Unmanned aerial vehicle with automatic lifting cargo bearing device

Abstract

The invention discloses an unmanned aerial vehicle with an automatic lifting cargo bearing device, and relates to the technical field of cargo loading and unloading unmanned aerial vehicles. An unmanned aerial vehicle with an automatic lifting cargo bearing device comprises lifting arms symmetrically arranged below the unmanned aerial vehicle; the carrying box is arranged between the symmetrical lifting arms; the lifting assembly is arranged on the unmanned aerial vehicle, the lifting assembly comprises a connecting shaft, winding drums are installed at the two ends of the connecting shaft, the connecting shaft is rotationally connected to the lower portion of the unmanned aerial vehicle, and the connecting shaft is driven by a motor to rotate; in the lifting process of the lifting rope, the volume of the carrying box can be automatically changed, the storage volume in the carrying box can be adjusted in real time according to the cargo quantity through the change of the volume, the effects of clamping and limiting cargos and the like are achieved, in addition, the box cover can be automatically closed and opened when the carrying box is lifted, and the carrying box is convenient to use. And the influence of manual intervention on the hovering stability of the unmanned aerial vehicle is reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of cargo loading and unloading drones, and in particular relates to a drone equipped with an automatic lifting cargo carrying device. Background Art

[0002] Unmanned aerial vehicles, also known as drones, are unmanned aircraft that are controlled by radio remote control equipment and self-contained program control devices, or are operated completely or intermittently autonomously by an onboard computer. Compared with manned aircraft, drones are often more suitable for tasks that are not suitable for manual handling. Drones can be divided into military and civilian applications according to their application areas. In the military, drones are divided into reconnaissance aircraft, target aircraft, and cargo aircraft. In the civilian sector, drones are used in many fields such as aerial photography, agriculture, plant protection, micro selfies, express delivery, disaster relief, wildlife observation, infectious disease monitoring, surveying and mapping, news reporting, power inspections, disaster relief, and film and television shooting.

[0003] Because drones don't require a cockpit, they significantly reduce the amount of space wasted and overall weight, resulting in better performance. Currently, drones are primarily small, and because they can be moved by remote control, they're well-suited for aerial photography and transporting items. They can also be used for transporting goods and dropping supplies during disaster relief efforts.

[0004] Currently, drones are widely used in the field of cargo transportation. When carrying cargo, a relevant cargo box is installed on the drone, and the cargo is placed in the cargo box to realize drone cargo transportation. However, there are several problems with the cargo box:

[0005] 1. The cargo box is usually fixed. When picking up or putting down cargo, the drone needs to land and stop. Otherwise, the cargo box will be too close to the propeller blades, which will cause safety problems.

[0006] 2. Since most cargo boxes are fixed, it is impossible to retrieve cargo while hovering, which indirectly affects flight efficiency.

[0007] To this end, a drone with a lifting cargo carrying device is proposed to solve the above-mentioned problems. Summary of the Invention

[0008] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a drone with an automatic lifting cargo carrying device that can overcome the above problems or at least partially solve the above problems.

[0009] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is: a drone with an automatic lifting cargo carrying device, comprising: a landing arm, symmetrically arranged under the drone; a cargo box, arranged between the symmetrical landing arms; a lifting component, arranged on the drone, the lifting component including a connecting shaft with a winding drum installed at both ends, the connecting shaft is rotatably connected to the bottom of the drone, and the connecting shaft is driven to rotate by a motor; a lifting rope is respectively wound around and connected to the two winding drums, and one end of the two winding drums is connected to the cargo box; the cargo box is raised by winding the lifting rope by the winding drum, and the volume of the cargo box is reduced during the rising process to automatically clamp the cargo and automatically close the box cover; the lifting rope is released by the winding drum to lower the cargo box, and the box cover is automatically opened during the descent, and the volume of the cargo box is increased.

