Unmanned aerial vehicle airborne seedling throwing device

Abstract

The invention discloses an unmanned aerial vehicle airborne seedling slinging device, and relates to the technical field of seedling slinging devices.The unmanned aerial vehicle airborne seedling slinging device comprises a plurality of flexible seedling trays, a lifting assembly, a conveying assembly, a seedling conveying assembly and a baffle, the lifting assembly can drive the flexible seedling trays to move up and down through a tray, and then the flexible seedling trays make contact with a bearing surface; the flexible seedling trays can be conveyed downstream through the bearing face, the seedling conveying assembly is used for conveying seedlings to the seedling throwing opening, the baffle is fixedly arranged between the seedling conveying assembly and the bearing face, the seedling throwing device throws the seedlings through an unmanned aerial vehicle, multiple sets of flexible seedling trays can be borne at a time, the flexible seedling trays on the conveying assembly can be automatically replaced, and the seedling throwing efficiency is improved. The technical effects of being capable of adapting to complex terrains and high in operation efficiency are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of seedling throwing devices, and in particular to a seedling throwing device carried by an unmanned aerial vehicle (UAV). Background Art

[0002] Rice seedling broadcasting is a simplified cultivation technology that significantly improves efficiency and saves labor by broadcasting seedlings into the field instead of traditional transplanting.

[0003] Traditional rice seedling broadcasting relies primarily on manual labor or ground-based machinery. Manual broadcasting makes it difficult to ensure uniform seedling distribution, resulting in uneven plant growth and reduced yields. While ground-based broadcasting machines can improve efficiency, they are limited by paddy field conditions and suffer from drawbacks such as sluggishness and difficulty steering. They are also unsuitable for small plots or complex terrain. Furthermore, traditional broadcasting devices require frequent manual replacement of seedling trays, resulting in poor stability and difficulty in continuous operation, hindering the development of large-scale planting.

[0004] In order to solve the above problems, the present invention proposes a drone-mounted rice seedling throwing device that is adaptable to complex terrain and has higher working efficiency. Summary of the Invention

[0005] The purpose of the present invention is to provide an unmanned aerial vehicle (UAV)-mounted seedling throwing device, which uses flexible seedling trays to hold seedlings. Through the cooperation of a lifting component and a conveying component, multiple sets of flexible seedling trays can be automatically replaced, thereby improving the work efficiency of the seedling throwing operation.

[0006] To achieve the above object, the present invention provides the following solutions:

[0007] The present invention provides a drone-mounted rice seedling throwing device, comprising:

[0008] A flexible seedling tray, wherein the flexible seedling tray is used to hold the seedlings;

[0009] A lifting assembly, wherein a plurality of trays are arranged on the lifting assembly at intervals in the vertical direction, the trays are used to store the flexible seedling trays, and one end of the flexible seedling tray extends from one side of the tray, and the lifting assembly can drive the trays to move up and down;

[0010] A conveying assembly, wherein a supporting surface is provided above the conveying assembly, the tray is spaced apart from the supporting surface in a horizontal direction, the flexible seedling tray can extend horizontally to above the supporting surface, and the supporting surface can convey the flexible seedling tray on the tray downstream;

[0011] A seedling delivery assembly, the seedling delivery assembly is used to deliver the seedlings on the conveying assembly to the seedling throwing port, and the seedling delivery assembly is spaced apart from the supporting surface;

[0012] A baffle is fixedly arranged between the seedling delivery assembly and the supporting surface, and is used to guide the flexible seedling tray to below the supporting surface.

[0013] As one embodiment, the lifting assembly also includes a first base, a first screw rod and a first motor. The first screw rod is vertically arranged and is transmission-connected to the first motor. Multiple first bases are spaced apart in the vertical direction and are threadedly connected to the first screw rod. Multiple trays are respectively connected to multiple first bases.

