Quantitative unmanned aerial vehicle spraying device for herbicide

Abstract

A herbicide quantitative unmanned aerial vehicle spraying device relates to the technical field of pesticide spraying devices and comprises a main body device, a pesticide storage mechanism and a pesticide spraying unit, and the pesticide storage mechanism and the pesticide spraying unit are arranged on the main body device and are communicated through a pipeline; the pesticide spraying unit comprises a driving mechanism, a turning mechanism in transmission connection with the driving mechanism, a rotating mechanism arranged at the lower end of the turning mechanism, an unfolding drive connected with the rotating mechanism, and a pesticide spraying mechanism in transmission connection with the unfolding drive; when the unmanned aerial vehicle needs to be transported or stored after pesticide spraying, a worm gear is driven to rotate through an unfolding drive, then a first connecting rod is driven to rotate, a pesticide spraying plate rotates, and then the pesticide spraying plate and a pesticide spraying head are folded; the driving mechanism drives the turning mechanism, the rotating mechanism and the pesticide spraying mechanism to retract into the protective sleeve, and then the device is stopped on the ground, so that an operator can conveniently change the pesticide and collect the pesticide for transportation, and the pesticide spraying mechanism is protected.

Description

Technical Field

[0001] This invention relates to the field of spraying device technology, and in particular to a herbicide metering drone spraying device. Background Technology

[0002] In traditional methods, manual spraying requires carrying heavy sprayers, and manual walking can easily miss areas and is physically demanding. Ground-based plant protection machinery is significantly limited by terrain, especially in hilly areas, paddy fields, or densely planted areas where its efficiency is low. Traditional agricultural plant protection has long relied on manual or ground-based machinery for pesticide application, resulting in low efficiency, high labor intensity, high risk, and uneven coverage. With the development of precision agriculture, drone spraying technology is gradually becoming a revolutionary solution for modern agriculture. However, existing drone spray nozzles are exposed, and during transportation or storage after spraying, the nozzles often come into contact with transport equipment, causing breakage or blockage, posing a challenge to drone transportation and storage.

[0003] Therefore, there is a need for a herbicide metering drone spraying device that can automatically retract the drone after it bumps into something. Summary of the Invention

[0004] To address the above problems, this invention proposes a herbicide metering drone spraying device, comprising a main body, a herbicide storage mechanism and a spraying unit disposed on the main body, wherein the herbicide storage mechanism and the spraying unit are connected by a pipeline; The spraying unit includes a drive mechanism, a turning mechanism that is driven by the drive mechanism, a rotating mechanism located at the lower end of the turning mechanism, an unfolding drive that is connected to the rotating mechanism, and a spraying mechanism that is driven by the unfolding drive. The spraying mechanism includes a worm gear rotatably mounted on a deployment drive and a first connecting rod and a spraying plate rotatably connected thereto. A second connecting rod is rotatably connected to the other end of the first connecting rod. A third connecting rod is rotatably connected to the end of the second connecting rod away from the first connecting rod. The middle of the third connecting rod is rotatably connected to the end of the spraying plate away from the first connecting rod. A spraying head is provided inside the third connecting rod. A turbine tooth is provided at the end of the first connecting rod away from the second connecting rod, and the turbine tooth meshes with the worm gear. A plurality of spraying holes are provided inside the spraying plate.

[0005] Furthermore, the drive mechanism includes a fixed frame fixedly connected to the main body device, a second motor fixedly connected to the fixed frame, a lead screw rotatably installed in the fixed frame, and a limiting sleeve installed inside the fixed frame; the lead screw is rotatably installed in the circular hole of the limiting sleeve.

[0006] Furthermore, the spraying unit also includes a limiting barrel disposed at the lower end of the fixed frame, and a protective sleeve disposed at the lower end of the limiting barrel; the limiting barrel and the protective sleeve are in communication.

