CA2379078A1 - Seed metering device - Google Patents
Seed metering device Download PDFInfo
- Publication number
- CA2379078A1 CA2379078A1 CA 2379078 CA2379078A CA2379078A1 CA 2379078 A1 CA2379078 A1 CA 2379078A1 CA 2379078 CA2379078 CA 2379078 CA 2379078 A CA2379078 A CA 2379078A CA 2379078 A1 CA2379078 A1 CA 2379078A1
- Authority
- CA
- Canada
- Prior art keywords
- roller
- nip
- pair
- array
- rigid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C7/00—Sowing
- A01C7/08—Broadcast seeders; Seeders depositing seeds in rows
- A01C7/12—Seeders with feeding wheels
- A01C7/127—Cell rollers, wheels, discs or belts
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Environmental Sciences (AREA)
- Sowing (AREA)
- Rolls And Other Rotary Bodies (AREA)
Abstract
A seed metering device includes a roller nip for mounting beneath a seed reservoir.
The nip is formed by first and second opposed facing nip forming surfaces mounted beneath, and aligned with, the reservoir wherein the first nip forming surface is a radially-outer surface of a soft resilient roller. The roller is rotatable by a roller drive in a first rotational direction so as to draw down through the nip, by frictional engagement of the seeds in the nip with the surface of the resilient roller, seeds falling into the nip. The nip is an elongate, curved, thin wedge-shaped nip providing an increased dwell time for seeds being compressed in the nip.
The nip is formed by first and second opposed facing nip forming surfaces mounted beneath, and aligned with, the reservoir wherein the first nip forming surface is a radially-outer surface of a soft resilient roller. The roller is rotatable by a roller drive in a first rotational direction so as to draw down through the nip, by frictional engagement of the seeds in the nip with the surface of the resilient roller, seeds falling into the nip. The nip is an elongate, curved, thin wedge-shaped nip providing an increased dwell time for seeds being compressed in the nip.
Claims (20)
1. A seed metering device comprising:
an upper member for mounting beneath a reservoir for holding granular material, said upper member having an aperture cooperating in fluid communication with said reservoir, first and second opposed facing nip forming surfaces mounted beneath said aperture so as to form a primary nip below said aperture so that granular material falls through said aperture into said primary nip, wherein said first nip forming surface is a radially-outer surface of a resilient cylindrical roller and said second nip forming surface is a rigid curved control surface on a lower wall mounted beneath said upper member and adjacent said roller, said roller rotatable about an axis of rotation by a roller drive driven by driving means in a first rotational direction so as to draw the granular material down through said primary nip, by frictional engagement of the granular material in said nip with said surface of said resilient roller, said control surface having a center of curvature offset from said axis of rotation of said roller so that said control surface and said roller are eccentric and said primary nip is elongate, curved and wedge-shaped, a vertex of said wedge-shape of said primary nip being at a lower end of said control surface beneath said roller, said vertex including at a lower, downstream-most end, a substantially horizontal flat spreader surface extending across the width of said vertex, said seeds following a pathway from said first aperture, into a wide upper opening of said primary nip and into compressed engagement between said roller and said control surface so as to resiliently deform said roller as said roller resiliently urges said seeds into a single thickness layer as said primary nip converges to said vertex and the granular material is drawn through said primary nip so as to emerge downstream of said vertex for dropping into an outfeed chute.
an upper member for mounting beneath a reservoir for holding granular material, said upper member having an aperture cooperating in fluid communication with said reservoir, first and second opposed facing nip forming surfaces mounted beneath said aperture so as to form a primary nip below said aperture so that granular material falls through said aperture into said primary nip, wherein said first nip forming surface is a radially-outer surface of a resilient cylindrical roller and said second nip forming surface is a rigid curved control surface on a lower wall mounted beneath said upper member and adjacent said roller, said roller rotatable about an axis of rotation by a roller drive driven by driving means in a first rotational direction so as to draw the granular material down through said primary nip, by frictional engagement of the granular material in said nip with said surface of said resilient roller, said control surface having a center of curvature offset from said axis of rotation of said roller so that said control surface and said roller are eccentric and said primary nip is elongate, curved and wedge-shaped, a vertex of said wedge-shape of said primary nip being at a lower end of said control surface beneath said roller, said vertex including at a lower, downstream-most end, a substantially horizontal flat spreader surface extending across the width of said vertex, said seeds following a pathway from said first aperture, into a wide upper opening of said primary nip and into compressed engagement between said roller and said control surface so as to resiliently deform said roller as said roller resiliently urges said seeds into a single thickness layer as said primary nip converges to said vertex and the granular material is drawn through said primary nip so as to emerge downstream of said vertex for dropping into an outfeed chute.
