Unmanned aerial vehicle pesticide spraying device with adjustable nozzle angle

Abstract

The utility model provides an unmanned aerial vehicle pesticide spraying device with an adjustable nozzle angle, and relates to the technical field of unmanned aerial vehicle pesticide spraying, the unmanned aerial vehicle pesticide spraying device comprises a fixing frame used for being fixed on an unmanned aerial vehicle, the bottom of the fixing frame is provided with an L-shaped pipe, and a downward port of the L-shaped pipe is movably provided with a connecting pipe which is coaxially arranged; the two supporting frames are symmetrically and fixedly installed on the pipe wall of the outer side of the connecting pipe, and the gear, the connecting frame, the spray heads and the hose are symmetrically arranged relative to the connecting pipe, so that counter-acting force generated when the two spray heads spray out can counteract mutually, and the flight stability of the unmanned aerial vehicle cannot be affected; in addition, symmetrical gears, hoses and nozzles can guarantee balance and stability of the whole device, and stable flight of the unmanned aerial vehicle is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of drone pesticide spraying technology, and in particular to a drone pesticide spraying device with an adjustable nozzle angle. Background Technology

[0002] Drone pesticide spraying refers to using a drone to carry a pesticide tank and spraying the pesticide from the tank using a pump and nozzles. For ease of operation, a drone spraying device with an adjustable nozzle angle is needed to expand the spraying range when the drone is hovering.

[0003] For example, an existing adjustable spray angle drone agricultural nozzle, publication number CN218354274U, guides water from the drone's water tank to the nozzle via a guide pipe. The water flow in the guide pipe reaches the connecting pipe through the main pipe, and then a servo motor drives a transmission screw to rotate. The transmission screw, through a thread, moves a closing plate to the bottom, achieving the function of an opening and closing device. When the closing plate is raised, the connecting pipe connects the first and second conduits, allowing water to flow to both sides simultaneously. When the closing plate is lowered, the water flow can only flow towards the second conduit, closing the direction of the first conduit. Due to the weight difference of the water, the elastic metal ring on one side of the second conduit stretches, and the plate on one side of the second conduit falls, thereby adjusting the spray angle of the nozzle.

[0004] However, due to the weight difference of the water, the elastic metal ring on one side of the second conduit stretches, and the plate on one side of the second conduit falls down. This can only cause the nozzles that work with the second conduit to swing down. Moreover, due to the weight of the water, the center of gravity of the drone will shift, which may affect the stability of the drone. Utility Model Content

[0005] The purpose of this invention is to solve the problems existing in the prior art by proposing a drone pesticide spraying device with an adjustable nozzle angle.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A drone pesticide spraying device with adjustable nozzle angle has a gear rotatably connected in any of the support frames. A connecting frame is fixedly installed on the end face of the gear. The connecting frame swings in the vertical direction and a nozzle is fixedly installed in the connecting frame. A hose is installed at the water inlet end of the nozzle. Two hoses are set with equal length and weight, and the other ends of the two hoses are symmetrically fixedly installed through the bottom of the connecting pipe.

[0008] Preferably, a rack that meshes with a gear is inserted into the support frame, and two racks are symmetrically arranged about the connecting pipe, with a lifting frame sleeved on the connecting pipe fixed between the top edges of the two racks.

[0009] Preferably, an electric push rod powered by a mobile power supply and used to drive the lifting frame to rise and fall is fixedly installed on one side of the outer wall of the connecting pipe, and a counterweight is provided on the side of the outer wall of the connecting pipe away from the electric push rod.

[0010] Preferably, the counterweight on the connecting pipe is set to the same weight as the electric push rod.

[0011] Preferably, a rotary joint is installed between the bottom end of the L-shaped tube and the top end of the connecting tube, with one end of the rotary joint connected to the L-shaped tube and the other end connected to the top end of the connecting tube.

[0012] Preferably, a motor is fixedly installed on the outer side of one end of the rotary joint, a spur gear is installed on the output shaft of the motor, and a gear ring that meshes with the spur gear is installed on the outer side wall of the other end of the rotary joint.

[0013] Preferably, a counterweight is also provided on the outer side of one end of the rotary joint. The counterweight on the rotary joint is symmetrically distributed with the motor, and the weight of the counterweight on the rotary joint is equal to the weight of the motor and the spur gear.

[0014] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0015] 1. In this utility model, the gears, connecting frame, nozzles and hoses are symmetrically arranged about the connecting pipe. Therefore, the reaction forces generated when the two nozzles spray out will cancel each other out, which will not affect the stability of the drone's flight. In addition, the symmetrical arrangement of the gears, hoses and nozzles can ensure the balance and stability of the entire device, thus ensuring the stability of the drone's flight.

