WO1992012619A1 - Dispositif doseur pour semoir - Google Patents

Dispositif doseur pour semoir Download PDF

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Publication number
WO1992012619A1
WO1992012619A1 PCT/DK1992/000015 DK9200015W WO9212619A1 WO 1992012619 A1 WO1992012619 A1 WO 1992012619A1 DK 9200015 W DK9200015 W DK 9200015W WO 9212619 A1 WO9212619 A1 WO 9212619A1
Authority
WO
WIPO (PCT)
Prior art keywords
compartment
wheels
granulate
metering device
metering
Prior art date
Application number
PCT/DK1992/000015
Other languages
English (en)
Inventor
Finn Ulrik Hansen Jensen
Asger Schjellerup Olsen
Mathias Andersen
Original Assignee
Kongskilde Maskinfabrik A/S
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 Kongskilde Maskinfabrik A/S filed Critical Kongskilde Maskinfabrik A/S
Publication of WO1992012619A1 publication Critical patent/WO1992012619A1/fr

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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
    • A01C7/123—Housings for feed rollers or wheels
    • A01C7/125—Housings for feed rollers or wheels with bottom delivery of the seeds
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01C—PLANTING; SOWING; FERTILISING
    • A01C15/00—Fertiliser distributors
    • A01C15/04—Fertiliser distributors using blowers

