High-load pesticide spraying unmanned aerial vehicle adopting hydrogen fuel cell

Abstract

The invention relates to the field of unmanned aerial vehicles, in particular to a high-load pesticide spraying unmanned aerial vehicle adopting a hydrogen fuel cell. Comprising an unmanned aerial vehicle body with a pesticide spraying system, a base for fixedly installing a hydrogen fuel cell is arranged on the unmanned aerial vehicle body, and a stabilizing mechanism for keeping the hydrogen fuel cell stable is arranged on the base; the stabilizing mechanism comprises a carrier for accommodating the hydrogen fuel cell therein and a vibration reduction assembly which is matched with the carrier to perform vibration reduction on the hydrogen fuel cell. According to the unmanned aerial vehicle, through matched connection of the buckle structure between the carrier and the hydrogen fuel cell, it is ensured that the hydrogen fuel cell keeps a stable and reliable working state when the unmanned aerial vehicle body executes a pesticide spraying task, the hydrogen fuel cell is tightly limited in the carrier along with starting of the vibration reduction assembly, the hydrogen fuel cell is further stabilized, and the stability of the unmanned aerial vehicle is improved. The stability and the reliability of the hydrogen fuel cell are improved, and the operation efficiency and the prevention and control effect of the unmanned aerial vehicle body under the complex flight condition are enhanced.

Description

Technical Field

[0001] The present invention relates to the field of unmanned aerial vehicles (UAVs), and in particular to a high-load pesticide spraying UAV using a hydrogen fuel cell. Background Art

[0002] Unmanned aircraft used for agricultural and forestry plant protection operations consist of three parts: a flight platform, a navigation flight control system, and a spraying mechanism. Spraying operations are carried out through ground remote control or navigation flight control, and can spray pesticides, seeds, powders, etc. UAVs using hydrogen fuel cells are more capable of providing an efficient and clean power source, significantly extending the flight time of the UAV and improving operating efficiency, and are particularly suitable for high-load and long-term operation requirements. However, when using hydrogen fuel cells as a power source, the high-load design is prone to vibration problems, affecting flight stability and spraying accuracy, and posing a potential threat to structural strength and service life.

[0003] A power battery fixing device for unmanned aerial vehicles with a currently disclosed Chinese authorization announcement number of CN115498347B includes an unmanned aerial vehicle body, a mounting box is fixed in a bottom mounting groove of the unmanned aerial vehicle body, a battery is installed inside the mounting box, a handle is fixed at the bottom of the battery for easy picking, a mounting mechanism for clamping the battery is installed on the inner top wall of the mounting box, a clamping mechanism for fixing the battery is fixed on the outer lower end of the mounting box, the battery is limited and fixed by the cooperation between the mounting mechanism installed on the top wall of the mounting box and the clamping mechanism installed on the outer side of the mounting box, and the mounting mechanism can be applied to batteries of different sizes through the mounting mechanism, and the scope of application is wider.

[0004] According to the above patent, the patent can reduce the poor contact between the battery and the drone caused by vibration during the use of the drone through the installation mechanism, while improving the convenience of battery installation. However, in a high-vibration environment, the installation of the battery may become loose or worn, resulting in a decrease in long-term reliability. Therefore, there is a need for a high-load pesticide spraying drone that provides additional stabilization effect to the installed hydrogen fuel cell during the flight of the drone, enhances the stability of the hydrogen fuel cell and reduces the poor contact caused by vibration and the problem of affecting the accuracy of pesticide spraying. Summary of the invention

[0005] In view of the problems existing in the prior art, a high-load pesticide spraying UAV using a hydrogen fuel cell is provided. The coupling connection of the snap-fit ​​structure between the carrier and the hydrogen fuel cell ensures that the hydrogen fuel cell maintains a stable and reliable working state when the UAV body performs the pesticide spraying task. With the activation of the vibration reduction component, the hydrogen fuel cell is tightly confined in the carrier, further stabilizing the hydrogen fuel cell, which not only improves the stability and reliability of the hydrogen fuel cell, but also enhances the operating efficiency and prevention and control effect of the UAV body under complex flight conditions.

