A rice precision seeding and reseeding device and a seeding and reseeding method

Abstract

A precision rice sowing and reseeding device and method are disclosed. The device includes a frame, a sowing device, a seed tray conveying device, a seed storage identification and positioning device, and a reseeding device. The seed storage identification and positioning device includes an industrial camera to acquire the sowing status on the seed tray, providing a basis for the reseeding device. The reseeding device includes a reseeding seed storage box, a reseeding seed metering device, and a reseeding photoelectric sensor. The reseeding photoelectric sensor is used to detect whether the seed tray has entered the reseeding area below the reseeding seed storage box. The reseeding seed storage box is provided with a number of filling ports corresponding to the number of rows of holes on the seed tray. Each filling port of the reseeding seed storage box is connected to a reseeding seed metering device, and each reseeding seed metering device corresponds to a row of holes on the seed tray, reseeding empty holes in that row of holes. The method includes several steps: sowing, seed tray sowing status identification, and reseeding by the reseeding device. This invention can solve the problems of low single-hole precision, poor seed filling reliability, and high empty hole rate in hybrid rice mechanical sowing.

Description

Technical Field

[0001] This invention belongs to the field of intensive rice seedling raising and precision sowing technology, specifically relating to a rice precision sowing and reseeding device and a sowing and reseeding method. Background Technology

[0002] Currently, hybrid rice cultivation mainly relies on transplanting. Due to the high-yield characteristics of hybrid rice, planting requires low seed density to fully utilize its tillering ability and ensure yield. Therefore, hybrid rice seedling raising and sowing technology necessitates low-rate precision sowing, typically using 1-3 seeds per hill (2 seeds being optimal) for sowing and 1-2 seedlings per hill for transplanting. Hybrid rice seeds have complex physical characteristics, such as irregular shape, large differences in individual size, and rough surface. Furthermore, their growth characteristics require pre-germination before sowing, further increasing the difficulty of precision sowing technology. Existing pneumatic seed metering devices are complex in structure, unstable in performance, costly, and have not effectively solved the problem of suction hole clogging. Mechanical seeders have advantages such as simple structure, low cost, and strong applicability, but their reliability is poor, and the number and precision of seeds sown are unstable. Therefore, to achieve the agronomical requirements of low-rate precision sowing for hybrid rice seedling raising in pots and to solve the problems of poor seed mobility and low sowing efficiency in the seed storage box, a precision sowing and reseeding device for rice was designed. Summary of the Invention

[0003] The purpose of this invention is to provide a precision rice sowing and replanting device and a sowing and replanting method to solve the problems of low single-hole precision, poor seed filling reliability, and high empty hole rate in mechanical sowing of hybrid rice.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is: a precision rice sowing and reseeding device, comprising a frame, a sowing device and a seed tray conveying device, wherein the sowing device and the seed tray conveying device are mounted on the frame, and further comprising a seed storage identification and positioning device and a reseeding device, wherein the sowing device, the seed storage identification and positioning device and the reseeding device are arranged sequentially along the conveying direction of the seed tray;

[0005] The seed storage identification and positioning device includes an industrial camera, which is used to acquire the sowing situation on the seed trays and provide a basis for the reseeding device to reseed.

[0006] The replanting device includes a replanting seed storage box, a replanting seed dispensing device, and a replanting photoelectric sensor. The replanting seed storage box is mounted on the frame and located above the seed tray conveying device. The replanting photoelectric sensor is mounted on the frame and is used to detect whether the seed tray on the seed tray conveying device has entered the replanting area below the replanting seed storage box. The replanting seed storage box is provided with multiple seed filling ports, and the number of seed filling ports corresponds to the number of rows of holes on the seed tray. Each seed filling port of the replanting seed storage box is connected to one of the replanting seed dispensing devices, and each replanting seed dispenser corresponds to a row of holes on the seed tray and replants in the empty holes in that row of holes.

[0007] The replanting and metering device includes a replanting and metering trough, a replanting and metering wheel, a replanting and metering wheel baffle, a replanting and metering wheel motor, and a replanting channel pipe. The upper opening of the replanting and metering trough is connected to the filling port of the corresponding replanting and seed storage box, and the lower opening is connected to the upper part of the shell-shaped replanting and metering wheel baffle. The lower part of the replanting and metering wheel baffle is connected to the replanting channel pipe. The replanting and metering wheel is rotatably connected inside the replanting and metering wheel baffle and is driven to rotate at a set angle by the replanting and metering wheel motor installed on the replanting and metering wheel baffle. Multiple replanting and metering ports are evenly spaced on the rolling surface of the replanting and metering wheel. The replanting and metering wheel baffle blocks the side of the replanting and metering wheel that carries the seeds and leaves a gap smaller than the seed size between the baffle and the rolling surface of the replanting and metering wheel.

[0008] Its beneficial effect is that after sowing, the empty holes in the seed tray can be replanted one-to-one according to the sowing situation of the seed tray.

[0009] The seed storage box for replanting is provided with multiple diversion ramps at intervals, and the seed filling port of the seed storage box is provided between the diversion ramps.

[0010] Its beneficial effect is that the diversion slope can guide the seeds to the filling port of each seed storage box.

[0011] The seed storage box for replanting is equipped with a seed stirring device, which includes a rotating stirring shaft and stirring blades mounted on the stirring shaft.

[0012] Its beneficial effects are: the seed stirring device can further promote the uniform dispersion of seeds and prevent seeds from accumulating in one place inside the box.

