WO2006110103A1 - Device at a sowing-machine - Google Patents

Device at a sowing-machine Download PDF

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Publication number
WO2006110103A1
WO2006110103A1 PCT/SE2006/050070 SE2006050070W WO2006110103A1 WO 2006110103 A1 WO2006110103 A1 WO 2006110103A1 SE 2006050070 W SE2006050070 W SE 2006050070W WO 2006110103 A1 WO2006110103 A1 WO 2006110103A1
Authority
WO
WIPO (PCT)
Prior art keywords
carrying arm
disc
discs
frame
carrying
Prior art date
Application number
PCT/SE2006/050070
Other languages
French (fr)
Inventor
Jörgen FRANSSON
Johan Mattsson
Original Assignee
Väderstad-Verken Aktiebolag
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 Väderstad-Verken Aktiebolag filed Critical Väderstad-Verken Aktiebolag
Priority to DE112006000927T priority Critical patent/DE112006000927T5/en
Publication of WO2006110103A1 publication Critical patent/WO2006110103A1/en

Links

Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01C—PLANTING; SOWING; FERTILISING
    • A01C5/00—Making or covering furrows or holes for sowing, planting or manuring
    • A01C5/06—Machines for making or covering drills or furrows for sowing or planting
    • A01C5/062—Devices for making drills or furrows
    • A01C5/064—Devices for making drills or furrows with rotating tools

Definitions

  • the invention refers to a device at a seed drill according to the preamble of claim 1.
  • the sowing aggregate usually comprises seed furrow creating means and a seed nozzle with a following packer wheel.
  • the seed furrow creating means comprises a so-called V-disc. These comprise two discs arranged with the rotation axis angled slightly relative to the normal direction to the driving direction of the seed drill. The discs are angled in different directions, providing a V-form that creates the seed furrow.
  • the seed nozzle is usually arranged between the discs.
  • the discs are arranged so that they abut each other at a point along the periphery. This point is suitably selected to lie near the place at which the discs first come into contact with the soil for creation of the seed furrow.
  • the discs are gradually worn down, which means that the contact between them ceases after some time of work. This leads to impaired function of the discs, with impaired sowing results as a consequence.
  • a known way to solve this is to arrange at least one disc axially displaceable through adding or removing one or more spacer washers and thereby producing a new position where the discs again come into contact with each other after a certain degree of wear.
  • this method is relatively time consuming and labour intensive.
  • the aim of the invention is to achieve a device at seed drill with V-disc aggregates where the abovementioned problem is avoided and that give good work results regardless of disc wear. It is also desirable to achieve a device that is wear-resistant and easy to use for the farmer with a low adjustment requirement.
  • Claim 3 describes a preferred embodiment where the first carrying arm is rigidly attached at the frame. According to this embodiment therefore only one of the carrying arms is moveable. Particularly together with embodiments according to Claims 4 and 5 which describe advantageous embodiments of the spring member simple, cheap and functionally reliable devices are made possible.
  • Claim 6 describes an alternative embodiment with the carrying arms designed as elastic springing arms with the aim of influencing the discs towards each other. According to this alternative embodiment the carrying arms therefore comprise the spring element which greatly reduces the parts requirement.
  • Claim 7 describes an embodiment where both the resilient carrying arms are rigidly attached at the frame.
  • Figure 2 shows a partial view of a sowing aggregate viewed at an angle from the side.
  • Figure 3 shows a section through the carrying arms of the seed discs.
  • Figure 4a shows a section through the carrying arms of the seed discs for an alternative embodiment where the discs are unworn.
  • Figure 4b shows a section according to Figure 4a where the discs are worn.
  • Figure 1 shows two sowing aggregates 2 each comprising a respective frame 4 moveably journalled at the main chassis of the seed drill (not shown) at two fastenings 6 and a respective link arm arrangement 8.
  • the fastenings 6 are mounted at respective cross beams not shown here.
  • the seed drill is provided with a plurality of similar sowing aggregates.
  • the sowing aggregate 2 comprises a first and a second seed disc 10, 12, hereafter referred to as discs, arranged as so-called V-discs. Behind the discs 10, 12 viewed in the working direction of the seed drill a respective packer wheel 14 is arranged. Between the discs is arranged a seed nozzle 15 (see Figure 2) connected to a not shown seed container on the seed drill via seed hoses and a partly shown seed tube 16.
  • the above-described sowing aggregate is in all essentials known.
  • the first disc 10 is turnably journalled at a first carrying arm 20 at bearings 24.
  • the second disc 12 is turnably journalled at a second carrying arm 22 at bearings 26.
  • the discs 10, 12 abut each other at a contact point 13.
  • the first carrying arm 20 is fixed at the frame 4 while the second carrying arm 22 is turnably journalled in bearings at the first carrying arm 20 around an axis of rotation 28.
  • the axis of rotation 28 is comprised of a not shown journal or similar that runs through two fastening lugs 30, 31 fixed at the first carrying arm 20 and a through hole 23 through the second carrying arm 22 arranged between the fastening lugs 30, 31.
  • the second disc 12 acts with spring against the first disc 10 with the help of a spring arrangement 40.
  • the spring arrangement 40 is arranged between the second carrying arm 22 and the frame 4 with the aim forcing the second carrying arm 22 from the first carrying arm 20 at its outer end 27 from the disc bearings 26.
  • the second carrying arm 22 is influenced towards the first carrying arm 20 at its inner end 25 from the disc bearings 26 whereupon the discs are also influenced towards each other at the contact point 13.
  • the axis of rotation 28 should be arranged so that its axial extension is essentially parallel to the respective planes of rotation of both discs 10, 12 so that the contact point 13 should not be perceptibly moved along the periphery of the discs after wear. It should also be arranged between the discs 10, 12 at the radially opposite side of the bearings 24, 26 relative to the contact point 13 with the aim of achieving good function and efficient use of space.
  • the form and function of the spring arrangement 40 are best represented in Figure 3. It comprises a spring member 42 in the form of a compression spring that at one end abuts a first abutment surface 44 on the second carrying arm 22 and at its other end abuts a second abutment surface 48 at the head 47 of a screw 46.
  • the spring 42 is here a coiled spring that surrounds the screw 46.
  • the screw head 47 is arranged in a first hole or recess 41 in the frame 4.
  • the screw 46 and the spring 42 run through a hole 21 in the first carrying arm 20 while the screw 46 also runs through a hole 29 in the second carrying arm 22 and a second hole 43 through the frame 4.
  • a plate 50 is rigidly arranged.
  • a hexagonal hole 52 is excised in the plate 50.
  • a nut 54 is adapted to lock the screw 46 against rotation relative to the frame 4 through shape compatibility with the hexagonal hole 52.
  • the spring 42 is thus tightly fastened between the frame 4 at the plate 50 and the outer end 27 of the second carrying arm 22 at the first abutment surface 44.
  • the tension of the spring 42 is also possible to set the tension of the spring 42 by loosening or tightening the nut 54 with the leverage of a spanner at the screw head 47.
  • Figures 4a and 4b show an alternative embodiment where the first disc 10 is turnably journalled at a first carrying arm 120 at bearings 124.
  • the second disc 12 is turnably journalled at a second carrying arm 122 at bearings 126.
  • the discs 10, 12 abut each other at a contact point 13.
  • the carrying arms 120, 122 are comprised of elastic resilient anus with the arm of influencing the discs 10, 12 towards each other.
  • the carrying arms 120, 122 are rigidly fastened at the frame but pretensioned to be influenced towards each other at the areas near the bearings 124, 126.
  • the invention can be varied in a plurality of ways within the framework of the claims. For example one can allow at least one carrying arm to be journalled in bearings at the frame. Furthermore, the spring member can be formed and fastened in a multitude of different ways, for example directly between the two carrying arms and possibly as an extension spring between the arms on the other side of the axis of rotation between them.