[0007] Furthermore, the turning mechanism includes a sleeve, a limiting post slidably mounted in a groove on the outer surface of the limiting barrel on the outer side of the sleeve, a first half gear fixedly mounted on the lower surface of the sleeve, a positioning plate rotatably mounted on the lower surface of the sleeve, a second half gear meshing with the first half gear, a servo housing fixedly mounted on the upper surface of the rotating mechanism, and a servo motor disposed on the outer side of the servo housing; the end of the positioning plate away from the first half gear is connected to the servo housing, the servo motor is drivenly connected to the second half gear, the second half gear is rotatably mounted on the outer side of the servo housing, and the first half gear and the positioning plate are coaxial.

[0008] Furthermore, the rotating mechanism includes a fixed ring fixedly connected to the servo housing, a rotating ring rotatably connected to the fixed ring, a servo motor disposed inside the fixed ring, a first gear fixedly connected to the servo motor shaft, and an internal gear disposed inside the rotating ring; the internal gear meshes with the first gear.

[0009] Furthermore, the unfolding drive includes a positioning rod fixed to the lower surface of the rotating ring, a triangular fixing plate fixed to the lower surface of the positioning rod, a worm gear rotatably mounted on the lower surface of the rotating ring, and a power structure fixedly mounted on the lower surface of the rotating mechanism. The power structure is connected to the worm gear transmission, and the worm gear meshes with the worm wheel.

[0010] Furthermore, the power structure includes a third motor fixedly mounted on the lower surface of the rotating ring, and a drive ring fixedly connected to the worm gear, wherein the drive ring is drivenly connected to the third motor.

[0011] Furthermore, the spraying unit also includes an infusion tube, which passes through the deployment drive, rotation mechanism and turning mechanism and is connected to the drug storage mechanism. The other end of the infusion tube is connected to the spraying plate.

[0012] Furthermore, the main device includes a mounting frame, with legs provided on the outside of the mounting frame, a connecting plate provided on the upper surface of the mounting frame, and a drone provided on the upper surface of the connecting plate.

[0013] Furthermore, the medicine storage mechanism includes a fixing plate fixed to the upper surface of the mounting frame, a medicine storage tank on the upper surface of the fixing plate, a lid installed on the upper end of the medicine storage tank, a first motor installed between the medicine storage tank and the fixing plate, a rotating shaft installed inside the medicine storage tank, a scraper installed on the outside of the rotating shaft, the scraper being located inside the medicine storage tank; a first connecting pipe installed at the lower end of the medicine storage tank, the first connecting pipe communicating with the medicine storage tank, and a liquid pump installed on the first connecting pipe.

[0014] Because the present invention adopts the above-described technical solution, the present invention has the following advantages: When the drone needs to be transported or stored after spraying, the present invention drives the worm gear to rotate, which in turn drives the first connecting rod to rotate, which in turn rotates the spray plate and causes the spray plate and spray head to close. The drive mechanism drives the turning mechanism, rotating mechanism and spraying mechanism to retract the protective sleeve, and then the present invention stops on the ground, which facilitates the operator to change the pesticide and carry it away for transport, and protects the spraying mechanism. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention from a frontal view.

[0016] Figure 2 This is a three-dimensional schematic diagram of the overall structure of the present invention from another angle.

[0017] Figure 3 This is a frontal view of the spraying mechanism of the overall structure of the present invention.

[0018] Figure 4 This is a schematic diagram of the main device of the present invention.

[0019] Figure 5 This is a schematic diagram showing the overall and partial enlarged views of the drug storage mechanism of the present invention.

[0020] Figure 6 This is a top view schematic diagram of the drug storage mechanism of the present invention.

[0021] Figure 7 This is a front view schematic diagram of the spraying unit of the present invention.

[0022] Figure 8 for Figure 7 A cross-sectional view along the AA direction.

[0023] Figure 9 This is the intended layout of the spraying mechanism of the present invention.

[0024] Figure 10 This is a partial structure and enlarged schematic diagram of the spraying unit of the present invention.

[0025] Figure 11 This is a schematic diagram showing the connection between the rotating mechanism, the unfolding drive, the infusion tube, and the spraying mechanism of the present invention.

[0026] Figure 12 This is a partially enlarged schematic diagram of the mechanism connecting the rotating mechanism, the unfolding drive, the infusion tube, and the spraying mechanism of the present invention.

