Unmanned aerial vehicle seed projection device

Abstract

The invention belongs to the technical field of unmanned aerial vehicle seeding equipment, and particularly relates to an unmanned aerial vehicle seed projection device, a soil box, a seed box and a rotary projection mechanism are arranged at the bottom of an unmanned aerial vehicle body, a driving motor is arranged in the unmanned aerial vehicle body, an extrusion mechanism is arranged in the soil box, and the rotary projection mechanism can scrape quantitative soil in the soil box; according to the unmanned aerial vehicle sowing device, the seed box is provided with the soil and drives the soil to pass through the seed box, so that the soil adheres to the seeds to form seed soil particles, and compared with independent seed particles, the seed soil particles contain the soil, are less affected by wind power of the unmanned aerial vehicle, can better fall down and are conveniently and accurately put in a designated area. And the seeds are easy to scatter around under the influence of wind power.

Description

Technical Field

[0001] The invention belongs to the technical field of unmanned aerial vehicle sowing equipment, and in particular relates to a unmanned aerial vehicle seed projection device. Background Art

[0002] Desertification is becoming more and more serious in arid desert areas due to low precipitation, strong evaporation, sparse natural vegetation growth, and poor soil and water conservation capacity. Therefore, it is urgent to solve the problem. In recent years, with the continuous advancement of drone technology, the accuracy and stability of its flight routes have been continuously improved, and its application in agricultural and forestry production has become more and more extensive. Compared with ground machinery, drones have better passability and faster sowing speed, and are gradually being accepted by farmers and used in sowing.

[0003] Chinese patent CN208863148U discloses a flying sowing device, which includes a barrel, a material throwing mechanism, a material discharge mechanism and a control unit, and also includes a vibration motor, which is arranged on the barrel. When working, the material discharge mechanism discharges the material from the barrel to the material throwing mechanism, and the material is spread out under the action of centrifugal force. The sowing device can effectively sow seeds on arid desert soil, but when the device is sowing seeds with smaller mass such as grass seeds, due to the small mass of the seeds, the seeds are easily affected by the wind force of the drone and scattered everywhere, making it difficult to achieve the purpose of uniform sowing, and it is difficult to accurately deliver them to the designated repair area. Summary of the invention

[0004] In view of this, an object of the present invention is to provide a drone seed projection device to solve the problem that seeds of existing drone sowing devices are easily affected by wind and scattered everywhere during sowing.

[0005] The present invention solves the above technical problems by the following technical means:

[0006] A drone seed projection device comprises a drone body, a soil box, a seed box and a rotating projection mechanism are arranged at the bottom of the drone body, a driving motor is arranged in the drone body, a squeezing mechanism is arranged in the soil box, and the rotating projection mechanism can scrape a certain amount of soil in the soil box and drive the soil through the seed box so that the soil adheres to the seeds to form seed soil particles; the rotating projection mechanism comprises a shaft rod, the top end of the shaft rod is connected to the driving motor, the bottom end of the shaft rod is provided with a connecting sleeve, a plurality of movable rods are connected to the connecting sleeve, the end of the movable rod is hinged to the connecting sleeve, the other end of the movable rod is provided with a scraper, the middle part of the movable rod is connected to a tension spring, the other end of the tension spring is connected to the connecting sleeve, and the end of the movable rod can be pressed against the connecting sleeve under the tension of the tension spring. On the outer contour of the connecting sleeve; a first channel inclined upward is provided at the bottom of the side wall of the soil box facing the rotating projection mechanism, and the first channel is connected to the interior of the soil box; a second channel inclined upward is provided at the bottom of the side wall of the seed box facing the rotating projection mechanism, and both the first channel and the second channel are provided with expansion parts for the passage of a scraper, and the first channel and the second channel are on the same horizontal plane and are connected, and a discharge port is provided on the seed box, and the discharge port is located below the horizontal line of the expansion part; the connecting sleeve is located below the horizontal line of the first channel, a guide plate is provided at the bottom of the soil box, and a lower inclined part is provided on the side wall of the guide plate, and the top of the lower inclined part is flush with the first channel, and under the guiding action of the guide plate, the movable rod can enter the first channel along the lower inclined part of the guide plate.

[0007] On the basis of the above technical solution, the present invention also makes the following improvements:

[0008] Furthermore, the movable rod includes a connecting rod, one end of which is hinged to the connecting sleeve, 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 circular contour of the rotating rod is provided with gear teeth, and the first channel and the second channel are provided with racks that match the gear teeth. The scraper moves forward in a rolling manner in the channel, and the amount of soil scraped each time is equal, and the soil on the scraper can better adhere to the seeds.

[0009] Furthermore, the scraper is in the shape of a semicircular shell, and one end of the scraper away from the rotating rod is in an open shape, so as to facilitate the throwing out of the seed and soil particles.

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

[0011] Furthermore, the squeezing mechanism includes a squeezing plate for squeezing soil, the top of the squeezing plate is fixedly connected to a multi-stage telescopic screw, the top of the multi-stage telescopic screw is fixedly connected to the drone body, the bottom of the drone body is provided with a transmission wheel, the transmission wheel is coaxially connected to the multi-stage telescopic screw, the shaft is provided with a driving wheel, and the driving wheel is connected to the transmission wheel through a chain, so as to prevent the scraper from failing to scrape the soil.