[0014] As one embodiment, the conveying assembly includes a first conveyor belt, a driving roller and a driven roller, the driving roller and the driven roller are used to support the first conveyor belt, the driving roller is connected to the driving device, and the outer surface of the first conveyor belt serves as a supporting surface.

[0015] As an embodiment, the end of the first conveyor belt close to the baffle is lower than the end of the first conveyor belt close to the lifting assembly, and the baffle is inclined toward the setting direction of the first conveyor belt.

[0016] As one embodiment, the seedling delivery assembly includes a seedling clamping unit, which includes a second screw rod, a second motor, a second base, a movable frame and a clamping claw. The second screw rod is transmission-connected to the second motor, the second base is threadedly connected to the second screw rod, and the movable frame is installed on the second base. A plurality of the clamping claws are spaced apart on the movable frame along a conveying direction perpendicular to the first conveyor belt, and the clamping claws are used to clamp the seedlings.

[0017] As one embodiment, the clamp includes a third motor, a mounting plate, a movable plate, a rotating plate and a clamping plate, the mounting plate being mounted on one side of the output shaft of the third motor, the mounting plate being provided with a through hole for the output shaft of the third motor to pass through, the output shaft of the third motor being provided with an external thread, the movable plate being provided with a threaded hole matching the external thread, the movable plate being located on the side of the mounting plate away from the third motor body, the clamping plates being provided with two, the first ends of the two clamping plates being respectively rotatably connected to the mounting plate, the first ends of the two clamping plates being respectively provided on both sides of the through hole, the rotating plates being provided with two, the first ends of the two rotating plates being respectively rotatably connected to the middle parts of the two clamping plates, and the second ends of the two rotating plates being respectively connected to the two ends of the movable plate.

[0018] As one embodiment, the seedling delivery assembly includes a seedling delivery unit, which includes a plurality of seedling delivery channels arranged side by side, the entrances of the seedling delivery channels are arranged corresponding to the clamps, and the seedling delivery unit also includes a second conveyor belt, a drive motor, a driving shaft and a driven shaft, the driving shaft is transmission-connected to the drive motor, and a driving shaft is rotationally arranged at one end of any one of the seedling delivery channels, and the driven shaft is rotationally arranged at the other end of the seedling delivery channel, and a second conveyor belt is arranged in any one of the seedling delivery channels, and the second conveyor belt is arranged on the driving shaft and the driven shaft, and any two adjacent driving shafts are transmission-connected by a speed change gear set so that any two of the second conveyor belts run differentially.

[0019] As one embodiment, the speed change gear set includes a first gear and a second gear, the size of the first gear is larger than that of the second gear, the first gear is connected to the driving shaft close to the drive motor, the second gear is connected to the driving shaft away from the drive motor, and the first gear is meshed with the second gear.

[0020] As one embodiment, it also includes a seedling guide bucket, and the outlets of the multiple seedling delivery channels are arranged corresponding to the entrance of the seedling guide bucket. The seedling guide bucket includes a seedling guide slope, and the seedling throwing port is arranged at the bottom end of the seedling guide slope. The seedling guide slope is used to guide the seedlings entering the seedling guide bucket to the seedling throwing port.

[0021] As one embodiment, a sensor is further included, which is arranged at one end of the conveying component close to the seedling delivering component, and the sensor is electrically connected to the seedling delivering component and the conveying component.

[0022] Compared with the prior art, the present invention has achieved the following technical effects:

