Unmanned aerial vehicle for pesticide spraying

Abstract

The invention relates to the technical field of unmanned aerial vehicles, in particular to a pesticide spraying unmanned aerial vehicle which comprises a frame body, a pesticide tank is arranged in the middle of the frame body, a wing control box and a radar are arranged at one end of the frame body in the length direction, a pesticide tank control box is arranged at the other end of the frame body in the length direction, and supporting frames are arranged on the two sides of the frame body in the length direction. The supporting frame is used for abutting against the ground. Wing rods are arranged at the four corners of the frame body, wings driven by motors are arranged at the ends, away from the frame body, of the wing rods, the wings are electrically connected with a control box, the wing control box is used for controlling the wings and supplying power to the wings, and nozzles are arranged on the wing rods and used for spraying liquid. Four draw-off pumps are arranged on the pesticide tank, hoses are arranged at the two ends of each draw-off pump, the hose at one end of each draw-off pump is used for extracting pesticide liquid in the pesticide tank, the hose at the other end of each draw-off pump is connected with the corresponding spray head, and the pesticide tank control box is used for supplying power to the draw-off pumps and controlling the draw-off pumps. And spraying of liquid medicine can be achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of unmanned aerial vehicles (UAVs), and in particular to an unmanned aerial vehicle (UAV) for spraying pesticides. Background Art

[0002] Unmanned aerial vehicles (UAVs) are unmanned aircraft that are controlled by radio remote control equipment and self-contained program control devices, or are fully or intermittently autonomously operated by an onboard computer. In the past, UAVs were usually large drones with an overall appearance similar to that of airplanes, used for military and pesticide spraying on large farms, but now UAVs have gradually developed into a new branch and are gradually developing towards miniaturization.

[0003] When some farmers with smaller farmlands want to use drones to spray pesticides, due to the small size of the farmlands, choosing large drones not only increases the cost of spraying, but also makes the spraying more difficult. There are also relatively few people who can operate large drones. Summary of the invention

[0004] In order to solve the problem that some farmers with smaller farmlands want to spray pesticides by drones under the existing technology, due to the small area of ​​farmland, choosing large drones will increase the spraying cost and difficulty, and there are relatively few people who can operate large drones. This application provides a drone for pesticide spraying, and the specific plan is as follows.

[0005] A pesticide spraying drone comprises a frame, a pesticide tank is arranged in the middle of the frame, the pesticide tank is detachably connected to the frame, a wing control box and a radar are arranged at one end of the frame in the length direction, a medicine tank control box is arranged at the other end of the frame in the length direction, and support frames are arranged on both sides of the frame in the length direction, and the support frames are used to abut against the ground; The four corners of the frame are provided with wing rods, and a wing driven by a motor is provided on one end of the wing rod away from the frame. The wing is electrically connected to a control box, and the wing control box is used to control the wing and supply power to the wing. Each of the wing rods is provided with a nozzle, and the nozzle is provided on the lower side of the wing, and the nozzle is used to spray liquid; Four extraction pumps are arranged on the pesticide tank, and hoses are arranged at both ends of the extraction pumps. The hose at one end of the extraction pump is used to extract the liquid in the pesticide tank, and the hose at the other end of the extraction pump is connected to the corresponding nozzle. The medicine tank control box is used to power the extraction pump and control the extraction pump.

[0006] By adopting the above plan, the pesticide spraying drone can achieve accurate and efficient pesticide spraying operations. The frame design of the drone makes the structure stable and reliable, and it is also easy to disassemble and maintain. The detachable connection between the pesticide tank and the frame facilitates the rapid replacement of the liquid medicine and improves work efficiency. The wing control box and the medicine tank control box are responsible for the power supply and control of the wing and the extraction pump respectively, ensuring that the various components work together and improving the reliability of the system. The nozzle position on the wing rod is reasonably designed to evenly cover the spraying area and ensure effective protection of crops. In addition, the design of the hose is not only flexible, but also effectively reduces the risk of liquid medicine leakage, further improving the safety and efficiency of spraying. Integrating pesticide spraying on the rotor drone can more accurately spray pesticides on small farmlands, meeting the needs of farmers.

