WO1992005687A1 - Dispositif pour epandre la balle et les glumes sortant d'une moissonneuse-batteuse - Google Patents

Dispositif pour epandre la balle et les glumes sortant d'une moissonneuse-batteuse Download PDF

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Publication number
WO1992005687A1
WO1992005687A1 PCT/SE1991/000659 SE9100659W WO9205687A1 WO 1992005687 A1 WO1992005687 A1 WO 1992005687A1 SE 9100659 W SE9100659 W SE 9100659W WO 9205687 A1 WO9205687 A1 WO 9205687A1
Authority
WO
WIPO (PCT)
Prior art keywords
chaff
air
husks
harvester
stream
Prior art date
Application number
PCT/SE1991/000659
Other languages
English (en)
Inventor
Peter Nilsson
Original Assignee
Rekordverken Sweden Ab
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 Rekordverken Sweden Ab filed Critical Rekordverken Sweden Ab
Publication of WO1992005687A1 publication Critical patent/WO1992005687A1/fr

Links

Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01D—HARVESTING; MOWING
    • A01D41/00—Combines, i.e. harvesters or mowers combined with threshing devices
    • A01D41/12—Details of combines
    • A01D41/1243—Devices for laying-out or distributing the straw

Definitions

  • a device for spreading chaff and husks from a combine harvester A device for spreading chaff and husks from a combine harvester.
  • the subject invention concerns a device for spreading chaff and husks from a combine harvester across sub- stantially the entire cutting width of the harvester, said harvester comprising a screening means to separate the chaff from the grain, as well as a device generating a discharge stream of air which is essentially rearwardly directed as seen in the direction of travel of the har- vester, said stream of air serving to direct the chaff and the husks away from the screening means to an essentially downwardly directed outlet from said means.
  • the purpose of the subject invention is to provide a device designed to spread the chaff and husks over sub ⁇ stantially the entire cutting width of the harvester, thus ensuring a continuous and even distribution across the field.
  • the arrangement must not affect the feed of unchopped straw to the chopper, nor negatively affect the separation of the chaff from the grain.
  • it also when the straw is to be deposited in the form of strands, for example, it must still be possible to spread the chaff and husks over the entire cutting width of the harvester without, however, causing spreading of the straw or inter ⁇ ference with the straw feed.
  • a deflector in the area of the screening means outlet to deflect the exiting stream of air in which the chaff and the husks are carried, towards the ground in a lateral and downwards direction with respect to the direction of advancement of the harvester, as well as to distribute and spread the chaff and husks on the ground across the cutting width
  • said deflector being in the shape of a body formed with deflecting surfaces, said surfaces extending obliquely with respect to the essentially rearwardly directed, exiting stream of air for the purpose of deflecting said stream of air laterally and downwardly, said body having a size which is so much smaller than the downwardly directed outlet of the screening means and which is so positioned with respect to the latter that the pressure drop of the exiting stream of air across the body is minimal, a gap being defined between the upper delimi- tation face of the body and an upper partition wall positioned opposite the downwardly directed outlet of the screening means, said gap allowing passage there ⁇ through
  • Fig. 1 is a schematical and partly broken lateral view of the combine harvester fitted with the device in accordance with the invention
  • Fig. 2 is a perspective view as seen obliquely from behind and below, of the part of the combine harvester in accordancae with Fig. 1 where the device in accordance with the invention is positioned,
  • Figs. 3a-c are perspective views as seen obliquely from behind of some embodiments of a deflector incorp ⁇ orated in the device in accordance with the invention
  • Figs. 4A, 5A and 6A illustrate the rear part of the harvester in accordance with Fig. 1 in schematic and partly broken views, to illustrate alternative positions of the deflector
  • Figs. 4B, 5B and 6B show views as seen in the direction of respectively arrows B, C and D in Figs. 4A, 5A and 6A.
  • the combine harvester designated generally by reference 1 in the drawing figures is of rather convent ⁇ ional configuration with the exception of the device in accordance with the invention, generally designated by reference 2. It has a pick-up reel 3 including a cutting table 4 having a width considerably exceeding that of the harvester 1 proper, for instance double that width.
  • the cut straw-feed crop 5 is transported via a transverse conveyor 6 and a longitudinal conveyor 7 up to a thresher 8, where the straw 9 is separated from the grain 10.
  • the straw 9 is furthered via an oscillating conveyor 11 up to an impact chopper 12 positioned at the rear end of the harvester as seen in the direction of travel of the latter.
  • the chopper 12 chops up ' or cuts the straw 9 into smaller pieces and a spreader, not illustrated in detail and positioned adjacent an outlet 14, spreads the chopped straw pieces 13 onto the ground, i.e. the field 15, over an area the width of which essentially corresponds to the width of the cutting table 4.
  • the grain 10 from the thresher as well as the chaff 16 and husks 17 are feed to a screening device 18 com ⁇ prising a number of screens 19 and a screening fan 20.
