An unmanned aerial vehicle for precise pesticide application on crops

Abstract

The utility model discloses an unmanned plane for precision pesticide application of crops, including unmanned plane body, detachable setting on the storage tank of unmanned plane body, the bottom of storage tank is provided with the pump body, the water outlet of pump body is fixedly connected with the hose, the other end fixedly connected with the nozzle of hose, the nozzle is rotationally arranged in the bottom of unmanned plane body through rotating component, the nozzle surface has a plurality of spray orifices, the nozzle whole presents inverted T, the spray orifice evenly distributes in the bottom of nozzle. In the utility model, through starting motor, driving driving gear rotation, driving gear drives driven gear rotation, driven gear happens spin through the rotation axis and drives the link block, finally realizes the angle adjustment to the nozzle, can accurate cover specified area (such as crop root), satisfies the control demand of root disease (such as wilt, root knot nematode), solves the dead angle of fixed angle coverage, avoids the waste of mist diffusion caused by the invalid spraying of nozzle.

Description

Technical Field

[0001] This utility model relates to the field of agricultural drone technology, specifically a drone for precision crop spraying. Background Technology

[0002] With the continuous development of agricultural informatization, drone spraying devices have been more widely used in agricultural planting. A pesticide spraying drone is an agricultural drone used to spray pesticides, fertilizers, and other crop inputs. This type of drone is typically equipped with a pesticide container and a spraying system that can evenly spray the inputs onto the crops. Drone spraying has many advantages, such as improving operational efficiency and reducing labor costs.

[0003] Spraying drones use nozzles at the bottom to spray pesticides, but the spray angle is usually fixed. For certain problems, the pesticides are difficult to cover. If the droplets are not sprayed at the right angle, they may drift away (lateral drift) or be intercepted by non-target parts (such as soil or parts unrelated to the crop), so the percentage of droplets that actually hit the pests and diseases is very low. When the same drone is used to spray different crops (such as corn in the morning and vegetables in the afternoon) or different growth stages (such as rice seedling stage vs. heading stage), the fixed angle cannot be quickly adapted. It is necessary to change the nozzle or adjust the flight altitude (which can easily lead to other problems, such as scraping the crop if the altitude is too low). Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a drone for precision crop spraying, which solves the problems mentioned in the background section.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model is implemented through the following technical solution: a drone for precision crop spraying, comprising a drone body and a detachable pesticide storage tank mounted on the drone body. A pump body is provided at the bottom of the pesticide storage tank. A hose is fixedly connected to the water outlet end of the pump body. A nozzle is fixedly connected to the other end of the hose. The nozzle is rotatably mounted on the bottom of the drone body via a rotating assembly. The nozzle surface has multiple spray holes. The nozzle is generally inverted T-shaped, and the spray holes are evenly distributed at the bottom of the nozzle.

[0008] Preferably, the rotating component includes a U-shaped block fixedly connected to the bottom of the UAV body, a horizontally placed rotating shaft is rotatably inserted inside the U-shaped block, a connecting block is fixedly connected to the rotating shaft, and the bottom of the connecting block is fixedly connected to the nozzle.

[0009] Preferably, a driven gear is fixedly connected to one end of the rotating shaft, a motor is fixedly installed at the bottom of the UAV body, a driving gear is fixedly connected to the output end of the motor, the driving gear meshes with the driven gear, and the pitch circle diameter of the driving gear is smaller than that of the driven gear.

[0010] Preferably, a protective cover with a cavity structure is fixedly connected to the bottom of the drone body, and the driving gear and driven gear are located inside the protective cover.

[0011] Preferably, the top of the drone body is connected to a liquid inlet pipe, and a sealing cap is detachably installed on the top of the liquid inlet pipe.

[0012] Preferably, the drone body has an insertion port, the medicine storage box is inserted into the insertion port, and multiple base blocks are fixedly connected to the top of the drone body. The base blocks are arranged in two rows and distributed on the front and rear sides of the insertion port. Each base block is threaded with a bolt. When the medicine storage box is fixed, the bolts abut against the side wall of the medicine storage box.

[0013] (III) Beneficial Effects

[0014] This utility model provides a drone for precision crop spraying, which has the following beneficial effects:

[0015] 1. In this utility model, by starting the motor, the driving gear is driven to rotate, the driving gear drives the driven gear to rotate, and the driven gear drives the connecting block to rotate through the rotating shaft, thus achieving the adjustment of the nozzle angle. This allows for precise coverage of designated areas (such as crop roots), meeting the needs for prevention and control of root diseases (such as wilt and root-knot nematodes), solving the problem of dead angles in coverage at fixed angles, and avoiding the waste of droplet diffusion caused by ineffective spraying of nozzles.

