An unmanned aerial vehicle for spraying pesticides
By incorporating a float plate and a limiting rod structure inside the medicine tank, the instability of the drone caused by the sloshing of the medicine liquid was resolved, thereby improving the stability and safety of the drone's flight.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 南京钢果电子科技有限公司
- Filing Date
- 2025-09-04
- Publication Date
- 2026-06-16
AI Technical Summary
During the application of pesticides, existing pesticide spraying drones suffer from unstable flight and may even crash due to the large size of the pesticide tank and the violent shaking of the pesticide solution caused by external factors such as wind.
A float plate and limiting rod structure are installed inside the medicine tank. The float plate covers the liquid medicine, reducing the free flow space and converting large-amplitude shaking into high-frequency small-amplitude vibration, thus ensuring the flight stability of the drone.
It effectively reduces the amplitude of liquid sloshing, improves the stability and safety of drone flight, prevents crashes, and ensures the continuity of the application process.
Smart Images
Figure CN224361379U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of unmanned aerial vehicle (UAV) technology, specifically relating to a UAV for spraying pesticides. Background Technology
[0002] In recent years, with the rapid development of geographic information systems, global positioning systems, image processing technology, remote sensing technology, and variable operation technology, unmanned aerial vehicles (UAVs) are unmanned aircraft controlled by radio remote control equipment and onboard program control devices, or operated autonomously by onboard computers, either completely or intermittently. UAVs are currently used in aerial photography, agriculture, plant protection, miniature selfies, and express delivery. Plant protection spraying is a crucial part of agricultural production. Traditional manual backpack spraying is inefficient and labor-intensive, and ground-based spraying equipment leaves tracks in the fields and can easily damage crops. Agricultural plant protection UAVs, on the other hand, spray pesticides in farmland to kill insects and sterilize, thereby improving crop growth rates. They are characterized by high operational efficiency, wide adaptability, and good operational quality.
[0003] To increase the area sprayed in a single application and reduce the number of trips, existing pesticide spraying drones typically use large tanks during application. Due to the large size of the tank, the liquid pesticide will continuously tilt with slight deviations of the aircraft during operation, caused by external factors such as wind. This results in violent shaking of the liquid pesticide inside due to inertia, which affects the stability of the drone during flight, causing instability in the drone system's center of gravity, and in severe cases, leading to the drone crashing. Utility Model Content
[0004] The purpose of this invention is to provide a drone for spraying pesticides. By setting up a float to cover the pesticide liquid, the free flow space of the liquid can be reduced, the swaying amplitude can be reduced, and the large amplitude swaying can be converted into high-frequency small amplitude vibration, thereby ensuring improved flight stability of the drone.
[0005] The specific technical solution adopted by this utility model is as follows:
[0006] A pesticide spraying drone includes a drone body, the bottom of which is detachably connected to a pesticide tank. Lifting grooves are respectively opened on both sides inside the pesticide tank. A positioning hole is opened inside the lifting groove. A limiting rod is slidably connected inside the positioning hole. An elastic element is assembled between the limiting rod and the positioning hole.
[0007] A float plate is slidably connected to the interior of the medicine box, and both sides of the float plate are fixedly connected to counterweights. The counterweights are slidably connected to the lifting groove, and the counterweights are provided with sliding grooves, the interior of which is slidably connected to the sliding block.
[0008] The floating plate, in conjunction with the lifting trough, can cover the liquid inside the medicine tank, reducing the free flow space of the liquid and decreasing the amplitude of swaying. Through physical constraint, large-amplitude swaying is converted into high-frequency small-amplitude vibration, thereby ensuring improved flight stability of the UAV.
[0009] Furthermore, there are multiple positioning holes, which are equidistantly spaced along the interior of the lifting groove, and the interior of each positioning hole is slidably connected to a plurality of limiting rods.
[0010] Furthermore, one end of the limiting rod located inside the positioning hole is fixedly connected to one end of the elastic element, and the other end of the elastic element is fixedly connected to the interior of the positioning hole.
[0011] Furthermore, the sliding block has a trapezoidal shape, with its top and bottom surfaces being inclined.
[0012] Furthermore, a return spring is fitted between the top of the sliding block and the sliding groove.
[0013] Furthermore, the medicine box has a medicine filling port on its outer side, and a protective cover is provided at the medicine filling port.