[0006] To solve the problems of the prior art, the present invention provides a high-load pesticide spraying drone using a hydrogen fuel cell, comprising a drone body with a spraying system, the drone body being provided with a base for fixing the hydrogen fuel cell, the base being provided with a stabilizing mechanism for maintaining the stability of the hydrogen fuel cell, the stabilizing mechanism comprising a carrier for accommodating the hydrogen fuel cell therein and a vibration reduction assembly for cooperating with the carrier to reduce vibration of the hydrogen fuel cell, when the drone body is in a working state, the vibration energy of the hydrogen fuel cell is transmitted to the carrier to be buffered by the action of the vibration reduction assembly.

[0007] Preferably, an air flow channel for air circulation is formed between the carrier and the hydrogen fuel cell, and a rubber strip in contact with the hydrogen fuel cell for buffering vibration energy is provided on the carrier and in the air flow channel.

[0008] Preferably, the carrier is composed of two clamps symmetrically arranged on both sides of the hydrogen fuel cell, each clamp is transmission connected to the vibration reduction assembly, each clamp can move in the direction of the hydrogen fuel cell, and when each clamp applies pressure to the hydrogen fuel cell, the hydrogen fuel cell is in a pressurized state in the rubber strip.

[0009] Preferably, the splint is specifically a valve structure elastically connected to the base, and the airflow channel is formed between each of the splints and the hydrogen fuel cell. The vibration reduction assembly includes a pressure member driving each splint. When the two pressure members synchronously apply pressure to the corresponding splints, the splint is in a deformed state and the rubber strip is in a compressed state.

[0010] Preferably, a buckle structure is provided between the lower end of each clamp and the hydrogen fuel cell to provide a stable supporting force for the hydrogen fuel cell, and the buckle structure consists of a clamping part connected to the clamp and a clamped part connected to the hydrogen fuel cell.

[0011] Preferably, the pressure member is specifically a pressure rod structure, and each clamping plate is provided with a cushion layer that can adapt to the corresponding pressure member so that the pressure member can stably transfer pressure to the clamping plate.

[0012] Preferably, the base is provided with a side plate in which each pressure member is movably arranged, and both ends of each pressure member are provided with a movable shaft extending outward through the side plate, and the side plate is provided with a sliding groove for the movable shaft to slide, and the trajectory direction of the sliding groove is parallel to the movable direction of the splint.

[0013] Preferably, the vibration damping assembly also includes a pressure-applying driver for cooperating with each movable shaft, the pressure-applying driver having a rotating plate in contact with the movable shaft and a pressure-applying plate in contact with the rotating plate, the rotating plate being rotatably arranged on the side plate, the pressure-applying plate being able to slide in a vertical direction on the side plate to drive the rotating plate to apply pressure to the movable shaft.

[0014] Preferably, a main rotor is provided around the drone body, and a secondary rotor is provided below the drone body at the position corresponding to each pressurized drive to provide additional lift effect. Each of the secondary rotors is provided with a linkage structure for driving the pressurized plate to move downward through the generated airflow.

[0015] Preferably, a drainage channel for air circulation is provided above the secondary rotor, and the linkage structure has an elastic valve arranged in the drainage channel and a linkage plate fixedly connected between the elastic valve and the pressure plate. When the secondary rotor starts to generate downward wind force, the elastic valve is in a downward moving state under the action of negative pressure, causing the pressure plate to move downward synchronously.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention ensures that the hydrogen fuel cell maintains a stable and reliable working state when the drone body performs the pesticide spraying task through the cooperation of the carrier and the vibration reduction component. It can effectively reduce the displacement and shaking of the hydrogen fuel cell when the drone body experiences flight vibration, protect it from vibration damage, and guide the air through the airflow channel to maintain a suitable working temperature.

[0018] In addition, the stable state of the hydrogen fuel cell not only ensures the continuity and stability of power supply to the electric motor, but also indirectly stabilizes the overall structure of the drone body, allowing the spraying system to work in a more stable state, thereby achieving uniform and accurate coverage of the target area with pesticides, improving work efficiency and prevention and control effects.

