Autonomous sowing drone with seed protection device

Abstract

We provide an automatic sowing drone equipped with a seed protection device that improves the survival rate of seeds. [Solution] An automatic sowing drone is disclosed, which includes a storage section 1 and a flying assembly installed on the top of the storage section 1, a fixed frame 9 is fixedly attached inside the storage section 1, a lifting frame is installed inside the lifting frame so that it can slide up and down, a pressing assembly is installed at each of the four corners, two support assemblies are installed symmetrically on both sides of the lifting frame, and a plurality of stacked seed boxes 5 are installed above the two support assemblies, the seed box includes a pressing plate and a plurality of conical tubes for storing seeds fixed to the bottom of the pressing plate, and the seed box is equipped with a seed protection device made of biodegradable material. The seed box is inserted into the land through the support assembly and the pressing assembly by raising and lowering the lifting frame. The seed box provides sufficient nutrients for the seeds to grow.

Description

[Technical field]

[0001] The present invention relates to the technical field of seeding equipment, and more particularly to an automatic seeding drone equipped with a seed protection device. [Background technology]

[0002] Conventional drones for automatic seeding mostly fly the drone and scatter seeds directly into the ground using a scatterer. Seeds grow by absorbing nutrients from the ground. However, when scattering seeds, the scattering is uneven, and some areas lose nutrients, which means some seeds cannot absorb enough nutrients and have difficulty surviving at the seedling stage, resulting in a low seed survival rate. Summary of the Invention

[0003] The purpose of the present invention is to provide an automatic sowing drone equipped with a seed protection device, thereby solving the problem of low seed survival rate that exists in conventional automatic sowing drones.

[0004] To achieve the above objectives, the present invention provides the following technical means: An automatic sowing drone equipped with a seed protection device, The storage section includes a storage section and a flight assembly provided on the top of the storage section, a fixed frame is fixedly attached within the storage section, a lifting frame is provided within the fixed frame so as to be vertically slidable, a pressing assembly is provided at each of the four corners of the lifting frame, two support assemblies are symmetrically attached to both sides of the lifting frame, and a plurality of stacked seed boxes are provided above the two support assemblies; The support assembly includes a support frame fixedly attached to the outside of the lift frame, and two support plates symmetrically and rotatably connected to one side of the support frame; The pressing assembly includes a mounting frame fixedly attached to the outside of the lifting frame, and a rotating plate connected to the mounting frame so as to be horizontally rotatable, and a pressing plate is rotatably connected to an end of the rotating plate; An automatic sowing drone equipped with a seed protection device, wherein the seed box includes a pressure plate and a plurality of conical tubes for storing seeds fixed to the bottom of the pressure plate, the tips of the plurality of conical tubes all point downward, the seed box is made of a biodegradable material, and the pressure plate of the seed box located at the bottom is located between a plurality of support plates and a plurality of pressure plates.

[0005] Preferably, a rotating plate is rotatably mounted on the top of the fixed frame, two moving frames are slidably connected to both sides of the fixed frame, two first links are rotatably connected in one-to-one correspondence between the ends of the two moving frames and the tops of the two mounting frames, the two moving frames are each provided with a slide groove, two fixed rods are fixedly attached to the bottom of the rotating plate, and the two fixed rods slide and engage in the two slide grooves, respectively.

[0006] Preferably, the flight assembly includes a fixed base fixed to the top of the housing and four wings fixedly attached to the outside of the fixed base, the four wings being arranged in a circumferential direction, and a propeller being rotatably mounted on each end of the four wings.

[0007] Preferably, gears are fixedly attached coaxially to each of the two support plates, two slide plates are symmetrically slidably connected within the support frame, and racks are fixedly attached to one side of each of the two slide plates, and the two racks are connected to and mesh with the two gears in a one-to-one correspondence.