[0023] In the drone-mounted seedling throwing device disclosed by the present invention, the flexible seedling tray has the characteristics of being able to deform by external force and recovering the deformation when the external force disappears. The lifting component is provided with multiple trays for storing flexible seedling trays in the vertical direction, so that the seedling throwing device can carry multiple sets of flexible seedling trays at one time, thereby improving the total carrying capacity of the seedling throwing device. One end of the flexible seedling tray extends from one side of the tray and can extend horizontally to above the supporting surface. When the lifting component drives the push tray to move from top to bottom, one end of the flexible seedling tray contacts the supporting surface, and the supporting surface can pull the flexible seedling tray off the tray through friction and transport it. To the downstream, so that the seedling delivery component can deliver the seedlings to the seedling throwing port to complete the seedling throwing. When the flexible seedling tray contacts the baffle, the baffle can change the movement direction of the flexible seedling tray and guide the flexible seedling tray below the supporting surface, so that other flexible seedling trays on the tray can reach the side of the seedling delivery component through the supporting surface, so as to carry out the next round of seedling throwing through the seedling delivery component, and then the flexible seedling tray on the conveying component can be automatically replaced. The seedling throwing device is carried out by a drone, which can adapt to complex terrain, a larger seedling carrying capacity and automatic replacement of flexible seedling trays, which effectively improves the operating efficiency of the drone-mounted seedling throwing device. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 Schematic diagram of the structure of the UAV-mounted rice seedling throwing device in an embodiment of the present invention;

[0026] Figure 2 for Figure 1 Schematic diagram from another perspective;

[0027] Figure 3 This is a structural diagram of a lifting assembly in an embodiment of the present invention;

[0028] Figure 4 This is a structural diagram of a seedling delivery unit in an embodiment of the present invention;

[0029] Figure 5 Schematic diagram of the structure of the clamping jaws in an embodiment of the present invention;

[0030] Figure 6 Schematic diagram of a seedling clamping unit in an embodiment of the present invention;

[0031] Figure 7 This is a structural diagram of a recycling box in an embodiment of the present invention;

[0032] Among them, 1. flexible seedling tray; 2. seedlings; 3. tray; 4. seedling throwing port; 5. baffle; 6. first base; 7. first screw rod; 8. first motor; 9. first conveyor belt; 10. second screw rod; 11. second motor; 12. second base; 13. movable frame; 14. clamping claw; 15. third motor; 16. mounting plate; 17. movable plate; 18. rotating plate; 19. clamping plate; 20. second conveyor belt; 21. driving motor; 22. driving shaft; 23. driven shaft; 24. first gear; 25. second gear; 26. seedling guide bucket; 27. sensor; 28. base plate; 29. recycling box; 30. guide platform; 31. lifting track; 32. conveying track; 33. support plate; 34. partition. DETAILED DESCRIPTION

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0034] The purpose of the present invention is to provide an unmanned aerial vehicle (UAV)-mounted seedling throwing device, which realizes the automatic replacement of multiple sets of flexible seedling trays through the cooperation of a lifting component, a conveying component and a baffle, thereby improving the operating efficiency of the seedling throwing device.

[0035] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0036] Please refer to Figure 1-7The drone-mounted seedling-throwing device disclosed in the embodiment of the present invention comprises: a flexible seedling tray 1, a lifting assembly, a conveying assembly, a seedling-feeding assembly and a baffle 5; wherein the flexible seedling tray 1 is used to hold the seedlings 2; a plurality of trays 3 are arranged at intervals on the lifting assembly in the vertical direction, the trays 3 are used to store the flexible seedling trays 1, and one end of the flexible seedling tray 1 extends from one side of the tray 3, and the lifting assembly can drive the trays 3 to move up and down; a supporting surface is provided above the conveying assembly, and the trays 3 are spaced apart from the supporting surface in the horizontal direction to avoid interference between the trays 3 and the supporting surface. One end of the flexible seedling tray 1 extending out of the tray 3 can extend horizontally to above the supporting surface, and the supporting surface can transport the flexible seedling tray 1 on the tray 3 downstream; along the direction of transfer of the seedlings 2 inside the seedling throwing device, the inlet end of the seedling delivery component is arranged downstream of the supporting surface, and the seedling delivery component is used to transport the seedlings 2 in the flexible seedling tray 1 on the delivery component to the seedling throwing port 4, and the seedling delivery component is spaced apart from the supporting surface; the baffle 5 is fixedly arranged between the seedling delivery component and the supporting surface, and the baffle 5 can change the forward direction of the flexible seedling tray 1 to guide the flexible seedling tray 1 below the supporting surface.The lifting mechanism 3 is a kind of lifting mechanism that lifts up and down, and lifts up and down of lifting mechanism 3, and lifts up and down of lifting mechanism 3. After the lifting of the lifting device 1, the lifting device 11 is lifted up and the lifting of the lifting device 12 is completed, so that the lifting of the lifting device 12 is completed.

