A seed transfer device and method for high-speed pneumatic seeding device after seeding

Abstract

The present invention relates to the technical field of agricultural machinery, and discloses a seed rotation device and method for a high-speed pneumatic seed metering device after seeding. A track is provided on a base, and the track includes a semicircular track. The two ends of the semicircular track are connected to a curved track through a connecting track to form a closed track; a seed receiving mechanism includes an inoculation wheel covered on the side of the track, and the inoculation wheel is connected to a driving mechanism on the base to realize self-rotation. A plurality of baffles are provided on the side of the inoculation wheel away from the base, and the outer ends of the baffles are connected to a seed pushing plate through a pin shaft. A seed storage cavity is formed between the outer side of the seed pushing plate and the baffle. A linkage plate is provided near one end of the pin shaft, and the linkage plate cooperates with the track through a limit pin. The inoculation wheel rotates to realize the opening and closing switching of the seed pushing plate; the present invention completes precise inoculation through the seed storage cavity on the seed receiving mechanism, constrains seed movement, improves grain spacing uniformity, solves the current problems of "collision dyslocation" and "bouncing dyslocation" of seeds, and improves the landing accuracy of seeds.

Description

Technical Field

[0001] This invention relates to the field of agricultural machinery technology, and in particular to a seed transfer device and method for seed transfer after seed metering by a high-speed pneumatic seed meterer. Background Technology

[0002] With the development of agricultural technology, the requirements for sowing efficiency and quality have also increased, demanding both high-speed and high-quality operation. For high-speed pneumatic seed metering devices, under high-speed sowing conditions, the mechanical vibration and centrifugal force of the seed disc on the seeds intensify the collision between the seeds and the inner wall of the seed guiding device, easily causing problems such as "collision displacement" and "bouncing displacement." This results in reduced seed landing accuracy, decreased plant spacing accuracy, and poor sowing uniformity.

[0003] Chinese invention patent CN107087462A discloses a belt-type seed guide device for a pneumatic seed metering device. When seeds arrive at the seed delivery area on the seed metering device as the seed-collecting disc 1 rotates, the seeds have an initial velocity equal to the linear velocity of the seed-collecting disc's holes and undergo free fall under the influence of gravity. The seeds are then guided through a guide groove into a belt-type seed guide device installed in the middle of a double-disc furrow opener, where they fall onto the seed conveyor belt under gravity. However, as the seeds pass through the guide groove, due to their inherent initial velocity, collisions still occur between the inner wall of the guide groove and the seeds, causing problems of "collision displacement" and "bouncing displacement," thus reducing the accuracy of the seed's landing point. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the present invention aims to provide a seed transfer device and method for high-speed pneumatic seed metering devices after seed metering. The device achieves precise inoculation through the seed storage cavity on the seed receiving mechanism, constrains seed movement, improves seed spacing uniformity, solves the problems of "collision displacement" and "bouncing displacement" that are easily caused by existing technologies, and improves the accuracy of seed landing point.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solution:

[0006] In a first aspect, a seed transfer device is provided for use after seed dispensing by a high-speed pneumatic seed metering device, comprising:

[0007] The base has a track, which includes a semi-circular track and the two ends of the semi-circular track are connected to an arc track to form a closed track.

[0008] The seed-receiving mechanism includes an inoculation wheel covering the periphery of the track. The inoculation wheel is connected to a drive mechanism on the base to achieve rotation. Several baffles are arranged outward from the axis on the side of the inoculation wheel away from the base. The outer end of the baffle is connected to a seed-pushing plate through a pin. A seed storage cavity is formed between the outer side of the seed-pushing plate and the baffle. A linkage plate is arranged at the end of the pin near the base. The linkage plate cooperates with the track through a limit pin. The rotation of the inoculation wheel realizes the opening and closing of the seed-pushing plate.

[0009] As a further implementation, the inoculation wheel includes a circular cover consisting of a ring and a cover plate, the ring being disposed around the track, and the seed storage cavity being formed on the side of the cover plate away from the base.

[0010] As a further implementation, the cover plate is provided with a through hole at the position of the pin shaft. One end of the pin shaft is rotatably engaged with the baffle, and the other end passes through the through hole to extend into the inside of the cover and connects to the linkage plate.

[0011] As a further implementation, the limiting pin is located on the side of the linkage plate away from the pin shaft, and both the linkage plate and the seed-pushing plate are arc-shaped, with the arc matching the arc of the ring.