[0027] Figure 13 This is a schematic diagram of the spraying mechanism of the present invention.

[0028] Figure 14 This is a schematic diagram of the spraying mechanism of the present invention from another angle.

[0029] Figure 15 This is a schematic diagram of the control system of the present invention.

[0030] Reference numerals: 10. Main body; 11. Mounting frame; 12. Support leg; 13. Unmanned aerial vehicle (UAV); 14. Connecting plate; 20. Medicine storage mechanism; 21. Medicine storage container; 22. Lid; 23. Scraper; 24. Rotating shaft; 25. First motor; 26. Liquid pump; 27. First connecting pipe; 28. Fixing plate; 30. Spraying unit; 31. Drive mechanism; 311. Second motor; 312. Fixing frame; 313. Lead screw; 314. Limiting sleeve; 32. Limiting barrel; 33. Rotating mechanism; 331. Rotating ring; 332. Servo motor; 333. First gear; 334. Internal gear; 335. Fixing ring; 34. Deployment drive; 341. Drive ring; 342. Third motor; 343. Worm gear; 344. Positioning rod; 345. Triangular bracket 35. Fixed plate; 36. Infusion tube; 37. Spraying mechanism; 38. Worm gear; 39. First connecting rod; 30. Second connecting rod; 31. Spraying plate; 32. Third connecting rod; 33. Spraying head; 34. Spraying hole; 35. Turning mechanism; 36. Sleeve; 37. Limiting post; 38. First half gear; 39. Positioning plate; 30. Second half gear; 31. Servo housing; 32. Servo; 33. Protective sleeve. Detailed Implementation

[0031] The technical solution of the present invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention; however, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0032] In the description of this invention, it should be noted that the terms "upper", "lower", "in", "out", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of this invention is usually placed when in use. They are only for the convenience of describing this invention 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 limiting this invention.

[0033] Example: refer to Figure 1 , Figure 2 and Figure 3A herbicide metering drone spraying device, characterized in that it includes a main unit 10, a herbicide storage mechanism 20 and a spraying unit 30 disposed on the main unit 10, wherein the herbicide storage mechanism 20 and the spraying unit 30 are connected by a pipe; specifically, the drone 13 of the main unit 10 is used to drive the flight of the invention, the herbicide storage mechanism 20 is used to store the herbicide solution, and the spraying unit 30 is used to spray the herbicide. Figure 1 , Figure 2 and Figure 3 (The herbicide metering drone spraying device is shown from different angles). It should be noted that the herbicide can be a suspension concentrate, such as 300 g / L penflusulfonamide-pyrflusulfonamide suspension concentrate, or a water-soluble powder solution, such as 3 g / L 72% 2,4-D dimethylamine salt solution.

[0034] refer to Figure 7 and Figure 8 The spraying unit 30 includes a drive mechanism 31, a turning mechanism 37 that is driven to the drive mechanism 31, a rotating mechanism 33 that is located at the lower end of the turning mechanism 37, an unfolding drive 34 that is connected to the rotating mechanism 33, and a spraying mechanism 36 that is connected to the unfolding drive 34. The unfolding drive 34 is driven to the spraying mechanism 36.

[0035] refer to Figure 13 The spraying mechanism 36 includes a worm gear 361 rotatably mounted on a triangular fixed plate 345 of the deployment drive 34, a first connecting rod 362 rotatably connected to a spraying plate 364 (one end of the first connecting rod 362 and one end of the spraying plate 364 are rotatably connected), a second connecting rod 363 rotatably connected to the other end of the first connecting rod 362, and a third connecting rod 365 rotatably connected to the end of the second connecting rod 363 away from the first connecting rod 362. The middle of the third connecting rod 365 is rotatably connected to the end of the spraying plate 364 away from the first connecting rod 362. A spraying head 366 is provided on the inner side of the third connecting rod 365. A turbine tooth is provided on the end of the first connecting rod 362 away from the second connecting rod 363, and the turbine tooth meshes with the worm gear 361. A plurality of spray holes 367 are provided on the inner side of the spraying plate 364 (see reference). Figure 14 Specifically, the worm gear 343 drives the worm wheel 361 to rotate, and the rotation of the worm wheel 361 drives the first connecting rod 362 to rotate upward (see reference). Figure 13 This, in turn, causes the second connecting rod 363 to drive the third connecting rod 365 and the spray plate 364 to rotate upwards (see reference). Figure 13 ), thereby causing the spray plate 364 and spray head 366 to unfold (e.g. Figure 9 As shown), the spray head 366 and the spray plate 364 are connected, and the pesticide is sprayed out through the spray head 366 and the spray hole 367.