[0019] 2. The present invention ensures that the hydrogen fuel cell is firmly fixed during the flight of the UAV through the synergistic effect of the clamping part and the pressure member on the clamping plate to prevent displacement or loosening caused by vibration. During the installation of the hydrogen fuel cell, the hydrogen fuel cell is confined between the two clamping plates through the cooperation of the clamped part and the clamping part, providing a preliminary stabilization effect.

[0020] As the drone flies, the pressure-adding parts evenly apply pressure to the splint through the cushion layer, making the splint move smoothly and compressing the rubber strip, further stabilizing the hydrogen fuel cell and reducing the impact of external vibration. This effectively maintains the stability and vibration reduction effect of the hydrogen fuel cell. It not only enhances the mechanical support of the hydrogen fuel cell, but also improves the stability of the drone under complex flight conditions and the accuracy of pesticide spraying.

[0021] 3. The present invention utilizes the airflow power generated by the secondary rotor to drive the pressure plate to move in the vertical direction through the drainage channel and the elastic valve, thereby pushing the rotating plate to rotate and apply pressure to the movable shaft, ensuring that the splint applies stable and uniform pressure to the hydrogen fuel cell.

[0022] With the activation of the secondary rotor based on the main rotor, additional lift is provided to the drone body, ensuring flight stability even when the drone is flying with a high load. At the same time, the vibration reduction effect and stability of the hydrogen fuel cell are enhanced by precisely controlling the pressure distribution, thereby optimizing the pesticide spraying effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a three-dimensional structure diagram of a high-load pesticide spraying drone using a hydrogen fuel cell according to the present invention. Figure 1 .

[0024] Figure 2 This is a three-dimensional structure diagram of a high-load pesticide spraying drone using a hydrogen fuel cell according to the present invention. Figure 2 .

[0025] Figure 3 It is a partial three-dimensional structural cross-sectional view of a high-load pesticide spraying drone using a hydrogen fuel cell according to the present invention.

[0026] Figure 4 The present invention is a three-dimensional structural schematic diagram of a hydrogen fuel cell and a stabilizing mechanism of a high-load pesticide spraying drone using a hydrogen fuel cell.

[0027] Figure 5 The present invention is a left side view of a hydrogen fuel cell and a stabilizing mechanism of a high-load pesticide spraying drone using a hydrogen fuel cell.

[0028] Figure 6 The present invention is a partial plan cross-sectional view of a hydrogen fuel cell and a stabilizing mechanism of a high-load pesticide spraying drone using a hydrogen fuel cell.

[0029] Figure 7 The present invention is a partial three-dimensional structural cross-sectional view of a hydrogen fuel cell and a stabilizing mechanism of a high-load pesticide spraying drone using a hydrogen fuel cell.

[0030] Figure 8It is a schematic diagram of the coordination state of the secondary rotor, linkage structure and pressurized driver of a high-load pesticide spraying UAV using a hydrogen fuel cell according to the present invention.

[0031] Fig. 9 It is a partial three-dimensional structural schematic diagram of a pressurizing driver and a pressurizing component of a high-load pesticide spraying drone using a hydrogen fuel cell according to the present invention.

[0032] Fig.10 The present invention Figure 5 An enlarged schematic diagram of point A.

[0033] The numbers in the figure are: 1. UAV body; 11. main rotor; 12. secondary rotor; 121. linkage structure; 1211. elastic valve; 1212. linkage plate; 122. drainage channel; 2. hydrogen fuel cell; 21. hydrogen cylinder; 22. fuel cell stack; 3. base; 31. side plate; 311. slide groove; 4. stabilizing mechanism; 41. carrier; 411. air flow channel; 4111. first air port; 4112. second air port; 412. rubber strip; 413. splint; 4131. clamping part; 4132. clamped part; 42. vibration reduction assembly; 421. pressure member; 4211. cushion layer; 4212. movable shaft; 422. pressure driver; 4221. rotating plate; 4222. pressure plate. DETAILED DESCRIPTION

