A jet type pesticide spraying unmanned aerial vehicle

Abstract

The application provides a spraying type pesticide spraying unmanned plane, and relates to the technical field of pesticide spraying unmanned planes, which comprises a body unit, a hoisting assembly, clamping arms arranged in an annular array at the outer edge of the bottom surface of a lower mounting plate, a main arm body, an auxiliary arm body and a traction member, wherein the main arm body is in an arc shape, the top end of the main arm body is fixedly installed on the bottom surface of the lower mounting plate, and the bottom end of the main arm body is rotationally connected to the auxiliary arm body; the top end of the auxiliary arm body is rotationally connected to the traction member; a pesticide spraying assembly comprising a liquid pumping head, a vertical spraying liquid head and a horizontal spraying liquid rod; and a pesticide barrel. The vertical spraying liquid head is combined with the horizontal spraying liquid rod, the spraying range is expanded, and different crop scenes are adapted to. The unmanned plane is designed to have a single-barrel spraying mode and a double-barrel spraying mode, the single-barrel mode meets light operation, the double-barrel mode can increase the single-time pesticide spraying amount, long-distance back-and-forth movement is not needed, different types of pesticides can be stored in the double barrels, and different types of pesticides can be sprayed in a single flight.

Description

Technical Field

[0001] This invention relates to the field of pesticide spraying drone technology, specifically to a jet-type pesticide spraying drone. Background Technology

[0002] In agricultural production, pesticide spraying is a crucial step in ensuring healthy crop growth and controlling pests and diseases. With the advancement of agricultural modernization, pesticide spraying drones are widely used in pesticide spraying operations across various farmlands due to their advantages such as high operational efficiency, minimal terrain limitations, and reduced risk of human contact with pesticides. This is of great significance for improving agricultural production efficiency and ensuring crop yields.

[0003] Currently, common pesticide spraying drones have certain limitations in terms of tank configuration. Most drones only use a single-tank design, which can meet some lightweight operation needs, but when facing large areas of farmland or operation scenarios requiring a large amount of pesticide, the amount of pesticide sprayed at one time is limited, requiring frequent take-off and landing to replenish the pesticide solution, which not only reduces operation efficiency but also increases energy consumption. At the same time, existing drones can usually only store and spray a single type of pesticide. If different types of pesticides need to be sprayed, multiple operations are required, making it impossible to complete the spraying of multiple pesticides in a single flight, and it is difficult to adapt to the diverse pesticide application needs of complex farmland. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a spraying drone for pesticides, which solves the problems mentioned in the background section.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A spraying drone for agricultural pesticides includes a body unit, which includes a lower mounting plate. Arms are mounted at the four corners of the lower mounting plate, and propellers are mounted at the outer ends of each arm. The inner top surfaces of the four arms are connected as one unit via an upper mounting plate. A main unit housing is mounted in the center of the upper mounting plate.

[0007] The hoisting assembly is installed at the center of the bottom surface of the lower mounting plate;

[0008] The clamping arms are arranged in a ring array on the outer edge of the bottom surface of the lower mounting plate. The clamping arms include a main arm body, a secondary arm body, and a traction component. The main arm body is arc-shaped, and its top end is fixedly installed on the bottom surface of the lower mounting plate. The bottom end of the main arm body is rotatably connected to the secondary arm body. The top end of the secondary arm body is rotatably connected to the traction component.

[0009] The spraying assembly includes a liquid extraction head, a vertical spray head, and a horizontal spray bar. The liquid extraction heads are symmetrically installed on the bottom surface of the lower mounting plate. Each set of vertical spray heads is installed at the bottom of the outer end of each set of arms. Two sets of horizontal spray bars are symmetrically arranged. The horizontal spray bars are horizontally placed between the two sets of arms and installed on the top of the lower mounting plate. The output end of the liquid extraction head is connected in parallel with four sets of vertical spray heads and two sets of horizontal spray bars.

[0010] The reagent container includes a container body with an upper arc-shaped cover at the top and a lower arc-shaped cover at the bottom. The upper arc-shaped cover has a structure that is narrower at the top and wider at the bottom, while the lower arc-shaped cover has a structure that is narrower at the bottom and wider at the top. The outer diameter of the bottom of the upper arc-shaped cover is the same as the outer diameter of the top of the lower arc-shaped cover. The bottom surface of the lower arc-shaped cover is provided with supports arranged in a ring array. The inside of the container body is symmetrically provided with self-stopping liquid guide tubes. A central hole is opened in the middle of the container body, and a docking post is rotatably installed inside the central hole. The top surface of the upper arc-shaped cover is screwed with an inwardly protruding liquid filling cap.

[0011] The drones include single-barrel and dual-barrel modes:

[0012] In single-bucket mode, the hoisting assembly is screwed onto the top of the docking column of a set of medicine tanks, the main boom is attached to the side wall of the medicine tank, and the auxiliary boom rotates to lift the medicine tank from the bottom.

[0013] In dual-tank mode, the docking post of the upper medicine tank docks with the docking post of the lower medicine tank; the auxiliary arm rotates to lift the upper medicine tank from the bottom, and the traction component hooks up the lower medicine tank; the liquid pump first extracts the liquid from the upper medicine tank, and then connects to the lower medicine tank when the upper medicine tank is emptied.

[0014] Furthermore, the hoisting assembly includes a drive rod, a clamping ring, and a constraint ring. The drive rod is symmetrically mounted on the bottom surface of the lower mounting plate, and the inner end of the drive rod is connected to the clamping ring. A constraint ring is provided in the middle of the bottom surface of the lower mounting plate.

