WO2011119590A1 - Doseur de graines à coefficient de frottement réduit - Google Patents

Doseur de graines à coefficient de frottement réduit Download PDF

Info

Publication number
WO2011119590A1
WO2011119590A1 PCT/US2011/029399 US2011029399W WO2011119590A1 WO 2011119590 A1 WO2011119590 A1 WO 2011119590A1 US 2011029399 W US2011029399 W US 2011029399W WO 2011119590 A1 WO2011119590 A1 WO 2011119590A1
Authority
WO
WIPO (PCT)
Prior art keywords
seed
vacuum
disc
seed disc
aperture
Prior art date
Application number
PCT/US2011/029399
Other languages
English (en)
Inventor
Kenneth E. Shoup
Original Assignee
Kinze Manufacturing, Inc.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kinze Manufacturing, Inc. filed Critical Kinze Manufacturing, Inc.
Publication of WO2011119590A1 publication Critical patent/WO2011119590A1/fr

Links

Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01C—PLANTING; SOWING; FERTILISING
    • A01C7/00—Sowing
    • A01C7/04—Single-grain seeders with or without suction devices
    • A01C7/042—Single-grain seeders with or without suction devices using pneumatic means
    • A01C7/044—Pneumatic seed wheels
    • A01C7/046—Pneumatic seed wheels with perforated seeding discs