[0012] The beneficial effects of the present invention are as follows: under the guiding action of the guide plate, the movable rod can enter the first channel along the lower inclined portion of the guide plate, and the tension spring can be in a stretched state. With the movement of the movable rod, the scraper located at the end of the movable rod can scrape a certain amount of soil and enter the second channel. When the soil scraped on the scraper passes through the second channel, the seeds in the second channel can adhere to the soil to form seed soil particles. When the movable rod leaves the second channel, it can quickly return to its initial state under the tension of the tension spring, and the seed soil particles can be thrown out under the action of inertia, thereby achieving a projection effect. Compared with individual seed particles, the seed soil particles contain heavier soil and are less affected by the wind force of the drone, and can fall down better, so as to facilitate accurate delivery in the designated area. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

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

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

[0017] Figure 4 Schematic diagram of the internal structure of the soil box in an embodiment of the present invention;

[0018] Figure 5 yes Figure 2 A local enlarged schematic diagram of the middle A;

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

[0020] Among them, 1-UAV body, 2-soil box, 21-first channel, 22-expansion part, 23-guide plate, 231-lower inclined part, 3-seed box, 31-second channel, 32-discharge port, 33-rack, 4-rotating projection mechanism, 41-axis rod, 42-connecting sleeve, 43-movable rod, 431-connecting rod, 432-rotating rod, 433-gear teeth, 44-scraper, 45-tension spring, 5-extrusion mechanism, 51-extrusion plate, 52-multi-stage telescopic screw, 53-transmission wheel, 54-driving wheel. DETAILED DESCRIPTION

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

[0022] like Figures 1 to 6Shown

[0023] A drone seed projection device comprises a drone body 1, a soil box 2 and a seed box 3 are arranged at the bottom of the drone body 1, and a rotating projection mechanism 4 is located between the soil box 2 and the seed box 3, a driving motor is arranged in the drone body 1 for driving the rotating projection mechanism 4 to rotate, and an extrusion mechanism 5 is arranged in the soil box 2 for extruding soil, and the rotating projection mechanism 4 can scrape a certain amount of soil in the soil box 2 and drive the soil to pass 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 being scattered everywhere;

[0024] The rotary projection mechanism 4 includes a shaft rod 41, the top end of which is connected to a driving motor, which can drive the shaft rod 41 to rotate, a connecting sleeve 42 is provided at the bottom end of the shaft rod 41, a plurality of 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 movable rods 43 can rotate up and down along the hinge axis, a scraper 44 for scraping soil is provided at the other end of the movable rod 43, a tension spring 45 is connected to the middle part of the movable rod 43, the other end of the tension spring 45 is connected to the connecting sleeve 42, and the end of the movable rod 43 can be held against the outer contour of the connecting sleeve 42 under the tension of the tension spring 45;

[0025] A first channel 21 inclined upward is provided at the bottom of the side wall of the soil box 2 facing the rotating projection mechanism 4, and the first channel 21 is communicated with the interior of the soil box 2. A second channel 31 inclined upward is provided at the bottom of the side wall of the seed box 3 facing the rotating projection mechanism 4. Both the first channel 21 and the second channel 31 are provided with an expansion portion 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 communicated. The movable rod 43 can move along the first channel 21 and the second channel 31. A discharge port 32 is provided on the seed box 3, and seeds can fall into the expansion portion 22 of the second channel 31 through the discharge port 32. The discharge port 32 is located below the horizontal line of the expansion portion 22, and the seeds in the expansion portion 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. A guide plate 23 is provided at the bottom of the soil box 2. A lower inclined portion 231 is provided on the side wall of the guide plate 23. The top of the lower inclined portion 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 lower inclined portion 231 of the guide plate 23, so that the tension spring 45 is in a stretched state. With the movement of the movable rod 43, the scraper 44 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 adhere 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 tension of the tension spring 45, and the seed soil particles can be thrown out under the action of inertia, thereby achieving a projection effect. Compared with individual seed particles, the seed soil particles contain heavier soil and are less affected by the wind force of the drone, and can fall down better, so as to be accurately placed in the designated area.

[0027] Specifically, the movable rod 43 includes a connecting rod 431, one end of which 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, and the outer circular contour of the rotating rod 432 is provided with gear teeth 433. The first channel 21 and the second channel 31 are provided with a rack 33 that cooperates 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 by itself under the cooperation of the rack 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 from scraping excess soil. The amount of soil scraped from the scraper 44 each time is limited by the size of the scraper 44, the amount of soil scraped is almost equal, and the soil on the scraper 44 can better adhere to the seeds.

[0028] Specifically, the scraper 44 is in the shape of a semicircular shell, and one end of the scraper 44 away from the rotating rod 432 is open, so as to facilitate the removal of seed soil particles adhering to the seeds.