[0034] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0035] See also Figure 1-Figure 7 As shown, a high-load pesticide spraying drone using a hydrogen fuel cell includes a drone body 1 with a spraying system, the drone body 1 is provided with a base 3 for fixing a hydrogen fuel cell 2, the base 3 is provided with a stabilizing mechanism 4 for maintaining the stability of the hydrogen fuel cell 2, the stabilizing mechanism 4 includes a carrier 41 for accommodating the hydrogen fuel cell 2 therein and a vibration reduction component 42 cooperating with the carrier 41 to reduce vibration of the hydrogen fuel cell 2, when the drone body 1 is in a working state, the vibration energy of the hydrogen fuel cell 2 is transmitted to the carrier 41 to be buffered by the action of the vibration reduction component 42.

[0036] The spraying system is not shown in the figure.

[0037] The hydrogen fuel cell 2 is composed of a hydrogen gas cylinder 21 and a fuel cell stack 22 .

[0038] Before taking off, the operator needs to ensure that the hydrogen fuel cell 2 is correctly and firmly installed on the base 3 at the bottom of the drone body 1.

[0039] When the drone body 1 starts to take off, the hydrogen fuel cell 2 starts and supplies power to the motor. In this process, due to the disturbance caused by the air flow, the entire drone body 1 will inevitably experience a certain degree of vibration, which is then transmitted to the hydrogen fuel cell 2. At this time, the vibration reduction component 42 in the stabilizing mechanism 4 starts.

[0040] As the vibration energy is further transmitted to the carrier 41 where the hydrogen fuel cell 2 is located, the vibration reduction component 42 responds immediately, effectively reducing the vibration amplitude of the hydrogen fuel cell 2. When performing pesticide spraying tasks, the drone body 1 needs to frequently change altitude and speed to adapt to different terrains and crop distribution conditions. This means that the drone body 1 may encounter more intense and changeable vibration environments. However, thanks to the presence of the stabilizing mechanism 4, the hydrogen fuel cell 2 can maintain a relatively stable state even in this case. It not only ensures the physical safety of the hydrogen fuel cell 2 itself, avoiding damage or performance degradation caused by long-term exposure to high-intensity vibration, but also ensures the continuity and stability of power supply to the motor.

[0041] In addition, during the process of the drone body 1 spraying pesticides, the drone body 1 performs precise navigation according to the preset path and altitude, and releases pesticides in a timely and quantitative manner through its spraying system. If the drone body 1 vibrates due to external factors, the instability will be directly transmitted to the spraying system, resulting in deviation in the spraying position or uneven dosage. Therefore, the stabilizing effect of the hydrogen fuel cell 2 installed by the stabilizing mechanism 4 effectively buffers most of the vibration energy of the drone body 1. Not only does it protect the hydrogen fuel cell 2 from vibration damage, it also indirectly stabilizes the overall structure of the drone body 1, allowing the spraying system to work in a more stable state. Therefore, even under complex flight conditions, the spraying process can still maintain a high degree of stability and precision, ensuring that the pesticides evenly and accurately cover the target area, improving operating efficiency and prevention and control effects.

[0042] See also Figure 3-Figure 6 As shown, an air flow channel 411 for air circulation is formed between the carrier 41 and the hydrogen fuel cell 2 , and a rubber strip 412 is provided on the carrier 41 and in the air flow channel 411 for contacting the hydrogen fuel cell 2 to buffer vibration energy.

[0043] The carrier 41 is provided with a first gas inlet 4111 and a second gas inlet 4112 connected to the air flow channel 411 . The first gas inlet 4111 is provided at a position on the carrier 41 facing the hydrogen cylinder 21 , and the second gas inlet 4112 is provided at a position on the carrier 41 facing the fuel cell stack 22 .