[0015] Furthermore, the top outer wall of the docking post is provided with a first retaining ring and a second retaining ring. The first retaining ring is spaced at the top of the second retaining ring, and a clamping gap is left between the first retaining ring and the second retaining ring for the clamping ring to extend into. The top surface of the first retaining ring is flush with the end of the docking post, and the bottom outer wall of the docking post is provided with a third retaining ring. The bottom surface of the third retaining ring is flush with the bottom of the docking post. The first retaining ring is fitted into the constraint ring.

[0016] A receiving groove is opened in the middle of the bottom surface of the docking post. The receiving groove contains a spring, and the bottom end of the spring is connected to a stud. The stud slides into the constraint groove. A slider is symmetrically provided on the outer wall of the top of the stud. A sliding groove is symmetrically provided on the inner wall of the receiving groove. The bottom and top of the sliding groove are closed structures. The slider is embedded in the sliding groove. A threaded groove is opened in the middle of the top surface of the docking post. The threaded groove is connected to the stud.

[0017] Furthermore, the interior of the central hole consists of an upper annular groove, a middle annular groove, and a lower annular groove from top to bottom. The upper and lower annular grooves are located at opposite ends of the middle annular groove. The inner diameters of both the upper and lower annular grooves are larger than the inner diameter of the middle annular groove, and the depth of the lower annular groove is greater than the depth of the upper annular groove. The inner diameter of the middle annular groove is adapted to the mating post. The upper annular groove is adapted to the insertion of the second retaining ring, and the lower annular groove is adapted to the insertion of the third retaining ring. The first retaining ring extends out of the central hole, and the stud is flush with and retracted into the lower annular groove. In the dual-barrel mode, the first retaining ring of the lower medicine barrel is embedded in the lower annular groove of the upper medicine barrel.

[0018] Furthermore, the self-stopping liquid guide pipe includes a first liquid guide pipe and a one-way connector. The first liquid guide pipe is vertically installed inside the tank, and its top end is flush with the top surface of the upper arc cover. A one-way connector is installed on the bottom surface of the lower arc cover. The one-way connector extends downward and outward, and its extended part is inserted into the top of the first liquid guide pipe. A second liquid guide pipe is provided at the top of the one-way connector. The second liquid guide pipe is positioned directly below the first liquid guide pipe, and the second liquid guide pipe and the first liquid guide pipe are spaced apart, with the space between them forming a liquid inlet gap. A floating sealing component is vertically slidably fitted on the outside of the first liquid guide pipe, and the floating sealing component descends with the liquid level inside the tank.

[0019] In dual-tank mode, when the medicine in the upper medicine tank is exhausted, the floating sealing component descends to seal the liquid inlet gap, so that the suction force is stably transmitted to the automatic switching liquid guide tube in the lower medicine tank.

[0020] Furthermore, the floating sealing component includes a sleeve, which is slidably fitted onto the outer wall of the first liquid guide tube. The length of the sleeve is greater than the length of the liquid inlet gap. An air bladder is provided on the side wall of the sleeve, and a magnetic ring is provided at the bottom end of the sleeve. A mating ring that is attracted to the magnetic ring is provided on the outer wall of the second liquid guide tube.

[0021] Furthermore, the top and bottom of the upper arc cover are both planar structures, and the depth of the upper arc cover is greater than that of the lower arc cover; multiple sets of inner convex boxes are flush-embedded on the outer wall of the lower arc cover, and multiple sets of locking posts are provided inside the inner convex boxes; multiple sets of clamps are provided on the bottom surface of the upper arc cover, and each set of clamps is arranged opposite to a set of inner convex boxes; the bottom surface of the support is an arc-shaped structure adapted to the upper arc cover; a liquid filling hole is opened on the top surface of the upper arc cover, and a liquid filling cap is screwed into the liquid filling hole.

[0022] Furthermore, a motor is installed at the end of the main boom body, and a drive gear is provided at the output end of the motor. A driven gear is installed at the rotatable connection between the auxiliary boom body and the main boom body, and the drive gear meshes with the driven gear. Constraint guide rails are symmetrically provided on both sides of the auxiliary boom body. The end of the auxiliary boom body protrudes from the constraint guide rails, and the protruding part is an abutment part. The two sets of constraint guide rails are externally slidably connected to traction components. A bracket is provided on the surface of the main boom body.

[0023] In single-barrel mode, the contact part of the auxiliary boom abuts against the clamp; the traction component rotates up and locks onto the clamp.

[0024] In the dual-barrel mode, the contact part of the auxiliary boom abuts against the clamp seat, and the traction component rotates down and hooks onto the locking post.

[0025] Furthermore, the traction component includes a crossbar, side plates, constraint posts, and claws. The top of the claw is fixed to the middle of the crossbar. Side plates are symmetrically arranged at both ends of the crossbar. Constraint posts are arranged on the inner wall of the side plates. The two sets of constraint posts are slidably embedded in the two sets of constraint guide rails respectively. The claws and the claws engage with each other.

[0026] Furthermore, the spraying assembly also includes a pump, the input end of which is connected to a pumping head via a hose, and the output end of which is equipped with an output connector. The two output ends of the output connector are connected to a vertical spray head via hoses, and the remaining output end of the output connector is threaded to a horizontal spray rod or a sealing plug.

[0027] This invention provides a jet-type pesticide spraying drone. Compared with the prior art, it has the following advantages:

[0028] 1. The combination of vertical spray nozzles (for low-growing crops) and horizontal spray bars (for tall crops such as trees) expands the spraying range and adapts to different crop scenarios.

[0029] 2. The drone is designed with single-barrel spraying mode and double-barrel spraying mode. The single-barrel mode is suitable for light-duty operations, while the double-barrel mode can increase the amount of pesticide sprayed in one flight without the need for long-distance round trips. At the same time, the double barrels can also store different types of pesticides, enabling the spraying of different types of pesticides in a single flight.

