An unmanned aerial vehicle seed projection device

Abstract

The application belongs to the technical field of unmanned aerial vehicle seeding equipment, and particularly relates to an unmanned aerial vehicle seed projection device. The bottom of an unmanned aerial vehicle body is provided with a soil box, a seed box and a rotary projection mechanism. A driving motor is arranged in the unmanned aerial vehicle body. An extrusion mechanism is arranged in the soil box. The rotary projection mechanism can scrape a certain amount of soil in the soil box, drive the soil through the seed box, make the soil adhere to the seeds to form seed soil particles, and the seed soil particles contain more soil than the single seed particles, are less affected by the wind of the unmanned aerial vehicle, can better fall downward, and are conveniently and accurately projected in a designated area, so as to solve the problem that the seeds are easily scattered by the wind when the existing unmanned aerial vehicle seeding device is used for seeding.

Description

Technical Field

[0001] This invention belongs to the field of drone seeding equipment technology, and particularly relates to a drone seed projection device. Background Technology

[0002] Desertification is becoming increasingly severe in arid and desert regions due to low rainfall, high evaporation, sparse natural vegetation, and poor soil and water conservation capabilities, thus requiring urgent solutions. In recent years, with the continuous advancement of drone technology, the accuracy and stability of its flight paths have been constantly improving, leading to its increasingly widespread application in agricultural and forestry production. Compared with ground machinery, drones offer better maneuverability and faster seeding speed, and are gradually being accepted and used by farmers for seeding.

[0003] Chinese patent CN208863148U discloses a flying seeding device, which includes a material hopper, a material throwing mechanism, a feeding mechanism, and a control unit, as well as a vibration motor mounted on the material hopper. During operation, the feeding mechanism discharges material from the hopper to the material throwing mechanism, where the material is scattered under centrifugal force. This seeding device can effectively sow seeds on arid desert soils. However, when sowing small seeds such as grass seeds, the seeds are easily scattered by the wind force of the drone, making it difficult to achieve uniform sowing and accurately place them in the designated remediation area. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a drone seed projection device to solve the problem that seeds are easily scattered by wind when the existing drone seeding device is used for seeding.

[0005] The present invention solves the above-mentioned technical problems through the following technical means:

[0006] A drone seed projection device includes a drone body. The bottom of the drone body has a soil box, a seed box, and a rotating projection mechanism. A drive motor is installed inside the drone body. A squeezing mechanism is installed inside the soil box. The rotating projection mechanism scrapes a fixed amount of soil from the soil box and drives the soil through the seed box, causing the soil to adhere to the seeds and form seed-soil particles. The rotating projection mechanism includes a shaft. The top end of the shaft is connected to the drive motor, and the bottom end of the shaft has a connecting sleeve. Several movable rods are connected to the connecting sleeve. The ends of the movable rods are hinged to the connecting sleeve, and the other ends of the movable rods have scrapers. A tension spring is connected to the middle of the movable rod, and the other end of the tension spring is connected to the connecting sleeve. Under the tension of the tension spring, the ends of the movable rods can resist the pressure of the soil. On the outer contour of the connecting sleeve; the bottom of the side wall of the soil box facing the rotary projection mechanism is provided with an upwardly inclined first channel, which is connected to the interior of the soil box; the bottom of the side wall of the seed box facing the rotary projection mechanism is provided with an upwardly inclined second channel; both the first and second channels are provided with expansion sections for the scraper to pass through; the first and second channels are on the same horizontal plane and are connected; the seed box is provided with a discharge port, which is located below the horizontal line of the expansion section; the connecting sleeve is located below the horizontal line of the first channel; the bottom of the soil box is provided with a guide plate, and the side wall of the guide plate is provided with a downwardly inclined section, the top of which is flush with the first channel; under the guidance of the guide plate, the movable rod can enter the first channel along the downwardly inclined section of the guide plate.

[0007] Based on the above technical solution, the present invention has also made the following improvements:

[0008] Furthermore, the movable rod includes a connecting rod, one end of which is hinged to a connecting sleeve, and the other end of which is rotatably connected to a rotating rod. The end of the rotating rod away from the connecting rod is fixedly connected to the scraper. The outer contour of the rotating rod is provided with gear teeth, and the first and second channels are provided with racks that mesh with the gear teeth. The scraper moves forward in a rolling manner within the channels, scraping off an equal amount of soil each time, allowing the soil on the scraper to better adhere to the seeds.