[0037] It can be understood that one end of the flexible seedling tray 1 extends out from one side of the tray 3, which can be achieved by controlling the initial placement position of the flexible seedling tray 1, or by changing the size of the flexible seedling tray 1, that is, making the size of the flexible seedling tray 1 slightly larger than the size of the tray 3 along the direction of the connection between the lifting component and the conveying component.

[0038] In this embodiment, the upper surface of the tray 3 is smoothed to reduce the friction between the tray 3 and the flexible seedling tray 1, and the upper surface of the supporting surface is roughened to increase the friction between the supporting surface and the flexible seedling tray 1, so that the flexible seedling tray 1 on the tray 3 can be more easily transported downstream by the supporting surface through friction.

[0039] In this embodiment, the drone-mounted seedling throwing device also includes a base plate 28, and the lifting component, conveying component and seedling delivery component are all installed on the base plate 28. The entire drone-mounted seedling throwing device is connected to the drone through the base plate 28, thereby being able to meet the seedling throwing operations in areas with complex terrain.

[0040] In this embodiment, a support frame is installed below the gap between the conveying assembly and the seedling delivering assembly, the support frame is fixedly mounted on the base plate 28, the baffle 5 is fixedly mounted on the support frame, and the upper end of the baffle 5 extends upward to the upper side of the supporting surface close to one end of the baffle 5.

[0041] In this embodiment, the drone-mounted seedling throwing device also includes a recycling box 29, which is arranged below the gap between the conveying component and the seedling delivering component. The baffle 5 is a straight plate, and the lower end of the baffle 5 is fixedly connected to the side wall of the recycling box 29. The upper end of the baffle 5 extends upward to the upper side of the conveying component close to the end of the baffle 5 to ensure that the flexible seedling tray 1 located on the supporting surface can contact the baffle 5 during the downstream movement. The angle between the baffle 5 and the bearing surface is an acute angle, and the baffle 5 and the bearing surface are spaced apart so that the flexible seedling tray 1 can enter the recycling box 29 under the action of the baffle 5.

[0042] In this embodiment, the recycling box 29 is a rectangular box, which is detachably connected to the base plate 28. The upper end of the recycling box 29 is open, and the upper end opening of the recycling box 29 is located below the gap between the conveying component and the seedling delivery component. A guide platform 30 is provided on the bottom wall of the recycling box 29 close to the baffle 5 side. The guide platform 30 is arc-shaped so that the flexible seedling tray 1 can be flatly stored in the recycling box 29.

[0043] In this embodiment, the baffle 5 is arc-shaped, with the concave surface of the baffle 5 facing the bearing surface. The arc-shaped baffle 5 is more conducive to guiding the flexible seedling tray 1.

[0044] In this embodiment, the baffle 5 is used to smooth the surface in contact with the flexible seedling tray 1 .

[0045] In this embodiment, the lifting assembly also includes a first base 6, a first screw rod 7 and a first motor 8. The first screw rod 7 is vertically arranged and is transmission-connected to the first motor 8. Multiple first bases 6 are spaced apart in the vertical direction and are threadedly connected to the first screw rod 7. Multiple trays 3 are respectively connected to multiple spaced-apart first bases 6. The first motor 8 drives the first screw rod 7 to rotate, and then can drive the first base 6 to move up and down along the axial direction of the first screw rod 7, thereby realizing the up and down movement of the tray 3.