2. The device of claim 1 wherein said roller has a resilient core.
3. The device of claim 2 wherein said roller is made of polyurethane foam.
4. The device of claim 3 wherein said polyurethane foam is 40 pound polyurethane foam.
5. The device of claim 1 wherein said second nip forming surface includes a rigid flow restrictor.
6. The device of claim 5 wherein said flow restrictor is a rigid nozzle surface of a nozzle mounted beneath said aperture.
7. The device of claim 6 wherein said rigid nozzle surface is a lower surface of a converging nozzle conduit extending through said nozzle.
8. The device of claim 7 wherein said nozzle has a curved lower surface flush with said surface of said roller, said nozzle conduit terminating in an aperture in said curved lower surface so as to form a secondary nip between said nozzle surface and said surface of said roller.
9. The device of claim 1 wherein said roller is mounted on a drive shaft of said roller drive, a pair of rigid discs mounted one on each opposite side of said roller so as to sandwich said roller between said pair of rigid discs leaving said radially-outer surface of said roller exposed for rotation through said primary nip.
10. The device of claim 9 wherein said pair of rigid discs are rigidly mounted on said drive shaft and snugly sandwich said roller mounted in adhesive engagement therebetween so that rotation of said pair of rigid discs on said drive shaft simultaneously rotates said roller.
11. The device of claim 9 wherein a pair of rigid walls are mounted below said floor, generally orthogonal thereto, said pair of walls having apertures therein, said drive shaft journalled through said apertures in said pair of walls, said pair of walls sandwiching therebetween said pair of rigid discs and said roller.
12. The device of claim 11 wherein each wall of said pair of walls has arcuate disc supports formed therein for sliding rotational mating of said pair of rigid discs into said disc supports.
13. The device of claim 1 wherein said roller is a parallel array of rollers, said array extending the length of said first aperture.
14. The device of claim 1 wherein said surface of said roller is notched.
15. The device of claim 1 wherein said center of curvature of said roller is offset downwardly from said center of curvature of said control surface.
16. The device of claim 1 wherein said center of curvature of said roller is offset outwardly from said center of curvature of said control surface and away from said control surface.
17. The device of claim 13 further comprising a roller housing, wherein said roller housing has a shaft rotatably mounted in opposite end walls of said housing, said housing enclosing said array of rollers when said array of rollers are mounted on said shaft for simultaneous rotation of said array of rollers by said shaft, and wherein said lower wall is formed as part of said roller housing.
18. The device of claim 17 wherein said roller housing is a modular array of roller housings each array having rotatably mounted therein a corresponding said array of rollers, wherein all of the rollers of said arrays of rollers in said array of roller housings are mounted on a common said shaft.
19. The device of claim 18 wherein said shaft is driven by a gear linkage and a stepper motor, said motor driving said gear linkage, said gear linkage driving said shaft.
20. The device of claim 1 wherein said drive means is a stepper motor.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2379078A CA2379078C (en) | 2002-03-26 | 2002-03-26 | Seed metering device |
| AU2003213918A AU2003213918A1 (en) | 2002-03-26 | 2003-03-25 | Seed metering device |
| PCT/CA2003/000432 WO2003079760A1 (en) | 2002-03-26 | 2003-03-25 | Seed metering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2379078A CA2379078C (en) | 2002-03-26 | 2002-03-26 | Seed metering device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2379078A1 true CA2379078A1 (en) | 2003-09-26 |
| CA2379078C CA2379078C (en) | 2011-06-07 |
Family
ID=28048267
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2379078A Expired - Lifetime CA2379078C (en) | 2002-03-26 | 2002-03-26 | Seed metering device |
Country Status (3)
| Country | Link |
|---|---|
| AU (1) | AU2003213918A1 (en) |
| CA (1) | CA2379078C (en) |
| WO (1) | WO2003079760A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3815499A1 (en) * | 2019-10-31 | 2021-05-05 | Deere & Company | Method for identifying commodity flow through a meter on a seeder |
