A high-altitude drone for advertising

Abstract

The present invention belongs to the technical field of unmanned aerial vehicles, and specifically relates to a high-altitude unmanned aerial vehicle for placing advertisements, the high-altitude unmanned aerial vehicle for placing advertisements comprises an unmanned aerial vehicle body, a banner, a winding part, a pressure regulating part, and a torsion part, and a storage tube is installed at the lower end of the unmanned aerial vehicle body. In the invention, when there is strong wind, the wind blows the banner, so that the banner drives the rotating shaft to move downward inside the storage tube, so that the pressure regulating part is compressed by force, and when the banner drives the rotating shaft to move downward inside the storage tube to trigger the winding part to run, the winding part drives the rotating shaft to rotate, so that the banner is stored inside the storage tube, so as to avoid the influence of the strong wind on the banner and further endanger the flight safety of the unmanned aerial vehicle body, thereby improving the safety, and by adjusting the pressure regulating part, the wind blowing the banner can be adjusted to drive the pulling force of the rotating shaft to move inside the storage tube, and then the pulling force of the rotating shaft to move inside the storage tube when the wind blows the banner can be adjusted according to the banners of different sizes, thereby improving the adaptability.

Description

Technical Field

[0001] The invention belongs to the technical field of unmanned aerial vehicles, and in particular relates to a high-altitude unmanned aerial vehicle for placing advertisements. Background Art

[0002] With the advancement of artificial intelligence technology, the field of drones has developed rapidly. In recent years, multi-rotor drones have gradually been used to hang banners at the opening and closing ceremonies or ribbon-cutting ceremonies of large-scale events to enrich the content of the event. However, the use of multi-rotor drones to hang banners is currently in its infancy and only has the function of hanging, that is, fixing the banner on the drone and then taking off and pulling it into the air.

[0003] During the flight, if a drone carries a banner advertisement and flies too fast or the wind speed is too strong, the banner may easily disrupt the flight of the drone, causing the flight to overload and lose control, leading to a crash. This poses a huge safety hazard. Some drones improve flight safety by discarding banner advertisements, which shortens the time for advertising and increases costs.

[0004] For example, the Chinese patent announcement number CN217864783U discloses a UAV with an advertising banner fixing function. By turning the hand wheel, the fixing position of the second holding plate can be adjusted, which is convenient for adjustment according to the length of different banner boards to achieve the holding and fixing of the upper and lower ends of the banner board. During the flight, if the flight speed is too fast or the wind speed is too high, it is easy to cause flight overload and loss of control, resulting in a crash, which is a huge safety hazard. Another example is the Chinese patent announcement number CN212084629U, which discloses a banner hanging device based on a UAV platform. In strong winds, the bearing plate and the machine are separated to avoid the risk of crashing of the UAV hanging with advertising banners. However, stability is achieved by discarding the banner advertisements, resulting in that when the wind is low, advertisements cannot be placed any further and new banners need to be mounted, which increases costs and reduces the efficiency of advertising placement. At the same time, the discarded advertisements increase safety hazards. Summary of the invention

[0005] The purpose of the present invention is to provide a high-altitude drone for advertising, which can store banner advertisements in windy weather to reduce the harm caused by the banners to the flight of the drone, reduce costs, and reduce safety hazards.

[0006] The technical solution adopted by the present invention is as follows:

[0007] A high-altitude drone for placing advertisements, comprising:

[0008] A drone body, wherein a storage tube is installed at the lower end of the drone body, and both ends of the storage tube are provided with a cover plate, and a rotating shaft is installed inside the cover plate;

[0009] A banner, wherein the banner is installed on the outside of the rotating shaft;

[0010] A winding part, which is installed on the outside of the rotating shaft and close to the cover plate, and is used to drive the rotating shaft to store the banner into the storage tube;

[0011] A voltage regulating part, the voltage regulating part is installed inside the winding part, and the voltage regulating part is used to adjust the triggering distance of the winding part;

[0012] A torsion portion, the torsion portion is installed on the outside of the rotating shaft, and the torsion portion is used to increase the torsion of the winding portion;

[0013] Wherein, a switching part is installed on the twisting part, and the switching part is used to make the twisting part cancel the torsion force applied to the winding part when the banner is pulled out from the inside of the storage tube.