Definitions

  • This invention relates generally to agricultural seed meters of the type having a rotating disc with peripheral spaced apertures to which seeds adhere by means of an applied vacuum and are released in a timed manner, and is particularly directed to an agricultural seed meter wherein the vacuum chamber rotates with the seed disc.
  • Vacuum seed meters are commonly used in agricultural planters in the planting of crops.
  • the typical vacuum seed meter includes a rotating seed disc having plural spaced apertures about its periphery. Each aperture is adapted to receive an individual seed which is maintained in position in the aperture on a first side of the seed disc by means of a vacuum applied to a second, opposed sided of the disc. Each seed is sequentially released from its aperture in the seed disc by interrupting the applied vacuum, allowing the seed to drop to the soil under the influence of gravity.
  • Vacuum seed meters have, to varying degrees, various operating limitations because of their design and the environment in which they operate. For example, a high vacuum must be maintained across the seed disc to securely maintain the seeds in position on the seed disc until they are released. The applied vacuum must be interrupted completely and very abruptly to allow for the consistent and accurate release of the individual seeds to ensure proper seed positioning and inter-seed spacing. Irregularities in seed position and inter-seed spacing result in poor plant development and reduced crop production. Failure to maintain a vacuum seal in the seed meter results in variations in the applied vacuum and introduction of crop residue or various other unwanted remnants, any of which can cause irregular and inconsistent seed meter performance, and damage to or failure of the seed meter.
  • Maintaining a high vacuum requires fixed seals between adjacent stationary components and intimate contact between adjacent moving components. Intimate contact between moving parts gives rise to component wear, formation of gaps between these moving parts over time, and a consequent reduction in the performance of the seed meter. In addition, frictional losses in many existing vacuum seed meters imposes substantially increased loads on the source of power for these types of agricultural implements, i.e., the tractor.
  • Still another object of the present invention is to prevent field residue from interfering with the positioning of seeds on, and the release of seeds from, the seed disc of a vacuum seed meter in an agricultural planter.
  • a vacuum seed meter may include a bowl- shaped vacuum chamber with a generally flat closed end portion with an aperture coupled to a vacuum line via a rotary coupling. Disposed within the vacuum chamber and coupled to the vacuum line in a fixed manner and extending radially outward from a central rotational axis of the vacuum chamber is a stationary arm having a cam follower with a plurality of inline rollers disposed on its distal end.
  • the cam follower may include four inline rollers.
  • Attached to the open end of the vacuum chamber opposite the vacuum line coupling in a sealed manner is the aligned, closely spaced combination of an outer seed disc having plural peripheral spaced seed-receiving apertures and an inner vacuum release disc having plural spaced radially extending, flexible fingers each having a seed aperture engaging member on its distal end and a cam following member disposed at an intermediate location on the finger along its length.
  • Rotation of the vacuum chamber and the combination of the seed disc and vacuum release disc causes the cam follower on the distal end of the stationary arm to sequentially engage each flexible finger of the rotating vacuum release disc.
  • the cam follower on the distal end of the stationary arm within the vacuum chamber includes plural inline engaging members, which in one exemplary embodiment include a plurality of roller bearings, each positioned over one or more flexible fingers proximate to consecutive seed- bearing apertures for removing the vacuum and allowing the sequential release of the seeds disposed over those apertures.
  • the cam follower may include four roller bearings to allow the sequential release of four seeds disposed over four apertures.
  • Each seed aperture engaging member is preferably in the form of a generally flat disc formed of a compressible material and includes a small projection for engaging and discharging from the seed disc aperture any debris remaining in the aperture following discharge of a seed therefrom.
  • FIG. 1 is an explored perspective view of a low friction seed meter in accordance with the principles of the present invention
  • FIG. 2 is a perspective view of the inventive low friction seed meter showing the outer cover portion of the seed meter's housing;
  • FIG. 3 is a perspective view of the inventive low friction seed meter showing the seed hopper side of the meter;
  • FIG. 4 is an end-on lateral view of the inventive low friction seed meter
  • FIG. 5 is a sectional view of the inventive low friction seed meter taken along site line
  • FIG. 6 is a sectional view of the inventive low friction seed meter taken along site line
  • FIG. 7 is a lateral view of the inventive low friction seed meter illustrating details of its seed hopper; and FIG. 8 is a perspective view of the combination of the inventive low friction seed meter's seed disc, finger wheel, seed hopper and rotary drive spindle.
  • Low friction seed meter 10 includes an outer, closed housing 12 comprised of a seed hopper 14 and an outer cover 16. First and second perspective views of the closed housing 12 are shown in FIGS. 2 and 3, while a side elevation view of the closed housing is shown in FIG. 4.
  • Seed hopper 14 and outer cover 16 are securely coupled together by means of plural connecting clips, three of which are shown as elements 24a, 24b and 24c in FIGS. 2 and 3.
  • a closed end of the outer cover 16 includes a center aperture 16a.
  • the outer surface of outer cover 16 is adapted for attachment to a vacuum inlet 18 by means of a rotary seal 16b disposed about the aperture 16a in the outer cover.
  • Rotary seal 16b provides a vacuum-tight seal between outer cover 16 and vacuum inlet 18, which is connected to a conventional vacuum source (which is not shown in the figures for simplicity).
  • a rotating vacuum chamber 20 Disposed in outer cover 16 is a rotating vacuum chamber 20 having a center aperture 20a therein. Disposed between and positioned in contact with the outer cover 16 and rotating vacuum chamber 20, and aligned with the respective apertures 16a and 20a therein, is a rotary vacuum coupling 26 having an aperture 26a therein. Rotary vacuum coupling 26 functions as a slip joint, permitting rotational displacement between outer cover 16 and vacuum chamber 20 while maintaining a vacuum seal therebetween.
  • a central vacuum sealed inlet 22a of a fixed, or stationary, arm 22 Disposed within rotating vacuum chamber 20 and extending through the aperture 20 therein is a central vacuum sealed inlet 22a of a fixed, or stationary, arm 22. Central vacuum sealed inlet 22a is coupled in a sealed manner to vacuum inlet 18. A vacuum is produced in vacuum chamber 20 by the fixed arm's central vacuum sealed inlet 22a which is coupled to a vacuum source via the vacuum inlet 18. Disposed on the distal end of fixed arm 22 is a cam follower 22b with roller bearings which is described in detail below.