[0030] 3. The multi-segment clamping arm design achieves the following effects: The rotatable secondary arm can rotate outwards during installation. After assembly, the secondary arm can circumferentially lift the medicine tank closest to the main unit, thus supporting the outer periphery of the medicine tank and ensuring its stability. A traction component is installed at the end of the secondary arm, which can hook up the lower medicine tank in the double-tank mode, achieving circumferential hoisting of the lower medicine tank and ensuring its stability in the double-tank mode.

[0031] 4. The barrel is designed in the shape of a flying saucer, consisting of an upper arc cover and a lower arc cover. This design makes it easier for the clamping arms to fit and clamp the liquid in a circular array. At the same time, the lower arc cover can gather the liquid, making it easier to extract the liquid.

[0032] 5. The design of the docking column can achieve the following effects: the top of the docking column can cooperate with the hoisting component to realize the central hoisting of the medicine tank, forming an internal and external hoisting with the clamping arm to ensure the stability of the medicine tank in different modes; in the double tank mode, the upper and lower docking columns can be docked into one, so that the two medicine tanks are connected into one.

[0033] 6. To ensure that the lower medicine tank can be pumped normally in the dual-tank mode, when the medicine in the upper medicine tank is emptied, the self-stop liquid guide pipe of the upper medicine tank will automatically close, so that the suction force of the pump can be transmitted to the self-stop liquid guide pipe of the lower medicine tank. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1 A schematic diagram of the UAV operation structure in the single-bucket mode of the present invention is shown;

[0036] Figure 2 A schematic diagram of the spraying assembly structure of the present invention is shown;

[0037] Figure 3 A schematic diagram of the hoisting assembly structure of the present invention is shown;

[0038] Figure 4 A schematic diagram of the top structure of the barrel body of the present invention is shown;

[0039] Figure 5 A schematic diagram of the bottom structure of the barrel body of the present invention is shown;

[0040] Figure 6 A schematic diagram of the clamping arm structure in the single-barrel mode of the present invention is shown;

[0041] Figure 7 A schematic diagram of the cross-sectional structure of the barrel connection in the single-barrel mode of the present invention is shown;

[0042] Figure 8 A schematic diagram of the floating sealing component structure of the present invention is shown;

[0043] Figure 9 A schematic diagram of the docking post structure of the present invention is shown;

[0044] Figure 10 A schematic diagram of the UAV operation structure in the dual-barrel mode of the present invention is shown;

[0045] Figure 11 A schematic diagram of the clamping arm structure in the dual-barrel mode of the present invention is shown;

[0046] Figure 12 A schematic diagram of the cross-sectional structure of the barrel connection in the dual-barrel mode of the present invention is shown;

[0047] As shown in the figure:

[0048] 100. Airframe unit; 110. Lower mounting plate; 120. Main chassis; 130. Arm; 140. Propeller blades; 150. Upper mounting plate.

[0049] 200. Lifting assembly; 210. Drive rod; 220. Clamping ring; 230. Constraint ring.

[0050] 300. Spraying assembly; 310. Liquid extraction head; 320. Liquid extraction pump; 330. Output connector; 340. Vertical spray head; 350. Horizontal spray bar.

[0051] 400. Chemical tank; 410. Tank body; 411. Upper arc cover; 412. Lower arc cover; 413. Filling cap; 420. Support; 430. Clamp; 440. Connecting post; 441. First retaining ring; 442. Second retaining ring; 443. Third retaining ring; 444. Stud; 445. Threaded groove; 446. Sliding groove; 447. Sliding block; 448. Spring; 449. Receiving groove; 45. 0. Center hole; 451. Upper annular groove; 452. Middle annular groove; 453. Lower annular groove; 460. Self-stopping liquid guide tube; 461. First liquid guide tube; 462. One-way connector; 463. Second liquid guide tube; 464. Liquid inlet gap; 465. Matching ring; 470. Floating sealing component; 471. Sleeve; 472. Airbag; 473. Magnetic ring; 480. Inner convex box; 481. Locking post.

[0052] 500. Clamping arm; 510. Main arm body; 511. Card holder; 520. Secondary arm body; 521. Driven gear; 522. Contact part; 530. Motor; 531. Drive gear; 540. Constraint guide rail; 550. Traction component; 551. Crossbar; 552. Side plate; 553. Constraint column; 554. Claw. Detailed Implementation

[0053] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are described clearly and completely. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0054] To address the technical problems in the background section, the following is proposed: a jet-type pesticide spraying drone.

[0055] Combination Figures 1-12 As shown, the present invention provides a spray-type pesticide spraying drone, comprising:

[0056] The airframe unit 100 includes a lower mounting plate 110, with arms 130 mounted at each of the four corners of the lower mounting plate 110. Each set of arms 130 has a propeller 140 mounted on its outer end. The inner top surfaces of the four sets of arms 130 are connected as one unit by an upper mounting plate 150. A main unit housing 120 is mounted in the center of the surface of the upper mounting plate 150.

[0057] The hoisting assembly 200 is installed at the center of the bottom surface of the lower mounting plate 110;

[0058] The clamping arms 500 are arranged in a ring array on the outer edge of the bottom surface of the lower mounting plate 110. The clamping arms 500 include a main arm body 510, a secondary arm body 520, and a traction member 550. The main arm body 510 is arc-shaped, and its top end is fixedly installed on the bottom surface of the lower mounting plate 110. The bottom end of the main arm body 510 is rotatably connected to the secondary arm body 520. The top end of the secondary arm body 520 is rotatably connected to the traction member 550.

