The reseeding mechanism for reseeding at the sowing opening

Abstract

The present invention relates to the technical field of planters, and in particular to a reseeding mechanism for reseeding at the sowing opening. It includes a reseeding execution component, a missed-seed detection component, a seed storage pipe, a seed return pipe, a seed storage detection component, a seed storage execution component, and a seeder. The seed return pipe is located on one side of the seeder, the seed storage pipe is located below the seed return pipe, the seed storage detection component is located at the upper end of the seed storage pipe, the seed storage execution component is located at the upper right of the seed storage pipe and below the seed return pipe, and the missed-seed detection component is located at the lower right of the seed storage pipe and below the seed storage execution component. By using an infrared opposed photoelectric sensor to dynamically monitor the presence or absence of seed potatoes on the seed-taking spoon during the conveying process, and using the reseeding execution component to perform reseeding, there is no need to separately set up a reseeding box. The control system realizes reseeding when the spoon is empty, and timely reseeds into the seed furrow, avoiding situations such as missed reseeding and jamming that cause reseeding failure. The structure is simple and occupies little space, solving the problem of missed sowing of seed potatoes.

Description

Technical Field

[0001] The invention relates to the technical field of planters, and in particular to a replanting mechanism for replanting at a sowing port. Background Art

[0002] Sowing is a very important part of the crop planting process. Mechanical sowing often encounters problems of missed sowing and re-seeding, which requires manual assistance in seed cleaning and reseeding. Taking potato sowing as an example, most areas in my country usually use cut potatoes for sowing. The potato pieces are of different shapes and sizes. After cutting, disinfection and germination, a layer of powder adheres to the surface of the seed potatoes. The existing potato planter reseeding technology uses infrared light reflection technology to detect whether the seed meter has taken seeds, which has the problem of inaccurate seed potato detection. In addition, the potato planter has a fast forward speed during sowing, generally at 0.6m / s-0.8m / s. The existing reseeding technology usually uses a method of taking seeds similar to seeding and relying on gravity to make the seed potatoes slide to the seed spoon for reseeding. In actual applications, there are problems such as missed seeding, jamming, and reseeding failure, unreliability, or even impracticability.

[0003] The existing invention patent is a potato intelligent replanting machine with missed planting detection and replanting function (CN214070620U), which solves the problem of eliminating missed planting, realizing one-time operation of hole-free sowing, ridge covering and film covering with missed planting detection and compensation functions, and improves the utilization rate of land resources, production quality and production efficiency. However, there are still the following defects:

[0004] 1. Seed potatoes are usually disinfected and germinated, and a layer of powder adheres to their surface; the method of relying on a single infrared photoelectric sensor to receive infrared light reflection signals to detect missing seeds will lead to detection failure.

[0005] 2. The reseeding device and the seeding device are similar in structure. Since there is a possibility of missing seeds when the seeding device takes seeds, the reseeding mechanism may also miss seeds, which will also lead to the failure of reseeding. In addition, a reseeding device is added to the existing potato seeding device, and the seed potatoes in the reseeding box need to be added manually, which increases the structure of the machine and makes it larger in size, which is not suitable for use in small fields in hilly and mountainous areas.

[0006] 3. The reseeding device adopts a structure similar to that of the seeding device, which increases the size of the whole machine and has a repeated and complex structure.

[0007] There is an existing invention patent for an intelligent reseeding device for a potato metering device (CN107750550A), which enables the auxiliary sensor 32 to control the main shaft drive motor 36 and the shutter drive motor 31 of the auxiliary seed taking device 3 through the control system 4. After lifting the potato seeds from the seed box 1, they slide through the shutter 33 and fall between the seed separators 22 of the corresponding seed channels of the reseeding device 2, preparing for when the main metering device 6 needs reseeding; during the sowing process of the potato planter, the main metering device 6 scoops up potato seeds 7 from the seed box 1 through the seed supporting spoons 8. Due to jolts during sowing or other reasons, some of the seed supporting spoons 8 do not have potato seeds 7. The industrial camera 5 collects the image information of the seed supporting spoons 8 and transmits it to the control system 4. The control system 4 calculates and analyzes to make the reseeding drive motor of the corresponding seed channel of the reseeding device 2 respond. The drive motor drives the seed separator 22 to move to the right, pushing the potato seeds 7 to slide from the left seed channel reseeding groove 28 or the right seed channel reseeding groove 27 onto the seed supporting spoons at the corresponding seed channel positions of the main metering device 6, completing the reseeding operation for the missing seeds in the seed supporting spoons on the main metering device, thereby reducing the missing sowing rate of the potato planter;

