An unmanned aerial vehicle for carrying goods with reduced wind resistance

Abstract

This invention discloses a cargo-carrying drone with reduced wind resistance. The drone comprises a main body with wings mounted on both sides. It includes: an adjusting rod that extends movably through the interior of a supporting frame; a movable block movably sleeved on the outer side of the adjusting rod, with a connecting plate fixed to the bottom of the movable block; a cargo frame movably mounted below the connecting plate; a cargo cavity formed inside the cargo frame; and a winding shaft that extends movably through the top of the cargo frame. One end of a first guide rope is fixedly connected to the outer side of the winding shaft, and the movable shaft passes through the middle of the movable plate. This cargo-carrying drone with reduced wind resistance enables rapid placement and retrieval of items, ensuring the stability of items during drone flight. Furthermore, by reducing wind resistance after loading, it minimizes the impact on the drone's flight.

Description

Technical Field

[0001] This invention relates to the field of unmanned aerial vehicle (UAV) technology, specifically to a UAV for carrying cargo that can reduce wind resistance. Background Technology

[0002] Drones can be used for terrain surveying and can also carry goods as needed, enabling rapid transportation of small items. They are commonly used in remote and inaccessible areas. Items are typically placed on a cargo platform at the bottom of the drone. For example, a portable cargo-carrying drone made of fiber-reinforced nylon (publication number CN211685621U) has a cargo-carrying device located under the drone body… This allows for convenient cargo carrying, easy disassembly of the cargo box, and replacement of the appropriate cargo-carrying device as needed. The cargo is securely fixed, facilitating the loading and unloading of larger items. The lightweight design contributes to good environmental performance and improves the drone's endurance, which is beneficial for delivery in remote areas. However, this portable cargo-carrying drone made of fiber-reinforced nylon still has the following drawbacks in actual use:

[0003] 1. Traditional drones experience increased drag after being loaded with cargo. As the loaded items occupy a large area, they reduce the drone's flight speed to some extent. Furthermore, traditional cargo drones lack structures to reduce wind resistance after being loaded with cargo.

[0004] 2. Furthermore, traditional drones are not convenient for limiting the items they carry, making the placement and retrieval of items cumbersome. They are also prone to items falling off during flight, and it is inconvenient to quickly assemble and disassemble the carrying platform according to the cargo requirements.

[0005] To address the aforementioned issues, there is an urgent need for innovative designs based on existing drones. Summary of the Invention

[0006] The purpose of this invention is to provide a cargo-carrying drone that can reduce wind resistance, thereby solving the problem mentioned in the background art that the flight speed of the drone is reduced to a certain extent due to the large area occupied by the loaded items, and that traditional cargo drones lack structures to reduce wind resistance after loading.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a drone for carrying goods that can reduce wind resistance, comprising a drone body, wings mounted on both sides of the drone body, and a support frame at the bottom of the drone body;

[0008] include:

[0009] An adjusting rod is movably inserted through the inside of the support frame. A movable block is movably sleeved on the outside of the adjusting rod, and a connecting plate is fixed at the bottom of the movable block. A load frame is movably installed below the connecting plate, and a fixing groove is provided at the top of the load frame, and a limiting cavity is provided below the fixing groove.

[0010] The interior of the carrying frame is provided with a storage cavity, and the bottom of the carrying frame is provided with a fixing through hole, and the bottom surface of the carrying frame is provided with a ventilation groove.

[0011] A winding shaft extends through the top of the load-bearing frame. The outer side of the winding shaft is fixedly connected to one end of a first guide rope, and the other end of the first guide rope is connected to a movable plate. The movable shaft extends through the middle of the movable plate, and the movable plate is connected to the load-bearing frame via a tension spring. A limit block is movably installed at the end of the movable plate.

[0012] Preferably, the adjusting rod is symmetrically provided with two sections of threaded grooves in opposite directions, and the adjusting rod and the movable block are threadedly connected. The top of the movable block and the lower surface of the drone body are slidably connected. Therefore, by rotating the adjusting rod, the two movable blocks can be moved closer to each other or further away from each other, and can slide against the drone body when moving.