[0014] In a preferred embodiment, the winding portion includes a ratchet a and a coil spring, the ratchet a is fixed on the outside of the rotating shaft and close to the cover plate, the coil spring is arranged on the outside of the rotating shaft, one end of the coil spring is fixedly connected to the ratchet a, and the other end of the coil spring is fixedly connected to the torsion portion, a fixing block is installed on the inside of the storage tube close to the ratchet a and away from the cover plate, a triggering member is installed on the side of the fixing block close to the ratchet a, a pawl a is rotatably connected to the side of the triggering member close to the ratchet a, the pawl a is clamped with the ratchet a, a torsion spring a is arranged on the pawl a, one end of the torsion spring a is fixedly connected to the pawl a, and the other end of the torsion spring a is fixedly connected to the triggering member.

[0015] In a preferred embodiment, the trigger member includes a connecting plate, which is slidably connected to a side of a fixed block close to a ratchet a, and the connecting plate is rotatably connected to a rotating shaft, a pull rod is fixed to the upper end of the pawl a, a stop block is fixed to the upper end of the pull rod, and a fixed frame is fixed to a side of the fixed block close to the ratchet a and above the pawl a.

[0016] In a preferred embodiment, the voltage regulating part includes a compression spring a, which is arranged inside the fixed block and located below the rotating shaft. A slider is slidably connected inside the fixed block and below the compression spring a. The lower end of the slider is rotatably connected to a screw rod, and the screw rod is threadedly connected to the storage tube.

[0017] In a preferred embodiment, the torsion portion includes an impeller, which is installed on the outside of the rotating shaft and located on the outside of the storage tube. A switching portion is installed on the impeller and on the outside of the rotating shaft. A ratchet b is installed on one end of the switching portion located inside the storage tube and on the outside of the rotating shaft. A fixed plate is rotatably connected to the side of the ratchet b away from the switching portion. The fixed plate is rotatably connected to the rotating shaft. One end of the coil spring away from the ratchet a is fixedly connected to the fixed plate, and a pawl b is rotatably connected to the side of the fixed plate close to the ratchet b. A torsion spring b is provided on the pawl b, one end of the torsion spring b is fixedly connected to the pawl b, and the other end of the torsion spring b is fixedly connected to the fixed plate, and the ratchet b is clamped with the ratchet b.

[0018] In a preferred embodiment, the switching part includes a connecting tube and a hook, the connecting tube is rotatably connected to the side of the ratchet b close to the impeller, the hook is installed on the side of the connecting tube away from the ratchet b, a block is provided on the side of the impeller close to the hook, the block is engaged with the hook, limiting blocks are fixed at both ends of the rotating shaft, a compression spring b is provided on the outside of the rotating shaft and between the impeller and the limiting block, and an electromagnet is provided on the side of the cover plate located inside the storage tube.

[0019] In a preferred embodiment, a magnetic ring is provided on one side of the impeller close to the cover plate and close to the outer side of the electromagnet.

[0020] In a preferred embodiment, a friction part is provided on the side of the ratchet b close to the connecting pipe, and the friction part includes an arc block, a sliding rod is fixed to the upper end of the arc block, and the sliding rod is slidably connected to the ratchet b. A compression spring c is provided on the outside of the sliding rod and between the compression spring c and the ratchet b.

[0021] In a preferred solution, a friction pad is provided on a side of the arc block close to the connecting pipe.

[0022] In a preferred embodiment, a counterweight rod is fixed to the lower end of the banner.

[0023] The technical effects achieved by the present invention are:

[0024] In the present invention, when there is strong wind, the wind blows the banner, so that the banner drives the rotating shaft to move downward inside the storage tube, so that the pressure regulating part is compressed by force. When the banner drives the rotating shaft to move downward inside the storage tube to trigger the winding part to operate, the winding part drives the rotating shaft to rotate, so that the banner is stored inside the storage tube, thereby avoiding the influence of the strong wind on the banner and further endangering the flight safety of the main body of the UAV, thereby improving the safety.