[0014] The technical effects achieved by this utility model are as follows:
[0015] This utility model discloses a pesticide spraying drone. By setting up a float plate to cover the pesticide solution, it ensures that when the drone tilts or accelerates during flight, the float plate, in conjunction with a limiting rod, covers the pesticide solution, thereby reducing the space for free movement of the pesticide solution and decreasing the amplitude of the movement. This transforms large-amplitude swaying into high-frequency, small-amplitude vibration, ensuring improved flight stability for the drone. Simultaneously, when adding pesticide solution, the solution causes the float plate to rise and reset. Through the cooperation of a sliding block on the float plate and the limiting rod, the limiting rod is released, ensuring that the float plate remains above the pesticide solution without external force. The contact area and frictional resistance disperse the liquid impact force. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall structure of this practical application;
[0017] Figure 2 This is a partial sectional view of this practical medicine box and its floating platform;
[0018] Figure 3 This is a practical book Figure 2 Enlarged view of a portion of point A in the middle;
[0019] Figure 4 This is a schematic diagram of local structural adjustment in this practical application;
[0020] Figure 5 This is a practical book Figure 4 A magnified view of a portion of point B in the middle.
[0021] The attached diagram lists the components represented by each number as follows:
[0022] 10. UAV body; 20. Medicine box; 21. Lifting groove; 22. Positioning hole; 23. Limiting rod; 24. Elastic component; 30. Float plate; 31. Counterweight; 311. Sliding groove; 312. Sliding block. Detailed Implementation
[0023] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific implementations of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.
[0024] like Figures 1 to 5 As shown, a pesticide spraying drone includes a drone body 10. The bottom of the drone body 10 is detachably connected to a pesticide tank 20. Lifting grooves 21 are respectively opened on both sides inside the pesticide tank 20. Positioning holes 22 are opened inside the lifting grooves 21. The interior of the positioning holes 22 is slidably connected to a limiting rod 23. An elastic element 24 is assembled between the limiting rod 23 and the positioning hole 22.
[0025] The float plate 30 is slidably connected to the inside of the medicine box 20, and the two sides of the float plate 30 are respectively fixedly connected to the counterweight block 31. The counterweight block 31 is slidably connected to the lifting groove 21, and the counterweight block 31 is provided with a sliding groove 311. The inside of the sliding groove 311 is slidably connected to the sliding block 312.
[0026] The floating plate 30, in conjunction with the lifting trough 21, can cover the liquid inside the medicine tank 20, reduce the free flow space of the liquid, reduce the swaying amplitude, and transform large-amplitude swaying into high-frequency small-amplitude vibration through physical constraints, thereby ensuring improved flight stability of the UAV body 10.
[0027] In this embodiment, it should be noted that a remote control device is used with the drone body 10; it should also be noted that the weight of the counterweight 31 is greater than the elastic force of the elastic element 24; when the liquid medicine inside the medicine tank 20 descends, the float 30 floating on top of the liquid medicine will descend along with the liquid medicine. When the float 30 contacts the limiting rod 23, the counterweight 31 squeezes the limiting rod 23 to ensure that when the float 30 descends due to the decrease in liquid medicine, the limiting rod 23 will not obstruct the float 30. During the descent of the float 30, the outer side of the counterweight 31 continuously slides against the limiting rod 23. When the limiting rod 23 moves to the sliding... When the liquid is at the bottom of the sliding groove 311, that is, above the guide groove, the elastic element 24 is not squeezed by external force. When the limiting rod 23 is squeezed, it will squeeze the elastic element 24, causing the elastic element 24 to compress and charge. Then, when the elastic element 24 is not subjected to external force, it will release energy to drive the limiting rod 23 to rebound, so that the limiting rod 23 is located in the sliding groove 311 to limit the float 30. When the liquid continues to fall, the limiting rod 23 and the float 30 cooperate to continuously constrain the liquid, so that the liquid in the medicine tank 20 will not shake significantly, thereby improving the stability and safety of the drone's drug application process.
[0028] Preferably, there are multiple positioning holes 22, which are equidistantly opened along the interior of the lifting groove 21, and the interior of each positioning hole 22 is slidably connected to a multiple limiting rod 23. By opening multiple positioning holes 22 at equal intervals, the float 30 is continuously limited, preventing the float 30 from moving due to the impact of the liquid, ensuring that the float 30 is always above the liquid, and dispersing the liquid impact force through contact area and frictional resistance.
[0029] like Figure 2 , Figure 4 As shown, one end of the limiting rod 23 located inside the positioning hole 22 is fixedly connected to one end of the elastic element 24, and the other end of the elastic element 24 is fixedly connected to the inside of the positioning hole 22; wherein, the other end of the limiting rod 23 is a spherical surface, wherein when the spherical surface contacts the counterweight 31, it will reduce the friction between the limiting rod 23 and the counterweight 31, thereby ensuring that the float 30 can descend stably.