[0007] Optionally, the hose is arranged along the frame, a pipeline channel is opened in the wing rod, the hose is embedded in the pipeline channel, and one end of the hose away from the frame extends out of the pipeline channel to be connected to the nozzle.

[0008] By adopting the above technical solution, the hose is arranged along the frame and embedded in the pipeline channel inside the wing rod, which effectively reduces the damage and interference of the external environment to the hose and improves the stability and safety of the drone during operation. At the same time, this layout makes the hose more neat and orderly, easy to maintain and inspect, and ensures that the nozzle can be reliably connected to the end of the hose for spraying liquid.

[0009] Optionally, one end of the hose away from the extraction pump is connected to the bottom of the pesticide tank, and the extraction pumps are connected to each other through the hose.

[0010] By adopting the above technical solution, the end of the hose away from the extraction pump is connected to the bottom of the pesticide tank, which can ensure that the liquid medicine is fully extracted, avoid residue, and improve the utilization rate of the liquid medicine. At the same time, the extraction pumps are connected to each other through hoses, which can achieve the coordinated work between multiple extraction pumps, enhance the stability and reliability of the system, and even if one extraction pump fails, the other extraction pumps can continue to work to ensure that the spraying operation is not affected.

[0011] Optionally, the frame body is provided with a folding frame corresponding to the wing rod, the wing rod is rotatably connected to the folding frame, and the folding frame is used to lock the rotation angle of the wing rod.

[0012] By adopting the above technical solution, the wing rods of the UAV can be flexibly adjusted and fixed in position, and the design of the folding frame enables the UAV to occupy less space when not in operation, making it easier to transport and store, thereby improving the convenience of storing the UAV and improving its portability.

[0013] Optionally, the nozzle is rotatably connected to the wing rod, and a locking piece is further provided at the rotational connection of the nozzle, and the locking piece is used to lock the rotation angle of the nozzle.

[0014] By adopting the above technical solution, the nozzle is rotatably connected to the wing rod and a locking piece is set at the rotating connection, so that the angle of the nozzle can be flexibly adjusted and fixed, so that the spraying angle can be accurately adjusted according to the height and shape of different crops, and the uniformity and coverage of pesticide spraying can be improved. The locking piece ensures that the angle of the nozzle will not change due to external interference during flight, ensuring the stability of the spraying effect.

[0015] Optionally, a centrifugal nozzle is provided at the bottom of the nozzle, and the centrifugal nozzle is used to spray out a water film with centrifugal force.

[0016] By adopting the above technical solution, the centrifugal nozzle can make the liquid sprayed from the nozzle form a water film with centrifugal force, thereby improving the spraying uniformity and coverage, ensuring that the pesticide can be more effectively attached to the crop surface, and reducing waste and environmental pollution.

[0017] Optionally, a support rod is provided on the frame corresponding to the pesticide tank, and a clamping portion is provided on the pesticide tank toward the support rod, and the support rod is used to support the clamping portion.

[0018] By adopting the above technical solution, the design of the support rod and the clamping part makes the fixation of the pesticide tank on the drone more stable, effectively preventing the pesticide tank from shifting due to vibration or impact during flight, thereby improving the safety and stability of the pesticide spraying operation.

[0019] Optionally, the pesticide tank is also provided with a clamping portion corresponding to the medicine tank control box, and the medicine tank control box is grounded to the clamping portion.

[0020] By adopting the above technical solution, the clamping part on the pesticide tank can be accurately docked and fixed with the pesticide tank control box, further reducing the loosening or falling off caused by vibration during flight, and improving the overall stability and safety of the drone. At the same time, this design also helps to simplify the installation and removal process of the pesticide tank, making it easier to maintain and replace.