[0012] As a further implementation, the base is provided with a motor mounting point for mounting a motor. The center of the base and the center of the inoculation wheel are provided with through holes. The inoculation wheel is fixedly connected to the rotating shaft through the through holes. The rotating shaft extends through the through holes on the base to the side of the base away from the inoculation wheel and connects to the motor. The motor drives the inoculation wheel to rotate through the rotating shaft.

[0013] As a further implementation, the main body of the base is circular, the connecting track is wavy, the line connecting the two ends of the arc track passes through the center of the base, and the central angle of the arc track is less than 180°.

[0014] As a further implementation, the base edge is provided with a seed protection strip through a support structure, with the first end of the seed protection strip located near the arc-shaped track and the second end of the seed protection strip located on the outside of the base body.

[0015] As a further implementation, the seed protection strip is located outside the baffle, and the gap between the first end of the seed protection strip and the baffle is smaller than the minimum diameter of the seed, and an opening for the seed to enter is formed between the second end of the seed protection strip and the baffle.

[0016] As a further implementation, the base is used to be mounted on the seed metering device housing by means of a fastener, the base being positioned between the seed metering tray and the seed guide belt, for transferring seeds from the seed metering tray to the seed guide belt.

[0017] Secondly, a method for transferring seeds after seeding by a high-speed pneumatic seed metering device, employing any of the seed transfer devices described above, includes the following steps:

[0018] The curved sides of the seed metering tray and the inoculation wheel are tightly fitted together and rotate in opposite directions. The seed pusher plate is located at the outer edge of the inoculation wheel on the side away from the seed metering tray, at which point the seed storage cavity is closed. On the side closer to the seed metering tray, the seed pusher plate tends to fit against the curved surface of the inoculation plate, and the seed storage cavity is open. When the seeds are released from the holes of the seed metering tray, they move downwards under the action of gravity. The seed storage cavities on the side closer to the seed metering tray are all open, and the seeds fall into the seed storage cavity. They rotate with the rotation of the inoculation wheel until they reach the bottom position and contact the seed guide belt. The seed pusher plate pushes the seeds from the seed storage cavity into the seed guide belt, completing the seed transfer.

[0019] The beneficial effects of the present invention are as follows:

[0020] 1. This invention features a seed-accepting mechanism that can rotate relative to the base. The seed metering disc and the inoculation wheel are tightly fitted together and rotate in opposite directions. The seed-pushing plate is closed on the side away from the seed metering disc and open on the side closer to the seed metering disc. When the seeds detach from the holes in the seed metering disc, they move downwards under the influence of gravity. At this time, the seed-pushing plates on the side closer to the seed metering disc are open, and the falling seeds eventually fall into the seed storage cavity, completing precise inoculation. This invention constrains the movement of seeds, improves the uniformity of seed spacing, and solves the problems of "collision displacement" and "bouncing displacement" that are easily caused by existing technologies.

[0021] 2. By setting a seed protection belt, the seeds will accurately enter the seed storage chamber under the guidance of the seed protection belt. The seeds will rotate with the rotation of the inoculation wheel until they reach the bottom position and contact the seed guide belt. The seed pusher will then push the seeds from the seed storage chamber into the seed guide belt, thus completing the seed transfer.

[0022] 3. This invention accurately receives and transfers seeds through a seed receiving mechanism and a seed protection belt; through a seed pushing plate opening and closing control mechanism, the opening and closing of the seed pushing plate is accurately controlled, so that the seeds can accurately fall into the seed storage cavity, increasing the constraint on the seeds and causing them to fall into the seed furrow along a specific trajectory, thereby improving the uniformity of seed falling. Attached Figure Description

[0023] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0024] Figure 1 This is a schematic diagram of the rear side of the seed transfer device in an embodiment of the present invention;

[0025] Figure 2 This is a front view of the seed transfer device in an embodiment of the present invention;

[0026] Figure 3 This is a front view of the base structure in an embodiment of the present invention;

[0027] Figure 4 This is a front view of the seed-accepting mechanism in an embodiment of the present invention;

[0028] Figure 5 This is a schematic diagram of the overall structure of the seed-accepting mechanism in an embodiment of the present invention;

[0029] Figure 6 This is a schematic diagram of the bottom structure of the seed-accepting mechanism in an embodiment of the present invention;

[0030] Figure 7 This is a schematic diagram of the opening and closing control mechanism of the seed pusher plate in an embodiment of the present invention;

[0031] Figure 8 This is a schematic diagram of the structure of the seed transfer device in operation according to an embodiment of the present invention.

