Spreader and method for plant protection unmanned aerial vehicle

Abstract

The invention relates to the field of agricultural plant protection unmanned aerial vehicles, and discloses a broadcaster for a plant protection unmanned aerial vehicle and a method, the broadcaster comprises a material storage box, a refining mechanism is arranged in the material storage box and is used for dividing caked materials into small particles, a broadcasting disc is arranged outside the material storage box, the broadcasting disc is divided into an upper layer and a lower layer, a spraying mechanism is arranged in the sowing disc and used for spraying materials to a designated position, an anti-blocking mechanism is arranged in the sowing disc and used for avoiding blocking during material conveying, the refining mechanism comprises a supporting rod, the supporting rod is fixedly connected to the inner wall of the material storage box, and the supporting rod is fixedly connected to the inner wall of the material storage box. The inner wall of the supporting rod is fixedly connected with an electric telescopic rod. The first motor in the material storage box drives the threaded rod to rotate, so that the multiple sliding blocks move along the threaded rod, then the steel wires are driven to slide in the sliding grooves, caked materials are cut, stirred and the like, and the effects of treating the caked materials and ensuring that the materials flow out smoothly are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of plant protection machinery, and particularly to a broadcaster and method for a plant protection unmanned aerial vehicle (UAV). Background Art

[0002] A broadcaster for a plant protection UAV is a device that integrates the functions of material storage and broadcasting. It mainly consists of a material tank and a broadcasting device. The material tank is used to store materials such as seeds and fertilizers, and its capacity varies depending on different models to meet the operation requirements of farmland with different areas. The broadcasting device usually includes a high-speed rotating component, such as a centrifugal disk or a spiral throwing disk. During operation, the material reaches the broadcasting device from the material tank under the assistance of gravity or a simple pushing device. The broadcasting device rotates rapidly driven by an electric motor and uses centrifugal force to evenly broadcast the material around.

[0003] Existing broadcasters have many deficiencies. In terms of material handling, there is a lack of an effective mechanism for handling caked materials. Many agricultural materials, such as fertilizers and seeds, are prone to caking during storage or transportation, resulting in uneven and unsmooth outflow during broadcasting, affecting the broadcasting effect, causing uneven application of pesticides and fertilizers to crops, and affecting the growth quality and yield; in terms of broadcasting accuracy, most broadcasters are difficult to accurately control the spraying position and range of materials and cannot be flexibly adjusted according to different meteorological conditions (such as wind direction and wind speed), resulting in serious waste of materials. At the same time, the plant protection effect is greatly reduced, increasing the agricultural production cost and environmental burden; the blockage problem during the material conveying process is also a key factor that plagues the performance of the broadcaster. Due to the lack of a perfect anti-blocking design, once a blockage occurs, it will not only interrupt the broadcasting operation but also may damage the internal structure of the device, requiring a large amount of time for cleaning and maintenance, seriously reducing the efficiency of agricultural plant protection work. Summary of the Invention

[0004] In view of the deficiencies of the prior art, the present invention provides a broadcaster and method for a plant protection UAV, which solves the problems of material caking, easy blockage of materials, and uneven broadcasting in the prior art.

[0005] To achieve the above objectives, the present invention is realized through the following technical solutions: A broadcaster and method for a plant protection UAV, including a storage tank, wherein a refining mechanism is arranged inside the storage tank for dividing caked materials into small particles, a broadcasting disk is arranged outside the storage tank, the broadcasting disk is divided into upper and lower layers, an ejection mechanism is arranged inside the broadcasting disk for ejecting materials to a specified position, and an anti-blocking mechanism is arranged inside the broadcasting disk for preventing blockage during material transmission.

[0006] Preferably, the refinement mechanism includes a support rod fixedly connected to the inner wall of the storage bin. An electric telescopic rod is fixedly connected to the inner wall of the support rod. The output end of the electric telescopic rod is fixedly connected to a power rod. A motor one is fixedly connected to the inside of the power rod. The output end of the motor one is fixedly connected to a threaded rod. A slider is threadedly connected to the outer wall of the threaded rod. A steel wire is fixedly connected to the outer wall of the slider. A chute is formed on the outer wall of the power rod, and the steel wire is slidably connected inside the chute.