[0021] Optionally, a gravity sensor is also provided on the support rod, and the gravity sensor abuts against the clamping portion of the pesticide tank.

[0022] By adopting the above technical solution, the gravity sensor installed on the support rod can monitor the weight change of the pesticide tank in real time, ensure the accurate control of the pesticide dosage during the pesticide spraying process, and improve the work efficiency and safety. The gravity sensor abuts the clamping part of the pesticide tank, ensuring good contact between the sensor and the pesticide tank, and improving the measurement accuracy and reliability.

[0023] Optionally, mounting frames are provided at both ends of the frame in the length direction, the radar is installed on the mounting frames, and a lighting lamp is provided on the other mounting frame.

[0024] By adopting the above technical solutions, the radar is installed on the mounting frame to improve the detection range and accuracy of the radar, ensuring that the drone can effectively avoid obstacles during flight and improve safety. The lighting is set on another mounting frame to provide sufficient light in low light conditions, enhance operation visibility, and ensure the safety and efficiency of operations at night or in low light environments.

[0025] In summary, this application has at least the following beneficial effects: 1. The present application solves the problem that under the existing technology, some farmers with smaller farmlands want to spray pesticides by drones. Due to the small size of the farmland, the use of large drones increases the cost of spraying and makes the spraying more difficult. There are also relatively few people who can operate large drones. The present application provides a rotor-type drone that integrates various modules, which can efficiently spray pesticides and is more suitable for spraying small farmlands.

[0026] 2. The design of the support frame in this application enables the drone to be placed stably when not in operation, avoiding instability caused by factors such as wind speed, and improving the safety and stability of the equipment.

[0027] 3. The nozzle is set under the wing and connected to the extraction pump through a hose. At the same time, a centrifugal nozzle is used for spraying, which achieves precise spraying, improves drug utilization and reduces waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a three-dimensional diagram of the first embodiment.

[0029] Figure 2 It is a stereogram of the first embodiment, mainly used to show the wing rod.

[0030] Figure 3 It is a stereogram of the first embodiment, mainly used to display the pesticide tank.

[0031] Figure 4 It is a cross-sectional view of the wing rod in the first embodiment.

[0032] Figure 5 It is a cross-sectional view of the second embodiment.

[0033] Description of reference numerals: 1. Frame; 11. Wing control box; 12. Radar; 13. Medicine tank control box; 14. Folding frame; 15. Support rod; 151. Gravity sensor; 16. Mounting frame; 161. Lighting lamp; 2. Pesticide tank; 21. Extraction pump; 22. Hose; 23. Clamping part; 3. wing bar; 31. wing; 32. pipeline channel; 33. nozzle; 331. centrifugal nozzle; 4. Buffer parachute; 41. Parachute rope; 5. Rope winding box; 51. Rope winding wheel; 52. Height sensor. DETAILED DESCRIPTION

[0034] The present application is further described in detail below through specific embodiments in conjunction with the accompanying drawings.

[0035] Embodiment 1 A drone for pesticide spraying, such as Figure 1 and Figure 2 As shown, it includes a frame 1, a pesticide tank 2 is arranged in the middle of the frame 1, and the pesticide tank 2 is detachably connected to the frame 1. A wing 31 control box 11 and a radar 12 are arranged at one end of the frame 1 in the length direction, and a medicine tank control box 13 is arranged at the other end of the frame 1 in the length direction. Support frames are arranged on both sides of the frame 1 in the length direction, and the support frames are used to abut the ground. In specific implementation, a tank cover is also arranged on the pesticide tank 2, and the pesticide can be injected when the tank cover is opened. The support frame is made of carbon fiber material, which can have strong strength and is not easy to be damaged during repeated take-off and landing.

