Unmanned aerial vehicle liquid medicine spraying mechanism suitable for strip-shaped composite planting mode

Abstract

The invention discloses an unmanned aerial vehicle pesticide liquid spraying mechanism suitable for a strip-shaped composite planting mode and belongs to plant protection operation machinery. A telescopic hollow electric push rod with a spray head is fixedly installed on a rotor assembly, a seat plate is installed on the lower portion of a storage battery through a hanging frame, an electric drive gear pump assembly and a liquid medicine box are fixedly installed on the seat plate, a liquid conveying header pipe is connected with a manual valve on the liquid medicine box and the electric drive gear pump assembly, and a five-way pipe is installed on the electric drive gear pump assembly. A driving reel pipe shaft and a driven reel pipe shaft are installed on a liquid medicine box through a supporting plate and a bearing seat in a combined mode, a driving cylindrical gear and a driven cylindrical gear which are fixedly installed on the driving reel pipe shaft and the driven reel pipe shaft are meshed with each other, four flexible liquid conveying branch pipes are buckled and wound on the driving reel pipe shaft and the driven reel pipe shaft respectively, and the two ends of each flexible liquid conveying branch pipe are connected with a five-way pipe and a spray head respectively. The automatic controller is respectively communicated with the rotor wing assembly, the telescopic hollow electric push rod, the electric gear pump assembly and the motor through wires; the mechanism meets the requirement for liquid medicine spraying operation in a strip-shaped composite planting mode and is high in adaptability.

Description

Technical Field

[0001] The invention belongs to plant protection operation machinery, and mainly relates to an unmanned aerial vehicle type liquid medicine spraying mechanism suitable for a strip composite planting mode. Background Art

[0002] With the improvement of agricultural science and technology, the research and development and application of UAV-type liquid spraying machinery have developed rapidly, contributing to the mechanization of plant protection operations in my country. In recent years, the agronomic technology of strip composite planting mode adopted by more than two different crops has begun to be promoted and applied in various regions of my country. It has been widely valued for its many technical advantages of scientific and reasonable use of natural conditions such as land, fertilizer, sunlight, high crop yield and good quality. However, due to the shortcomings and deficiencies in structural design, the nozzles in the existing UAV liquid spraying mechanism cannot be adaptively adjusted and changed according to the height of the stems of different crops on the UAV. In particular, it cannot adapt to and meet the operation of the strip composite planting mode. Not only is the operation difficult to control, but the spraying accuracy for high or low corresponding strip planting crops is poor, the liquid drift rate is high, and the liquid loss is caused. In particular, because different crops are sprayed with different liquids, the wind field of the UAV affects the drift of the liquid, and different liquids will also cause damage to another crop. Therefore, it is very necessary to develop a UAV liquid spraying mechanism suitable for the strip planting mode. Summary of the invention

[0003] The purpose of the present invention is to address the problems existing in the above-mentioned prior art, and in combination with the actual needs of the current strip planting plant protection operation spraying, to develop a drone spraying mechanism suitable for the strip composite planting mode, so as to adapt to and meet the needs of strip planting flight spraying, simple and convenient control and adjustment, strong applicability, reduce the influence of the drone wind field on the floating of the liquid medicine, accurately spray the liquid medicine, and cause little damage to the liquid medicine of crops planted adjacent to the strip.

[0004] The purpose of the invention is achieved in this way: telescopic hollow electric push rods are respectively fixed on the lower ends of the four rotor assemblies, the nozzle seal is installed on the bottom end of the telescopic hollow electric push rod, a support rod is installed on the outside of the telescopic hollow electric push rod, a seat plate is hung and installed by a hanging rack at the lower part of the battery and located at the inner part of the four telescopic hollow electric push rods, the electric drive gear pump assembly and the liquid medicine tank are fixed on the seat plate, the manual valve is installed on the lower side of the side wall plate of the liquid medicine tank, and both ends of the infusion main pipe are fixed on the lower side of the side wall plate of the liquid medicine tank. They are respectively connected to the manual valve outlet and the electric drive gear pump assembly inlet, a five-way pipe is installed on the electric drive gear pump assembly outlet, a support plate is installed on the upper wall plate of the liquid tank, and the active reel shaft and the driven reel shaft are rotatably installed on the support plate through a bearing seat assembly in parallel with each other, two spiral grooves are respectively arranged on the cylindrical outer surfaces of the two sides of the active reel shaft and the driven reel shaft, and the mutually meshing active cylindrical gear and the driven cylindrical gear are respectively fixed on the active reel shaft and the driven reel shaft , the automatic controller and the motor are sequentially mounted on the support plate, the motor shaft of the motor is connected to the active reel shaft, the four flexible infusion branches are respectively buckled and wound in the two spiral grooves on the active reel shaft and the driven reel shaft, the liquid inlet ends of the four flexible infusion branches are respectively fixedly connected to the four liquid outlets of the five-way pipe, and the whole is in a relaxed state, the liquid outlet ends of the four flexible infusion branches can be respectively pulled and movably supported to pass through the support rods at the corresponding positions and then inserted into the telescopic hollow electric push rod cavity, and the liquid outlet end of the flexible infusion branch is sealed and fixedly connected to the nozzle; the battery is powered by four rotor assemblies, four telescopic hollow electric push rods, the motor, the electric drive gear pump assembly and the automatic controller, the wire connects the automatic controller with the four rotor assemblies, the four telescopic hollow electric push rods, the electric drive gear pump assembly and the motor respectively, the motor drives the active reel shaft and the driven reel shaft to move synchronously with the telescopic hollow electric push rod with the same stroke, so as to form a UAV liquid spraying mechanism suitable for the strip composite planting mode.