[0059] The spraying assembly 300 includes a liquid extraction head 310, a vertical spray head 340, and a horizontal spray bar 350. The liquid extraction head 310 is symmetrically installed on the bottom surface of the lower mounting plate 110. Each set of vertical spray heads 340 is installed at the bottom of the outer end of each set of arms 130. Two sets of horizontal spray bars 350 are symmetrically arranged. The horizontal spray bars 350 are horizontally placed between the two sets of arms 130 and installed on the top of the lower mounting plate 110. The output end of the liquid extraction head 310 is connected in parallel to four sets of vertical spray heads 340 and two sets of horizontal spray bars 350.

[0060] The reagent tank 400 includes a tank body 410, with an upper arc cover 411 at the top and a lower arc cover 412 at the bottom. The upper arc cover 411 has a narrower top and a wider bottom structure, while the lower arc cover 412 has a narrower bottom and a wider top structure. The outer diameter of the bottom of the upper arc cover 411 is the same as the outer diameter of the top of the lower arc cover 412. The bottom surface of the lower arc cover 412 is provided with supports 420 arranged in a ring array. The tank body 410 is symmetrically provided with self-stopping liquid guide pipes 460. A central hole 450 is opened in the middle of the tank body 410, and a docking post 440 is rotatably installed inside the central hole 450. A convex liquid filling cap 413 is screwed onto the top surface of the upper arc cover 411.

[0061] The drones include single-barrel and dual-barrel modes:

[0062] In single-bucket mode, the lifting assembly 200 is screwed onto the top of the docking column 440 of a set of medicine tanks 400, the main boom 510 is attached to the side wall of the medicine tank 400, and the auxiliary boom 520 rotates to lift the medicine tank 400 from the bottom.

[0063] In the dual-tank mode, the docking post 440 of the upper medicine tank 400 docks with the docking post 440 of the lower medicine tank 400; the auxiliary arm 520 rotates to lift the upper medicine tank 400 from the bottom, and the traction component 550 hooks up the lower medicine tank 400; the liquid pump 320 extracts the liquid from the upper medicine tank 400, and connects to the lower medicine tank 400 again when the upper medicine tank 400 is emptied.

[0064] In the above scheme:

[0065] 1. The combination of the vertical spray head 340 (for low-growing crops) and the horizontal spray bar 350 (for tall crops such as trees) expands the spraying range and adapts to different crop scenarios.

[0066] 2. The drone is designed with single-barrel spraying mode and double-barrel spraying mode. The single-barrel mode is suitable for light-duty operations, while the double-barrel mode can increase the amount of pesticide sprayed in one flight without the need for long-distance round trips. At the same time, the double barrels can also store different types of pesticides, enabling the spraying of different types of pesticides in a single flight.

[0067] 3. The multi-segment clamping arm 500 design can achieve the following effects:

[0068] 3.1 The auxiliary arm 520 is designed to be rotatable. The auxiliary arm 520 can be rotated outward during installation. After the assembly is completed, the auxiliary arm 520 can support the medicine tank 400 close to the machine body unit 100 in a ring shape, thereby supporting the outer periphery of the medicine tank 400 and ensuring the stability of the medicine tank 400.

[0069] 3.2. A traction component 550 is installed at the end of the auxiliary boom 520. The traction component 550 can hook up the lower medicine tank 400 in the double tank mode, realize the circumferential hoisting of the lower medicine tank 400, and ensure the stability of the lower medicine tank 400 in the double tank mode.

[0070] 4. The barrel body 410 is designed as a flying saucer composed of an upper arc cover and a lower arc cover. This design makes it easier for the clamping arms 500 to fit and clamp the liquid in a circular array. At the same time, the lower arc cover 412 can gather the liquid and facilitate the extraction of the liquid.

[0071] 5. The design of the 440 connecting post can achieve the following effects:

[0072] 5.1 The top of the docking column 440 can cooperate with the hoisting assembly 200 to realize the central hoisting of the medicine tank 400, forming an internal and external hoisting with the clamping arm 500, ensuring the stability of the medicine tank 400 in different modes;

[0073] 5.2 In the dual-barrel mode, the upper and lower sets of docking columns 440 can be docked into one unit, so that the two medicine barrels 400 are connected into one unit;

[0074] 6. In order to ensure that the lower medicine tank 400 can be pumped normally in the dual-tank mode, when the medicine in the upper medicine tank is emptied, the self-stop liquid guide pipe 460 of the upper medicine tank is automatically closed, so that the suction force of the pump 320 is transmitted to the self-stop liquid guide pipe 460 of the lower medicine tank.

[0075] In this embodiment, the hoisting assembly 200 includes a drive rod 210, a clamping ring 220, and a constraint ring 230. The drive rod 210 is symmetrically mounted on the bottom surface of the lower mounting plate 110, and the inner end of the drive rod 210 is connected to the clamping ring 220. The constraint ring 230 is provided in the middle of the bottom surface of the lower mounting plate 110.

[0076] In the above scheme: the drive rod 210 drives the clamping ring 220 to clamp the docking post 440, and the constraint ring 230 assists in positioning the top of the docking post 440, so as to achieve precise alignment and rigid fixation between the agent tank 400 and the UAV, and reduce vibration displacement during flight; the drive rod 210 can be an electric rod or a manually adjustable screw.

[0077] In this embodiment, the top outer wall of the docking post 440 is provided with a first retaining ring 441 and a second retaining ring 442. The first retaining ring 441 is spaced at the top of the second retaining ring 442. A clamping gap is left between the first retaining ring 441 and the second retaining ring 442 for the clamping ring 220 to extend into. The top surface of the first retaining ring 441 is flush with the end of the docking post 440. The bottom outer wall of the docking post 440 is provided with a third retaining ring 443. The bottom surface of the third retaining ring 443 is flush with the bottom of the docking post 440. The first retaining ring 441 is fitted and embedded in the constraint ring 230.

