Adjustable multi-rotor drone pesticide spraying device

Abstract

This utility model discloses an adjustable multi-rotor drone pesticide spraying device, belonging to the technical field of drone pesticide application equipment. The device includes a fuselage, frame, wings, support frame, pesticide storage tank, horizontal plate, extension mechanism, adjustable spray nozzles, and pesticide delivery system. Two pesticide storage tanks are placed in the support frame at the front and rear ends of the fuselage. The extension mechanism is symmetrically installed on the horizontal plate. The extension plate of the extension mechanism can be extended and retracted by an electric push rod. The extension plate and the fuselage form a triangular support structure through diagonal braces. The adjustable spray nozzles at the lower end of the extension plate can be adjusted in position and number by a cross slide and in angle by a hinge ball. The pesticide delivery system delivers pesticide from the pesticide storage tank to the spray nozzles through a pump and pipeline. This utility model can flexibly adjust the spray width, nozzle position and angle, increase the pesticide storage capacity, improve application efficiency and pesticide coverage uniformity, and has strong stability, making it suitable for pesticide application operations in different scenarios.

Description

Technical Field

[0001] This utility model relates to the field of drone spraying equipment, and more particularly to an adjustable multi-rotor drone pesticide spraying device. Background Technology

[0002] Multi-rotor drones have been widely used in agricultural production for plant protection, but existing drone spraying devices suffer from problems such as being fixed and lacking versatility, making them difficult to adapt to complex agricultural scenarios. Firstly, the length of the spray boom is fixed and cannot be adjusted according to crop row spacing, tree canopy size or terrain. Crops with narrow row spacing are prone to over-spraying, while crops with wide row spacing are prone to under-spraying, resulting in pesticide waste and affecting the control effect. Moreover, the fixed nozzle spacing cannot be optimized and adjusted according to flight speed and spray width, resulting in uneven pesticide coverage. Secondly, with the nozzle pointing downwards, the pesticide solution has difficulty penetrating the dense crop canopy, resulting in poor coverage of the middle and lower leaves and stems. To address the aforementioned issues, this utility model provides an adjustable multi-rotor drone pesticide spraying device. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this utility model provides an adjustable multi-rotor drone pesticide spraying device, which solves the problems mentioned in the background.

[0004] To achieve the above objectives, this utility model is implemented through the following technical solution: an adjustable multi-rotor drone pesticide spraying device, including a fuselage and a frame mounted on the fuselage. Multiple wings are arrayed at the four corners of the fuselage. A horizontal plate is integrally connected to the inner side of the frame at the front side of the fuselage. Support frames are welded to the front and rear ends of the fuselage. Storage tanks for placing pesticide storage tanks are formed on the inner sides of the two support frames. Two extension mechanisms are symmetrically installed on the lower front end of the machine body on the horizontal plate. Each extension mechanism has multiple adjustable spray nozzles at its lower end. The horizontal plate is also equipped with a liquid delivery system that is connected to the adjustable application nozzle for delivering liquid medicine to it.

[0005] As a further technical solution of this utility model, the extension mechanism includes an electric push rod installed on the horizontal plate, the telescopic end of the electric push rod is connected to an extension plate, guide seats are symmetrically installed at both ends of the upper surface of the horizontal plate, the extension plate slides in the guide seats, and the windward surfaces of the extension plate and the horizontal plate are both arc surfaces. A cross groove is provided on the upper surface of the extension plate near the guide seat, and a cross slide block is slidably connected inside the cross groove. A diagonal brace is fixedly connected to the cross slide block, and the other end of the diagonal brace is fixed to the outer wall of the machine body. When the electric push rod pushes the extension plate to slide and extend within the guide seat, the cross slide block slides and is limited within the cross groove. The lower surface of the extension plate, away from the guide seat, has a cross-shaped sliding groove.

[0006] As a further technical solution of this utility model, the adjustable spray nozzle includes a cross slide seat two that slides in a cross slide groove two, a ball seat fixed on the lower surface of the cross slide seat two, a hinged ball movably connected to the lower surface of the ball seat, and a spray nozzle fixedly connected to the bottom of the hinged ball. The lower surface of the cross slide block two is also provided with an internal threaded hole, and a wing screw is connected in the internal threaded hole. The cross slide block two slides in the cross slide groove two, and the wing screw is screwed into the internal threaded hole and pressed against the inner wall of the cross slide groove two for fixation.

[0007] As a further technical solution of this utility model, a butterfly screw is threaded through the outer surface of the ball seat, one end of the butterfly screw is screwed into the ball seat and pressed against the surface of the hinge ball, and a pipe connector is also provided at the rear end of the spray nozzle.

