Rotary row unit metering seed divider

Abstract

The application discloses a rotating type row precision seed sorting device, which comprises a fixed base and a seed sorting assembly. The seed sorting assembly is capable of performing translational rotation under the driving action of a driving mechanism. The seed sorting assembly comprises a seed sorting belt, a seed limiting unit and a rotating seat. The seed sorting belt is provided with multiple rows of seed filling holes. The upper half of the seed sorting belt is provided with a horizontal section and an inclined section. The seed limiting unit limits the piled seeds above the horizontal section. The seed sorting assembly further comprises a scraper belt mechanism, which comprises a belt part and multiple scrapers. The scrapers are perpendicular to the belt surface of the belt part. The lower belt section of the belt part is parallel to the horizontal section, and the running directions of the two are opposite. The seed sorting device makes the seeds in the seed storage space fully move and efficiently fill into the seed filling holes through the layout of the seed sorting belt and the overall rotation of the seed sorting assembly. The seeds on the inclined section are rolled to the root. Meanwhile, the scrapers of the scraper belt mechanism move in the opposite direction to push back and flatten the gathered seeds, so that the seeds are prevented from piling up.

Description

Technical Field

[0001] This invention relates to the field of agricultural machinery technology, and in particular to a rotary row precision seeding device. Background Technology

[0002] In mechanized agricultural sowing operations, precision seed metering devices are the core components for achieving efficient sowing, and their performance directly affects sowing uniformity, seed utilization rate, and crop yield. Currently, common seed metering devices mainly include mechanical seed metering devices and pneumatic seed metering devices. Mechanical seed metering devices mostly adopt a fixed orifice plate or grooved wheel structure, forcibly filling seeds through mechanical movement. Although the structure is simple, it is prone to problems such as low filling rate and severe seed damage during high-speed operation, especially with poor adaptability to seeds with irregular shapes or large size differences. While pneumatic seed metering devices can achieve high-precision single-seed sowing, they have drawbacks such as complex structure, high energy consumption, and difficult maintenance. They also require a high degree of seed surface cleanliness and are prone to clogging and performance degradation in complex field environments.

[0003] In existing technologies, such as the mechanical rice seedling tray precision sowing device disclosed in patent CN208300268U, a perforated belt is used to circulate and rotate within the seed box for seed filling. Excess seeds are removed by a brush assembly, achieving precise sowing of 3-4 rice seeds per hole. This device passively fills the perforated belt by tilting a portion of it within the seed box, causing the perforations to move from the depth to the opening. While this method avoids seed damage and has a relatively simple structure, it requires a deep filling of seeds within the seed box to reduce the leakage rate, increasing the overall volume of the structure. Furthermore, it still cannot guarantee a high filling success rate, and the leakage rate increases as the seed thickness within the seed box decreases. Additionally, using a roller brush to clean seeds from the belt surface at the seed box opening involves high cleaning pressure, making it difficult to clean completely. The belt can also carry seeds through the roller brush, affecting the seed dispensing accuracy. Summary of the Invention

[0004] Purpose of the invention: In order to overcome the shortcomings of the existing technology, the present invention provides a rotary row precision seeding device with a compact structure that can ensure the success rate of seed filling with a small seed layer thickness.

[0005] Technical solution: To achieve the above objectives, the present invention provides a rotary row precision seeding device, which includes a fixed base and a seeding component. The seeding component is capable of translational and rotary motion relative to the fixed base under the driving action of a driving mechanism. The seeding component includes a seeding belt, a seed limiting unit, and a rotary seat. The seeding belt has multiple rows of seed filling holes.

[0006] The upper half of the seeding belt has a horizontal section and an inclined section. The seed limiting unit restricts the pile of seeds above the horizontal section, so that the horizontal section and the seed limiting unit enclose a seed storage space. During operation, the seed filling hole passes through the horizontal section first and then the inclined section.

[0007] The sorting component also includes a scraper belt mechanism, which includes a belt section and a plurality of scrapers equidistantly mounted on the belt section, wherein the scrapers are perpendicular to the belt surface of the belt section.