[0025] The present invention can adjust the wind blowing banner by adjusting the pressure regulating part, driving the pulling force when the rotating shaft moves inside the storage tube, and then can adjust the pulling force that causes the rotating shaft to move inside the storage tube when the wind blows the banner according to banners of different sizes, thereby improving adaptability;

[0026] The present invention increases the torque of the winding part through the operation of the twisting part, so as to increase the speed at which the winding part drives the rotating shaft to rotate, and increases the speed at which the banner is stored in the storage tube, so as to reduce the time when the banner is blown by the wind in windy weather, and reduce the time when the strong wind weather causes instability to the flight of the drone body. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 It is a schematic diagram of the structure of the storage tube and the switching part of the present invention;

[0029] Figure 3 is a cross-sectional view of the present invention;

[0030] Figure 4 The present invention Figure 3 The enlarged view of point A in the middle;

[0031] Figure 5 It is an exploded view of the winding part, the trigger part, the voltage regulating part, the torsion part, the switching part and the friction part of the present invention;

[0032] Figure 6 It is a schematic diagram of the structure of the winding part, the triggering member and the voltage regulating part of the present invention;

[0033] Figure 7 It is a structural schematic diagram of the trigger member and the voltage regulating part of the present invention;

[0034] Figure 8 It is a schematic diagram of the structure in which the friction member of the present invention is installed on the torsion part;

[0035] Fig. 9 is an exploded view of the torsion portion of the present invention;

[0036] Fig.10 is an exploded view of the friction member of the present invention;

[0037] Fig.11 It is an exploded view of the switching part of the present invention.

[0038] In the accompanying drawings, the names of the components represented by the reference numerals are as follows:

[0039] 1. Drone body; 2. Storage tube; 3. Banner; 4. Rotating shaft; 5. Cover plate; 6. Counterweight rod;

[0040] 10. winding part; 11. fixing block; 12. ratchet a; 13. coil spring; 14. ratchet pawl a; 15. torsion spring a;

[0041] 20. trigger member; 21. connecting plate; 22. pull rod; 23. stopper; 24. fixing frame;

[0042] 30. Pressure regulating part; 31. Compression spring a; 32. Slider; 33. Screw;

[0043] 40. Torsion unit; 41. Fixing plate; 42. Ratchet wheel b; 43. Ratchet pawl b; 44. Torsion spring b; 45. Impeller;

[0044] 50, switching part; 51, connecting pipe; 52, hook; 53, clamping block; 54, limiting block; 55, compression spring b; 56, electromagnet.

[0045] 60. Friction part; 61. Sliding rod; 62. Arc block; 63. Compression spring c. DETAILED DESCRIPTION

[0046] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0047] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0048] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The phrase "in a preferred embodiment" that appears in different places in this specification does not refer to the same embodiment, nor is it a separate or selective embodiment that is mutually exclusive with other embodiments.

[0049] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0050] Please refer to the attached Figures 1 to 11As shown, a high-altitude drone for advertising is provided, including a drone body 1, a banner 3, a winding part 10, a pressure regulating part 30, and a twisting part 40. A storage tube 2 is installed at the lower end of the drone body 1, and a cover plate 5 is provided at both ends of the storage tube 2. A rotating shaft 4 is installed inside the cover plate 5. The banner 3 is installed on the outside of the rotating shaft 4, and the winding part 10 is installed on the outside of the rotating shaft 4 and close to the cover plate 5. The winding part 10 is used to drive the rotating shaft 4 to store the banner 3 inside the storage tube 2. The pressure regulating part 30 is installed inside the winding part 10, and the pressure regulating part 30 is used to adjust the triggering distance of the winding part 10. The twisting part 40 is installed on the outside of the rotating shaft 4, and the twisting part 40 is used to increase the torque of the winding part 10.