[0008] As a further technical solution of this utility model, the liquid delivery system includes a liquid pump installed on a horizontal plate. The liquid pump has a liquid pumping end connected to a liquid pumping pipe and a liquid delivery end connected to a liquid outlet pipe. An electrically controlled pressure regulating valve is installed on the liquid outlet pipe, and one end of the liquid outlet pipe is connected to two branch pipes through a three-way pipe.

[0009] As a further technical solution of this utility model, the upper end of the medicine storage tank is provided with a medicine addition port and a handle, and the bottom end of the medicine storage tank is provided with a liquid outlet. The liquid extraction pipe is also branched into two connecting pipes, which are connected to the liquid outlets at the bottom of the two medicine storage tanks respectively through a connector and a hose.

[0010] As a further technical solution of this utility model, the liquid delivery system also includes a delivery pipe installed on the rear side of the two extension plates. The lower surface of the delivery pipe has multiple pipe connectors 1 evenly distributed. Each pipe connector 2 on the adjustable application nozzle is connected to the corresponding pipe connector 1 through a connecting hose.

[0011] As a further technical solution of this utility model, each of the two drug delivery tubes is provided with a connector at one end, and both drug delivery tubes are connected to the two branch tubes through the connector and the connecting hose.

[0012] As a further technical solution of this utility model, it also includes a central control system installed on the machine body, wherein the controller is communicatively connected to the electric push rod and the electric pressure regulating valve.

[0013] This utility model provides an adjustable multi-rotor drone pesticide spraying device, which has the following advantages compared with the prior art: 1. The adjustable multi-rotor drone pesticide spraying device designed in this paper has an extension mechanism that drives the extension plate to extend and retract via an electric push rod, which can flexibly adjust the spray range to adapt to the pesticide application needs of farmland of different areas. Furthermore, the extension plate and the fuselage form a triangular structure through diagonal braces and cross slides, which significantly improves the stability of the extension plate after extension and the stability of the spray nozzle. In addition, by setting two pesticide storage tanks, the amount of pesticide solution is increased, the number of times pesticide is added during the application process is reduced, and the application efficiency is improved.

[0014] 2. The adjustable multi-rotor drone pesticide spraying device designed in this paper has an adjustable spray nozzle that slides within a cross groove via a cross slide seat. The position and number of nozzles can be freely adjusted to optimize the nozzle spacing and layout. Combined with the cooperation of the articulated ball and ball seat, the nozzles can be manually adjusted to any angle such as forward tilt, backward tilt, or side tilt to ensure uniform coverage of the pesticide solution within the spray width. This allows the pesticide solution to be evenly deposited and effectively penetrate the crop canopy, avoiding missed spraying and over-spraying, and improving the control effect.

[0015] 3. The adjustable multi-rotor drone pesticide spraying device designed in this paper is equipped with an electronically controlled pressure regulating valve in the pesticide delivery system. The liquid delivery pressure can be adjusted according to the pesticide application requirements. Combined with the adjustable nozzle status, it can accurately match the droplet size, flow rate, spray width and spray angle, reduce pesticide waste and environmental pollution, and further improve the application effect. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of an adjustable multi-rotor drone pesticide spraying device. Figure 2 A front view of an adjustable multi-rotor drone pesticide spraying device; Figure 3 This is a schematic diagram of the extension mechanism in an adjustable multi-rotor drone pesticide spraying device. Figure 4 This is a schematic diagram of the pesticide liquid delivery system in an adjustable multi-rotor drone pesticide spraying device. Figure 5 This is a schematic diagram showing the installation of the adjustable spray nozzle in an adjustable multi-rotor drone pesticide spraying device. Figure 6 This is a schematic diagram of the adjustable spray nozzle in an adjustable multi-rotor drone pesticide spraying device.

[0017] In the diagram: 1. Fuselage; 11. Frame; 12. Support frame; 13. Wing; 14. Horizontal plate; 2. Extension mechanism; 21. Electric push rod; 22. Guide seat; 23. Extension plate; 24. Cross slide one; 25. Diagonal brace; 26. Cross slide one; 27. Cross slide two; 3. Drug storage tank; 4. Adjustable application nozzle; 41. Cross slide two; 42. Butterfly screw one; 43. Ball seat; 44. Hinge ball; 45. Butterfly screw two; 46. Application nozzle; 5. Liquid delivery system; 51. Liquid pump; 52. Discharge pipe; 53. Electrically controlled pressure regulating valve; 54. Liquid extraction pipe; 55. Branch pipe; 56. Drug delivery pipe; 57. Pipe joint one; 58. Pipe joint two. Detailed Implementation