[0013] Preferably, the connecting plate has a hook-shaped cross-section, and the bottom thickness of the connecting plate is less than the height of the limiting cavity, and the sum of the bottom widths of the two connecting plates is less than the width of the fixing groove. When the movable block moves, it can drive the connecting plate to move synchronously and move the connecting plate within the limiting cavity.

[0014] Preferably, the load frame and the connecting plate form a detachable and installable structure, and the bottom of the load frame is set with an arc surface, and the two sides of the load frame are set with a grid pattern. The load frame can be installed on the connecting plate or removed from the connecting plate as needed. The grid pattern on the two sides of the load frame not only ensures its own strength, but also reduces the overall weight.

[0015] Preferably, the fixing through holes and ventilation slots are distributed at equal angles on the cargo frame, and the length of the fixing through holes and ventilation slots is equal to the length of the cargo frame. Furthermore, the inner side of the cargo frame has a wave-like structure. By setting the fixing through holes and ventilation slots, wind can pass through easily during the flight of the UAV, thereby reducing wind resistance.

[0016] Preferably, the first guide rope, the movable plate, and the limiting block are symmetrically distributed about the vertical axis of the load frame, and the two first guide ropes are wound in opposite directions on the winding shaft. The movable plate has an "L" shaped cross-section, so the two first guide ropes can be wound or extended by rotating the winding shaft.

[0017] Preferably, the movable plate forms a rotating structure through a movable shaft and a carrying frame, and the movable plate and the limiting block are hinged. The rotation range of the movable plate is 0-90°. When the movable plate is pulled, it can rotate on the carrying frame through the movable shaft, thereby causing the limiting block to contact the placed object and press it.

[0018] Preferably, the edge of the movable plate is fixedly connected to one end of the second guide rope, and a fixed channel is provided in the loading frame outside the second guide rope. A guide roller is provided on the inner side of the fixed channel to improve the smoothness of the movement of the second guide rope. When the movable plate rotates, it can pull the second guide rope and realize the second guide rope sliding in the fixed channel, thereby improving the smoothness through the guide roller.

[0019] Preferably, the other end of the second guide rope is fixedly connected to both ends of the movable rod, and a movable groove is provided on the load frame at the end of the movable rod. The movable rod and the load frame form a longitudinal sliding structure through the movable groove. When the second guide rope is pulled, it can drive the movable rod to slide in the movable groove.

[0020] Preferably, the movable rod is connected to the inner bottom surface of the carrying frame via a return spring, and the return springs are evenly distributed. The movable rod is provided at both the front and rear ends of the carrying frame. When the movable rod is pulled, it can cause the return spring to stretch, thereby limiting the front and rear ends of the placed item through the movable rod.

[0021] Compared with the prior art, the beneficial effects of the present invention are: this cargo-carrying drone, which can reduce wind resistance, can quickly place and retrieve items, and ensure the stability of items during drone flight. Furthermore, after loading, it can reduce the impact on the drone's flight by reducing wind resistance. The specific details are as follows:

[0022] 1. The cargo frame can be quickly assembled and disassembled by contacting or separating from the connecting plate. The fixing groove of the cargo frame can be fitted onto the hook of the connecting plate. Then, by rotating the adjusting rod, the two connecting plates are moved away from each other through the movable block and locked in the limiting cavity to install the cargo frame. Rotating the adjusting rod in the opposite direction can release the restriction of the connecting plate on the cargo frame. The mesh on both sides of the cargo frame can reduce its weight. The setting of fixing through holes and ventilation slots can allow wind to pass through quickly during the flight of the drone, thereby reducing wind resistance.

[0023] 2. When the first guide rope is wound up by rotating the winding shaft, the movable plate can be driven to rotate on the carrying frame, and the limiting block can be driven to move closer to the item to achieve clamping. When the winding shaft is rotated in the opposite direction, the first guide rope can be extended. In this way, the elasticity of the tension spring can be used to contact and clamp the item. Since the winding shaft and the carrying frame are connected by threads, it will not affect the winding or extension of the guide rope, and can maintain stability after rotation.