[0009] Furthermore, the scraper is semi-circular and shell-shaped, with an open end away from the rotating rod. This facilitates the ejection of seeds and soil particles.

[0010] Furthermore, the moisture content of the soil in the soil box is between 25% and 35%. The soil can maintain good plasticity and stability.

[0011] Furthermore, the extrusion mechanism includes an extrusion plate for extruding soil. A multi-stage telescopic screw is fixedly connected to the top of the extrusion plate. The top of the multi-stage telescopic screw is fixedly connected to the drone body. A transmission wheel is located at the bottom of the drone body. The transmission wheel is coaxially connected to the multi-stage telescopic screw. A drive wheel is located on the shaft. The drive wheel is connected to the transmission wheel via a chain. This prevents the scraper from failing to scrape the soil.

[0012] The beneficial effects of this invention are as follows: Under the guidance of the guide plate, the movable rod can enter the first channel along the lower slope of the guide plate, and the tension spring can be in a stretched state. As the movable rod moves, the scraper at the end of the movable rod can scrape off a certain amount of soil and enter the second channel. When the soil scraped off by the scraper passes through the second channel, the seeds in the second channel can stick to the soil to form seed-soil particles. When the movable rod leaves the second channel, it can quickly return to the initial state under the tension of the tension spring. The seed-soil particles can be thrown out under the action of inertia, thereby achieving the projection effect. Compared with individual seed particles, the seed-soil particles contain more soil weight and are less affected by the wind force of the drone, so they can fall downwards better and are easier to accurately place in the designated area. Attached Figure Description

[0013] The present invention can be further illustrated by the non-limiting embodiments given in the accompanying drawings;

[0014] Figure 1 This is a schematic diagram of the seed projection device in an embodiment of the present invention;

[0015] Figure 2 This is a schematic diagram showing the connection between the soil box, seed box, and rotating projection mechanism in an embodiment of the present invention.

[0016] Figure 3 This is a schematic diagram showing the connection between the extrusion mechanism and the rotary projection mechanism in an embodiment of the present invention;

[0017] Figure 4 This is a schematic diagram of the internal structure of the soil box in an embodiment of the present invention;

[0018] Figure 5 yes Figure 2 A magnified view of a portion of point A in the middle;

[0019] Figure 6 This is a schematic diagram of the structure of the movable rod in an embodiment of the present invention;

[0020] Among them, 1-UAV body, 2-soil box, 21-first channel, 22-expansion section, 23-guide plate, 231-lower slope section, 3-seed box, 31-second channel, 32-discharge port, 33-rack, 4-rotary projection mechanism, 41-shaft, 42-connecting sleeve, 43-moving rod, 431-connecting rod, 432-rotating rod, 433-wheel tooth, 44-scraper, 45-tension spring, 5-extrusion mechanism, 51-extrusion plate, 52-multi-stage telescopic screw, 53-transmission wheel, 54-drive wheel. Detailed Implementation

[0021] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments:

[0022] like Figures 1 to 6As shown

[0023] A drone seed projection device includes a drone body 1, a soil box 2 and a seed box 3 at the bottom of the drone body 1, and a rotating projection mechanism 4 located between the soil box 2 and the seed box 3. The drone body 1 is equipped with a drive motor for driving the rotating projection mechanism 4 to rotate. The soil box 2 is equipped with a squeezing mechanism 5 for squeezing the soil. The rotating projection mechanism 4 can scrape a certain amount of soil in the soil box 2 and drive the soil through the seed box 3, so that the soil adheres to the seeds to form seed soil particles, thereby increasing the weight of the seeds and preventing the seeds from scattering everywhere.

[0024] The rotary projection mechanism 4 includes a shaft 41, the top end of which is connected to a drive motor, which can drive the shaft 41 to rotate. The bottom end of the shaft 41 is provided with a connecting sleeve 42, and several movable rods 43 are connected to the connecting sleeve 42. The ends of the movable rods 43 are hinged to the connecting sleeve 42, and the movable rods 43 can rotate up and down along the hinge axis. The other end of the movable rods 43 is provided with a scraper 44 for scraping soil. A tension spring 45 is connected to the middle of the movable rods 43, and the other end of the tension spring 45 is connected to the connecting sleeve 42. Under the tension of the tension spring 45, the end of the movable rod 43 can abut against the outer contour of the connecting sleeve 42.