[0016] 2. In this utility model, when the drone is hovering, as the nozzle swings up and down, the spur gear driven by the motor rotates, which in turn drives the meshing gear ring to rotate the lower part of the rotary joint connected to it, thereby rotating the connecting pipe connected to the lower part of the rotary joint. This causes the up-and-down swinging nozzle to rotate around the drone, expanding the coverage area of ​​the pesticide sprayed by the nozzle. Attached Figure Description

[0017] Figure 1 A three-dimensional structural diagram of a drone pesticide spraying device with an adjustable nozzle angle is provided for this utility model.

[0018] Figure 2 This invention proposes a drone pesticide spraying device with an adjustable nozzle angle. Figure 1 A schematic diagram of the rear view structure;

[0019] Figure 3 This invention proposes a drone pesticide spraying device with an adjustable nozzle angle. Figure 2 A schematic diagram of the side view structure;

[0020] Figure 4 for Figure 2 Enlarged view of point A in the middle.

[0021] Legend: 1. Connecting pipe; 2. Hose; 3. Rack; 4. Support frame; 5. Nozzle; 6. Gear; 7. Counterweight; 8. Lifting frame; 9. Fixing frame; 10. Rotary joint; 11. Gear ring; 12. Connecting frame; 13. Electric push rod; 14. Motor; 15. Spur gear; 16. L-shaped pipe. Detailed Implementation

[0022] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0023] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0024] like Figures 1-4 As shown,

[0025] A drone pesticide spraying device with an adjustable nozzle angle includes a mounting bracket 9 for fixing to the drone. An L-shaped pipe 16 is installed at the bottom of the mounting bracket 9, and the L-shaped pipe 16 is connected to the outlet of a pesticide pump. The pesticide pump draws the prepared pesticide into the L-shaped pipe 16. A coaxial connecting pipe 1 is movably installed at the downward-facing end of the L-shaped pipe 16. Two support frames 4 are symmetrically fixedly installed on the outer wall of the connecting pipe 1. A gear 6 is rotatably connected inside each support frame 4. A connecting frame 12 is fixedly installed on the end face of the gear 6. The connecting frame 12 swings vertically, and a nozzle 5 is fixedly installed inside the connecting frame 12. A hose 2 is installed at the water inlet end of the nozzle 5. Two hoses 2 are set to be of equal length and weight, and the other ends of the two hoses 2 are symmetrically fixed to the bottom of the connecting pipe 1. The medicine drawn into the L-shaped tube 16 is sprayed out along the connecting pipe 1 and the two hoses 2 respectively through the two nozzles 5. The nozzles 5 inside the connecting frame 12 swing up and down under the action of the drive gear 6, so that the angle of the nozzles 5 can be adjusted. The two nozzles 5 are set symmetrically, so the reaction force generated when the two nozzles 5 spray out will cancel each other out, that is, it will not affect the stability of the drone flight. In addition, the symmetrically set gear 6, hoses 2 and nozzles 5 can ensure the balance and stability of the entire device.

[0026] To drive the gear 6 to rotate: a rack 3 that meshes with the gear 6 is inserted into the support frame 4. Two racks 3 are symmetrically arranged about the connecting pipe 1, and a lifting frame 8 is fixedly installed between the top edges of the two racks 3 and sleeved on the connecting pipe 1. An electric push rod 13 powered by a mobile power supply and used to drive the lifting frame 8 to rise and fall is fixedly installed on one side of the outer wall of the connecting pipe 1. A counterweight 7 is provided on the side of the outer wall of the connecting pipe 1 away from the electric push rod 13. The lifting frame 8 can be raised and lowered by extending and retracting the electric push rod 13, thereby realizing the synchronous rise and fall of the two racks 3 connected to the lifting frame 8, which can realize the rotation of the gear 6 that meshes with the racks 3. The counterweight 7 can also provide support on the other side of the connecting pipe 1 to prevent the weight of the two sides of the connecting pipe 1 from becoming unbalanced.

[0027] To ensure weight balance, the counterweight 7 on the connecting pipe 1 is set to be of equal weight to the electric push rod 13.

[0028] To facilitate expanding the coverage area of ​​the nozzle 5 in a hovering state: a rotary joint 10 is installed between the bottom end of the L-shaped tube 16 and the top end of the connecting tube 1. One end of the rotary joint 10 is connected to the L-shaped tube 16, and the other end is connected to the top end of the connecting tube 1. A motor 14 is fixedly installed on the outer side of one end of the rotary joint 10, and a spur gear 15 is installed on the output shaft of the motor 14. A gear ring 11 that meshes with the spur gear 15 is installed on the outer wall of the other end of the rotary joint 10. A counterweight 7 is also provided on the outer side of one end of the rotary joint 10. The counterweights 7 on the rotary joint 10 are symmetrically distributed with the motor 14 and rotate. The weight of the counterweight 7 on the connector 10 is equal to the combined weight of the motor 14 and the spur gear 15. The rotary connector 10 ensures that the connecting pipe 1 can rotate relative to the L-shaped pipe 16. Therefore, when the drone is hovering, as the nozzle 5 swings up and down, the motor 14 drives the spur gear 15 to rotate, which in turn drives the meshing gear ring 11 to rotate the lower part of the rotary connector 10 connected to it. This, in turn, causes the connecting pipe 1 connected to the lower part of the rotary connector 10 to rotate, thereby driving the up-and-down swinging nozzle 5 to rotate around the drone and expand the coverage area of ​​the pesticide sprayed by the nozzle 5.