[0036] refer to Figure 8The driving mechanism 31 includes a fixed frame 312 fixedly connected to the main body device 10, a second motor 311 fixedly connected to the fixed frame 312, a lead screw 313 rotatably installed in the fixed frame 312, and a limiting sleeve 314 installed inside the fixed frame 312; the lead screw 313 is rotatably installed in the circular hole of the limiting sleeve 314. Specifically, the second motor 311 drives the lead screw 313 to rotate, thereby driving the turning mechanism 37 to slide up and down in the limiting barrel 32 and the protective sleeve 38, and the limiting sleeve 314 is used to limit the lead screw 313.

[0037] refer to Figure 9 The spraying unit 30 also includes a limiting barrel 32 disposed at the lower end of the fixing frame 312, and a protective sleeve 38 disposed at the lower end of the limiting barrel 32; the limiting barrel 32 and the protective sleeve 38 are in communication. Specifically, the protective sleeve 38 is fixedly installed in the round hole of the mounting frame 11.

[0038] refer to Figure 10 The turning mechanism 37 includes a sleeve 371, a limiting post 372 slidably mounted in a groove on the outer surface of the limiting barrel 32 on the outer side of the sleeve 371, a first half gear 373 fixedly mounted on the lower surface of the sleeve 371, a positioning plate 374 rotatably mounted on the lower surface of the sleeve 371, a second half gear 375 meshing with the first half gear 373, a servo housing 376 fixedly mounted on the upper surface of the rotating mechanism 33, and a servo 377 disposed on the outside of the servo housing 376; the end of the positioning plate 374 away from the first half gear 373 is connected to the servo housing 376, the servo 377 is drively connected to the second half gear 375, the second half gear 375 is rotatably mounted on the outside of the servo housing 376, and the first half gear 373 and the positioning plate 374 are coaxial. Specifically, the servo motor 377 drives the second half gear 375 to rotate, which in turn causes the rotating mechanism 33, the deployment drive 34, and the spraying mechanism 36 to rotate around the center of the first half gear 373, thereby driving the spraying mechanism 36 to the side, thus facilitating the spraying of pesticides on the side plants.

[0039] refer to Figure 12 The rotating mechanism 33 includes a fixed ring 335 fixedly connected to the servo housing 376, a rotating ring 331 rotatably connected to the fixed ring 335, a servo motor 332 disposed inside the fixed ring 335, a first gear 333 fixedly connected to the motor shaft of the servo motor 332, and an internal gear 334 disposed inside the rotating ring 331; the internal gear 334 meshes with the first gear 333. Specifically, the servo motor 332 drives the first gear 333, which in turn drives the internal gear 334 and the rotating ring 331 to rotate, and the rotating ring 331 drives the deployment drive 34 and the spraying mechanism 36 to rotate, thereby completing the rotational spraying of the drug.

[0040] refer to Figure 11The unfolding drive 34 includes a positioning rod 344 fixed to the lower surface of the rotating ring 331, a triangular fixing plate 345 fixed to the lower surface of the positioning rod 344, a worm gear 343 rotatably mounted on the lower surface of the rotating ring 331, and a power structure fixedly mounted on the lower surface of the rotating mechanism 33. The power structure is connected to the worm gear 343, and the worm gear 343 meshes with the worm wheel 361. Specifically, the power structure drives the worm gear 343, which in turn drives the worm wheel 361, to unfold and close the spraying mechanism 36.