  • a rotary drive spindle 42 Extending through aligned apertures 16a, 26a, 20a and an aperture in the central vacuum sealed inlet 22a of fixed arm 22 is a rotary drive spindle 42.
  • One end of the rotary drive spindle 42 passes through the vacuum inlet 18, in a sealed manner, while a second, opposed end of the rotary drive spindle is coupled to a rotary bearing attached to an inner portion of a seed hopper 14 and aligned along a rotational axis X-X' of seed meter 10.
  • Finger wheel 28 and seed disc 30 are disposed within rotating vacuum chamber 20 and are positioned in closely spaced relation to one another as shown in FIG.8.
  • Finger wheel 28 includes a center hub 28a coupled by means of plural coupling bolts 34 to a center portion of seed disc 30.
  • the hub 28a and radial fingers 28b of finger wheel 28 are unitarily formed as a single metal structure as shown in FIG. 8.
  • the hub 28a and radial fingers 28b may be formed separately and coupled together in a variety of different manners including, for example, bonding, welding, adhering, fastening, or any other manner, all of which are intended to be within the intended spirit and scope of the present invention.
  • Vacuum chamber 20, finger wheel 28 and seed disc 30 are securely coupled to rotary drive spindle 42.
  • Drive spindle 42 is coupled to a source of rotary motion so as to rotationally displace vacuum chamber 20 and the combination of finger wheel 28 and seed disc 30.
  • Rotary vacuum coupling 26 serves as a sealed slip joint allowing fixed arm 22 to be attached to the rotary drive spindle 42 while remaining in fixed position within rotating vacuum chamber 20.
  • the peripheral edge portion 30b of seed disc 30 is disposed within, but does not contact, an outer, circular, peripheral edge portion 14c of the seed hopper 14.
  • Seed hopper 14 is adapted to receive seeds via an seed inlet portion 14a, with the seeds discharged from its seed discharge portion 14b as described below.
  • the inner hub 28a of finger wheel 28 is securely connected to a center portion of seed disc 30.
  • Disposed about the outer peripheral portion of seed disc 30 in a spaced manner are plural apertures 30a each adapted to receive and hold a seed as described below.
  • Each of the flexible radial fingers 28b is adapted for deflecting generally
  • Each of the flexible radial fingers 28b includes on its distal end a respective vacuum cutoff member 28d. Each of the vacuum cutoff members 28d is aligned with a respective seed receiving aperture 30a in seed disc 30. Each of the flexible radial fingers 28b further includes a cam follower wing 28c on an intermediate portion of the finger between its proximal and distal ends.
  • the low friction seed meter 10 operates in the following manner.
  • a vacuum is created within the closed structure formed by the rotating vacuum chamber 20 and seed disc 30.
  • a vacuum seal is provided between the outer periphery of seed disc 30 and the peripheral edge 20b of the rotating vacuum chamber 20.
  • the vacuum chamber 20, finger wheel 28 and seed disc 30 are coupled to and rotated by means of the rotating drive spindle 42.
  • Seeds disposed within seed hopper 14 are drawn by vacuum to a position over each of the peripheral apertures 30a within the seed disc 30. With seeds disposed over each of the peripheral apertures 30a on the surface of the seed disc 30 which is visible in FIG. 1, the seeds are displaced clockwise in the direction of arrow 60 about the axis of rotation X-X'.
  • FIG. 5 which is a sectional view taken along site line 5-5 in FIG. 7, adjacent peripheral portions of finger wheel 28 and seed disc 30 are disposed in closely spaced relation between seed hopper 14 and rotating vacuum chamber 20.
  • Outer cover 16 is shown disposed outward from and about the rotating vacuum chamber 20.
  • the low pressure side 36 of the combination of finger wheel 28 and seed disc 30 is disposed above this combination as shown in FIG. 5, while the high pressure side 38 (at atmospheric pressure) is shown in the figure as disposed below the combination of the finger wheel and seed disc.
  • the arrows in FIG. 5 illustrate the direction of air flow as upward in the figure into the rotary vacuum chamber 20 to the low pressure side 36 of the finger wheel-seed disc combination.
  • each flexible radial finger 28b will become positioned adjacent to and be engaged in a sequential manner by the cam follower 22b (see FIG. 6) disposed on the distal end of fixed arm 22.
  • Cam follower 22b sequentially engages the cam follower wing 28c of each of the flexible radial fingers 28b during rotational displacement of the finger wheel-seed disc combination.
  • cam follower 22b disposed on the distal end of fixed arm 22 is such that it simultaneously engages plural cam follower wings 28c on adjacent radial fingers 28b during rotation of the seed disc 30.
  • cam follower 22b includes four spaced roller bearings aligned along the direction of travel of the cam follower, with each roller bearing engaging a respective radial finger 28b so as to sequentially release the seeds disposed in the covered apertures.
  • the spacing between adjacent rollers of cam follower 22b is such that four adjacent seed-bearing apertures are simultaneously covered and each aperture remains covered long enough to ensure complete release of the seed from the seed disc 30.
  • the location within seed hopper 14 of the release of seeds from the rotating seed disc 30 may be precisely adjusted by rotation of the fixed arm 22 about the seed meter's axis of rotation X-X'.
  • the release of seeds from the seed disc 30 may be advanced or retarded by selective rotation of fixed arm 22.
  • Aperture clearing member 28e Attached to and extending outward from the vacuum cutoff member 28d on the distal end of each of the flexible radial fingers 28b is an aperture clearing member 28e as shown in FIGS. 5 and 6.
  • Aperture clearing member 28e which preferably is in the form of a thin wire, extends into a peripheral aperture 30a of seed disc 30 after the cutoff of vacuum and the release of seed 44a.
  • Aperture clearing member 28e functions to clear, or discharge from, the aperture 30a debris to facilitate adherence of another seed following application of vacuum again through the aperture.
  • the lower portion of aperture 38a is enlarged to facilitate receipt and positioning of a seed 44a on the surface of the seed disc and over the aperture 30a therein. Also as shown in FIG.
  • spacer 52 there is a disc-shaped spacer 52 disposed between seed disc 30 and the finger wheel's hub 28a and adjacent an inner end of each of the flexible radial fingers 28b. Spacer 52 ensures proper spacing between the vacuum cutoff members 28d on the distal end of each of the flexible radial fingers 28b and the adjacent surface of the seed disc 30 to allow for application of vacuum to each of the apertures to ensure secure attachment of the seeds to the seed disc.