[0013] The outside of the seed storage box is also equipped with a vibration motor for the seed storage box.

[0014] Its beneficial effects are: the combined use of the seed box vibration motor and the seed stirring device can better promote the dispersion and flow of seeds.

[0015] The replanting device also includes a replanting device fixing plate, which is fixed on the frame. The replanting channel pipe of the replanting and seeding device passes downward through the replanting device fixing plate and is fixed on the replanting device fixing plate.

[0016] Its beneficial effects are: the seed replenishment device fixing plate can be used to fix the seed replenishment and seed discharge device, ensuring that the seed replenishment channel pipe is in a vertical state, which is conducive to the rapid discharge of seeds.

[0017] The sowing device includes a seed storage box and a roller-type seed metering device. The seed storage box is provided with multiple seed storage box diversion plates, which extend downward to the seed metering groove at the bottom of the box to form multiple seed metering openings. The roller-type seed metering device includes a seed metering roller with multiple seed intake openings and a seed metering device baffle. The seed metering roller is rotatably mounted on the frame. The seed metering device baffle is an arc-shaped plate that covers the seed-filled side of the seed metering roller. A seed metering opening for sowing is formed between the lower edge of the seed metering device baffle and the seed metering roller. A seed filling groove corresponding to the seed metering groove is provided on the upper part of the seed metering device baffle.

[0018] Its beneficial effects are: the seeding device of the present invention, through the combination of the seed storage box diversion plate, the seed metering trough and the roller seed metering device, can reduce the occurrence of missed seeding during seed sowing.

[0019] The sowing device also includes a seed storage box lateral moving device, which is used to drive the seed storage box to move laterally back and forth, and to drive the seed discharge trough to move back and forth in the seed filling trough.

[0020] Its beneficial effects are: during the process of the seed storage box moving horizontally, the seed dispensing trough moves back and forth in the seed filling trough, the seed taking port can hold two seeds. If there are less than two seeds in the seed taking port, the nearby seeds can be pushed to fill the seed taking port as the seed dispensing trough moves. Therefore, this design can realize double seed filling at the seed taking port.

[0021] The seed storage box lateral movement device includes a seed storage box lateral movement support shaft, a seed storage box displacement support plate, and a lateral movement drive mechanism. The seed storage box lateral movement support shaft is fixed to both sides of the seed storage box and slidably supported on the seed storage box bracket. The seed storage box displacement support plate is located on the outside of the seed storage box, and a strip-shaped seed storage box displacement groove is provided on the seed storage box displacement support plate. The lateral movement drive mechanism includes a seed storage box displacement motor and a motor bracket for fixing the seed storage box displacement motor. The motor bracket is fixed on the frame, and an eccentric wheel with an eccentric wheel rod is installed on the output shaft of the seed storage box displacement motor. The eccentric wheel rod is inserted into the seed storage box displacement groove, converting the rotational motion of the eccentric wheel into the lateral reciprocating linear motion of the seed storage box.

[0022] Its beneficial effects are: it proposes a mechanism for realizing the lateral movement of the seed storage box, which uses the cooperation of the eccentric wheel and the displacement groove of the seed storage box to convert the rotational motion of the eccentric wheel into the lateral reciprocating linear motion of the seed storage box.

[0023] The seeding device is also equipped with a seed metering photoelectric sensor for monitoring the seed metering status of the roller seed meterer and a seeding photoelectric sensor for monitoring whether the seed tray has reached below the seed metering baffle.

[0024] The beneficial effects are: improved automation level of the entire device and accuracy of seeding.

[0025] A method for precision seeding and replanting of rice, the method employing the aforementioned precision seeding and replanting device for rice, includes the following steps:

[0026] Step 1: The seed trays to be sown are transported by the seed tray conveyor. When the seed trays reach the sowing area below the seed storage box, the roller seed metering device rotates, and the seeds from the seed collection port fall into the holes of the seed tray below through the seed metering device baffle. During the rotation of the roller seed metering device, the seed storage box moves horizontally back and forth, realizing double seed filling at the seed collection port on the seed metering roller.

[0027] Step 2: When the seed trays pass through the seed storage identification and positioning device after sowing, the industrial camera collects the sowing information of the seed trays, and the control system of the device calculates the location information of the empty holes, providing a basis for the reseeding device to reseed.

[0028] Step 3: When the photoelectric sensor detects that the seed tray has entered the seeding area, the seeding device corresponding to the seeding hole that needs to be seeded enters the preparation stage. The seeding wheel motor drives the seeding wheel to rotate. When the seeding hole that needs to be seeded moves directly below the seeding channel tube of the seeding device, the seeds discharged by the seeding wheel enter the seeding hole that needs to be seeded through the seeding channel tube.

[0029] The beneficial effects of the present invention are: the replanting device of the present invention can realize one-to-one replanting of the seed tray, thereby solving the problem of high empty seed rate caused by low precision of the seeding device.

