Airborne granular fertilizer spraying device of unmanned aerial vehicle

Abstract

The invention discloses an unmanned aerial vehicle-mounted granular fertilizer spraying device, and belongs to the technical field of unmanned aerial vehicle spraying devices.The unmanned aerial vehicle-mounted granular fertilizer spraying device comprises an unmanned aerial vehicle body, a granule carrying bin is arranged in the unmanned aerial vehicle body, a plurality of movable discs are arranged in an inner cavity of the granule carrying bin, and a plurality of material scattering rods are symmetrically arranged on the peripheries of the movable discs; supporting shafts are arranged among the interiors of the multiple movable discs, the supporting shafts and the movable discs are in sliding connection through first connecting assemblies, adjusting mechanisms used for driving the supporting shafts to reciprocate up and down are arranged at the tops of the movable discs, and a plurality of ground supporting rods are fixedly connected to the bottom end of the unmanned aerial vehicle body; the grain carrying bin and the ground supporting rod are fixedly connected through a second connecting assembly and a third connecting assembly. According to the invention, the plurality of movable discs are matched with the material scattering rods, the movable discs move up and down to incline the material scattering rods, and the material leakage holes of the material scattering rods with different lengths can be arranged into a non-repeated linear area after being inclined, so that the repeated spraying of a fertilizer is avoided, and the fertilization uniformity is improved.

Description

Technical Field

[0001] The invention relates to the technical field of unmanned aerial vehicle spraying devices, in particular to an unmanned aerial vehicle airborne granular fertilizer spraying device. Background Art

[0002] With the development of science and technology, the application of drones in the agricultural field has gradually attracted attention. Drones have the advantages of flexibility, high efficiency, and no terrain restrictions. In agricultural plant protection and other aspects, drones have shown great potential. In the field of agricultural production, urea and other granular fertilizers need to be applied. Agricultural drones spray granular formulations such as urea. At present, there is a lack of relevant vehicles, and it is impossible to achieve a wide range of spraying, and it is impossible to adjust the width and particle spraying density. Therefore, a vehicle with a reasonable structure is needed;

[0003] A Chinese patent discloses a particle spraying device carried by a drone (authorization announcement number CN107873197A), which uses an auger to transport granular objects, and controls the speed of the auger by adjusting the speed of the reduction motor, thereby achieving quantitative control of the transport flow of the granular objects; the centrifugal spray curtain shaping assembly makes the spraying angle of the granular objects larger and controllable, so that when the drone sprays the granular objects, the spray width is larger and more flexible, and the agricultural plant protection operation is completed more quickly; the spraying of granular objects and the transport flow of granular objects are controlled, which is simple and easy to use; but It is difficult to accurately control the distribution of fertilizers in this patent when in use, which easily leads to repeated fertilization in the same area, resulting in fertilizer waste and unbalanced soil nutrients. At the same time, during the fertilization process, as the amount of fertilizer in the particle loading bin changes, the device cannot adjust the fertilization range and uniformity well, resulting in unstable fertilization effect. In addition, during the fertilization process, the fertilizer particles may condense into blocks or block the discharge port of the fertilization equipment due to excessively large particles, thereby causing the fertilization operation to be interrupted, thereby affecting the fertilization effect and efficiency. Therefore, the present invention provides a drone-mounted granular fertilizer spraying device to solve the above-mentioned problems. Summary of the invention

[0004] The purpose of the present invention is to provide a granular fertilizer spraying device carried by an unmanned aerial vehicle to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A granular fertilizer spraying device mounted on an unmanned aerial vehicle comprises an unmanned aerial vehicle body, a granular storage bin is arranged inside the unmanned aerial vehicle body, a feeding cylinder is fixedly connected to the side of the granular storage bin, a plurality of movable disks are arranged in the inner cavity of the granular storage bin, a plurality of spreading rods are symmetrically arranged on the periphery of the movable disk, a plurality of leakage holes are opened on the outer wall of the spreading rod, a supporting shaft is arranged between the interiors of the plurality of movable disks, a sliding connection is achieved between the supporting shaft and the movable disk via a first connecting assembly, an adjusting mechanism for driving the supporting shaft to reciprocate up and down is arranged on the top of the movable disk, a plurality of ground supporting rods are fixedly connected to the bottom end of the unmanned aerial vehicle body, and a fixed connection is achieved between the granular storage bin and the ground supporting rods via a second connecting assembly and a third connecting assembly;

[0007] A side plate is provided on the periphery of one end of the spreading rod, and the side plate is fixedly sleeved on the opposite side of the grain loading bin, and the side plate and the spreading rod are rotatably connected via a first rotating rod, and a first connecting plate is fixedly sleeved on one end of the spreading rod close to the movable disk, and an end of the first connecting plate away from the spreading rod is rotatably sleeved on the side of the movable disk via a second rotating rod, and a third rotating rod is fixedly connected to the inner cavity of one end of the spreading rod close to the movable disk, and a plurality of centrifugal wheels are rotatably sleeved on the periphery of the third rotating rod, and by providing the centrifugal wheels, the capacity entering the interior of the spreading rod can be automatically controlled.