[0010] Preferably, the lifting arm is in an eight-shape, a limiting slide groove is provided on the inner side of the lifting arm, a guide rail is slidably connected in the limiting slide groove, a travel block is provided at the end of the guide rail, a limiting frame is installed at the top of the guide rail, and a limiting block is installed at the end of the lifting arm.

[0011] Preferably, the cargo box includes box 1 and box 2, and the box 1 and box 2 are slidably connected. Sliders are installed on the side walls of the box 1 and box 2, and the sliders are slidably connected to the guide rails. Slide rails are installed on both side surfaces of the box 1, and a slide seat is installed on the box 2, and the slide seat is slidably connected to the slide rails.

[0012] Preferably, an electromagnet is provided at the top of the inner side surface of the lifting arm, an iron block is provided at the top of the guide rail, a position sensor is provided at the upper end of the inner side surface of the limiting slide, an electromagnet and a position sensor are provided on the travel block, and an iron block is installed on the bottom surface of the slider.

[0013] Preferably, a support foot is installed at the end of the lifting arm.

[0014] Preferably, the box cover includes an upper cover 1 and an upper cover 2 that are slidably connected to each other. The upper cover 1 and the upper cover 2 are respectively rotatably connected to the box 1 and the box 2 through a torsion spring. The upper cover 1 and the upper cover 2 are symmetrically arranged on the cargo box. The inner walls of the box 1 and the box 2 are fixedly connected with limited fixing blocks.

[0015] Furthermore, the inner walls of box 1 and box 2 are fixedly connected with guide tubes, and the lifting rope passes through the guide tubes; the symmetrical upper cover 1 and upper cover 2 are respectively fixedly connected with a pull rope 1, one end of which passes through the end of the guide tube and is fixedly connected to the lifting rope.

[0016] Preferably, a slidingly connected rotating plate 1 and a rotating plate 2 are symmetrically arranged under the cargo box, and the rotating plate 1 and the rotating plate 2 are respectively rotatably connected to the box 1 and the box 2, and the rotating plate 1 and the box 1 are connected by an elastic sheet; when the UAV lands, the symmetrical rotating plate 1 and the rotating plate 2 are in an eight-shape to provide support for the landing of the UAV; when the cargo box is raised, the symmetrical rotating plate 1 and the rotating plate 2 are in a V-shape to guide the airflow impacting the cargo box.

[0017] Preferably, two pull ropes 2 are fixedly connected to the lifting ropes in the symmetrical guide tubes, and one end of the two groups of pull ropes 2 are fixedly connected to the adjacent rotating plate 1 and rotating plate 2 respectively.

[0018] Furthermore, weight-reducing holes are provided on the rotating plate 1 and the rotating plate 2.

[0019] After adopting the above technical solution, the present invention has the following beneficial effects compared with the existing technology: the present invention can automatically change the volume of the cargo box during the lifting process through the lifting rope, and the change in volume can realize real-time adjustment of the storage volume in the cargo box according to the amount of cargo, and achieve the effects of clamping and limiting the cargo. In addition, the cargo box can also automatically close and open the box lid during lifting, reducing the impact of manual intervention on the hovering stability of the drone. In addition, the lifting of the cargo box can also automatically control the rotation angle of the lower turntable one and turntable two, so that the turntable one and turntable two can not only provide auxiliary support for the landing of the drone, but also reduce the impact of airflow on the cargo box during the flight of the drone, thereby improving the stability of the drone flight.

