An aerial spraying device for an agricultural unmanned aerial vehicle

Abstract

The utility model belongs to the technical field of plant protection unmanned plane, concretely relates to a plant protection unmanned plane airborne spraying device, including frame, be provided with the lift monitoring mechanism in the upper portion of frame, be provided with the rotary spraying mechanism on the lift monitoring mechanism. Through the setting of rotary spraying mechanism, the double -end electric hydraulic telescopic link is started to push the rack transverse movement, and is engaged to install one side gear rotation, makes the rotation axis, the baffle cylinder, the rotation centrifugal spraying subassembly carries out the rotation, the pump body is started to draw out the pesticide in the medicine box through the flow divider, simultaneously starts the rotation centrifugal spraying subassembly and carries out the centrifugal spraying, when needing to the rotation centrifugal spraying subassembly in the baffle cylinder is lifted, can start the electric lifting rod control rotation centrifugal spraying subassembly carries out, through the setting of baffle cylinder, when using, through the baffle cylinder can prevent the turbulent airflow that produces when unmanned plane flies to the pesticide that the spray head sprays carries out dispersion, has guaranteed the stable control effect to the pesticide that sprays, and the practicality is strong.

Description

Technical Field

[0001] This utility model belongs to the field of agricultural drone technology, specifically relating to an airborne spraying device for agricultural drones. Background Technology

[0002] Agricultural drones are unmanned aerial vehicles used in agriculture. As the name suggests, they are unmanned aircraft used for the protection of agricultural and forestry plants. Their purpose is to help increase crop yields and monitor crop growth. This type of drone consists of three parts: a flight platform (fixed-wing, helicopter, multi-rotor aircraft), a navigation and flight control system, and a spraying mechanism. Spraying operations are carried out through ground remote control or navigation and flight control. They can spray pesticides, seeds, and powders, etc.

[0003] A search revealed a Chinese utility model patent application with patent publication number CN211731831U, which discloses a crop protection drone spraying device. The device includes a drone body and a liquid tank located at the bottom of the drone body. During operation, the liquid is transported from the liquid tank to the spraying mechanism through a liquid pipe. The motor drives the spraying mechanism to rotate at high speed. Under the action of centrifugal force, the liquid is sprayed out from the nozzle on the outside of the spiral pipe. The spiral pipe design allows the liquid to be sprayed onto the crops from the inside out, covering a large area. The electric telescopic rod can drive the spraying mechanism to rotate left and right at a certain angle.

[0004] Regarding the aforementioned technologies, the sprayed pesticides are easily affected by external airflow during spraying operations, resulting in the pesticides not reaching the designated locations effectively and causing pesticide waste. Therefore, there is an urgent need to design an airborne spraying device for agricultural protection drones to address these issues. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model discloses an airborne spraying device for plant protection drones.

[0006] This utility model achieves the above objectives through the following technical solutions:

[0007] A plant protection drone-borne spraying device includes a frame, a lifting and monitoring mechanism on top of the frame, and a rotating spraying mechanism on the lifting and monitoring mechanism.

[0008] The rotary spraying mechanism includes a medicine tank fixedly mounted above the frame, a flow meter and a weighing sensor fixedly mounted on the medicine tank, a pump body fixedly mounted inside the medicine tank, a flow divider fixedly mounted on the pump body, a double-headed electro-hydraulic telescopic rod fixedly mounted on the lifting and monitoring mechanism, racks mounted on both ends of the double-headed electro-hydraulic telescopic rod, a vertically rotating shaft mounted on the frame, gears fixedly mounted on the outer surface of the shaft, a baffle fixedly mounted at one end of the shaft, an electric lifting rod fixedly mounted inside the baffle, and a rotary centrifugal spraying component fixedly mounted at the power extension end of the electric lifting rod.

[0009] Preferably, the lifting monitoring mechanism includes a main frame fixedly installed below the frame, a support base fixedly installed on both sides of the main frame, an installation platform fixedly installed inside the main frame, a drive motor fixedly installed above the installation platform, a lifting component fixedly installed on the power end of the drive motor, a frame fixedly installed on the lifting component, a monitoring component fixedly installed on the front side of the frame, and a power supply fixedly installed on the rear side of the main frame.

[0010] Preferably, the rotary centrifugal spraying assembly includes a power motor installed at the power extension end of the electric lifting rod, and a centrifugal spraying disc is fixedly installed at the power end of the power motor.

[0011] Preferably, a medicine delivery tube is vertically fixed above the medicine box, and a rack and a gear mesh with each other.

[0012] Preferably, the lifting assembly includes a lead screw disposed at the power end of the drive motor, and a lifting platform is connected to the outer surface of the lead screw by a thread.

[0013] Preferably, the monitoring component includes a connecting rod disposed on the front side of the frame, and a monitoring probe is fixedly mounted on the connecting rod.