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

[0030] Specifically, the squeezing mechanism 5 includes an squeezing plate 51 for squeezing soil. The shape of the squeezing plate 51 is consistent with the inner shape of the soil box 2. The top of the squeezing plate 51 is fixedly connected to a multi-stage telescopic screw 52. 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 driving wheel 54 is provided on the shaft 41. The driving 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, and then can simultaneously drive the multi-stage telescopic screw 52 to extend and retract, thereby achieving the ability to squeeze the soil downward while scraping the soil, avoiding the situation where the scraper 44 cannot scrape the soil.

[0031] The method of using the present invention is as follows: soil and seeds are distributed and loaded into the soil box 2 and the seed box 3, the UAV is made to fly to a predetermined altitude, the driving motor is started, and the driving motor drives the rotating projection mechanism 4 to move. Under the guidance of the guide plate 23, the movable rod 43 can enter the first channel 21 along the lower inclined portion 231 of the guide plate 23, and the tension spring 45 can be in a stretched state. With the movement of the movable rod 43, 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. The scraper 44 scrapes the soil. When the taken soil passes through the second channel 31, the seeds in the second channel 31 can adhere to the soil to form seed soil particles. When the movable rod 43 leaves the second channel 31, the movable rod 43 can quickly return to the initial state under the tension of the tension spring 45, and the seed soil particles can be thrown out under the action of inertia, thereby achieving a projection effect. Compared with individual seed particles, the seed soil particles contain heavier soil and are less affected by the wind force of the drone, and can fall down better to avoid the seeds being scattered everywhere, so as to facilitate accurate delivery 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 the present invention. Although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the purpose and scope of the technical solutions of the present invention, which should be included in the scope of the claims of the present invention. The techniques, shapes, and structural parts not described in detail in the present invention are all known technologies.

Claims

1. A drone seed projection device, comprising a drone body (1), characterized in that: A soil box (2), a seed box (3) and a rotating projection mechanism (4) are provided at the bottom of the drone body (1); a driving motor is provided in the drone body (1); a squeezing mechanism (5) is provided in the soil box (2); and the rotating projection mechanism (4) can scrape a certain amount of soil in the soil box (2) and drive the soil to pass through the seed box (3), so that the soil adheres to the seeds to form seed soil particles; The rotary projection mechanism (4) comprises a shaft (41), the top end of the shaft (41) is connected to a driving motor, the bottom end of the shaft (41) is provided with a connecting sleeve (42), a plurality of movable rods (43) are connected to the connecting sleeve (42), the end of the movable rod (43) is hinged to the connecting sleeve (42), the other end of the movable rod (43) is provided with a scraper (44), the middle part of the movable rod (43) is connected to a tension spring (45), the other end of the tension spring (45) is connected to the connecting sleeve (42), and under the tension of the tension spring (45), the end of the movable rod (43) can be supported on the outer contour of the connecting sleeve (42); A first channel (21) inclined upward is provided at the bottom of the side wall of the soil box (2) facing the rotating projection mechanism (4), and the first channel (21) is communicated with the interior of the soil box (2). A second channel (31) inclined upward is provided at the bottom of the side wall of the seed box (3) facing the rotating projection mechanism (4). Both the first channel (21) and the second channel (31) are provided with an expansion portion (22) for the scraper (44) to pass through. The first channel (21) and the second channel (31) are located on the same horizontal plane and are communicated. A discharge port (32) is provided on the seed box (3), and the discharge port (32) is located below the horizontal line of the expansion portion (22). The connecting sleeve (42) is located below the horizontal line of the first channel (21); a guide plate (23) is provided at the bottom of the soil box (2); a lower inclined portion (231) is provided on the side wall of the guide plate (23); the top end of the lower inclined portion (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 lower inclined portion (231) of the guide plate (23).

2. A drone seed projection device according to claim 1, characterized in that: The movable rod (43) comprises a connecting rod (431), one end of which is hinged to the connecting sleeve (42), the other end of which is rotatably connected to a rotating rod (432), the end of which is away from the connecting rod (431) being fixedly connected to the scraper (44), the outer circular profile of which is provided with gear teeth (433), and the first channel (21) and the second channel (31) are provided with racks (33) matching with the gear teeth (433).

3. A drone seed projection device according to claim 1, characterized in that: The scraper (44) is in the shape of a semicircular shell, and one end of the scraper (44) away from the rotating rod (432) is in an open shape.

4. A drone seed projection device according to claim 1, characterized in that: The moisture content of the soil in the soil box (2) is between 25% and 35%.

5. A drone seed projection device according to claim 4, characterized in that: The squeezing mechanism (5) comprises a squeezing plate (51) for squeezing soil, the top of the squeezing plate (51) is fixedly connected to a multi-stage telescopic screw (52), the top of the multi-stage telescopic screw (52) is fixedly connected to the drone body (1), the bottom of the drone body (1) is provided with a transmission wheel (53), the transmission wheel (53) is coaxially connected to the multi-stage telescopic screw (52), the shaft (41) is provided with a driving wheel (54), and the driving wheel (54) is connected to the driving wheel (53) through a chain.

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