[0025] The bottom of the side wall of the soil box 2 facing the rotating projection mechanism 4 is provided with an upwardly inclined first channel 21, which is connected to the interior of the soil box 2. The bottom of the side wall of the seed box 3 facing the rotating projection mechanism 4 is provided with an upwardly inclined second channel 31. Both the first channel 21 and the second channel 31 are provided with an expansion section 22 for the scraper 44 to pass through. The first channel 21 and the second channel 31 are on the same horizontal plane and are connected. The movable rod 43 can move along the first channel 21 and the second channel 31. The seed box 3 is provided with a discharge port 32. The seeds can fall into the expansion section 22 of the second channel 31 through the discharge port 32. The discharge port 32 is located below the horizontal line of the expansion section 22. The seeds in the expansion section 22 can cover the discharge port 32, thereby blocking the discharge port 32.

[0026] The connecting sleeve 42 is located below the horizontal line of the first channel 21. The bottom of the soil box 2 is provided with a guide plate 23, and the side wall of the guide plate 23 is provided with a downward slope 231. The top of the downward slope 231 is flush with the first channel 21. Under the guidance of the guide plate 23, the movable rod 43 can enter the first channel 21 along the downward slope 231 of the guide plate 23, which can keep the tension spring 45 in a stretched state. As the movable rod 43 moves, the scraper 44 located at the end of the movable rod 43 can scrape a certain amount of soil and enter the second channel 31. When the soil scraped by the scraper 44 passes through the second channel 31, the seeds in the second channel 31 can stick to the soil to form seed soil particles. When the movable rod 43 leaves the second channel 31, it can quickly return to the initial state under the pulling force of the tension spring 45. The seed soil particles can be thrown out under the action of inertia, thereby achieving the projection effect. Compared with individual seed particles, the seed soil particles contain more soil weight and are less affected by the wind force of the drone, so they can fall downward better and are easier to accurately place in the designated area.

[0027] Specifically, the movable rod 43 includes a connecting rod 431. One end of the connecting rod 431 is hinged to the connecting sleeve 42, and the other end of the connecting rod 431 is rotatably connected to a rotating rod 432. The end of the rotating rod 432 away from the connecting rod 431 is fixedly connected to the scraper 44. The outer circumference of the rotating rod 432 is provided with gear teeth 433. The first channel 21 and the second channel 31 are provided with racks 33 that cooperate with the gear teeth 433. When the movable rod 43 moves in the first channel 21 and the second channel 31, the rotating rod 432 can rotate under the cooperation of the racks 33 and the gear teeth 433, thereby driving the scraper 44 to rotate, so that the scraper 44 moves forward in a rolling manner in the channel, avoiding the scraper 44 scraping off excess soil. The amount of soil scraped off by the scraper 44 each time is limited by the size of the scraper 44, and the amount of soil scraped off is almost equal. Moreover, the soil on the scraper 44 can better adhere to the seeds.

[0028] Specifically, the scraper 44 is a semi-circular shell shape, and the end of the scraper 44 away from the rotating rod 432 is open to facilitate the removal of seed soil particles that are stuck to the seeds.

[0029] Specifically, the moisture content of the soil in soil box 2 is between 25% and 35%, and this range of moisture content allows the soil to maintain good plasticity and stability.

[0030] Specifically, the extrusion mechanism 5 includes an extrusion plate 51 for extruding soil. The shape of the extrusion plate 51 is consistent with the inner cavity shape of the soil box 2. A multi-stage telescopic screw 52 is fixedly connected to the top of the extrusion plate 51. The top of the multi-stage telescopic screw 52 is fixedly connected to the drone body 1. A transmission wheel 53 is provided at the bottom of the drone body 1. The transmission wheel 53 is coaxially connected to the multi-stage telescopic screw 52. A drive wheel 54 is provided on the shaft 41. The drive wheel 54 is connected to the transmission wheel 53 through a chain. The shaft 41 can drive the transmission wheel 53 to rotate while driving the movable rod 43 to rotate. This can simultaneously drive the multi-stage telescopic screw 52 to extend and retract, thereby scraping the soil while extruding it downwards, avoiding the situation where the scraper 44 cannot scrape the soil.