[0030] This invention can be used to improve existing precision rice sowing devices by adding the reseeding device and seed storage identification and positioning device proposed in this invention to the existing precision sowing device, so as to achieve precise reseeding of seed trays without changing the precision sowing structure; it can also be used as a comprehensive device that integrates a precision rice sowing device, a seed storage identification and positioning device and a reseeding device, with a high degree of integration and automation. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This is a schematic diagram of the overall structure of the replanting device of the present invention;

[0033] Figure 2 This is a schematic diagram of the overall structure of the present invention at the seeding device end;

[0034] Figure 3 This is a front view of the overall structure of the present invention;

[0035] Figure 4 This is a schematic diagram of the seed storage box in this invention;

[0036] Figure 5 This is a schematic diagram of the bottom structure of the seed storage box in this invention;

[0037] Figure 6 This is a schematic diagram of the seeding and metering device in this invention;

[0038] Figure 7 This is a detailed structural diagram of the seeding and metering device in this invention;

[0039] Figure 8 This is a schematic diagram of the seed storage box for replanting in this invention;

[0040] Figure 9 This is a schematic diagram showing the distribution of the replanting and seeding outlets in the replanting storage box of the present invention;

[0041] Figure 10 This is a schematic diagram of the replanting and seeding device in this invention;

[0042] Figure 11 This is a schematic diagram from another perspective of the replanting and seeding device in this invention;

[0043] Figure 12 This is a schematic diagram showing the distribution of the seeding and metering device relative to the seed tray in this invention;

[0044] Figure 13 This is a top view of the acupuncture plate in this invention;

[0045] The diagram shows the following components: 1. Seeding and storage box; 2. Seeding box distribution plate; 3. Seed tray; 4. Frame; 5. Conveyor belt; 6. Pulley; 7. Pulley shaft; 8. Wheel; 9. Pulley shaft drive gear; 10. Seed metering photoelectric sensor; 11. Seed storage box lateral support shaft; 12. Re-seeding and storage box; 13. Seed storage box vibration motor; 14. Seed metering device baffle; 15. Roller-type seed metering device; 16. Seed picking hole; 17. Pulley bearing seat; 18. Roller-type seed metering device bearing seat; 19. Re-seeding and seed metering wheel motor bracket; 20. Seeding photoelectric sensor; 21. 21. Power gear of roller seed metering device; 22. Photoelectric sensor for replanting; 23. Seed storage box bracket; 24. Replanting box bracket; 25. Motor bracket; 26. Seed storage box displacement groove; 27. Seed storage box displacement support plate; 28. Seed storage box displacement motor; 29. ​​Seed metering device baffle filling port; 30. Eccentric wheel rod; 31. Eccentric wheel; 32. Replanting device fixing plate; 33. Motor fixing bracket; 34. Seed metering device baffle seed dispensing port; 35. Seed storage box seed dispensing port; 36. Industrial camera; 37. Industrial camera bracket; 38. Industrial camera fixing bracket; 39. Seed stirring device. 40. Power gear of seed mixing device; 41. Bearing seat of seed mixing device; 42. Seed replenishment and seed dispensing trough; 43. Seed replenishment and seed dispensing wheel; 44. Seed replenishment and seed dispensing wheel baffle; 45. Seed replenishment and seed dispensing wheel motor; 46. Seed replenishment and seed storage box filling port; 47. Seed replenishment channel pipe; 48. Photoelectric sensor bracket; 49. Seed replenishment box vibration motor; 50. Diverting inclined plane; 51. Seed replenishment and seed dispensing port; 52. Seed dispensing trough; 53. Filling trough; 54. Seed dispensing roller. Detailed Implementation

[0046] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the invention in any way.

[0047] Example 1: A precision rice sowing and reseeding device includes a frame 4, a sowing device, a seed storage identification and positioning device, a reseeding device, and a seed tray conveying device mounted on the frame 4, which can realize precision sowing and reseeding of hybrid rice.

[0048] like Figure 1 , 2 As shown, the seed tray conveying device adopts belt conveying. A pulley shaft 7 with a pulley 6 is rotatably mounted on the frame 4. A conveyor belt 5 is mounted on the pulley 6. The pulley shaft 7 is connected to the power gear 9 through the pulley shaft, which drives the conveyor belt 5 to move at a constant speed. The seed tray 3 moves at a constant speed under the action of the conveyor belt 5, and passes through the sowing device, the seed storage identification and positioning device and the reseeding device in sequence to complete the sowing and reseeding.

[0049] The sowing device, seed storage identification and positioning device, and reseeding device are arranged sequentially on the upper part of the frame along the conveying direction of the seed tray, and the lower part of the frame 4 is equipped with wheels 8 to facilitate the movement of the entire device.

[0050] The sowing device is used to achieve precise sowing of rice seeds and can employ commonly used precision sowing devices in this field. This embodiment mainly provides a detailed description of the settings of the seed storage identification and positioning device and the reseeding device.

[0051] The seed storage identification and positioning device is mainly used to obtain the sowing status on the seed tray 3 and the location information of empty holes on the seed tray 3, providing a basis for subsequent reseeding and achieving precise reseeding. Figure 2 As shown, the seed storage identification and positioning device includes an industrial camera 36, ​​an industrial camera bracket 37, and an industrial camera mounting frame 38. The column of the industrial camera mounting frame 38 is fixed to the frame 4, and the industrial camera bracket 37 is connected to the crossbeam of the industrial camera mounting frame 38. The industrial camera 36 is fixedly mounted on the industrial camera bracket 37. After the seed tray 3 completes the first stage of sowing, it passes under the industrial camera 36 at a constant speed with the conveyor belt 5. At this time, the industrial camera 36 collects the sowing information on the seed tray 3, calculates the position information of the empty holes on the seed tray 3 through the connected control system, and then transmits the number of empty rows and the position information of the empty holes that need to be re-sown to the re-sowing device for re-sowing.