[0078] A receiving groove 449 is formed in the middle of the bottom surface of the docking post 440. A spring 448 is installed inside the receiving groove 449. The bottom end of the spring 448 is connected to a stud 444. The stud 444 is slidably embedded in the receiving groove 449. A slider 447 is symmetrically provided on the outer wall of the top of the stud 444. A sliding groove 446 is symmetrically provided on the inner wall of the receiving groove 449. The bottom and top of the sliding groove 446 are closed structures. The slider 447 is embedded in the sliding groove 446. A screw groove 445 is formed in the middle of the top surface of the docking post 440. The screw groove 445 is connected to the stud 444.

[0079] In the above scheme:

[0080] 1. The first retaining ring 441 and the second retaining ring 442 form a clamping gap for the clamping ring 220 to be inserted, restricting the axial movement of the docking post 440. In this way, the docking post 440 can lift the medicine tank 400. The second retaining ring 442 and the third retaining ring 443 can be I-shaped and clamped at the upper and lower ends of the central hole 450, so that the docking post 440 can lift the medicine tank 400.

[0081] 2. The first retaining ring 441 is embedded in the constraint ring 230, which facilitates the docking and positioning of the medicine tank 400 and the lower mounting plate 110;

[0082] 3. In the double-barrel mode, the upper docking post 440 and the lower docking post 440 are connected by studs 444 and screw grooves 445 to achieve elastic pre-tightening and rigid fixation of the two docking posts 440, ensuring a tight connection.

[0083] In this embodiment, the interior of the central hole 450 consists of an upper annular groove 451, a middle annular groove 452, and a lower annular groove 453 from top to bottom. The upper annular groove 451 and the lower annular groove 453 are respectively located at both ends of the middle annular groove 452. The inner diameters of the upper annular groove 451 and the lower annular groove 453 are both larger than the inner diameter of the middle annular groove 452. The depth of the lower annular groove 453 is greater than the depth of the upper annular groove 451. The inner diameter of the middle annular groove 452 is adapted to the docking post 440. The upper annular groove 451 is adapted to the second retaining ring 442 being embedded. The lower annular groove 453 is adapted to the third retaining ring 443 being embedded. The first retaining ring 441 extends out of the central hole 450. The stud 444 is flush with and retracted into the lower annular groove 453. In the dual-barrel mode, the first retaining ring 441 of the lower medicine barrel 400 is embedded in the lower annular groove 453 of the upper medicine barrel 400.

[0084] In the above scheme: the upper ring groove 451, middle ring groove 452, and lower ring groove 453 of the center hole 450 are respectively adapted to the second retaining ring 442, the docking post 440, and the third retaining ring 443 to achieve axial limiting and radial constraint of the docking post 440; in the double-barrel mode, the first retaining ring 441 of the lower docking post 440 is embedded in the lower ring groove 453 of the upper docking post 440 to ensure precise alignment of the upper and lower barrels and improve stacking stability.

[0085] To enable the self-stop liquid guide tube 460 to extract the lower layer liquid in dual-tank mode, and to avoid installing electrical control structures inside the tank body 410, in this embodiment, the self-stop liquid guide tube 460 includes a first liquid guide tube 461 and a one-way connector 462. The first liquid guide tube 461 is vertically installed inside the tank body 410, and its top end is flush with the top surface of the upper arc cover 411. The one-way connector 462 is installed on the bottom surface of the lower arc cover 412. The one-way connector 462 extends downward and outward, and its extended portion is inserted into the top of the first liquid guide tube 461. A second liquid guide pipe 463 is provided, which is located directly below the first liquid guide pipe 461. The second liquid guide pipe 463 and the first liquid guide pipe 461 are spaced apart, and the space between them is the liquid inlet gap 464. A floating sealing component 470 is vertically slidably fitted on the outside of the first liquid guide pipe 461. The floating sealing component 470 descends with the liquid level in the tank 410. In the dual-tank mode, when the medicine in the upper medicine tank 400 is completely pumped out, the floating sealing component 470 descends to seal the liquid inlet gap 464, so that the suction force is stably transmitted to the automatic switching liquid guide pipe in the lower medicine tank 400.

[0086] In the above scheme: the first liquid guide tube 461 and the second liquid guide tube 463 are automatically switched by a floating sealing component 470: when the upper layer of agent is sufficient, the floating sealing component 470 floats up, and the liquid inlet gap 464 is exposed to allow the agent to flow; after the upper layer of agent is pumped out, the floating sealing component 470 descends to seal the liquid inlet gap 464, and the suction force is automatically transferred to the lower liquid guide tube, without the need for manual intervention, so as to achieve continuous operation.

[0087] In this embodiment, the floating sealing component 470 includes a sleeve 471, which is slidably fitted onto the outer wall of the first liquid guide tube 461. The length of the sleeve 471 is greater than the length of the liquid inlet gap 464. An air bladder 472 is provided on the side wall of the sleeve 471, and a magnetic ring 473 is provided at the bottom end of the sleeve 471. A mating ring 465 that is attracted to the magnetic ring 473 is provided on the outer wall of the second liquid guide tube 463.

[0088] In the above scheme: the length of the sleeve 471 is greater than the liquid inlet gap 464 to ensure complete sealing; the airbag 472 provides buoyancy and rises and falls synchronously with the liquid level to ensure accurate sealing timing; the magnetic ring 473 and the mating ring 465 adsorb and enhance the sealing effect, avoid the loss of suction force, and ensure seamless connection between the upper and lower layer agents.

