Seed transferring device and method used after seed metering of high-speed pneumatic type seed metering device

Abstract

The invention relates to the technical field of agricultural machinery, and discloses a seed transferring device and method used after seed metering of a high-speed pneumatic seed metering device, a track is arranged on a base, the track comprises a section of semicircular track, and the two ends of the semicircular track are connected with a section of arc-shaped track through a connecting track to form a closed track; the seed receiving mechanism comprises a seed receiving wheel covering the peripheral side of the track, the seed receiving wheel is connected with a driving mechanism on the base to achieve autorotation, a plurality of baffles are arranged on the side, away from the base, of the seed receiving wheel in a diverging mode from the axis to the outside, the outer ends of the baffles are connected with seed pushing plates through pin shafts, and seed storage cavities are formed between the outer sides of the seed pushing plates and the baffles. The linkage plate is matched with the track through a limiting pin, and the seed receiving wheel rotates to realize opening and closing switching of the seed pushing plate; precise inoculation is completed through the seed storage cavity in the seed containing mechanism, seed movement is restrained, the uniformity of the grain distance is improved, the problems of collision dislocation and bounce dislocation of the current seeds are solved, and the drop point precision of the seeds is improved.

Description

Technical Field

[0001] The invention relates to the technical field of agricultural machinery, and in particular to a seed transfer device and method for a high-speed pneumatic seed metering device after seeding. Background Art

[0002] With the development of agricultural technology, the requirements for sowing efficiency and quality have also increased, and both high-speed operation and high-quality operation must be ensured. For high-speed pneumatic seeders, under high-speed sowing conditions, due to mechanical vibration and the centrifugal force of the seed disc on the seeds, the collision between the seeds and the inner wall of the seed guide device intensifies, which can easily cause "collision dyslocation" and "bounce dyslocation" problems, resulting in reduced seed placement accuracy, poor accuracy of plant spacing and uniformity of sowing.

[0003] The Chinese invention patent with the publication number CN107087462A discloses a belt-type seed guide device for an air-suction seed metering device, which, when the seeds rotate with the seed-taking disc 1 to reach the seeding area on the seed metering device, uses the linear velocity of the seed-taking disc hole as the initial velocity and performs free fall motion under the action of gravity. The seeds are introduced into the belt-type seed guide device installed in the middle of the double-disc furrow opener through the guide groove, and the seeds fall onto the seed conveyor belt under the action of gravity. However, when the seeds pass through the guide groove, since the seeds themselves have a certain initial velocity, when passing through the guide groove, the inner wall of the guide groove will still collide with the seeds, causing the problems of "collision dyslocation" and "bounce dyslocation", and the accuracy of the seed landing point is reduced. Summary of the invention

[0004] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a seed transfer device and method for a high-speed pneumatic seed meter after seeding, which completes precise inoculation through the seed storage chamber on the seed receiving mechanism, constrains seed movement, improves the uniformity of grain spacing, solves the problems of "collision dyslocation" and "bouncing dyslocation" that are easily caused by the prior art, and improves the accuracy of seed placement.

[0005] In order to achieve the above object, the present invention is implemented through the following technical solutions:

[0006] In a first aspect, a seed transfer device for a high-speed pneumatic seed meter after seeding comprises:

[0007] A base, wherein a track is provided on the base, wherein the track comprises a semicircular track, and both ends of the semicircular track are connected to a curved track through a connecting track to form a closed track;

[0008] The seed receiving mechanism includes an inoculation wheel covered on the side of the track, the inoculation wheel is connected to the driving mechanism on the base to realize self-rotation, a plurality of baffles are arranged on the side of the inoculation wheel away from the base and radiate outward from the axis, the outer ends of the baffles are connected to the seed pushing plate through the pin shaft, a seed storage cavity is formed between the outer side of the seed pushing plate and the baffles, a linkage plate is arranged near one end of the pin shaft near the base, the linkage plate cooperates with the track through a limit pin, and the inoculation wheel rotates to realize the opening and closing switching of the seed pushing plate.

[0009] As a further implementation, the inoculation wheel includes a cover body with a circular cross-section composed of a ring and a cover plate, the ring is arranged on the circumference of the track, and the seed storage cavity is formed on the side of the cover plate away from the base.