[0046] In this embodiment, the lifting assembly also includes a lifting rail 31, which is vertically arranged. The lower end of the lifting rail 31 is connected to the base plate 28. The first motor 8 is installed at one end of the lifting rail 31. The lifting rail 31 is provided with a groove that is engaged with the first base 6 to ensure that the first base 6 can move smoothly in the vertical direction.

[0047] In this embodiment, the conveying assembly includes a first conveyor belt 9, a driving roller and a driven roller. The driving roller and the driven roller are used to support the first conveyor belt 9. The driving roller is connected to the driving device, and the outer surface of the first conveyor belt 9 serves as a supporting surface; the driving roller and the driven roller are detachably mounted on the base plate 28 through a bracket, and the driving device provides power to the first conveyor belt 9 through the driving roller to transport the flexible seedling tray 1 through the first conveyor belt 9.

[0048] In this embodiment, the conveying assembly includes a plurality of rotating rollers, which are arranged at intervals along a certain direction and rotate in the same direction to move the flexible seedling tray 1 on the tray 3 away from the tray 3. It is understood that the purpose of arranging the rotating rollers at intervals is to prevent friction between adjacent rotating rollers. Under the premise of ensuring that adjacent rotating rollers do not rub against each other, the gap between the rotating rollers is as small as possible.

[0049] In this embodiment, the end of the first conveyor belt 9 close to the baffle 5 is lower than the end of the first conveyor belt 9 close to the lifting assembly. The gravity of the flexible seedling tray 1 can be utilized to make the flexible seedling tray 1 easier to move toward the seedling delivery assembly, and it is more conducive to reducing the angle between the baffle 5 and the bearing surface.

[0050] In this embodiment, the baffle 5 is tilted toward the direction in which the first conveyor belt 9 is provided, which is beneficial for reducing the angle between the baffle 5 and the bearing surface, so as to facilitate the guidance of the flexible seedling tray 1 .

[0051] In this embodiment, the seedling delivery assembly includes a seedling clamping unit, which includes a second screw rod 10, a second motor 11, a second base 12, a movable frame 13 and a clamping claw 14. The second screw rod 10 is transmission-connected to the second motor 11, and the second motor 11 is detachably mounted on the base through a frame. The second base 12 is threadedly connected to the second screw rod 10, and the movable frame 13 is mounted on the second base 12. A plurality of clamping claws 14 are spaced apart on the movable frame 13 along a conveying direction perpendicular to the first conveyor belt 9. The clamping claws 14 are used to clamp the seedlings 2. The second screw rod 10 extends toward the seedling delivery unit, so that the clamping claws 14 can clamp the seedlings 2 to the seedling delivery unit through the second screw rod 10.

[0052] In this embodiment, the seedling clamping unit also includes a conveying track 32. The setting direction of the conveying track 32 is the same as the setting direction of the second screw rod 10. The conveying track 32 is fixedly connected to the base plate 28. The second motor 11 is installed at one end of the conveying track 32. The conveying track 32 is provided with a groove that matches the second base 12 to ensure that the second base 12 can move stably along the axial direction of the second screw rod 10.

[0053] In this embodiment, the clamping jaw 14 includes a third motor 15, a mounting plate 16, a movable plate 17, a rotating plate 18 and a clamping plate 19. The third motor 15 is detachably mounted on the movable frame 13. The mounting plate 16 is mounted on one side of the output shaft of the third motor 15. A through hole is provided on the mounting plate 16 for the output shaft of the third motor 15 to pass through. The output shaft of the third motor 15 is provided with an external thread. A threaded hole matching the external thread is provided on the movable plate 17. The movable plate 17 is located on the side of the mounting plate 16 away from the main body of the third motor 15. Two clamping plates 19 are provided. The first ends of the two clamping plates 19 are respectively connected to the mounting plate 16. The mounting plate 16 is rotatably connected, and the first ends of the two clamping plates 19 are respectively arranged on both sides of the through hole. There are two rotating plates 18, and the first ends of the two rotating plates 18 are respectively rotatably connected to the middle parts of the two clamping plates 19, and the second ends of the two rotating plates 18 are respectively connected to the two ends of the movable plate 17; when working, the third motor 15 rotates, and can drive the movable plate 17 to move closer to or away from the third motor 15 through the external thread on the output shaft. During the movement of the movable plate 17, the second ends of the clamping plates 19 can be driven closer to or away from each other through the rotating plate 18, thereby realizing the clamping and releasing actions.