[0018] 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. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0019] Please see Figure 1-6 This utility model provides a technical solution for an adjustable multi-rotor drone pesticide spraying device: The adjustable multi-rotor drone pesticide spraying device includes a fuselage 1 and a frame 11 mounted on the fuselage 1. Multiple wings 13 are arrayed at the four corners of the fuselage 1. A horizontal plate 14 is integrally connected to the inner side of the frame 11 at the front side of the fuselage 1. Support frames 12 are welded to the front and rear ends of the fuselage 1. Storage tanks 3 are formed on the inner side of the two support frames 12 for placing the pesticide storage tanks 3. The pesticide storage tanks 3 can be placed in the storage tanks, and after placement, the top is fixed by ropes or other means. Strengthening the fixation is sufficient to facilitate the quick loading and unloading of the storage tank 3 later. The upper end of the storage tank 3 is equipped with a dosing port and a handle, and the bottom end of the storage tank 3 is equipped with a liquid outlet. The liquid extraction pipe 54 also has two branch pipes. The two connecting pipes are connected to the liquid outlets at the bottom of the two storage tanks 3 through connectors and hoses, respectively. The purpose is to facilitate the simultaneous extraction of liquid from the two storage tanks 3 through the two connecting pipes. Moreover, the design of two storage tanks 3 can increase the liquid storage capacity, improve the application efficiency, and reduce the number of dosing times. In addition, the storage tank 3 is made of corrosion-resistant plastic material, and the volume is set according to the operation requirements. Two extension mechanisms 2 are symmetrically mounted on the lower front end of the fuselage 1 on the horizontal plate 14. Each extension mechanism 2 includes an electric push rod 21 mounted on the horizontal plate 14. The electric push rod 21 can be a DC electric push rod with adjustable stroke. An extension plate 23 is connected to the telescopic end of the electric push rod 21. Guide seats 22 are symmetrically mounted at both ends of the upper surface of the horizontal plate 14. The extension plate 23 slides within the guide seats 22. A sliding bearing is provided within the guide seats 22 to reduce friction during the sliding of the extension plate 23. The windward surfaces of both the extension plate 23 and the horizontal plate 14 are curved to reduce wind resistance. A cross groove 24 is formed on the upper surface of the extension plate 23 near the guide seat 22 (i.e., half of the upper surface). A cross groove 27 is formed on the lower surface of the extension plate 23 away from the guide seat 22 (i.e., the other half of the lower surface). Ten cross grooves 24 are slidably connected inside the cross groove 24. The cross slide 26 is fixedly connected to a diagonal brace 25. The diagonal brace 25 is made of carbon fiber, which combines strength and lightweight characteristics. The other end of the diagonal brace 25 is fixed to the outer wall of the body 1. When the electric push rod 21 pushes the extension plate 23 to slide and extend within the guide seat 22, the cross slide 26 slides and is limited within the cross groove 24. The cooperation between the diagonal brace 25 and the cross slide 26 facilitates the pulling of the extension plate 23 when it extends, so that the extension plate 23, the diagonal brace 25 and the body 1 form a triangular structure, thereby increasing the firmness of the extension plate 23 after extension and improving the stability of the spray nozzle 46. It should be noted that the groove widths of the cross groove 24 and the cross groove 27 are precisely matched with the dimensions of the cross slide 26 and the cross slide 21 to ensure smooth sliding without shaking.

[0020] Each extension mechanism 2 is equipped with multiple adjustable spray nozzles 4 at its lower end. Each adjustable spray nozzle 4 includes a cross slide seat 41 that slides in the cross slide groove 27. A ball seat 43 is fixed on the lower surface of the cross slide seat 41. A hinge ball 44 is movably connected to the lower surface of the ball seat 43. A spray nozzle 46 is fixedly connected to the bottom of the hinge ball 44. The spray nozzle 46 is an anti-clogging nozzle. The ball seat 43 and the hinge ball 44 are made of wear-resistant alloy material to ensure the flexibility of angle adjustment and service life. The lower surface of the cross slide 41 is also provided with an internal threaded hole, and a wing screw 42 is connected in the internal threaded hole. By sliding the cross slide 41 in the cross groove 27, the position of the spray nozzle 46 at any position under the extension plate 23 can be freely adjusted. This allows the user to flexibly optimize the spacing and layout of the spray nozzle 46 according to the current spray width and flight speed, ensuring uniform coverage of the liquid within the spray width. Moreover, the spray nozzle 46 can slide out of the cross groove 27, making it easy to reduce or increase its number. After the position of the spray nozzle 46 is adjusted, the wing screw 42 is screwed into the internal threaded hole and pressed against the inner wall of the cross groove 27 for fixation.