[0020] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In the attached figure:

[0022] Figure 1 This is a schematic diagram of the three-dimensional structure of a drone with an automatic lifting cargo carrying device proposed by the present invention. Figure 1 ;

[0023] Figure 2 This is a schematic diagram of the three-dimensional structure of a drone with an automatic lifting cargo carrying device proposed by the present invention. Figure 2 ;

[0024] Figure 3 This is a schematic structural diagram of bevel gear 1 and bevel gear 2 of a drone with an automatic lifting cargo carrying device proposed by the present invention;

[0025] Figure 4 This is a structural schematic diagram of a turning plate 1 and a pulling rope 2 of a drone with an automatic lifting cargo carrying device proposed by the present invention;

[0026] Figure 5 This is a structural diagram of the landing arm, guide rail, and travel block of a UAV with an automatic lifting cargo carrying device proposed by the present invention;

[0027] Figure 6 This is a structural diagram of a limiting slide and a slider of a UAV with an automatic lifting cargo carrying device proposed by the present invention;

[0028] Figure 7 This is a structural diagram of a limiting frame and a limiting fixing block of a UAV with an automatic lifting cargo carrying device proposed by the present invention;

[0029] Figure 8 This is a structural schematic diagram of box 1 and box 2 of a drone with an automatic lifting cargo carrying device proposed by the present invention;

[0030] Figure 9 This is a schematic structural diagram of a rotating plate 1, a rotating plate 2, and an elastic sheet of a drone with an automatic lifting cargo carrying device proposed by the present invention;

[0031] Figure 10 This is a schematic structural diagram of a pull rope 1 and a pull rope 2 of a drone with an automatic lifting cargo carrying device proposed by the present invention;

[0032] Figure 11 This is a structural schematic diagram of the upper cover 1 and upper cover 2 of a drone with an automatic lifting cargo carrying device proposed by the present invention;

[0033] Figure 12 This is a diagram showing the connection between the lifting rope, pull rope 1, and pull rope 2;

[0034] Figure 13 This is a schematic diagram of the structure of a guide tube of a drone with an automatic lifting cargo carrying device proposed by the present invention. Figure 1 ;

[0035] Figure 14 This is a schematic diagram of the structure of a guide tube of a drone with an automatic lifting cargo carrying device proposed by the present invention. Figure 2 .

[0036] In the figure: 1. UAV; 11. Landing arm; 111. Position sensor 1; 12. Support leg; 13. Limit slide; 131. Electromagnet 1; 14. Guide rail; 141. Travel block; 142. Electromagnet 2; 143. Position sensor 2; 144. Iron block 1; 15. Limit frame; 151. Limit fixing block; 16. Slider; 161. Iron block 2; 2. Bevel gear 1; 20. Connecting shaft; 21. Bevel gear 2; 22. Winding drum; 23. Lifting rope; 24. Guide tube; 25. Pull rope 1; 26. Pull rope 2; 3. Carrying box; 30. Fixed block; 31. Box 1; 311. Upper cover 1; 312. Slide rail; 313. Slide seat; 314. Turn plate 1; 315. Elastic sheet; 32. Box 2; 321. Upper cover 2; 322. Turn plate 2. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0038] The following is combined with Figure 1 -Attached Figure 14 , describes in detail the technical solutions provided by each embodiment of the present invention.

[0039] Example: Refer to Figures 1-12 A drone with an automatic lifting cargo carrying device includes: a landing arm 11, symmetrically arranged below the drone 1; a cargo box 3, arranged between the symmetrical landing arms 11; a lifting assembly, arranged on the drone 1, and the lifting assembly includes a connecting shaft 20 with a winding drum 22 installed at both ends. The connecting shaft 20 is rotatably connected to the bottom of the drone 1 and is driven to rotate by a motor. A bevel gear 1 2 and a bevel gear 2 21 are respectively installed on the output end of the motor and the connecting shaft 20. The bevel gear 1 2 and the bevel gear 2 21 are meshed with each other. This design is to keep the weight of the motor as close to the drone as possible. 1, which is convenient for balancing the center of gravity of the drone 1. In addition, some sections of the connecting shaft 20 and the bevel gear 1 2 and the bevel gear 2 21 are covered and protected by protective covers; the lifting ropes 23 are respectively wound and connected to the two winding drums 22, and one end of the two winding drums 22 is connected to the cargo box 3; the lifting ropes 23 are wound by the winding drums 22 to make the cargo box 3 rise, and the volume of the cargo box 3 is reduced during the rising process to automatically clamp the goods and automatically close the box cover; the lifting ropes 23 are released by the winding drums 22 to make the cargo box 3 descend, and the volume of the cargo box 3 increases during the descent, and the box cover automatically opens.