[0005] The invention adopts a telescopic hollow electric push rod to realize the adjustment of the height of the nozzle on the UAV. Under the condition that the flight altitude does not change, it adapts to and meets the needs of spraying different liquid medicines on various crops in the strip planting mode. The liquid medicine is applied with high accuracy, the wind field of the UAV has little effect on the drift of the liquid medicine, and other crops are not damaged. The operation and use adjustment and control are simple and convenient, and the applicability is strong, which provides technical support for the promotion and application of advanced strip planting agronomic techniques. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the UAV liquid spraying mechanism suitable for strip composite planting mode;

[0007] Figure 2 yes Figure 1A two-dimensional schematic diagram of the telescopic hollow electric linear actuator in the extended state, viewed from the direction A;

[0008] Figure 3 yes Figure 1 2D schematic diagram of B direction;

[0009] Figure 4 It is a schematic diagram of the assembly structure of the active pipe reel shaft and the driven pipe reel shaft;

[0010] Figure 5 It is a schematic diagram of the five-way pipe structure.

[0011] Description of part numbers in the figure:

[0012] 1. seat plate, 2. electric drive gear pump assembly, 3. manual valve, 4. nozzle, 5. automatic controller, 6. motor, 7. support rod, 8. support plate, 9. flexible infusion branch pipe, 10. rotor assembly, 11. battery, 12. driven reel shaft, 13. bearing seat assembly, 14. hanging rack, 15. liquid medicine tank, 16. telescopic hollow electric push rod, 17. driving cylindrical gear, 18. driven cylindrical gear, 19. driving reel shaft, 20. five-way pipe, 21. infusion main pipe. DETAILED DESCRIPTION

[0013] The following is a detailed description of the implementation scheme of the invention in conjunction with the accompanying drawings. A drone liquid medicine spraying mechanism suitable for a strip composite planting pattern includes a drone consisting of a battery 11 and four rotor assemblies 10, wherein the four rotor assemblies 10 are evenly distributed along the circumferential direction and fixed on the outside of the battery 11, and telescopic hollow electric push rods 16 are respectively fixed on the lower ends of the four rotor assemblies 10, and the spray head 4 is sealed and installed on the bottom end of the telescopic hollow electric push rod 16, and a support rod 7 is installed on the outside of the telescopic hollow electric push rod 16, and a suspension bracket 14 is used to hang the spray head 4 on the lower part of the battery 11 and on the inner part of the four telescopic hollow electric push rods 16. The seat plate 1 is installed, the electric gear pump assembly 2 and the liquid medicine tank 15 are fixedly installed on the seat plate 1, the manual valve 3 is installed on the lower side of the side wall plate of the liquid medicine tank 15, the two ends of the infusion main pipe 21 are respectively connected to the liquid outlet of the manual valve 3 and the liquid inlet of the electric gear pump assembly 2, a five-way pipe 20 is installed on the liquid outlet of the electric gear pump assembly 2, a support plate 8 is installed on the upper wall plate of the liquid medicine tank 15, and an active reel shaft 19 and a driven reel shaft 12 are rotatably installed on the support plate 8 through a bearing seat assembly 13, and on the outer surfaces of the cylinders on both sides of the active reel shaft 19 and the driven reel shaft 12, respectively Two spiral grooves are provided, and the mutually meshing driving cylindrical gear 17 and the driven cylindrical gear 18 are respectively fixedly mounted on the driving reel shaft 19 and the driven reel shaft 12, the automatic controller 5 and the motor 6 are sequentially mounted on the support plate 8, the motor shaft of the motor 6 is connected to the driving reel shaft 19, the four flexible infusion branch pipes 9 are respectively buckled and wound in the two spiral grooves on the driving reel shaft 19 and the driven reel shaft 12, the liquid inlet ends of the four flexible infusion branch pipes 9 are respectively fixedly connected to the four liquid outlet ports of the five-way pipe 20, and the whole is in a relaxed state, and the liquid outlet ends of the four flexible infusion branch pipes 9 can be pulled and moved to the ground branch respectively. The support rod 7 passes through the corresponding position and is arranged on the telescopic hollow electric push rod 16. The liquid outlet end of the flexible infusion branch tube 9 is sealed and fixedly connected to the nozzle 4; the battery 11 supplies power to the four rotor assemblies 10, the four telescopic hollow electric push rods 16, the motor 6, the electric drive gear pump assembly 2 and the automatic controller. The wires connect the automatic controller 5 with the four rotor assemblies 10, the four telescopic hollow electric push rods 16, the electric drive gear pump assembly 2 and the motor 6 respectively. The motor 6 drives the active reel shaft 19 and the driven reel shaft 12 to move synchronously with the telescopic hollow electric push rod 16 with the same stroke.