[0008] There are the following disadvantages:

[0009] 1. According to application practices, when sowing potatoes, the forward speed of the machine is usually between 0.6 m / s - 0.8 m / s, that is, the chain drive speed is very fast. The time for the seeds to slide from the seed channel reseeding groove is uncontrollable. It is very difficult to ensure that the seeds can be replenished to the missing seed supporting spoons, and accurate reseeding cannot be achieved. It is also easy to cause machine jams.

[0010] 2. Using the method of industrial camera and image processing to detect whether there are potato seeds in the seed supporting spoons, it is very difficult for the sensitivity and accuracy of the sampling, processing, and control of the detection system to meet the actual production requirements. The control system has a high cost, a complex structural configuration, and low reliability.

[0011] 3. Structurally, the addition of the auxiliary seed taking device and the reseeding device also increases the machine size and structural complexity.

[0012] In summary, to overcome the deficiencies of the existing technology and address the many problems existing in the existing reseeding technology, including unreliable reseeding effects, inaccurate seed detection, and the similarity between the reseeding device and the metering device, which increases the volume and complexity of the planter. Therefore, we designed a reseeding mechanism for reseeding at the sowing port to provide another technical solution to the above technical problems. Summary of the Invention

[0013] The purpose of the present invention is to provide a reseeding mechanism for reseeding at the sowing port. Generally speaking, it is aimed at the technical problems raised in the above background technology

[0014] To solve the above technical problems, the present invention adopts the following technical solutions:

[0015] The reseeding mechanism for reseeding at the seeding opening includes a reseeding execution component, a missed-seed detection component, a seed storage pipe, a seed return pipe, a seed storage detection component, a seed storage execution component, and a seeder. The seed return pipe is located on one side of the seeder. The seed storage pipe is located below the seed return pipe. The seed storage detection component is located at the upper end of the seed storage pipe. The seed storage execution component is located in the upper right of the seed storage pipe and below the seed return pipe. The missed-seed detection component is located in the lower right of the seed storage pipe and below the seed storage execution component. The reseeding execution component is located below the missed-seed detection component.

[0016] Preferably, the seeder includes a housing, a seeding opening, a seed cleaning area, a seed box, and a seed taking spoon. A seed cleaning area is provided at the top of the housing. A seeding opening is provided at the bottom of the housing. Seed taking spoons are evenly arranged inside the housing. A seed box is fixed to the bottom of one end of the housing.

[0017] Preferably, the seed return pipe is fixed to the housing. A seed storage opening is provided on the side surface in the middle of the seed return pipe. The top end of the seed return pipe is connected to the seed cleaning area. The bottom end of the seed return pipe is fixed to the seed box.

[0018] Preferably, the seed storage pipe is fixed to the housing. The top end of the seed storage pipe is connected to the seed storage opening. A through groove is provided on the side surface of the top end of the seed storage pipe. A reseeding outlet is provided inside the bottom end of the seed storage pipe.

[0019] Preferably, the reseeding execution component includes a reseeding push rod seat, a reseeding push rod, and a reseeding door. The reseeding push rod seat is fixed to the housing. A reseeding push rod is fixed to the bottom end of the reseeding push rod seat. A reseeding door is fixed to the push rod of the reseeding push rod. The reseeding door is located inside the reseeding outlet, and the reseeding door is slidably connected to the reseeding outlet on the seed storage pipe.

[0020] Preferably, the missed-seed detection component includes a missed-seed detection sensor mounting seat, a missed-seed detection sensor, and a seed taking spoon detection sensor. There are two missed-seed detection sensor mounting seats, which are symmetrically fixed to both sides of the housing respectively. Two long holes are provided on the missed-seed detection sensor mounting seat. A missed-seed detection sensor is fixed inside one of the long holes, and a seed taking spoon detection sensor is fixed inside the other long hole.