[0040] The lifting arm 11 is in an eight-shaped shape, and a limiting slide groove 13 is provided on the inner side of the lifting arm 11. A guide rail 14 is slidably connected in the limiting slide groove 13, and a travel block 141 is provided at the end of the guide rail 14. A limiting frame 15 is installed at the top of the guide rail 14, and a limiting fixed block 151 is installed at the end of the lifting arm 11. The setting of the limiting frame 15 and the limiting fixed block 151 can prevent the guide rail 14 from slipping off the lifting arm 11.

[0041] The cargo box 3 includes box 1 31 and box 2 32, which are slidably connected to each other; sliders 16 are installed on the side walls of box 1 31 and box 2 32, and the sliders 16 are slidably connected to the guide rails 14, and slide rails 312 are installed on both side surfaces of box 1 31, and a slide seat 313 is installed on box 2 32, and the slide seat 313 is slidably connected to the slide rails 312.

[0042] An electromagnet 131 is provided at the top of the inner side of the lifting arm 11, an iron block 144 is provided at the top of the guide rail 14, a position sensor 111 is provided at the upper end of the inner side of the limiting slide 13, an electromagnet 142 and a position sensor 143 are provided on the travel block 141, and an iron block 161 is installed on the bottom surface of the slider 16.

[0043] The box cover includes an upper cover 1 311 and an upper cover 2 321 that are slidably connected to each other. The upper cover 1 311 and the upper cover 2 321 are respectively rotatably connected to the box 1 31 and the box 2 32 through a torsion spring. The upper cover 1 311 and the upper cover 2 321 are symmetrically arranged on the cargo box 3, and the inner walls of the box 1 31 and the box 2 32 are symmetrically fixed with fixed blocks 30.

[0044] The inner walls of box 1 31 and box 2 32 are fixedly connected with guide tubes 24. The guide tubes 24 are designed to guide and limit the lifting ropes 23.

[0045] In some embodiments, the guide tube 24 is Figure 13 ;

[0046] In some embodiments, the guide tube 24 is structured as shown in FIG. Figure 14 The shape design of the guide tube 24 further stabilizes the release and reeling of the lifting rope 23 on the reeling drum 22;

[0047] The lifting rope 23 passes through the guide tube 24. The symmetrical upper cover 1 311 and upper cover 2 321 are respectively fixedly connected with a pull rope 1 25. One end of the pull rope 1 25 passes through the end of the guide tube 24 and is fixedly connected to the lifting rope 23. The end of the lifting arm 11 is equipped with a support leg 12.

[0048] When using the drone 1, the drone 1 is first placed at a suitable take-off and landing site. When cargo is to be loaded, the motor drives the connecting shaft 20 to rotate, causing the reel 22 to release the lifting rope 23, and the cargo box 3 descends on the guide rail 14 under the action of gravity. When the cargo box 3 contacts the ground, the reel 22 continues to release, causing the upper cover 1 311 and the upper cover 2 321 to automatically open under the action of the torsion spring, thereby facilitating the loading of cargo into the cargo box 3.

[0049] After the cargo is put in, the motor is started again, and the motor drives the connecting shaft 20 to reverse, and the winding drum 22 begins to wind up the lifting rope 23, and the lifting rope 23 pulls the cargo box 3 to rise. During the rising process, box 1 31 and box 2 32 are designed in an eight-shaped shape due to the lifting arm 11, which will cause box 1 31 and box 2 32 to slide relative to each other, and the volume of the cargo box 3 is reduced. On the one hand, it can reduce the free space and reduce the risk of large-scale shaking of the cargo and causing unstable flight of the drone 1. On the other hand, by reducing the volume of the cargo box 3 through relative sliding of box 1 31 and box 2 32, it can realize automatic clamping of the internal cargo, thereby improving the stability of the cargo flight.

