Butterfly-shaped unmanned aerial vehicle with high flight stability and use method thereof

Abstract

The invention discloses a butterfly-shaped unmanned aerial vehicle with high flight stability and a use method thereof, and relates to the technical field of unmanned aerial vehicles. The unmanned aerial vehicle comprises an unmanned aerial vehicle body, a propelling assembly is arranged at the bottom of the unmanned aerial vehicle body, and a connecting assembly is arranged at the top of the propelling assembly and located at the bottom of the unmanned aerial vehicle body. The propelling assembly can capture the posture change of the aircraft body caused by strong wind in real time through the balance sensor on one side of the top of the shell, signals are synchronously fed back to a transmission system, a bevel gear, a worm gear and a worm are driven by a motor to be rapidly linked, the angle of a ducted propeller is adjusted in time to generate reverse counteracting force, and impact of the strong wind on the aircraft body is rapidly neutralized; inclination, yawing or deviation of the aircraft body caused by strong wind is effectively restrained, it is ensured that the aircraft body can still keep a stable flight state in a complex strong wind environment, the stress directions of the ducted propellers can be accurately adjusted according to the strong wind from different directions, and propulsive force can effectively resist the aircraft body from the corresponding side.

Description

Technical Field

[0001] This invention relates to the field of unmanned aerial vehicle (UAV) technology, and in particular to a butterfly-shaped UAV with high flight stability and its usage method. Background Technology

[0002] With its unique aerodynamic layout, the butterfly-shaped drone features low flight drag and high aerodynamic efficiency, and has been widely used in aerial surveying, environmental monitoring, logistics and transportation. Its smooth butterfly shape not only reduces the impact of air turbulence during flight, but also improves the ability to maintain attitude during low-speed flight, making it suitable for more complex operating environments. Especially in scenarios with high requirements for equipment flexibility and operational stability, it can better meet the actual needs of use compared to drones with traditional layouts, further expanding its application boundaries.

[0003] Chinese patent application CN211592932U discloses a butterfly-shaped unmanned aerial vehicle (UAV). The UAV is butterfly-shaped and includes an annular shell, a central cabin, and a support frame. The annular shell is constructed from multiple fan-shaped shell units joined together via mortise and tenon joints formed by positioning protrusions and grooves at both ends. Each fan-shaped shell unit is made of injection-pressed foam plastic, with perforations on its upper surface and a protective mesh installed. A motor and propeller are fixed inside. The central cabin is located at the center of the annular shell and is a transparent shell structure. It houses a power supply, camera, and control system. A motor power plug inlet is circumferentially located within the central cabin. The motor power plug connects to the power supply, camera, and control system through this inlet. After connection, the motor power plug is sealed within the inlet, creating a sealed structure within the central cabin. This invention ensures the safety and durability of the UAV and effectively prevents significant damage to people, buildings, and public facilities.

[0004] While this patented design effectively cushions impacts during flight collisions by employing mortise and tenon joints in a fan-shaped shell, a foam plastic fuselage, and a protective mesh, thus enhancing its safety and durability and preventing damage to surrounding people, buildings, and public facilities, and by optimizing the overall fuselage structure to enable amphibious takeoff and landing and expand its application scenarios, it still faces challenges when encountering lateral airflow interference, such as the crosswinds commonly found between urban buildings or in complex outdoor environments. This is because the lift system of this type of drone is primarily concentrated in the fuselage. In the middle section, the overall structure has a small projected area in the horizontal direction, resulting in weak resistance to lateral winds and a lack of effective lateral stability control. This makes the drone prone to tilting, yaw, or even loss of control. Consequently, the stability and safety of the drone's flight are severely limited in applications requiring high wind resistance, such as material delivery and high-altitude inspection. In addition, the auxiliary propulsion components of traditional butterfly-shaped drones often use fixed connections or complex splicing structures, making disassembly cumbersome and inconvenient for daily maintenance, component replacement, and carrying and storage, further affecting the practicality and convenience of the equipment.