[0051] The torsion part 40 is provided with a switching part 50 , and the switching part 50 is used to enable the torsion part 40 to cancel the torsion force applied to the winding part 10 when the banner 3 is pulled out from the storage tube 2 .

[0052] Specifically, when there is strong wind, the wind blows the banner 3, so that the banner 3 drives the rotating shaft 4 to move downward inside the storage tube 2, so that the pressure regulating part 30 is compressed. When the banner 3 drives the rotating shaft 4 to move downward inside the storage tube 2 to trigger the winding part 10 to operate, the winding part 10 drives the rotating shaft 4 to rotate, so that the banner 3 is stored inside the storage tube 2. By adjusting the pressure regulating part 30, the tension of the wind blowing the banner 3 to drive the rotating shaft 4 to move inside the storage tube 2 can be adjusted, and then the wind blowing banner 3 can be adjusted according to banners 3 of different sizes. When the banner 3 is stored in the storage tube 2, the pulling force that causes the rotating shaft 4 to move in the storage tube 2 increases the torsion of the winding part 10 through the operation of the torsion part 40, so as to increase the speed at which the winding part 10 drives the rotating shaft 4 to rotate, and to increase the speed at which the banner 3 is stored in the storage tube 2, so as to reduce the time that the wind blows the banner 3 in windy weather, and reduce the time that the strong wind weather causes instability to the flight of the drone body 1. When the banner 3 is pulled out from the storage tube 2, the torsion part 40 will cancel the torsion applied to the winding part 10 through the switching part 50, so as to increase the speed at which the banner 3 is pulled out.

[0053] In a preferred embodiment, please refer to Figures 3 to 6 The winding portion 10 includes a ratchet a12 and a coil spring 13. The ratchet a12 is fixed on the outside of the rotating shaft 4 and close to the cover plate 5. The coil spring 13 is arranged on the outside of the rotating shaft 4. One end of the coil spring 13 is fixedly connected to the ratchet a12, and the other end of the coil spring 13 is fixedly connected to the torsion portion 40. A fixing block 11 is installed on the side of the interior of the storage tube 2 close to the ratchet a12 away from the cover plate 5. A trigger member 20 is installed on the side of the fixing block 11 close to the ratchet a12. A pawl a14 is rotatably connected to the side of the trigger member 20 close to the ratchet a12. The pawl a14 is clamped with the ratchet a12. A torsion spring a15 is arranged on the pawl a14. One end of the torsion spring a15 is fixedly connected to the pawl a14, and the other end of the torsion spring a15 is fixedly connected to the trigger member 20.

[0054] In this embodiment, in windy weather, when the drone body 1 is flying in the air with the banner 3, the ratchet a14 is engaged with the ratchet a12 through the torsion force of the torsion spring a15 to prevent the ratchet a12 from rotating, driving the shaft 4 to rotate accordingly. The wind blows the banner 3, causing the banner 3 to generate a force opposite to the flight direction of the drone body 1, which will drive the shaft 4 to move downward inside the storage tube 2, causing the ratchet a12, the coil spring 13 and the trigger member 20 to move downward accordingly. When the shaft 4 moves downward a certain distance, the trigger member 20 will operate. , so that the pawl a14 cancels the engagement with the ratchet a12, and then cancels the limitation on the ratchet a12. The torsional force of the coil spring 13 will drive the ratchet a12 to rotate, so that the shaft 4 rotates accordingly. The banner 3 is stored in the storage tube 2 through the rotation of the shaft 4 to reduce the impact of the wind blowing the banner 3 on the flight of the drone body 1. When the banner 3 is pulled, the shaft 4 is driven to rotate in the opposite direction, so that the pawl a14 slides against the outside of the ratchet a12. When the pulling of the banner 3 stops, the pawl a14 is engaged with the ratchet a12 to prevent the banner 3 from being stored in the storage tube 2.

[0055] Next, please refer to Figure 3 , Figure 6 and Figure 7 The trigger member 20 includes a connecting plate 21, which is slidably connected to the side of the fixed block 11 close to the ratchet a12, and the connecting plate 21 is rotatably connected to the rotating shaft 4. A pull rod 22 is fixed to the upper end of the pawl a14, and a stopper 23 is fixed to the upper end of the pull rod 22. A fixing frame 24 is fixed to the side of the fixed block 11 close to the ratchet a12 and above the pawl a14.