[0032] The diagram exaggerates the spacing or dimensions between parts to show their positions; the diagram is for illustrative purposes only.

[0033] The components are: 1. Base, 2. Linkage plate, 3. Rotating shaft, 4. Limiting pin, 5. Seed receiving mechanism, 6. Compression spring, 7. Seed protection belt, 8. Seed, 9. Seed dispensing tray, 10. Seed guide belt, 11. Motor, 101. Track, 102. Second bracket, 103. First bracket, 501. Seed pushing plate, 502. Hollow shaft, 503. Pin, 504. Seed storage cavity, 505. Inoculation wheel, 506. Pin mounting groove, 507. Through hole, 508. Ring, 509. Cover plate, 510. Baffle. Detailed Implementation

[0034] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the invention. Unless otherwise specified, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0035] Example 1

[0036] In a typical embodiment of the present invention, reference is made to Figures 1-8 As shown, a seed transfer device for seed transfer after seed transfer by a high-speed pneumatic seed meterer includes a base 1 and a seed receiving mechanism 5. The seed receiving mechanism 5 is installed on one side of the base 1, and a track is provided on the base. The seed receiving mechanism 5 includes an inoculation wheel covered around the track. The rotation of the inoculation wheel opens and closes the seed pushing plate 501 on the inoculation wheel, thereby realizing the seed receiving and transfer of the seed transfer device.

[0037] by Figure 3 Taking the view direction as an example, the main body of the base is circular. A first bracket 103 and a second bracket 102 are provided at the upper left and lower left sides of the base, and a motor mounting bracket is provided at the upper right side of the base.

[0038] The base 1 has a through hole in the center and a rail 101 on one side of the front of the base. The motor 11 can be installed on the back of the base, that is, the side of the base 1 away from the rail 101, through the motor mounting bracket.

[0039] The structure of the track 101 includes a semi-circular track, and the two ends of the semi-circular track are connected to an arc track to form a closed track through connecting tracks.

[0040] like Figure 4-Figure 6 As shown, the inoculation wheel 505 is connected to the drive mechanism on the base 1 to achieve rotation. Several baffles 510 are arranged from the axis outward on the side of the inoculation wheel 505 away from the base 1. The outer end of the baffle 510 is connected to the seed pusher plate 501 through the pin 503. A seed storage cavity 504 is formed between the outer side of the seed pusher plate 501 and the baffle 510. A linkage plate 2 is arranged at the end of the pin 503 near the base 1. The linkage plate 2 cooperates with the track 101 through the limit pin 4. The rotation of the inoculation wheel 505 realizes the opening and closing of the seed pusher plate 501.

[0041] Specifically, such as Figure 6 As shown, the inoculation wheel 505 includes a circular cover consisting of a ring 508 and a cover plate 509. The cover plate 509 is circular. The open end of the ring 508 covers the front of the base 1 and is located outside the track 101. The cover plate 509 is installed at the other end of the ring. The cover plate is installed on the side of the ring 508 away from the base.

[0042] The cover plate 509 has a through hole 507 in the center. The cover plate 509 has a protrusion on the side away from the base. The protrusion has a ring structure and a through hole 507 in the center. Several baffles are arranged radiating from the protrusion. In this embodiment, a total of eight baffles 510 are provided. The baffles 510 have a certain curvature and the extension direction of the baffles 510 has a set angle with the radial direction of the cover plate 509.

[0043] like Figure 5 As shown, the outer ends of the eight sets of baffles 510 extend to the edge of the cover plate 509 and are provided with pin mounting grooves 506; the baffles are perpendicular to the cover plate; as Figure 6 As shown, the cover plate has through holes along its edge; Figure 4 As shown, the pin 503 is rotatably installed in the pin mounting groove 506. One end of the pin 503 is rotatably engaged with the baffle, and the other end of the pin 503 extends through the through hole to a position near the front of the base 1 and is fixedly connected to the linkage plate 2.

[0044] like Figure 1 and Figure 4As shown, the portion of the pin 503 located on the outer side of the cover plate 509 is fitted with a seed-pushing plate 501, while the portion of the pin 503 located on the inner side of the cover plate 509 is fitted with a linkage plate 2. The seed-pushing plate 501 and the linkage plate 2 on the same pin 503 are in the same plane. Both the linkage plate 2 and the seed-pushing plate 501 are arc-shaped, and their curvature matches that of the annulus.