[0005] To address these issues, we provide a butterfly-shaped UAV with high flight stability and its usage method. Summary of the Invention

[0006] The purpose of this invention is to provide a butterfly-shaped unmanned aerial vehicle (UAV) with high flight stability and its usage method. By cooperating with the propulsion component and the connecting component, the invention solves the problems of low stability and difficulty in disassembling the propulsion component in existing butterfly-shaped UAVs.

[0007] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution: This invention relates to a butterfly-shaped unmanned aerial vehicle (UAV) with high flight stability and its usage method. The UAV includes a main body, a propulsion assembly at its bottom, and a connecting assembly at its top. The connecting assembly is located at the bottom of the UAV main body. The propulsion assembly includes a connecting block at the bottom of the UAV main body. A motor is fixedly connected to one side of the connecting block, and a driving bevel gear is fixedly connected to the output end of the motor. A driven bevel gear meshes with one side of the bottom of the driving bevel gear. A worm gear is fixedly connected to the inner side of the driven bevel gear. The other side of the worm gear penetrates the surface of the connecting block and is rotatably connected to it. The bottom of the worm gear meshes with... The device includes a worm gear, with a housing fixedly connected to one side of the worm gear. Both sides of the housing are rotatably connected to connecting blocks. A ducted propeller is fixedly connected to the bottom of the housing's inner cavity, and a balance sensor is fixedly connected to one side of the top of the housing. The connecting assembly includes a connecting frame, with its top fixedly connected to the drone body. A rotating rod is rotatably connected to the top of the connecting frame, and its bottom extends through the top of the connecting frame and is fixedly connected to a rotating plate. Connecting rods are rotatably connected to both sides of the bottom of the rotating plate, and a locking block is rotatably connected to the other end of each connecting rod. The rear side of the locking block is slidably connected to the connecting frame, and a spring is provided on one side of the locking block. The other side of the spring is fixedly connected to the connecting frame. The connecting block has a slot at its top, and one side of the bottom of the locking block engages with the slot. Through the engagement of the driving and driven bevel gears, the direction of motor power transmission is changed, allowing the motor to shift to one side of the connecting block. This avoids obstructing the rotation space of the housing and ducted propeller, ensuring that the adjustment range of the ducted propeller is not interfered with by the structure. Simultaneously, it makes the overall transmission structure layout more compact. The meshing structure of the worm gear and worm has excellent self-locking characteristics. After the ducted propeller is adjusted to the target angle suitable for strong winds, this angle can be firmly locked, preventing angle deviation caused by strong wind impacts. This ensures that the thrust continues to play a stable defensive role. Both the front and back sides are inclined. By simply pressing the connecting block, the inclined surface guides the block to automatically slide into the slot and engage, significantly reducing the difficulty of installation. Each connecting component has two blocks symmetrically distributed on both sides of the connecting frame, preventing tilting or uneven force on the connecting block caused by single-sided engagement. This ensures precise alignment between the push component and the connecting frame. The linkage and rotating plate design concentrate the operating parts of the two side blocks into one component, eliminating the need for separate operation of each side block. By controlling the rotating plate, the blocks can be driven synchronously, reducing operation steps and improving assembly and disassembly efficiency.

[0008] The present invention is further configured such that there are multiple connecting frames, which are arrayed on the bottom of the UAV body. The multiple connecting frames can be equipped with multiple propulsion components to form a multi-directional propulsion adjustment system. This system can work together to deal with airflow interference from different directions, thereby further improving the attitude control accuracy and wind resistance stability of the UAV body.

[0009] The present invention is further configured such that a protective shell is provided on the surface of the active bevel gear, and one side of the protective shell is fixedly connected to the connecting block. The protective shell can effectively block dust, sand and other impurities carried by the airflow during flight from entering the meshing area of ​​the active bevel gear and the driven bevel gear, avoiding impurities from causing gear wear and jamming. At the same time, it can resist the impact of slight external collisions on the bevel gear, ensuring the integrity of the transmission structure and the meshing accuracy.