[0008] As a further solution of the present invention, the first connecting assembly includes a first support rod, one end of the first support rod is rotatably sleeved with a first fixed rod, both ends of the first fixed rod are fixedly connected with second connecting blocks, the second connecting block is fixedly connected to the inner wall of the movable disk, the other end of the first support rod is rotatably sleeved with a second fixed rod, the second fixed rod is slidably sleeved in the side inner cavity of the support shaft, and both ends of the second fixed rod are fixedly connected with a limiting slider.

[0009] As a further solution of the present invention, a first clamping block is fixedly sleeved on the periphery of the spreading rod, a first connecting rod is fixedly connected to the outer wall of the first clamping block, a fourth rotating rod is rotatably sleeved on the inner cavity of one end of the first connecting rod away from the first clamping block, both ends of the fourth rotating rod are fixedly connected to the first connecting block, the first connecting block is fixedly installed on the side of the side plate, and the deflection of the spreading rod can be connected and limited by the first clamping block and the first connecting rod.

[0010] As a further solution of the present invention, the adjustment mechanism includes an eccentric shaft, the eccentric shaft is located inside the particle loading bin and is rotatably connected to both sides of the inner cavity of the particle loading bin, a motor is fixedly installed on the side of the particle loading bin, the output shaft of the motor is fixedly connected to one end of the eccentric shaft, the outer periphery of the eccentric shaft is rotatably sleeved with a first connecting rod, the top of the first connecting rod is provided with an airbag, the inner cavity at the bottom end of the airbag is fixedly connected with a fourth fixing rod, the outer periphery of the fourth fixing rod is rotatably connected to the bottom end of the first connecting rod, and the bottom of the first connecting rod is fixedly connected to the top of the support shaft. With the cooperation of the airbag and the first connecting rod, the support shaft can move up and down.

[0011] As a further scheme of the present invention, the top of the airbag is fixedly connected to a concave frame, and the inner cavities at both ends of the concave frame are slidably connected to a third fixed rod, the outer periphery of the third fixed rod is fixedly sleeved with a supporting connecting rod, and the bottom end of the supporting connecting rod is rotatably sleeved with the outer periphery of the eccentric shaft. Two baffles are provided on the top of the airbag, and the baffles are fixedly installed on the top of the inner cavity of the particle loading bin, and the baffles are symmetrically arranged on the top of the inner cavity of the particle loading bin, and a third connecting block is provided between the two baffles, and the outer periphery of the third connecting block is fixedly connected to the two baffles by a connecting rope, and the third connecting block is fixedly sleeved on the outer periphery of the top of the concave frame, and the expansion and contraction of the airbag can drive the concave frame to move up and down without affecting the position of the adjusting mechanism.

[0012] As a further scheme of the present invention, the first connecting assembly includes a first sleeve, which is fixedly installed on the periphery of the bottom end of the ground supporting rod by a first bolt, a side of the first sleeve is fixedly connected to a first universal ball, a periphery of the first universal ball is movably connected to a first supporting rod, a side of the first supporting rod is fixedly connected to a second connecting plate, an inner cavity at one end of the second connecting plate is provided with a protrusion, the protrusion is fixedly installed on the outer wall of the bottom end of the grain loading bin, a first clamping plate is symmetrically provided on the periphery of the protrusion, the first clamping plate is fixedly installed in the inner cavity at one end of the second connecting plate, the two first clamping plates clamp and fix the protrusion through a limit block, and the connection and fixation between the grain loading bin and the ground supporting rod can be achieved through the mutual cooperation of the first sleeve and the first universal ball.

[0013] As a further solution of the present invention, the top of the other end of the second connecting plate is rotatably connected to a second bolt, and the bottom outer periphery of the second bolt is rotatably sleeved with a sliding block, the sliding block is slidably connected to the left end of the second connecting plate, and the side of the sliding block is symmetrically provided with two groups of rotating connecting rods, one end of the rotating connecting rod is rotatably connected to the side of the second connecting plate, the other end of the rotating connecting rod is rotatably connected to the side of the sliding block, the side of the rotating connecting rod is rotatably connected to a second clamping plate, and the end of the second clamping plate away from the rotating connecting rod abuts against the side of the first clamping plate.

[0014] As a further solution of the present invention, the second connecting component includes a second sleeve, which is fixed to the outer periphery of the top end of the ground supporting rod by a third bolt, and the side of the second sleeve is fixedly connected to a second universal ball, and the bottom end of the second universal ball is fixedly connected to a second support rod, and the bottom end of the second support rod is fixedly installed on the top of the baffle. With the mutual cooperation of the second sleeve and the second universal ball, the second connecting component can achieve multi-angle connection requirements and improve the adaptability of the first connecting component.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. When the present invention is used, a plurality of movable disks cooperate with the spreading rod, and the movable disks move up and down to tilt the spreading rod. The leakage holes of the spreading rods of different lengths can be arranged into a non-repetitive linear area after tilting, thereby avoiding repeated spraying of fertilizers and improving the uniformity of fertilization. When the fertilizer in the grain bin is reduced, the discharge of the lowest movable disk can be controlled under the action of the centrifugal wheel, thereby enhancing the uniformity of fertilization. Moreover, the movable disk moves up and down to squeeze and crush the condensed fertilizer, prevent blockage, and ensure the continuity of spraying.