[0029] The working principle is as follows: the mounting bracket 9 is fixed to the drone with bolts. The L-shaped pipe 16 is connected to the outlet of the pesticide pump. The drone moves using a carrying device. During the movement, the pesticide drawn into the L-shaped pipe 16 is sprayed out along the connecting pipe 1 and the two hoses 2, respectively, through the two nozzles 5. The lifting frame 8 is raised and lowered by the extension and retraction of the electric push rod 13, and the two racks 3 are raised and lowered synchronously. The gear 6, which is meshed with the racks 3, rotates. Under the action of the connecting frame 12, the nozzles 5 inside the connecting frame 12 swing up and down. The spur gear 15 is driven to rotate by the motor 14, and the meshing gear ring 11 drives the lower part of the rotary joint 10 connected to it to rotate. This causes the connecting pipe 1, which is connected to the lower part of the rotary joint 10, to rotate, thereby causing the up-and-down swinging nozzles 5 to rotate around the drone, expanding the coverage area of ​​the pesticide sprayed by the nozzles 5.

[0030] The wiring diagrams for the motor 14 and electric actuator 13 in this utility model are common knowledge in the field, and their working principles are well-known technologies. The appropriate model is selected based on actual use; therefore, the control methods and wiring arrangements for the motor 14 and electric actuator 13 will not be explained in detail. The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any other way. Any person skilled in the art may use the disclosed technical content to make changes or modifications to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model, without departing from the scope of the utility model's technical solution, shall still fall within the protection scope of this utility model's technical solution.

Claims

1. A drone pesticide spraying device with an adjustable nozzle angle, comprising a mounting bracket (9) for fixing to the drone, characterized in that: The bottom of the fixed frame (9) is equipped with an L-shaped tube (16), and the downward-facing end of the L-shaped tube (16) is movably equipped with a coaxially arranged connecting tube (1). Two support frames (4) are symmetrically fixedly installed on the outer wall of the connecting tube (1). A gear (6) is rotatably connected inside each of the support frames (4). A connecting frame (12) is fixedly installed on the end face of the gear (6). The connecting frame (12) swings vertically and a nozzle (5) is fixedly installed inside the connecting frame (12). A hose (2) is installed at the water inlet end of the nozzle (5). The two hoses (2) are set with equal length and weight, and the other ends of the two hoses (2) are symmetrically fixedly installed through the bottom of the connecting tube (1).

2. The drone pesticide spraying device with adjustable nozzle angle according to claim 1, characterized in that: The support frame (4) is fitted with a rack (3) that meshes with the gear (6). The two racks (3) are symmetrically arranged about the connecting pipe (1), and a lifting frame (8) is fixedly installed between the top edges of the two racks (3) on the connecting pipe (1).

3. The drone pesticide spraying device with adjustable nozzle angle according to claim 2, characterized in that: An electric push rod (13) powered by a mobile power supply and used to drive the lifting frame (8) to rise and fall is fixedly installed on one side of the outer wall of the connecting pipe (1). A counterweight (7) is provided on the side of the outer wall of the connecting pipe (1) away from the electric push rod (13).

4. The drone pesticide spraying device with adjustable nozzle angle according to claim 3, characterized in that: The counterweight (7) on the connecting pipe (1) is set to the same weight as the electric push rod (13).

5. The drone pesticide spraying device with adjustable nozzle angle according to claim 1, characterized in that: A rotary joint (10) is installed between the bottom end of the L-shaped tube (16) and the top end of the connecting tube (1). One end of the rotary joint (10) is connected to the L-shaped tube (16), and the other end is connected to the top end of the connecting tube (1).

6. The drone pesticide spraying device with adjustable nozzle angle according to claim 5, characterized in that: A motor (14) is fixedly installed on the outer side of one end of the rotary joint (10), and a spur gear (15) is installed on the output shaft of the motor (14). A gear ring (11) that meshes with the spur gear (15) is installed on the outer side wall of the other end of the rotary joint (10).

7. The drone pesticide spraying device with adjustable nozzle angle according to claim 6, characterized in that: A counterweight (7) is also provided on the outer side of one end of the rotary joint (10). The counterweight (7) on the rotary joint (10) is symmetrically distributed with the motor (14), and the weight of the counterweight (7) on the rotary joint (10) is equal to the weight of the motor (14) and the spur gear (15).

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