[0010] The invention is further configured such that positioning grooves are provided on both sides of the connecting frame, and positioning rods are slidably connected to the inner cavity of the positioning grooves. The bottom of the positioning rods is fixedly connected to the connecting block. Each set of connecting components has two positioning rods and two positioning grooves, which are symmetrically distributed on both sides of the connecting block to form a bidirectional guiding structure. When installing the propulsion component, the connecting block can be guided to fit with the connecting frame along a preset trajectory, avoiding misalignment between the block and the groove, ensuring the accuracy of the engagement, and ensuring that the propulsion component remains perpendicular to the connecting frame after installation, without affecting subsequent angle adjustment actions.

[0011] The invention is further configured such that a fixing rod is provided in the inner cavity of the spring, both sides of the fixing rod are fixedly connected to the connecting frame, and the surface of the fixing rod is slidably connected to the locking block. The fixing rod can not only provide precise guidance for the locking block, but also restrict the movement of the spring to prevent displacement or twisting during its extension and contraction.

[0012] The invention is further configured such that a knob is provided on the top of the connecting frame, and the bottom of the knob is fixedly connected to the rotating rod. The knob increases the contact area between the hand and the rotating rod, making it easier for the operator to rotate the rotating rod.

[0013] The present invention is further configured such that a limiting groove is formed at the bottom of the inner cavity of the connecting block, a limiting block is slidably connected to the inner cavity of the limiting groove, and the other side of the limiting block is fixedly connected to the housing. The setting of the limiting groove and the limiting block can limit the rotation angle of the housing and avoid interference between the housing and other components.

[0014] The present invention is further configured such that a sliding groove is provided in the inner cavity of the connecting frame, and a slider is slidably connected to the inner cavity of the sliding groove. The other side of the slider is fixedly connected to the card block. The setting of the sliding groove and the slider can limit the range of motion and operation mode of the card block, thereby improving its operational stability.

[0015] The invention is further configured such that a connecting rod is rotatably connected to the inner cavity of the UAV body, and a first ducted propeller is fixedly connected to the surface of the connecting rod. A second ducted propeller is disposed on the top of the first ducted propeller, and the inner side of the second ducted propeller is fixedly connected to the connecting rod. When the connecting rod drives the first ducted propeller to rotate, the air below is drawn into the inner cavity of the duct. The blades transfer mechanical energy to the air by doing work, which significantly increases the air velocity and static pressure, forming a primary pressurization. The high-speed airflow after being pressurized by the first propeller will flow directionally along the inner wall air duct of the UAV body and directly act on the second ducted propeller above for secondary pressurization. This can double the lift and thrust of the UAV body, enabling it to carry heavier loads or achieve faster flight speeds.

[0016] A method for using a butterfly-shaped UAV with high flight stability includes the following steps: A. During installation, align the positioning rods on both sides of the connecting block with the positioning slots on both sides of the connecting frame and insert them. When the block contacts the slot, it is squeezed and slides along the fixed rod. The block spring is compressed and drives the connecting rod to rotate. When the block reaches the designated position, the spring extends and pushes the block back to its original position, and the block re-enters the slot, thus completing the connection of the propulsion assembly; B. During disassembly, simply turn the knob. The knob drives the rotating rod to rotate, which in turn drives the rotating plate to rotate. The rotating plate pulls the two side blocks along the fixed rod and compresses the spring through the connecting rod. When the block is completely disengaged from the slot, the propulsion assembly can be removed; C. During use, the ducted propeller starts and assists the UAV body in takeoff. When encountering strong winds in the air, the UAV body tilts. The tilt is detected by the balance sensor, and the motor is started. The motor drives the driven bevel gear to rotate through the active bevel gear. The driven bevel gear drives the worm gear to rotate, which drives the worm wheel to rotate. The worm wheel drives the housing to rotate, and the housing drives the ducted propeller to rotate. By adjusting different propulsion angles, the UAV can adapt to strong winds in different directions.