[0017] 2. When the present invention is used, an adjustment mechanism is set up, and the eccentric shaft is driven to rotate by a motor, and the support shaft is driven to be lifted and lowered under the action of the first connecting support rod, thereby driving the movable disk and the spreading rod to be adjusted and deflected. The reciprocating motion of the first connecting support rod can make the airbag expand and drive the concave frame to lift, and the concave frame slides on the supporting connecting rod and is limited by the third connecting block and the connecting rope. It can only move up and down and will not fall off, thereby ensuring the stability and reliability of the structure during operation, which is conducive to the stable implementation of subsequent fertilization operations.

[0018] 3. When the present invention is used, by setting the second connecting component and the third connecting component, with the cooperation between the first universal ball and the first support rod, and the second universal ball and the second support rod, the first jacket and the second jacket are fixed to the periphery of the ground support rod, thereby realizing the connection and fixation between the grain loading bin and the ground support rod, so that the grain loading bin can stably move and fertilize when the UAV is flying. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The figure is a schematic diagram of the overall structure of a UAV-mounted granular fertilizer spraying device.

[0020] Figure 2 The present invention is a structural diagram of the installation position of a granule loading bin in a granular fertilizer spraying device carried by a drone.

[0021] Figure 3 The present invention is a cross-sectional view of the internal structure of a granule loading bin in a granular fertilizer spraying device carried by a drone.

[0022] Figure 4 The present invention is a front view of the connection relationship between a movable disk and a spreading rod in a granular fertilizer spraying device carried by a drone.

[0023] Figure 5 The present invention is a side view of the connection relationship between a movable disk and a spreading rod in a granular fertilizer spraying device carried by a drone.

[0024] Figure 6 A granular fertilizer spraying device mounted on a drone Figure 5 A magnified view of the structure in the middle.

[0025] Figure 7 The present invention is a cross-sectional view of the internal structure of a spreading rod in a granular fertilizer spraying device carried by a drone.

[0026] Figure 8 The present invention is a schematic diagram of the connection relationship of the first connection component in a granular fertilizer spraying device carried by a UAV.

[0027] Fig. 9 The present invention is a structural diagram of an adjusting mechanism in a granular fertilizer spraying device carried by a UAV.

[0028] Fig.10 A granular fertilizer spraying device mounted on a drone Fig. 9 Enlarged view of the structure at point B in the middle.

[0029] Fig.11 The present invention is a structural diagram of the connection between the ground support rod and the grain loading bin in a granular fertilizer spraying device carried by a drone.

[0030] Fig.12 A granular fertilizer spraying device mounted on a drone Fig.11 Enlarged view of the structure at point C in the middle.

[0031] Fig.13 A granular fertilizer spraying device mounted on a drone Fig.11 Enlarged view of the structure at point D in the middle.

[0032] In the figure: 1. drone body; 2. particle loading bin; 3. ground support rod; 4. material spreading rod; 5. feeding barrel; 6. baffle plate; 7. supporting shaft; 8. motor; 9. movable plate; 10. limiting rod; 11. first connecting plate; 12. side plate; 13. first clamping block; 14. second rotating rod; 15. convex plate; 16. threaded bolt; 17. first connecting rod; 18. first connecting block; 19. fourth rotating rod; 20. material leakage hole; 21. first rotating rod; 22. centrifugal wheel; 23. third rotating rod; 24. limiting sliding rod; 25. gravity ball; 26. first supporting rod; 27. limiting sliding block; 28. second fixing rod; 29. ​​second connecting block; 30. The first fixed rod; 31. The eccentric shaft; 32. The rotating block; 33. The concave frame; 34. The third connecting block; 35. The connecting rope; 36. The third fixed rod; 37. The supporting connecting rod; 38. The airbag; 39. The first connecting support rod; 40. The fourth fixed rod; 41. The protrusion; 42. The second connecting plate; 43. The first clamping plate; 44. The limit block; 45. The second clamping plate; 46. The sliding block; 47. The second bolt; 48. The rotating connecting rod; 49. The first supporting rod; 50. The first universal ball; 51. The first jacket; 52. The first bolt; 53. The second jacket; 54. The second supporting rod; 55. The second universal ball; 56. The third bolt. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] Example 1: Please refer to Figure 1 - Fig.13In an embodiment of the present invention, a granular fertilizer spraying device carried by an unmanned aerial vehicle comprises an unmanned aerial vehicle body 1, a granular storage bin 2 is arranged inside the unmanned aerial vehicle body 1, a feeding barrel 5 is fixedly connected to the side of the granular storage bin 2, a sealing cover is rotatably connected to the end of the feeding barrel 5 away from the granular storage bin 2 by a thread, and the interior of the feeding barrel 5 can be protected by the sealing cover to prevent the entry of dust and the overflow of fertilizer, a plurality of movable disks 9 are arranged in the inner cavity of the granular storage bin 2, the diameters of the plurality of movable disks 9 are different, and two adjacent movable disks 9 are fixedly connected by a limiting rod 10, so as to limit the distance between each movable disk 9, and at the same time facilitate the entry of fertilizer into the interior of the movable disk 9, and the top of the movable disk 9 The end inner cavity is an inclined surface. When the fertilizer enters the top inner cavity of the movable disk 9, the fertilizer can roll, so that the fertilizer can flow out automatically. Two groups of spreading rods 4 are symmetrically arranged on the periphery of each group of movable disks 9. The outer wall of the spreading rod 4 is provided with a plurality of leakage holes 20. A support shaft 7 is arranged between the interiors of the plurality of movable disks 9. The support shaft 7 and the movable disk 9 are slidably connected by a first connecting assembly. An adjusting mechanism for driving the support shaft 7 to reciprocate up and down is arranged on the top of the movable disk 9. A plurality of ground supporting rods 3 are fixedly connected to the bottom end of the drone body 1. The grain loading bin 2 and the ground supporting rod 3 are fixedly connected by a second connecting assembly and a third connecting assembly.