[0021] Preferably, the seed storage detection component includes a seed storage detection sensor and a seed storage detection sensor mounting seat. There are two seed storage detection sensor mounting seats, and the two seed storage detection sensor mounting seats are symmetrically fixed to both sides of the top end of the seed storage pipe. A positioning hole is provided inside the seed storage detection sensor mounting seat, and a seed storage detection sensor is fixed inside the positioning hole.

[0022] Preferably, the seed storage execution component includes a seed storage push rod seat, a seed storage push rod, and a seed storage door. The seed storage push rod seat is fixed to the outer shell. A seed storage push rod is fixed to the seed storage push rod seat. A seed storage door is fixed to the push rod of the seed storage push rod. The seed storage door is located inside the through groove.

[0023] Preferably, it further includes a control system. The control system includes a 12V power supply, a drive module, an optocoupler converter, a buck module, and a single-chip microcomputer.

[0024] The 12V power supply is respectively connected to the drive module, the optocoupler converter, and the buck module.

[0025] The buck module is used to convert the 12V voltage into a 5V voltage to supply power to the single-chip microcomputer.

[0026] The optocoupler converter converts the detected 12V signal into a 5V signal acceptable to the single-chip microcomputer through a signal line and transmits it to the single-chip microcomputer.

[0027] The single-chip microcomputer is connected to the drive module and transmits a control signal to the drive module.

[0028] The drive module is respectively connected to and controls the reseeding push rod and the seed storage push rod to perform corresponding actions.

[0029] Preferably, the model of the single-chip microcomputer is STM32F411CE.

[0030] It can be undoubtedly seen that through the above technical solutions of this application, the technical problems to be solved by this application can surely be solved.

[0031] Meanwhile, through the above technical solutions, the present invention has at least the following beneficial effects:

[0032] By adopting an infrared pair-emitting photoelectric sensor in the present invention to dynamically monitor whether there are seed potatoes on the seed-taking spoon during the conveying process, and using the reseeding execution component for reseeding, there is no need to separately set up a reseeding box. Reseeding is realized through the control system when the spoon is empty, and it is timely reseeded into the seed furrow, avoiding situations such as missed reseeding and blockage, which are reseeding failures. The structure is simple and occupies little space, solving the problem of missed seeding of seed potatoes. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0034] Figure 1 It is a schematic structural diagram of the present invention;

[0035] Figure 2This is a partial cross-sectional view of the present invention;

[0036] Figure 3 This is a schematic structural diagram of the present invention viewed from the upper right front;

[0037] Figure 4 This is a schematic structural diagram of the present invention viewed from the left front side;

[0038] Figure 5 This is a control schematic diagram of the present invention.

[0039] In the figure: 1. Replanting execution component; 11. Replanting push rod seat; 12. Replanting push rod; 13. Replanting door; 2. Missed seed detection component; 21. Missed seed detection sensor mounting seat; 22. Missed seed detection sensor; 23. Seed taking spoon detection sensor; 3. Seed storage pipe; 4. Seed return pipe; 5. Seed storage detection component; 51. Seed storage detection sensor; 52. Seed storage detection sensor mounting seat; 6. Seed storage execution component; 61. Seed storage push rod seat; 62. Seed storage push rod; 63. Seed storage door; 7. Seeder; 71. Housing; 72. Sowing opening; 73. Seed cleaning area; 74. Seed box; 75. Seed taking spoon. Detailed implementation manners

[0040] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0041] Refer to Figures 1 - 5 , the replanting mechanism for replanting at the sowing opening includes a replanting execution component 1, a missed seed detection component 2, a seed storage pipe 3, a seed return pipe 4, a seed storage detection component 5, a seed storage execution component 6 and a seeder 7. The seed return pipe 4 is located on one side of the seeder 7, the seed storage pipe 3 is located below the seed return pipe 4, the seed storage detection component 5 is located at the upper end of the seed storage pipe 3, the seed storage execution component 6 is located at the upper right of the seed storage pipe 3 and below the seed return pipe 4, the missed seed detection component 2 is located at the lower right of the seed storage pipe 3 and below the seed storage execution component 6, and the replanting execution component 1 is located below the missed seed detection component 2;