[0008] The lower section of the belt is parallel to the horizontal section, and the two run in opposite directions.

[0009] When the above structure is in operation, the seed distribution belt moves, causing different parts of it to alternately serve as horizontal and inclined sections. That is, the specific belt surface corresponding to the horizontal and inclined sections is constantly changing. The specific belt surface in the horizontal section serves as the bottom of the seed storage space. As the seed distribution belt moves, the filling holes pass through the seed storage space to bring the seeds in the seed storage space to the inclined section. The overall rotation of the seed distribution component can, on the one hand, enable the seeds in the seed storage space to move fully and promote the seeds to enter each filling hole. On the other hand, it can promote the seeds on the inclined section that have not entered the filling holes to roll down to the root of the inclined section. The scraper on the scraper belt mechanism moves back relative to the horizontal section, which can transport and scrape the seeds gathered at the root of the inclined section back, ensuring the uniformity of the seeds in the seed storage space.

[0010] The aforementioned rotary row precision seeding device can accurately seed row by row, meeting the seeding requirements of seedling trays.

[0011] Furthermore, the rotating base and the fixed base are connected by a slide rail assembly. The slide rail assembly includes two horizontal slide rails fixed on the fixed base and two vertical slide rails. Each vertical slide rail is fixed with a transition seat, and each transition seat has a first slider fixed at both ends that respectively cooperates with the two horizontal slide rails. The rotating base is fixed with a second slider that cooperates with the vertical slide rail.

[0012] Furthermore, the driving mechanism includes a drive motor, an input shaft connected to the drive motor, and an output shaft connected to the rotary seat. The input shaft is connected to the output shaft through an eccentric adjustment mechanism. The eccentric adjustment mechanism includes a first connecting block connected to the input shaft and a second connecting block connected to the output shaft. The first connecting block has a groove for the second connecting block to slide and adjust its position within it, and the positions of the two adjusting blocks can be fixed to each other.

[0013] Furthermore, the second connecting block has a wide body and a narrow body, with a transition step between them. Correspondingly, the slide also has a wide groove and a narrow groove. The end of the first connecting block is equipped with a first screw that acts on the transition step. The side of the first connecting block is equipped with a second screw for fixing the second connecting block. The side of the first connecting block has a strip hole for the second screw to pass through and move along it.

[0014] When adjusting the eccentricity, first loosen the second screw, then rotate the first screw while keeping the stepped part of the second connecting block against the end of the first screw. This allows for precise fine-tuning of the eccentricity. After adjustment, tighten the second screw.

[0015] Furthermore, the rotating seat includes a main frame and an adjustable frame that can rotate relative to the main frame to adjust its angle. The tilt angle of the tilting section can change as the tilt angle of the adjustable frame changes. Thus, the angle of the tilting section can be adjusted as needed to facilitate adjustment of the tilt degree according to differences in seed type, ensuring the effective removal of excess seeds from the belt surface.

[0016] Furthermore, to further remove excess seeds carried on the surface of the tape, an active roller brush is installed on the upper front side of the inclined section. The operation of the active roller brush can effectively remove seeds that have not been filled into the filling holes on the tape surface. Multiple guide buckets in a linear array are installed on the upper rear side of the inclined section. The number of guide buckets is the same as the number of rows of filling holes. In this way, each guide bucket guides the seeds discharged from each row of filling holes to different seedling holes in the seedling tray to prevent confusion.

[0017] Furthermore, the seed limiting unit includes a front seed blocking plate and two side seed blocking plates.

[0018] Furthermore, the side baffle plate is a fixed baffle plate fixed relative to the rotating seat, or it is an annular flexible baffle plate fixed on the seeding belt.

[0019] Beneficial effects: The rotary row precision sorting device of the present invention has the following beneficial effects:

[0020] (1) This invention, through the layout of the seed-seedling belt and the overall rotational action of the seed-seedling components, enables seeds in the seed storage space to move fully and efficiently fill the seed-filling holes, while unfilled seeds in the inclined section roll down to the roots. At the same time, the scraper belt mechanism uses a scraper moving in the opposite direction to push back and flatten the accumulated seeds, preventing accumulation. The rotational action further enhances the uniform distribution of seeds, ensuring that the seed-filling holes accurately carry seeds and maintain a stable seed density in the seed storage space, effectively improving the seed-seedling accuracy and operational reliability, and ensuring a high success rate of seed filling with a smaller seed layer thickness.