[0056] As mentioned above, in windy weather, when the drone body 1 is flying in the air with the banner 3, the wind blows the banner 3, causing the banner 3 to generate a force opposite to the flight direction of the drone body 1, which will drive the rotating shaft 4 to move downward inside the fixed block 11, and will drive the connecting plate 21 to move downward with it. The position of the fixed frame 24 is fixed, and the ratchet a12 moves the same distance as the connecting plate 21. After the rotating shaft 4 moves a certain distance, the block 23 contacts the fixed frame 24, and the rotating shaft 4 continues to move downward, which will prevent the movement of the block 23 through the fixed frame 24, so that the pull rod 22 pulls the ratchet a14 to rotate, and then the ratchet a14 cancels the restriction on the ratchet a12, which will cause the coil spring 13 to drive the ratchet a12 to rotate, so that the banner 3 is stored in the storage tube 2.

[0057] Secondly, please also refer to Figures 3 to 7The pressure regulating part 30 includes a compression spring a31, which is arranged inside the fixed block 11 and located below the rotating shaft 4. A slider 32 is slidably connected inside the fixed block 11 and below the compression spring a31. The lower end of the slider 32 is rotatably connected to a screw 33, and the screw 33 is threadedly connected to the storage tube 2.

[0058] As mentioned above, in windy weather, when the drone body 1 is flying in the air with the banner 3, the wind blows the banner 3, causing the banner 3 to generate a force opposite to the flight direction of the drone body 1, which will drive the rotating shaft 4 to move downward inside the fixed block 11, causing the compression spring a31 to be compressed, so that the compression spring a31 generates an upward thrust along with the rotating shaft 4 to offset part of the force of the wind blowing the banner 3 and driving the rotating shaft 4 to move downward inside the fixed block 11. By rotating the screw 33, the position of the slider 32 will be changed, so that the pressure on the compression spring a31 in the initial state will be changed, causing the force of the wind blowing the banner 3 to drive the rotating shaft 4 to move downward to the fixed frame 24 to limit the movement position of the block 23 to change. When the slider 32 moves upward inside the fixed block 11, the force of the wind blowing the banner 3 to drive the rotating shaft 4 to move downward inside the fixed block 11 will increase, and vice versa.

[0059] Secondly, please also refer to Figures 3 to 9 The torsion portion 40 includes an impeller 45, which is mounted on the outside of the rotating shaft 4 and located on the outside of the storage tube 2. A switching portion 50 is mounted on the impeller 45 and located on the outside of the rotating shaft 4. A ratchet b42 is mounted on one end of the switching portion 50 located inside the storage tube 2 and located on the outside of the rotating shaft 4. The ratchet b42 is rotatably connected to a fixed plate 41 on the side away from the switching portion 50. The fixed plate 41 is rotatably connected to the rotating shaft 4. One end of the coil spring 13 away from the ratchet a12 is fixedly connected to the fixed plate 41. A pawl b43 is rotatably connected to the side of the fixed plate 41 close to the ratchet b42. A torsion spring b44 is provided on the pawl b43. One end of the torsion spring b44 is fixedly connected to the ratchet b43, and the other end of the torsion spring b44 is fixedly connected to the fixed plate 41. The ratchet b42 is clamped with the ratchet b42.

[0060] As mentioned above, in the process of the drone body 1 driving the banner 3 to fly, the wind drives the impeller 45 to rotate, causing the ratchet b42 to rotate accordingly. Through the engagement between the pawl b43 and the ratchet b42, the fixed plate 41 is driven to rotate accordingly, thereby causing the coil spring 13 to wind, increasing the torsional force generated by the coil spring 13 on the ratchet a12, thereby increasing the speed at which the winding portion 10 drives the rotating shaft 4 to rotate, thereby accelerating the speed at which the banner 3 is stored in the storage tube 2.