[0010] As a further implementation method, a through hole is provided on the cover plate at a position corresponding to the pin shaft, one end of the pin shaft is rotatably engaged with the baffle, and the other end extends through the through hole to the inside of the cover body and is connected to the linkage plate.

[0011] As a further implementation method, the limit pin is arranged on the side of the linkage plate away from the pin shaft, and the linkage plate and the seed pushing plate are both arc-shaped, and the curvature is adapted to the curvature of the circular ring.

[0012] As a further implementation method, a motor mounting point is provided on the base for installing the motor, and through holes are provided at the center of the base and the center of the inoculation wheel. 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 is connected to the motor. The motor drives the inoculation wheel to rotate via 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 center angle of the arc track is less than 180°.

[0014] As a further implementation method, a seed protection belt is arranged on the edge of the base through a support structure, a first end of the seed protection belt is arranged correspondingly at a position close to the arc track, and a second end of the seed protection belt is located outside the base body.

[0015] As a further implementation, the seed protection belt is located outside the baffle, and the gap between the first end of the seed protection belt 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 belt and the baffle.

[0016] As a further implementation, the base is used to be installed on the seed meter housing through a fixing piece, and the base is located between the seed metering disc and the seed guide belt, and is used to transfer seeds from the seed metering disc to the seed guide belt.

[0017] In a second aspect, a method for seed transfer after seeding by a high-speed pneumatic seed metering device, using any of the seed transfer devices described above, comprises the following steps:

[0018] The curved sides on the seeding disk and the inoculation wheel fit closely together and rotate towards each other. The seed pushing plate is at the outer edge of the inoculation wheel on the side away from the seeding disk. At this time, the seed storage cavity is in a closed state, and the seed pushing plate tends to fit the curved surface on the inoculation plate on the side close to the seeding disk, and the seed storage cavity is in an open state. When the seeds detach from the holes in the seeding disk, they move downward under the action of gravity. The seed storage cavities on the side close to the seeding disk are all in an open state. The seeds fall into the seed storage cavity and rotate with the rotation of the inoculation wheel until they reach the lower end and contact the seed guide belt. The seed pushing plate pushes the seeds from the seed storage cavity into the seed guide belt to complete the seed transfer.

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

[0020] 1. The present invention provides a seed receiving mechanism that can rotate relative to the base, so that the seed plate and the inoculation wheel are tightly fitted together and rotate towards each other, the seed pushing plate is in a closed state on the side away from the seed plate, and in an open state on the side close to the seed plate. When the seeds are separated from the seed plate holes, they move downward under the action of gravity. At this time, the seed pushing plates on the side close to the seed plate are in an open state, and the fallen seeds eventually fall into the seed storage cavity, completing precise inoculation, constraining seed movement, improving the uniformity of grain spacing, and solving the problems of "collision dyslocation" and "bouncing dyslocation" that are easily caused by the prior art.

[0021] 2. The present invention provides a seed protection belt. Under the guidance of the seed protection belt, the seeds will accurately enter the seed storage cavity and rotate with the rotation of the inoculation wheel until it reaches the lowermost position in contact with the seed guide belt. The seed pushing plate pushes the seeds from the seed storage cavity into the seed guide belt to complete the seed transfer.

[0022] 3. The present invention uses a seed receiving mechanism and a seed protection belt to accurately receive and transport seeds; uses a seed pushing plate opening and closing control mechanism to accurately control the opening and closing of the seed pushing plate, so that the seeds can accurately fall into the seed storage cavity, thereby increasing the constraints on the seeds, allowing them to fall into the seed trench along a specific trajectory, thereby improving the uniformity of seed placement. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

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

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

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

[0027] Figure 4 It is a structural front view of the seeding mechanism in the embodiment of the present invention;

[0028] Figure 5 It is a schematic diagram of the overall structure of the seeding mechanism in an embodiment of the present invention;

[0029] Figure 6 It is a schematic diagram of the bottom structure of the seeding mechanism in an embodiment of the present invention;

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

[0031] Figure 8 It is a schematic diagram of the structure of the seed transfer device in the embodiment of the present invention when it is working.