Definitions

  • the present invention relates to a metering device for a sowing machine for metering granular material, particularly seed grain, comprising an elongate, funnel- shaped granulate compartment, bottom flaps closing the granulate compartment at the bottom, and which at one end are pivotally mounted on a common shaft longitudinally positioned in relation to the granulate chamber and at the other end form a seed slot together with a respective metering wheel, said metering wheels being mounted on a common shaft longitudinally positioned in relation to the granulate compartment and each adapted to meter granular material to an outlet from the metering device.
  • a metering device is known for instance from FR 2,593,348-A3 and DK-C-33,401.
  • sowing machines with metering devices of the above kind are available on the market. It is in all cases a question of sowing machines, in which the metering device is an integral part of the machine, and where the machine is a bigger unit with own wheels and a considerable width, which is only limited on account of the law requirements for road driving.
  • sowing machine will be used for sowing many different kinds of crops and for the spreading of fertilizers.
  • different demands are made on the metering wheels, as the size of the granulate varies very much, the size of peas being fairly big, the four sorts of cereals being middlesized, whereas for instance oilseed rape and mustard seed are very small.
  • the same metering wheel cannot be used for t.ie sowing of all these crops.
  • metering wheels in the shape of cam wheels divided into several parts with areas suited for sowing big seeds and areas suited for sowing small seeds, and, according requirements, only to run some of these areas.
  • so-called sowing fingers which cover a part of a cam wheel, thus making it more suited for the sowing of smaller seeds.
  • a metering device in which metering wheels are placed with intervals on a long shaft outside the device, the shaft with the metering wheels being interchangeable for adaptation to the seed grains in question. Under the metering wheels there are no adjustable bottom flaps, but a fixed bottom.
  • the above sowing machines are provided with a granulate compartment in the shape of a fairly big housing, which is filled with seed grain at the beginning of the sowing operation.
  • a problem in connection with metering devices of the above type is the exactness of the sowing, to be understood as the amount sown per rotation of the metering wheels.
  • This sowing exactness is depending on whether the metering device is being driven uphill or downhill or straight ahead, i.e. of the mutual position of the metering wheel and the bottom flap in relation to vertical in a plane transverse to the axis of rotation of the metering wheels.
  • the load of seed in the granulate compartment influences the sowing exactness.
  • the object of the invention is to provide a metering device which meters with exactness independent of the sloping of the ground and the seed load in the granulate compartment.
  • a metering device which difers from the known devices in that it comprises a small compact housing containing the granulate compartment, an inlet thereto for granulate and an air compartment with an inlet for compressed air, the outlets from the metering device being placed in the air compartment, whereby the compressed air during operation is conveying the metered material out through the outlets, that the bottom flaps and the metering wheels, respectively, are close together, that the metering wheels are cellular wheels, the cells of which are laterally confined by radial flanges on the cellular wheels, that the cellular wheels together with their shaft can be removed from the housing as a unit, the cell size of the cellular wheels being thus adaptable to whatever granular material to be metered, and in that the bottom flaps are preset in such a way that there is a clearance between the flanges of the cellular wheels and the bottom flaps.
  • the small compact housing occasions small dimensions, which makes it possible to make the shaft with the cellular wheels an easily removable unit. This makes it possible, without any problems, to exchange the cellular wheels in such a way that the size of the cells always corresponds to the size of the material to be metered.
  • a suitable cell size and a minimum distance between the flanges of the cell wheels and the bottom flaps ensures that only material conveyed to a cell is metered. Thereby an exact metering is attained indenpendent of the sloping of the ground.
  • the importance of the grain load is reduced. Besides, the grain load is under all circumstances small on account of the small dimensions of the housing.
  • the housing is longitudinaly divided into a first and a second part, which are detachably assembled, the first part comprising the bottom flaps and the outlets, and the second part comprising the inlets for granulate and compressed air, respectively, and the shaft with the cellular wheels is adapted to be removed transversely to the longitudinal direction of the housing.
  • each end of the shaft with the cellular wheels is journalled in a flat element adapted to be lowered into and to fill out a recess in each of the end walls of the housing, and at least one element is provided with flanges extending over the edge of the recess and guiding the element in relation to this edge.
  • the second part comprises a curved shielding plate extending along and shielding part of the periphery of all the cellular wheels, a perforated plate forming a wall in the granulate compartment and facing the shielding plate over the whole of its length, and a guide plate in the air compartment forming together with the edge of the shielding plate facing the air compartment a first longitudinal slot and together with the outer wall of the housing a second longitudinal slot in such a way that the compressed air from the inlet is lead through the second slot towards the outlets, thereby creating a low pressure in the first slot by means of an ejector effect.
  • the metering device according to the invention should when used in a sowing machine currently be supplied with granulated material, as in the granulate compartment of the small housing there is not room for the amounts of granulated material needed to sow a whole field.
  • the supply may take place from a hopper by means of a conveyance system.
  • An example of such a conveyance system is given in EP-A-0 369,766.
  • a metering device with the said second part of the housing described in the latter embodiment is suited for use in connection with such a conveyance system.
  • the metering device according to the invention may, however, also be used in other connections than with the conveyance system mentioned in the said European patent application.
  • the second part of the housing comprises a perforated wall of the granular compartment, through which air may penetrate from the granular compartment to the surroundings.
  • the second part may in another embodiment comprise an intermediate compartment between the air compartment and the granulate compartment, the perforated wall constituting a partition between the granulate compartment and the intermediate compartment, which has an outlet to the surroundings.
  • pneumatic transportation of granulated material from a hopper to the metering device may be used, the conveyance of the metered material through the outlets only being dependent on the compressed air entering through the inlet to the air compartment.
  • the used transport air may through the intermediate compartment and its outlet be conveyed through a hose to the ground in order to avoid inconvenience from dust.
  • the second part of the housing comprises a solid wall between the granulate compartment and the air compartment.
  • no air of significance can flow between the air compartment and the granulate compartment, for which reason this embodiment is suited for being used in a sowing machine with mechanical conveyance of the granulated material from the hopper to the metering device.