[0036] like Figure 1 and Figure 2 As shown, the four corners of the frame 1 are provided with wing rods 3, and the end of the wing rod 3 away from the frame 1 is provided with a wing 31 driven by a motor, the wing 31 is electrically connected to the control box, and the wing 31 control box 11 is used to control the wing 31 and supply power to the wing 31. Each wing rod 3 is provided with a nozzle 33, which is arranged on the lower side of the wing 31 and is used to spray liquid. In specific implementation, the nozzle 33 can spray pesticides at four positions at the same time to improve the coverage of the spraying.

[0037] like Figure 1 and Figure 2As shown, the pesticide tank 2 is provided with four extraction pumps 21, and hoses 22 are provided at both ends of the extraction pumps 21. The hose 22 at one end of the extraction pump 21 is used to extract the liquid in the pesticide tank 2, and the hose 22 at the other end of the extraction pump 21 is connected to the corresponding nozzle 33. The medicine tank control box 13 is used to power the extraction pump 21 and control the extraction pump 21. The frame body 1 is provided with a folding frame 14 corresponding to the wing rod 3, and the wing rod 3 is rotatably connected to the folding frame 14, and the folding frame 14 is used to lock the rotation angle of the wing rod 3. In specific implementation, the wing bar 3 can be folded up when the drone is stored to improve portability, and the wing bar 3 and the folding frame 14 are both tilted and tilted in the same direction and angle to reduce the interference of the wing bars 3 when stored. A folding handle is also provided on the folding frame 14, and the folding handle is rotatably connected to the folding frame 14. A folding rod is also provided between the folding handle and the wing bar 3, one end of the folding rod is hinged to the folding handle, and the other end of the folding rod is hinged to the wing bar 3. When the folding handle is rotated, the wing bar 3 can be driven to rotate through the folding rod, and the folding rod is close to the folding frame 14. A torsion spring is provided at the hinge of the folding handle. The torsion spring has a tendency to push the folding rod toward the folding handle. When the wing rod 3 is folded, the torsion spring has a tendency to push the folding rod to interfere with the wing rod 3. When folded, the folding rod interferes with the wing rod 3 under the action of the torsion spring. To reopen, the folding handle and the wing rod 3 need to be pulled at the same time. When opening, the folding rod moves toward the folding handle under the action of the torsion spring. When folding and storing, the force of the torsion spring needs to be overcome to fold. This can better fix the position of the wing rod 3 and reduce the movement of the wing rod 3 during flight.

[0038] like Figure 3 and Figure 4 As shown, the hose 22 is arranged along the frame 1, a pipeline channel 32 is opened in the wing rod 3, the hose 22 is embedded in the pipeline channel 32, and one end of the hose 22 away from the frame 1 extends out of the pipeline channel 32 and is connected to the nozzle 33. The end of the hose 22 away from the extraction pump 21 is connected to the bottom of the pesticide tank 2, and the extraction pumps 21 are connected to each other through the hose 22. In specific implementation, the hose 22 is arranged along the frame 1 when it is beside the frame 1, and is arranged along the inside at the wing rod 3. The hose 22 is protected by the frame 1 and the wing rod 3 to reduce the impact of the external environment on the hose 22. In specific use, the hose 22 can be further fixed to the frame 1 by a cable tie to further improve the stability of the hose 22.

[0039] like Figure 1 and Figure 4As shown, the nozzle 33 is rotatably connected to the wing rod 3, and a locking piece is also provided at the rotation connection of the nozzle 33, and the locking piece is used to lock the rotation angle of the nozzle 33. A centrifugal nozzle 331 is provided at the bottom of the nozzle 33, and the centrifugal nozzle 331 is used to spray a water film with centrifugal force. In specific implementation, the nozzle 33 can adjust the angle according to the spraying demand, thereby changing the spraying range of the pesticide, and the centrifugal nozzle 331 can make the pesticide atomized to form a water film for spraying, thereby increasing the spraying range of the pesticide.