[0045] A limiting pin 4 is provided on one side of the end of the linkage plate 2. The limiting pin 4 is located on the side of the linkage plate away from the pin shaft. The limiting pin 4 cooperates with the track 101. When the seed feeding mechanism 5 rotates, the limiting pin 4 slides on the track 101. The limiting pin 4 is limited by the track 101, so that the limiting pin 4 drives the linkage plate 2 to open and close, and then drives the seed pushing plate 501 to open and close through the pin shaft 3.

[0046] like Figure 4 As shown, the seed storage cavity 504 is formed on the side of the cover plate 509 away from the base 1, and the seed storage cavity 504 is formed between the outer side of the seed pushing plate 501 on each baffle 510 and the adjacent baffle.

[0047] The inoculation wheel 505 has a through hole in its center, through which it is fixedly connected to the rotating shaft 3. The rotating shaft 3 extends through the through hole on the base 1 to the side of the base 1 away from the inoculation wheel 505 and connects to the motor 11. The output end of the motor 11 drives the inoculation wheel 505 to rotate via the rotating shaft. The connection between the motor and the rotating shaft is not limited. The end of the rotating shaft 3 away from the motor is a hollow shaft 502. The side of the inoculation wheel 505 away from the base has an end cap. One side of the end cap is inserted into the hollow shaft 502 via a pin. The edge of the end cap is connected to the base via a connecting rod structure, allowing the inoculation wheel to rotate while the end cap does not. The end cap is located near the right side of the inoculation wheel 505. Figure 8 Not shown.

[0048] like Figure 3 As shown, the connecting track on the base 1 is wavy in shape, and the line connecting the two ends of the arc track passes through the center of the base. The central angle of the arc track is less than 180°. The semi-circular track is located near the circular edge of the base, and the arc track is located near the central through hole of the base.

[0049] The structure of the track 101 allows the seed-pushing plate 501 to open and close when it rotates to different positions under the influence of the limiting pin 4, as the inoculation wheel rotates. Figure 7 As shown, the four seed-pushing plates 501 on the right side near the base 1 are in the closed state, while the four seed-pushing plates 501 on the left side are in the open state. The opening degree is different from top to bottom, first increasing and then decreasing, so as to achieve inoculation first and then seed-pushing.

[0050] In this embodiment, the base 1 is bolted to the seed metering device housing. The base 1 is located between the seed metering disc 9 and the seed guide belt 10 and is used to transfer seeds from the seed metering disc 9 to the seed guide belt 10.

[0051] To prevent seeds from falling out after inoculation in the seed storage chamber 504, a seed protection strip is installed on the open side of the seed pusher plate 501. Specifically, as follows... Figure 2 As shown, at the first support 103 position, one end of the seed-protecting belt 7 located on the outside of the base body is connected by a support frame. At the second support 102 position, a set of columns are provided, with a compression spring 6 fitted onto each column. One end of the compression spring 6 is connected to the other end of the seed-protecting belt 7 via an inclined, extended spring steel. The seed-protecting belt is located outside the baffle, and the gap between the end of the seed-protecting belt near the second support 102 and the baffle is less than the minimum diameter of the seed. The compression spring 6 can be a leaf spring structure. Guided by the seed-protecting belt, the seed 8 accurately enters the seed storage chamber and rotates with the inoculation wheel until it reaches the lowest point and contacts the seed-guided belt. The seed-pushing plate then pushes the seed from the seed storage chamber into the seed-guided belt, completing the seed transfer. In this embodiment, the seed-protecting belt 7 is a flexible, rigid sheet structure.

[0052] In other examples, an arc-shaped plate can be installed between the first support 103 and the second support 102 via a support frame. The height of the arc-shaped plate is the same as that of the baffle. This can prevent seeds from escaping. An opening is formed between the seed-protecting strip and the baffle for seeds to enter.