  • the chaff 16 and the husks 17 are separated from the heavier grain 10 when passing through the screens 19, the chaff and the husks being blown away in the direc ⁇ tion towards an essentially downwardly directed outlet 21 from the screening device 18, with the aid of the generally rearwardly directed stream of air 22 which is Generated ia ⁇ ⁇ the screening fan 20.
  • a deflector is positioned in the area of the outlet 21 of the screening device 18.
  • the purpose of the deflector is to deflect the exiting stream of air 22 carrying the chaff 16 and the husks 17 laterally and downwardly as seen in the direction of travel A, towards the ground 15, and to distribute and spread the chaff and the husks onto the ground across the entire cutting width of the harvester 1, as illustrated in Figs. 1 and 2.
  • the deflector 23 Downstream of the deflector 23 as seen in the direc ⁇ tion of flow of the exiting stream of air 22, there is provided a unit, designated generally be reference 24, which is designed to impart a further laterally extended distributing movement to the stream of air for more efficient spreading of the chaff 16 and the husks 17 over the cutting width.
  • the deflector 23 is shaped as a body 25 comprising deflecting surfaces 26 which are oblique with respect to the rearwardly directed exiting stream of air 22 so as to deflect said stream of air laterally and downwardly.
  • the spatial extent of the body 25 becomes much smaller than that of the down ⁇ wardly directed outlet 21 of the screening device 18 and the body 25 will be assume such a relative position with respect to said outlet that the pressure drop of the exiting stream of air 22 across the body 25 becomes minimal, in addition to which a gap 29 will be defined intermediate the upper delimitation face 27 of the body and an upper partition wall 28 positioned opposite the downwardly directed outlet 21 of the screening device 18, which gap 29 allows passage therethrough of part of the exiting stream of air.
  • the body 25 is in the form of a bent plate of a suitable, preferably rigid material, such as sheet metal.
  • the sheet metal element may be coated on at least its oblique surfaces 26 with a vibration- dampening and/or sound absorbing substance. Obviously, it is quite possible to manufacture the entire plate 25 from a vibration-dampening and/or sound absorbing material.
  • the plate 25 has a generally V-shaped profile whereas in accordance with the embodiment of Fig. 3b, the profile configuration is a combination of a V-shape and a U-shape and the embodiment in accordance with Fig. 3c has a U-shaped profile configuration with the legs of the U-shape tapering outwards.
  • Other profile configurations are, of course, possible, ' the condition being that the stream of air 22, carrying the chaff 16 and the husks 17, is deflected laterally and downwards. In all embodiments according to Figs.
  • the plate 25 has a cross-section which increases, preferably progressively, in the direction of travel A from its front point 30 towards the rear edge 31. As appears from Figs. 1 and 2, the plate 25 is freely suspended in the chassis of the combine harvester 1 along the upper plate edges 32, preferably in stays 33 or similar means attached to the harvester chassis.
  • the unit 24 described above, designed to impart the further laterally extended distributing motion to the exiting stream of air 22 downstream of the deflector 23 in the form of a plate 25, comprises a fan 34 which is mounted on the harvester at a level below the plate 25, cf. Figs. 1 and 2.
  • the fan 34 is a cross-flow fan having an essentially horizontal outlet 35, the width of which essentially agrees with that of the outlet 21 of the screening device 18.
  • the outlet 35 houses spreader means 36 in the form of configured guide plates serving to direct the outlet air 37 from the fan 34 towards the exiting stream of air carrying the chaff 16 and the husks 17.
  • the exiting stream of air is given the further laterally extended distribut ⁇ ing motion, ensuring that the chaff and the husks are spread onto the ground 15 across entire the cutting breadth ahead of the chopped straw 13, as seen in the direction of travel A.
  • the unit 24 above could include, instead of the cross-flow fan 34, one or several rotor- type spreaders which, like the first-mentioned spreaders, are positioned in the area below the plate 25 and which may be arranged to rotate about rotational shafts which are substantially vertical or extend obliquely with respect to the vertical.
  • the rotational spreader or spreaders is (are) hit by the stream of air 22 carrying the chaff 16 and the husks 17, said stream of air is given the above distributing motion having a further lateral extent.
  • Figs. 4-6 illustrate some other possible alterna ⁇ tive positions of the deflector 23 described in the aforegoing.
  • the deflector 23 assumes an essential vertical position in the are of the outlet 21 and it is preferably mounted on a guide plate 38 which is incorporated in the chopper 12.
  • the deflector 23 extends downwards from the outlet 21 and terminates essentialy opposite the unit 24.
  • the deflector 23 is positioned obliquely downwardly and rearwardly in said area and preferably it is mounted on a crosswise stay 39 arranged on the hood of the harvester 1. Also in this case the deflector 23 extends downwards from the outlet to the level flush with the unit 24. . Finally, in accordance with the alternative shown in Figs. 6A and 6B, the deflector 23 is mounted on the lower face of the chopper 12 in the area of the outlet 21 and level with or opposite the unit 24.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Threshing Machine Elements (AREA)
  • Outside Dividers And Delivering Mechanisms For Harvesters (AREA)