[0044] When the drone body 1 performs the pesticide spraying task during flight, as the drone body 1 accurately navigates according to the preset path and altitude and releases the pesticide in a timely and quantitative manner, the hydrogen fuel cell 2 continues to provide power support to the motor. During this period, air enters the air flow channel 411 through the first air port 4111 and the second air port 4112 on the carrier 41, flows around the hydrogen fuel cell 2, effectively taking away the heat generated during its operation, and ensuring that the hydrogen fuel cell 2 is maintained within a suitable operating temperature range.

[0045] At the same time, the rubber strip 412 at the edge of the carrier 41 is closely attached to the surface of the hydrogen fuel cell 2, which not only provides the necessary buffering effect and reduces the potential damage caused by flight vibration, but also further stabilizes the position of the hydrogen fuel cell 2. The stability and reliability of the hydrogen fuel cell 2 under high-load operation are guaranteed, thereby ensuring the continuity and stability of the power supply to the motor.

[0046] See also Figure 3-Figure 7 As shown, the carrier 41 is composed of two clamps 413 symmetrically arranged on both sides of the hydrogen fuel cell 2, each clamp 413 is transmission-connected to the vibration reduction assembly 42, and each clamp 413 can move toward the direction of the hydrogen fuel cell 2. When each clamp 413 applies pressure to the hydrogen fuel cell 2, the hydrogen fuel cell 2 is in a pressurized state in the rubber strip 412.

[0047] When the drone body 1 performs the pesticide spraying task during flight, the hydrogen fuel cell 2 is firmly clamped by two clamping plates 413 symmetrically arranged on both sides thereof. Since each clamping plate 413 is transmission-connected to the vibration reduction assembly 42, it can move toward the direction of the hydrogen fuel cell 2 when vibration is transmitted.

[0048] As the drone body 1 experiences various flight vibrations, the clamping plate 413 applies appropriate pressure to the hydrogen fuel cell 2, placing it in a pressurized state in the rubber strip 412 in the carrier 41. This effectively reduces the displacement and shaking of the hydrogen fuel cell 2 caused by external vibrations, ensuring that it remains stable during high-load operation, thereby maintaining the stability of the drone body 1 during the overall spraying process.

[0049] During the process of pressurizing the rubber strip 412 , the rubber strip 412 not only provides the necessary buffering effect, but also further absorbs the remaining vibration energy, thereby minimizing the impact of vibration on the hydrogen fuel cell 2 and ensuring the stability and reliability of its performance.

[0050] See also Figure 3-Figure 7As shown, the splint 413 is specifically a valve structure elastically connected to the base 3, and the air flow channel 411 is formed between each of the splints 413 and the hydrogen fuel cell 2. The vibration reduction assembly 42 includes a pressure member 421 corresponding to each splint 413 for driving. When the two pressure members 421 simultaneously apply pressure to the corresponding splints 413, the splint 413 is in a deformed state, and the rubber strip 412 is in a compressed state.

[0051] When the drone body 1 performs the pesticide spraying task during flight, the two pressure members 421 simultaneously apply pressure to the corresponding clamping plates 413, causing the clamping plates 413 to deform and further press the hydrogen fuel cell 2 into the rubber strip 412. At this time, the clamping plates 413 are in a deformed state, and the rubber strip 412 is compressed, providing an additional buffering effect.

[0052] As the hydrogen fuel cell 2 is effectively supported, not only the displacement and shaking of the hydrogen fuel cell 2 caused by external vibration is reduced, but also the remaining vibration energy is further absorbed by the tightly fitted and compressed rubber strip 412. This ensures that the hydrogen fuel cell 2 maintains a stable and reliable working state during high-load operation, while relieving most of the vibration energy of the drone body 1 during flight.

[0053] See also Figure 3-Figure 7 As shown, a snap-fit ​​structure is provided between the lower end of each clamp 413 and the hydrogen fuel cell 2 to provide a stable supporting force for the hydrogen fuel cell 2, and the snap-fit ​​structure is composed of a clamping part 4131 connected to the clamp 413 and a clamped part 4132 connected to the hydrogen fuel cell 2.