[0021] A butterfly screw 45 is threaded through the outer surface of the ball seat 43. After the angle of the spray nozzle 46 is adjusted by moving the hinge ball 44 within the ball seat 43, the butterfly screw 45 is screwed into the ball seat 43 and pressed against the surface of the hinge ball 44, thereby fixing the angle of the spray nozzle 46. This allows the spray nozzle 46 to be manually adjusted to any angle, such as forward tilt, backward tilt, or side tilt.

[0022] A pesticide delivery system 5 is also installed on the horizontal plate 14, which is connected to the adjustable spray nozzle 4 to deliver pesticide solution. The pesticide delivery system 5 includes a pump 51 installed on the horizontal plate 14. The pump 51 can be a miniature high-pressure diaphragm pump. The pump 51 has a pump pipe 54 connected to the pumping end and an outlet pipe 52 connected to the outlet end. An electronically controlled pressure regulating valve 53 is installed on the outlet pipe 52. The electronically controlled pressure regulating valve 53 is a digital pressure regulating valve, which can achieve precise pressure control. All pipelines are made of pesticide-resistant hoses, and sealing gaskets are provided at the joints to prevent pesticide leakage. One end of the outlet pipe 52 is connected to two branch pipes 55 through a T-junction. One end of each of the two delivery pipes 56 is provided with a connector, and both delivery pipes 56 are connected to the two branch pipes 55 through connectors and connecting hoses. The purpose is to extract the pesticide and deliver it into the two delivery pipes 56, thereby delivering it to each spray nozzle 46.

[0023] The rear end of the spray nozzle 46 is also provided with a pipe connector 2 58 connected to it. The liquid delivery system 5 also includes a delivery pipe 56 installed on the rear side of the two extension plates 23. Multiple pipe connectors 1 57 are evenly distributed on the lower surface of the delivery pipe 56. Each pipe connector 2 58 on the adjustable spray nozzle 4 is connected to the corresponding pipe connector 1 57 through a connecting hose. The purpose is to use the liquid delivery system 5 to deliver the pesticide from the outlet pipe 52 to the two delivery pipes 56, and then deliver it to the corresponding spray nozzle 46 through the pipe connector 1 57, and then spray it out from the spray nozzle 46 to apply the pesticide.

[0024] It also includes a central control system installed on the fuselage 1. The controller of the central control system is communicatively connected to the electric push rod 21 and the electric pressure regulating valve 53. The controller may be, but is not limited to, using a microcontroller and communicates with the UAV flight controller via a serial port. The UAV itself has a built-in remote communication function. The controller controls the opening and closing of the liquid pump 51 by receiving remote commands. The electric pressure regulating valve 53 works in coordination with the steplessly speed-regulating liquid pump 51. The speed of the liquid pump 51 and the opening degree of the electric pressure regulating valve 53 are adjusted by the controller.

[0025] The working principle of this utility model is as follows: During operation, the prepared pesticide is injected into the storage tank 3 and the storage tank 3 is fixed in the storage tank trough. Then, according to the crop row spacing and spray width requirements, the electric push rod 21 is adjusted by the controller to extend and retract, thereby pushing the extension plate 23 to extend and retract to a suitable length.

[0026] Next, based on the requirements of flight speed and coverage uniformity, adjust the position of the cross slide seat 2 41 within the cross slide groove 2 27 to determine the spacing of the spray nozzles 46, and fix them with the butterfly screw 1 42; then, based on the crop canopy morphology and the distribution of pests and diseases, adjust the angle of the spray nozzles 46, and fix them with the butterfly screw 2 45.

[0027] After the adjustment is completed, the drone is started and flew to the designated airspace. Then, the liquid pump 51 is started, and the liquid pressure is adjusted to a suitable value through the electronic pressure regulating valve 53. The pesticide is delivered to the spray nozzle 46 through the pipeline, and sprayed onto the crop surface after being atomized by the spray nozzle 46. During the flight, the controller of the central control system can adjust the spraying parameters in real time according to the flight speed to ensure the spraying effect.

[0028] 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 art.