[0007] Preferably, the spraying mechanism includes a curved electric slide rail fixedly connected to the inner wall of the lower layer of the sowing disc. A slide seat one is slidably connected to the outer wall of the curved electric slide rail. A spraying pipe is fixedly connected to the outer wall of the slide seat one. One end of a feed pipe is communicated with the outer wall of the spraying pipe. One end of an air inlet pipe is communicated with the outer wall of the spraying pipe. A nozzle is fixedly connected to one end of the spraying pipe. An elastic membrane is fixedly connected to the inside of the nozzle.

[0008] Preferably, the anti-blocking mechanism includes an anti-blocking component one, an anti-blocking component two, and an anti-blocking component three. The anti-blocking component one is slidably connected to the outer wall of the curved electric slide rail. The anti-blocking component two is rotatably connected to the outer wall of the sowing disc. The anti-blocking component three is rotatably connected to the inner wall of the upper layer of the sowing disc.

[0009] Preferably, the anti-blocking component one includes a slide seat two slidably connected to the outer wall of the curved electric slide rail. An electric push rod is fixedly connected to the outer wall of the slide seat two. A gasket is fixedly connected to the output end of the electric push rod, and the gasket is slidably connected to the other end of the spraying pipe.

[0010] Preferably, the anti-blocking component two includes a motor two fixedly connected to the inside of the sowing disc. The output end of the motor two is fixedly connected to a rotating ring one. One end of a transmission rod is fixedly connected to the outer wall of the rotating ring one, and the other end of the transmission rod is fixedly connected to a rotating ring two. The anti-blocking component three includes a connecting rod. One end of the connecting rod is rotatably connected to the inner wall of the sowing disc. A fan blade is fixedly connected to the outer wall of the connecting rod, and the fan blade is rotatably connected to the inner wall of the sowing disc.

[0011] Preferably, one end of a feed pipe is communicated with the outer wall of the storage bin, and the other end of the feed pipe is communicated with the outer wall of the sowing disc. A spiral feeder is rotatably connected to the inside of the feed pipe. The spiral feeder is fixedly connected to the other end of the connecting rod. One end of a transmission shaft is fixedly connected to the outer wall of the connecting rod, and the other end of the transmission shaft is fixedly connected to the outer wall of the spiral feeder.

[0012] Preferably, a material discharging hole is formed in the inner wall of the upper layer of the sower, and the other end of the feed pipe is communicated with the outer wall of the material discharging hole.

[0013] Preferably, discharge ports are provided on the side walls of the upper and lower layers of the broadcaster. A rotating rod is fixedly connected inside the discharge port. A torsion spring is installed on the outer wall of the rotating rod. One end of the torsion spring is fixedly connected to a closing plate. An air pump is fixedly connected to the outer wall of the broadcaster. The input end of the air pump communicates with the outside, and the output end of the air pump communicates with the other end of an air inlet pipe.

[0014] In addition, the present invention also provides a method for a broadcaster used in a plant protection unmanned aerial vehicle, including the following steps:

[0015] S1. The material is stored in the storage bin. Before the broadcasting operation, if there is caking of the material, the steel wire slides in the chute on the outer wall of the power rod to cut, stir, and other operations on the caked material, and divides it into small particles;

[0016] S2. The material is conveyed to the spreading plate through a feeding pipe communicating with the outer wall of the storage bin. The rotation speed of the screw feeder inside the feeding pipe is controlled according to the type of the material, so that the material stably flows to the spreading plate;

[0017] S3. After entering the spreading plate, if fine spreading is carried out, the spraying mechanism works. The feeding pipe conveys the material to the spraying pipe. The sliding seat one drives the spraying pipe to move and knock open the closing plate of the discharge port. The air pump presses the outside air into the spraying pipe, so that the nozzle sprays out; if fine spreading is not carried out, the connecting rod drives the fan blade to rotate by using the rotation of the screw feeder, so that the material knocks open the closing plate for large-range spreading;

[0018] S4. During the conveying and spraying of the material, the anti-blocking mechanism plays a role. The anti-blocking component three turns the upper-layer material to avoid caking or blocking the feeding holes, and promotes the uniform entry of the material into the feeding pipe; if the feeding pipe is blocked, the anti-blocking component two shakes the feeding pipe to relieve the blockage; if the spraying pipe is blocked, the electric push rod pushes the gasket to slide in the spraying pipe to squeeze and dredge the material in the pipe;

[0019] S5. After the broadcasting operation is completed, the operation of each mechanism is stopped, and the broadcaster is inspected and maintained to prepare for the next operation.