[0032] In the figure: the distances or sizes between parts are exaggerated to show the positions of various parts, and the schematic diagram is for reference only.

[0033] Wherein: 1. base, 2. linkage plate, 3. rotating shaft, 4. limiting pin, 5. seed receiving mechanism, 6. pressing spring, 7. seed protection belt, 8. seeds, 9. seed plate, 10. seed guide belt, 11. motor, 101. track, 102. second bracket, 103. first bracket, 501. seed pushing plate, 502. hollow shaft, 503. pin shaft, 504. seed storage chamber, 505. inoculation wheel, 506. pin shaft mounting groove, 507. through hole, 508. ring, 509. cover plate, 510. baffle. DETAILED DESCRIPTION

[0034] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0035] Embodiment 1

[0036] In a typical embodiment of the present invention, reference is made to Figure 1-Figure 8 As shown, a seed transfer device for a high-speed pneumatic seed meter after seeding includes a base 1 and a seed receiving mechanism 5. The seed receiving mechanism 5 is mounted on one side of the base 1. A track is provided on the base. The seed receiving mechanism 5 includes an inoculation wheel covered on the side of the track. The inoculation wheel rotates to open and close a seed pushing plate 501 on the inoculation wheel, thereby realizing the seed receiving and seed transfer of the seed transfer device.

[0037] by Figure 3 Taking the viewing 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 and lower positions on the left side of the base, and a motor mounting bracket is provided at the upper position on the right side of the base 1.

[0038] A through hole is provided at the center of the base 1 , a track 101 is provided on the front side of the base, and the motor 11 can be installed on the back side of the base, that is, the side of the base 1 away from the track 101 , through a motor mounting frame.

[0039] The structure of the track 101 includes a semicircular track, and both ends of the semicircular track are connected to a curved track through a connecting track to form a closed track.

[0040] like Figure 4-Figure 6 As shown, the inoculation wheel 505 is connected to the driving mechanism on the base 1 to realize self-rotation, and a plurality of baffles 510 are arranged on the side of the inoculation wheel 505 away from the base 1 to radiate outward from the axis, and the outer end of the baffle 510 is connected to the seed pushing plate 501 through the pin shaft 503, and a seed storage cavity 504 is formed between the outer side of the seed pushing plate 501 and the baffle 510, and a linkage plate 2 is arranged near one end of the pin shaft 503 near the base 1, and the linkage plate 2 cooperates with the track 101 through the limit pin 4, and the inoculation wheel 505 rotates to realize the opening and closing switching of the seed pushing plate 501.

[0041] Specifically, Figure 6 As shown, the inoculation wheel 505 includes a cover body with a circular cross section composed of a ring 508 and a cover plate 509, wherein the cover plate 509 is circular, the open end of the ring 508 is covered on the front of the base 1 and located outside the track 101, and the other end of the ring is installed with the cover plate 509. The cover plate is installed on the side of the ring 508 away from the base.

[0042] A through hole 507 is provided in the center of the cover plate 509. A protrusion is provided on the side of the cover plate 509 away from the base. The protrusion is a ring-shaped structure, and the through hole 507 is also provided at the center. A number of baffles are provided radiating from the protrusion to the surrounding side. In this embodiment, a total of eight groups of baffles 510 are provided. The baffles 510 have a certain curvature, and the extension direction of the baffles 510 and the radius direction of the cover plate 509 have a set angle.

[0043] like Figure 5 As shown, the outer ends of the eight groups of baffles 510 extend to the edge of the cover plate 509 and are provided with a pin mounting groove 506, and the baffles are perpendicular to the cover plate; Figure 6 As shown, the edge of the cover plate is provided with a through hole; Figure 4 As shown, the pin 503 is rotatably installed in the pin installation groove 506, one end of the pin 503 is rotatably matched with the baffle, and the other end of the pin 503 extends through the through hole to a position close to the front of the base 1 and is fixedly connected to the linkage plate 2.

[0044] like Figure 1 and Figure 4As shown, the part of the pin 503 located outside the cover plate 509 is installed with the seed pushing plate 501, and the part of the pin 503 located inside the cover plate 509 is installed with the linkage plate 2, and the seed pushing plate 501 and the linkage plate 2 on the same pin 503 are in the same plane. The linkage plate 2 and the seed pushing plate 501 are both arc-shaped, and the curvature is adapted to the curvature of the ring.