[0052] like Figure 1-3 As shown, the replanting device includes a replanting seed storage box 12, a replanting seed dispensing device, and a replanting photoelectric sensor 22. The replanting seed storage box 12 is fixed on a replanting box support 24, which is fixed on both sides of the frame 4, allowing the seed tray 3 to pass under the replanting seed storage box 12. A replanting device fixing plate 32, fixed to the frame 4, is also provided below the replanting seed storage box 12. The lower surface of the replanting device fixing plate 32 is higher than the upper edge of the seed tray 3 to ensure smooth passage of the seed tray 3. The replanting seed dispensing device is fixed to the replanting device fixing plate 32. The replanting seed dispensing groove 42 at the upper end of the replanting device is connected to the replanting seed storage box 12, and the replanting channel pipe at the lower end passes downward through the replanting device fixing plate 32 for replanting empty holes in the seed tray 3. The replanting photoelectric sensor 22 is mounted on the frame 4 via a photoelectric sensor bracket 48 and is used to detect whether the seed tray 3 has entered the replanting area below the replanting seed storage box 12.

[0053] The structure of the seed storage box 12 is as follows: Figure 8 , 9 As shown, multiple spaced diversion slopes 50 are provided on the bottom of the seed storage box 12 inside the box. Multiple seed filling ports 46 of the seed storage box are provided between the diversion slopes 50. The number of seed filling ports 46 of the seed storage box corresponds to the number of holes on the seed tray. The diversion slopes 50 can be used to disperse the seeds in the box and guide the seeds to flow to the seed filling ports 46 of the seed storage box.

[0054] To accurately replant empty holes in the seed trays, each seed filling port 46 of the seed storage box is connected to one of the aforementioned seed filling and discharging devices, and the multiple seed filling ports 46 of the seed storage boxes are arranged according to a certain pattern, such as... Figure 9 As shown, multiple replanting seed storage box filling ports 46 are distributed on the seed-laying plane formed between two diversion slopes 50. In this embodiment, a total of 15 replanting seed storage box filling ports 46 are provided, distributed on 4 seed-laying planes and staggered, corresponding to the 15 rows of holes on the seed tray. Specifically, the 15 replanting seed storage box filling ports 46 are respectively labeled as filling port 1 46-1, filling port 2 46-2, ..., filling port 15 46-15. Filling port 46-1 corresponds to the first row of holes on the seed tray 3 and is used for replanting the empty holes in the first row of holes. Filling port 46-2 corresponds to the second row of holes on the seed tray and is used for replanting the empty holes in the second row of holes, and so on. Each filling port is used for replanting a corresponding row of holes. The arrangement of holes on the seed tray 3 is as follows. Figure 13 As shown.

[0055] To ensure better seed entry into the seed dispensing device within the seed storage box 12, several seed stirring devices 39 are installed inside the seed storage box 12, and a seed box vibration motor 49 is installed outside the seed storage box 12. This embodiment includes two seed stirring devices 39, each comprising a stirring shaft and stirring blades mounted on the shaft. Both ends of the seed stirring device 39 are rotatably supported on seed stirring device bearing seats 41. One end of each seed stirring device 39 is also equipped with a seed stirring device power gear 40 for connection to an external power source to provide rotational torque.

[0056] Rice seeds are placed into the seed storage box 12. Under the stirring of the seed stirring device 39 and the vibration of the seed storage box vibration motor 49 outside the seed storage box 12, the rice seeds flow along the diversion slope inside the seed storage box 12 through the 15 seed filling ports 46 at the bottom of the seed storage box 12 and enter the seed filling trough 42 of the corresponding seed filling device.

[0057] The structure of the aforementioned replanting and seeding device can be referred to as follows: Figure 10-12 As shown, it includes a replanting and seed metering trough 42, a replanting and seed metering wheel 43, a replanting and seed metering wheel baffle 44, a replanting and seed metering wheel motor 45, and a replanting channel pipe 47. Figure 10 , 11As shown, the replanting and seed-discharging groove 42 is a wedge-shaped groove that is larger at the top and smaller at the bottom. The upper opening of the replanting and seed-discharging groove 42 is connected to the seed filling port 46 of the seed storage box at the bottom of the seed storage box 12, and one side of the lower opening is connected to the replanting and seed-discharging wheel baffle 44. The replanting and seed-discharging wheel baffle 44 is a housing, and the replanting and seed-discharging wheel 43 is rotatably supported inside the replanting and seed-discharging wheel baffle 44. The replanting and seed-discharging wheel 43 is driven to rotate by the replanting and seed-discharging wheel motor 45 located on the outside of the replanting and seed-discharging wheel baffle 44. The replanting and seed-discharging wheel motor 45 is a servo motor. Multiple replanting and seed-discharging ports 51 are evenly distributed along the circumference on the rolling surface of the replanting and seed-discharging wheel 43. In this embodiment, there are 6 replanting and seed-discharging ports 51. During rotation, each seed outlet 51 aligns sequentially with the lower opening of the seed outlet 42, and the seeds enter the seed outlet 51 through the seed outlet 42. The seed outlet baffle 44 blocks the seed-bearing side of the seed outlet 43 and leaves a gap smaller than the seed size between it and the rolling surface of the seed outlet 43. This prevents the seeds from falling out of the seed outlet 51 and ensures the rotation of the seed outlet 43. The upper edge of the seed outlet 47 is connected to the seed outlet baffle 44. When the seed outlet 51 carrying the seeds on the seed outlet 43 rotates to the upper opening of the seed outlet 47, the seeds fall into the seed outlet 47 due to gravity, thus replanting the empty holes in the seed tray 3.