[0054] In this embodiment, the clamping height of the clamping jaws 14 is located at the middle portion of the seedling 2 , that is, the clamping jaws 14 remove the seedling 2 from the flexible seedling tray 1 by clamping the middle portion of the seedling 2 .

[0055] In this embodiment, the seedling delivery assembly includes a seedling delivery unit, which includes a plurality of seedling delivery channels arranged side by side. The entrances of the seedling delivery channels are arranged corresponding to the clamping claws 14. The seedling delivery unit also includes a second conveyor belt 20, a drive motor 21, a driving shaft 22 and a driven shaft 23. The driving shaft 22 is transmission-connected to the drive motor 21. One end of any seedling delivery channel is correspondingly provided with a driving shaft 22 for rotation, and the driven shaft 23 is rotationally provided at the other end of the seedling delivery channel. A second conveyor belt 20 is provided in any seedling delivery channel, and the second conveyor belt 20 is provided on the driving shaft 22 and the driven shaft 23. Any two adjacent driving shafts 22 are transmission-connected by a speed-changing gear set so that any two second conveyor belts 20 run differentially. Through the differentially running second conveyor belt 20, multiple seedlings 2 clamped by the seedling clamping unit at one time can be sequentially transported to the seedling throwing port 4 to prevent the seedlings 2 from squeezing each other and causing blockage.

[0056] In this embodiment, the speed change gear set includes a first gear 24 and a second gear 25. The size of the first gear 24 is larger than that of the second gear 25. The first gear 24 is connected to the driving shaft 22 close to the drive motor 21, and the second gear 25 is connected to the driving shaft 22 away from the drive motor 21. The first gear 24 and the second gear 25 are meshed. From the seedling delivery channel close to the drive motor 21 to the seedling delivery channel away from the drive motor 21, the speed of the second conveyor belt 20 gradually increases, thereby realizing the differential operation of the second conveyor belt 20.

[0057] In this embodiment, the speed change gear set includes a first gear 24 and a second gear 25. The size of the first gear 24 is larger than that of the second gear 25. The first gear 24 is connected to the driving shaft 22 away from the driving motor 21, and the second gear 25 is connected to the driving shaft 22 close to the driving motor 21. The first gear 24 is meshed with the second gear 25. From the seedling delivery channel close to the driving motor 21 to the seedling delivery channel away from the driving motor 21, the speed of the second conveyor belt 20 gradually decreases, thereby realizing the differential operation of the second conveyor belt 20.

[0058] In this embodiment, a group of independent belt conveying structures are provided in each seedling delivery channel, and the conveying speeds of any group of belt conveying structures are different to achieve differential conveying of the seedlings 2.

[0059] In this embodiment, the drone-mounted seedling throwing device also includes a seedling guide bucket 26, and the outlets of multiple seedling delivery channels are all arranged corresponding to the entrance of the seedling guide bucket 26. The seedling guide bucket 26 includes a seedling guide slope, and the seedling throwing mouth 4 is arranged at the bottom end of the seedling guide slope. The seedling guide slope is used to guide the seedlings 2 entering the seedling guide bucket 26 to the seedling throwing mouth 4, thereby realizing the planting of a single row of seedlings 2 at the target position through the drone-mounted seedling throwing device.