[0040] like Figure 1 and Figure 2 As shown, a support rod 15 is provided on the frame 1 corresponding to the pesticide tank 2, and a clamping portion 23 is provided on the pesticide tank 2 toward the support rod 15, and the support rod 15 is used to support the clamping portion 23. The pesticide tank 2 is also provided with a clamping portion 23 corresponding to the medicine tank control box 13, and the medicine tank control box 13 is grounded with the clamping portion 23. A gravity sensor 151 is also provided on the support rod 15, and the gravity sensor 151 abuts against the clamping portion 23 of the pesticide tank 2. In specific implementation, the gravity sensor 151 can monitor the weight of the pesticide tank 2 in real time, so as to observe the remaining amount of the medicine liquid in the pesticide tank 2. When the remaining amount of the medicine liquid is small, the drone can be landed to replenish the medicine liquid.

[0041] like Figure 1 and Figure 2 As shown, mounting frames 16 are provided at both ends of the frame 1 in the length direction, the radar 12 is installed on the mounting frames 16, and a lighting lamp 161 is provided on the other mounting frame 16. In specific implementation, the lighting lamp 161 can illuminate at night to improve the convenience of operation and can also indicate the position of the drone.

[0042] Working principle: The various components for pesticide spraying are integrated on the drone. When needed, the wing rod 3 is flipped out, the angle of the nozzle 33 is adjusted, and the nozzle 33 and the wing rod 3 are locked. Then, the pesticide is filled and the drone can be driven to spray the pesticide.

[0043] Embodiment 2 like Figure 5As shown, the main difference between Example 2 and Example 1 is that a buffer umbrella 4 is provided on the frame 1 in Example 2, and the buffer umbrella 4 cover is arranged on the pesticide tank 2, and rope winding boxes 5 are provided on both sides of the frame 1 corresponding to the buffer umbrella 4, and a plurality of rope winding wheels 51 are provided inside the rope winding box 5. The rope winding wheels 51 are rotatably arranged in the rope winding box 5 and are all transmission connected to each other. A motor for driving the rope winding wheels 51 to rotate is also provided in the rope winding box 5, and the umbrella rope 41 of the buffer umbrella 4 extends into the rope winding box 5 and is fixedly connected to the rope winding wheel 51. In specific implementation, the buffer umbrella 4 does not interfere with the wing 31 when opened, reducing the impact on flight. When the pesticide tank 2 is not installed, the rope reel 51 can be controlled to loosen the umbrella rope 41. When the filling of pesticides and the installation of the pesticide tank 2 are completed, the rope reel 51 can be controlled to reel in and tighten the umbrella rope 41. The buffer umbrella 4 can assist in fixing the pesticide tank 2 on the frame 1. When the UAV needs to land or the UAV wing 31 fails, the rope reel 51 can release the umbrella rope 41, and then release the buffer umbrella 4, so that the UAV can slowly fall from the air, reducing the damage of the UAV due to high-speed falling, and reducing the occurrence of safety hazards.

[0044] like Figure 5 As shown, the frame 1 is also provided with a height sensor 52, which is used to detect the height of the drone, and is electrically connected to the rope reel box 5 and is used to control the rope reel 51. In specific implementation, the rope reel 51 and the height sensor 52 use independent power supplies, and the height sensor 52 can detect the height of the drone in real time. When the drone fails, the height of the drone will drop suddenly. At this time, the height sensor 52 can timely control the release of the rope reel 51, release the parachute rope 41, and release the buffer parachute 4. The buffer parachute 4 can be opened in the air to allow the drone to slowly descend, reduce the explosion of the drone due to high-speed falling, and reduce safety hazards.