[0058] Each of the aforementioned replanting and seeding devices is connected not only to the upper replanting and seeding trough 42 and the replanting and seeding storage box filling port 46 of the replanting and seeding box 12, but also to the lower replanting channel pipe 47, which corresponds to a row of holes in the seed tray. The specific arrangement is as follows: Figure 12 As shown, this embodiment has a total of 15 seed filling ports 46 for replanting and storage boxes, and therefore also 15 replanting and distributing devices, which are respectively defined as the first replanting and distributing device a1, the second replanting and distributing device a2, ..., the 15th replanting and distributing device a15. The replanting and distributing groove 42 of the first replanting and distributing device a1 is connected to the first filling port 46-1 and is used to replant the empty holes in the first row of holes on the seed tray. The replanting and distributing groove 42 of the second replanting and distributing device a2 is connected to the second filling port 46-2 and is used to replant the empty holes in the second row of holes on the seed tray 3, and so on.

[0059] When reseeding is needed, the reseeding photoelectric sensor 22 detects the seed tray, and the reseeding device begins one-to-one reseeding of each row according to the reseeding information issued by the system. After the empty holes on the seed tray that need to be reseeded are moved into place, the reseeding outlet 51 rotates with the reseeding wheel 43 to be directly above the reseeding channel tube 47. Rice seeds enter the empty holes from the reseeding outlet 51 through the reseeding channel tube 47, completing the reseeding. Once the reseeding of one seed tray is completed, the device completes one cycle.

[0060] The following examples of replanting will further illustrate the replanting device to better understand its working principle. It should be noted that before replanting begins, the lowest replanting port 51 of the replanting seed metering wheel 53 is aligned with the replanting channel tube 47, and this port 51 is empty. The wheel is then rotated to fill the lowest replanting port 51 with seeds, preparing to replant empty holes. The replanting seed metering wheel motor 45 is a servo motor. The rotation angle of the replanting seed metering wheel 53 is fixed and related to the number of replanting ports 51 on the wheel. For example, in this embodiment, there are 6 replanting ports 51. Therefore, the replanting seed metering wheel 53 rotates 60° each time. With each rotation, one replanting port 51 aligns with the replanting channel tube 47, and another aligns with the replanting seed groove 42, replenishing the holes with new seeds.

[0061] 1. The first row of acupoints on the acupoint plate has no empty acupoints.

[0062] After the seed tray enters the replanting area, when the seed tray hole of the first row passes through the corresponding first replanting and metering device a1, the replanting and metering wheel motor 45 of the first replanting and metering device a1 does not work, the replanting and metering wheel 43 does not rotate, and no replanting operation is performed.

[0063] 2. The third hole in the second row of holes on the acupuncture plate is an empty hole.

[0064] When the photoelectric sensor 22 detects that the seed tray 3 has entered the replanting area, the second replanting and seeding device a2 corresponding to the second row of seed holes enters the preparation stage. The replanting and seeding wheel motor 45 operates, driving the replanting and seeding wheel 43 to rotate. When the third hole in the second row of seed holes in the seed tray moves directly below the replanting channel tube 47 of the second replanting and seeding device a2, the seeds in the seeding wheel 43, which is loaded with seeds and located at the bottom of the seeding opening 51, enter the hole through the seeding channel tube 47, completing the replanting work for the third hole in that row. After the seeding wheel 43 rotates and seedes, the seeds in the seeding groove 42 automatically fall into the top seeding opening 51.

[0065] 3. In the third row of acupoints on the acupoint plate, the first and second holes are both empty.

[0066] When the photoelectric sensor 22 detects that the seed tray 3 has entered the seeding area, the third seeding device a3 corresponding to the third row of seed holes enters the preparation stage. The seeding wheel motor 45 works, driving the seeding wheel 43 to rotate. When the first hole of the third row of seed holes in the seed tray moves directly below the seeding channel tube 47 of the third seeding device a3, the seed in the seeding outlet 51 at the bottom of the seeding wheel 43, which is loaded with seeds, enters the hole through the seeding channel tube 47, completing the seeding work of the first hole in the row.

[0067] The replanting wheel motor 45 continues to operate, driving the replanting wheel 43 to rotate once more. When the second hole in the third row of the seed tray moves directly below the replanting channel pipe 47 of the third replanting device a3, the seed in the lowest replanting port 51 on the replanting wheel 43, which contains seeds, enters the hole through the replanting channel pipe 47, completing the replanting work for the second hole in that row. At this point, the replanting work for the third row of the seed tray is complete, and no further replanting is performed in this cycle.

[0068] Each time the seed metering wheel 43 rotates and meters seeds, the seeds in the seed metering trough 42 automatically fall into the uppermost seed metering opening 51.

[0069] 4. The 4th and 9th holes in the 4th row of the acupuncture plate are empty.

[0070] When the photoelectric sensor 22 detects that the seed tray 3 has entered the seeding area, the fourth seeding device a4 corresponding to the fourth row of seed holes enters the preparation stage. The seeding wheel motor 45 works, driving the seeding wheel 43 to rotate. When the fourth hole in the fourth row of seed holes in the seed tray moves directly below the seeding channel tube 47 of the fourth seeding device a4, the seed in the seeding wheel 43, which is loaded with seeds and located at the bottom of the seeding port 51, enters the hole through the seeding channel tube 47, completing the seeding work of the fourth hole in the row.