[0008] Preferably, a slide bar is slidably connected within the support frame, a stopper is fixedly attached to the top of the slide bar, the bottom of the slide bar extends from the support frame, a bottom plate is fixedly attached to the bottom of the slide bar, a fixed block is fixedly attached to the middle of the slide bar, fourth links are rotatably connected between the fixed blocks and the two slide plates, and a second spring is fixedly attached between the top of the stopper and the support frame.

[0009] Preferably, a guide bar is fixedly attached to the mounting frame, a slide frame is slidably connected to the outside of the guide bar, and a third link is rotatably connected between one end of the slide frame and one side of a rotating plate.

[0010] Preferably, a fixed plate is fixedly attached to the end of the guide bar, two second links are rotatably connected between the other end of the slide frame and the fixed plate, a first spring is fixedly connected between the fixed plate and the slide frame, and the first spring is fitted onto the outside of the guide bar.

[0011] Preferably, a fixed rod is fixedly attached to the fixed frame above each of the second links of each group.

[0012] Preferably, a slider is slidably connected within the rotating plate, a moving rod is fixedly attached to one side of the slider, a guide groove having a spiral structure is opened at the end of the pressure plate, and the moving rod is slidably engaged within the guide groove.

[0013] Preferably, a screw is rotatably connected within the rotating plate, and the screw is threadedly engaged with the slider so as to penetrate therethrough.

[0014] Compared with the prior art, the present invention has the following beneficial effects: (1) In this invention, a seed box is provided. When sowing seeds by a drone, the seeds are placed in the seed box in advance, and the seed box is inserted into the land in sequence through the support assembly and the pressing assembly by raising and lowering the lifting frame. The seed box provides sufficient nutrients for the seeds to grow vigorously. After the seed box is decomposed, the seeds have passed the dangerous seedling stage and can adapt to the land environment of the planting site, improving the survival rate of the seeds.

[0015] (2) In this invention, a slide bar, a stopper, a second spring and a bottom plate are provided. When the support assembly and the pressing assembly insert the seed box into the land, the bottom plate contacts the ground first, and the stopper pushes the slide bar up to compress the second spring. At the same time, the fixed block moves the two racks to the middle through the two slide plates by the two fourth links, and the two gears rotate the two support plates to both sides respectively, so that the support plate does not interfere with the insertion of the lowest seed box into the land. After the seed box is inserted into the land, the lifting frame moves the support frame and the support plate up. The elastic force of the second spring causes the stopper to move the slide bar downward relative to the support frame, so that the fixed block pushes the corresponding slide plates and racks to move to both sides through the two fourth links, and the two support plates gradually rotate back to the middle under the action of the two gears. Since the support plate rotates while rising, the support plate does not affect the seed box inserted in the ground, and the support plate can automatically escape and return, thereby improving efficiency.

[0016] (3) In this invention, a slide frame, a second link, a third link and a first spring are provided. After the seed box is inserted into the land by the support assembly and the pressing assembly, when the lifting frame moves upward relative to the fixed frame, the mounting frame moves the rotating plate and the pressure plate upward, and separates the upper seed box from the seed box inserted into the land. At the same time, the mounting frame moves the slide frame and the fixed plate upward through the guide bar, so that the tops of the two second links approach the fixed rod on the fixed frame, and the tops of the second links cannot move upward due to the fixed rod, so that the two second links push and slide the slide frame, and the slide frame and the fixed plate pull the first spring, and at the same time, the third link at the end of the slide frame pulls and rotates the rotating plate, so that the pressure plate gradually moves to one side of the seed box, and the seed box falls onto the support plate that returns due to gravity. In this case, the lifting frame is moved downward relative to the fixed frame, the sliding frame is gradually returned by the elastic force of the first spring, and the third link also pushes the rotating plate to move the pressure plate above the seed box. This allows the stacked seed boxes to be inserted into the land in sequence, realizing continuous sowing and improving efficiency.

[0017] (4) The release and return of the support plate within the support assembly, and the rotation and return of the rotating plate within the roll-down assembly can be achieved simply by the reciprocating raising and lowering of the lifting frame, without the need for separate independent driving equipment. This results in a compact structure, reduced manufacturing costs for the equipment, reduced weight of the equipment itself, extended drone range, and improved efficiency.