[0054] When the hydrogen fuel cell 2 is fixed on the base 3, the clamping portion 4131 on the clamping plate 413 tightly fastens the clamped portion 4132 on the hydrogen fuel cell 2, ensuring that the hydrogen fuel cell 2 is firmly confined between the two clamping plates 413, thereby achieving a preliminary stabilization effect.

[0055] As the drone body 1 is started, the buckle structure can tightly confine the hydrogen fuel cell 2 in the two clamping plates 413 during the flight of the drone body 1, providing additional mechanical support for the hydrogen fuel cell 2, preventing the hydrogen fuel cell 2 from being displaced or loosened due to vibration, and enhancing the overall stability.

[0056] See also Figure 3-Figure 7 As shown, the pressure member 421 is specifically a pressure rod structure, and each clamping plate 413 is provided with a cushion layer 4211 that can adapt to the corresponding pressure member 421 so that the pressure member 421 can stably transfer the pressure to the clamping plate 413.

[0057] When the two pressure members 421 simultaneously apply pressure to the corresponding clamping plate 413, the pressure member 421 transmits uniform pressure to the clamping plate 413 through the cushion layer 4211, so that the clamping plate 413 can move smoothly toward the hydrogen fuel cell 2. The cushion layer 4211 can not only adapt to the shape and movement trajectory of the pressure member 421, but also effectively disperse the applied pressure to avoid local stress concentration from damaging the clamping plate 413. At the same time, it ensures that the pressure member 421 applies stable pressure to the clamping plate 413.

[0058] In the pressurized state, the clamping plate 413 is deformed under the action of the pressurizing member 421 and further compresses the hydrogen fuel cell 2 through the rubber strip 412, so that it is in a pressurized state. The stable pressurization process ensures that the hydrogen fuel cell 2 is always supported uniformly and appropriately during the entire flight process, thereby reducing the displacement and shaking caused by external vibration, thereby alleviating most of the vibration force of the drone body 1, and making the pesticide spraying process of the drone body 1 stable.

[0059] See also Figure 6-Figure 10 As shown, the base 3 is provided with a side plate 31 in which each pressure member 421 is movably arranged, and both ends of each pressure member 421 are provided with a movable shaft 4212 extending outward through the side plate 31, and the side plate 31 is provided with a sliding groove 311 for the movable shaft 4212 to slide, and the trajectory direction of the sliding groove 311 is parallel to the movable direction of the clamping plate 413.

[0060] During the flight of the drone body 1, the pressure member 421 moves smoothly along the slide groove 311 through the movable shaft 4212, so that the clamping plate 413 can perform precise linear motion along a predetermined direction. This ensures that the pressure member 421 can stably transfer pressure to the clamping plate 413 under vibration conditions, so that the clamping plate 413 can move smoothly toward the hydrogen fuel cell 2 and apply uniform pressure to the battery through the rubber strip 412.

[0061] The guiding function of the slide groove 311 ensures the consistency and stability of the movement of the clamping plate 413, avoids uneven pressure distribution or jamming of the clamping plate 413 due to irregular movement, and thus effectively maintains the stability and vibration reduction effect of the hydrogen fuel cell 2.

[0062] See also Figure 3 and Figure 7-10 As shown, the vibration damping assembly 42 also includes a pressure driver 422 for cooperating with each movable shaft 4212, and the pressure driver 422 has a rotating plate 4221 in contact with the movable shaft 4212 and a pressure plate 4222 in contact with the rotating plate 4221, and the rotating plate 4221 is rotatably set on the side plate 31, and the pressure plate 4222 can slide in a vertical direction on the side plate 31 to drive the rotating plate 4221 to apply pressure to the movable shaft 4212.

[0063] When the pressure plate 4222 moves in the vertical direction, the pressure plate 4222 pushes the rotating plate 4221 to rotate, and the rotating plate 4221 applies pressure through the contact point with the movable shaft 4212, so that the movable shaft 4212 can slide smoothly in the slide groove 311 and evenly transfer the pressure to the clamping plate 413.