[0050] In addition, when the luggage box 3 is pulled up by the lifting rope 23, the box lid will automatically close to cover the top of the luggage box 3. The specific implementation method is as follows: when the lifting rope 23 is reeled in, the lifting rope 23 will pull the pull rope 1 25. After the pull rope 1 25 is subjected to force, it will pull the upper cover 1 311 and the upper cover 2 321 to rotate and thus achieve the cover on the luggage box 3. The closing of the box lid can further limit the goods in the luggage box 3 and further prevent shaking.

[0051] In a scenario of picking up or placing cargo, the drone 1 is hovering in the air, and the lifting rope 23 is released by the reel 22, causing the slider 16 on the cargo box 3 to descend to the travel block 141. The second position sensor 143 detects the slider 16, and this method causes the cargo box 3 to be lowered.

[0052] When it is necessary to further lower the height of the cargo box 3 compared to the drone 1, the drone remote control or drone remote control device is operated to control the electromagnet 131 to be powered off, so that the guide rail 14 and the landing arm 11 are disconnected and fixed, and the lifting rope 23 is continued to be loosened. At this time, the guide rail 14 slides on the landing arm 11 and drives the cargo box 3 to slide downward. During the downward movement of the guide rail 14, the cargo box 3 continues to expand its volume accordingly, and at the same time, the cargo box 3 continues to descend in height, so that the cargo box 3 continues to increase the safe distance from the drone 1, which is convenient for placing or removing goods from the cargo box 3. At the same time, since the cargo box 3 is connected to the guide rail 14, and the guide rail 14 is connected to the landing arm 11, the cargo box 3 will not swing greatly in the air due to the influence of wind due to the traditional sling method.

[0053] When rising, the electromagnet 2 142 on the travel block 141 attracts the iron block 2 161 on the slider 16. When the lifting rope 23 is wound, it is first affected by the weight of the cargo box 3. When the lifting rope 23 is wound, it will pull the box cover to close on the cargo box 3, so that the box cover is blocked after contacting the fixed block 30, and then the cargo box 3 and the guide rail 14 are pulled up by the lifting rope 23. When the top of the guide rail 14 reaches the top of the limiting slide groove 13, the position sensor 111 detects the guide rail 14, so that the electromagnet 131 attracts the iron block 144 on the guide rail 14, and fixes the guide rail 14 to the lifting arm 11. Then the electromagnet 2 142 can be de-energized, so that the lifting rope 23 continues to pull the cargo box 3 to slide up on the guide rail 14, and continue to reduce the volume of the cargo box 3, and further limit the cargo.

[0054] In some embodiments, reference Figure 3 、 Figure 4 、 Figure 9 , a slidingly connected rotating plate 1 314 and a rotating plate 2 322 are symmetrically arranged under the cargo box 3. The rotating plate 1 314 and the rotating plate 2 322 are respectively rotatably connected to the box 1 31 and the box 2 32, and the rotating plate 1 314 and the box 1 31 are connected by an elastic sheet 315; when the drone 1 lands, the symmetrical rotating plate 1 314 and the rotating plate 2 322 are in an eight-shape to provide support for the landing of the drone 1; when the cargo box 3 is raised, the symmetrical rotating plate 1 314 and the rotating plate 2 322 are in a V-shape to guide the airflow impacting the cargo box 3.

[0055] Two pull ropes 26 are fixedly connected to the lifting ropes 23 in the symmetrical guide tubes 24. One end of the two sets of pull ropes 26 is fixedly connected to the adjacent rotating plate 1 314 and the rotating plate 2 322 respectively.