[0035] Specifically, the lengths of the plurality of spreading rods 4 are different, and the positions of the leakage holes 20 are different. The same position of different spreading rods 4 will not overlap. The spreading rods 4 are staggered with each other, and when the spreading rods 4 are deflected, the plurality of spreading rods 4 will present multiple layers, and the multiple leakage holes 20 will form a straight line in space, so that the fertilizer is linearly distributed when it flows out, thereby increasing the range of fertilizer spraying, avoiding repeated fertilization of a certain position during the falling process, and improving the uniformity of fertilization;

[0036] Specifically, a limit slide bar 24 is inside the longer spreading rod 4, and a gravity ball 25 is slidably connected to the periphery of the limit slide bar 24. Since the leakage holes 20 opened in the longer spreading rod 4 are at a longer distance, the movement distance of the fertilizer is longer. In order to ensure the simultaneous discharge of fertilizers in several spreading rods 4, when the spreading rods 4 are deflected at the same time, the gravity ball 25 inside the longer spreading rod 4 will slide on the periphery of the limit slide bar 24, thereby accelerating the tilting speed of the longer spreading rod 4, so that the longer spreading rod 4 can keep synchronous tilt with the shorter spreading rod 4, thereby realizing synchronous feeding, avoiding the occurrence of spraying gaps and uneven spraying;

[0037] See also Figure 4 , Figure 5 , Figure 6 and Figure 7A side plate 12 is arranged on the periphery of one end of the spreading rod 4, and the side plate 12 is fixedly sleeved on the opposite side of the grain loading bin 2. The side plate 12 and the spreading rod 4 are rotatably connected through a first rotating rod 21. A plurality of spreading rods 4 are linearly distributed and arranged on the side of the side plate 12. The end of the spreading rod 4 close to the movable disk 9 is fixedly sleeved with a first connecting plate 11, and the end of the first connecting plate 11 away from the spreading rod 4 is rotatably sleeved on the side of the movable disk 9 through a second rotating rod 14. The inner cavity of the end of the spreading rod 4 close to the movable disk 9 is fixedly connected with a third rotating rod 23, and a plurality of centrifugal wheels 22 are rotatably sleeved on the periphery of the third rotating rod 23. The fertilizer is fed into the feeder through the first connecting plate 11 at one time. When entering the interior of the spreading rod 4, it will pass through the centrifugal wheel 22. When the spreading rod 4 is deflected, the centrifugal wheel 22 will also deflect accordingly. Therefore, the centrifugal wheel 22 can not only play the role of feeding, but also control the amount of fertilizer entering at one time, so that the fertilizer is temporarily stored in the mutually socketed part of the spreading rod 4 and the centrifugal wheel 22, and is transported under the action of the centrifugal wheel 22, thereby reducing the transportation distance of the fertilizer. When the spreading rod 4 is deflected, the stored part of the fertilizer will be transported and discharged first, and the temporary storage position will be continuously supplemented with fertilizer under the action of the movable disk 9 and the first connecting plate 11, thereby reducing the transportation distance of the fertilizer and improving the continuous effect of fertilizer spraying.