| EP3858126A4 (en) * | 2018-09-30 | 2022-08-10 | Guangzhou Xaircraft Technology Co., Ltd. | Material broadcast sowing device, unmanned aerial vehicle and material broadcast sowing method |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104322182A (en) * | 2014-11-25 | 2015-02-04 | 柳州美纳机械有限公司 | Seeder |
| CN105027763A (en) * | 2015-08-14 | 2015-11-11 | 广西大学 | Small-sized mung bean seeding device |
| US10750658B2 (en) | 2018-03-08 | 2020-08-25 | Cnh Industrial America Llc | Multi-variety seed meter with priority delivery of earlier supplied seed |
| US10750665B1 (en) | 2019-02-01 | 2020-08-25 | Cnh Industrial Canada, Ltd. | Meter roller system |
| US10757857B2 (en) | 2019-02-01 | 2020-09-01 | Cnh Industrial Canada, Ltd. | Meter roller insert system |
| US10736264B1 (en) | 2019-02-01 | 2020-08-11 | Cnh Industrial Canada, Ltd. | Modular meter roller shaft system |
| US11390471B2 (en) | 2019-11-22 | 2022-07-19 | Cnh Industrial America Llc | Agricultural product delivery applicator having a hydraulic circuit for controlling a metering system for the product |
| IT202000000049A1 (en) * | 2020-01-03 | 2021-07-03 | Idrogeo Tec Srl | Machine for dosing granular products |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1583008A (en) * | 1924-08-09 | 1926-05-04 | Int Harvester Co | Seed-dispensing mechanism |
| US2237504A (en) * | 1938-12-12 | 1941-04-08 | Royce M Roath | Seed disperser |
| FR1272898A (en) * | 1960-11-07 | 1961-09-29 | Usines Edouard De Saint Hubert | Seed distributor for seed drills |
| GB1079333A (en) * | 1964-04-24 | 1967-08-16 | Quillot Ltd | Distributing apparatus |
| US5878679A (en) * | 1997-08-18 | 1999-03-09 | Deere & Company | Product disconnect for metering device |
| BR0017346A (en) * | 2000-09-28 | 2004-02-10 | Noel D Lempriere | Seed Dosing Device |
-
2002
- 2002-03-26 CA CA2379078A patent/CA2379078C/en not_active Expired - Lifetime
-
2003
- 2003-03-25 WO PCT/CA2003/000432 patent/WO2003079760A1/en not_active Application Discontinuation
- 2003-03-25 AU AU2003213918A patent/AU2003213918A1/en not_active Abandoned
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3858126A4 (en) * | 2018-09-30 | 2022-08-10 | Guangzhou Xaircraft Technology Co., Ltd. | Material broadcast sowing device, unmanned aerial vehicle and material broadcast sowing method |
| EP3815499A1 (en) * | 2019-10-31 | 2021-05-05 | Deere & Company | Method for identifying commodity flow through a meter on a seeder |
| US12102031B2 (en) | 2019-10-31 | 2024-10-01 | Deere & Company | Meter housing apparatus and meter flow detection method |
Also Published As
| Publication number | Publication date |
|---|---|
| AU2003213918A1 (en) | 2003-10-08 |
| WO2003079760A1 (en) | 2003-10-02 |
| CA2379078C (en) | 2011-06-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2423894A1 (en) | Seed metering device | |
| CA2379078A1 (en) | Seed metering device | |
| RU2355152C2 (en) | Seed drill for outputting seed material | |
| CN102833996B (en) | The distributor of shot-like particle | |
| JP2862697B2 (en) | Apparatus and method for rotatingly disposing a strip material on a substrate | |
| EP3146828B1 (en) | Volumetric meter assembly | |
| CA1255158A (en) | Seed dispensing device | |
| US20220348372A1 (en) | Doser assemblies, apparatuses including a doser assembly, and/or methods of making the same | |
| CA2490876A1 (en) | A volumetric metering device for the metered delivery of granular and powdery materials, particularly for machines for distributing the said materials | |
| US6758153B1 (en) | Easily adjustable double eliminator | |
| CN211090606U (en) | Get material subassembly, broadcast sowing device and plant protection equipment | |
| US11006566B2 (en) | Seed metering device drive system and method | |
| CN216087569U (en) | Electric-driven duplex seed sowing device | |
| JP3909360B2 (en) | Powder and particle feeding device | |
| KR100663692B1 (en) | Apparatus for discharge of gift certificate | |
| FR2867960A1 (en) | FORMAT SELECTOR DEVICE FOR DISTRIBUTOR APPARATUS FOR WIPING MATERIALS | |
| JP4502232B2 (en) | Floor soil supply device | |
| KR200219558Y1 (en) | Ginseng seeding machine | |
| JPS6287010A (en) | Seeder for growing seedling | |
| CN113950908A (en) | Electric-driven duplex seed sowing device | |
| JPS6010336Y2 (en) | Seeding machine | |
| JPS5837210Y2 (en) | Seed feeding device in seeding machine | |
| JPH022164Y2 (en) | ||
| JP2024522794A (en) | Device for individual distribution of material particles | |
| JPH0241726Y2 (en) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKEX | Expiry |
Effective date: 20220328 |