[0056] When the lifting rope 23 is reeled in to close the box lid, the lifting rope 23 will simultaneously pull the pull rope 26, causing the originally eight-shaped rotating plate 1 314 and the rotating plate 2 322 to shrink toward the bottom of the cargo box 3, and then form a V shape at the bottom of the cargo box 3. This allows the airflow on the windward side of the cargo box 3 to be quickly diverted to the bottom of the cargo box 3 by the rotating plate 1 314 and the rotating plate 2 322 during the flight of the drone 1, thereby reducing the impact of the airflow on the cargo box 3.

[0057] When the lifting rope 23 is loosened during operation and the box cover is automatically opened, the rotating plate 1 314 and the rotating plate 2 322 will also be pushed to reset due to the loosening of the lifting rope 23 and the restoration of the elastic piece 315, so that the rotating plate 1 314 and the rotating plate 2 322 at the bottom of the cargo box 3 are symmetrically formed into an eight-shaped shape, and provide additional auxiliary support for the cargo box 3 to contact the ground and the landing of the drone 1 compared to the support legs 12.

[0058] In some embodiments, weight-reducing holes are provided on the rotating plate 1 314 and the rotating plate 2 322. The weight-reducing holes can, on the one hand, reduce the weight of the rotating plate 1 314 and the rotating plate 2 322 and improve the lightweight of the drone 1. On the other hand, the weight-reducing holes can make the windward airflow pass through the rotating plate 1 314 and the rotating plate 2 322 more smoothly, reducing the turbulence and eddy currents of the airflow on the surface of the rotating plate, which not only reduces the wind resistance of the rotating plate, but also reduces the noise generated by the airflow disturbance.

[0059] In some embodiments, weight-reducing holes can also be opened in the box lid according to the type of cargo loaded. For example, a box lid with weight-reducing holes can be used for cargo with larger volume. When the cargo is loose, the box lid with weight-reducing holes is not used to prevent the cargo from leaking from the weight-reducing holes, or a protective mesh is adhered to the inner side of the box lid with weight-reducing holes.

[0060] Therefore, the design of the drone 1 can automatically change the volume of the cargo box 3 during the lifting process through the lifting rope 23, and the change in volume can realize real-time adjustment of the storage volume in the cargo box 3 according to the amount of cargo, and achieve the effects of clamping and limiting the cargo. In addition, the cargo box 3 can also automatically close and open the box lid during lifting, reducing the impact of manual intervention on the hovering stability of the drone 1. In addition, the lifting of the cargo box 3 can also automatically control the rotation angle of the lower turn plate 1 314 and the turn plate 2 322, so that the turn plate 1 314 and the turn plate 2 322 can not only provide auxiliary support for the landing of the drone 1, but also reduce the impact of airflow on the cargo box 3 during the flight of the drone 1, thereby improving the flight stability of the drone 1.

[0061] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as above in terms of a preferred embodiment, it is not intended to limit the present invention. Any technician familiar with the present invention can make slight changes or modifications to equivalent embodiments using the above-mentioned technical contents without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the solution of the present invention.

Claims

1. A drone equipped with an automatic lifting cargo carrying device, characterized in that: include: A landing arm (11) is symmetrically arranged below the drone (1); A cargo box (3) is arranged between the symmetrical lifting and lowering arms (11); A lifting assembly is provided on the drone (1), the lifting assembly comprising a connecting shaft (20) with winding drums (22) mounted at both ends, the connecting shaft (20) being rotatably connected to the bottom of the drone (1) and driven to rotate by a motor; The lifting rope (23) is respectively wound around the two winding drums (22), and one end of the two winding drums (22) is connected to the cargo box (3); The lifting rope (23) is wound up by the winding drum (22) to raise the cargo box (3), and the volume of the cargo box (3) is reduced during the raising process to automatically clamp the cargo and automatically close the box cover; The lifting rope (23) is released by the winding drum (22) to cause the cargo box (3) to descend. During the descent process, the volume of the cargo box (3) increases, and the box cover automatically opens.