[0021] (2) By setting up slide rails with a horizontal and vertical layout, the rotating seat can reliably translate relative to the fixed base to achieve stable rotating motion.

[0022] (3) The rotation radius can be easily adjusted to adjust the rotation filling effect and the rolling effect on the inclined section.

[0023] (4) By using the seed limiting unit to enclose a seed storage space on the horizontal section, there is no need to set up a seed box with a specification larger than the seed distribution belt. This can reduce the overall size of the seed distribution device, improve the structural compactness, and facilitate the miniaturization of the equipment. Attached Figure Description

[0024] Figure 1 This is a side view of the rotary row precision sorting device.

[0025] Figure 2 This is a rear view of the rotary row precision sorting device.

[0026] Figure 3 A three-dimensional structural diagram of a rotary row precision sorting device;

[0027] Figure 4 A cross-sectional view of a rotary row precision sorting device;

[0028] Figure 5 for Figure 4 Enlarged structural diagram of section A;

[0029] Figure 6 This is a structural diagram of some parts in the drive mechanism.

[0030] Figure 7 This is a structural diagram of a seed restriction unit in one embodiment.

[0031] In the diagram: A - Fixed base; B - Seeding assembly; C - Drive mechanism; 1 - Seeding belt; 1a - Horizontal section; 1b - Inclined section; 1c - Seed filling hole; 2 - Seed limiting unit; 21 - Front seed baffle; 22 - Side seed baffle; 3 - Rotating seat; 31 - Main frame; 32 - Adjustable frame; 4 - Scraper belt mechanism; 41 - Belt section; 42 - Scraper; 5 - Slide rail assembly; 51 - Horizontal slide rail; 52 - Vertical slide rail; 53 - Transition seat; 61 - Drive motor; 62 - Input shaft; 63 - Output shaft; 64 - First connecting block; 64a - Slide groove; 65 - Second connecting block; 65a - Wide body; 65b - Narrow body; 66 - First screw; 67 - Second screw; 7 - Guide bucket; 8 - Active roller brush. Detailed Implementation

[0032] The invention will now be further described with reference to the accompanying drawings.

[0033] like Figures 1 to 4 The rotary precision seeding device shown includes a fixed base A and a seeding component B. The seeding component B can perform translational and rotary motion relative to the fixed base A under the driving action of the driving mechanism C. The seeding component B includes a seeding belt 1, a seed limiting unit 2, and a rotary seat 3. The seeding belt 1 has multiple rows of seed filling holes 1c.

[0034] The upper half of the seeding belt 1 has a horizontal section 1a and an inclined section 1b. The seed limiting unit 2 restricts the pile of seeds above the horizontal section 1a, so that the horizontal section 1a and the seed limiting unit 2 enclose a seed storage space. During operation, the seed filling hole 1c passes through the horizontal section 1a first and then through the inclined section 1b.

[0035] The sorting component B also includes a scraper belt mechanism 4, which includes a belt section 41 and a plurality of scrapers 42 equidistantly mounted on the belt section 41. The scrapers 42 are perpendicular to the belt surface of the belt section 41.

[0036] The lower belt section of the belt section 41 is parallel to the horizontal section 1a, and the two run in opposite directions.

[0037] When the above structure is in operation, the seed distribution belt 1 operates, causing different parts of it to alternately serve as the horizontal section 1a and the inclined section 1b. That is, the specific belt surface corresponding to the horizontal section 1a and the inclined section 1b is constantly changing. The specific belt surface of the horizontal section 1a serves as the bottom of the seed storage space. As the seed distribution belt 1 operates, the filling hole 1c passes through the seed storage space to bring the seeds in the seed storage space to the inclined section 1b. The rotation of the seed distribution component B as a whole can, on the one hand, enable the seeds in the seed storage space to move fully and promote the seeds to enter each filling hole 1c. On the other hand, it can promote the seeds on the inclined section 1b that have not entered the filling hole 1c to roll down to the root of the inclined section 1b. The scraper 42 on the scraper belt mechanism 4 moves back relative to the horizontal section 1a, which can transport and scrape the seeds gathered at the root of the inclined section 1b back, ensuring the uniformity of the seeds in the seed storage space.