[0014] The beneficial effects are:

[0015] This utility model discloses an airborne spraying device for agricultural protection drones. Through a rotating spraying mechanism, during use, the activation of a double-headed electric hydraulic telescopic rod pushes the rack to move laterally and engages with a gear on one side, causing the rotating shaft, baffle, and rotating centrifugal spraying assembly to rotate. The pump body is activated to extract the pesticide from the tank through a distributor, while the rotating centrifugal spraying assembly performs centrifugal spraying. When it is necessary to raise or lower the rotating centrifugal spraying assembly within the baffle, an electric lifting rod can be activated to control the assembly. The baffle prevents turbulent airflow generated during drone flight from dispersing the pesticide sprayed from the nozzle, ensuring stable control of the sprayed pesticide and ensuring it reaches the designated area, thus improving spraying efficiency and practicality. Attached Figure Description

[0016] Figure 1This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a front view structural diagram of this utility model;

[0018] Figure 3 This is a schematic diagram of the structure of this utility model from another perspective;

[0019] Figure 4 This is a schematic diagram of the right-side cross-sectional structure of this utility model;

[0020] Figure 5 yes Figure 1 A schematic diagram of the structure at point A in the middle.

[0021] In the diagram: 1. Frame; 2. Lifting and monitoring mechanism; 201. Main frame; 202. Support base frame; 203. Mounting platform; 204. Drive motor; 205. Lead screw; 206. Lifting platform; 207. Frame; 208. Connecting rod; 209. Monitoring probe; 210. Power supply; 3. Rotary spraying mechanism; 301. Medicine tank; 3011. Medicine supply pipe; 302. Flow meter; 303. Weighing sensor; 304. Pump body; 3041. Diverter; 305. Double-headed electric hydraulic telescopic rod; 306. Rack; 307. Gear; 308. Rotating shaft; 309. Baffle; 310. Electric lifting rod; 311. Power motor; 312. Centrifugal spraying disc. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. The terms "first", "second", and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] Reference Figure 1-5 One embodiment of this utility model is a plant protection drone-borne spraying device, including a frame 1, a lifting and monitoring mechanism 2 above the frame 1, and a rotating spraying mechanism 3 on the lifting and monitoring mechanism 2.

[0026] In this embodiment: the lifting monitoring mechanism 2 includes a main frame 201 fixedly installed below the frame 1. Support frames 202 are fixedly installed on both sides of the main frame 201. A mounting platform 203 is fixedly installed inside the main frame 201. A drive motor 204 is fixedly installed above the mounting platform 203. A lifting assembly is fixedly installed at the power end of the drive motor 204. A frame 207 is fixedly installed on the lifting assembly. A monitoring component is fixedly installed on the front side of the frame 207. A power supply 210 is fixedly installed at the rear side of the main frame 201. The lifting assembly includes a lead screw 205 located at the power end of the drive motor 204. A lifting platform 206 is threadedly connected to the outer surface of the lead screw 205. The monitoring component includes a connecting rod 208 located at the front side of the frame 207. A monitoring probe 209 is fixedly installed on the connecting rod 208. The connecting rod 208 and the monitoring probe 209 are connected by bolts. The power supply 210 is electrically connected to the drive motor 204 and the monitoring probe 209.

[0027] In this embodiment: the rotary spraying mechanism 3 includes a medicine tank 301 fixedly mounted above the frame 1. A flow meter 302 is fixedly mounted on the medicine tank 301, which is used to calculate the actual flow rate, making the flow control more precise. A weighing sensor 303 is fixedly mounted on the medicine tank 301, which is used to confirm the dosage or weight of the medicine being sprayed, and provides a signal when there is no medicine, thereby improving work efficiency and saving battery consumption. A pump body 304 is fixedly mounted inside the medicine tank 301, and a distributor 3041 is fixedly mounted on the pump body 304. The distributor 3041 is used to distribute the medicine in the medicine tank 301. A distributor pipe is fixedly mounted on the distributor 3041, and the distributor pipe is connected to the centrifugal spraying disc 312 through a connecting hose. A double-headed electro-hydraulic telescopic rod 305 is fixedly installed on the lifting monitoring mechanism 2. Both ends of the double-headed electro-hydraulic telescopic rod 305 are movably mounted with racks 306. A rotating shaft 308 is vertically rotatably mounted on the frame 1. A gear 307 is fixedly mounted on the outer surface of the rotating shaft 308. A baffle 309 is fixedly mounted at one end of the rotating shaft 308. An electric lifting rod 310 is fixedly installed inside the baffle 309. A rotating centrifugal spraying assembly is fixedly installed at the power extension end of the electric lifting rod 310. The rotating centrifugal spraying assembly includes a power motor 311 located at the power extension end of the electric lifting rod 310. A centrifugal spraying disc 312 is fixedly mounted at the power end of the power motor 311. A medicine discharge pipe 3011 is vertically fixedly installed above the medicine tank 301. The racks 306 and gears 307 mesh with each other. A filter screen is fixedly installed on the inner wall of the medicine discharge pipe 3011. The higher the rotational speed of the centrifugal spraying assembly, the finer the droplets. It uses a standard dual atomizing disc and allows for selection of droplet size. The rotational speed is 6500 rpm for the coarsest droplet size and 14000 rpm for the finest droplet size, with an average droplet size of 60 micrometers. Finer droplets result in a greater number of droplets, which is beneficial for improving insecticidal and bactericidal effects. However, finer droplets are more prone to evaporation and drift. A guide plate (not shown in the figure) is installed on the lower outer edge of the baffle 309 via a connecting screw. The shape of the guide plate can be adjusted according to wind direction and force, allowing for adjustable spraying and preventing external airflow from significantly affecting the pesticide.