2. The UAV with an automatic lifting cargo carrying device according to claim 1, characterized in that: The lifting arm (11) is in an eight-shaped shape, and a limiting slide groove (13) is provided on the inner side of the lifting arm (11), a guide rail (14) is slidably connected in the limiting slide groove (13), a travel block (141) is provided at the end of the guide rail (14), a limiting frame (15) is installed at the top end of the guide rail (14), and a limiting block (151) is installed at the end of the lifting arm (11).

3. The UAV with an automatic lifting cargo carrying device according to claim 2, characterized in that: The cargo box (3) comprises a box 1 (31) and a box 2 (32), wherein the box 1 (31) and the box 2 (32) are slidably connected; Sliders (16) are installed on the side walls of the box 1 (31) and the box 2 (32), and the slides (16) are slidably connected to the guide rails (14). Slide rails (312) are installed on both side surfaces of the box 1 (31), and a slide seat (313) is installed on the box 2 (32), and the slide seat (313) is slidably connected to the slide rails (312).

4. The UAV with an automatic lifting cargo carrying device according to claim 3, characterized in that: An electromagnet (131) is provided at the top end of the inner side surface of the lifting arm (11), an iron block (144) is provided at the top end of the guide rail (14), a position sensor (111) is provided at the upper end of the inner side surface of the limiting slide (13), an electromagnet (142) and a position sensor (143) are provided on the travel block (141), and an iron block (161) is installed on the bottom surface of the slider (16).

5. The UAV with an automatic lifting cargo carrying device according to any one of claims 2 to 4, characterized in that: A support foot (12) is installed at the end of the lifting arm (11).

6. The UAV with an automatic lifting cargo carrying device according to any one of claims 2 to 4, characterized in that: The box cover comprises an upper cover 1 (311) and an upper cover 2 (321) which are slidably connected to each other. The upper cover 1 (311) and the upper cover 2 (321) are rotatably connected to the box 1 (31) and the box 2 (32) respectively through a torsion spring. The upper cover 1 (311) and the upper cover 2 (321) are symmetrically arranged on the cargo box (3). The inner side walls of the box 1 (31) and the box 2 (32) are symmetrically fixedly connected with a limited fixed block (30).

7. The UAV with an automatic lifting cargo carrying device according to claim 6, characterized in that: The inner side walls of the box 1 (31) and the box 2 (32) are both fixedly connected with a guide tube (24), and the lifting rope (23) is inserted into the guide tube (24); A pull rope 1 (25) is fixedly connected to the symmetrical upper cover 1 (311) and the upper cover 2 (321), respectively. One end of the pull rope 1 (25) passes through the end of the guide tube (24) and is fixedly connected to the lifting rope (23).

8. The UAV with an automatic lifting cargo carrying device according to claim 7, characterized in that: A rotating plate 1 (314) and a rotating plate 2 (322) are symmetrically provided below the cargo box (3) and are connected in a sliding manner. The rotating plate 1 (314) and the rotating plate 2 (322) are respectively connected in rotation to the box 1 (31) and the box 2 (32). The rotating plate 1 (314) and the box 1 (31) are connected via an elastic sheet (315). When the UAV (1) lands, the symmetrical rotating plate 1 (314) and the rotating plate 2 (322) are in an eight-shaped shape to provide support for the landing of the UAV (1); When the cargo box (3) is raised, the symmetrical rotating plate 1 (314) and the rotating plate 2 (322) are in a V-shape, so as to guide the airflow impacting the cargo box (3).

9. The UAV with an automatic lifting cargo carrying device according to claim 8, characterized in that: Two pull ropes 2 (26) are fixedly connected to the lifting ropes (23) in the symmetrical guide tubes (24), and one end of the two groups of pull ropes 2 (26) is fixedly connected to the adjacent rotating plate 1 (314) and rotating plate 2 (322).

10. The UAV with an automatic lifting cargo carrying device according to claim 9, characterized in that: The rotating plate 1 (314) and the rotating plate 2 (322) are provided with weight-reducing holes.

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