[0020] The present invention provides a broadcaster and a method for a plant protection unmanned aerial vehicle. It has the following beneficial effects:

[0021] 1. In the present invention, the motor one in the storage bin drives the threaded rod to rotate, so that a plurality of sliders move along the threaded rod, and then drives the steel wire to slide in the chute, so as to cut, stir, and other operations on the caked material, achieving the effect of processing the caked material and ensuring the smooth outflow of the material.

[0022] 2. In the present invention, the sliding seat 1 drives the spraying pipe to knock open the closing plate, and then under the action of the air pump, the material is ejected under the combined action of the gas pressure and its own gravity, achieving the effect of imparting an initial momentum to the material. At the same time, after considering the wind direction and wind speed, the material can be ejected more accurately to the designated position, meeting the sowing requirements of different regions.

[0023] 3. Through the combined action of the anti-blocking component 1, anti-blocking component 2, and anti-blocking component 3, the present invention prevents and timely deals with the possible blockage situations during the stages of material transportation, during transportation, and before spraying, etc., achieving the effect of maintaining the stable operation of the sowing process, reducing the equipment failure maintenance time, and improving the operation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a perspective view of the sower in the present invention;

[0025] Figure 2 is a schematic diagram of the subdivision mechanism in the present invention;

[0026] Figure 3 is an internal view of the subdivision mechanism in the present invention;

[0027] Figure 4 is a schematic diagram of the sowing disk in the present invention;

[0028] Figure 5 is a schematic diagram of the anti-blocking component 3 in the present invention;

[0029] Figure 6 is a schematic diagram of the spraying mechanism in the present invention;

[0030] Figure 7 is a schematic diagram of the anti-blocking component 2 in the present invention;

[0031] Figure 8 is a component diagram of the spraying mechanism in the present invention;

[0032] Figure 9 is a schematic diagram of the discharge port in the present invention;

[0033] Figure 10 is a schematic diagram of the sower in the present invention;

[0034] Figure 11 is an internal view of the subdivision mechanism in the present invention.

[0035] Among them, 1. storage bin; 2. sowing disc; 3. support rod; 4. electric telescopic rod; 5. power rod; 6. motor 1; 7. threaded rod; 8. slider; 9. steel wire; 10. chute; 11. curved electric slide rail; 12. slide seat 1; 13. spray pipe; 14. feed pipe; 15. air inlet pipe; 16. nozzle; 17. elastic membrane; 18. slide seat 2; 19. electric push rod; 20. gasket; 21. motor 2; 22. rotating ring 1; 23. transmission rod; 24. rotating ring 2; 25. connecting rod; 26. fan blade; 27. material conveying pipe; 28. screw feeder; 29. transmission shaft; 30. blanking hole; 31. discharge port; 32. rotating rod; 33. torsion spring; 34. closing plate; 35. air pump. Specific implementation manner

[0036] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0037] Please refer to the attached Figure 1 - attached Figure 11 , the embodiment of the present invention provides a sower and method for a plant protection unmanned aerial vehicle, including a storage bin 1, characterized in that a refinement mechanism is arranged inside the storage bin 1, which is used to divide the agglomerated materials into small particles, and a sowing disc 2 is arranged outside the storage bin 1. The sowing disc 2 is divided into upper and lower layers, and a spraying mechanism is arranged inside the sowing disc 2, which is used to spray the materials to a designated position, and a clogging prevention mechanism is arranged inside the sowing disc 2, which is used to prevent clogging when the materials are conveyed.

[0038] The refinement mechanism includes a support rod 3, the support rod 3 is fixedly connected to the inner wall of the storage bin 1, an electric telescopic rod 4 is fixedly connected to the inner wall of the support rod 3, the output end of the electric telescopic rod 4 is fixedly connected to a power rod 5, a motor 1 6 is fixedly connected to the inside of the power rod 5, the output end of the motor 1 6 is fixedly connected to a threaded rod 7, a slider 8 is threadedly connected to the outer wall of the threaded rod 7, a steel wire 9 is fixedly connected to the outer wall of the slider 8, and a chute 10 is opened on the outer wall of the power rod 5, and the steel wire 9 is slidably connected to the inside of the chute 10.