[0041] Furthermore, the power structure includes a third motor 342 fixedly mounted on the lower surface of the rotating ring 331, and a drive ring 341 fixedly connected to the worm gear 343. The drive ring 341 is also connected to the third motor 342 via a transmission connection. Specifically, the third motor 342 drives the drive ring 341 to rotate, which in turn drives the worm gear 343 to rotate, which in turn drives the worm wheel 361 to rotate. This causes the first connecting rod 362 to rotate at the end away from the second connecting rod 363, thereby unfolding the spray hole 367 and the spray head 366.

[0042] Specifically, the spraying unit 30 further includes an infusion tube 35, which passes through the deployment drive 34, the rotation mechanism 33, and the turning mechanism 37 and communicates with the first connecting tube 27 of the drug storage mechanism 20. The other end of the infusion tube 35 is connected to the spraying plate 364. The infusion tube 35 is divided into two sections, which are connected by an adapter. The adapter includes a first adapter and a second adapter, which are rotatably connected and sealed. The infusion tube 35 is a flexible hose that can be bent.

[0043] refer to Figure 4 The main device 10 includes a mounting frame 11, with support legs 12 on the outside of the mounting frame 11. A connecting plate 14 is provided on the upper surface of the mounting frame 11, and a drone 13 is mounted on the upper surface of the connecting plate 14. Specifically, the drone 13 uses a drive motor inside to rotate the propeller, thereby propelling the invention to a designated location. A medicine storage tank 21 with a medicine storage mechanism 20 on the upper surface of the mounting frame 11 stores the prepared medicine solution. A circular hole is provided on the mounting frame 11 for mounting the protective sleeve 38 of the spraying unit 30. The support legs 12 on the outside of the mounting frame 11 are used to hold the invention.

[0044] refer to Figure 5 The medicine storage mechanism 20 includes a fixing plate 28 fixed to the upper surface of the mounting frame 11, a medicine storage container 21 disposed on the upper surface of the fixing plate 28, a cover 22 installed on the upper end of the medicine storage container 21, a first motor 25 disposed between the medicine storage container 21 and the fixing plate 28, a rotating shaft 24 installed inside the medicine storage container 21, and a scraper 23 disposed on the outer side of the rotating shaft 24 (see reference). Figure 6 The scraper 23 is located inside the medicine storage tank 21; a first connecting pipe 27 is provided at the lower end of the medicine storage tank 21, the first connecting pipe 27 is connected to the medicine storage tank 21, and a liquid pump 26 is provided on the first connecting pipe 27.

[0045] Specifically, the first motor 25 drives the rotating shaft 24, which in turn drives the scraper 23 to rotate, stirring the medicine in the medicine storage tank 21 to prevent the medicine from settling to the bottom. The liquid pump 26 operates to input the medicine in the medicine storage tank 21 into the infusion pipe 35 through the first connecting pipe 27, and then sprays it out through the spraying mechanism 36. The amount of medicine sprayed is controlled by controlling the liquid pump 26, thereby accurately and quantitatively spraying the medicine.

[0046] This embodiment also includes a control system, such as Figure 15 As shown, the control system includes a main controller, a human-machine interface display screen, an information transmission module, a storage module, and a power supply module. The main controller is electrically connected to the human-machine interface display screen, the information transmission module, the storage module, the power supply module, the drone 13, the first motor 25, the liquid pump 26, the second motor 311, the servo motor 332, the third motor 342, the servo motor 377, and the GPS module. The GPS module is mounted on the mounting bracket 11 and is used to locate the position of the invention. The main controller is used to control the operation of the entire herbicide metering drone spraying device. The human-machine interface display screen is used to set the flight path of the drone 13, set the spraying amount of the liquid pump 26, set the angle at which the third motor 342 drives the spraying mechanism 36 to unfold, and set the automatic operation control after the set values ​​are determined. The information transmission module is used for information transmission between the main controller and the main device 10, the liquid storage mechanism 20, and the spraying unit 30. The power supply module is used to provide a stable power supply to the control terminal. The storage module is used to store the operation information data of the entire silencer device.