Claims

1. An adjustable multi-rotor drone pesticide spraying device, comprising a fuselage (1) and a frame (11) mounted on the fuselage (1), wherein multiple wings (13) are arrayed at four corners of the fuselage (1), and a cross plate (14) is integrally connected to the inner side of the frame (11) at the front side of the fuselage (1), characterized in that, The body (1) is welded with a support frame (12) at both the front and rear ends, and the inner sides of the two support frames (12) form a storage tank trough for placing the medicine storage tank (3); The lower front end of the body (1) is symmetrically equipped with two extension mechanisms (2) on the horizontal plate (14). Each extension mechanism (2) has multiple adjustable spray nozzles (4) with adjustable positions at its lower end. The horizontal plate (14) is also equipped with a liquid delivery system (5) that is connected to the adjustable application nozzle (4) for delivering liquid medicine to it.

2. The adjustable multi-rotor drone pesticide spraying device according to claim 1, characterized in that, The extension mechanism (2) includes an electric push rod (21) mounted on a horizontal plate (14). The telescopic end of the electric push rod (21) is connected to an extension plate (23). Guide seats (22) are symmetrically mounted on both ends of the upper surface of the horizontal plate (14). The extension plate (23) slides in the guide seat (22). The windward surfaces of the extension plate (23) and the horizontal plate (14) are both arc surfaces. The upper surface of the extension plate (23) near the guide seat (22) has a cross groove (24), and a cross slide block (26) is slidably connected inside the cross groove (24). A diagonal brace (25) is fixedly connected to the cross slide block (26), and the other end of the diagonal brace (25) is fixed to the outer wall of the machine body (1). When the electric push rod (21) pushes the extension plate (23) to slide and extend in the guide seat (22), the cross slide block (26) slides and is limited in the cross groove (24). The lower surface of the extension plate (23) away from the guide seat (22) has a cross groove (27) on the other side.

3. The adjustable multi-rotor drone pesticide spraying device according to claim 2, characterized in that, The adjustable spray nozzle (4) includes a cross slide seat (41) that slides in a cross slide groove (27). A ball seat (43) is fixed on the lower surface of the cross slide seat (41). A hinge ball (44) is movably connected to the lower surface of the ball seat (43). A spray nozzle (46) is fixedly connected to the bottom of the hinge ball (44). The lower surface of the cross slide block two (41) is also provided with an internal threaded hole, and a wing screw one (42) is connected in the internal threaded hole. The cross slide block two (41) slides in the cross slide groove two (27), and is fixed by screwing the wing screw one (42) into the internal threaded hole and pressing it against the inner wall of the cross slide groove two (27).

4. The adjustable multi-rotor drone pesticide spraying device according to claim 3, characterized in that, The outer surface of the ball seat (43) is threaded with a butterfly screw (45). One end of the butterfly screw (45) is screwed into the ball seat (43) and pressed against the surface of the hinge ball (44). The rear end of the spray nozzle (46) is also provided with a pipe connector (58) connected to it.

5. The adjustable multi-rotor drone pesticide spraying device according to claim 4, characterized in that, The liquid delivery system (5) includes a pump (51) installed on a horizontal plate (14). The pump (51) has a pump pipe (54) connected to the pumping end and an outlet pipe (52) connected to the delivery end. An electric pressure regulating valve (53) is installed on the outlet pipe (52), and one end of the outlet pipe (52) is connected to two branch pipes (55) through a three-way pipe.

6. The adjustable multi-rotor drone pesticide spraying device according to claim 5, characterized in that, The upper end of the medicine storage tank (3) is provided with a medicine inlet and a handle, and the bottom end of the medicine storage tank (3) is provided with a liquid outlet. The liquid extraction pipe (54) is also branched into two connecting pipes, which are connected to the liquid outlets at the bottom of the two medicine storage tanks (3) through connectors and hoses respectively.

7. The adjustable multi-rotor drone pesticide spraying device according to claim 5, characterized in that, The liquid delivery system (5) also includes a delivery pipe (56) installed on the rear side of the two extension plates (23). The lower surface of the delivery pipe (56) is provided with multiple pipe connectors (57) at equal intervals. Each pipe connector (58) on the adjustable application nozzle (4) is connected to the corresponding pipe connector (57) via a connecting hose.

8. The adjustable multi-rotor drone pesticide spraying device according to claim 7, characterized in that, Both of the two drug delivery tubes (56) have a connector on one end face, and both of the drug delivery tubes (56) are connected to the two branch tubes (55) through the connector and connecting hose.

9. The adjustable multi-rotor drone pesticide spraying device according to claim 1, characterized in that, It also includes a central control system installed on the fuselage (1), the controller of which is communicatively connected to the electric push rod (21) and the electric pressure regulating valve (53).

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