[0039] Please refer to the attached Figure 2 and attached Figure 3, Specifically, in the refining mechanism, the support rod 3 is fixed to the inner wall of the storage bin 1 to play a supporting role and ensure the stability of the mechanism. The electric telescopic rod 4 is connected between the inner wall of the support rod 3 and the power rod 5, and can adjust the vertical position of the power rod 5 to adapt to the height of different caked materials. The power rod 5 is connected to the first motor 6 and the steel wire 9 to transmit power and support the movement of the steel wire 9. The first motor 6, as the core power, drives the threaded rod 7 to rotate, and its rotation speed and direction can be adjusted according to the caking degree of the materials. The threaded rod 7 is threadedly connected to the slider 8 to drive the slider 8 to move horizontally, thereby adjusting the horizontal position of the steel wire 9. The steel wire 9 on the slider 8 is used to cut and stir the caked materials into small particles to ensure smooth outflow of the materials. The chute 10 on the outer wall of the power rod 5 guides and limits the movement of the steel wire 9 to ensure accurate movement and prevent equipment damage.

[0040] The spraying mechanism includes a curved electric slide rail 11, which is fixedly connected to the inner wall of the lower layer of the sowing disc 2. A first sliding seat 12 is slidably connected to the outer wall of the curved electric slide rail 11. A spraying pipe 13 is fixedly connected to the outer wall of the first sliding seat 12. One end of a feed pipe 14 is communicated with the outer wall of the spraying pipe 13. One end of an air inlet pipe 15 is communicated with the outer wall of the spraying pipe 13. A nozzle 16 is fixedly connected to one end of the spraying pipe 13. An elastic membrane 17 is fixedly connected to the inside of the nozzle 16.

[0041] Please refer to the appendix Figure 6 and the appendix Figure 8 , Specifically, in the spraying mechanism, the curved electric slide rail 11 is fixed to the inner wall of the lower layer of the sowing disc 2 to provide movement power and position adjustment track for subsequent components. Its curved structure can guide the first sliding seat 12 to drive the spraying pipe 13 to adjust the spraying angle to ensure accurate spraying of the materials. The first sliding seat 12 connects the spraying pipe 13 and the slide rail 11, and can drive the spraying pipe 13 to move to the specified position and maintain stability. The feed pipe 14 on the outer wall of the spraying pipe 13 is used to receive the materials from the storage bin 1. The air inlet pipe 15 introduces air under the action of the air pump 35 to accelerate the mixing of the materials and then spray them out from the nozzle 16. The elastic membrane 17 in the nozzle 16 deforms when the materials are sprayed to allow the materials to pass through, and quickly returns to close the nozzle 16 after spraying to prevent material leakage.

[0042] The anti-blocking mechanism includes a first anti-blocking component, a second anti-blocking component and a third anti-blocking component. The first anti-blocking component is slidably connected to the outer wall of the curved electric slide rail 11. The second anti-blocking component is rotatably connected to the outer wall of the sowing disc 2. The third anti-blocking component is rotatably connected to the inner wall of the upper layer of the sowing disc 2.

[0043] The first anti-blocking component includes a second sliding seat 18, which is slidably connected to the outer wall of the curved electric slide rail 11. An electric push rod 19 is fixedly connected to the outer wall of the second sliding seat 18. A gasket 20 is fixedly connected to the output end of the electric push rod 19. The gasket 20 is slidably connected to the other end of the spraying pipe 13.

[0044] The anti-blocking component two includes a second motor 21, the second motor 21 is fixedly connected inside the sowing disc 2, the output end of the second motor 21 is fixedly connected with a first rotating ring 22, one end of the outer wall of the first rotating ring 22 is fixedly connected with one end of a transmission rod 23, and the other end of the transmission rod 23 is fixedly connected with a second rotating ring 24; the anti-blocking component three includes a connecting rod 25, one end of the connecting rod 25 is rotatably connected to the inner wall of the sowing disc 2, the outer wall of the connecting rod 25 is fixedly connected with a fan blade 26, and the fan blade 26 is rotatably connected to the inner wall of the sowing disc 2.