[0047] Working principle: This invention involves pouring the medicinal liquid and water into a storage tank 21 for stirring. Then, a drone 13 carries the invention to fly above the crops that need weeding. The first motor 25 drives the rotating shaft 24, which in turn drives the scraper 23 to stir the medicinal liquid in the storage tank 21, preventing the medicine from settling to the bottom. Then, the liquid is pumped by the pump 26 and transported to the infusion pipe 35 through the first connecting pipe 27. The amount of liquid delivered is set by setting the operating parameters of the pump 26. The second motor 311 drives the lead screw 313, which in turn drives the turning mechanism 37, the rotating mechanism 33, and the spraying mechanism 36 to extend the protective sleeve 38. Then, the third motor 342 drives the drive ring 341, which in turn drives the worm gear 343 to rotate. The worm gear 343 drives the worm wheel 361 to rotate, which in turn drives the first connecting rod 362 to rotate, thereby causing the spraying plate 364 and the spraying head 366 to unfold (as shown in the image). Figure 9As shown), the spray head 366 and the spray plate 364 are connected, and the pesticide liquid is sprayed out through the spray head 366 and the spray hole 367. When the spraying mechanism 36 needs to be rotated, the servo motor 332 drives the first gear 333, which in turn drives the inner gear 334 and the rotating ring 331 to rotate. The rotating ring 331 drives the unfolding drive 34 and the spraying mechanism 36 to rotate, thereby completing the rotational spraying of the drug.

[0048] When it is necessary to spray pesticides on the side of a plant (e.g., a fruit tree), the servo motor 377 drives the second half gear 375 to rotate, which in turn causes the rotating mechanism 33, the deployment drive 34, and the spraying mechanism 36 to rotate around the center of the first half gear 373, thereby driving the spraying mechanism 36 to the side, thus facilitating the spraying of pesticides on the side of the plant.

[0049] When the pesticide is sprayed, the third motor 342 drives the drive ring 341, which in turn drives the worm gear 343 to rotate. The worm gear 343 drives the worm wheel 361 to rotate, which in turn drives the first connecting rod 362 to rotate, thereby causing the spraying plate 364 to rotate and the spraying head 366 to close (as shown). Figure 11 (as shown) The second motor 311 drives the lead screw 313, which in turn drives the turning mechanism 37, the rotating mechanism 33, and the spraying mechanism 36 to retract the protective sleeve 38 (e.g., Figure 10 (As shown), the invention then stops on the ground, making it convenient for operators to change the dressing and put it away.

Claims

1. A herbicide metering drone spraying device, characterized in that, It includes a main device (10), a drug storage mechanism (20) and a spraying unit (30) disposed on the main device (10), wherein the drug storage mechanism (20) and the spraying unit (30) are connected by a pipeline; The spraying unit (30) includes a drive mechanism (31), a turning mechanism (37) that is connected to the drive mechanism (31), a rotating mechanism (33) that is located at the lower end of the turning mechanism (37), an unfolding drive (34) that is connected to the rotating mechanism (33), and a spraying mechanism (36) that is connected to the unfolding drive (34). The spraying mechanism (36) includes a worm gear (361) rotatably mounted on the deployment drive (34), a first connecting rod (362) rotatably connected to the spraying plate (364), a second connecting rod (363) rotatably connected to the other end of the first connecting rod (362), and a third connecting rod (365) rotatably connected to the end of the second connecting rod (363) away from the first connecting rod (362). The middle of the third connecting rod (365) is rotatably connected to the end of the spraying plate (364) away from the first connecting rod (362). A spraying head (366) is provided inside the third connecting rod (365). A turbine tooth is provided at the end of the first connecting rod (362) away from the second connecting rod (363). The turbine tooth meshes with the worm gear (361). A plurality of spraying holes (367) are provided inside the spraying plate (364).

