A hill-drop planter for rapid seed metering of irregular seeds with active clamping

Abstract

The present invention relates to an active clamping type seed drill for rapid seeding of irregular seeds, the structure of which is mainly composed of a fixed plate, a central axis, a seeding plate assembly, a movable plate, a duckbill, and a shell. The feature is that a seed inlet and an adjustment knob for seeds with different morphological characteristics are provided on the side of the fixed plate, and the seed adjustment knob is connected to a limit block via a pin; the seeding plate assembly is composed of a gravity block, a seed removal slider, a connecting rod, and a limit block, which are fixed to the shell via screws; the seed removal slider and the seeding plate constitute a seed holding space capable of accommodating seeds; a closed loop is formed between the shell and the seeding plate for the movement of the gravity block, and the shell is connected to the central axis via a rolling bearing; there are thirteen duckbill assemblies, which are evenly distributed around the circumference of the seed drill; the central axis passes through the movable plate and the fixed plate. The present invention realizes rapid self-adjustment of the seed holding space size in different seeding stages of the seed drill, can adapt to non-pelletized seeds with different morphological characteristics, and reduces the seeding omission rate of the seed drill.

Description

Technical Field

[0001] The invention belongs to the field of agricultural sowing, and more particularly relates to an active clamping type hole seeder for quickly sowing irregular seeds. Background Art

[0002] The seed meter is the core component of the hole seeder. Mechanical seed meters primarily utilize a specialized mechanical structure to carry seeds from the seed collection area to the seeding area, where they are dropped. Currently, traditional mechanical seed meters have poor adaptability to irregularly shaped seeds, significantly increasing the rate of missed seeds at high speeds, severely impacting hole seeder performance. Furthermore, due to the large variation in seed size, irregular seeds have poor mobility and are difficult to collect. Summary of the Invention

[0003] The purpose of the present invention is to address the problems existing in the above-mentioned existing mechanical seed drills, and in combination with the actual needs of mechanized operations of irregular seeds, an active clamping type seed drill for rapid seeding of irregular seeds has been developed. The shape of the inner hole of the gravity block is designed according to the movement law of the seed-taking slider, so that it moves under the action of gravity and geometric position, so that the seed-taking slider produces different sliding amounts at different stages of seed taking, and actively adjusts the volume of the seed holding space to produce different clamping effects on irregular seeds at different stages, thereby increasing the adaptability of the seed disc; the seed disc assembly avoids the use of spring structure, which can overcome the hysteresis of the spring device to achieve high-speed sowing operations; the seed-taking slider is driven to vibrate by the swing of the connecting rod, thereby increasing the disturbance to the seed population; thereby solving the problems mentioned in the background.

[0004] To achieve the above-mentioned purpose, the present invention is realized through the following technical solutions: an active clamping type irregular seed rapid seeding hole seeder mainly includes a fixed plate, a shell, a seed plate assembly, a movable plate and a central shaft, the movable plate is connected to the central shaft through a bearing, and a seed inlet and an adjustment knob for seeds with different morphological characteristics are provided on the end face of the movable plate, the seed adjustment knob is connected to the limit block through a pin shaft, and the limit block rotates when the adjustment knob is rotated, and the outer side of the limit block is tangent to the gravity block in the seeding area, and the gravity block is hinged to the seed removal slider through a connecting rod. There are a total of thirteen seed removal sliders, which are evenly distributed in the seed plate assembly slot, and can achieve a small range in the slot. Radial sliding realizes self-adjustment of the volume of the seed holding space. The seed disc assembly is connected to the fixed disc by screws. The fixed disc is connected to the central axis by bearings and is fixed by shaft shoulders and nuts. There are thirteen seed guide channels between the fixed disc and the seed disc assembly. The end faces of the seed guide channels and the seed discs that coincide with each other are provided with through holes. The through holes and the shaped holes on the seed disc are at the same height. The diameter of the through holes is larger than the outer contour of the shaped holes. The contour of the shaped holes on the seed disc and the contour of the shaped holes on the seed-taking slider together constitute three sections of the elliptical quadrant. The outer side of the seed guide tube is connected to the duckbill and is connected by a channel inside, thus constituting an active clamping type irregular seed rapid seeding hole seeder.