[0060] In this embodiment, the seedling guide bucket 26 is funnel-shaped.

[0061] In this embodiment, the drone-mounted seedling throwing device also includes a sensor 27, which is used to detect whether there are seedlings 2 at the target position. The sensor 27 is arranged at one end of the conveying component close to the seedling delivery component. The sensor 27 is electrically connected to the seedling delivery component and the conveying component. When the sensor 27 detects that there are seedlings 2 at the target position, the conveying component stops working, the seedling clamping unit works to clamp the seedlings 2 at the target position and transfer them to the seedling delivery unit, and the seedling delivery unit works to transfer the seedlings 2 to the seedling throwing port 4, thereby realizing automatic transportation of the seedlings 2.

[0062] In this embodiment, the drone-mounted seedling-transporting device also includes a controller, which is connected to the terminal signal, and the controller is electrically connected to the lifting component, the conveying component and the seedling-delivering component respectively; the lifting component, the conveying component and the seedling-delivering component can all be independently controlled through the terminal.

[0063] In this embodiment, a flexible anti-slip structure is provided on one side of the second ends of the two clamping plates 19 close to each other, so as to improve the clamping stability of the clamping jaws 14 .

[0064] In this embodiment, the seedling delivery assembly includes a support plate 33, on which a plurality of partitions 34 are installed at intervals. The partitions 34 are detachably connected to the support plate 33 to divide the upper space of the support plate 33 to form a plurality of seedling delivery channels. The partitions 34 prevent the seedlings 2 in adjacent seedling delivery channels from contacting each other, thereby ensuring the stability of the seedlings 2 during transportation.

[0065] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help understand the method and core concept of the present invention. At the same time, those skilled in the art will find that the specific implementation methods and application scopes may vary based on the concept of the present invention. In summary, the contents of this specification should not be construed as limiting the present invention.

Claims

1. A UAV-mounted rice seedling throwing device, characterized in that: include: A flexible seedling tray (1), wherein the flexible seedling tray (1) is used for holding seedlings (2); A lifting assembly, wherein a plurality of trays (3) are arranged at intervals on the lifting assembly in a vertical direction, the trays (3) are used to store the flexible seedling trays (1), and one end of the flexible seedling trays (1) extends from one side of the trays (3), and the lifting assembly can drive the trays (3) to move up and down; A conveying component, wherein a supporting surface is provided above the conveying component, the tray (3) is spaced apart from the supporting surface in a horizontal direction, the flexible seedling tray (1) can extend above the supporting surface in a horizontal direction, and the supporting surface can convey the flexible seedling tray (1) on the tray (3) downstream; A seedling delivery component, the seedling delivery component is used to deliver the seedlings (2) on the delivery component to the seedling throwing port (4), and the seedling delivery component is spaced apart from the supporting surface; A baffle (5), wherein the baffle (5) is fixedly arranged between the seedling delivery assembly and the supporting surface, and the baffle (5) is used to guide the flexible seedling tray (1) below the supporting surface.

2. The drone-mounted rice seedling throwing device according to claim 1, characterized in that: The lifting assembly further comprises a first base (6), a first screw rod (7) and a first motor (8); the first screw rod (7) is vertically arranged and is transmission-connected to the first motor (8); a plurality of first bases (6) are spaced apart in the vertical direction and are threadedly connected to the first screw rod (7); and a plurality of trays (3) are respectively connected to the plurality of first bases (6).

3. The drone-mounted rice seedling throwing device according to claim 1, characterized in that: The conveying assembly comprises a first conveying belt (9), a driving roller and a driven roller, wherein the driving roller and the driven roller are used to support the first conveying belt (9), the driving roller is connected to a driving device, and the outer surface of the first conveying belt (9) serves as a supporting surface.