[0017] The present invention has the following beneficial effects: 1. The propulsion assembly of this invention can capture the changes in the aircraft's attitude caused by strong winds in real time through a balance sensor on one side of the top of the housing. The signal is synchronously fed back to the transmission system, and the motor drives the bevel gear and worm gear to quickly adjust the angle of the ducted propeller to generate a counteracting force. This quickly neutralizes the impact of strong winds on the aircraft and effectively suppresses the tilting, yaw, or deviation of the aircraft caused by strong winds. It ensures that the aircraft can maintain a stable flight state even in complex strong wind environments. Moreover, it can accurately adjust the force orientation of the ducted propeller for strong winds from different directions, so that the propulsion force can effectively resist from the corresponding side, breaking the limitation of traditional structures that can only adjust in one direction or with limited angles.

[0018] 2. The connecting component of this invention uses a linkage structure of a rotating rod, a rotating plate, and a connecting rod. Rotating the rotating rod causes the locking block to slide along the connecting frame, allowing the locking block and the connecting block to quickly separate or engage in the slot. This simplifies the installation and disassembly process of the propulsion component without the need for additional tools. It also facilitates the replacement and maintenance of the propulsion component according to flight environment requirements, or the disassembly of parts during storage to save space. The elastic preload of the spring ensures that the propulsion component and the connecting frame form a tight and fixed relationship, effectively preventing the connection from loosening or falling off due to airframe vibration or airflow impact during flight. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0020] Figure 1 A three-dimensional structural diagram of a butterfly-shaped unmanned aerial vehicle with high flight stability and its usage method; Figure 2 A three-dimensional view of the propulsion component in a butterfly-shaped unmanned aerial vehicle with high flight stability and its usage method; Figure 3 This is an enlarged view of point A in a butterfly-shaped unmanned aerial vehicle with high flight stability and its usage method. Figure 4 A three-dimensional diagram of the connecting components in a butterfly-shaped unmanned aerial vehicle with high flight stability and its usage method; Figure 5 This is an enlarged view of section B in a butterfly-shaped UAV with high flight stability and its usage method. Figure 6 This is an enlarged view of point C in a butterfly-shaped unmanned aerial vehicle with high flight stability and its usage method. Figure 7 A three-dimensional view of the drone body in relation to a butterfly-shaped unmanned aerial vehicle (UAV) with high flight stability and its usage method.

[0021] In the attached diagram: 1. UAV body; 2. Propulsion assembly; 201. Connecting block; 202. Motor; 203. Driving bevel gear; 204. Driven bevel gear; 205. Worm gear; 206. Worm wheel; 207. Shell; 208. Ducted propeller; 209. Balance sensor; 3. Connecting assembly; 301. Connecting frame; 302. Rotating rod; 303. Rotating plate; 304. Connecting rod; 305. Locking block; 306. Spring; 307. Locking slot; 4. Protective shell; 5. Positioning slot; 6. Positioning rod; 7. Fixing rod; 8. Knob; 9. Limiting slot; 10. Limiting block; 11. Slide groove; 12. Slider; 13. Connecting rod; 14. First ducted propeller; 15. Second ducted propeller. Detailed Implementation