[0016] 2. In this utility model, the medicine storage box is inserted into the socket to achieve the initial positioning purpose. Then, by rotating the bolt, the end of the bolt abuts against the side wall of the medicine storage box to achieve the locking purpose. The medicine storage box has strong vibration resistance and does not shake or loosen when the drone is flying. When disassembling, after loosening the bolt in the reverse direction, the medicine storage box is lifted upward and quickly removed. The operation is efficient and adaptable to the needs of drone cleaning box operation. Attached Figure Description

[0017] Figure 1 This is a front-view stereoscopic structural diagram of a drone for precision crop spraying proposed in this utility model;

[0018] Figure 2 This is a bottom-view three-dimensional structural diagram of a drone for precision crop spraying proposed in this utility model;

[0019] Figure 3 for Figure 2A structural diagram showing the disassembled state of the protective cover;

[0020] Figure 4 This is a structural diagram showing the disassembled state of the pesticide storage box of a drone for precision crop application proposed in this utility model;

[0021] Figure 5 This is a partial cross-sectional view of a drone for precision crop spraying proposed in this utility model;

[0022] Figure 6 for Figure 3 Enlarged structural diagram at point A.

[0023] In the diagram: 1. UAV body; 101. Socket; 2. Medicine tank; 3. Pump body; 4. Hose; 5. Liquid inlet pipe; 6. Sealing cap; 7. Nozzle; 701. Spray hole; 8. Connecting block; 9. Shaft; 10. Driven gear; 11. Motor; 12. Drive gear; 13. Base block; 14. Bolt; 15. Protective cover; 16. U-shaped block. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0025] Please see Figures 1 to 6 This utility model provides a technical solution: a drone for precision crop spraying, including a drone body 1 and a detachable pesticide storage tank 2 on the drone body 1. A pump body 3 is provided at the bottom of the pesticide storage tank 2. A hose 4 is fixedly connected to the water outlet end of the pump body 3. A nozzle 7 is fixedly connected to the other end of the hose 4. The nozzle 7 is rotatably mounted on the bottom of the drone body 1 through a rotating component. The surface of the nozzle 7 has multiple spray holes 701. The nozzle 7 is generally inverted T-shaped, and the spray holes 701 are evenly distributed on the bottom of the nozzle 7.

[0026] When spraying pesticides, the pump body 3 is activated to draw the pesticide solution inside the storage tank 2 into the hose 4, and then sprays it out through multiple spray holes 701 on the nozzle 7, spraying it towards the designated location of the vegetation to meet the prevention and control needs, solve the dead angle of coverage at fixed angles, and avoid the waste of droplet diffusion caused by ineffective spraying of the nozzle 7.

[0027] It should be noted that hose 4 is made of PU steel wire reinforced hose (inner diameter 8-10mm) that is resistant to pesticide corrosion, and has both flexibility and pressure resistance, so as to avoid pipe bending and blockage caused by drone flight vibration; hose 4 has a length of 10-15cm redundancy to accommodate nozzle 7 angle adjustment without pulling on the interface.

[0028] The hose 4 end and the nozzle 7 can be connected by a thread. The hose 4 end is pre-installed with a stainless steel threaded connector (male), and the nozzle 7 end is equipped with a stainless steel internal thread base (female) to achieve threaded installation and facilitate disassembly and assembly. Both are made of 304 stainless steel (rust-proof and resistant to pesticide corrosion).

[0029] Reference Figure 6 The rotating component includes a U-shaped block 16 fixedly connected to the bottom of the UAV body 1. A horizontally placed rotating shaft 9 is inserted inside the U-shaped block 16. A connecting block 8 is fixedly connected to the rotating shaft 9. The bottom of the connecting block 8 is fixedly connected to the nozzle 7. The connecting block 8 can rotate on the U-shaped block 16 through the rotating shaft 9, providing a basis for adjusting the angle of the nozzle 7.

[0030] Reference Figure 6 One end of the rotating shaft 9 is fixedly connected to the driven gear 10, and the bottom of the drone body 1 is fixedly installed with the motor 11. The output end of the motor 11 is fixedly connected to the driving gear 12. The driving gear 12 meshes with the driven gear 10. The pitch circle diameter of the driving gear 12 is smaller than that of the driven gear 10. This can not only accurately reduce speed, but also ensure smooth angle adjustment through the meshing characteristics of gear transmission. This fully meets the core requirement of fine-tuning the nozzle 7 angle. The motor 11 is a servo motor with a built-in encoder (resolution ≥ 1024 lines). The angle control accuracy can reach ±0.1°. Combined with the low clearance of the gear transmission, the final angle positioning error of the nozzle 7 is ≤ ±0.5°, which meets the requirement of accurately covering the designated area.

[0031] The specific angle adjustment process is as follows: by starting the motor 11, the driving gear 12 is driven to rotate, which in turn drives the driven gear 10 to rotate. The driven gear 10 drives the connecting block 8 to rotate through the rotating shaft 9, thus achieving the angle adjustment of the nozzle 7. This allows for precise coverage of designated areas (such as crop roots), meeting the needs for prevention and control of root diseases (such as wilt and root-knot nematodes), solving the dead angle of coverage at fixed angles, and avoiding the waste of droplet diffusion caused by ineffective spraying of the nozzle 7.