[0071] After the replanting and metering device a4 stops working for the time it takes to move four holes, the motor 45 of the replanting and metering wheel resumes operation, driving the replanting and metering wheel 43 to rotate. When the 9th hole in the 4th row of holes in the seed tray moves directly below the replanting channel tube 47 of the 4th replanting and metering device a4, the seed loaded with seeds on the replanting and metering wheel 43, located at the bottom of the replanting and metering port 51, enters the hole through the replanting channel tube 47, completing the replanting work for the 9th hole in that row. At this point, the replanting work for the 4th row of the seed tray is complete, and no further replanting work is performed in this cycle.

[0072] The process of replanting empty holes in other holes on the seed tray can be deduced similarly, and will not be elaborated here.

[0073] Example 2: This example, based on Example 1, provides a detailed description of the setup of the seeding device, including its structure. Figure 1-7 .

[0074] The sowing device includes a seed storage box 1, a roller seed metering device 15, and a transverse moving device for the seed storage box.

[0075] The seed storage box 1 is used to fill the roller seed metering device 15 with seeds, and its structure is as follows: Figure 4 , 5 As shown, the seed storage box 1 is provided with multiple seed storage box diversion plates 2 spaced apart along the width of the box. The seed storage box diversion plates 2 extend downward to the seed discharge groove 52 at the bottom of the seed storage box 1 and are flush with the lower edge of the seed discharge groove 52. Seed storage box seed discharge openings 35 are formed between adjacent seed storage box diversion plates 2. In this embodiment, two parallel seed discharge grooves 52 are provided at the bottom of the seed storage box 1. Therefore, the seed storage box 1 has two rows of seed storage box diversion plates 2 and two rows of seed storage box seed discharge openings 35.

[0076] like Figure 1 , 7 As shown, the roller-type seed metering device 15 includes a seed metering roller 54 and a seed metering device baffle 14. The seed metering roller 54 is mounted on bearings of a roller-type seed metering device bearing seat 18 at both ends. The roller-type seed metering device bearing seat 18 is located on both sides of the frame 4. One end of the seed metering roller 54 is also equipped with a roller-type seed metering device power gear 21 for power connection. Multiple rows of seed-taking ports 16 are spaced circumferentially on the cylindrical surface of the seed metering roller 54. The number of seed-taking ports 16 in each row is the same as the number of seed-taking ports 35 in a row of seed storage boxes, and they correspond one-to-one. The seed metering device baffle 14 is arc-shaped and fixed to the frame 4 or to a bracket for mounting the seed storage box 1. The seed metering device baffle 14 covers the seed-filled side of the seed metering roller 54, and the gap between the seed metering device baffle 14 and the seed metering roller is smaller than the size of the seed, ensuring normal rotation of the seed metering roller 54 and preventing the seeds in the seed-taking ports 16 from falling out prematurely before sowing. Figure 7 As shown, the seed metering baffle 14 is also provided with a filling groove 53 corresponding to the seed metering groove 52 at the bottom of the seed storage box 1. In this embodiment, two seed metering grooves 52 are provided, therefore two filling grooves 53 are also provided on the seed metering baffle 14. The length of the filling groove 53 is greater than the length of the corresponding seed metering groove 52, so that the seed metering groove 52 can move back and forth within the filling groove 53. When the seed metering roller 54 rotates so that the two rows of seed outlets 16 enter the corresponding positions of the two filling grooves 53 respectively, the seeds of the seed storage box 1 fill the two rows of seed outlets 16 through the seed metering box seed outlet 35 of the seed metering groove 52. Figure 6As shown, the lower edge of the seed metering baffle 14 and the seed metering roller 54 form a seed metering baffle discharge port 34 for seed discharge. When the seed taking port 16 of the seed metering roller 54 rotates to this position, the seeds will lose the obstruction of the seed metering baffle 14 and automatically fall into the seed tray 3 below, realizing the sowing operation.

[0077] To ensure the effective filling of the seed outlets 16 (i.e., two seeds per outlet 16), the seed storage box 1 can reciprocate laterally, allowing the seed discharge trough 52 of the seed storage box 1 to reciprocate within the filling trough 53. In this invention, the lateral reciprocating movement of the seed storage box 1 is achieved by setting a lateral moving device for the seed storage box.

[0078] like Figure 2-7 As shown, the seed storage box lateral movement device includes a seed storage box lateral movement support shaft 11, a seed storage box displacement support plate 27, and a lateral movement drive mechanism. The seed storage box lateral movement support shaft 11 is fixedly installed on the left and right side plates of the seed storage box 1 and slidably supported on the seed storage box bracket 23. The seed storage box displacement support plate 27 is horizontally fixed to the outside of the seed storage box 1. A seed storage box displacement groove 26 is provided on the seed storage box displacement support plate 27. The seed storage box displacement groove 26 is elongated and its length direction is perpendicular to the lateral movement direction of the seed storage box 1. The lateral movement drive mechanism includes a seed storage box displacement motor 28 and a motor bracket 25. The motor bracket 25 is fixed on the frame 4, and the seed storage box displacement motor 28 is fixed on the motor bracket 25. An eccentric wheel 31 is installed on the output shaft of the seed storage box displacement motor 28, and the eccentric wheel rod 30 of the eccentric wheel 31 is inserted into the seed storage box displacement groove 26. After the seed storage box displacement motor 28 rotates, the eccentric wheel rod 30 of the eccentric wheel 31 drives the seed storage box 1 to move laterally back and forth through the seed storage box displacement groove 26.