[0022] The technical solutions of the present invention will be described below with reference to the accompanying drawings. The described embodiments are only some embodiments of the present invention, and not all embodiments. Specific Implementation Example 1 Please see Figures 1-4 This invention relates to a butterfly-shaped unmanned aerial vehicle (UAV) with high flight stability and its usage method. The UAV includes a main body 1, a propulsion assembly 2 at the bottom of the main body 1, and a connecting assembly 3 at the top of the propulsion assembly 2. The connecting assembly 3 is located at the bottom of the main body 1. The propulsion assembly 2 includes a connecting block 201 at the bottom of the main body 1. A motor 202 is fixedly connected to one side of the connecting block 201. A driving bevel gear 203 is fixedly connected to the output end of the motor 202. A driven bevel gear 204 meshes with one side of the bottom of the driving bevel gear 203. A worm gear 205 is fixedly connected to the inner side of the driven bevel gear 204. The other side of the worm gear 205 passes through the surface of the connecting block 201 and is rotatably connected to the connecting block 201. A worm wheel 206 meshes with the bottom of the worm gear 205. A housing 207 is fixedly connected to one side of the worm wheel 206. The housing 207 has two sides... All components are rotatably connected to the connecting block 201. A ducted propeller 208 is fixedly connected to the bottom of the inner cavity of the housing 207. A balance sensor 209 is fixedly connected to one side of the top of the housing 207. The connecting assembly 3 includes a connecting frame 301. The top of the connecting frame 301 is fixedly connected to the UAV body 1. A rotating rod 302 is rotatably connected to the top of the connecting frame 301. The bottom of the rotating rod 302 passes through the top of the connecting frame 301 and is fixedly connected to a rotating plate 303. Both sides of the bottom of the rotating plate 303 are rotatably connected to connecting rods 304. The other end of the connecting rod 304 is rotatably connected to a locking block 305. The rear side of the locking block 305 is slidably connected to the connecting frame 301. A spring 306 is provided on one side of the locking block 305. The other side of the spring 306 is fixedly connected to the connecting frame 301. A slot 307 is opened on the top of the connecting block 201. One side of the bottom of the locking block 305 is engaged with the slot 307.

[0024] Specifically: By engaging the driving bevel gear 203 and the driven bevel gear 204, the direction of power transmission of the motor 202 is changed, allowing the motor 202 to shift to one side of the connecting block 201. This avoids obstructing the rotational space of the housing 207 and the ducted propeller 208, ensuring that the adjustment range of the ducted propeller 208 is not interfered with by the structure. Simultaneously, it makes the overall transmission structure layout more compact. Furthermore, the meshing structure of the worm gear 206 and the worm 205 has excellent self-locking characteristics, allowing the ducted propeller 208 to be adjusted to a more suitable position. Once the target angle of the wind is determined, that angle can be firmly locked to prevent angle deviation caused by strong wind impact, ensuring that the propulsion force continues to exert its resistive effect stably. Both the top side of the locking block 305 and the side of the locking slot 307 are inclined. Simply pressing the connecting block 201 allows the inclined surface to guide the locking block 305 to automatically slide into the locking slot 307, significantly reducing the difficulty of installation. Each connecting component 3 has two locking blocks 305, symmetrically distributed on both sides of the connecting frame 301, preventing one-sided locking. The resulting tilting or uneven force on the connecting block 201 ensures that the propulsion component 2 and the connecting frame 301 are accurately aligned. The setting of the connecting rod 304 and the rotating plate 303 concentrates the operating parts of the two side blocks 305 on one part, so that the operator does not need to operate the two side blocks 305 independently. The operator can drive the two side blocks 305 to move synchronously by controlling the rotating plate 303, reducing the operation steps and improving the disassembly and assembly efficiency. (In the technical solution "An Automatic Following System for a Two-Wheeled Self-Balancing Car", the sensor used is CN207718226U. Its principle and connection method have been disclosed by the prior art. Therefore, this application will not repeat the installation and configuration process of the sensor. Furthermore, the conversion of the electrical signal detected by the sensor into visual data is also disclosed by the prior art. Therefore, this application will not describe it again. At the same time, the sensor here is not made as a separate improvement. Therefore, its specific shape is not described in the figure. (The motor adopts the micro stepper motor 28BYJ48 or 39BYJ46 model.) Specific Implementation Example 2 Please see Figure 3 , Figure 5 and Figure 7 Based on the first specific embodiment, the number of connecting frames 301 is multiple and they are arrayed at the bottom of the UAV body 1. The surface of the active bevel gear 203 is provided with a protective shell 4. One side of the protective shell 4 is fixedly connected to the connecting block 201. A limiting groove 9 is opened at the bottom of the inner cavity of the connecting block 201. A limiting block 10 is slidably connected to the inner cavity of the limiting groove 9. The other side of the limiting block 10 is fixedly connected to the shell 207. A connecting rod 13 is rotatably connected to the inner cavity of the UAV body 1. A first ducted propeller 14 is fixedly connected to the surface of the connecting rod 13. A second ducted propeller 15 is provided on the top of the first ducted propeller 14. The inner side of the second ducted propeller 15 is fixedly connected to the connecting rod 13.