[0031] The method of using this invention is as follows: Soil and seeds are distributed and placed into soil box 2 and seed box 3. The drone flies to a predetermined altitude, and the drive motor is started. The drive motor drives the rotating projection mechanism 4 to move. Under the guidance of guide plate 23, the movable rod 43 can enter the first channel 21 along the lower inclined part 231 of guide plate 23. The tension spring 45 can be in a stretched state. As the movable rod 43 moves, the scraper 44 located at the end of the movable rod 43 can scrape off a certain amount of soil and enter the second channel 31. The scraper 44 scrapes... When the soil is taken through the second channel 31, the seeds in the second channel 31 can stick to the soil to form seed-soil particles. When the movable rod 43 leaves the second channel 31, under the tension of the tension spring 45, the movable rod 43 can quickly return to the initial state. The seed-soil particles can be thrown out under the action of inertia, thereby achieving the projection effect. Compared with individual seed particles, the seed-soil particles contain more soil weight and are less affected by the wind force of the drone, so they can fall downwards better, avoid the seeds scattering everywhere, and make it easier to accurately place them in the designated area.

[0032] 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 preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the present invention, and all such modifications and substitutions should be covered within the scope of the claims of the present invention. Technical aspects, shapes, and structures not described in detail in this invention are all well-known technologies.

Claims

1. A seed-projecting device for unmanned aerial vehicles (UAVs), comprising a UAV body (1), characterized in that: The bottom of the drone body (1) is equipped with a soil box (2), a seed box (3) and a rotating projection mechanism (4). The drone body (1) is equipped with a drive motor, and the soil box (2) is equipped with a squeezing mechanism (5). The rotating projection mechanism (4) can scrape a certain amount of soil in the soil box (2) and drive the soil through the seed box (3) so that the soil adheres to the seeds to form seed soil particles. The rotary projection mechanism (4) includes a shaft (41), the top end of which is connected to a drive motor, and a connecting sleeve (42) is provided at the bottom end of the shaft (41). Several movable rods (43) are connected to the connecting sleeve (42). The ends of the movable rods (43) are hinged to the connecting sleeve (42). The other end of the movable rods (43) is provided with a scraper (44). A tension spring (45) is connected to the middle of the movable rods (43). The other end of the tension spring (45) is connected to the connecting sleeve (42). Under the tension of the tension spring (45), the end of the movable rod (43) can abut against the outer contour of the connecting sleeve (42). The bottom of the side wall of the soil box (2) facing the rotating projection mechanism (4) is provided with an upwardly inclined first channel (21), which is connected to the interior of the soil box (2). The bottom of the side wall of the seed box (3) facing the rotating projection mechanism (4) is provided with an upwardly inclined second channel (31). Both the first channel (21) and the second channel (31) are provided with an expansion section (22) for the scraper (44) to pass through. The first channel (21) and the second channel (31) are on the same horizontal plane and are connected. The seed box (3) is provided with a discharge port (32), which is located below the horizontal line of the expansion section (22). The connecting sleeve (42) is located below the horizontal line of the first channel (21). The bottom of the soil box (2) is provided with a guide plate (23). The side wall of the guide plate (23) is provided with a downward slope (231). The top of the downward slope (231) is flush with the first channel (21). Under the guidance of the guide plate (23), the movable rod (43) can enter the first channel (21) along the downward slope (231) of the guide plate (23).

2. The unmanned seed projection device of claim 1, wherein: The movable rod (43) includes a connecting rod (431). One end of the connecting rod (431) is hinged to the connecting sleeve (42). The other end of the connecting rod (431) is rotatably connected to a rotating rod (432). The end of the rotating rod (432) away from the connecting rod (431) is fixedly connected to the scraper (44). The outer contour of the rotating rod (432) is provided with gear teeth (433). The first channel (21) and the second channel (31) are provided with racks (33) that cooperate with the gear teeth (433).

3. The unmanned aerial seed projection device of claim 1, wherein: The scraper (44) is a semi-circular shell shape, and the end of the scraper (44) away from the rotating rod (432) is open.

4. The unmanned aerial seed projection device of claim 1, wherein: The moisture content of the soil in the soil box (2) is between 25% and 35%.

5. An unmanned seed projection device according to claim 4, characterized in that: The extrusion mechanism (5) includes an extrusion plate (51) for extruding soil. A multi-stage telescopic screw (52) is fixedly connected to the top of the extrusion plate (51). The top of the multi-stage telescopic screw (52) is fixedly connected to the UAV body (1). A transmission wheel (53) is provided at the bottom of the UAV body (1). The transmission wheel (53) is coaxially connected to the multi-stage telescopic screw (52). A drive wheel (54) is provided on the shaft (41). The drive wheel (54) is connected to the transmission wheel (53) through a chain.

Images