[0005] Compared with the prior art, the present invention aims at the problems encountered by mechanical seed drills such as large differences in the shapes and sizes of irregular seeds and poor population mobility, and designs an active clamping irregular seed drill for rapid seeding. The self-adjustment of the seed holding space volume is completed by actively adjusting the adjustment knob and actively extending and retracting the seed-taking slider, so as to realize the encapsulation, clamping and delivery of different types of irregular seeds. The invention has the advantages of novel, unique and reasonable structure, good sowing quality, adaptability to high-speed sowing, wide applicability and high operating efficiency. The spring structure is avoided in the seed disc assembly, which can overcome the hysteresis of the spring device to realize high-speed sowing operation, and opens up a new structural scheme for mechanical seed drills. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Figure 1 The present invention is a partial cross-sectional view of an active clamping type irregular seed drill for rapid seeding.

[0007] Figure 2 The present invention is a schematic structural diagram of an active clamping type irregular seed drill for rapid seeding.

[0008] Figure 3 This is an overall exploded view of an active clamping type irregular seed drill for rapid seeding in the present invention.

[0009] Figure 4 It is a structural schematic diagram of the seed disc assembly in the present invention.

[0010] Figure 5 Schematic diagram of the movable disk in the present invention.

[0011] Figure 6 It is a schematic diagram of the seeding process of the present invention.

[0012] In the figure: 1. Moving plate; 2. Seed inlet tube; 3. Duckbill; 4. Adjustment knob; 5. Shell; 6. Seed disc assembly; 7. Center shaft; 8. Seed cleaning brush; 9. Seed spring tooth; 10. Limit block; 11. Pressure plate; 12. Rolling bearing; 13. Seed guide tube; 14. Fixed plate; 15. Seed removal slider; 16. Connecting rod; 17. Gravity block; 18. Seed disc; 19. Inner hole of gravity block; 20. Horse-tooth corn seed; 1000. Seed holding space; 1001. Seed inlet; 1002. Window; 1003. Adjustment slot. DETAILED DESCRIPTION

[0013] The technical solutions in the embodiments of the present invention are described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0014] See also Figure 1-6As shown, in this embodiment, an active clamping type irregular seed rapid seeding hole seeder is provided, which mainly includes a fixed plate 14, a shell 5, a seed plate assembly 6, a movable plate 1 and a central shaft 7. The movable plate 1 is connected to the central shaft 7 through a bearing 12. A seed inlet and an adjustment knob 4 for seeds with different morphological characteristics are provided on the end face of the movable plate 1. The seed adjustment knob 4 is connected to the limit block 10 through a pin shaft. When the adjustment knob 4 is rotated, the limit block 10 also rotates. The outer side of the limit block 10 is tangent to the gravity block 17 in the seeding area. The gravity block 17 is hinged to the seed removal slider 15 through a connecting rod 16. There are a total of thirteen seed removal sliders 15 evenly distributed in the seed plate 19 slot, which can achieve a small range of radial sliding in the slot. The seed plate assembly 6 is connected to the fixed plate 14 by screws, and together with the shell, it constitutes a seed holding space that can accommodate seeds. The fixed plate 14 It is connected to the central axis through a bearing 12 and fixed by a shoulder and a nut. There are thirteen seed guide channels 13 between the fixed plate 14 and the seed disc assembly 6. The end face of the seed guide channel 13 that coincides with the seed disc 19 is provided with a through hole. The through hole and the shaped hole on the seed disc 19 are at the same height. The diameter of the through hole is larger than the outer contour of the shaped hole. The shaped hole contour on the seed disc 19 and the shaped hole contour on the seed-taking slider 15 together constitute three sections of the elliptical quadrant trajectory. The lower end of the seed guide tube 13 is provided with a through groove with a width less than the minimum size of the seed. The outer side of the seed guide tube 13 is connected to the duckbill 3, and there is a channel connection inside, thereby constituting an active clamping type irregular seed rapid seeding hole seeder.