[0026] Specifically: The multiple connecting frames 301 can be equipped with multiple propulsion components 2 to form a multi-directional propulsion adjustment system. This system can work together to counter airflow interference from different directions, further improving the attitude control accuracy and wind resistance stability of the UAV body 1. The protective shell 4 can effectively prevent dust, sand, and other impurities carried by the airflow during flight from entering the meshing area of ​​the active bevel gear 203 and the driven bevel gear 204, avoiding gear wear and jamming caused by impurities. At the same time, it can resist the impact of minor external collisions on the bevel gears, ensuring the integrity and meshing accuracy of the transmission structure. The setting of the limiting groove 9 and the limiting block 10 It can limit the rotation angle of the shell 207 and avoid interference between the shell 207 and other components. When the connecting rod 13 drives the first ducted propeller 14 to rotate, the air below is drawn into the duct cavity. The blades transfer mechanical energy to the air by doing work, which significantly increases the air velocity and static pressure, forming a primary pressurization. The high-speed airflow after being pressurized by the first propeller will flow directionally along the inner wall air duct of the UAV body 1 and directly act on the second ducted propeller 15 above for secondary pressurization. This can double the lift and thrust of the UAV body 1, enabling it to carry heavier loads or achieve faster flight speeds. Specific Implementation Example 3 Please see Figure 4 and Figure 6 Based on specific embodiments one and two, positioning grooves 5 are provided on both sides of the connecting frame 301. Positioning rods 6 are slidably connected to the inner cavity of the positioning grooves 5. The bottom of the positioning rods 6 is fixedly connected to the connecting block 201. A fixing rod 7 is provided in the inner cavity of the spring 306. The fixing rod 7 is fixedly connected to the connecting frame 301 on both sides. The surface of the fixing rod 7 is slidably connected to the locking block 305. A knob 8 is provided on the top of the connecting frame 301. The bottom of the knob 8 is fixedly connected to the rotating rod 302. A sliding groove 11 is provided in the inner cavity of the connecting frame 301. A slider 12 is slidably connected to the inner cavity of the sliding groove 11. The other side of the slider 12 is fixedly connected to the locking block 305.