[0014] When in operation, the automatic controller 5 is used to start the rotation of the rotor assembly 10 using the battery 11, so that the UAV flies over the field in the strip composite planting mode. At the same time, the battery 11 drives the electric drive gear pump assembly 2 to rotate through the automatic controller 5, and the liquid in the liquid tank 15 is sprayed on the field crops through the opened manual valve 3, the infusion main pipe 21, the electric drive gear pump assembly 2, the five-way pipe 20, and the four flexible infusion branches 9 through the nozzles 4 installed on the telescopic hollow electric push rods 16 on the lower side of the four rotor assemblies 10, thereby completing the liquid spraying operation.

[0015] According to the height of the crops in the strip-shaped composite planting, the height of the nozzle 4 on the drone can be adjusted: the motor 6 is driven to rotate by the automatic controller 5 and the battery 11, and the rotating motor 6 drives the active reel shaft 19 to rotate synchronously, and the driven reel shaft 12 is driven by the active cylindrical gear 17 and the driven cylindrical gear 18 to rotate in the opposite direction of the active reel shaft 19. At the same time, the automatic controller 5 uses the battery 11 to start the telescopic hollow electric push rod 16 to extend or retract, thereby lowering or raising the height of the nozzle 4 on the drone. At the same time, under the drive of the active reel shaft 19 and the driven reel shaft 12, the four flexible infusion branches 9 cooperate with the nozzle 4 to synchronously complete the coordinated movement of releasing or retracting, thereby realizing and completing the spraying operation of the strip-shaped composite planting crops.

Claims

1. A drone liquid medicine spraying mechanism suitable for a strip composite planting mode, comprising a drone consisting of a storage battery (11) and four rotor assemblies (10), wherein the four rotor assemblies (10) are evenly distributed along the circumferential direction and fixed on the outside of the storage battery (11), characterized in that: A telescopic hollow electric push rod (16) is fixedly mounted on the lower end of each of the four rotor assemblies (10), a nozzle (4) is sealed and mounted on the lower end of the telescopic hollow electric push rod (16), a support rod (7) is mounted on the outside of the telescopic hollow electric push rod (16), a seat plate (1) is suspended and mounted via a suspension frame (14) at a location below the battery (11) and located inside the four telescopic hollow electric push rods (16), an electric drive gear pump assembly (2) and a liquid medicine tank (15) are fixedly mounted on the seat plate (1), a manual valve (3) is mounted on the lower side of a side wall of the liquid medicine tank (15), and both ends of the infusion main pipe (21) are connected to the liquid medicine tank (15). The liquid outlet of the manual valve (3) and the liquid inlet of the electric gear pump assembly (2) are respectively fixedly connected, a five-way pipe (20) is installed on the liquid outlet of the electric gear pump assembly (2), a support plate (8) is installed on the upper wall plate of the liquid medicine tank (15), and a driving pipe reel shaft (19) and a driven pipe reel shaft (12) are rotatably installed on the support plate (8) through a bearing seat assembly (13) in parallel with each other, two spiral grooves are respectively provided on the cylindrical outer surfaces of the two side parts of the driving pipe reel shaft (19) and the driven pipe reel shaft (12), and the mutually meshing driving cylindrical gear (17) and the driven cylindrical gear (18) are respectively fixedly mounted on the driving pipe reel shaft (19). The invention relates to a hydraulic control device for controlling a liquid infusion of a liquid infusion apparatus and a driven reel shaft (19). The hydraulic control device (5) and the driven reel shaft (12) are mounted on the support plate (8) in sequence. The motor shaft of the motor (6) is connected to the active reel shaft (19). Four flexible infusion branches (9) are respectively buckled and wound in two spiral grooves on the active reel shaft (19) and the driven reel shaft (12). The liquid inlet ends of the four flexible infusion branches (9) are respectively fixedly connected to four liquid outlet ports of a five-way pipe (20) and are in a loose state as a whole. The liquid outlet ends of the four flexible infusion branches (9) are respectively supported by support rods (7) passing through corresponding positions in a pull-out manner and are arranged on a telescopic hollow electric push rod. (16), the liquid outlet end of the flexible infusion branch pipe (9) is sealed and fixedly connected to the nozzle (4); the storage battery (11) supplies power to the four rotor assemblies (10), the four telescopic hollow electric push rods (16), the motor (6), the electric drive gear pump assembly (2) and the automatic controller (5); the wires connect the automatic controller (5) to the four rotor assemblies (10), the four telescopic hollow electric push rods (16), the electric drive gear pump assembly (2) and the motor (6), respectively; the motor (6) drives the active reel shaft (19) and the driven reel shaft (12) to move synchronously with the telescopic hollow electric push rods (16) in the same stroke.

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