[0079] The lateral reciprocating movement of the seed storage box 1 ensures both double-seed filling by the roller seed metering device 15 and smooth seed discharge from the box. Furthermore, a seed storage box vibration motor 13 can be installed on the outside of the seed storage box 1. As the seed storage box 1 moves laterally, the vibration motor 13 vibrates the box body, allowing the seeds to flow smoothly into the seed discharge port 35.

[0080] Furthermore, a seed metering photoelectric sensor 10 for monitoring the seed metering status of the roller seed metering device 15 is also provided on the bearing seat 18 of the roller seed metering device.

[0081] Furthermore, a seeding photoelectric sensor 20 is also installed at the seeding port 34 of the seeding baffle at the lower end of the roller seed meterer 15. The seeding photoelectric sensor 20 is fixed on the photoelectric sensor bracket 48 of the frame. When the seed tray moves to the seeding port 34 of the seed meterer baffle via the conveyor belt 5, the photoelectric sensor 20 detects the signal of the seed tray, and the seeding roller 54 of the roller seed meterer 15 rotates to start the seeding operation.

[0082] After the seed trays are sown, the seed trays are identified and positioned by a seed storage identification device. An industrial camera collects the sowing information on the seed trays. The control system of the device calculates the location information of the empty holes and controls the replanting device to perform replanting. The specific replanting process can be referred to in Example 1.

[0083] Example 3: A method for precision rice sowing and reseeding, which utilizes the precision rice sowing and reseeding device proposed in Examples 1 and 2, specifically includes the following steps:

[0084] Step 1: The seed trays to be sown are transported by the seed tray conveyor. When the seed trays reach the sowing area below the seed storage box, the roller seed metering device rotates, and the seeds from the seed collection port fall into the holes of the seed tray below through the seed metering device baffle. During the rotation of the roller seed metering device, the seed storage box moves horizontally back and forth, realizing double seed filling at the seed collection port on the seed metering roller.

[0085] Step 2: When the seed trays pass through the seed storage identification and positioning device after sowing, the industrial camera collects the sowing information of the seed trays, and the control system of the device calculates the location information of the empty holes, providing a basis for the reseeding device to reseed.

[0086] Step 3: When the photoelectric sensor detects that the seed tray has entered the seeding area, the seeding device corresponding to the seeding hole that needs to be seeded enters the preparation stage. The seeding wheel motor drives the seeding wheel to rotate. When the seeding hole that needs to be seeded moves directly below the seeding channel tube of the seeding device, the seeds discharged by the seeding wheel enter the seeding hole that needs to be seeded through the seeding channel tube.

[0087] For a more detailed explanation of the replanting method in step three above, please refer to the corresponding description in Example 1.

[0088] The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Those skilled in the art should understand that modifications or equivalent substitutions can be made to the specific implementation of the present invention with reference to the above embodiments. Any modifications or equivalent substitutions that do not depart from the spirit and scope of the present invention are within the protection scope of the pending claims.

Claims

1. A precision rice sowing and reseeding device, comprising a frame (4), a sowing device, and a seed tray conveying device, wherein the sowing device and the seed tray conveying device are mounted on the frame (4), characterized in that: The seed storage and identification positioning device and the seed supplementing device are arranged in sequence along the conveying direction of the plug tray; The seed storage and identification positioning device comprises an industrial camera (36) for acquiring the seed planting condition on the plug tray (3) to provide a basis for the seed supplementing device; The seed supplementing device comprises a seed supplementing storage box (12), a seed supplementing seed metering device and a seed supplementing photoelectric sensor (22), the seed supplementing storage box (12) is arranged on the frame (4) and above the plug tray conveying device, the seed supplementing photoelectric sensor (22) is installed on the frame and used for detecting whether the plug tray (3) on the plug tray conveying device enters the seed supplementing area below the seed supplementing storage box (12); the seed supplementing storage box (12) is provided with a plurality of seed supplementing storage box seed filling ports (46), and the number of the seed supplementing storage box seed filling ports (46) corresponds to the number of the hole columns on the plug tray (3); each seed supplementing storage box seed filling port (46) is connected with one seed supplementing seed metering device, and each seed supplementing seed metering device corresponds to one column of holes on the plug tray (3) and supplements seeds to the empty holes in the column of holes; The seed supplementing seed metering device comprises a seed supplementing seed metering groove (42), a seed supplementing seed metering wheel (43), a seed supplementing seed metering wheel baffle (44), a seed supplementing seed metering wheel motor (45) and a seed supplementing channel pipe (47); the upper end of the seed supplementing seed metering groove (42) is connected with the corresponding seed supplementing storage box seed filling port (46), the lower end is connected with the upper part of the shell-shaped seed supplementing seed metering wheel baffle (44), the lower part of the seed supplementing seed metering wheel baffle (44) is connected with the seed supplementing channel pipe (47), the seed supplementing seed metering wheel (43) is rotationally connected in the seed supplementing seed metering wheel baffle (44) and is driven to rotate at a set angle by the seed supplementing seed metering wheel motor (45) installed on the seed supplementing seed metering wheel baffle (44); a plurality of seed supplementing seed metering ports (51) are uniformly and interval arranged on the rolling surface of the seed supplementing seed metering wheel (43), the seed supplementing seed metering wheel baffle (44) shields the side of the seed supplementing seed metering wheel (43) carrying seeds and leaves a gap smaller than the size of the seeds between the rolling surface of the seed supplementing seed metering wheel (43); The seed supplementing seed metering device comprises a seed supplementing seed metering groove (42), a seed supplementing seed metering wheel (43), a seed supplementing seed metering wheel baffle (44), a seed supplementing seed metering wheel motor (45) and a seed supplementing channel pipe (47); the upper end of the seed supplementing seed metering groove (42) is connected with the corresponding seed supplementing storage box seed filling port (46), the lower end is connected with the upper part of the shell-shaped seed supplementing seed metering wheel baffle (44), the lower part of the seed supplementing seed metering wheel baffle (44) is connected with the seed supplementing channel pipe (47), the seed supplementing seed metering wheel (43) is rotationally connected in the seed supplementing seed metering wheel baffle (44) and is driven to rotate at a set angle by the seed supplementing seed metering wheel motor (45) installed on the seed supplementing seed metering wheel baffle (44); a plurality of seed supplementing seed metering ports (51) are uniformly and interval arranged on the rolling surface of the seed supplementing seed metering wheel (43), the seed supplementing seed metering wheel baffle (44) shields the side of the seed supplementing seed metering wheel (43) carrying seeds and leaves a gap smaller than the size of the seeds between the rolling surface of the seed supplementing seed metering wheel (43); The seeding device further comprises a seed storage tank transverse moving device for driving the seeding seed storage tank to move transversely and reciprocally and driving the seed discharge groove (52) to move reciprocally in the seed filling groove (53).