Abstract

Est décrit un dispositif pour épandre la balle (16) et les glumes (17) sortant d'une moissonneuse-batteuse sur sensiblement toute la largeur de coupe de la machine. La balle et les glumes sont transportées dans un courant d'air sortant qui est dirigé essentiellement vers l'arrière, vu dans le sens de marche (A) de la moissonneuse, depuis un moyen de criblage (18) conçu pour séparer la balle (16) du grain (10), jusqu'à une sortie (21), orientée vers le bas, dudit moyen de criblage. Dans la région de ladite sortie (21) est situé un déflecteur (23) qui dévie le courant d'air sortant (22) transportant la balle (16) et les glumes (17), dans une direction latérale et vers le bas, vue dans le sens de marche (A), en direction du sol, afin de répartir et d'épandre la balle et les glumes sur toute la largeur de coupe.
PCT/SE1991/000659 1990-10-02 1991-10-02 Dispositif pour epandre la balle et les glumes sortant d'une moissonneuse-batteuse WO1992005687A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9003121-2 1990-10-02
SE9003121A SE466880B (sv) 1990-10-02 1990-10-02 Anordning foer spridning av agnar och boss fraan en skoerdetroeska

Publications (1)

Publication Number Publication Date
WO1992005687A1 true WO1992005687A1 (fr) 1992-04-16

Family

ID=20380509

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1991/000659 WO1992005687A1 (fr) 1990-10-02 1991-10-02 Dispositif pour epandre la balle et les glumes sortant d'une moissonneuse-batteuse

Country Status (3)

Country Link
AU (1) AU8642691A (fr)
SE (1) SE466880B (fr)
WO (1) WO1992005687A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1074175A1 (fr) * 1999-08-06 2001-02-07 Deere & Company Distributeur pour le résidu des produits de récolte éjecté d'une moissonneuse-batteuse
EP1219164A1 (fr) * 2000-12-21 2002-07-03 CLAAS Selbstfahrende Erntemaschinen GmbH Procédé et dispositif pour convoyer des récoltes dans une machine agricole
US6656038B1 (en) * 1999-07-06 2003-12-02 Rekordverken Sweden Ab Combine harvester having a straw chopper and husk discharger
US6908379B2 (en) * 2003-03-07 2005-06-21 Cnh America, Llc Combine harvester
WO2014181171A1 (fr) * 2013-05-10 2014-11-13 Agco Corporation Procédé et système de sortie de mog de crible
US9801340B2 (en) * 2015-04-30 2017-10-31 Cnh Industrial America Llc Spreader arrangement for an agricultural harvester
US10321634B2 (en) 2016-03-22 2019-06-18 Agco International Gmbh Combine harvester grain cleaning system

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3542577C1 (de) * 1985-12-02 1987-02-26 Biso Bitter Gmbh & Co Kg Vorrichtung fuer Maehdrescher zum Verteilen der Spreu
US4711253A (en) * 1986-05-19 1987-12-08 Haybuster Manufacturing, Inc. Chaff blower for combines
DE3824166A1 (de) * 1988-07-16 1990-01-18 Deere & Co Europ Verteilvorrichtung fuer streugut

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3542577C1 (de) * 1985-12-02 1987-02-26 Biso Bitter Gmbh & Co Kg Vorrichtung fuer Maehdrescher zum Verteilen der Spreu
US4711253A (en) * 1986-05-19 1987-12-08 Haybuster Manufacturing, Inc. Chaff blower for combines
DE3824166A1 (de) * 1988-07-16 1990-01-18 Deere & Co Europ Verteilvorrichtung fuer streugut

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6656038B1 (en) * 1999-07-06 2003-12-02 Rekordverken Sweden Ab Combine harvester having a straw chopper and husk discharger
EP1074175A1 (fr) * 1999-08-06 2001-02-07 Deere & Company Distributeur pour le résidu des produits de récolte éjecté d'une moissonneuse-batteuse
EP1219164A1 (fr) * 2000-12-21 2002-07-03 CLAAS Selbstfahrende Erntemaschinen GmbH Procédé et dispositif pour convoyer des récoltes dans une machine agricole
US6908379B2 (en) * 2003-03-07 2005-06-21 Cnh America, Llc Combine harvester
WO2014181171A1 (fr) * 2013-05-10 2014-11-13 Agco Corporation Procédé et système de sortie de mog de crible
US9686916B2 (en) 2013-05-10 2017-06-27 Agco Corporation Cleaning shoe MOG discharge system
US9801340B2 (en) * 2015-04-30 2017-10-31 Cnh Industrial America Llc Spreader arrangement for an agricultural harvester
US10321634B2 (en) 2016-03-22 2019-06-18 Agco International Gmbh Combine harvester grain cleaning system

Also Published As

Publication number Publication date
SE466880B (sv) 1992-04-27
SE9003121A (fr) 1992-04-03
AU8642691A (en) 1992-04-28
SE9003121D0 (sv) 1990-10-02

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