[0061] Secondly, please also refer to Figures 3 to 11The switching part 50 includes a connecting tube 51 and a hook 52. The connecting tube 51 is rotatably connected to the side of the ratchet b42 close to the impeller 45. The hook 52 is installed on the side of the connecting tube 51 away from the ratchet b42. A clamping block 53 is provided on the side of the impeller 45 close to the hook 52. The clamping block 53 is engaged with the hook 52. Limiting blocks 54 are fixed at both ends of the rotating shaft 4. A compression spring b55 is provided on the outer side of the rotating shaft 4 and between the impeller 45 and the limiting block 54. An electromagnet 56 is provided on the side of the cover plate 5 located inside the storage tube 2.

[0062] It should be noted that a magnetic ring is provided on one side of the impeller 45 close to the cover plate 5 and close to the outer side of the electromagnet 56. When the electromagnet 56 is energized to generate magnetism, the electromagnet 56 can push the magnetic ring away from the cover plate 5 through the opposite magnetism of the magnetic ring and the electromagnet 56 when it is energized, thereby eliminating the impeller 45 from driving the fixed plate 41 to rotate.

[0063] It is worth mentioning that a counterweight rod 6 is fixed to the lower end of the banner 3 to enhance the stability of the drone body 1 when driving the banner 3 to fly. At the same time, the counterweight rod 6 can generate a downward pulling force on the banner 3.

[0064] As mentioned above, after the strong wind causes the banner 3 to be retracted into the storage tube 2, the wind speed becomes smaller and the drone body 1 is in a safe flying style, the electromagnet 56 is energized to generate a repulsive force, so that the impeller 45 moves away from the cover plate 5, thereby canceling the engagement between the block 53 and the hook 52, thereby canceling the restriction on the hook 52, so that when the impeller 45 rotates, the connecting tube 51 is canceled from following the rotation, thereby canceling the restriction on the ratchet b42. At the same time, when the impeller 45 moves away from the cover plate 5, the compression spring b55 is compressed to generate an elastic force, and the drone body 1 drives the banner 3 to fly. Through the portion of the banner 3 exposed from the storage tube 2, the weight of the counterweight rod 6 and the directional pulling force generated by the wind blowing the banner 3 on the drone body 1 when it is flying will drive the rotating shaft 4 to rotate in the opposite direction, so that the ratchet a12 rotates accordingly, and the ratchet pawl a14 is on the ratchet a1 2 slides on the surface, the ratchet a12 drives the coil spring 13 and makes the fixed plate 41 rotate in the opposite direction, the pawl b43 is engaged with the ratchet b42, which will drive the ratchet b42 to rotate. At this time, the impeller 45 is away from the cover plate 5, and the block 53 and the hook 52 are in a separated state. Therefore, the rotation of the impeller 45 will not affect the reverse rotation of the ratchet b42, so that the banner 3 can be pulled out from the inside of the storage tube 2. After the banner 3 is pulled out to an appropriate length, the power to the electromagnet 56 is canceled, and the impeller 45 is close to the cover plate 5 through the elastic force of the compression spring b55, so that the block 53 and the hook 52 are engaged. When the impeller 45 rotates, the fixed plate 41 rotates accordingly, which will twist the coil spring 13, thereby increasing the torsional force generated by the coil spring 13 on the ratchet a12, so that the banner 3 can be put into the storage tube 2 when it is subjected to a stronger wind next time.

[0065] Secondly, please also refer to Figures 3 to 11A friction member 60 is provided on the side of the ratchet b42 close to the connecting tube 51. The friction member 60 includes an arc block 62. A slide rod 61 is fixed to the upper end of the arc block 62. The slide rod 61 is slidably connected to the ratchet b42. A compression spring c63 is provided on the outer side of the slide rod 61 and between the compression spring c63 and the ratchet b42.

[0066] It should be noted that a friction pad is provided on one side of the arc block 62 close to the connecting pipe 51 to ensure the friction between the arc block 62 and the connecting pipe 51 .