[0028] Working principle: In use, the prepared medicine is first poured into the medicine tank 301 through the medicine pipe 3011. The power supply 210 is turned on to enable the drone to take off. The drive motor 204 is turned on to drive the lead screw 205 to rotate, causing the lifting platform 206 mounted on the outer surface of the lead screw 205 to rise and fall, and driving the monitoring probe 209 to move down out of the main frame 201 for mobile monitoring. When the drone encounters turbulent airflow during flight, the double-headed electric hydraulic telescopic rod 305 is activated to push the rack 306 to move laterally and mesh with the gear 307 mounted on one side to rotate, causing the rotating shaft 308, the baffle 309, and the rotating centrifugal spraying assembly to rotate. The pump body 304 is activated to divert the flow. Device 3041 extracts the agent from the medicine tank 301 and simultaneously starts the rotating centrifugal spraying assembly for centrifugal spraying. At the same time, the spraying direction is controlled by the guide plate set on the lower outer edge of the baffle 309. When there is no turbulent airflow during the flight of the UAV, the electric lifting rod 310 can be activated to control the rotating centrifugal spraying assembly to descend and move out of the baffle 309. The agent enters the centrifugal spraying disc 312 through the connecting hose. The power motor 311 is started to drive the centrifugal spraying disc 312 to rotate. The agent sprayed by the centrifugal spraying disc 312 is sprayed through the guide plate. The multiple nozzles on the centrifugal spraying disc 312 can accelerate the spraying efficiency, thereby achieving the purpose of improving spraying efficiency and quality.

[0029] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An airborne spraying device for agricultural protection drones, characterized in that: Includes a frame (1), a lifting and monitoring mechanism (2) is provided above the frame (1), and a rotating spraying mechanism (3) is provided on the lifting and monitoring mechanism (2); The rotary spraying mechanism (3) includes a medicine tank (301) fixedly installed above the frame (1), a flow meter (302) fixedly installed on the medicine tank (301), a weighing sensor (303) fixedly installed on the medicine tank (301), a pump body (304) fixedly installed inside the medicine tank (301), a flow divider (3041) fixedly installed on the pump body (304), and a double-headed electric hydraulic telescopic rod (305) fixedly installed on the lifting monitoring mechanism (2). The double-headed electric hydraulic telescopic rod (305) has racks (306) installed at both ends of its power extension and retraction. A rotating shaft (308) is vertically rotatably mounted on the frame (1). A gear (307) is fixedly mounted on the outer surface of the rotating shaft (308). A baffle (309) is fixedly mounted at one end of the rotating shaft (308). An electric lifting rod (310) is fixedly mounted inside the baffle (309). A rotating centrifugal spraying component is fixedly installed at the power extension and retraction end of the electric lifting rod (310).

2. The plant protection drone-borne spraying device according to claim 1, characterized in that: The lifting monitoring mechanism (2) includes a main frame (201) fixedly installed below the frame (1), a support base (202) fixedly installed on both sides of the main frame (201), an installation platform (203) fixedly installed inside the main frame (201), a drive motor (204) fixedly installed above the installation platform (203), a lifting component fixedly installed at the power end of the drive motor (204), a frame (207) fixedly installed on the lifting component, a monitoring component fixedly installed on the front side of the frame (207), and a power supply (210) fixedly installed on the rear side of the main frame (201).

3. The plant protection drone-borne spraying device according to claim 1, characterized in that: The rotating centrifugal spraying assembly includes a power motor (311) disposed at the power extension end of the electric lifting rod (310), and a centrifugal spraying disc (312) is fixedly installed at the power end of the power motor (311).

4. The plant protection drone-borne spraying device according to claim 1, characterized in that: A medicine tube (3011) is vertically fixed above the medicine box (301), and the rack (306) meshes with the gear (307).

5. The plant protection drone-borne spraying device according to claim 2, characterized in that: The lifting assembly includes a lead screw (205) disposed at the power end of the drive motor (204), and a lifting platform (206) is connected to the outer surface of the lead screw (205) by a thread.

6. The plant protection drone-borne spraying device according to claim 2, characterized in that: The monitoring component includes a connecting rod (208) disposed on the front side of the frame (207), and a monitoring probe (209) is fixedly installed on the connecting rod (208).

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