Abstract

La présente invention a trait à un doseur de graines qui inclut la combinaison d'un logement de dépression et d'un disque de graines couplés ensemble de façon hermétique en vue de former une chambre de dépression. Un disque soleil généralement plat doté de plusieurs doigts élastiques s'étendant radialement est disposé à l'intérieur de la chambre de dépression. Un bras fixe est également disposé dans la chambre de dépression. Une trémie des semences est disposée adjacente au disque de graines afin de fournir des graines à une surface extérieure du disque de graines, les graines collant aux multiples ouvertures espacées qui se trouvent sur la périphérie du disque de graines lorsqu'une dépression est exercée sur la surface intérieure du disque. Une broche de commande rotative fait tourner la combinaison du logement de dépression, du disque de graines et lu disque soleil, chaque doigt élastique étant déformé de façon séquentielle par le bras fixe de manière à mettre en prise de façon séquentielle chaque ouverture du disque, ce qui permet d'interrompre la communication de dépression avec chaque ouverture, afin de libérer de façon séquentielle les graines.
PCT/US2011/029399 2010-03-22 2011-03-22 Doseur de graines à coefficient de frottement réduit WO2011119590A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US31623910P 2010-03-22 2010-03-22
US201013363510A 2010-03-22 2010-03-22
US13/053,635 2010-03-22
US61/316,239 2010-03-22

Publications (1)

Publication Number Publication Date
WO2011119590A1 true WO2011119590A1 (fr) 2011-09-29

Family

ID=44673573

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2011/029399 WO2011119590A1 (fr) 2010-03-22 2011-03-22 Doseur de graines à coefficient de frottement réduit

Country Status (1)

Country Link
WO (1) WO2011119590A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102487636A (zh) * 2011-12-13 2012-06-13 东北农业大学 摩擦型立式圆盘排种器
CN106769581A (zh) * 2017-01-04 2017-05-31 西华大学 一种多功能农机具摩擦磨损试验装置
CN108811550A (zh) * 2018-06-22 2018-11-16 湖北工业大学 一种多功能玉米播种机
CN109644631A (zh) * 2019-01-23 2019-04-19 华南农业大学 一种盘室一体化的气力式水稻排种器
CN110073775A (zh) * 2019-05-29 2019-08-02 吉林大学 双孔气吸式大豆玉米通用节能排种器