[0042] The seeder 7 includes a housing 71, a seeding opening 72, a seed cleaning area 73, a seed box 74, and a seed scooping spoon 75. A seed cleaning area 73 is provided at the top of the housing 71, and a seeding opening 72 is provided at the bottom of the housing 71, enabling the seed potatoes to enter the seed furrow through the seeding opening 72. The seed scooping spoons 75 are evenly arranged on the inner side of the housing 71. The seed scooping spoons 75 move along with the seed metering chain inside the housing 71 and pass through the seed box 74 and the seed cleaning area 73. When the seed scooping spoons 75 pass through the seed box 74, the seed scooping spoons 75 pick up at least one or more seed potatoes from the seed box 74. The seed scooping spoons 75 carry the seed potatoes and move clockwise along with the seed metering chain. When passing through the seed cleaning area 73, the excess seeds roll off the seed scooping spoons 75 and fall into the seed return pipe 4, and then roll back into the seed box 74. Ideally, one seed is retained on the seed scooping spoon 75 to achieve the purpose of seed cleaning. A seed box 74 is fixed to the bottom of one end of the housing 71 for storing seeds;

[0043] Preferably, the reseeding execution component 1, the missed-seed detection component 2, the seed storage pipe 3, the seed return pipe 4, the seed storage detection component 5, and the seed storage execution component 6 are all connected to the housing 71 of the seeder 7.

[0044] The seed return pipe 4 is fixed to the housing 71. A seed storage opening is provided on the side surface of the middle part of the seed return pipe 4. The size of the seed storage opening allows a single seed potato to pass through. The seed storage pipe 3 is fixed to the housing 71. The top end of the seed storage pipe 3 is connected to the seed storage opening, enabling the seeds inside the seed return pipe 4 to enter the seed storage pipe 3 through the seed storage opening to provide seeds for reseeding. The top end of the seed return pipe 4 is connected to the seed cleaning area 73, enabling the seeds inside the seed cleaning area 73 to enter the seed return pipe 4; the bottom end of the seed return pipe 4 is fixed to the seed box 74, so that the excess seeds in the seed return pipe 4 can return to the seed box 74. A through groove is provided on the side surface of the top end of the seed storage pipe 3 for installing the seed storage detection sensor 51. A reseeding outlet is provided at the bottom end of the seed storage pipe 3. When reseeding, the reseeding execution component 1 opens the reseeding opening, and the seeds directly enter the seed furrow for reseeding;

[0045] The reseeding execution component 1 includes a reseeding push rod seat 11, a reseeding push rod 12, and a reseeding door 13. The reseeding push rod seat 11 is fixed to the housing 71. The bottom end of the reseeding push rod seat 11 is fixed with a reseeding push rod 12. The push rod of the reseeding push rod 12 is fixed with a reseeding door 13, so that the reseeding door 13 can be driven to move through the operation of the reseeding push rod 12. The reseeding door 13 is located inside the reseeding outlet, and the reseeding door 13 is slidably connected to the reseeding outlet on the seed storage pipe 3, so that the reseeding outlet can be opened or closed through the movement of the reseeding door 13;

[0046] The seed omission detection component 2 includes a seed omission detection sensor mounting base 21, a seed omission detection sensor 22, and a seed spoon detection sensor 23. There are two seed omission detection sensor mounting bases 21, which are symmetrically fixed on both sides of the housing 71 respectively, facilitating the symmetrical installation of the seed omission detection sensor 22. Two long holes are provided on the seed omission detection sensor mounting base 21. The seed omission detection sensor 22 is fixed inside one long hole, and the seed spoon detection sensor 23 is fixed inside the other long hole. The seed omission detection sensor 22 is aligned with the position above the seed spoon 75 where there is a seed potato, and the seed spoon detection sensor 23 is aligned with the bottom of the seed spoon 75;

[0047] Further, both the seed omission detection sensor 22 and the seed spoon detection sensor 23 are infrared opposed photoelectric sensors.