[0045] A limit pin 4 is provided on one side of the end of the linkage plate 2. The limit pin 4 is provided on the side of the linkage plate away from the pin shaft. The limit pin 4 cooperates with the track 101. When the seed receiving mechanism 5 rotates, the limit pin 4 slides on the track 101. The limit pin 4 is limited by the track 101, so that the limit 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 plate 510 and the adjacent baffle plate.

[0047] A through hole is provided at the center of the inoculation wheel 505, and the inoculation wheel 505 is fixedly connected to the rotating shaft 3 through the through hole. 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 is connected to the motor 11. The output end of the motor 11 drives the inoculation wheel 505 to rotate through 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 set as a hollow shaft 502, and the inoculation wheel 505 is provided with an end cover away from the base. One side of the end cover is plug-fitted with the hollow shaft 502 through a pin shaft, and the edge of the end cover is connected to the base through a connecting rod structure, so that the inoculation wheel can rotate while the end cover does not rotate. The end cover is set close to 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, the connecting line of the two ends of the arc track passes through the center of the base, and the center angle of the arc track is less than 180°. The semicircular track is arranged near the circular edge of the base, and the arc track is arranged near the central through hole of the base.

[0049] The structure of the track 101 enables the seed pusher plate 501 to be opened and closed when it rotates to different positions under the drive of the limit pin 4 when the inoculation wheel rotates. Figure 7 As shown, the four seed pushing plates 501 on the right side of the base 1 are in a closed state, and the four seed pushing plates 501 on the left side are in an open state. The opening states are different, and the degree of opening from top to bottom first increases and then decreases, thereby achieving inoculation first and then seed pushing.

[0050] The base 1 of this embodiment is mounted on the housing of the seed metering device by bolts. 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] In order to prevent seeds from falling off after inoculation in the seed storage cavity 504, a seed protection belt is provided on the open side of the seed pushing plate 501. Figure 2 As shown, at the position of the first bracket 103, one end of the seed protection belt 7 located on the outside of the base body is connected through the support frame. A group of columns are provided at the position of the second bracket 102, and a pressure spring 6 is sleeved on the column. One end of the pressure spring 6 is connected to the other end of the seed protection belt 7 through an inclined and extended spring steel. The seed protection belt is located on the outside of the baffle, and the gap between the end of the seed protection belt near the position of the second bracket 102 and the baffle is smaller than the minimum diameter of the seed. The pressure spring 6 can be a leaf spring structure. Under the guidance of the seed protection belt, the seeds 8 will accurately enter the seed storage cavity, rotate with the rotation of the inoculation wheel, until they turn to the bottom end and contact the seed guide belt, and the seed pusher plate pushes the seeds from the seed storage cavity into the seed guide belt to complete the seed transfer. The seed protection belt 7 of this embodiment is a flexible hard sheet structure.

[0052] In other examples, an arc plate can be arranged between the first bracket 103 and the second bracket 102 through a support frame, and the height of the arc plate is the same as that of the baffle plate, so as to prevent seeds from escaping. An opening for seeds to enter is formed between the seed protection belt and the baffle plate.

[0053] Embodiment 2

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

[0055] During operation, the curved sides of the seeding disk and the inoculation wheel are tightly fitted together and rotate towards each other. The seed pushing plate 501 is at the outer edge of the inoculation wheel 505 on the side away from the seeding disk 9. At this time, the seed storage cavity 504 is in a closed state, and the seed pushing plate 501 tends to fit the curved surface on the inoculation plate on the side close to the seeding disk, and the seed storage cavity 504 is in an open state. When the seeds are separated from the seeding disk holes, they move downward under the action of gravity. At this time, the seed storage cavity 504 on the side close to the seeding disk is in an open state, and the fallen 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 it reaches the lower end and contacts the seed guide belt. The seed pushing plate 501 pushes the seeds from the seed storage cavity 504 into the seed guide belt to complete the seed transfer, and the fallen seeds fall into the seed storage cavity under the guidance of the seed protection belt to complete the precise inoculation, constrain the seed movement, and improve the uniformity of grain spacing.