  • the additional advantage attained is that the grain load, apart from being small, is essentially constant, the exactness of the metering being thus further improved.
  • the first and the second parts are preferably held together by means of snap-buckles to facilitate the exchange of the cellular wheels.
  • some of the wheels may be blind wheels.
  • the celluar wheels are according to an embodiment of the invention each generally symmetric around a centre plane perpendicular to the rotating shaft, a peripheral row of cells being arranged at each side of this centre plane, and the cells of the two tows being displaced by the length of half a cell in relation to each other.
  • Fig. 1 is a sectional view of the metering device in a first embodiment of the invention
  • Fig. 2 is a sectional view thorugh the second part of the housing of a metering device in a second embodiment.
  • Fig. 3 is a sectional view according to Fig. 2 in a third embodiment of the invention
  • Fig. 4 is a sectional view, in which the upper part of the metering device has been cut along IVa-IVa in Fig. 1, and the bottom part has been cut along IVb-IVb apart from the cellular wheels, which for the sake of clarity have not been cut.
  • the metering device shown in Figs. 1 and 4 comprises an upper part 1 and a bottom part 2. These to parts are assembled by means of snap-buckles 30, of which only one is shown.
  • the bottom part comprises a funnel-shaped granulate compartment 4, which is at the bottom confined by a row of bottom flaps 5 mounted close together on a common shaft 6.
  • an abutment member 33 is further provided for each bottom flap 5, said abutment member rotating with the shaft 6 on account of a pointed screw 34.
  • the abutment member 33 serves as abutment, partly for a screw 35 serving as abutment for the bottom flap 5, partly for a spring 36 keeping the bottom flap 5 against its abutment.
  • the bottom flap 5 may allow the passage of for instance a stone, whereby damages may be avoided.
  • each bottom flap corresponds to a cellular wheel.
  • the cellular wheels 7 are mounted on a shaft 8 without any possibility of rotation in relation thereto, and the cellular wheels have flanges 9, which confine the outer diameter of the cellular wheels, and cells 10 between the flanges.
  • Each cellular wheel 7 is divided along its vertical centre plane, and the cells 10 at both sides of the centre plane are displaced by the length of half a cell in relation to each other, as shown in Fig. 4.
  • the bottom flaps 5 are by means of their pointed screws 34 fixedly set in relation to the flanges 9 of the cellular wheels so that a clearance is established between the flanges 9 and the ends 13 of the bottom flaps.
  • the shaft 8 of the cellular wheels has at each end a ball bearing 37, seated in a rectangular plate member 38, which is fastened between an interior, downwards circular and upwards rectangular flange member 39 and an exterior shielding member 40.
  • the rectangular plate members 38 correspond to recesses 41 in the end walls 42 of the metering device.
  • the flange elements 39 and the shielding elements 40 extend out over the edge of the plate members 38, thereby serving as guides in relation to the edges of the recesses 41.
  • the bottom part 2 further comprises an element 32 with an outlet 11 for each cellular wheel 7.
  • Each outlet 11 comprises, in the embodiment shown, a duct 46, the sidewalls 14 of which extend from somewhat above the outer end 13 of the bottom flap 5, where they follow the periphery of the cellular wheel 7, to a hose connection 12.
  • the ducts 46 are closed upwards by a curved flange 31 of the sidewall of the bottom part 2 of the metering device.
  • the upper part 1, which is fastened to the bottom part 2 by the snap-buckles 30, contains an upper section of the granulate compartment 4 and an upper section of an air compartment 15.
  • a curved shielding plate 16 shields a part of the perihery of the cellular wheels 7 and is at the edge, which is closest to the granulate chamber 4, connected with a perforated plate 17, the perforations 45 of which have such a size that air, but not granulated material to be metered, may pass.
  • the perforated plate 17 constitutes a partition wall between the granulate compartment 4 and the air compartment 15.
  • In the air compartment is a guide plate 18 guiding air from an inlet 19 to the air compartment 15 towards the outlets 11.
  • the guide plate extends throughout the whole length of the metering device so far downwards that together with the shielding plate 16 it forms a first slot 20 and together with the wall 21 of the metering device a second slot 22.
  • the upper part 1 has an inlet 23 for granulate to the granulate compartment 4.
  • the inlets 19 og 23 may, as shown schematically, be connected to connections 43 and 44, respectively.
  • the metering device described above may be used in the sowing machine disclosed in EP-A-0 369 766.
  • granulated material will during operation be conveyed by means of compressed air into the granulate compartment 4 though the inlet 23.
  • the conveying air will escape from the granulate compartment 4 through the perforated plate 17 to the air compartment 15.
  • the cellular wheels will rotate as shown by the arrow 24 and meter the granulated material from the granulate compartment 4 to the duct 46 of their respective outlets 11. Compressed air will through the inlet
  • a second embodiment of the upper part 101 which, like the embodiment according to Fig. 1, comprises the upper sections of the granulate compartment 4 and the air compartment 15, an inlet 19 to the air compartment and an inlet 23 to the granulate compartment.
  • a perforated plate 17 which constitutes a wall of the granular compartment 4 and is connected with the shielding plate 16.
  • the edge thereof close to the air compartment 15 is however in this embodiment connected with a wall plate 25, whereby an intermediate compartment 26 without connection to the air compartment 15 is created.
  • an outlet 27 for air is provided in the end wall of the device.
  • the metering device provided this embodiment of the upper part 101 may like the device according to the previously described embodiment be used in connection with a sowing machine according to EP-A-0 369 766.
  • the two air flows entering through the inlets 19 and 23, respectively, will in this embodiment not disturb one another, as the conveying air for the granulated material, after having penetrated through the perforated plate 17, passes through the intermediate compartment 26 and out through the outlet 27 of this chamber.
  • the outlet 27 may be connected to a hose, which guides the outflowing air down towards the ground in order to prevent inconvenience from dust.
  • a further embodiment of the upper part 201 is shown.
  • This embodiment is to a great extent similar to the embodiment of Fig. 2.
  • the perforated plate 17 has been replaced by a solid wall 28.
  • This embodiment is intended for use in connection with a sowing machine, in which the conveyance of granulated material from a storage hopper to the metering device is carried out by mechanical means, for instance a helical conveyor.
  • mechanical means for instance a helical conveyor.
  • there will be no transport air to be guided away form the granulated compartment 4 for which reason a perforated wall is superfluous. Therefore, there is no need either for the intermediate compartment 26, shown in Fig. 2, with the outlet 27, and due to that there is not in this embodiment an element corresponding to the wall plate 25.
  • the shaft 8 with the metering wheels 7 as well as the bearings of the shaft can be quickly and easily exchanged by opening the snap-buckles 30, after which the upper part can be lifted off. There is then free access to the shaft 8 with the cellular wheels 7, and the shaft may just be removed after the removal of the transmission elements at the ends of the shaft. Then another shaft 8 with other cellular wheels can be placed in the device in order to sow another kind of crop.
  • the fixedly set bottom flaps 5 make an adjustment in connection with the exchange of the cellular wheels 7 superfluous.