2. The herbicide metering drone spraying device according to claim 1, characterized in that, The drive mechanism (31) includes a fixed frame (312) fixedly connected to the main body device (10), a second motor (311) fixedly connected to the fixed frame (312), a lead screw (313) rotatably installed in the fixed frame (312), and a limiting sleeve (314) installed inside the fixed frame (312); the lead screw (313) is rotatably installed in the round hole of the limiting sleeve (314).

3. The herbicide metering drone spraying device according to claim 2, characterized in that the spraying unit (30) further includes a limiting barrel (32) disposed at the lower end of the fixed frame (312), and a protective sleeve (38) disposed at the lower end of the limiting barrel (32); the limiting barrel (32) and the protective sleeve (38) are connected.

4. The herbicide metering drone spraying device according to claim 3, characterized in that, The turning mechanism (37) includes a sleeve (371), a limiting post (372) that is slidably installed in a groove on the outer surface of the limiting barrel (32) on the outside of the sleeve (371), a first half gear (373) that is fixedly installed on the lower surface of the sleeve (371), a positioning plate (374) that is rotatably installed on the lower surface of the sleeve (371), a second half gear (375) that meshes with the first half gear (373), a servo housing (376) that is fixedly installed on the upper surface of the rotating mechanism (33), and a servo (377) that is installed on the outside of the servo housing (376); the end of the positioning plate (374) away from the first half gear (373) is connected to the servo housing (376), the servo (377) is connected to the second half gear (375) in a transmission connection, the second half gear (375) is rotatably installed on the outside of the servo housing (376), and the first half gear (373) and the positioning plate (374) are coaxial.

5. A herbicide metering drone spraying device according to claim 4, characterized in that, The rotating mechanism (33) includes a fixed ring (335) fixedly connected to the servo housing (376), a rotating ring (331) rotatably connected to the fixed ring (335), a servo motor (332) disposed inside the fixed ring (335), a first gear (333) fixedly connected to the motor shaft of the servo motor (332), and an internal gear (334) disposed inside the rotating ring (331); the internal gear (334) meshes with the first gear (333).

6. A herbicide metering drone spraying device according to claim 5, characterized in that, The unfolding drive (34) includes a positioning rod (344) fixed on the lower surface of the rotating ring (331), a triangular fixing plate (345) fixed on the lower surface of the positioning rod (344), a worm gear (343) rotatably mounted on the lower surface of the rotating ring (331), and a power structure fixedly mounted on the lower surface of the rotating mechanism (33). The power structure is connected to the worm gear (343) for transmission, and the worm gear (343) meshes with the worm wheel (361).

7. A herbicide metering drone spraying device according to claim 6, characterized in that, The power structure includes a third motor (342) fixedly installed on the lower surface of the rotating ring (331), and a drive ring (341) fixedly connected to the worm (343). The drive ring (341) is connected to the third motor (342) in a transmission connection.

8. A herbicide metering drone spraying device according to claim 1, characterized in that, The spraying unit (30) also includes an infusion tube (35), which passes through the deployment drive (34), the rotation mechanism (33) and the turning mechanism (37) and is connected to the drug storage mechanism (20). The other end of the infusion tube (35) is connected to the spraying plate (364).

9. A herbicide metering drone spraying device according to claim 1, characterized in that, The main device (10) includes a mounting frame (11), with a support leg (12) on the outside of the mounting frame (11), a connecting plate (14) on the upper surface of the mounting frame (11), and a drone (13) on the upper surface of the connecting plate (14).

10. A herbicide metering drone spraying device according to claim 9, characterized in that, The medicine storage mechanism (20) includes a fixing plate (28) fixed on the upper surface of the mounting frame (11), a medicine storage tank (21) set on the upper surface of the fixing plate (28), a cover (22) installed on the upper end of the medicine storage tank (21), a first motor (25) set between the medicine storage tank (21) and the fixing plate (28), a rotating shaft (24) installed inside the medicine storage tank (21), a scraper (23) set on the outside of the rotating shaft (24), the scraper (23) being located inside the medicine storage tank (21); a first connecting pipe (27) set at the lower end of the medicine storage tank (21), the first connecting pipe (27) communicating with the medicine storage tank (21), and a liquid pump (26) set on the first connecting pipe (27).

Images