[0018] (5) In this invention, a slider and a guide groove are provided. The slider is moved in the rotating plate by rotating the screw, and the moving rod on one side of the slider is moved in the spiral guide groove to push and rotate the pressure plate. In this way, the distance between the bottom of the pressure plate and the top of the support plate is adjusted to the thickness of the pressure plate of the seed box, so that the pressure plate can push the seed box as far down as possible, and the collision with the seed box inserted in the land can be avoided when the support plate returns, and it can be applied to seed boxes of different thicknesses, so that it is highly practical. [Brief description of the drawings]

[0019] [Figure 1] FIG. 1 is a first perspective view of the present invention. [Diagram 2] FIG. 2 is a second perspective view of the present invention. [Diagram 3] FIG. [Figure 4] FIG. 2 is an assembled perspective view of the fixing frame of the present invention; [Diagram 5] FIG. 2 is a first perspective view of the assembly of the lifting frame of the present invention; [Figure 6] FIG. 2 is a second perspective view of the assembly of the lifting frame of the present invention; [Figure 7] FIG. 2 is a cross-sectional view of the assembly of the support frame of the present invention. [Figure 8] FIG. 2 is a first perspective view of the support plate assembly of the present invention; [Figure 9] FIG. 2 is a second perspective view of the support plate assembly of the present invention; [Figure 10] FIG. 2 is a first perspective view of the assembly of the mounting frame of the present invention; [Figure 11] FIG. 2 is a second perspective view of the assembly of the mounting frame of the present invention; [Figure 12] FIG. 2 is a cross-sectional view of the rotating plate assembly of the present invention. [Figure 13] FIG. 2 is a perspective view of the pressure plate assembly of the present invention;

[0020] Explanation of symbols 1--accommodating part, 2--fixed seat, 3--wing, 4--propeller, 5--seed box, 6--fixed rod, 7--slide frame, 8--mounting frame, 9--fixed frame, 10--guide bar, 11--first link, 12--turntable, 13--moving frame, 14--lifting frame, 15--support plate, 16--bottom plate, 17--support frame, 18--fixed rod, 19--fixed plate, 20--first spring, 21--second link, 22--third link, 23--turntable, 24--pressure plate, 25--slide plate, 26--gear, 27--rack, 28--screw, 29--slide bar, 30--fourth link, 31--stopper, 32--second spring, 33--fixed block, 34--slider, 35--guide groove. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0021] The technical means in the embodiments of the present invention will be described below clearly and completely with reference to the drawings in the embodiments of the present invention. It is obvious that the following embodiments are only a part of the embodiments of the present invention, and are not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts are all within the scope of protection of the present invention.

[0022] As shown in Figures 1 to 13, the technical means provided in the present invention are as follows: The automatic sowing drone equipped with a seed protection device includes a storage section 1 and a flight assembly provided on the top of the storage section 1. A fixed frame 9 is fixedly attached within the storage section 1. A lifting frame 14 is provided within the fixed frame 9 so as to be able to slide up and down. A pressing assembly is provided at each of the four corners of the lifting frame 14. Two support assemblies are symmetrically attached to both sides of the lifting frame 14. A plurality of stacked seed boxes 5 are provided above the two support assemblies. The support assembly includes a support frame 17 fixedly attached to the outside of the lift frame 14, and two support plates 15 symmetrically and rotatably connected to one side of the support frame 17; The pressing assembly includes a mounting frame 8 fixedly attached to the outside of the lifting frame 14, and a rotating plate 23 connected to the mounting frame 8 so as to be horizontally rotatable. A pressing plate 24 is rotatably connected to an end of the rotating plate 23. The seed box 5 includes a press plate and a number of conical tubes for storing seeds fixed to the bottom of the press plate, with the tips of the conical tubes all pointing downward. The seed box 5 is made of a biodegradable material, and the press plate of the seed box 5 located at the bottom is located between a number of support plates 15 and a number of pressure plates 24.

