Safety protection structure of a tethered unmanned aerial vehicle

Abstract

The utility model relates to a kind of safety protection structure of tethered unmanned aerial vehicle, fixed seat, ground stake and fixed pulley, ground stake is spiral ground stake, it is rotatably arranged in the bottom of fixed seat, support seat is equipped below fixed seat, and limit mechanism is equipped between support seat and fixed seat, so that fixed seat moves up and down, ground stake is drilled into ground through support seat;Driving mechanism is equipped on fixed seat, for driving ground stake to rotate;Fixed pulley is equipped with two, all rotatably arranged on fixed seat, two fixed pulleys are all equipped with wire slot, and two fixed pulleys are rotatably opposite, cable passes between the wire slot of two fixed pulleys. The utility model is through using spiral ground stake, using its rotation characteristics easily drills into underground, to realize the restriction of not needing to consider installation ground soil softness;Two fixed pulleys are used to clamp cable, to ensure that cable is not abraded in the process of retraction and extension;Ground stake is rotated by worm and worm drive mechanism drive, structure is simple, and have self-locking function.

Description

Technical Field

[0001] This utility model relates to the field of unmanned aerial vehicle (UAV) technology, specifically to a safety protection structure for a tethered UAV. Background Technology

[0002] Tethered drones, also known as tethered unmanned aerial vehicles (UAVs), are a special type of multi-rotor UAV. They are connected to the ground via a tethered cable and powered by ground-based electricity, enabling them to remain airborne for extended periods. Furthermore, the optical fiber in the cable transmits photoelectric signals from the onboard electronic devices, ensuring communication and data transmission between the ground and the drone. Thanks to the cable's stability, tethered drones exhibit significant stability in the air, maintaining stable hovering even in harsh environments. Wired transmission also offers strong resistance to electromagnetic interference, making tethered drones commonly used in various critical situations. For example, in situations where communication is disrupted due to natural disasters, tethered drones can be integrated with 4G or 5G base stations to serve as high-altitude emergency communication base stations. At disaster sites such as earthquakes, floods, and mudslides, tethered drones can provide real-time images and data to assist rescue personnel in decision-making and command, and can also serve as emergency lighting equipment, providing nighttime illumination at rescue sites.

[0003] Tethered drones mainly consist of the drone itself and a cable reel. Because they are frequently used in harsh natural environments and have weak lightning protection, during cable deployment and retrieval, if heavy rain and thunderstorms occur, the drone flying at high altitudes is prone to attracting lightning. Due to the conductivity of rainwater, current can travel down the cable and potentially reach the cable reel, causing injury to the operator. Utility model patent CN221418630U discloses a quick-grounding stud for tethered drones and its tethering system. This quick-grounding stud includes a fixed pulley, an adjustable tension slider, a fixed base, and a grounding stake. The fixed pulley has a groove for the tethered cable to pass through and is rotatably mounted on the fixed base. The adjustable tension slider is mounted on the fixed base via a rotating shaft and has a sliding part. The fixed base has a sliding rail, and the sliding part slides into the sliding rail. The fixed base is mounted on the grounding stake. This quick-grounding stud for tethered drones significantly enhances the lightning protection capability of tethered drones and the safety of operators. However, although the structure is simple, the surface of the ground stake is smooth, and it needs to be forcefully inserted into the ground when used. If the ground soil is hard, it is difficult to insert. When the adjustable tension slider at the bottom of the fixed pulley clamps the cable, the edge of the slider is not smooth enough and it is in direct contact with the cable. During the cable winding and unwinding process, it is easy to scratch the insulation layer of the cable, thus affecting its surface insulation performance. Utility Model Content

[0004] The purpose of this invention is to overcome the above-mentioned technical defects and provide a safety protection structure for tethered drones that is easy to fix and can protect the cable from damage during cable deployment and retraction.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a safety protection structure for a tethered drone, comprising a fixed base, ground stakes, and fixed pulleys. The ground stakes are helical ground stakes, rotatably mounted at the bottom of the fixed base. A support base is provided below the fixed base, and a limiting mechanism is provided between the support base and the fixed base to restrict the fixed base from moving up and down towards or away from the support base. The ground stakes penetrate the support base and drill into the ground. A driving mechanism is provided on the fixed base to drive the ground stakes to rotate. Two fixed pulleys are provided, both rotatably mounted on the fixed base. Each fixed pulley has a groove, and the two fixed pulleys rotate in opposite directions. The drone's cable passes through the grooves between the two fixed pulleys.