[0045] Please refer to the attached Figure 4 and the attached Figure 5 and the attached Figure 7 Specifically, the anti-blocking mechanism prevents or deals with blockages at all stages of material transportation through the anti-blocking component one, the anti-blocking component two, and the anti-blocking component three. The anti-blocking component one slides on the outer wall of the curved electric slide rail 11 and can quickly take its place to deal with blockages when the injection pipe 13 is blocked. Its second sliding seat 18 carries the electric push rod 19 to move flexibly on the slide rail, ensuring the accurate position of the push rod. The electric push rod 19 pushes the push gasket 20, so that the gasket 20 extends into the injection pipe 13 to squeeze and push the blockage, restoring the material flow; the rotating ring two 24 in the anti-blocking component two drives the feed pipe 14 to rotate to deal with blockages in the feed pipe 14; the fan blade 26 in the anti-blocking component three rotates on the upper inner wall of the sowing disc 2 to turn and dredge the upper-layer material, preventing caking and accumulation from affecting the transportation and sowing effect of the feeding holes 30.

[0046] One end of a feeding pipe 27 is communicated with the outer wall of the storage bin 1, the other end of the feeding pipe 27 is communicated with the outer wall of the sowing disc 2, a spiral feeder 28 is rotatably connected inside the feeding pipe 27, the spiral feeder 28 is fixedly connected to the other end of the connecting rod 25, one end of the outer wall of the connecting rod 25 is fixedly connected with one end of a transmission shaft 29, and the other end of the transmission shaft 29 is fixedly connected to the outer wall of the spiral feeder 28.

[0047] The upper inner wall of the sower is provided with feeding holes 30, and the other end of the feeding pipe 14 is communicated with the outer wall of the feeding holes 30.

[0048] Please refer to the attached Figure 5 Specifically, the storage bin 1 is communicated with one end of the feeding pipe 27 to provide an output channel for the material to enter the sowing disc 2. The spiral feeder 28 in the feeding pipe 27 stably pushes the material by relying on its own spiral structure. It is connected with the connecting rod 25 to transmit its own power. The transmission shaft 29 receives the power of the spiral feeder 28 to ensure the power supply for subsequent work; the feeding holes 30 on the upper layer of the sower provide a downward channel for the material, and the material is transported to the injection pipe 13 through the communicated feeding pipe 14 to achieve precise sowing.

[0049] The side walls of the upper and lower layers of the broadcaster are both provided with discharge ports 31. A rotating rod 32 is fixedly connected inside the discharge port 31. A torsion spring 33 is installed on the outer wall of the rotating rod 32. One end of the torsion spring 33 is fixedly connected to a closing plate 34. An air pump 35 is fixedly connected to the outer wall of the broadcaster. The input end of the air pump 35 communicates with the outside, and the output end of the air pump 35 communicates with the other end of the air inlet pipe 15.

[0050] Please refer to the attached Figure 4 and the attached Figure 9 , specifically, the discharge ports 31 on the side walls of the upper and lower layers of the broadcaster serve as channels for large-scale spreading of materials. The rotating rod 32 and the torsion spring 33 inside the discharge port 31 support the rotation of the closing plate 34 to realize the automatic opening and closing of the discharge port 31, ensuring anti-leakage when not working and discharging materials when working. The air pump 35 on the outer wall of the broadcaster inhales outside air, compresses it, and sends it into the injection pipe 13 through the air inlet pipe 15, mixing with the materials to enhance the injection effect and improve the spreading efficiency.

[0051] In addition, the present invention also provides a method for a broadcaster used in a plant protection unmanned aerial vehicle, including the following steps:

[0052] S1. The materials are stored in the storage bin 1. Before the spreading operation, if the materials are caked, the steel wire 9 slides in the chute 10 on the outer wall of the power rod 5 to perform operations such as cutting and stirring on the caked materials, dividing them into small particles;

[0053] S2. The materials are conveyed to the spreading disk 2 through the feeding pipe 27 connected to the outer wall of the storage bin 1. The rotation speed of the screw feeder 28 inside the feeding pipe 27 is controlled according to the type of materials to make the materials flow stably towards the spreading disk 2;