[0048] In this embodiment, the infrared opposed photoelectric sensor is an existing device with mature and extensive applications, which will not be elaborated one by one in this embodiment.

[0049] The seed storage detection component 5 includes a seed storage detection sensor 51 and a seed storage detection sensor mounting base 52. There are two seed storage detection sensor mounting bases 52, which are symmetrically fixed on both sides of the top of the seed storage tube 3, facilitating the symmetrical installation of the seed storage detection sensor 51. A positioning hole is provided inside the seed storage detection sensor mounting base 52, and the seed storage detection sensor 51 is fixed inside the positioning hole;

[0050] Preferably, the seed storage detection sensor 51 is an infrared opposed photoelectric sensor.

[0051] In this embodiment, the infrared opposed photoelectric sensor is an existing device with mature and extensive applications, which will not be elaborated one by one in this embodiment.

[0052] The seed storage execution component 6 includes a seed storage push rod seat 61, a seed storage push rod 62, and a seed storage door 63. The seed storage push rod seat 61 is fixed to the housing 71 to facilitate the installation of the seed storage push rod 62. The seed storage push rod seat 61 is fixed with the seed storage push rod 62, and the push rod of the seed storage push rod 62 is fixed with the seed storage door 63. The seed storage door 63 exactly blocks the seed storage port of the seed return tube 4. The seed storage door 63 is located inside the through groove, enabling the seed storage door 63 to slide in the through groove. During seed storage, the seed storage push rod 62 drives the seed storage door 63 to move, opening or closing the seed storage port to meet the seed storage requirements during the reseeding operation.

[0053] It further includes a control system, which includes a 12V power supply, a drive module, an optocoupler converter, a step-down module, and a single-chip microcomputer;

[0054] The 12V power supply is respectively connected to the drive module, the optocoupler converter, and the step-down module;

[0055] The step-down module is used to convert the 12V voltage into 5V voltage to supply power to the single-chip microcomputer;

[0056] The optocoupler converter converts the 12V signals detected by the missed-seed detection sensor 22, the seed-taking spoon detection sensor 23, and the seed-storing detection sensor 51 into 5V signals acceptable to the single-chip microcomputer through signal lines and transmits them to the single-chip microcomputer;

[0057] The single-chip microcomputer is connected to the driving module and transmits control signals to the driving module;

[0058] The driving module has two interfaces respectively connected to the reseeding push rod 12 and the seed-storing push rod 62, and is used to make the reseeding push rod 12 and the seed-storing push rod 62 execute corresponding actions;

[0059] Preferably, the model of the single-chip microcomputer is STM32F411CE.

[0060] As can be seen from the above:

[0061] To overcome the deficiencies of the prior art, the present invention addresses the many problems existing in the prior reseeding technology, including unreliable reseeding effects, inaccurate seed potato detection, and the similarity between the reseeding device and the seed-metering device, which increases the volume of the planter and makes the structure complex; for this reason, the present invention adopts the technical solutions of the above-mentioned embodiments, and the implementation process is as follows:

[0062] When the planting machine is sowing, the block seed potatoes are stored in the seed box 74. When the seed row chain carries the seed scoop 75 through the seed box 74, the seed scoop 75 takes at least one seed potato from the seed box 74. The seed scoop 75 carries the seed potato and moves clockwise with the seed row chain. When passing through the seed clearing area 73, the excess seeds fall from the seed scoop 75 and enter the seed return tube 4. The control system controls the seed storage push rod 62 and the reseeding push rod 12 to open the seed storage door 63 and close the reseeding door 13. When the seeds in the seed return tube 4 pass through the seed storage port, they fall into the seed storage tube 3. After the seed storage detection sensor 51 detects that the seeds have entered, the seed storage push rod 62 pushes the seed storage door 63 to close the seed storage port, completing the seed storage process. After the seed storage port is closed, the seeds that enter the seed return tube 4 from the seed clearing area 73 directly roll back to the seed box 74, completing the seed return process. When the seed taking spoon 75 and the seeds move to the seed missing detection component 2, and the seed missing detection sensor 22 and the seed taking spoon detection sensor 23 simultaneously detect the presence of seeds and the seed taking spoon, the seed discharge chain carries the seed taking spoon 75 and the seeds directly into the seed furrow for sowing; when the seed missing detection sensor 22 does not detect the seeds, and the seed taking spoon detection sensor 23 detects the seed taking spoon 75 at the same time, it represents seed missing, and the seed taking spoon detection sensor 23 continues to detect until the seed taking spoon 75 completely passes through, and the control system reads the time when the seed taking spoon 75 passes through the seed taking spoon detection sensor 23, and uses the fixed width of the seed taking spoon 75 and the detection time to calculate the running speed of the seed taking spoon 75, and the control system calculates the seed missing in real time. The running speed of the seed spoon 75 is used to calculate the delayed replanting time of the replanting push rod 12 by using the running speed of the seed spoon 75 and the fixed distance between the detection position and the sowing port 72. The delayed replanting time is updated in real time with the movement speed of the seed spoon 75. When the missed seed taking spoon 75 moves to the sowing port 72, the replanting push rod 12 pulls up the replanting door 13, opens the replanting door 13, and releases the seeds temporarily stored in the seed storage tube 3 into the seed furrow, completing the replanting process. Then the replanting push rod 12 pushes the replanting door 13, so that the replanting door 13 closes the replanting outlet at the bottom of the seed storage tube 3, and the seed storage push rod 62 moves to open the seed storage door 63, opens the seed storage port, and enters the next seed storage-replanting process.

[0063] Through the above configuration, the present application can certainly solve the above technical problems and achieve the following technical effects:

[0064] By using an infrared photoelectric sensor to dynamically monitor whether there are seed potatoes on the seed spoon during transportation, reseeding is carried out using the reseeding execution component 1, and there is no need to set up a separate reseeding box. Reseeding can be achieved when sowing with an empty spoon through the control system, and reseeding can be carried out in the seed furrow in time to avoid reseeding failures such as missed reseeding and jamming. The structure is simple, and the space occupied is small, which solves the problem of missed potato seeds.

[0065] The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments, and what is described in the above embodiments and the specification is only the principle of the present invention. Without departing from the spirit and scope of the present invention, various changes and improvements will occur to the present invention, and these changes and improvements fall within the scope of the present invention claimed. The scope of protection required by the present invention is defined by the appended claims and their equivalents.

Claims

1. A reseeding mechanism for reseeding at the sowing opening, characterized in that, It includes a reseeding execution component (1), a missed-seed detection component (2), a seed storage pipe (3), a seed return pipe (4), a seed storage detection component (5), a seed storage execution component (6), and a seeder (7). The seed return pipe (4) is located on one side of the seeder (7). The seed storage pipe (3) is located below the seed return pipe (4). The seed storage detection component (5) is located at the upper end of the seed storage pipe (3). The seed storage execution component (6) is located in the upper right of the seed storage pipe (3) and below the seed return pipe (4). The missed-seed detection component (2) is located in the lower right of the seed storage pipe (3) and below the seed storage execution component (6). The reseeding execution component (1) is located below the missed-seed detection component (2); The seeder (7) includes a housing (71), a seeding opening (72), a seed cleaning area (73), a seed box (74), and a seed scooping spoon (75). A seed cleaning area (73) is provided at the top of the housing (71). A seeding opening (72) is provided at the bottom of the housing (71). Seed scooping spoons (75) are evenly arranged on the inner side of the housing (71). A seed box (74) is fixed to the bottom of one end of the housing (71); A seed storage opening is provided on the side of the middle part of the seed return pipe (4). The top end of the seed return pipe (4) is connected to the seed cleaning area (73); The top end of the seed storage pipe (3) is connected to the seed storage opening; A reseeding outlet is provided inside the bottom end of the seed storage pipe (3); The reseeding execution component (1) includes a reseeding push rod seat (11), a reseeding push rod (12), and a reseeding door (13); The seed storage execution component (6) includes a seed storage push rod seat (61), a seed storage push rod (62), and a seed storage door (63); The seed scooping spoon (75) carries the seed potatoes and moves clockwise along with the seed metering chain. When passing through the seed cleaning area (73), the excess seeds fall off the seed scooping spoon (75) and enter the seed return pipe (4). The control system controls the actions of the seed storage push rod (62) and the reseeding push rod (12) to open the seed storage door (63) and close the reseeding door (13). When the seeds in the seed return pipe (4) pass through the seed storage opening, they fall into the seed storage pipe (3). After the seed storage detection sensor (51) detects the entry of the seeds, the seed storage push rod (62) pushes the seed storage door (63) to close the seed storage opening, completing the seed storage process; After the seed storage opening is closed, the seeds that enter the seed return pipe (4) from the seed cleaning area (73) directly roll back into the seed box (74), completing the seed return process; When a missed-seed is detected, when the seed scooping spoon (75) with a missed-seed moves to the position of the seeding opening (72), the reseeding push rod (12) pulls up the reseeding door (13) to open the reseeding door (13), and releases the seeds temporarily stored in the seed storage pipe (3) into the seed furrow, completing the reseeding process.