[0006] Furthermore, the limiting mechanism includes a limiting rod and a limiting hole. The limiting rod is located on both sides of the ground pile nail and is fixedly mounted on the fixed base. The limiting hole is located on the support base, and the limiting rod passes through the limiting hole.

[0007] Furthermore, the bottom of the limiting rod is provided with an anti-detachment block, the diameter of which is larger than the diameter of the limiting hole.

[0008] Furthermore, the drive mechanism includes a worm gear and a worm. The worm gear is fixedly mounted on the ground stake, and the worm engages with the worm gear and is rotatably mounted at the bottom of the fixed base.

[0009] Furthermore, one end of the worm gear extends to the outside of the fixed seat, and a crank handle is connected to the end.

[0010] Furthermore, gears are fixedly provided on both sides of the fixed pulley, and the gears on the two fixed pulleys mesh with each other.

[0011] Furthermore, the fixed pulley has a rotating shaft in the middle and is connected to the fixed seat through the rotating shaft. The rotating shaft is a damping rotating shaft.

[0012] The beneficial effects of this utility model are as follows: This utility model uses a spiral ground stake, which can easily drill into the ground by taking advantage of its rotational characteristics, thus eliminating the limitation of the softness of the soil on the installation ground; it uses two fixed pulleys to hold the cable, ensuring that the cable will not be worn during the winding and unwinding process; the ground stake is driven to rotate by a worm gear transmission mechanism, which has a simple structure and a self-locking function. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the safety protection structure for a tethered unmanned aerial vehicle according to this utility model;

[0014] Figure 2This is a schematic diagram of the safety protection structure for a tethered unmanned aerial vehicle according to this utility model;

[0015] Figure 3 This is a schematic diagram of the support base of a safety protection structure for a tethered unmanned aerial vehicle (UAV) according to this utility model.

[0016] 1. Fixed base; 2. Ground stake; 3. Fixed pulley; 4. Support base; 5. Cable groove; 6. Limiting rod; 7. Limiting hole; 8. Anti-detachment block; 9. Worm gear; 10. Worm; 11. Handle; 12. Gear; 13. Rotating shaft. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model are within the protection scope of the present utility model.

[0018] Embodiments of this utility model: such as Figure 1-3 As shown, a safety protection structure for a tethered drone includes a fixed base 1, ground stakes 2, and fixed pulleys 3. The ground stakes 2 are helical ground stakes, rotatably mounted at the bottom of the fixed base 1. A support base 4 is provided below the fixed base 1, and a limiting mechanism is provided between the support base 4 and the fixed base 1 to restrict the fixed base 1 from moving up and down towards or away from the support base 4. The ground stakes 2 penetrate the support base 4 and drill into the ground. A driving mechanism is provided on the fixed base 1 to drive the ground stakes 2 to rotate. Two fixed pulleys 3 are provided, both rotatably mounted on the fixed base 1. Each fixed pulley 3 has a groove 5, and the two fixed pulleys 3 rotate in opposite directions. The drone's cable passes through the grooves 5 between the two fixed pulleys 3.

[0019] Through the above structure, the ground stake 2 can be drilled into the ground through the rotation of the drive mechanism to achieve underground fixation, which is not limited by the softness of the soil, thus making the fixing operation convenient and quick. At the same time, the two fixed pulleys 3 rotate synchronously in opposite directions to clamp the cable in the cable groove 5. During the cable winding and unwinding process, the rotation of the fixed pulleys 3 effectively prevents cable wear.

[0020] like Figure 1 , 3 As shown, the limiting mechanism includes a limiting rod 6 and a limiting hole 7. The limiting rod 6 is located on both sides of the ground pile nail 2 and is fixedly mounted on the fixed base 1. The limiting hole 7 is mounted on the support base 4, and the limiting rod 6 passes through the limiting hole 7.

[0021] like Figure 2 As shown, the bottom of the limiting rod 6 is provided with an anti-detachment block 8, and the diameter of the anti-detachment block 8 is larger than the diameter of the limiting hole 7.

[0022] With the above structure, during the downward movement of the ground pile nail 2, the limiting rod 6 moves downward along the limiting hole 7, thereby preventing the fixing seat 1 from rotating with the ground pile nail 2 and ensuring that the ground pile nail 2 can be drilled downward smoothly.