[0023] According to the above structure, the process of drone sowing is as follows: First, the seeds are placed in the conical tubes in the seed boxes 5. The nutrients in the conical tubes are enough for the seeds to go through the seedling stage. The seed boxes 5 are stacked and arranged in the fixed frame 9 in the storage unit 1, and the stacked seed boxes 5 are supported by supporting the pressing plate of the lowest seed box 5 with the support plates 15. The rotating plate 23 is rotated to move the pressure plate 24 above the pressing plate of the lowest seed box 5, and then the flight assembly moves the storage unit 1 above the land to be sown, whereby the fixed frame 9 and the lifting frame 14 move the support assembly, the pressing assembly, and the stacked seed boxes 5 above the land to be sown. As the flying assembly moves downward, the storage section 1 moves the fixed frame 9 and the lifting frame 14 downward, causing the multiple pressure plates 24 of the pressing assembly to push the lowest seed box 5 so as to insert it into the land, while at the same time the support plate 15 of the support assembly rotates to move out from below the seed box 5 so as not to interfere with the insertion of the seed box 5 into the land. After the lowest seed box 5 is inserted into the land, the flight assembly is operated to move the storage unit 1 upward, whereby the fixed frame 9 moves the lifting frame 14 to move the support assembly and the pressing assembly upward, whereby the multiple rotating plates 23 and the pressing plate 24 separate the upper seed box 5 from the seed box 5 inserted into the land, and at the same time, the multiple support plates 15 of the support assembly rotate again to below the seed box 5 in the storage unit 1. Then, due to the rotation of the multiple rotating plates 23, the multiple rotating plates 23 and the multiple pressing plates 24 rotate outward from below the seed box 5, and the seed box 5 falls onto the multiple support plates 15 below by gravity. Then, by rotating the multiple rotating plates in the opposite direction, the multiple rotating plates 23 and the multiple pressing plates 24 rotate to above the seed box 5 supported by the support plate 15. Furthermore, the container 1 and the seed boxes 5 therein are moved by the flying assembly in sequence above the land to be sown, and the above sowing process is repeated. In this way, the stacked seed boxes 5 are inserted in sequence into the land to achieve continuous sowing.

[0024] Preferably, sufficient nutrients are provided for the growth of the seeds in the seedling stage in the seed box 5. After the seed box 5 decomposes, the seeds in the seed box 5 have already passed the dangerous seedling stage and can adapt to the land environment of the planting site, improving the survival rate of the seeds.

[0025] As for the flying assembly, preferably, the flying assembly includes a fixed base 2 fixed to the top of the storage section 1, and four wings 3 fixedly attached to the outside of the fixed base 2. The four wings 3 are arranged in the circumferential direction, and a propeller 4 is rotatably provided at the end of each of the four wings 3. As a result, in the flight of the flying assembly, the rotational frequency of each of the four propellers 4 is controlled to control the lift caused by the rotation of each of the four propellers 4, thereby driving the tilt and elevation of the four wings 3 and the fixed base 2, thereby realizing the horizontal movement, ascent and descent of the flying assembly, and thereby causing the storage section 1 to fly.

[0026] For the rotation of the support plate 15 and the rotating plate 23, the following structure is preferably provided. Gears 26 are fixedly attached coaxially to each of the two support plates 15, and two slide plates 25 are connected symmetrically and slidably within the support frame 17. A rack 27 is fixedly attached to one side of each of the two slide plates 25, and the two racks 27 are connected to and mesh with the two gears 26 in a one-to-one correspondence. A slide bar 29 is slidably connected within the support frame 17, a stopper 31 is fixedly attached to the top of the slide bar 29, the bottom of the slide bar 29 extends from the support frame 17, a bottom plate 16 is fixedly attached to the bottom of the slide bar 29, a fixed block 33 is fixedly attached to the middle of the slide bar 29, a fourth link 30 is rotatably connected between the fixed block 33 and each of the two slide plates 25, and a second spring 32 is fixedly attached between the top of the stopper 31 and the support frame 17.