[0064] As the pressure plate 4222 moves up and down, the rotating plate 4221 accurately adjusts the pressure on the movable shaft 4212, ensuring that the clamping plate 413 can perform linear movement along a predetermined direction and exert a stable supporting force on the hydrogen fuel cell 2. By accurately controlling the pressure distribution of the movable shaft 4212, the vibration reduction effect and stability of the hydrogen fuel cell 2 are further enhanced, ensuring the reliable operation of the hydrogen fuel cell 2, while ensuring the stability of the pesticide spraying process.

[0065] See also Figure 3 and Figure 7-10 As shown, a main rotor 11 is provided around the drone body 1, and a secondary rotor 12 for providing additional lift effect is provided below the drone body 1 at the position corresponding to each pressurizing driver 422, and each of the secondary rotors 12 is provided with a linkage structure 121 for driving the pressurizing plate 4222 to move downward through the generated airflow.

[0066] When the drone body 1 performs the pesticide spraying task during flight, the main rotors 11 around the drone body 1 provide the main lift and flight control. At the same time, the secondary rotors 12 below the drone body 1 are used to provide additional lift effect, so that the drone body 1 can still maintain flight stability under high load conditions, thereby improving the pesticide spraying effect.

[0067] During flight, the airflow generated by the rotation of the secondary rotor 12 acts on the pressure plate 4222 through the linkage structure 121, pushing it to move downward in the vertical direction, so that the pressure plate 4222 pushes the rotating plate 4221 to rotate and transmits the pressure to the clamping plate 413 through the movable shaft 4212, ensuring that the clamping plate 413 can apply stable pressure to the hydrogen fuel cell 2.

[0068] See also Figure 7-10 As shown, a drainage channel 122 for air circulation is provided above the secondary rotor 12, and the linkage structure 121 has an elastic valve 1211 arranged in the drainage channel 122 and a linkage plate 1212 fixedly connected between the elastic valve 1211 and the pressure plate 4222. When the secondary rotor 12 is started to generate downward wind force, the elastic valve 1211 is in a downward moving state under the action of negative pressure, so that the pressure plate 4222 moves downward synchronously.

[0069] When the secondary rotor 12 starts to generate downward wind force, the downward wind force generated by the secondary rotor 12 acts on the drainage channel 122, and negative pressure is generated in the drainage channel 122, and the elastic valve 1211 moves downward under the action of the negative pressure, thereby transmitting the pressure to the pressure plate 4222 through the linkage plate 1212, so that the pressure plate 4222 moves downward synchronously.

[0070] By utilizing the airflow power generated by the secondary rotor 12, the movement of the pressurizing plate 4222 is precisely controlled, thereby pushing the rotating plate 4221 to apply appropriate pressure to the movable shaft 4212, ensuring that the clamping plate 413 can stably apply uniform pressure to the hydrogen fuel cell 2. The entire process is dynamically adjusted through airflow drive, which not only ensures the stability of the UAV body 1 during flight, but also ensures the stability of the power supply of the hydrogen fuel cell 2.

[0071] The present invention accommodates the hydrogen fuel cell 2 through the carrier 41, that is, connects with the hydrogen fuel cell 2 through a snap-fit ​​structure, thereby ensuring that the hydrogen fuel cell 2 maintains a stable and reliable working state when the drone body 1 performs the pesticide spraying task, effectively reducing the displacement and shaking caused by vibration, and at the same time, through the formation of an air flow channel 411 between the carrier 41 and the hydrogen fuel cell 2, air circulation is provided to maintain a suitable working temperature.

[0072] As the pressure member 421 applies pressure to the carrier 41, the hydrogen fuel cell 2 is tightly clamped therein, further stabilizing the hydrogen fuel cell 2. At the same time, the airflow power generated by the secondary rotor 12 provides additional lift for the drone body 1, optimizing flight stability and pesticide spraying effect. This not only improves the stability and reliability of the hydrogen fuel cell 2, but also enhances the operating efficiency and prevention effect of the drone body 1 under complex flight conditions.