[0053] Example 2

[0054] In a typical embodiment of the present invention, reference is made to Figures 1-8 As shown, a method for transferring seeds after seeding by a high-speed pneumatic seed metering device, using the seed transfer device described in Embodiment 1, includes the following steps:

[0055] During operation, the curved sides of the seed metering disc and the inoculation wheel are tightly fitted together and rotate in opposite directions. The seed pusher plate 501 is located at the outer edge of the inoculation wheel 505 on the side away from the seed metering disc 9, at which time the seed storage cavity 504 is in a closed state. On the side closer to the seed metering disc, the seed pusher plate 501 tends to fit against the curved surface of the inoculation plate, and the seed storage cavity 504 is in an open state. When the seeds are released from the seed metering disc holes, they move downwards under the action of gravity. At this time, the seed storage cavities 504 on the side closer to the seed metering disc are all in an open state. The falling seeds fall into the seed storage cavity 504 under the guidance of the seed protection belt 7 and rotate with the rotation of the inoculation wheel 505 until they reach the bottom position and contact the seed guide belt. The seed pusher plate 501 pushes the seeds from the seed storage cavity 504 into the seed guide belt, completing the seed transfer. The falling seeds fall into the seed storage cavity under the guidance of the seed protection belt, completing precise inoculation, constraining the seed movement, and improving the uniformity of the seed spacing.

[0056] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A seed transfer device after seed metering by a high-speed pneumatic seed metering device, characterized in that, include: The base has a track, which includes a semi-circular track and the two ends of the semi-circular track are connected to an arc track to form a closed track. The seed-receiving mechanism includes an inoculation wheel covered around the track. The inoculation wheel is connected to a drive mechanism on the base to achieve rotation. Several baffles are arranged from the axis outward on the side of the inoculation wheel away from the base. The outer end of the baffle is connected to a seed-pushing plate through a pin. A seed storage cavity is formed between the outer side of the seed-pushing plate and the baffle. A linkage plate is arranged at the end of the pin near the base. The linkage plate cooperates with the track through a limit pin. The rotation of the inoculation wheel realizes the opening and closing of the seed-pushing plate. The inoculation wheel includes a circular cover consisting of a ring and a cover plate. The ring is located around the track, and the seed storage chamber is formed on the side of the cover plate away from the base. The cover plate has a through hole corresponding to the pin position. One end of the pin is rotatably engaged with a baffle, and the other end extends through the through hole into the cover body and connects to the linkage plate. The limiting pin is located on the side of the linkage plate away from the pin. Both the linkage plate and the seed pushing plate are arc-shaped, and the arc is adapted to the arc of the ring. The track includes a semi-circular track, the two ends of which are connected to an arc-shaped track to form a closed track; the main body of the base is circular, the connecting track is wavy, the line connecting the two ends of the arc-shaped track passes through the center of the base, and the central angle of the arc-shaped track is less than 180°; the base is used to be installed on the seed metering device housing by fixing components, and the base is located between the seed metering tray and the seed guide belt, used to transfer seeds from the seed metering tray to the seed guide belt.

2. The seed transfer device after seeding by a high-speed pneumatic seed metering device according to claim 1, characterized in that, The base is provided with a motor mounting point for mounting a motor. The center of the base and the center of the inoculation wheel are provided with through holes. The inoculation wheel is fixedly connected to the rotating shaft through the through holes. The rotating shaft extends through the through holes on the base to the side of the base away from the inoculation wheel and connects to the motor. The motor drives the inoculation wheel to rotate through the rotating shaft.

3. A seed transfer device after seeding by a high-speed pneumatic seed metering device according to claim 1, characterized in that, The base edge is provided with a seed protection strip through a support structure. The first end of the seed protection strip is located near the arc-shaped track, and the second end of the seed protection strip is located on the outside of the base body.

4. A seed transfer device after seeding by a high-speed pneumatic seed metering device according to claim 3, characterized in that, The seed protection strip is located outside the baffle, and the gap between the first end of the seed protection strip and the baffle is smaller than the minimum diameter of the seed. An opening for the seed to enter is formed between the second end of the seed protection strip and the baffle.

5. A method for transferring seeds after seeding by a high-speed pneumatic seed metering device, characterized in that, The seed transfer device as described in any one of claims 1-4 includes the following steps: The curved sides of the seed metering tray and the inoculation wheel are tightly fitted together and rotate in opposite directions. The seed pusher plate is located at the outer edge of the inoculation wheel on the side away from the seed metering tray, at which point the seed storage cavity is closed. On the side closer to the seed metering tray, the seed pusher plate tends to fit against the curved surface of the inoculation plate, and the seed storage cavity is open. When the seeds are released from the holes of the seed metering tray, they move downwards under the action of gravity. The seed storage cavities on the side closer to the seed metering tray are all open, and the seeds fall into the seed storage cavity. They rotate with the rotation of the inoculation wheel until they reach the bottom position and contact the seed guide belt. The seed pusher plate pushes the seeds from the seed storage cavity into the seed guide belt, completing the seed transfer.

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