[0054] S3. After entering the spreading disk 2, if fine spreading is to be performed, the injection mechanism works. The feeding pipe 14 conveys the materials to the injection pipe 13. The sliding seat one 12 drives the injection pipe 13 to move and knock open the closing plate 34 of the discharge port 31. The air pump 35 presses the outside air into the injection pipe 13, so that the nozzle 16 sprays out; if fine spreading is not performed, the connecting rod 25 drives the fan blade 26 to rotate by the rotation of the screw feeder 28, so that the materials knock open the closing plate 34 for large-scale spreading;

[0055] S4. During the conveyance and injection of the materials, the anti-blocking mechanism plays a role. The anti-blocking component three turns over the upper-layer materials to avoid caking or blocking the feeding holes 30 and promotes the uniform entry of the materials into the feeding pipe 14; if the feeding pipe 14 is blocked, the anti-blocking component two shakes the feeding pipe 14 to relieve the blockage; if the injection pipe 13 is blocked, the electric push rod 19 pushes the gasket 20 to slide in the injection pipe 13 to squeeze and dredge the materials in the pipe;

[0056] S5. After the spreading operation is completed, stop the operation of each mechanism, check and maintain the broadcaster to prepare for the next operation.

[0057] Working principle: In actual use, the material is stored in the storage box 1. When it is necessary to carry out spreading operations, if the material is agglomerated, the refining mechanism inside the storage box 1 starts to operate, and the support rod 3 is fixed to the inner wall of the storage box 1. The electric telescopic rod 4 inside it is started, pushing the power rod 5 to move to the appropriate position, and then the motor 6 is started, driving the threaded rod 7 to rotate, so that multiple sliders 8 move along the outer wall of the threaded rod 7. Since the outer wall of the slider 8 is fixedly connected to the steel wire 9, and the steel wire 9 is slidably connected to the slide groove 10 on the outer wall of the power rod 5, the steel wire 9 will slide in the slide groove 10 with the movement of the slider 8, thereby cutting, stirring and other operations on the agglomerated material, dividing it into small particles, ensuring that the material can flow out of the storage box 1 smoothly, and preparing for the subsequent spreading process.

[0058] Subsequently, the material is transported to the sowing disc 2 through the delivery pipe 27 connected to the outer wall of the storage box 1. The screw feeder 28 inside the delivery pipe 27 is used as a transportation tool to transport the material. According to the type of material, the rotation speed of the screw feeder 28 is controlled to ensure that the material flows stably to the sowing disc 2 (for example, when finely sowing small-particle seeds, the rotation speed is about 500-1000 rpm; if it is a fertilizer with a larger sowing density and slightly larger particles, the rotation speed is increased to 1000-2000 rpm) to prevent the material from being blocked or flowing poorly in the delivery pipe 27.

[0059] After entering the sowing tray 2, if fine sowing is to be carried out, the spraying mechanism starts to work. The upper and lower side walls of the sower are both provided with discharge ports 31. Under normal circumstances, the closing plate 34 inside the discharge port 31 is in a closed state under the action of the torsion spring 33 to prevent material leakage. When spraying materials, the slide block one 12 drives the spray pipe 13 to move and knock open the closing plate 34, and the nozzle 16 extends out of the sowing tray 2. Since the curved electric slide rail 11 has a certain curvature, the angle of the nozzle 16 is indirectly controlled by controlling the travel distance of the slide block one 12. The feed pipe 14 conveys the material to the spray pipe 13, and at the same time, the air pump 35 presses the outside air into the spray pipe 13 through the air inlet pipe 15. Under the combined action of the gas pressure and the self-gravity of the material, the material is mixed and accelerated in the spray pipe 13 and finally sprayed out from the nozzle 16. The elastic membrane 17 inside the nozzle 16 can elastically deform and open when the material passes through, and automatically retract after the material passes through to ensure that the material will not leak. By providing an initial momentum to the material, the spraying mechanism can make the material be sprayed to the designated position more accurately after considering the wind direction and wind speed, meeting the sowing requirements of different regions (when the wind direction is the same as the direction of the initial momentum of the material, the wind speed will increase the resultant velocity of the material, making the material fly farther and exceeding the expected landing point; if the wind direction is opposite to the direction of the initial momentum of the material, the wind speed will decrease the resultant velocity of the material, making the material fall earlier and the landing point closer than expected; when there is an angle between the wind direction and the direction of the initial momentum of the material, the wind speed will change the movement trajectory of the material. The initial velocity of the material and the wind speed can be regarded as vectors, and the velocity vectors are synthesized according to the parallelogram rule to determine the new movement direction and velocity magnitude of the material, thereby affecting the final landing position of the material); after entering the sowing tray 2, if fine sowing is not carried out, the connecting rod 25 of the anti-blocking mechanism three uses the rotation of the screw feeder 28 to drive the fan blade 26 to rotate, so that the material knocks open the closing plate 34 for large-scale sowing.