[0089] In this embodiment, the top end of the upper arc cover 411 and the bottom end of the lower arc cover 412 are both planar structures, and the depth of the upper arc cover 411 is greater than the depth of the lower arc cover 412; multiple sets of inner convex boxes 480 are flush-embedded on the outer wall of the lower arc cover 412, and multiple sets of locking posts 481 are provided inside the inner convex boxes 480; multiple sets of clamps 430 are provided on the bottom surface of the upper arc cover 411, and each set of clamps 430 is arranged opposite to a set of inner convex boxes 480; the bottom surface of the support 420 is an arc-shaped structure adapted to the upper arc cover 411; a liquid filling hole is opened on the top surface of the upper arc cover 411, and a liquid filling cap 413 is screwed into the liquid filling hole.

[0090] In the above scheme: the complementary structure of the upper arc cover 411 and the lower arc cover 412 (narrower at the top and wider at the bottom than the lower and wider at the top) ensures that the top surfaces are flush and fit together when stacked, improving stability; the support 420 adapts to the upper arc cover 411 of the lower barrel to prevent slippage. The inner convex box 480 and the clamping seat 430 cooperate with the auxiliary arm body 520 of the clamping arm 500 to achieve circumferential positioning of the medicine barrel 400; the inner convex design of the liquid filling cap 413 facilitates screwing on and improves the convenience of liquid filling.

[0091] In this embodiment, a motor 530 is installed at the end of the main boom 510, and a drive gear 531 is provided at the output end of the motor 530. A driven gear 521 is installed at the rotatable connection between the auxiliary boom 520 and the main boom 510, and the drive gear 531 meshes with the driven gear 521. Constraint guide rails 540 are symmetrically provided on both sides of the auxiliary boom 520. The end of the auxiliary boom 520 protrudes from the constraint guide rail 540 and the protruding part is the abutment part 522. The two sets of constraint guide rails 540 are slidably connected to the traction member 550. In single-bucket mode, the abutment part of the auxiliary boom abuts against the clamp seat. The traction member rotates upward and retracts and engages with the clamp frame. In double-bucket mode, the abutment part of the auxiliary boom abuts against the clamp seat, and the traction member rotates downward and hooks with the clamp post.

[0092] In the above scheme: the motor 530 drives the auxiliary arm 520 to rotate through gears. In single-bucket mode, the auxiliary arm 520 abuts against the clamping seat 430 and is lifted from the bottom. In double-bucket mode, the traction component 550 of the auxiliary arm 520 hooks into the locking post 481 of the lower bucket. Combined with the constraint guide rail 540, the displacement of the traction component 550 is limited, achieving double fixation inside and outside, and improving the clamping reliability in different modes.

[0093] In this embodiment, the traction member 550 includes a crossbar 551, a side plate 552, a constraint post 553, and a claw 554. The top end of the claw 554 is fixed to the middle of the crossbar 551. The two ends of the crossbar 551 are symmetrically provided with side plates 552. The inner wall of the side plate 552 is provided with constraint posts 553. The two sets of constraint posts 553 are slidably embedded in the two sets of constraint guide rails 540 respectively. The claw 554 and the claw post 481 cooperate to engage.

[0094] In the above scheme: the claw 554 of the traction component 550 hooks into the locking post 481, the constraint post 553 slides along the constraint guide rail 540 to adapt to different barrel diameters, and the crossbar 551 and the side plate 552 enhance the overall rigidity to ensure that the lower medicine barrel 400 is stably fixed during flight.

[0095] In this embodiment, the spraying assembly further includes a pump 320. The input end of the pump 320 is connected to the pump head 310 via a hose. The output end of the pump 320 is equipped with an output connector. The two output ends of the output connector are connected to the vertical spray head 340 via hoses. The remaining output end of the output connector is threaded to the horizontal spray rod 350 or a plug.

[0096] In the above scheme: the liquid pump 320 is connected to the vertical spray head 340 and the horizontal spray bar 350 through the output connector, and the spraying dimension can be selected as needed; the idle interface is sealed with a plug to prevent leakage and improve the adaptability of the equipment to different crops (low / tall).

[0097] Working principle and usage process of this invention:

[0098] Two 400-yard medicine tanks are placed on a receiving frame, which is placed on a truck, and the drone is also placed on the truck. When the medicine filling cap is opened and liquid is added into the tank 410, the liquid causes the airbag 472 to float up, which in turn drives the sleeve 471 to float up along the first liquid guide tube 461. The liquid inlet gap 464 is exposed, and the one-way connector 462 can ensure that the liquid can only enter the tank 410 and cannot be discharged.

[0099] In single-barrel mode: the drone is placed on the medicine barrel 400, the first retaining ring 441 at the top of the docking column 440 is attached to the bottom surface of the lower mounting plate 110, the first retaining ring 441 is embedded in the constraint ring 230, and multiple sets of arc-shaped main arm bodies 510 are attached to the outer wall of the upper arc cover 411.

[0100] Two sets of first drive rods 210 synchronously drive two sets of clamping rings 220 to move inward, and the clamping rings 220 extend between the first retaining ring 441 and the second retaining ring 442, thereby clamping the positioning docking post 440.

[0101] The motor 530 drives the drive gear 531 to rotate, which in turn drives the driven gear 521 to rotate, causing the auxiliary arm 520 to rotate inward to an inclined upward state. The contact part 522 of the auxiliary arm 520 extends into the clamp 430. In this way, the medicine barrel 400 can be lifted from the bottom and the medicine barrel 400 can be prevented from rotating.

[0102] The drone takes off, lifting the pesticide tank 400 into the air. The liquid pump 320 extracts the liquid from the tank 410. The pesticide is then dispersed through the liquid inlet gap 464, the first liquid guide pipe 461, the liquid extraction head 310, and the output connector 330 to each vertical spray head 340 and the horizontal spray bar 350, achieving multi-dimensional spraying. The horizontal spray bar 350 can spray the pesticide horizontally onto the trees.