[0023] like Figure 1 , 2 As shown, the driving mechanism includes a worm gear 9 and a worm 10. The worm gear 9 is fixedly mounted on the ground stake 2, and the worm 10 cooperates with the worm gear 9 and is rotatably mounted at the bottom of the fixed base 1.

[0024] One end of the worm gear 10 extends to the outside of the fixed base 1, and a crank handle 11 is connected to the end of the worm gear 10.

[0025] With the above structure, turning the crank 11 can drive the worm gear 10 to rotate, which in turn causes the worm wheel 9 to rotate, thereby driving the ground pile nail 2 to drill downwards.

[0026] like Figure 1 As shown, gears 12 are fixed on both sides of the fixed pulley 3, and the gears 12 on the two fixed pulleys 3 mesh with each other.

[0027] The fixed pulley 3 has a rotating shaft 13 in the middle and is connected to the fixed seat 1 through the rotating shaft 13. The rotating shaft 13 is a damping rotating shaft.

[0028] With the above structure, the two fixed pulleys 3 are connected by gear 12 to ensure synchronous rotation, thereby preventing damage to the cable insulation layer during cable winding and unwinding.

[0029] In practical applications, this safety device should be placed on the ground and supported by the support base 4. When it is necessary to fix the device, the operator can turn the crank handle 11. This action will drive the worm gear 10 to rotate, which in turn will cause the worm wheel 9 to rotate, ultimately causing the ground stake 2 to rotate and drill into the ground, thereby achieving the purpose of fixing the device. At the same time, the cable is properly placed in the cable groove 5 between the two fixed pulleys 3. During the cable winding and unwinding process, these two fixed pulleys 3 can rotate freely, effectively preventing damage to the cable insulation layer, thereby ensuring the safety of the cable.

[0030] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

[0032] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A safety protection structure for a tethered unmanned aerial vehicle, comprising a fixed base (1), ground stakes (2), and a fixed pulley (3), characterized in that: The ground stake (2) is a spiral ground stake, which is rotatably set at the bottom of the fixed base (1). A support base (4) is provided below the fixed base (1). A limiting mechanism is provided between the support base (4) and the fixed base (1) to restrict the fixed base (1) from moving up and down to approach or away from the support base (4). The ground stake (2) passes through the support base (4) and drills into the ground. A driving mechanism is provided on the fixed base (1) to drive the ground stake (2) to rotate. There are two fixed pulleys (3), both of which are rotatably set on the fixed base (1). Both fixed pulleys (3) are provided with wire grooves (5), and the two fixed pulleys (3) rotate in opposite directions. The cable of the UAV passes through the wire grooves (5) between the two fixed pulleys (3).

2. The safety protection structure for a tethered unmanned aerial vehicle according to claim 1, characterized in that: The limiting mechanism includes a limiting rod (6) and a limiting hole (7). The limiting rod (6) is located on both sides of the ground pile nail (2) and is fixedly installed on the fixed base (1). The limiting hole (7) is installed on the support base (4), and the limiting rod (6) passes through the limiting hole (7).

3. The safety protection structure for a tethered unmanned aerial vehicle according to claim 2, characterized in that: The bottom of the limiting rod (6) is provided with an anti-detachment block (8), the diameter of which is larger than the diameter of the limiting hole (7).

4. The safety protection structure for a tethered unmanned aerial vehicle according to claim 1, characterized in that: The drive mechanism includes a worm wheel (9) and a worm (10). The worm wheel (9) is fixedly mounted on the ground stake (2), and the worm (10) cooperates with the worm wheel (9) and is rotatably mounted at the bottom of the fixed seat (1).

5. The safety protection structure for a tethered unmanned aerial vehicle according to claim 4, characterized in that: One end of the worm (10) extends to the outside of the fixed seat (1), and the end is connected to a crank (11).

6. The safety protection structure for a tethered unmanned aerial vehicle according to claim 1, characterized in that: Gears (12) are fixed on both sides of the fixed pulley (3), and the gears (12) on the two fixed pulleys (3) mesh with each other.

7. The safety protection structure for a tethered unmanned aerial vehicle according to claim 6, characterized in that: The fixed pulley (3) has a rotating shaft (13) in the middle and is connected to the fixed seat (1) through the rotating shaft (13). The rotating shaft (13) is a damping rotating shaft.

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