2. The precision seeding and filling device for rice according to claim 1, characterized in that: A plurality of shunt inclined surfaces (50) are arranged in the middle of the seed supplementing seed storage tank (12), and the seed supplementing seed storage tank filling port (46) is arranged between the shunt inclined surfaces (50).

3. The precision seeding and filling device for rice according to claim 1, characterized in that: The seed supplementing seed storage tank (12) is provided with a seed stirring device (39), which comprises a rotating stirring shaft and stirring blades arranged on the stirring shaft.

4. The precision seeding and filling device for rice according to claim 3, characterized in that: The seed supplementing seed storage tank (12) is further provided with a seed supplementing tank vibration motor (49) on the outside.

5. The precision seeding and filling device for rice according to claim 1, characterized in that: The seed supplementing device further comprises a seed supplementing device fixing plate (32) fixed on the frame (4), and the seed supplementing channel pipe (47) of the seed supplementing device passes through and is fixed on the seed supplementing device fixing plate (32).

6. The precision seeding and filling device for rice according to claim 1, characterized in that: The seed storage tank transverse moving device comprises a seed storage tank transverse moving support shaft (11), a seed storage tank displacement support plate (27) and a transverse moving driving mechanism. The seed storage tank transverse moving support shaft (11) is fixed on both sides of the seeding seed storage tank (1) and is slidingly supported on the seed storage tank support (23). The seed storage tank displacement support plate (27) is arranged on the outside of the seeding seed storage tank (1), and a strip-shaped seed storage tank displacement groove (26) is arranged on the seed storage tank displacement support plate (27). The transverse moving driving mechanism comprises a seed storage tank displacement motor (28) and a motor support (25) for fixing the seed storage tank displacement motor (28). The motor support (25) is fixed on the frame (4), the output shaft of the seed storage tank displacement motor (28) is provided with an eccentric wheel (31) with an eccentric wheel rod (30), the eccentric wheel rod (30) is inserted into the seed storage tank displacement groove (26), and the rotary motion of the eccentric wheel (31) is converted into the transverse reciprocating linear motion of the seeding seed storage tank (1).

7. The precision seeding and filling device for rice according to claim 1, characterized in that: The seeding device is further provided with a seed discharge photoelectric sensor (10) for monitoring the seed discharge condition of the drum seed sower (15) and a seeding photoelectric sensor (20) for monitoring whether the plug tray (3) reaches below the seed sower baffle seed discharge port (34).

8. A precision sowing and replanting method for rice, characterized by, The method adopts the rice precision seeding and seed supplementing device of claim 1 and comprises the following steps. In step one, the plug tray (3) to be seeded is conveyed by the plug tray conveying device. When the plug tray (3) reaches the seeding area below the seeding seed storage tank (1), the drum seed sower (15) rotates, and the seeds in the seed taking port (16) fall into the hole of the plug tray (3) below through the seed sower baffle seed discharge port (34). In the process of the rotation of the drum seed sower (15), the seeding seed storage tank (1) moves transversely and reciprocally, so that the double-seed filling of the seed taking port (16) on the seed discharge drum (54) is realized. In step two, when the seeded plug tray (3) passes through the seed storage recognition and positioning device, the seeding condition of the plug tray (3) is collected by the industrial camera (36), the position information of the empty hole is calculated by the control system of the device, and the seed supplementing device is provided with the basis for seed supplementing. Step three, when the photoelectric sensor (22) detects that the plug (3) enters the plug area, the plug row corresponding to the hole that needs to be plugged enters the preparation stage, the plug row wheel motor (45) drives the plug row wheel (43) to rotate, and when the hole position of the plug (3) that needs to be plugged moves to the plug channel pipe (47) directly below the plug row, the seeds discharged by the plug row wheel (43) enter the hole position that needs to be plugged through the plug channel pipe (47).

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