[0103] When the liquid is completely pumped out, the sleeve 471 descends to block the liquid inlet gap 464, and the magnetic ring 473 adsorbs the mating ring 465.

[0104] In dual-barrel mode: To increase the amount carried in a single operation, or to spray two different agents in stages, the drone can carry two 400-ton agent barrels in a single operation.

[0105] The worker first stacks two medicine barrels 400, with the support 420 of the upper medicine barrel 400 attached to the lower medicine barrel 400; the first retaining ring 441 of the lower docking post 440 is embedded in the lower ring groove 453 of the upper docking post 440, and the first retaining ring 441 of the lower docking post 440 contacts the third retaining ring 443 of the upper docking post 440; the threaded groove 445 at the top of the lower docking post 440 abuts against the stud 444 at the bottom of the upper docking post 440, retracts upward and compresses the spring 448, and the slider 447 on the side wall of the stud 444 is lifted up along the groove 446;

[0106] The upper docking post 440 is manually rotated, which in turn drives the upper stud 444 to rotate. After the stud 444 engages with the threaded groove 445, the upper stud 444 gradually extends outward and screws into the threaded groove 445 of the lower docking post 440 under the action of the spring 448. When the screwing is completed, the slider 447 moves to the stop at the bottom of the slide groove 446. In this way, the upper medicine tank 400 and the lower medicine tank 400 are docked together.

[0107] The drone is placed on the upper medicine tank 400, and the first retaining ring 441 at the top of the upper docking column 440 is attached to the bottom surface of the lower mounting plate 110. The first retaining ring 441 is embedded in the constraint ring 230.

[0108] Two sets of first drive rods 210 synchronously drive two sets of clamping rings 220 to move inward. The clamping rings 220 extend between the first retaining ring 441 and the second retaining ring 442 of the upper docking post 440, thereby clamping and positioning the upper docking post 440.

[0109] The motor 530 drives the drive gear 531 to rotate, which in turn drives the driven gear 521 to rotate, causing the auxiliary boom 520 to rotate inward to an inclined upward state. The contact part 522 of the auxiliary boom 520 extends into the clamp 430 of the upper medicine tank 400. In this way, the upper medicine tank 400 can be lifted from the bottom. Then, the claws 554 are manually hooked onto the clamping post 481 of the lower medicine tank 400. Multiple sets of claws 554 can lift the lower medicine tank 400. Combined with the connection between the upper docking post 440 and the lower docking post 440, the stable internal and external double lifting of the two tanks can be achieved.

[0110] The drone lifts the two tanks into the air to spray liquid. When the liquid is pumped out, the sleeve 471 inside the upper agent tank 400 descends to seal the liquid inlet gap 464, and the magnetic ring 473 adsorbs the mating ring 465. In this way, the suction force drawn out by the pump 320 can be transmitted to the first liquid guide pipe 461 inside the lower agent tank 400, so that the pump 320 can draw out the agent in the lower agent tank 400 while the pump head 310 remains stationary and the upper agent tank 400 is emptied.

[0111] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0112] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A spray-type pesticide spraying drone, characterized in that, include: The airframe unit includes a lower mounting plate, with booms mounted at each of the four corners of the lower mounting plate. Each boom has a propeller at its outer end, and the inner top surfaces of the four booms are connected by an upper mounting plate. The main unit housing is mounted in the center of the upper mounting plate. The hoisting assembly is installed at the center of the bottom surface of the lower mounting plate; The clamping arms are arranged in a ring array on the outer edge of the bottom surface of the lower mounting plate. The clamping arms include a main arm body, a secondary arm body, and a traction component. The main arm body is arc-shaped, and its top end is fixedly installed on the bottom surface of the lower mounting plate. The bottom end of the main arm body is rotatably connected to the secondary arm body. The top end of the secondary arm body is rotatably connected to the traction component. The spraying assembly includes a liquid extraction head, a vertical spray head, and a horizontal spray bar. The liquid extraction heads are symmetrically installed on the bottom surface of the lower mounting plate. Each set of vertical spray heads is installed at the bottom of the outer end of each set of arms. Two sets of horizontal spray bars are symmetrically arranged. The horizontal spray bars are horizontally placed between the two sets of arms and installed on the top of the lower mounting plate. The output end of the liquid extraction head is connected in parallel with four sets of vertical spray heads and two sets of horizontal spray bars. A medicine container, comprising a container body, the top of which is an upper arc cover and the bottom of which is a lower arc cover; The upper arc cover has a narrow upper and wide lower structure, while the lower arc cover has a narrow lower and wide upper structure. The outer diameter of the bottom of the upper arc cover is the same as the outer diameter of the top of the lower arc cover. The bottom surface of the lower arc cover is provided with a ring-shaped array of supports. The inside of the tank is symmetrically provided with self-stopping liquid guide pipes. A central hole is opened in the middle of the tank, and a docking column is rotatably installed inside the central hole. The top surface of the upper arc cover is screwed with an inwardly convex liquid filling cap. The drones include single-barrel and dual-barrel modes: In single-bucket mode, the hoisting assembly is screwed onto the top of the docking column of a set of medicine tanks, the main boom is attached to the side wall of the medicine tank, and the auxiliary boom rotates to lift the medicine tank from the bottom. In dual-tank mode, the docking post of the upper medicine tank docks with the docking post of the lower medicine tank; the auxiliary arm rotates to lift the upper medicine tank from the bottom and the traction component hooks up the lower medicine tank; the liquid pump first extracts the liquid from the upper medicine tank and then connects to the lower medicine tank when the upper medicine tank is emptied. The self-stop liquid guide tube includes a first liquid guide tube and a one-way connector. The first liquid guide tube is vertically installed inside the tank, and its top end is flush with the top surface of the upper arc cover. A one-way connector is installed on the bottom surface of the lower arc cover. The one-way connector extends downward and outward, and its extended part is inserted into the top of the first liquid guide tube. A second liquid guide tube is provided at the top of the one-way connector. The second liquid guide tube is located directly below the first liquid guide tube. The second liquid guide tube and the first liquid guide tube are spaced apart, and the space between them is a liquid inlet gap. A floating sealing component is vertically slidably fitted on the outside of the first liquid guide tube. The floating sealing component descends with the liquid level inside the tank. In dual-tank mode, when the medicine in the upper medicine tank is exhausted, the floating sealing component descends to seal the liquid inlet gap, so that the suction force is stably transmitted to the lower medicine tank and the liquid guide tube is automatically switched.