[0030] like Figure 3 , Figure 5 As shown, the sliding block 312 has a trapezoidal shape, with inclined surfaces on the top and bottom, and the guide groove is an inclined groove.
[0031] Preferably, a return spring is fitted between the top of the sliding block 312 and the sliding groove 311.
[0032] In this embodiment, it should be noted that when liquid is added to the medicine tank 20, the float 30 will rise and fall with the increase of liquid. Since the elastic force of the elastic element 24 is greater than the elastic force of the return spring, during the rise of the float 30, the counterweight block 31 will squeeze the limiting rod 23. The limiting rod 23 interacts with the sliding block 312, causing the sliding block 312 to move in the sliding groove 311. At the same time, the return spring will extend and charge. When the bottom of the sliding block 312 is in contact with the bottom of the sliding groove 311, the limiting rod 23 will be compressed and move along the inclined surface above the sliding block 312 to the outside of the counterweight block 31, and then along the counterweight block 31 to the bottom of the float 30. This ensures that the float 30 rises stably with the increase of liquid and automatically completes the reset without manual intervention.
[0033] Preferably, the medicine tank 20 has a medicine filling port on the outside, and the medicine filling port is equipped with a protective cover. By opening the medicine filling port, the medicine liquid can be effectively added to the inside of the medicine tank 20 to ensure effective replenishment and long-term spraying of medicine liquid.
[0034] The working principle of this utility model is as follows: By adding sprayable liquid to the inside of the medicine tank 20 and connecting the medicine tank 20 to the bottom of the drone body 10, the liquid inside the medicine tank 20 is covered by a float 30 during drone flight, reducing the sloshing of the liquid and ensuring stable drone flight and spraying. When the liquid in the medicine tank 20 continuously descends through spraying, the float 30 descends with the liquid, preventing significant tilting or sloshing. Since the float 30 is equipped with a counterweight 31, the outer limiting rod 23 of the counterweight 31 compresses it, ensuring that the limiting rod 23 does not obstruct the descent of the float 30. When the limiting rod 23 is at... When the float is in the sliding groove 311, it will limit the movement of the float 30 to prevent the liquid from splashing and causing it to move. When the drone needs to be resupplyed, liquid is added to the medicine tank 20. At this time, the float 30 will rise with the increase of liquid. During the rising process, the float 30 drives the counterweight 31 and the limiting rod 23 to work together. The limiting rod 23 drives the sliding block 312 to move in the sliding groove 311, thereby ensuring that the limiting rod 23 can move to the bottom of the float 30 along the outside of the sliding block 312. This ensures that the limiting rod 23 will not cause any limiting effect during the rise of the float 30, so that the float 30 can automatically rise and reset without the need for external force.
[0035] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.
Claims
1. A pesticide spraying drone, comprising a drone body (10), characterized in that: The bottom of the drone body (10) is detachably connected to the medicine box (20). The medicine box (20) has lifting grooves (21) on both sides inside. The lifting grooves (21) have positioning holes (22) inside. The positioning holes (22) are slidably connected to the limiting rod (23). An elastic element (24) is assembled between the limiting rod (23) and the positioning hole (22). A float plate (30) is slidably connected to the inside of the medicine box (20), and both sides of the float plate (30) are fixedly connected to a counterweight (31). The counterweight (31) is slidably connected to the lifting groove (21), and the counterweight (31) is provided with a sliding groove (311). The inside of the sliding groove (311) is slidably connected to a sliding block (312). The floating plate (30) and the lifting groove (21) work together to cover the liquid inside the medicine tank (20), reduce the free flow space of the liquid, reduce the swaying amplitude, and convert large amplitude swaying into high frequency small amplitude vibration through physical constraints, thereby ensuring improved flight stability of the UAV body (10).
2. The pesticide spraying drone according to claim 1, characterized in that: The number of positioning holes (22) is multiple, and the multiple positioning holes (22) are equally spaced along the inside of the lifting groove (21), and the inside of the multiple positioning holes (22) is slidably connected to the multiple limiting rods (23).
3. The pesticide spraying drone according to claim 2, characterized in that: One end of the limiting rod (23) located inside the positioning hole (22) is fixedly connected to one end of the elastic element (24), and the other end of the elastic element (24) is fixedly connected to the inside of the positioning hole (22).
4. The pesticide spraying drone according to claim 1, characterized in that: The sliding block (312) has a trapezoidal shape and is inclined at the top and bottom.
5. The pesticide spraying drone according to claim 4, characterized in that: A return spring is fitted between the top of the sliding block (312) and the sliding groove (311).
6. The pesticide spraying drone according to claim 1, characterized in that: The medicine box (20) has a medicine inlet on the outside, and a protective cover is provided at the medicine inlet.