[0038] See also Figure 8 The first connecting assembly includes a first support rod 26, which is located between the support shaft 7 and the movable disk 9. One end of the first support rod 26 is rotatably sleeved with a first fixed rod 30, and both ends of the first fixed rod 30 are fixedly connected with second connecting blocks 29, and the second connecting blocks 29 are fixedly connected to the inner wall of the movable disk 9. The inner cavity of the other end of the first support rod 26 is rotatably sleeved with a second fixed rod 28, and the second fixed rod 28 is slidably sleeved in the side inner cavity of the support shaft 7. Both ends of the second fixed rod 28 are fixedly connected to a limited slider 27. A plurality of sliding grooves are provided on the outer wall of the support shaft 7. The size of the sliding groove is the same as the diameter of the second fixed rod 28, so that the second fixed rod 28 can slide inside the sliding groove. When sliding to the lowest or highest position, the first support rod 26 can be deflected, thereby driving the movable disk 9 to be lifted or lowered, thereby realizing the transportation of fertilizer.

[0039] See also Figure 5 and Figure 6A first clamping block 13 is fixedly sleeved on the periphery of the spreading rod 4, and convex plates 15 are fixedly connected at both ends of the first clamping block 13. The two convex plates 15 are fixedly connected by a threaded bolt 16, and a nut is threadedly sleeved on the bottom of the threaded bolt 16, thereby improving the connection and fixing effect between the first clamping block 13 and the spreading rod 4. A first connecting rod 17 is fixedly connected to the outer wall of the first clamping block 13, and a fourth rotating rod 19 is rotatably sleeved on the inner cavity of one end of the first connecting rod 17 away from the first clamping block 13. Both ends of the fourth rotating rod 19 are fixedly connected with first connecting blocks 18, and the first connecting block 18 is fixedly installed on the side of the side plate 12. Under the following of the first connecting rod 17, the deflection angle of the spreading rod 4 can be limited.

[0040] See also Figure 3 , Fig. 9 and Fig.10 The adjusting mechanism includes an eccentric shaft 31, and the eccentric shaft 31 is rotatably connected to both sides of the inner cavity of the particle loading bin 2 inside the particle loading bin 2, and both ends of the eccentric shaft 31 are rotatably connected to the side of the particle loading bin 2, and a motor 8 is fixedly installed on the side of the particle loading bin 2, and a support platform is fixedly connected to the bottom of the motor 8, and the support platform is fixedly connected to the side of the particle loading bin 2, thereby improving the installation stability of the motor 8, and the output shaft of the motor 8 is fixedly connected to one end of the eccentric shaft 31, and a first connecting support rod 39 is rotatably sleeved on the periphery of the eccentric shaft 31, and an air bag 38 is provided on the top of the first connecting support rod 39, and a fourth fixing rod 40 is fixedly connected to the inner cavity at the bottom end of the air bag 38, and the periphery of the fourth fixing rod 40 is rotatably connected to the bottom end of the first connecting support rod 39, and the bottom of the first connecting support rod 39 is fixedly connected to the top of the support shaft 7.

[0041] See also Fig. 9 and Fig.10The top of the airbag 38 is fixedly connected to the concave frame 33, and the inner cavities at both ends of the concave frame 33 are slidably connected to the third fixing rod 36. The outer periphery of the third fixing rod 36 is fixedly sleeved with a supporting connecting rod 37. The bottom of the supporting connecting rod 37 is rotatably connected to the eccentric shaft 31 through a rotating block 32. A sliding groove with the same diameter as the third fixing rod 36 is provided at both ends of the concave frame 33. When the airbag 38 drives the concave frame 33 to move up and down, the two ends of the concave frame 33 can be moved up and down on the periphery of the third fixing rod 36, and the supporting connecting rod 37 can be lifted and limited. The bottom end of the supporting connecting rod 37 is rotatably sleeved with the periphery of the eccentric shaft 31. Two baffles 6 are arranged on the top of the airbag 38. The baffles 6 are fixedly mounted on the top of the inner cavity of the particle loading bin 2, and the baffles 6 are symmetrically arranged on the top of the inner cavity of the particle loading bin 2. There is a certain gap between the two baffles 6 to ensure the movement of the concave frame 33 and avoid affecting the movement of the concave frame 33. A third connecting block 34 is arranged between the two baffles 6. The periphery of the third connecting block 34 is fixedly connected to the two baffles 6 by a connecting rope 35. The third connecting block 34 is fixedly sleeved on the periphery of the top of the concave frame 33.

[0042] In this embodiment, under the action of the adjusting component, several movable disks 9 and the spreading rod 4 are driven to move synchronously. The movable disk 9 bends when pressed down, so that the fertilizer can enter the inner cavity at the top end of the movable disk 9 through the through hole opened in the middle of the movable disk 9, and enter the interior of the corresponding spreading rod 4 through the first connecting plate 11. A part of the fertilizer in the interior of the spreading rod 4 is limited and temporarily stored under the action of the centrifugal wheel 22. The centrifugal wheel 22 is deflected by the centrifugal wheel 22, so that the centrifugal wheel 22 rotates, and the temporarily stored fertilizer directly enters the inner wall of the spreading rod 4, reducing the transportation distance of the fertilizer, thereby improving the continuity of fertilization spraying.