[0067] As described above, as the impeller 45 continues to rotate, causing the coil spring 13 to continuously increase its torsional force, the reaction force generated by the coil spring 13 on the fixed plate 41 also gradually increases. When the reaction force is greater than the friction force between the connecting tube 51 and the arc block 62, the impeller 45 rotates, causing the connecting tube 51 and the arc block 62 to rotate, causing the connecting tube 51 to rotate on one side of the ratchet b42, thereby causing the ratchet b42 to no longer drive the coil spring 13 to twist, thereby preventing the coil spring 13 from twisting excessively and increasing the torsional force of the coil spring 13. At the same time, the impeller 45 can rotate on its own to reduce wind resistance.

[0068] The working principle of the present invention is as follows: when there is strong wind, the wind blows the banner 3, so that the banner 3 drives the rotating shaft 4 to move downward inside the storage tube 2, so that the pressure regulating part 30 is compressed by force. When the banner 3 drives the rotating shaft 4 to move downward inside the storage tube 2 to trigger the operation of the winding part 10, the winding part 10 drives the rotating shaft 4 to rotate, so that the banner 3 is stored inside the storage tube 2, thereby avoiding the influence of the strong wind on the banner 3 and further endangering the flight safety of the UAV body 1, thereby improving the safety. By adjusting the pressure regulating part 30, the tension when the wind blows the banner 3 and drives the rotating shaft 4 to move inside the storage tube 2 can be adjusted. Furthermore, the pulling force that causes the rotating shaft 4 to move inside the storage tube 2 when the wind blows the banner 3 can be adjusted according to the banners 3 of different sizes, thereby improving adaptability. Through the operation of the twisting part 40, the torque of the winding part 10 is increased to increase the speed at which the winding part 10 drives the rotating shaft 4 to rotate, and to increase the speed at which the banner 3 is stored in the storage tube 2, so as to reduce the time that the wind blows the banner 3 in windy weather and reduce the time that strong winds cause instability to the flight of the drone body 1. When the banner 3 is pulled out of the storage tube 2, the switching part 50 will cause the twisting part 40 to cancel the torque applied to the winding part 10, thereby increasing the speed at which the banner 3 is pulled out.

[0069] The above is only a preferred embodiment of the present invention. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principles of the present invention, and these improvements and modifications should also be considered as the protection scope of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to the conventional means in the art unless otherwise specified and limited.

Claims

1. A high-altitude drone for advertising, characterized in that: include: A drone body (1), wherein a storage tube (2) is installed at the lower end of the drone body (1), covers (5) are provided at both ends of the storage tube (2), and a rotating shaft (4) is installed inside the cover (5); A banner (3), wherein the banner (3) is mounted on the outside of the rotating shaft (4); A winding portion (10), the winding portion (10) being installed on the outside of the rotating shaft (4) and close to the cover plate (5), and the winding portion (10) being used to drive the rotating shaft (4) to store the banner (3) into the interior of the storage tube (2); A voltage regulating portion (30), the voltage regulating portion (30) being installed inside the winding portion (10), and the voltage regulating portion (30) being used to adjust the triggering distance of the winding portion (10); A torsion portion (40), the torsion portion (40) being mounted on the outside of the rotating shaft (4), the torsion portion (40) being used to increase the torsion of the winding portion (10); A switching part (50) is installed on the twisting part (40), and the switching part (50) is used to enable the twisting part (40) to cancel the torsion force applied to the winding part (10) when the banner (3) is pulled out from the inside of the storage tube (2).

2. The advertising device for drone according to claim 1, characterized in that: The winding portion (10) comprises a ratchet a (12) and a coil spring (13); the ratchet a (12) is fixed on the outside of the rotating shaft (4) and close to the cover plate (5); the coil spring (13) is arranged on the outside of the rotating shaft (4); one end of the coil spring (13) is fixedly connected to the ratchet a (12); the other end of the coil spring (13) is fixedly connected to the torsion portion (40); a fixed spring is installed on the side of the storage tube (2) close to the ratchet a (12) and away from the cover plate (5). A block (11) is provided, a trigger member (20) is installed on the side of the fixed block (11) close to the ratchet a (12), a pawl a (14) is rotatably connected to the side of the trigger member (20) close to the ratchet a (12), the pawl a (14) is engaged with the ratchet a (12), a torsion spring a (15) is arranged on the pawl a (14), one end of the torsion spring a (15) is fixedly connected to the pawl a (14), and the other end of the torsion spring a (15) is fixedly connected to the trigger member (20).