[0056] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A seed transfer device for a high-speed pneumatic seed meter after seeding, characterized in that: include: A base, wherein a track is provided on the base, wherein the track comprises a semicircular track, and both ends of the semicircular track are connected to a curved track through a connecting track to form a closed track; The seed receiving mechanism includes an inoculation wheel covered on the side of the track, the inoculation wheel is connected to the driving mechanism on the base to realize self-rotation, a plurality of baffles are arranged on the side of the inoculation wheel away from the base and radiate outward from the axis, the outer ends of the baffles are connected to the seed pushing plate through the pin shaft, a seed storage cavity is formed between the outer side of the seed pushing plate and the baffles, a linkage plate is arranged near one end of the pin shaft near the base, the linkage plate cooperates with the track through a limit pin, and the inoculation wheel rotates to realize the opening and closing switching of the seed pushing plate.

2. A seed transfer device for a high-speed pneumatic seed meter after seeding according to claim 1, characterized in that: The inoculation wheel comprises a cover body with a circular cross section composed of a ring and a cover plate. The ring is arranged on the circumference of the track, and the seed storage cavity is formed on the side of the cover plate away from the base.

3. A seed transfer device for a high-speed pneumatic seed metering device after seeding according to claim 2, characterized in that: A through hole is provided on the cover plate at a position corresponding to the pin shaft, one end of the pin shaft is rotatably matched with the baffle plate, and the other end passes through the through hole and extends into the cover body and is connected to the linkage plate.

4. A seed transfer device for a high-speed pneumatic seed metering device after seeding according to claim 3, characterized in that: The limit pin is arranged on the side of the linkage plate away from the pin shaft. The linkage plate and the seed pushing plate are both arc-shaped, and the curvature is adapted to the curvature of the circular ring.

5. A seed transfer device for a high-speed pneumatic seed meter after seeding according to claim 1, characterized in that: The base is provided with a motor mounting point for mounting the 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 is connected to the motor, and the motor drives the inoculation wheel to rotate via the rotating shaft.

6. A seed transfer device for high-speed pneumatic seed metering device after seeding according to claim 5, characterized in that: The main body of the base is circular, the connecting track is wavy, the connecting line between the two ends of the arc track passes through the center of the base, and the center angle of the arc track is less than 180°.

7. A seed transfer device for high-speed pneumatic seed metering device after seeding according to claim 6, characterized in that: A seed protection belt is arranged at the edge of the base through a support structure, a first end of the seed protection belt is arranged correspondingly at a position close to the arc track, and a second end of the seed protection belt is located outside the base body.

8. A seed transfer device for a high-speed pneumatic seed metering device after seeding according to claim 7, characterized in that: The seed protection belt is located outside the baffle, and the gap between the first end of the seed protection belt and the baffle is smaller than the minimum diameter of the seeds. An opening for seeds to enter is formed between the second end of the seed protection belt and the baffle.

9. A seed transfer device for a high-speed pneumatic seed meter after seeding according to claim 1, characterized in that: The base is used to be installed on the outer shell of the seed metering device through a fixing piece. The base is located between the seed metering disc and the seed guide belt and is used to transfer seeds from the seed metering disc to the seed guide belt.

10. A method for seed transfer after seeding by a high-speed pneumatic seed metering device, characterized in that: The seed transfer device according to any one of claims 1 to 9 comprises the following steps: The curved sides on the seeding disk and the inoculation wheel fit closely together and rotate towards each other. The seed pushing plate is at the outer edge of the inoculation wheel on the side away from the seeding disk. At this time, the seed storage cavity is in a closed state, and the seed pushing plate tends to fit the curved surface on the inoculation plate on the side close to the seeding disk, and the seed storage cavity is in an open state. When the seeds detach from the holes in the seeding disk, they move downward under the action of gravity. The seed storage cavities on the side close to the seeding disk are all in an open state. The seeds fall into the seed storage cavity and rotate with the rotation of the inoculation wheel until they reach the lower end and contact the seed guide belt. The seed pushing plate pushes the seeds from the seed storage cavity into the seed guide belt to complete the seed transfer.

Images