[0015] During operation, the seed population enters the seed cavity of the seed drill through the seed inlet tube, and the seed adjustment knob 4 is rotated to the corresponding position according to the measured seed-related parameters. The seed adjustment knob 4 drives the limit block 10 to rotate to the corresponding position through the pin shaft, and the limit block 10 controls the working stroke of the seed removal slider 15 through the different contours of contact with the gravity block 17 to adapt to seeds of different sizes. At this time, due to the friction of the ground, the duckbill 3 drives the fixed plate 14 and the seed plate assembly 6 to rotate around the central axis 7. When a seed removal slider 15 on the seed plate enters the seed removal area, the built-in gravity block 17 falls under the action of gravity, and the seed removal slider 15 is driven to move outward through the connecting rod 16 to increase the volume of the seed holding space. Under the action of the seed population and the swing of the connecting rod 16 itself, the seed removal slider 15 vibrates to a certain extent, which disturbs the surrounding seed population and is conducive to seeding. Since the rotation center of the gravity block 17 does not coincide with the rotation center of the seeding disc assembly 6, the eccentric rotation of the gravity block 17 drives the seeding slider 15 to overcome gravity and move inward before entering the seeding area, thereby clamping the seeds. The process of the seeding disc assembly 6 carrying the seeds in the seeding area is also a process of the seeding slider constantly sliding inward. During this process, the volume of the seed holding space is continuously reduced, and the seeds that are stably clamped slide inward to avoid being thrown out by centrifugal force. Unstable clamping or multiple seeds can be gradually clamped or squeezed out of the seed holding space and fall back into the seed population, completing seed carrying and seed clearing. When the seeding disc assembly 6 enters the seeding area, the gravity block 17 and the limit block 10 are forced to engage, lifting the gravity block and driving the seeding slider 15 to move outward. Under the combined action of the seeding spring teeth 9, the seeds are taken out. The seeds pass through the seed guide channel and enter the closed duckbill 3 under the action of gravity and centrifugal force. As the duckbill 3 contacts the soil, the duckbill opens and the seeds fall into the soil to complete the sowing process, and the operation is carried out in a continuous cycle.

Claims

1. An active clamping type irregular seed drill for rapid seeding, which is mainly composed of a fixed plate, a central axis, a seeding plate assembly, a moving plate, a duckbill and a shell, and is characterized by: The movable disk is connected to the central axis through a bearing, and a seed inlet and an adjustment knob for seeds with different morphological characteristics are provided on the end surface of the movable disk. The adjusting knob is connected to the limit block in the seeding disk assembly through a pin shaft. When the adjusting knob is rotated, the limit block also rotates accordingly. The outer side of the limit block is tangent to the gravity block in the seeding area. The gravity block is hinged to the seed-taking slider through a connecting rod. There are a total of thirteen seed-taking sliders evenly distributed in the seeding disk slot, which can achieve a small range of radial sliding in the slot. The seeding disk assembly is connected to the fixed disk through screws, and it and the shell together constitute a seed holder that can accommodate seeds. There is a space between the fixed plate and the seed disc assembly, and thirteen seed guide channels are arranged between the fixed plate and the seed disc assembly. A through hole is provided on the end surface where the seed guide channel coincides with the seed disc. The through hole and the shaped hole on the seed disc are at the same height. The diameter of the through hole is larger than the outer contour of the shaped hole. The shaped hole contour on the seed disc and the shaped hole contour on the seed-taking slider together form a three-quarter trajectory of an ellipse. A through groove with a width smaller than the minimum size of the seed is provided at the lower end of the seed guide channel. The outer side of the seed guide channel is connected to the duckbill, and there is a channel connection inside. After the seed enters the seed drill, the adjustment knob is turned to the corresponding position according to the parameters of the seed. The seed taking slider on the seeding disc enters the seed taking area during operation, and the built-in gravity block falls under the action of gravity, and drives the seed taking slider to move outward through the connecting rod to increase the volume of the seed holding space, which is conducive to seeding; because the rotation center of the gravity block does not coincide with the rotation center of the seeding disc assembly, the eccentric rotation of the gravity block drives the seed taking slider to overcome gravity and move inward before entering the seed carrying area to achieve seed clamping. The process of the seeding disc assembly carrying seeds in the seeding area is also a process of the seed taking slider constantly sliding inward. During this process, the volume of the seed holding space is constantly reduced, and the stably clamped seeds are moved to the seeding area. The inner sliding prevents the seeds from being thrown out by centrifugal force, and unstable clamping or multiple seeds can be gradually clamped or squeezed out of the seed holding space and fall back into the seed population, completing seed carrying and seed cleaning; when the seed tray assembly enters the seeding area, the gravity block and the limit block are forced to engage, lifting the gravity block and driving the seed-taking slider to move outward to bring out the seeds, completing the seeding; the adjustment process is divided into two parts: passive adjustment and active adjustment. Passive adjustment is manual adjustment with a large adjustable range and can adapt to the differences between different species. Active adjustment is adjustment based on its own movement laws, with a small adjustment range and can adapt to the differences between different individuals of the same species.

Images