[0027] As can be seen from the above, when the storage unit 1 moves the fixed frame 9 and the lifting frame 14 downward to insert the seed box 5 into the ground as the flight assembly moves downward, the tip of the conical tube at the bottom of the seed box 5 is inserted into the ground until the bottom of the storage unit 1 hits the ground. Then, the lifting frame 14 continues to move downward within the fixed frame 9, and the bottom plate 16 below the support frame 17 hits the ground first. As the lifting frame 14 continues to move downward, the bottom plate 16 pushes the slide bar 29 to the support frame 17. 17, the stopper 31 at the top of the slide bar 29 and the support frame 17 compress the second spring 32, and at the same time, the slide bar 29 moves the fixed block 33 in the middle upward in the support frame 17, so that the two slide plates 25 are moved to the middle by the two fourth links 30, and thus the two racks 27 are moved to the middle, and the two gears 26 rotate the two support plates 15 to both sides by the meshing transmission of the two racks 27 and the two gears 26. As a result, the two support plates 15 have already rotated outward from below the seed boxes 5 before the bottom of the lifting frame 14 comes into contact with the ground, so that the insertion of the lowest seed box 5 into the land is not hindered.

[0028] After the lowest seed box 5 is inserted into the land, the lifting frame 14 is lifted within the fixed frame 9. As the lifting frame 14 rises, the support frame 17 and the multiple support plates 15 rise. The elastic force of the second spring 32 causes the stopper 31 to push the slide bar 29 gradually downward, so that the fixed block 33 pushes the two slide plates 25 by the two fourth links 30 to slide the two racks 27 to both sides, and then the two gears 26 rotate the two support plates 15 to the middle until the bottom plate 16 is released from the ground, thereby achieving the return of the support plates 15. During this process, the support plates 15 are in a state of rotating while rising, and when the edge of the support plate 15 rotates to the edge of the seed box 5, the support plate 15 is located above the seed box 5 already inserted into the land. This achieves the automatic escape and return of the support plates. Then, as the flight assembly raises the container 1, the fixed frame 9 and the lifting frame 14 move the other seed box 5 to the next sowing position.

[0029] Regarding the rotation of the rotating plate 23, the following structure is preferably provided. A guide bar 10 is fixedly attached to the mounting frame 8, a slide frame 7 is slidably connected to the outside of the guide bar 10, and a third link 22 is rotatably connected between one end of the slide frame 7 and one side of the rotating plate 23. A fixed plate 19 is fixedly attached to the end of the guide bar 10, two second links 21 are rotatably connected between the other end of the slide frame 7 and the fixed plate 19, and a first spring 20 is fixedly connected between the fixed plate 19 and the slide frame 7, and the first spring 20 is fitted onto the outside of the guide bar 10. A fixed rod 6 is fixedly attached to the fixed frame 9 above each group of second links 21.

[0030] As can be seen from the above, after the lowest seed box 5 is inserted into the land, when the lifting frame 14 rises within the fixed frame 9, the pressure plate 24 and the rotating plate 23 rise to abut against the bottom of the upper seed box 5. As the lifting frame 14 continues to rise, the upper seed box 5 gradually separates from the seed box 5 inserted into the land, while the mounting frame 8 on the lifting frame 14 gradually approaches the fixed rod 6 on the fixed frame 9. As a result, the guide bar 10 brings the slide frame 7 and the fixed plate 19 closer to the fixed rod 6, and after the tops of the two second links 21 between the slide frame 7 and the fixed plate 19 abut against the tops of the fixed rod 6, the lifting frame 14 continues to rise inside the fixed frame 9, so that the guide bar 10 and the fixed rod 6 press the two second links 21, and one second link 21 pushes the slide frame 7 to slide outside the guide bar 10, while pulling the first spring 20, and the end of the slide frame 7 pulls the rotating plate 23 through the third link 22 to rotate horizontally on the mounting frame 8. As a result, the pressure plate 24 rotates and moves outside the seed box 5, and as a result, the rotating plate 23 and the pressure plate 24 no longer support the upper seed box 5, and the upper seed box 5 falls onto the returned multiple support plates 15 below due to gravity. Then, by lowering the lifting frame 14 within the fixed frame 9, the mounting frame 8 and the guide bar 10 are separated from the fixed rod 6 under the action of the lifting frame 14, and the sliding frame 7 moves on the guide bar 10 toward the fixed plate 19 under the action of the elastic force of the pulled first spring 20, and the end of the sliding frame 7 pushes the rotating plate 23 to rotate by the third link 22, and the pressure plate 24 moves above the seed box 5 currently supported by the support plate 15 due to the action of the rotating plate 23. By repeating the above sowing operation in this way, the stacked seed boxes 5 can be inserted into the land in order, realizing continuous sowing and improving efficiency.