[0060] During the material transmission and spraying process, the anti-blocking mechanism prevents the occurrence of blockage phenomena and deals with blockage phenomena. During the material transmission process, one end of the connecting rod 25 of the anti-blocking component three is rotatably connected to the inner wall of the sowing tray 2, and the rotation of the fan blade 26 on its outer wall can not only turn over the materials on the upper layer to avoid material caking or blocking the feeding hole 30, but also promote the uniform entry of materials into the feed pipe 14; after the material enters the feed pipe 14, if the feed pipe 14 is blocked, the motor two 21 of the anti-blocking component two rotates reciprocally, driving the rotating ring one 22 to rotate reciprocally. The rotating ring one 22 drives the rotating ring two 24 to rotate synchronously through the transmission rod 23, and then shakes the feed pipe 14 to relieve the blockage phenomenon; the material enters the spray pipe 13 through the feed pipe 14. If the material is blocked in the spray pipe 13, the electric push rod 19 is started to push the gasket 20 to slide in the spray pipe 13, squeeze and dredge the material in the pipe, and clean the possible blockage to ensure the normal flow of the material.

[0061] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A spreader and method for a plant protection drone, comprising a storage box (1), characterized in that: The storage box (1) is provided with a refinement mechanism inside, which is used to divide the agglomerated material into small particles; the storage box (1) is provided with a spreading disc (2) outside, the spreading disc (2) is divided into two layers, an upper layer and an lower layer; the spreading disc (2) is provided with an injection mechanism inside, which is used to inject the material to a specified position; the spreading disc (2) is provided with an anti-blocking mechanism inside, which is used to avoid blockage during material transmission.

2. The spreader and method for a plant protection drone according to claim 1, characterized in that: The thinning mechanism comprises a support rod (3), the support rod (3) is fixedly connected to the inner wall of the storage box (1), the inner wall of the support rod (3) is fixedly connected to an electric telescopic rod (4), the output end of the electric telescopic rod (4) is fixedly connected to a power rod (5), the inside of the power rod (5) is fixedly connected to a motor 1 (6), the output end of the motor 1 (6) is fixedly connected to a threaded rod (7), the outer wall of the threaded rod (7) is threadedly connected to a slider (8), the outer wall of the slider (8) is fixedly connected to a steel wire (9), the outer wall of the power rod (5) is provided with a slide groove (10), and the steel wire (9) is slidably connected to the inside of the slide groove (10).

3. The spreader and method for a plant protection drone according to claim 1, characterized in that: The injection mechanism comprises a curved electric slide rail (11), the curved electric slide rail (11) is fixedly connected to the inner wall of the lower layer of the sowing disc (2), the outer wall of the curved electric slide rail (11) is slidably connected to a slide seat (12), the outer wall of the slide seat (12) is fixedly connected to an injection pipe (13), the outer wall of the injection pipe (13) is connected to one end of a feed pipe (14), the outer wall of the injection pipe (13) is connected to one end of an air intake pipe (15), one end of the injection pipe (13) is fixedly connected to a nozzle (16), and the interior of the nozzle (16) is fixedly connected to an elastic membrane (17).

4. The spreader and method for a plant protection drone according to claim 3, characterized in that: The anti-blocking mechanism comprises an anti-blocking component 1, an anti-blocking component 2 and an anti-blocking component 3, wherein the anti-blocking component 1 is slidably connected to the outer wall of the curved electric slide rail (11), the anti-blocking component 2 is rotationally connected to the outer wall of the sowing disc (2), and the anti-blocking component 3 is rotationally connected to the inner wall of the upper layer of the sowing disc (2).