[0038] This invention, through the layout of the seed-seedling belt 1 and the overall rotational action of the seed-seedling component B, ensures that seeds within the seed storage space move fully and efficiently fill the seed-filling holes 1c, while unfilled seeds on the inclined section 1b roll down to the roots. Simultaneously, the scraper 42, moving in the opposite direction using the scraper belt mechanism 4, pushes and flattens any accumulated seeds, preventing pile-up. The rotational action further enhances the uniform distribution of seeds, ensuring accurate seed carrying within the seed-filling holes and maintaining a stable seed density within the seed storage space, effectively improving seed-seedling accuracy and operational reliability.

[0039] The aforementioned rotary row precision seeding device can accurately seed row by row, meeting the seeding requirements of seedling trays.

[0040] Preferably, the rotating base 3 is connected to the fixed base A via a slide rail assembly 5. The slide rail assembly 5 includes two horizontal slide rails 51 fixed to the fixed base A and two vertical slide rails 52. Each vertical slide rail 52 is fixed with a transition seat 53, and each transition seat 53 has a first slider 54 fixed at both ends, which respectively cooperates with the two horizontal slide rails 51. The rotating base 3 is fixed with a second slider 55 that cooperates with the vertical slide rails 52. By setting the slide rails in a horizontal and vertical layout, the rotating base 3 can reliably translate relative to the fixed base A, achieving stable rotating motion.

[0041] Preferably, such as Figure 4 and Figure 5 As shown, the drive mechanism C includes a drive motor 61, an input shaft 62 connected to the drive motor 61, and an output shaft 63 connected to the rotary seat 3. The input shaft 62 is connected to the output shaft 63 through an eccentric adjustment mechanism. The eccentric adjustment mechanism includes a first connecting block 64 connected to the input shaft 62 and a second connecting block 65 connected to the output shaft 63. The first connecting block 64 has a groove 64a in which the second connecting block 65 slides to adjust its position, and the positions of the two adjusting blocks can be fixed to each other.

[0042] Preferably, the second connecting block 65 has a wide body 65a and a narrow body 65b, with a transition step between them. Correspondingly, the slide groove 64a also has a wide groove and a narrow groove. The end of the first connecting block 64 is equipped with a first screw 66 that acts on the transition step. The side of the first connecting block 64 is equipped with a second screw 67 for fixing the second connecting block 65. The side of the first connecting block 64 is provided with a strip hole for the second screw 67 to pass through and move along it.

[0043] When adjusting the eccentricity, first loosen the second screw 67, then rotate the first screw 66 while keeping the stepped part of the second connecting block 65 against the end of the first screw 66. This allows for precise fine-tuning of the eccentricity. After adjustment, tighten the second screw 67.

[0044] Preferably, the rotating seat 3 includes a main frame 31 and an adjustable frame 32 that can rotate relative to the main frame 31 to adjust its angle. The tilt angle of the tilting section 1b can be changed as the tilt angle of the adjustable frame 32 changes. In this way, the angle of the tilting section 1b can be adjusted as needed to facilitate adjustment of the tilt degree of the tilting section 1b according to the difference in seed type, so as to ensure the effect of removing excess seeds from the tape surface.

[0045] Preferably, in order to further remove excess seeds carried on the surface of the tape, an active roller brush 8 is installed on the upper front side of the inclined section 1b. The operation of the active roller brush 8 can effectively remove seeds on the tape that have not been filled into the filling holes 1c. A plurality of guide buckets 7 in a linear array are installed on the upper rear side of the inclined section 1b. The number of guide buckets 7 is the same as the number of rows of filling holes 1c. In this way, each guide bucket 7 guides the seeds discharged from each row of filling holes 1c to different seedling holes in the seedling tray to prevent confusion.