[0024] 3. While the movable plate rotates, the second guide rope can be pulled, which in turn pulls the movable rod to slide in the movable groove. This can raise the height of the movable rod and limit the front and rear ends of the carried item to prevent it from falling during transportation. When the movable plate rotates back to its original position, the pull on the second guide rope is released, so the movable rod can automatically return to its original position through the elasticity of the return spring, making it convenient to pick up the item. Attached Figure Description

[0025] Figure 1 This is a front view structural diagram of the present invention;

[0026] Figure 2 This is a schematic diagram of the three-dimensional structure of the connecting plate of the present invention;

[0027] Figure 3 This is a front view schematic diagram of the limiting cavity structure of the present invention;

[0028] Figure 4 This is a schematic diagram of the three-dimensional structure of the carrier frame of the present invention;

[0029] Figure 5 This is a schematic diagram of the cross-sectional structure of the carrying frame of the present invention;

[0030] Figure 6 This is a schematic diagram of the structure of the movable plate after rotation according to the present invention;

[0031] Figure 7 For the present invention Figure 6 Enlarged structural diagram at point a;

[0032] Figure 8 For the present invention Figure 5 Schematic diagram of the cross-sectional structure at point AA.

[0033] In the diagram: 1. UAV body; 2. Wing; 3. Support frame; 4. Adjusting rod; 5. Movable block; 6. Connecting plate; 7. Cargo frame; 8. Limiting cavity; 9. Storage cavity; 10. Fixing through hole; 11. Ventilation slot; 12. Winding shaft; 13. First guide rope; 14. Movable plate; 15. Movable shaft; 16. Tension spring; 17. Limiting block; 18. Second guide rope; 19. Fixing channel; 20. Guide roller; 21. Movable rod; 22. Movable slot; 23. Return spring; 24. Fixing slot. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] Please see Figure 1-8 The present invention provides a technical solution: a drone for carrying goods that can reduce wind resistance, comprising a drone body 1, wings 2 mounted on both sides of the drone body 1, and a support frame 3 at the bottom of the drone body 1.

[0036] The system includes: an adjusting rod 4, which is movably inserted through the interior of the support frame 3; a movable block 5 is movably fitted on the outer side of the adjusting rod 4; a connecting plate 6 is fixed to the bottom of the movable block 5; a carrying frame 7 is movably installed below the connecting plate 6; a fixing groove 24 is provided on the top of the carrying frame 7; a limiting cavity 8 is provided below the fixing groove 24; a storage cavity 9 is provided inside the carrying frame 7; a fixing through hole 10 is reserved at the bottom of the carrying frame 7; and a ventilation groove 11 is provided on the bottom surface of the carrying frame 7; a winding shaft 12, which is movably inserted through the top of the carrying frame 7; a first guide rope 13 is fixedly connected to the outer side of the winding shaft 12; a movable plate 14 is connected to the other end of the first guide rope 13; a movable shaft 15 passes through the middle of the movable plate 14; the movable plate 14 is connected to the carrying frame 7 through a tension spring 16; and a limiting block 17 is movably installed at the end of the movable plate 14.

[0037] like Figure 1-3 As shown, the adjusting rod 4 has two symmetrically arranged threaded grooves in opposite directions, and the adjusting rod 4 and the movable block 5 are threadedly connected. The top of the movable block 5 and the lower surface of the UAV body 1 are slidably connected. When the cargo frame 7 needs to be installed, it is fitted onto the end of the connecting plate 6 through the fixing groove 24. Then, the adjusting rod 4 is rotated to drive the two movable blocks 5 away from each other. When the movable blocks 5 move, they can drive the connecting plate 6 to move synchronously. The cross-section of the connecting plate 6 is hook-shaped, and the bottom thickness of the connecting plate 6 is less than the height of the limiting cavity 8. The sum of the bottom widths of the two connecting plates 6 is less than the width of the fixing groove 24. When the connecting plate 6 moves, it can move within the limiting cavity 8 and thus be supported within the limiting cavity 8, ensuring the stability of the cargo frame 7 after installation. When it needs to be disassembled, the adjusting rod 4 is rotated in the opposite direction.