2. The reseeding mechanism for reseeding at the seeding opening according to claim 1, characterized in that, The seed return pipe (4) is fixed to the housing (71), and the bottom end of the seed return pipe (4) is fixed to the seed box (74).

3. The reseeding mechanism for reseeding at the seeding port according to claim 1, characterized in that The seed storage pipe (3) is fixed to the housing (71), and a through groove is provided on the side of the top end of the seed storage pipe (3).

4. The reseeding mechanism for reseeding at the seeding opening according to claim 3, characterized in that, The reseeding push rod seat (11) is fixed to the housing (71). A reseeding push rod (12) is fixed to the bottom end of the reseeding push rod seat (11). A reseeding door (13) is fixed to the push rod of the reseeding push rod (12). The reseeding door (13) is located inside the reseeding outlet, and the reseeding door (13) is slidably connected to the reseeding outlet on the seed storage tube (3).

5. The reseeding mechanism for reseeding at the sowing opening according to claim 1, characterized in that, The seed leakage detection assembly (2) includes a seed leakage detection sensor mounting seat (21), a seed leakage detection sensor (22), and a seed spoon detection sensor (23). There are two seed leakage detection sensor mounting seats (21), which are symmetrically fixed to both sides of the housing (71) respectively. Two long holes are formed in the seed leakage detection sensor mounting seat (21). A seed leakage detection sensor (22) is fixed inside one of the long holes, and a seed spoon detection sensor (23) is fixed inside the other long hole.

6. The reseeding mechanism for reseeding at the sowing opening according to claim 3, characterized in that, The seed storage detection assembly (5) includes a seed storage detection sensor (51) and a seed storage detection sensor mounting seat (52). There are two seed storage detection sensor mounting seats (52), and the two seed storage detection sensor mounting seats (52) are symmetrically fixed to both sides of the top end of the seed storage tube (3). A positioning hole is formed inside the seed storage detection sensor mounting seat (52), and a seed storage detection sensor (51) is fixed inside the positioning hole.

7. The reseeding mechanism for reseeding at the sowing opening according to claim 4, characterized in that, The seed storage push rod seat (61) is fixed to the housing (71). A seed storage push rod (62) is fixed to the seed storage push rod seat (61). A seed storage door (63) is fixed to the push rod of the seed storage push rod (62). The seed storage door (63) is located inside the through groove.

8. The reseeding mechanism for reseeding at the seeding opening according to claim 7, characterized in that, It further includes a control system, and the control system includes a 12V power supply, a drive module, an optocoupler converter, a step-down module, and a single-chip microcomputer; The 12V power supply is respectively connected to the drive module, the optocoupler converter, and the step-down module; The step-down module is used to convert the 12V voltage into a 5V voltage to supply power to the single-chip microcomputer; The optocoupler converter converts the detected 12V signal into a 5V signal acceptable to the single-chip microcomputer through a signal line and transmits it to the single-chip microcomputer; The single-chip microcomputer is connected to the drive module and transmits a control signal to the drive module; The drive module is respectively connected to and controls the reseeding push rod (12) and the seed storage push rod (62) to perform corresponding actions.

9. The reseeding mechanism for reseeding at the sowing opening according to claim 8, characterized in that, The model of the single-chip microcomputer is STM32F411CE.

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