[0031] For the vertical movement of the lifting frame 14 within the fixed frame 9, a rotating platen 12 is rotatably provided on the top of the fixed frame 9, two moving frames 13 are slidably connected to both sides of the fixed frame 9, two first links 11 are rotatably connected in one-to-one correspondence between the ends of the two moving frames 13 and the tops of the two mounting frames 8, a slide groove is provided on each of the two moving frames 13, two fixed rods 18 are fixedly attached to the bottom of the rotating platen 12, and the two fixed rods 18 slide-engage in the two slide grooves, respectively. As a result, by driving the rotation of the rotating platen 12 to rotate the two fixed rods 18 around the axis of the rotating platen 12, the two fixed rods move the two moving frames 13 relatively within the fixed frame 9 via the two slide grooves, thereby moving one end of the two first links 11 relatively. When the angle between the first links 11 and the horizontal direction becomes larger, the other ends of the two first links 11 push the lifting frame 14 via the two mounting frames 8 to move it downward. Conversely, when the angle between the first links 11 and the horizontal direction becomes smaller, the other ends of the two first links 11 pull the lifting frame 14 via the two mounting frames 8 to move it upward.

[0032] Furthermore, for the rotational adjustment of the pressure plate 24, the following structure is preferably provided. A slider 34 is slidably connected within the rotating plate 23, and a moving rod is fixedly attached to one side of the slider 34. A guide groove 35 having a spiral structure is opened at the end of the pressure plate 24, and the moving rod slides and engages within the guide groove 35. A screw 28 is rotatably connected within the rotating plate 23, and the screw 28 is screwed into a slider 34 so as to penetrate therethrough.

[0033] As can be seen from the above, the slider 34 screwed to the link of the screw 28 is slid within the rotary plate 23 by rotating the screw 28 on one side of the rotary plate 23, and at the same time, the moving rod on one side of the slider 34 is slid within the spiral guide groove 35 at the end of the pressure plate 24, causing the pressure plate 24 to rotate at the end of the rotary plate 23. This allows the distance between the bottom of the pressure plate 24 and the top of the support plate 15 to be adjusted to the thickness of the pressure plate of the seed box 5, so that the pressure plate 24 can push the seed box 5 as far down as possible, and can avoid collision with the seed box 5 inserted into the land when the lifting frame 14 rises and the support plate 15 returns, and can be applied to seed boxes 5 of different thicknesses, making it highly practical.

[0034] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled 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. The scope of the present invention is limited by the appended claims and their equivalents.