[0045] Working principle: The basic working principle is the same as that of the first embodiment, but a buffer umbrella 4 is provided to assist in the installation of the pesticide tank 2. When the buffer umbrella 4 is not opened, the pesticide tank 2 and the frame 1 can be installed more tightly under the pull of the rope reel 51, and when the buffer umbrella 4 is opened, it can buffer the descent speed of the drone in the air, respond to emergencies such as drone failures in the air, and reduce safety hazards caused by drone crashes.

[0046] The above are preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A drone for pesticide spraying, characterized by: The invention comprises a frame (1), a pesticide tank (2) is arranged in the middle of the frame (1), the pesticide tank (2) is detachably connected to the frame (1), a wing (31) control box (11) and a radar (12) are arranged at one end of the frame (1) in the length direction, a pesticide tank control box (13) is arranged at the other end of the frame (1) in the length direction, and support frames are arranged on both sides of the frame (1) in the length direction, and the support frames are used to abut against the ground; The frame (1) is provided with wing rods (3) at four corners, and a wing (31) driven by a motor is provided at one end of the wing rod (3) away from the frame (1), and the wing (31) is electrically connected to a control box, and the wing (31) control box (11) is used to control the wing (31) and supply power to the wing (31), and each of the wing rods (3) is provided with a nozzle (33), and the nozzle (33) is arranged on the lower side of the wing (31), and the nozzle (33) is used to spray liquid; The pesticide tank (2) is provided with four extraction pumps (21), and both ends of the extraction pumps (21) are provided with hoses (22). The hose (22) at one end of the extraction pump (21) is used to extract the liquid medicine in the pesticide tank (2), and the hose (22) at the other end of the extraction pump (21) is connected to the corresponding nozzle (33). The medicine tank control box (13) is used to supply power to the extraction pump (21) and control the extraction pump (21).

2. The pesticide spraying drone according to claim 1, characterized in that: The hose (22) is arranged along the frame (1), a pipeline channel (32) is opened in the wing rod (3), the hose (22) is embedded in the pipeline channel (32), and one end of the hose (22) away from the frame (1) extends out of the pipeline channel (32) and is connected to the nozzle (33).

3. The pesticide spraying drone according to claim 1, characterized in that: One end of the hose (22) away from the extraction pump (21) is connected to the bottom of the pesticide tank (2), and the extraction pumps (21) are connected to each other via the hose (22).

4. The pesticide spraying drone according to claim 1, characterized in that: The frame body (1) is provided with a folding frame (14) corresponding to the wing rod (3); the wing rod (3) is rotatably connected to the folding frame (14); and the folding frame (14) is used to lock the rotation angle of the wing rod (3).

5. The pesticide spraying drone according to claim 4, characterized in that: The spray head (33) is rotatably connected to the wing rod (3), and a locking piece is also provided at the rotational connection of the spray head (33), and the locking piece is used to lock the rotational angle of the spray head (33).

6. The pesticide spraying drone according to claim 5, characterized in that: A centrifugal nozzle (331) is provided at the bottom of the nozzle (33), and the centrifugal nozzle (331) is used to spray a water film with centrifugal force.

7. The pesticide spraying drone according to claim 1, characterized in that: A support rod (15) is provided on the frame (1) corresponding to the pesticide tank (2), and a clamping portion (23) is provided on the pesticide tank (2) facing the support rod (15), and the support rod (15) is used to support the clamping portion (23).

8. The pesticide spraying drone according to claim 7, characterized in that: The pesticide tank (2) is also provided with a clamping portion (23) corresponding to the medicine tank control box (13), and the medicine tank control box (13) is grounded to the clamping portion (23).

9. The pesticide spraying drone according to claim 7, characterized in that: The support rod (15) is also provided with a gravity sensor (151), and the gravity sensor (151) abuts against the clamping portion (23) of the pesticide tank (2).

10. The pesticide spraying drone according to claim 1, characterized in that: Both ends of the frame (1) in the length direction are provided with mounting frames (16), the radar (12) is installed on the mounting frames (16), and an illumination lamp (161) is provided on the other mounting frame (16).

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