[0028] Specifically: Each set of connecting components 3 has two positioning rods 6 and two positioning slots 5, which are symmetrically distributed on both sides of the connecting block 201 to form a two-way guiding structure. When installing the push component 2, it can guide the connecting block 201 to fit with the connecting frame 301 along a preset trajectory, avoiding misalignment between the locking block 305 and the locking slot 307, ensuring the accuracy of the locking connection, and ensuring that the push component 2 remains perpendicular to the connecting frame 301 after installation, without affecting subsequent angle adjustment. The fixing rod 7 can not only provide precise guidance for the locking block 305, but also restrict the movement of the spring 306 to prevent displacement or twisting during its extension and retraction. The knob 8 increases the contact area between the hand and the rotating rod 302, making it easier for the operator to rotate the rotating rod 302. The slide groove 11 and the slider 12 restrict the range of motion and operation of the locking block 305, improving its stability during operation. Specific Implementation Example 4 Please refer to Figures 1 to 4 Based on specific embodiments one, two, and three, a method for using a butterfly-shaped UAV with high flight stability includes the following steps: A. During installation, align the positioning rods 6 on both sides of the connecting block 201 with the positioning slots 5 on both sides of the connecting frame 301 and insert them. When the locking block 305 contacts the slot 307, the locking block 305 is squeezed and slides along the fixing rod 7. The spring 306 of the locking block 305 is compressed and drives the connecting rod 304 to rotate. When the locking block 305 reaches the designated position, the spring 306 extends and pushes the locking block 305 to reset. The locking block 305 re-enters the slot 307, thus completing the connection of the propulsion component 2; B. During disassembly, simply rotate the knob 8. The knob 8 drives the rotating rod 302 to rotate, and the rotating rod 302 drives the rotating plate 303 to rotate. 3. By pulling the two side blocks 305 along the fixed rod 7 through the connecting rod 304, the spring 306 is compressed. After the block 305 is completely disengaged from the slot 307, the propulsion assembly 2 can be removed. C. In use, the ducted propeller 208 starts and assists the UAV body 1 to take off. When encountering strong winds in the air, the UAV body 1 tilts. The tilt is detected by the balance sensor 209 and the motor 202 is started. The motor 202 drives the driven bevel gear 204 to rotate through the active bevel gear 203. The driven bevel gear 204 drives the worm 205 to rotate. The worm 205 drives the worm wheel 206 to rotate. The worm wheel 206 drives the housing 207 to rotate. The housing 207 drives the ducted propeller 208 to rotate. By adjusting different propulsion angles, it can adapt to strong winds in different directions.

[0030] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementations described. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can better understand and utilize the present invention.

Claims

1. A butterfly-shaped unmanned aerial vehicle (UAV) with high flight stability, comprising the UAV body (1), characterized in that: The drone body (1) is provided with a propulsion component (2) at the bottom and a connection component (3) at the top of the propulsion component (2). The connection component (3) is located at the bottom of the drone body (1). The propulsion assembly (2) includes a connecting block (201) located at the bottom of the UAV body (1). A motor (202) is fixedly connected to one side of the connecting block (201). An active bevel gear (203) is fixedly connected to the output end of the motor (202). A driven bevel gear (204) meshes with one side of the bottom of the active bevel gear (203). A worm gear (205) is fixedly connected to the inner side of the driven bevel gear (204). The other side of the worm gear (205) passes through the surface of the connecting block (201) and is rotatably connected to the connecting block (201). A worm wheel (206) meshes with the bottom of the worm gear (205). A housing (207) is fixedly connected to one side of the worm wheel (206). Both sides of the housing (207) are rotatably connected to the connecting block (201). A ducted propeller (208) is fixedly connected to the bottom of the inner cavity of the housing (207). The top of the housing (207)... A balance sensor (209) is fixedly connected to one side of the unit. The connecting assembly (3) includes a connecting frame (301). The top of the connecting frame (301) is fixedly connected to the UAV body (1). A rotating rod (302) is rotatably connected to the top of the connecting frame (301). The bottom of the rotating rod (302) passes through the top of the connecting frame (301) and is fixedly connected to a rotating plate (303). Both sides of the bottom of the rotating plate (303) are rotatably connected to connecting rods (304). The other end of the connecting rod (304) is rotatably connected to a locking block (305). The rear side of the locking block (305) is slidably connected to the connecting frame (301). A spring (306) is provided on one side of the locking block (305). The other side of the spring (306) is fixedly connected to the connecting frame (301). A slot (307) is opened on the top of the connecting block (201). One side of the bottom of the locking block (305) is engaged with the slot (307).

2. The butterfly-shaped UAV with high flight stability according to claim 1, characterized in that: The number of connecting frames (301) is multiple, and they are arranged in an array at the bottom of the UAV body (1).