Claims

1. An automatic sowing drone equipped with a seed protection device, The storage unit (1) includes a storage section (1) and a flight assembly provided on the top of the storage section (1), a fixed frame (9) is fixedly attached within the storage section (1), a lifting frame (14) is provided within the fixed frame (9) so as to be vertically slidable, a pressing assembly is provided at each of the four corners of the lifting frame (14), two support assemblies are symmetrically attached to both sides of the lifting frame (14), and a plurality of stacked seed boxes (5) are provided above the two support assemblies; The support assembly includes a support frame (17) fixedly attached to the outside of the lifting frame (14) and two support plates (15) symmetrically and rotatably connected to one side of the support frame (17); The pressing assembly includes a mounting frame (8) fixedly mounted on the outside of the lifting frame (14), and a rotating plate (23) horizontally rotatably connected to the mounting frame (8), and a pressing plate (24) is rotatably connected to an end of the rotating plate (23); The seed box (5) includes a pressure plate and a plurality of conical tubes for storing seeds fixed to the bottom of the pressure plate, the tips of the plurality of conical tubes all point downward, the seed box (5) is made of a biodegradable material, and the pressure plate of the seed box (5) located at the bottom is located between a plurality of support plates (15) and a plurality of pressure plates (24).

2. The automatic sowing drone equipped with the seed protection device of claim 1, characterized in that: a rotating plate (12) is rotatably mounted on the top of the fixed frame (9), two moving frames (13) are slidably connected to both sides of the fixed frame (9), two first links (11) are rotatably connected in one-to-one correspondence between the ends of the two moving frames (13) and the tops of the two mounting frames (8), each of the two moving frames (13) is provided with a slide groove, two fixed rods (18) are fixedly attached to the bottom of the rotating plate (12), and the two fixed rods (18) are slidably engaged in the two slide grooves, respectively.

3. The automatic sowing drone equipped with the seed protection device described in claim 1, characterized in that the flying assembly includes a fixed base (2) fixed to the top of the accommodating section (1) and four wings (3) fixedly attached to the outside of the fixed base (2), the four wings (3) being arranged circumferentially, and a propeller (4) being rotatably mounted on each end of the four wings (3).

4. The automatic sowing drone equipped with the seed protection device described in claim 1, characterized in that a gear (26) is fixedly attached coaxially to each of the two support plates (15), two slide plates (25) are symmetrically and slidably connected within the support frame (17), a rack (27) is fixedly attached to one side of each of the two slide plates (25), and the two racks (27) are meshed and connected to the two gears (26) in a one-to-one correspondence.

5. 2. The automatic sowing drone equipped with the seed protection device according to claim 1, characterized in that a slide bar (29) is slidably connected within the support frame (17), a stopper (31) is fixedly attached to the top of the slide bar (29), a bottom of the slide bar (29) extends from the support frame (17), a bottom plate (16) is fixedly attached to the bottom of the slide bar (29), a fixed block (33) is fixedly attached to the middle of the slide bar (29), a fourth link (30) is rotatably connected between the fixed block (33) and the two slide plates (25), and a second spring (32) is fixedly attached between the top of the stopper (31) and the support frame (17).

6. The automatic sowing drone equipped with the seed protection device described in claim 1, characterized in that a guide bar (10) is fixedly attached to the mounting frame (8), a slide frame (7) is slidably connected to the outside of the guide bar (10), and a third link (22) is rotatably connected between one end of the slide frame (7) and one side of a rotating plate (23).

7. The automatic sowing drone equipped with the seed protection device described in claim 6, characterized in that a fixed plate (19) is fixedly attached to the end of the guide bar (10), two second links (21) are rotatably connected between the other end of the slide frame (7) and the fixed plate (19), a first spring (20) is fixedly connected between the fixed plate (19) and the slide frame (7), and the first spring (20) is externally fitted to the outside of the guide bar (10).

8. An automatic sowing drone equipped with a seed protection device as described in claim 7, characterized in that a fixed rod (6) is fixedly attached above each group of second links (21) on the fixed frame (9).

9. The automatic sowing drone equipped with the seed protection device of claim 1, characterized in that a slider (34) is slidably connected within the rotating plate (23), a moving rod is fixedly attached to one side of the slider (34), a spiral guide groove (35) is opened at the end of the pressure plate (24), and the moving rod slides into and engages with the guide groove (35).

10. 10. An automatic sowing drone equipped with a seed protection device as described in claim 9, characterized in that a screw (28) is rotatably connected within the rotating plate (23) and the screw (28) is screwed through a slider (34).

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