[0038] like Figure 4As shown, the cargo frame 7 and the connecting plate 6 form a disassembly and installation structure. The bottom of the cargo frame 7 is curved, and the two sides of the cargo frame 7 are grid-like. The grid-like structure on both sides of the cargo frame 7 can ensure its strength to carry cargo while reducing its weight, thus ensuring the efficient flight of the UAV body 1. The fixing through holes 10 and ventilation slots 11 are distributed at equal angles on the cargo frame 7, and the length of the fixing through holes 10 and ventilation slots 11 is equal to the length of the cargo frame 7. The inner side of the cargo frame 7 has a wave-like structure. The fixing through holes 10 and ventilation slots 11 can facilitate the rapid passage of wind during the flight of the UAV body 1, thereby effectively reducing the wind resistance of the UAV body 1. The wave-like structure on the inner side of the cargo frame 7 can reduce the contact area when in contact with the placed items, and the gaps in the non-contact positions can also reduce wind resistance.

[0039] like Figure 1 , Figure 5-6 and Figure 8 As shown, the first guide rope 13, the movable plate 14, and the limiting block 17 are all symmetrically distributed about the vertical axis of the carrying frame 7. The two first guide ropes 13 are wound in opposite directions on the winding shaft 12. The movable plate 14 has an "L" shaped cross-section. By rotating the winding shaft 12, the first guide rope 13 can be wound up, or rotated in the opposite direction to extend the first guide rope 13. The threaded connection between the winding shaft 12 and the carrying frame 7 does not affect the winding of the guide rope and ensures the position of the winding shaft 12 after rotation. The stability is achieved by the movable plate 14 forming a rotating structure with the movable shaft 15 and the carrying frame 7. The movable plate 14 and the limiting block 17 are hinged, and the rotation range of the movable plate 14 is 0-90°. When it is rolled up, it can drive the movable plate 14 to rotate on the carrying frame 7 through the movable shaft 15, thereby driving the limiting block 17 to move closer to the placed item and clamp the item. Since the limiting block 17 and the movable plate 14 can rotate, the fit between them can be improved, preventing the item from shaking during transportation.

[0040] like Figure 1 and Figure 5-7As shown, the edge of the movable plate 14 is fixedly connected to one end of the second guide rope 18, and a fixed channel 19 is provided in the loading frame 7 outside the second guide rope 18. A guide roller 20 is provided on the inner side of the fixed channel 19 to improve the smoothness of the movement of the second guide rope 18. When the movable plate 14 rotates, it can synchronously pull the second guide rope 18, causing the second guide rope 18 to slide within the fixed channel 19. When the second guide rope 18 moves, it can contact the guide roller 20, thereby improving the smoothness of movement. The other end of the second guide rope 18 is fixedly connected to both ends of the movable rod 21, and a movable groove 22 is provided on the loading frame 7 at the end of the movable rod 21. The movable rod 21 connects to the loading frame 7 via the movable groove 22. The frame 7 forms a longitudinal sliding structure; the movable rod 21 is connected to the inner bottom surface of the carrying frame 7 through the return spring 23, and the return spring 23 is evenly distributed. The movable rod 21 is set at both the front and rear ends of the carrying frame 7. After the second guide rope 18 is pulled, it can drive the movable rod 21 to slide in the movable groove 22. Therefore, when the movable plate 14 rotates to press the limiting block 17 on the item, it can simultaneously pull the movable rod 21 upward to limit the front and rear ends of the item and prevent the item from falling during transportation. When the movable plate 14 rotates back to its original position, the elasticity of the return spring 23 can drive the movable rod 21 to return to its original position, so as not to affect the picking up of the item.

[0041] Working principle: such as Figure 1-8 As shown, after the cargo frame 7 is fitted onto the outside of the connecting plate 6, the connecting plate 6 can be locked into the cargo frame 7 by rotating the adjusting rod 4, ensuring stability after installation. Then, the goods to be transported are placed in the storage cavity 9. The first guide rope 13 is wound up by rotating the winding shaft 12, which in turn drives the movable plate 14 to rotate. This drives the limiting block 17 to press the items, ensuring stability during operation. While the movable plate 14 is rotating, the second guide rope 18 is pulled, which drives the movable rod 21 to slide in the movable groove 22. After the movable rod 21 is pulled up, it can limit the front and rear ends of the items, further ensuring stability during transportation. Furthermore, the wave-shaped structure on the inner side of the cargo frame 7 can reduce the contact area with the items. This allows the airflow of the drone body 1 to pass through the uncontacted gaps, as well as the fixed through hole 10 and ventilation groove 11, reducing the wind resistance of the drone body 1, improving flight efficiency, and facilitating the subsequent retrieval of the placed items.