[0073] The above embodiments only express one or several implementation modes of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the protection scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A high-load pesticide spraying drone using a hydrogen fuel cell, comprising a drone body with a spraying system, and a base for fixing the hydrogen fuel cell on the drone body; It is characterized in that The base is provided with a stabilizing mechanism for maintaining the stability of the hydrogen fuel cell, and the stabilizing mechanism includes a carrier for accommodating the hydrogen fuel cell therein and a vibration reduction component cooperating with the carrier to reduce vibration of the hydrogen fuel cell; When the drone body is in working state, the vibration energy of the hydrogen fuel cell is transmitted to the carrier to be buffered by the vibration reduction component.

2. A high-load pesticide spraying drone using a hydrogen fuel cell according to claim 1, characterized in that: An air flow channel for air circulation is formed between the carrier and the hydrogen fuel cell. A rubber strip in contact with the hydrogen fuel cell for buffering vibration energy is provided on the carrier and in the air flow channel.

3. A high-load pesticide spraying drone using a hydrogen fuel cell according to claim 2, characterized in that: The carrier is composed of two clamps symmetrically arranged on both sides of the hydrogen fuel cell. Each clamp is transmission-connected to the vibration-damping assembly. Each clamp can move toward the direction of the hydrogen fuel cell. When each clamp applies pressure to the hydrogen fuel cell, the hydrogen fuel cell is in a pressurized state in the rubber strip.

4. The high-load pesticide spraying drone using a hydrogen fuel cell according to claim 3, characterized in that: The splint is specifically a valve structure elastically connected to the base, and the airflow channel is formed between each of the splints and the hydrogen fuel cell. The vibration reduction assembly includes a pressure member corresponding to each splint for driving. When the two pressure members synchronously apply pressure to the corresponding splints, the splint is in a deformed state and the rubber strip is in a compressed state.

5. The high-load pesticide spraying drone using a hydrogen fuel cell according to claim 4, characterized in that: A buckle structure is provided between the lower end of each clamp and the hydrogen fuel cell to provide a stable supporting force for the hydrogen fuel cell. The buckle structure is composed of a clamping part connected to the clamp and a clamped part connected to the hydrogen fuel cell.

6. The high-load pesticide spraying drone using a hydrogen fuel cell according to claim 4, characterized in that: The pressure piece is specifically a pressure rod structure, and each clamping plate is provided with a cushion layer which can adapt to the corresponding pressure piece so that the pressure piece can stably transfer the pressure to the clamping plate.

7. The high-load pesticide spraying drone using a hydrogen fuel cell according to claim 6, characterized in that: The base is provided with side plates for each pressure member to be movably arranged therein, and both ends of each pressure member are provided with movable shafts extending outward through the side plates, and the side plates are provided with sliding grooves for the movable shafts to slide, and the track direction of the sliding grooves is parallel to the movable direction of the splint.

8. The high-load pesticide spraying drone using a hydrogen fuel cell according to claim 7, characterized in that: The vibration reduction assembly also includes a pressure driver for cooperating with each movable shaft, the pressure driver having a rotating plate in contact with the movable shaft and a pressure plate in contact with the rotating plate, the rotating plate is rotatably arranged on the side plate, and the pressure plate can slide in a vertical direction on the side plate to drive the rotating plate to apply pressure to the movable shaft.

9. The high-load pesticide spraying drone using a hydrogen fuel cell according to claim 8, characterized in that: A main rotor is arranged around the drone body, and a secondary rotor is arranged below the drone body at the position corresponding to each pressurized drive to provide additional lift effect. Each of the secondary rotors is equipped with a linkage structure for driving the pressurized plate to move downward through the generated airflow.

10. The high-load pesticide spraying drone using a hydrogen fuel cell according to claim 9, characterized in that: A drainage channel for air circulation is provided above the secondary rotor. The linkage structure has an elastic valve arranged in the drainage channel and a linkage plate fixedly connected between the elastic valve and the pressure plate. When the secondary rotor starts to generate downward wind force, the elastic valve is in a downward moving state under the action of negative pressure, causing the pressure plate to move downward synchronously.

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