[0043] Example 2: Please refer to Figure 1 , Figure 2 , Fig.11 , Fig.12 and Fig.13, based on Example 1, the first connecting component includes a first sleeve 51, which is fixedly installed on the periphery of the bottom end of the supporting rod 3 by a first bolt 52, and the side of the first sleeve 51 is fixedly connected to the first universal ball 50, and the periphery of the first universal ball 50 is movably connected to the first support rod 49, and the end of the first support rod 49 close to the first universal ball 50 is configured to be semicircular and mutually compatible with the bottom end of the first universal ball 50. Through the movable connection between the first support rod 49 and the first universal ball 50, the adjustment requirements in any direction can be met, and the side of the first support rod 49 is fixedly connected to the second connecting plate 42, and the inner cavity at one end of the second connecting plate 42 is provided with a protrusion 41, and the protrusion 41 is fixedly installed on the outer wall of the bottom end of the particle loading bin 2, and the periphery of the protrusion 41 is symmetrically provided with a first clamping plate 43, and the first clamping plate 43 is fixedly installed in the inner cavity at one end of the second connecting plate 42. The two first clamping plates 43 clamp and fix the protrusion 41 through a limit block 44;

[0044] Specifically, a connecting groove is provided on the side of the protrusion 41, and the diameter of the connecting groove is the same as the diameter of the limiting block 44. When the limiting block 44 enters the connecting groove, the first clamping plate 43 can be initially limited. At this time, the contact distance between the two limiting blocks 44 is large, so that the clamping force of the first clamping plate 43 on the protrusion 41 is limited.

[0045] See also Fig.11 and Fig.12 The other end of the second connecting plate 42 is rotatably connected to the top thread of the second bolt 47, and the bottom outer periphery of the second bolt 47 is rotatably sleeved with a sliding block 46, and the sliding block 46 is slidably connected to the left end of the second connecting plate 42. Two groups of rotating links 48 are symmetrically arranged on the side of the sliding block 46, one end of the rotating link 48 is rotatably connected to the side of the second connecting plate 42, and the other end of the rotating link 48 is rotatably connected to the side of the sliding block 46, and the side of the rotating link 48 is rotatably connected to the second clamping plate 45, and the ends of the two groups of rotating links 48 away from the second connecting plate 42 and the sliding block 46 are rotatably connected to the rotating connecting piece, and the second clamping plate 45 can be driven to complete the angle flipping by rotating the connecting piece and one end of the second clamping plate 45, and the end of the second clamping plate 45 away from the rotating link 48 abuts against the side of the first clamping plate 43.

[0046] See also Fig.11 and Fig.13The second connecting assembly includes a second sleeve 53, which is fixed to the outer periphery of the top end of the ground supporting rod 3 by a third bolt 56. The side of the second sleeve 53 is fixedly connected with a second universal ball 55, and the bottom end of the second universal ball 55 is fixedly connected with a second support rod 54. The bottom end of the second support rod 54 is fixedly installed on the top of the baffle 6. The second support rod 54 has the same shape as the first support rod 49, and can meet the rotation connection requirements of the second universal ball 55 at any angle. At the same time, a clamping plate and a clamping block are provided at the bottom of the second support rod 54, and the clamping plate and the clamping block are fixedly connected by threaded nails. The top of the clamping plate is fixedly connected to the bottom of the second support rod 54, and the clamping block is fixedly installed on the top of the baffle 6.

[0047] The working principle of the present invention is: when the device needs to be used, firstly, the second universal ball 55 is rotated and adjusted so that the second sleeve 53 can correspond to the position of the ground supporting rod 3, and then the second sleeve 53 is squeezed so that the second sleeve 53 wraps the periphery of the ground supporting rod 3, and the position of the second sleeve 53 is fixed by the third bolt 56, and then the two first clamping plates 43 are moved to the periphery of the protrusion 41, so that the two limit blocks 44 can enter the interior of the protrusion 41, and the positions of the two first clamping plates 43 can be limited by the limit blocks 44, and then the first universal ball 50 is rotated and adjusted so that the first sleeve 51 can correspond to the position of the ground supporting rod 3, and then the first sleeve 51 is squeezed so that the first sleeve 51 can contact the ground supporting rod 3 The outer periphery is wrapped, and the position of the first jacket 51 is fixed by the first bolt 52. At this time, the second bolt 47 needs to be rotated. During the rotation of the second bolt 47, the sliding block 46 can be driven to slide on the side of the second connecting plate 42. The sliding of the second connecting plate 42 can play a role of spreading the two sets of rotating connecting rods 48. The spreading of the rotating connecting rods 48 can drive the second clamping plate 45 to rotate and adjust. When the second clamping plate 45 rotates, it can squeeze the first clamping plate 43 inward, thereby increasing the clamping force of the two first clamping plates 43 on the protrusion 41, thereby realizing the connection and fixation between the grain loading bin 2 and the supporting rod 3, so that the grain loading bin 2 drives the grain loading bin 2 to move during the flight of the drone body 1, thereby realizing the spraying of fertilizer;