[0046] In one approach, such as Figure 3 As shown, the seed limiting unit 2 includes a front seed blocking plate 21 and two side seed blocking plates 22.

[0047] By using the seed limiting unit 2 to enclose a seed storage space on the horizontal section 1a, there is no need to set up a seed box with a specification larger than the seed distribution belt 1, which can reduce the overall size of the seed distribution device.

[0048] In the other option, such as Figure 7 As shown, the side baffle plate 22 is a fixed baffle plate fixed relative to the rotating seat 3, or an annular flexible baffle plate fixed on the seeding belt 1.

[0049] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A rotary precision seeding device, comprising a fixed base (A) and a seeding assembly (B), wherein the seeding assembly (B) is capable of translational and rotary motion relative to the fixed base (A) under the driving action of a driving mechanism (C); the seeding assembly (B) comprises a seeding belt (1), a seed limiting unit (2), and a rotating seat (3); the seeding belt (1) has multiple rows of seed filling holes (1c); characterized in that: The upper half of the seeding belt (1) has a horizontal section (1a) and an inclined section (1b), and the seed limiting unit (2) restricts the pile of seeds above the horizontal section (1a). The sorting component (B) further includes a scraper belt mechanism (4), which includes a belt section (41) and a plurality of scrapers (42) equidistantly mounted on the belt section (41), wherein the scrapers (42) are perpendicular to the belt surface of the belt section (41). The lower belt section of the belt section (41) is parallel to the horizontal section (1a), and the two run in opposite directions. The rotating base (3) is connected to the fixed base (A) via a slide rail assembly (5). The slide rail assembly (5) includes two horizontal slide rails (51) fixed on the fixed base (A) and two vertical slide rails (52). Each vertical slide rail (52) is fixed with a transition seat (53), and each transition seat (53) has a first slider (54) fixed at both ends that respectively cooperates with the two horizontal slide rails (51). The rotating base (3) is fixed with a second slider (55) that cooperates with the vertical slide rail (52). The drive mechanism (C) includes a drive motor (61), an input shaft (62) connected to the drive motor (61), and an output shaft (63) connected to the rotary seat (3). The input shaft (62) is connected to the output shaft (63) through an eccentric adjustment mechanism. The eccentric adjustment mechanism includes a first connecting block (64) connected to the input shaft (62) and a second connecting block (65) connected to the output shaft (63). The first connecting block (64) has a groove (64a) for the second connecting block (65) to slide and adjust its position within it, and the positions of the first connecting block (64) and the second connecting block (65) can be fixed to each other. The second connecting block (65) has a wide body (65a) and a narrow body (65b) with a transition step between them. Correspondingly, the slide (64a) also has a wide groove and a narrow groove. The end of the first connecting block (64) is equipped with a first screw (66) that acts on the transition step. The side of the first connecting block (64) is equipped with a second screw (67) for fixing the second connecting block (65). The side of the first connecting block (64) has a strip hole for the second screw (67) to pass through and move along it.

2. The rotary row-separation precision sorting device according to claim 1, characterized in that, The rotating seat (3) includes a main frame (31) and an adjustable frame (32) that can rotate relative to the main frame (31) to adjust the angle. The tilt angle of the tilting section (1b) can change with the change of the tilt angle of the adjustable frame (32).

3. The rotary row-type precision sorting device according to claim 1, characterized in that, An active roller brush (8) is installed on the front side of the upper end of the inclined section (1b); a plurality of guide buckets (9) in a linear array are installed on the rear side of the upper end of the inclined section (1b), the number of guide buckets (9) being consistent with the number of columns of the seed filling hole (1c).

4. The rotary row-separation precision sorting device according to claim 1, characterized in that, The seed limiting unit (2) includes a front seed blocking plate (21) and two side seed blocking plates (22).

5. The rotary row-type precision sorting device according to claim 4, characterized in that, The side baffle plate (22) is a fixed baffle plate fixed relative to the rotating seat (3), or an annular flexible baffle plate fixed on the seeding belt (1).

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