3. The advertising device for drone according to claim 2, characterized in that: The trigger member (20) comprises a connecting plate (21), the connecting plate (21) being slidably connected to a side of the fixed block (11) close to the ratchet a (12), and the connecting plate (21) being rotatably connected to the rotating shaft (4), a pull rod (22) being fixed to the upper end of the ratchet a (14), a stopper (23) being fixed to the upper end of the pull rod (22), and a fixing frame (24) being fixed to a side of the fixed block (11) close to the ratchet a (12) and above the ratchet a (14).

4. The advertising device for a drone according to claim 2, characterized in that: The pressure regulating part (30) comprises a compression spring a (31), which is arranged inside the fixed block (11) and located below the rotating shaft (4); a slider (32) is slidably connected inside the fixed block (11) and located below the compression spring a (31); a screw rod (33) is rotatably connected to the lower end of the slider (32); and the screw rod (33) is threadedly connected to the storage tube (2).

5. The advertising device for drone according to claim 2, characterized in that: The torsion part (40) comprises an impeller (45), the impeller (45) being mounted on the outside of the rotating shaft (4) and located on the outside of the storage tube (2), a switching part (50) being mounted on the impeller (45) and located on the outside of the rotating shaft (4), a ratchet wheel b (42) being mounted on one end of the switching part (50) located inside the storage tube (2) and located on the outside of the rotating shaft (4), a side of the ratchet wheel b (42) away from the switching part (50) being rotatably connected to a fixing plate (41), the fixing plate (41) and the fixing plate (41) being connected to the switching part (50) The rotating shaft (4) is rotatably connected, one end of the coil spring (13) away from the ratchet a (12) is fixedly connected to the fixed plate (41), and the side of the fixed plate (41) close to the ratchet b (42) is rotatably connected with a pawl b (43), and a torsion spring b (44) is provided on the pawl b (43), one end of the torsion spring b (44) is fixedly connected to the ratchet b (43), and the other end of the torsion spring b (44) is fixedly connected to the fixed plate (41), and the ratchet b (42) is clamped with the ratchet b (42).

6. The advertising device for a drone according to claim 5, characterized in that: The switching part (50) comprises a connecting tube (51) and a hook (52); the connecting tube (51) is rotatably connected to a side of the ratchet b (42) close to the impeller (45); the hook (52) is installed on a side of the connecting tube (51) away from the ratchet b (42); a clamping block (53) is provided on a side of the impeller (45) close to the hook (52); the clamping block (53) is clamped with the hook (52); limiting blocks (54) are fixed at both ends of the rotating shaft (4); a compression spring b (55) is provided on the outer side of the rotating shaft (4) and between the impeller (45) and the limiting block (54); and an electromagnet (56) is provided on a side of the cover plate (5) located inside the storage tube (2).

7. The advertising device for a drone according to claim 6, characterized in that: A magnetic ring is provided on one side of the impeller (45) close to the cover plate (5) and close to the outer side of the electromagnet (56).

8. The advertising device for a drone according to claim 6, characterized in that: A friction member (60) is provided on one side of the ratchet b (42) close to the connecting tube (51), and the friction member (60) comprises an arc block (62). A sliding rod (61) is fixed to the upper end of the arc block (62), and the sliding rod (61) is slidably connected to the ratchet b (42). A compression spring c (63) is provided on the outer side of the sliding rod (61) and between the compression spring c (63) and the ratchet b (42).

9. The advertising device for a drone according to claim 8, characterized in that: A friction pad is provided on one side of the arc block (62) close to the connecting pipe (51).

10. The advertising device for drone according to claim 1, characterized in that: A counterweight rod (6) is fixed to the lower end of the banner (3).

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