[0048] After the grain loading bin 2 is installed and fixed, the fertilizer is loaded into the grain loading bin 2 through the feeding tube 5, and then the state of the drone body 1 is controlled by the controller, so that the drone body 1 drives the grain loading bin 2 to move during the flight. When the drone body 1 moves to the target position, the output shaft of the driving motor 8 can drive the eccentric shaft 31 to rotate, and the rotation of the eccentric shaft 31 can drive the first connecting support rod 39 to perform centrifugal movement. The first connecting support rod 39 can lift the airbag 38 during the rising process, so that the top of the airbag 38 is inflated, and the concave frame 33 is driven to lift, so that the two ends of the concave frame 33 slide on the top of the supporting connecting rod 37, and the concave frame 33 is limited by the third connecting block 34 and the connecting rope 35, so that the concave frame 33 can only move up and down and will not fall off.

[0049] At the same time, the first connecting support rod 39 can drive the support shaft 7 to move up and down during the rising process. The up and down movement of the support shaft 7 can drive the movable plate 9 to move up and down through the first connecting component. When the movable plate 9 moves down, the fertilizer is squeezed so that the fertilizer can enter the top inner cavity of the movable plate 9 through the center hole of the movable plate 9. When the movable plate 9 is lifted upward, since the movable plate 9 is provided with a plurality of movable plates 9, and the plurality of movable plates 9 are respectively connected to a plurality of spreading rods 4, when the movable plate 9 moves upward, the spreading rod 4 can be driven to tilt in the side inner cavity of the side plate 12, so that the fertilizer in the top inner cavity of the movable plate 9 enters the interior of the spreading rod 4 through the first connecting plate 11, and the fertilizer entered into the interior of the spreading rod 4 flows out through the leakage hole 20. Since the lengths of the plurality of spreading rods 4 are different and the positions of the openings are different, when the spreading rod 4 is moved under the action of the movable plate 9 When the soil is tilted, the leakage holes 20 on several spreading rods 4 will be arranged in a straight line, and there will be no repeated areas in the leakage holes 20, so the fertilizer will not be repeatedly sprayed on the same area when discharging, thereby improving the uniformity of fertilization, and at the same time, when the fertilizer in the inner cavity of the grain loading bin 2 is continuously reduced, only the lowest end of several movable disks 9 will have fertilizer in it, and the fertilizer will be discharged through the spreading rod 4 with the shortest length for spreading, thereby realizing the control of the fertilizer discharge range and further improving the uniformity of spraying, and in the process of the movable disk 9 continuously moving down and up, by squeezing the fertilizer, the fertilizer that has condensed into blocks can be squeezed and crushed, thereby avoiding blockage caused by excessive fertilizer particles, ensuring the uniformity of fertilization effect at the target location, and by observing the spraying range of the spreading rod 4, the capacity of the inner cavity of the grain loading bin 2 can be reminded.

[0050] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A granular fertilizer spraying device mounted on a drone, comprising a drone body (1), Features: The drone body (1) is provided with a grain loading bin (2) inside, a feeding barrel (5) is fixedly connected to the side of the grain loading bin (2), a plurality of movable disks (9) are provided in the inner cavity of the grain loading bin (2), a plurality of material spreading rods (4) are symmetrically provided on the periphery of the movable disk (9), a plurality of material leakage holes (20) are provided on the outer wall of the material spreading rod (4), a support shaft (7) is provided between the insides of the plurality of movable disks (9), a sliding connection is achieved between the support shaft (7) and the movable disk (9) via a first connecting assembly, an adjusting mechanism for driving the support shaft (7) to reciprocate up and down is provided on the top of the movable disk (9), a plurality of ground supporting rods (3) are fixedly connected to the bottom end of the drone body (1), and a fixed connection is achieved between the grain loading bin (2) and the ground supporting rods (3) via a second connecting assembly and a third connecting assembly; A side plate (12) is arranged on the periphery of one end of the spreading rod (4), and the side plate (12) is fixedly sleeved on the opposite side of the particle loading bin (2). The side plate (12) and the spreading rod (4) are rotatably connected via a first rotating rod (21). The end of the spreading rod (4) close to the movable disk (9) is fixedly sleeved with a first connecting plate (11), and the end of the first connecting plate (11) away from the spreading rod (4) is rotatably sleeved on the side of the movable disk (9) via a second rotating rod (14). The inner cavity of the end of the spreading rod (4) close to the movable disk (9) is fixedly connected with a third rotating rod (23), and a plurality of centrifugal wheels (22) are rotatably sleeved on the periphery of the third rotating rod (23).