2. The spraying pesticide drone according to claim 1, characterized in that: The hoisting assembly includes a drive rod, a clamping ring, and a constraint ring. The drive rod is symmetrically mounted on the bottom surface of the lower mounting plate, and the inner end of the drive rod is connected to the clamping ring. A constraint ring is provided in the middle of the bottom surface of the lower mounting plate.

3. The spraying pesticide drone according to claim 1, characterized in that: The top outer wall of the docking post is provided with a first retaining ring and a second retaining ring. The first retaining ring is located at the top of the second retaining ring. A clamping gap is left between the first retaining ring and the second retaining ring for the clamping ring to extend into. The top surface of the first retaining ring is flush with the end of the docking post. The bottom outer wall of the docking post is provided with a third retaining ring. The bottom surface of the third retaining ring is flush with the bottom of the docking post. The first retaining ring is fitted into the constraint ring. A receiving groove is opened in the middle of the bottom surface of the docking post. A spring is installed inside the receiving groove. The bottom end of the spring is connected to a stud. The stud slides into the constraint groove. A slider is symmetrically provided on the outer wall of the top of the stud. A sliding groove is symmetrically provided on the inner wall of the receiving groove. The bottom and top of the sliding groove are closed structures. The slider is embedded in the sliding groove. A threaded groove is opened in the middle of the top surface of the docking post. The threaded groove is connected to the stud.

4. The spraying pesticide drone according to claim 1, characterized in that: The interior of the central hole consists of an upper annular groove, a middle annular groove, and a lower annular groove from top to bottom. The upper and lower annular grooves are located at opposite ends of the middle annular groove. The inner diameters of both the upper and lower annular grooves are larger than the inner diameter of the middle annular groove, and the depth of the lower annular groove is greater than the depth of the upper annular groove. The inner diameter of the middle annular groove is adapted to the mating post. The upper annular groove is adapted to the insertion of the second retaining ring, and the lower annular groove is adapted to the insertion of the third retaining ring. The first retaining ring extends out of the central hole, and the stud is flush with and retracted into the lower annular groove. In the double-barrel mode, the first retaining ring of the lower medicine barrel is embedded in the lower annular groove of the upper medicine barrel.

5. The spraying pesticide drone according to claim 1, characterized in that: The floating sealing component includes a sleeve that is slidably fitted onto the outer wall of the first liquid guide tube. The length of the sleeve is greater than the length of the liquid inlet gap. An air bladder is provided on the side wall of the sleeve, and a magnetic ring is provided at the bottom end of the sleeve. A mating ring that is attracted to the magnetic ring is provided on the outer wall of the second liquid guide tube.

6. The spraying pesticide drone according to claim 1, characterized in that: The top and bottom of the upper arc cover are both planar structures, and the depth of the upper arc cover is greater than that of the lower arc cover. Multiple sets of inner convex boxes are flush with the outer wall of the lower arc cover, and multiple sets of locking posts are provided inside the inner convex boxes. Multiple sets of clamps are provided on the bottom surface of the upper arc cover, and each set of clamps is arranged opposite to a set of inner convex boxes. The bottom surface of the support is an arc-shaped structure adapted to the upper arc cover. A liquid filling hole is opened on the top surface of the upper arc cover, and a liquid filling cap is screwed into the liquid filling hole.

7. The spraying pesticide drone according to claim 1, characterized in that: A motor is installed at the end of the main boom, and a drive gear is provided at the output end of the motor. A driven gear is installed at the rotatable connection between the auxiliary boom and the main boom, and the drive gear meshes with the driven gear. Constraint guide rails are symmetrically provided on both sides of the auxiliary boom. The end of the auxiliary boom protrudes from the constraint guide rails and the protruding part is the abutment part. The two sets of constraint guide rails are externally slidably connected to traction components. A bracket is provided on the surface of the main boom. In single-barrel mode, the contact part of the auxiliary boom body abuts against the clamp seat, and the traction component rotates up and locks onto the clamp frame; In the dual-barrel mode, the contact part of the auxiliary boom abuts against the clamp seat, and the traction component rotates down and hooks onto the locking post.

8. The spraying pesticide drone according to claim 1, characterized in that: The traction component includes a crossbar, side plates, constraint posts, and claws. The top of the claws is fixed to the middle of the crossbar. Side plates are symmetrically arranged at both ends of the crossbar. Constraint posts are arranged on the inner walls of the side plates. The two sets of constraint posts are slidably embedded in the two sets of constraint guide rails. The claws and the claws engage with each other.

9. The spraying pesticide drone according to claim 1, characterized in that: The spraying assembly also includes a liquid pump. The input end of the liquid pump is connected to the liquid pump head via a hose. The output end of the liquid pump is equipped with an output connector. The two output ends of the output connector are connected to the vertical spray head via hoses. The remaining output end of the output connector is threaded to the horizontal spray rod or a sealing plug.

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