3. The butterfly-shaped UAV with high flight stability according to claim 1, characterized in that: The surface of the active bevel gear (203) is provided with a protective shell (4), and one side of the protective shell (4) is fixedly connected to the connecting block (201).

4. The butterfly-shaped UAV with high flight stability according to claim 1, characterized in that: The connecting frame (301) has positioning grooves (5) on both sides. A positioning rod (6) is slidably connected to the inner cavity of the positioning groove (5). The bottom of the positioning rod (6) is fixedly connected to the connecting block (201).

5. A butterfly-shaped unmanned aerial vehicle with high flight stability according to claim 1, characterized in that: The inner cavity of the spring (306) is provided with a fixing rod (7), both sides of the fixing rod (7) are fixedly connected to the connecting frame (301), and the surface of the fixing rod (7) is slidably connected to the locking block (305).

6. A butterfly-shaped unmanned aerial vehicle with high flight stability according to claim 1, characterized in that: The top of the connecting frame (301) is provided with a knob (8), and the bottom of the knob (8) is fixedly connected to the rotating rod (302).

7. A butterfly-shaped unmanned aerial vehicle with high flight stability according to claim 1, characterized in that: The bottom of the inner cavity of the connecting block (201) is provided with a limiting groove (9), and the inner cavity of the limiting groove (9) is slidably connected to a limiting block (10), and the other side of the limiting block (10) is fixedly connected to the shell (207).

8. A butterfly-shaped unmanned aerial vehicle with high flight stability according to claim 1, characterized in that: The inner cavity of the connecting frame (301) is provided with a sliding groove (11), and a slider (12) is slidably connected to the inner cavity of the sliding groove (11). The other side of the slider (12) is fixedly connected to the locking block (305).

9. A butterfly-shaped unmanned aerial vehicle with high flight stability according to claim 1, characterized in that: The inner cavity of the UAV body (1) is rotatably connected to a connecting rod (13), and a first ducted propeller (14) is fixedly connected to the surface of the connecting rod (13). A second ducted propeller (15) is provided on the top of the first ducted propeller (14), and the inner side of the second ducted propeller (15) is fixedly connected to the connecting rod (13).

10. A method of using a butterfly-shaped unmanned aerial vehicle with high flight stability according to any one of claims 1-9, characterized in that: Includes the following steps: A. During installation, align the positioning rods (6) on both sides of the connecting block (201) with the positioning slots (5) on both sides of the connecting frame (301) and insert them. When the locking block (305) contacts the slot (307), the locking block (305) is squeezed and slides along the fixing rod (7). The spring (306) of the locking block (305) is compressed and drives the connecting rod (304) to rotate. When the locking block (305) reaches the designated position, the spring (306) extends and pushes the locking block (305) to reset. The locking block (305) re-enters the slot (307), and the connection of the propulsion component (2) can be completed. B. During disassembly, simply turn the knob (8). The knob (8) drives the rotating rod (302) to rotate, and the rotating rod (302) drives the rotating plate (303) to rotate. The rotating plate (303) pulls the two side blocks (305) along the fixed rod (7) through the connecting rod (304) and compresses the spring (306). When the block (305) is completely disengaged from the slot (307), the push assembly (2) can be removed. C. When in use, the ducted propeller (208) starts and assists the UAV body (1) to take off. When encountering strong winds in the air, the UAV body (1) tilts. The tilt is detected by the balance sensor (209) and the motor (202) is started. The motor (202) drives the driven bevel gear (204) to rotate through the active bevel gear (203). The driven bevel gear (204) drives the worm (205) to rotate. The worm (205) drives the worm wheel (206) to rotate. The worm wheel (206) drives the housing (207) to rotate. The housing (207) drives the ducted propeller (208) to rotate. By adjusting different propulsion angles, it can adapt to strong winds in different directions.

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