5. The spreader and method for a plant protection drone according to claim 4, characterized in that: The anti-blocking component 1 comprises a slide seat 2 (18), wherein the slide seat 2 (18) is slidably connected to the outer wall of the curved electric slide rail (11), the outer wall of the slide seat 2 (18) is fixedly connected to an electric push rod (19), the output end of the electric push rod (19) is fixedly connected to a gasket (20), and the gasket (20) is slidably connected to the other end of the injection pipe (13).

6. The spreader and method for a plant protection drone according to claim 4, characterized in that: The anti-blocking component 2 comprises a motor 2 (21), the motor 2 (21) is fixedly connected to the inside of the sowing disc (2), the output end of the motor 2 (21) is fixedly connected to a swivel 1 (22), the outer wall of the swivel 1 (22) is fixedly connected to one end of a transmission rod (23), and the other end of the transmission rod (23) is fixedly connected to a swivel 2 (24); the anti-blocking component 3 comprises a connecting rod (25), one end of the connecting rod (25) is rotatably connected to the inner wall of the sowing disc (2), the outer wall of the connecting rod (25) is fixedly connected to a fan blade (26), and the fan blade (26) is rotatably connected to the inner wall of the sowing disc (2).

7. The spreader and method for a plant protection drone according to claim 1, characterized in that: The outer wall of the material storage box (1) is connected to one end of a material delivery pipe (27), the other end of the material delivery pipe (27) is connected to the outer wall of the sowing plate (2), the interior of the material delivery pipe (27) is rotatably connected to a screw feeder (28), the screw feeder (28) is fixedly connected to the other end of a connecting rod (25), the outer wall of the connecting rod (25) is fixedly connected to one end of a transmission shaft (29), the other end of the transmission shaft (29) is fixedly connected to the outer wall of the screw feeder (28).

8. The spreader and method for a plant protection drone according to claim 3, characterized in that: A feeding hole (30) is provided on the upper inner wall of the spreader, and the outer wall of the feeding hole (30) is connected to the other end of the feeding pipe (14).

9. The spreader and method for a plant protection drone according to claim 3, characterized in that: The side walls of the upper and lower layers of the spreader are both provided with discharge ports (31), the interior of the discharge port (31) is fixedly connected to a rotating rod (32), the outer wall of the rotating rod (32) is installed with a torsion spring (33), one end of the torsion spring (33) is fixedly connected to a closing plate (34), the outer wall of the spreader is fixedly connected to an air pump (35), the input end of the air pump (35) is connected to the outside, and the output end of the air pump (35) is connected to the other end of the air inlet pipe (15).

10. A method of a spreader for a plant protection drone, applied to a spreader for a plant protection drone as claimed in any one of claims 1 to 9, characterized in that: The following steps are involved: S1. Materials are stored in a storage box (1). Before the material is spread, if the material is agglomerated, the steel wire (9) slides in a slide groove (10) on the outer wall of the power rod (5) to cut and stir the agglomerated materials to separate them into small particles. S2, the material is transported to the spreading plate (2) through a feeding pipe (27) connected to the outer wall of the material storage box (1), and the rotation speed of the spiral feeder (28) inside the feeding pipe (27) is controlled according to the type of material, so that the material can flow stably to the spreading plate (2); S3, after entering the sowing disc (2), if fine sowing is to be carried out, the injection mechanism works, the feed pipe (14) conveys the material to the injection pipe (13), the slide seat (12) drives the injection pipe (13) to move and knock open the closing plate (34) of the discharge port (31), and the air pump (35) presses the outside air into the injection pipe (13), so that the nozzle (16) sprays out; if fine sowing is not to be carried out, the connecting rod (25) uses the screw feeder (28) to rotate and drive the fan blade (26) to rotate, so that the material knocks open the closing plate (34) for large-scale sowing; S4. During the material conveying and injection process, the anti-blocking mechanism plays a role. The anti-blocking component 3 turns over the upper layer of material to avoid agglomeration or blocking of the discharge hole (30), and promotes the material to enter the feed pipe (14) evenly; if the feed pipe (14) is blocked, the anti-blocking component 2 shakes the feed pipe (14) to relieve the blockage; if the injection pipe (13) is blocked, the electric push rod (19) pushes the gasket (20) to slide in the injection pipe (13), squeezes and clears the material in the pipe; S5. After the spreading operation is completed, stop the operation of each mechanism, inspect and maintain the spreader, and prepare for the next operation.

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