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  • Life Sciences & Earth Sciences (AREA)
  • Soil Sciences (AREA)
  • Environmental Sciences (AREA)
  • Sowing (AREA)
  • Fertilizing (AREA)

Abstract

L'invention se rapporte à un dispositif doseur qui, utilisé dans un semoir, sert à doser des substances granulaires, particulièrement des graines de semences, et comprend un compartiment à graines en forme d'entonnoir allongé (4), ainsi que des volets de fond (5) qui ferment le fond du compartiment à graines (4) et qui, à une extrémité, sont montés pivotant sur un arbre commun (6) disposé dans le sens longitudinal par rapport au compartiment à graines et qui, associés à une roue de dosage correspondante (7), forment à l'autre extrémité (13) une fente pour les graines. Ces roues de dosage (7) sont montées sur un arbre commun (9) disposé dans le sens longitudinal par rapport au compartiment à graines (8) et chacune d'elles sert à doser la substance granulaire sortant par un canal (11) du dispositif doseur. Les roues de dosage sont des roues cellulaires (7) et elles sont conçues pour être démontées du logement avec leur arbre en un seul bloc.
PCT/DK1992/000015 1991-01-22 1992-01-21 Dispositif doseur pour semoir WO1992012619A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DK10291A DK10291D0 (da) 1991-01-22 1991-01-22 Doseringsapparat for en saamaskine
DK102/91 1991-01-22

Publications (1)

Publication Number Publication Date
WO1992012619A1 true WO1992012619A1 (fr) 1992-08-06

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PCT/DK1992/000015 WO1992012619A1 (fr) 1991-01-22 1992-01-21 Dispositif doseur pour semoir