[0042] In the description of this invention, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0043] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0044] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A drone for carrying cargo with reduced wind resistance, comprising a drone body (1), wherein wings (2) are installed on both sides of the drone body (1), and a support frame (3) is provided at the bottom of the drone body (1). Its features are, include: An adjusting rod (4) is movably inserted through the inside of the support frame (3). A movable block (5) is movably sleeved on the outside of the adjusting rod (4), and a connecting plate (6) is fixed at the bottom of the movable block (5). A load frame (7) is movably installed below the connecting plate (6), and a fixing groove (24) is opened at the top of the load frame (7), and a limiting cavity (8) is provided below the fixing groove (24). The interior of the carrying frame (7) is provided with a storage cavity (9), and the bottom of the carrying frame (7) is provided with a fixing through hole (10), and the bottom surface of the carrying frame (7) is provided with a ventilation groove (11). A winding shaft (12) is movably inserted through the top of the load frame (7). The outer side of the winding shaft (12) is fixedly connected to one end of the first guide rope (13), and the other end of the first guide rope (13) is connected to a movable plate (14). A movable shaft (15) is inserted through the middle of the movable plate (14), and the movable plate (14) is connected to the load frame (7) through a tension spring (16). A limit block (17) is movably installed at the end of the movable plate (14). The edge of the movable plate (14) is fixedly connected to one end of the second guide rope (18), and a fixed channel (19) is provided in the loading frame (7) outside the second guide rope (18), and a guide roller (20) is provided on the inner side of the fixed channel (19) to improve the smoothness of the movement of the second guide rope (18). The other end of the second guide rope (18) is fixedly connected to both ends of the movable rod (21), and the loading frame (7) at the end of the movable rod (21) is provided with a movable groove (22), and the movable rod (21) and the loading frame (7) form a longitudinal sliding structure through the movable groove (22).

2. The unmanned aerial vehicle (UAV) for carrying cargo with reduced wind resistance according to claim 1, characterized in that: The adjusting rod (4) is symmetrically provided with two threaded grooves in opposite directions, and the adjusting rod (4) and the movable block (5) are threadedly connected, and the top of the movable block (5) and the lower surface of the UAV body (1) are slidably connected.

3. A cargo-carrying drone with reduced wind resistance according to claim 1, characterized in that: The cross-section of the connecting plate (6) is hook-shaped, and the bottom thickness of the connecting plate (6) is less than the height of the limiting cavity (8), and the sum of the bottom widths of the two connecting plates (6) is less than the width of the fixing groove (24).

4. A cargo-carrying drone with reduced wind resistance according to claim 1, characterized in that: The loading frame (7) and the connecting plate (6) form a disassembly and installation structure, and the bottom of the loading frame (7) is set with an arc surface, and the two sides of the loading frame (7) are set with a grid.

5. A cargo-carrying drone with reduced wind resistance according to claim 1, characterized in that: The fixed through hole (10) and ventilation groove (11) are distributed at equal angles on the load frame (7), and the length of the fixed through hole (10) and ventilation groove (11) is equal to the length of the load frame (7), and the inner side of the load frame (7) is a wave-shaped structure.

6. A cargo-carrying drone with reduced wind resistance according to claim 1, characterized in that: The first guide rope (13), the movable plate (14) and the limiting block (17) are symmetrically distributed about the vertical axis of the load frame (7), and the two first guide ropes (13) are wound in opposite directions on the winding shaft (12), and the cross section of the movable plate (14) is an "L" shaped structure.

7. A cargo-carrying drone with reduced wind resistance according to claim 1, characterized in that: The movable plate (14) forms a rotating structure through the movable shaft (15) and the load frame (7), and the movable plate (14) and the limiting block (17) are hinged, and the rotation range of the movable plate (14) is 0-90°.

8. A cargo-carrying drone with reduced wind resistance according to claim 1, characterized in that: The movable rod (21) is connected to the inner bottom surface of the load frame (7) by a return spring (23), and the return spring (23) is evenly distributed. The movable rod (21) is provided at both the front and rear ends of the load frame (7).

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