[0032] Reference Figure 2 The bottom of the UAV body 1 is fixedly connected to a protective cover 15 with a cavity structure, and the drive gear 12 and the driven gear 10 are located inside the protective cover 15.

[0033] The one-piece molded closed cavity (made of ABS engineering plastic) is used, with only the motor shaft and the rotating shaft 9 reserved for the through holes, and no extra gaps. The structure prevents dust from entering the protective cover 15, preventing dust from affecting the gear set and avoiding gear jamming from the root.

[0034] Reference Figure 1 The top of the drone body 1 is connected to a liquid inlet pipe 5, and a sealing cap 6 can be detachably installed on the top of the liquid inlet pipe 5.

[0035] The liquid inlet pipe 5 is the medicine filling channel: it serves as the connection interface between the medicine storage tank 2 and the external filling tools (funnel, medicine barrel), providing a stable filling channel and preventing the medicine from being directly backflowed and causing spillage;

[0036] The function of the sealing cap 6 is to seal and prevent leakage: the sealing cap 6 seals the liquid inlet pipe 5 through a double sealing ring and threaded connection, preventing the liquid in the medicine tank 2 from leaking when the drone is flying bumpy or tilted, and protecting the electrical components of the aircraft.

[0037] Reference Figure 4 The drone body 1 has an insertion port 101. The medicine storage box 2 is inserted into the insertion port 101. Multiple base blocks 13 are fixedly connected to the top of the drone body 1. The base blocks 13 are arranged in two rows and distributed on the front and rear sides of the insertion port 101. Each base block 13 is threaded with a bolt 14. When the medicine storage box 2 is fixed, the bolt 14 abuts against the side wall of the medicine storage box 2.

[0038] When installing the medicine storage box 2, insert the medicine storage box 2 into the socket 101 to achieve the initial positioning purpose. Then, rotate the bolt 14 so that the end of the bolt 14 abuts against the side wall of the medicine storage box 2 to achieve the locking purpose. The medicine storage box 2 has strong vibration resistance, and the medicine storage box 2 does not shake or loosen when the drone is flying. When disassembling, loosen the bolt 14 in the opposite direction, lift the medicine storage box 2 upwards, and quickly remove it. The operation is efficient and adaptable to the needs of drone cleaning box operation.

[0039] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A drone for precision pesticide application to crops, characterized in that: The device includes a drone body (1) and a medicine storage tank (2) detachably mounted on the drone body (1). A pump body (3) is installed at the bottom of the medicine storage tank (2). A hose (4) is fixedly connected to the water outlet end of the pump body (3). A nozzle (7) is fixedly connected to the other end of the hose (4). The nozzle (7) is rotatably mounted on the bottom of the drone body (1) via a rotating assembly. The nozzle (7) has multiple spray holes (701) on its surface. The nozzle (7) is in the shape of an inverted T. The spray holes (701) are evenly distributed on the bottom of the nozzle (7).

2. The unmanned aerial vehicle for precision crop spraying according to claim 1, characterized in that: The rotating assembly includes a U-shaped block (16) fixedly connected to the bottom of the UAV body (1). A horizontally placed rotating shaft (9) is inserted inside the U-shaped block (16). A connecting block (8) is fixedly connected to the rotating shaft (9). The bottom of the connecting block (8) is fixedly connected to the nozzle (7).

3. The unmanned aerial vehicle for precision crop spraying according to claim 2, characterized in that: One end of the rotating shaft (9) is fixedly connected to a driven gear (10), and a motor (11) is fixedly installed at the bottom of the UAV body (1). The output end of the motor (11) is fixedly connected to a driving gear (12). The driving gear (12) meshes with the driven gear (10), and the pitch circle diameter of the driving gear (12) is smaller than that of the driven gear (10).

4. The unmanned aerial vehicle for precision crop spraying according to claim 3, characterized in that: The bottom of the UAV body (1) is fixedly connected to a protective cover (15) with a cavity structure, and the driving gear (12) and driven gear (10) are located inside the protective cover (15).

5. The unmanned aerial vehicle for precision pesticide application of crops according to claim 1, characterized in that: The top of the drone body (1) is connected to a liquid inlet pipe (5), and a sealing cap (6) is detachably installed on the top of the liquid inlet pipe (5).

6. The unmanned aerial vehicle for precision crop spraying according to claim 1, characterized in that: The drone body (1) has an insertion port (101) and the medicine storage box (2) is inserted into the insertion port (101). The top of the drone body (1) is fixedly connected to multiple base blocks (13). The base blocks (13) are arranged in two rows and distributed on the front and rear sides of the insertion port (101). Each base block (13) is threaded with a bolt (14). When the medicine storage box (2) is fixed, the bolt (14) abuts against the side wall of the medicine storage box (2).

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