4. The drone-mounted rice seedling throwing device according to claim 3, characterized in that: The end of the first conveyor belt (9) close to the baffle (5) is lower than the end of the first conveyor belt (9) close to the lifting assembly, and the baffle (5) is inclined toward the setting direction of the first conveyor belt (9).

5. The drone-mounted rice seedling throwing device according to claim 1, characterized in that: The seedling delivery assembly includes a seedling clamping unit, which includes a second screw rod (10), a second motor (11), a second base (12), a movable frame (13) and a clamping claw (14). The second screw rod (10) is transmission-connected to the second motor (11), the second base (12) is threadedly connected to the second screw rod (10), the movable frame (13) is mounted on the second base (12), and a plurality of the clamping claws (14) are spaced apart on the movable frame (13) along a conveying direction perpendicular to the first conveyor belt (9), and the clamping claws (14) are used to clamp the seedlings (2).

6. The drone-mounted rice seedling throwing device according to claim 5, characterized in that: The clamping jaw (14) includes a third motor (15), a mounting plate (16), a movable plate (17), a rotating plate (18) and a clamping plate (19), wherein the mounting plate (16) is mounted on one side of the output shaft of the third motor (15), and a through hole is provided on the mounting plate (16) for the output shaft of the third motor (15) to pass through, and an external thread is provided on the output shaft of the third motor (15), and a threaded hole matching the external thread is provided on the movable plate (17), and the movable plate (17) is located on the mounting plate ( 16) is located on a side away from the main body of the third motor (15), and two clamping plates (19) are provided, and the first ends of the two clamping plates (19) are respectively rotatably connected to the mounting plate (16), and the first ends of the two clamping plates (19) are respectively provided on both sides of the through hole, and two rotating plates (18) are provided, and the first ends of the two rotating plates (18) are respectively rotatably connected to the middle parts of the two clamping plates (19), and the second ends of the two rotating plates (18) are respectively connected to the two ends of the movable plate (17).

7. The drone-mounted rice seedling throwing device according to claim 5, characterized in that: The seedling delivery assembly includes a seedling delivery unit, which includes a plurality of seedling delivery channels arranged side by side. The entrances of the seedling delivery channels are arranged corresponding to the clamping claws (14). The seedling delivery unit also includes a second conveyor belt (20), a driving motor (21), a driving shaft (22) and a driven shaft (23). The driving shaft (22) is transmission-connected to the driving motor (21). One end of any seedling delivery channel is correspondingly provided with a driving shaft (22), and the driven shaft (23) is rotationally provided at the other end of the seedling delivery channel. A second conveyor belt (20) is provided in any seedling delivery channel. The second conveyor belt (20) is provided on the driving shaft (22) and the driven shaft (23). Any two adjacent driving shafts (22) are transmission-connected via a speed change gear set so that any two second conveyor belts (20) run at differential speeds.

8. The drone-mounted rice seedling throwing device according to claim 7, characterized in that: The speed change gear set comprises a first gear (24) and a second gear (25), wherein the size of the first gear (24) is larger than that of the second gear (25), the first gear (24) is connected to the driving shaft (22) close to the driving motor (21), and the second gear (25) is connected to the driving shaft (22) away from the driving motor (21), and the first gear (24) and the second gear (25) are meshed.

9. The drone-mounted rice seedling throwing device according to claim 7, characterized in that: The invention also includes a seedling guide bucket (26), wherein the outlets of the plurality of seedling delivery channels are all arranged corresponding to the inlet of the seedling guide bucket (26), the seedling guide bucket (26) includes a seedling guide slope, and the seedling throwing port (4) is arranged at the bottom end of the seedling guide slope, and the seedling guide slope is used to guide the seedlings (2) entering the seedling guide bucket (26) to the seedling throwing port (4).

10. The drone-mounted rice seedling throwing device according to claim 1, characterized in that: It also includes a sensor (27), which is arranged at one end of the conveying component close to the seedling delivering component, and the sensor (27) is electrically connected to the seedling delivering component and the conveying component.

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