller 72 moves toward the first roller 71, clamping the suspension ropes 4 of different diameters, effectively reducing the shaking of the suspension ropes 4, and cooperating with the wiring mechanism 5 to ensure that the suspension ropes 4 are evenly distributed on the rotating shaft 3.

[0032] As a preferred technical solution of the present invention, the fixing seat 73 has a triangular structure, and the side of the fixing seat 73 away from the connecting ring 74 is an inclined surface. The triangular structure of the fixing seat 73 can enhance its stability when clamping the lifting rope 4.

[0033] As an optimal technical solution of the present invention: a protective shell 9 is provided on the frame 1, the limiting mechanism 7 is located in the protective shell 9, and through grooves are provided on the top and both ends of the protective shell 9. The setting of the protective shell 9 is to reduce the influence of external factors on the two rollers.

[0034] For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances; for technicians in this field, they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of this utility model should be included in the scope of protection of this utility model.

Claims

1. A drone descender, comprising a U-shaped frame (1), a reduction motor (2) provided on one side of the frame (1), a rotating shaft (3) of the reduction motor (2) rotatably mounted on the inner side of the frame (1) and provided with a suspension rope (4), characterized in that: A wiring mechanism (5) is provided below the rotating shaft (3); The wiring mechanism (5) comprises a reciprocating screw (51) with both ends rotatably connected to the frame (1) and a wiring device (52) threadedly mounted on the reciprocating screw (51); a transmission assembly (53) connecting the rotating shaft (3) and the reciprocating screw (51) is provided on one side of the frame (1); A fuse (6) is provided in the wiring device (52).

2. The UAV descent control device according to claim 1, characterized in that: The wiring device (52) comprises a wiring box (521) with an inner cavity, the wiring box (521) is threadedly connected to the reciprocating screw (51), and the wiring box (521) is provided with rope threading grooves (522) communicating with the inner cavity on both upper and lower sides. The suspension rope (4) passes through the rope threading grooves (522), and the fuse (6) is arranged in the inner cavity and fits with the suspension rope (4).

3. The UAV descent control device according to claim 2, characterized in that: The fuse (6) is an electric heating rod.

4. The UAV descent control device according to claim 1, characterized in that: The invention also includes a limiting mechanism (7) arranged below the wiring mechanism (5), the limiting mechanism (7) including a first roller (71) rotatably mounted on one side of the frame (1) and a second roller (72) slidably mounted on one side of the first roller (71), two fixed seats (73) are fixed on the bottom plate of the frame (1), connecting rings (74) are rotatably mounted at both ends of the first roller (71), a movable rod (75) is fixed to the side wall of the connecting ring (74), the end of the movable rod (75) away from the connecting ring (74) is passed through the fixed seat (73) and is slidably connected thereto, and a compression spring (76) is provided between the connecting ring (74) and the fixed seat (73).

5. The UAV descent control device according to claim 4, characterized in that: The fixing seat (73) is in a triangular structure, and the side of the fixing seat (73) away from the connecting ring (74) is an inclined surface.

6. The UAV descent control device according to claim 4, characterized in that: The compression spring (76) is sleeved on the movable rod (75).

7. The UAV descent control device according to claim 1, characterized in that: The transmission assembly (53) comprises a first transmission wheel (531) fixed to one end of the rotating shaft (3) and a second transmission wheel (532) fixed to one end of the reciprocating screw (51), and the first transmission wheel (531) and the second transmission wheel (532) are connected to each other through a transmission belt (533).

8. The UAV descent control device according to claim 1, characterized in that: A rope groove (8) for passing the suspension rope (4) is provided on the bottom plate of the frame (1).

9. The UAV descent control device according to claim 4, characterized in that: A protective shell (9) is provided on the frame (1), the limiting mechanism (7) is located inside the protective shell (9), and through slots are provided on the top and both ends of the protective shell (9).

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