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5392707A (en) * 1993-04-22 1995-02-28 Romans; William W. Seed metering device
US5740747A (en) * 1996-08-20 1998-04-21 Case Corporation Vacuum seed metering assembly
US6718892B1 (en) * 2001-07-20 2004-04-13 Lyn A. Rosenboom Seed meter
US20050204972A1 (en) * 2003-12-29 2005-09-22 Kinze Manufacturing, Inc. (Iowa Corporation) Air seed meter
US7451713B2 (en) * 2007-04-13 2008-11-18 Deere & Company Seed disk for a seed meter

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5392707A (en) * 1993-04-22 1995-02-28 Romans; William W. Seed metering device
US5740747A (en) * 1996-08-20 1998-04-21 Case Corporation Vacuum seed metering assembly
US6718892B1 (en) * 2001-07-20 2004-04-13 Lyn A. Rosenboom Seed meter
US20050204972A1 (en) * 2003-12-29 2005-09-22 Kinze Manufacturing, Inc. (Iowa Corporation) Air seed meter
US7451713B2 (en) * 2007-04-13 2008-11-18 Deere & Company Seed disk for a seed meter

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102487636A (zh) * 2011-12-13 2012-06-13 东北农业大学 摩擦型立式圆盘排种器
CN106769581A (zh) * 2017-01-04 2017-05-31 西华大学 一种多功能农机具摩擦磨损试验装置
CN106769581B (zh) * 2017-01-04 2023-06-16 西华大学 一种多功能农机具摩擦磨损试验装置
CN108811550A (zh) * 2018-06-22 2018-11-16 湖北工业大学 一种多功能玉米播种机
CN109644631A (zh) * 2019-01-23 2019-04-19 华南农业大学 一种盘室一体化的气力式水稻排种器
CN110073775A (zh) * 2019-05-29 2019-08-02 吉林大学 双孔气吸式大豆玉米通用节能排种器
CN110073775B (zh) * 2019-05-29 2021-09-07 吉林大学 双孔气吸式大豆玉米通用节能排种器

Similar Documents

Publication Publication Date Title
US8166896B2 (en) Low friction seed meter
US7448334B2 (en) Flat type seed meter disk with axially offset surface
WO2011119590A1 (fr) Doseur de graines à coefficient de frottement réduit
EP2901837B1 (fr) Système de livraison de semences
AU2008202948B2 (en) Seed meter with flexible seed disc
US20070125284A1 (en) Flat type seed meter disk with protruded pick up orifices
US8418634B2 (en) Vacuum seed meter
US11350559B2 (en) Seed meter assembly with seed loader
EP2901838B1 (fr) Système de livraison de semences et unité de plantation équipée de celui-ci
CN106068826B (zh) 二次辅助吸种自扰动排种盘
CN101283646A (zh) 用于种子计量器的种子圆盘
US20020043200A1 (en) Seed planter
US4070974A (en) Disc trench filler for a no-till planter
US7228807B1 (en) Device for improving the spacing between seeds planted by a John Deere vacuum planter
CA2880320C (fr) Disque de semences servant a planter du canola au moyen d'une planteuse doseuse a vide
US8733258B2 (en) Seed flap for seed meter
US6718892B1 (en) Seed meter
RU2290777C2 (ru) Магнитный высевающий аппарат
US20200253109A1 (en) Seed metering disc
CN205694205U (zh) 二次辅助吸种自扰动排种盘
TW202025901A (zh) 附掛式雜糧播種裝置
RU2723499C1 (ru) Пневматический высевающий аппарат избыточного давления
RU2728425C1 (ru) Пневматический высевающий аппарат
RU2711212C1 (ru) Универсальный пневматический высевающий аппарат
RU2600129C1 (ru) Пневматический высевающий аппарат

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 11760057

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 11760057

Country of ref document: EP

Kind code of ref document: A1