2. The granular fertilizer spraying device mounted on a drone according to claim 1, Features: The first connecting assembly comprises a first support rod (26), one end of the first support rod (26) is rotatably sleeved with a first fixed rod (30), both ends of the first fixed rod (30) are fixedly connected with second connecting blocks (29), the second connecting block (29) is fixedly connected to the inner wall of the movable disk (9), the other end of the first support rod (26) is rotatably sleeved with a second fixed rod (28), the second fixed rod (28) is slidably sleeved in the side inner cavity of the support shaft (7), and both ends of the second fixed rod (28) are fixedly connected with a limiting slider (27).

3. The drone-mounted granular fertilizer spraying device according to claim 1, Features: The outer periphery of the spreading rod (4) is fixedly sleeved with a first clamping block (13), the outer wall of the first clamping block (13) is fixedly connected with a first connecting rod (17), the inner cavity of one end of the first connecting rod (17) away from the first clamping block (13) is rotatably sleeved with a fourth rotating rod (19), both ends of the fourth rotating rod (19) are fixedly connected with a first connecting block (18), and the first connecting block (18) is fixedly mounted on the side of the side plate (12).

4. The granular fertilizer spraying device mounted on a drone according to claim 1, Features: The adjusting mechanism comprises an eccentric shaft (31), wherein the eccentric shaft (31) is located inside the particle loading bin (2) and is rotatably connected to both sides of the inner cavity of the particle loading bin (2); a motor (8) is fixedly installed on the side of the particle loading bin (2); an output shaft of the motor (8) is fixedly connected to one end of the eccentric shaft (31); a first connecting rod (39) is rotatably sleeved on the periphery of the eccentric shaft (31); an air bag (38) is provided on the top of the first connecting rod (39); a fourth fixing rod (40) is fixedly connected to the inner cavity at the bottom end of the air bag (38); the periphery of the fourth fixing rod (40) is rotatably connected to the bottom end of the first connecting rod (39); and the bottom of the first connecting rod (39) is fixedly connected to the top of the support shaft (7).

5. The granular fertilizer spraying device mounted on a drone according to claim 4, Features: The top of the airbag (38) is fixedly connected to a concave frame (33), and the inner cavities at both ends of the concave frame (33) are slidably connected to a third fixed rod (36), and the outer periphery of the third fixed rod (36) is fixedly sleeved with a support connecting rod (37), and the bottom end of the support connecting rod (37) is rotatably sleeved with the outer periphery of the eccentric shaft (31). Two baffles (6) are arranged on the top of the airbag (38), and the baffles (6) are fixedly installed on the top of the inner cavity of the particle loading bin (2), and the baffles (6) are symmetrically arranged on the top of the inner cavity of the particle loading bin (2), and a third connecting block (34) is arranged between the two baffles (6), and the outer periphery of the third connecting block (34) is fixedly connected to the two baffles (6) by a connecting rope (35), and the third connecting block (34) is fixedly sleeved on the outer periphery of the top of the concave frame (33).

6. The granular fertilizer spraying device mounted on a drone according to claim 1, Features: The first connecting assembly comprises a first sleeve (51), the first sleeve (51) is fixedly mounted on the outer periphery of the bottom end of the ground supporting rod (3) by means of a first bolt (52), the side of the first sleeve (51) is fixedly connected with a first universal ball (50), the outer periphery of the first universal ball (50) is movably connected with a first supporting rod (49), the side of the first supporting rod (49) is fixedly connected with a second connecting plate (42), the inner cavity at one end of the second connecting plate (42) is provided with a protrusion (41), the protrusion (41) is fixedly mounted on the outer wall of the bottom end of the particle loading bin (2), the outer periphery of the protrusion (41) is symmetrically provided with a first clamping plate (43), the first clamping plate (43) is fixedly mounted on the inner cavity at one end of the second connecting plate (42), and the two first clamping plates (43) are clamped and fixed to the protrusion (41) through a limit block (44).

7. The granular fertilizer spraying device mounted on a drone according to claim 6, Features: The other end of the second connecting plate (42) is rotatably connected to the top of a second bolt (47), and the bottom outer periphery of the second bolt (47) is rotatably sleeved with a sliding block (46), and the sliding block (46) is slidably connected to the left end of the second connecting plate (42), and two groups of rotating connecting rods (48) are symmetrically arranged on the side of the sliding block (46), one end of the rotating connecting rod (48) is rotatably connected to the side of the second connecting plate (42), and the other end of the rotating connecting rod (48) is rotatably connected to the side of the sliding block (46), and the side of the rotating connecting rod (48) is rotatably connected to a second clamping plate (45), and one end of the second clamping plate (45) away from the rotating connecting rod (48) is abutted against the side of the first clamping plate (43).

8. The granular fertilizer spraying device mounted on a drone according to claim 1, Features: The second connecting assembly comprises a second sleeve (53), the second sleeve (53) being fixed to the outer periphery of the top end of the ground supporting rod (3) by means of a third bolt (56), the side of the second sleeve (53) being fixedly connected to a second universal ball (55), the bottom end of the second universal ball (55) being fixedly connected to a second supporting rod (54), the bottom end of the second supporting rod (54) being fixedly mounted on the top of the baffle (6).

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