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DK (1) DK10291D0 (fr)
WO (1) WO1992012619A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997000603A1 (fr) * 1995-06-20 1997-01-09 Horsch Maschinen Gmbh Dispositif de semence avec doseur modulaire
WO1999040772A1 (fr) * 1998-02-11 1999-08-19 Hoelzl Hans Dispositif a largeur de bande de reglage importante pour repartition precise de matiere a repandre
US6598548B2 (en) 2000-09-28 2003-07-29 Noel D. Lempriere Seed metering device
WO2003077635A2 (fr) * 2002-03-15 2003-09-25 Finn Corporation Systeme d'evacuation de matieres en vrac, muni d'un dispositif d'alimentation
RU2603926C1 (ru) * 2015-06-03 2016-12-10 Федеральное государственное бюджетное образовательное учреждение высшего образования "Воронежский государственный лесотехнический университет имени Г.Ф. Морозова" Лесная сеялка крупноплодных семян

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3851604A (en) * 1971-05-18 1974-12-03 E Seifert Device for metering granular material
WO1986001369A1 (fr) * 1984-08-22 1986-03-13 Massey-Ferguson Manufacturing Limited Dispositif de dosage
WO1987003166A1 (fr) * 1985-11-25 1987-06-04 Gandy Corporation Applicateur de substances granulaires pourvu de roues de dosage interchangeables
EP0259633A2 (fr) * 1986-09-06 1988-03-16 Konrad Hendlmeier Dispositif de dosage de précision, par exemple volumétriques, de matériaux en granulés dans des épandeurs de granulés
US4779765A (en) * 1987-04-13 1988-10-25 Deere & Company Fertilizer divider for dual air system
EP0358878A2 (fr) * 1988-09-07 1990-03-21 Rabewerk GmbH + Co. Dispositif doseur pour une machine à distribuer
EP0369766A2 (fr) * 1988-11-16 1990-05-23 Kongskilde Maskinfabrik A/S Dispositif pour semer du matériau granulé

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3851604A (en) * 1971-05-18 1974-12-03 E Seifert Device for metering granular material
WO1986001369A1 (fr) * 1984-08-22 1986-03-13 Massey-Ferguson Manufacturing Limited Dispositif de dosage
WO1987003166A1 (fr) * 1985-11-25 1987-06-04 Gandy Corporation Applicateur de substances granulaires pourvu de roues de dosage interchangeables
EP0259633A2 (fr) * 1986-09-06 1988-03-16 Konrad Hendlmeier Dispositif de dosage de précision, par exemple volumétriques, de matériaux en granulés dans des épandeurs de granulés
US4779765A (en) * 1987-04-13 1988-10-25 Deere & Company Fertilizer divider for dual air system
EP0358878A2 (fr) * 1988-09-07 1990-03-21 Rabewerk GmbH + Co. Dispositif doseur pour une machine à distribuer
EP0369766A2 (fr) * 1988-11-16 1990-05-23 Kongskilde Maskinfabrik A/S Dispositif pour semer du matériau granulé

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997000603A1 (fr) * 1995-06-20 1997-01-09 Horsch Maschinen Gmbh Dispositif de semence avec doseur modulaire
AU711839B2 (en) * 1995-06-20 1999-10-21 Horsch Maschinen Gmbh Sowing apparatus with modular metering devices
US6138591A (en) * 1995-06-20 2000-10-31 Horsch Maschinen Gmbh Seeding device with a modular dosing device
WO1999040772A1 (fr) * 1998-02-11 1999-08-19 Hoelzl Hans Dispositif a largeur de bande de reglage importante pour repartition precise de matiere a repandre
US6598548B2 (en) 2000-09-28 2003-07-29 Noel D. Lempriere Seed metering device
WO2003077635A2 (fr) * 2002-03-15 2003-09-25 Finn Corporation Systeme d'evacuation de matieres en vrac, muni d'un dispositif d'alimentation
WO2003077635A3 (fr) * 2002-03-15 2003-12-18 Finn Corp Systeme d'evacuation de matieres en vrac, muni d'un dispositif d'alimentation
US7083069B2 (en) 2002-03-15 2006-08-01 Finn Corporation Bulk material discharge assembly with feeding apparatus
RU2603926C1 (ru) * 2015-06-03 2016-12-10 Федеральное государственное бюджетное образовательное учреждение высшего образования "Воронежский государственный лесотехнический университет имени Г.Ф. Морозова" Лесная сеялка крупноплодных семян

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Publication number Publication date
DK10291D0 (da) 1991-01-22

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