Abstract

Device at a seed drill comprising at least one sowing aggregate (2), which sowing aggregate (2) comprises a frame (4) and two seed furrow creating discs (10, 12) arranged angled relative to each other in a V-shape, which discs (10, 12) are connected to the frame (4). At least one of the discs (12) is acting with spring force against the other disc (10).

Description

DEVICE AT A SOWING-MACHINE
The invention refers to a device at a seed drill according to the preamble of claim 1.
BACKGROUND OF THE INVENTION
Today there occur on the market seed drills provided with a number of sowing aggregates arranged at the rear end of the machine. The sowing aggregate usually comprises seed furrow creating means and a seed nozzle with a following packer wheel. In many cases, the seed furrow creating means comprises a so-called V-disc. These comprise two discs arranged with the rotation axis angled slightly relative to the normal direction to the driving direction of the seed drill. The discs are angled in different directions, providing a V-form that creates the seed furrow. The seed nozzle is usually arranged between the discs.
The discs are arranged so that they abut each other at a point along the periphery. This point is suitably selected to lie near the place at which the discs first come into contact with the soil for creation of the seed furrow. However, the discs are gradually worn down, which means that the contact between them ceases after some time of work. This leads to impaired function of the discs, with impaired sowing results as a consequence. A known way to solve this is to arrange at least one disc axially displaceable through adding or removing one or more spacer washers and thereby producing a new position where the discs again come into contact with each other after a certain degree of wear. However, this method is relatively time consuming and labour intensive.
AIMS OF THE INVENTION
The aim of the invention is to achieve a device at seed drill with V-disc aggregates where the abovementioned problem is avoided and that give good work results regardless of disc wear. It is also desirable to achieve a device that is wear-resistant and easy to use for the farmer with a low adjustment requirement.
SUMMARY OF THE INVENTION
The above-mentioned aim of the invention is solved according to Claim 1 in that at least one disc is arranged to act with spring force against the other disc with the first disc turnably journalled at a first carrying arm and the second disc turnably journalled at a second carrying arm. As the discs become worn, their peripheries thereby still come to abut at a point with the help of the spring force. Full function is thereby maintained even with worn discs without the farmer needing to undertake any adjustment measures.
By, according to Claim 2, arranging the second carrying arm turnably journalled at the frame or the first carrying arm and connected with the frame or the first carrying arm with a spring member a preferred embodiment is obtained that in a simple and robust way provides the spring force and the relative movement between the discs.
Claim 3 describes a preferred embodiment where the first carrying arm is rigidly attached at the frame. According to this embodiment therefore only one of the carrying arms is moveable. Particularly together with embodiments according to Claims 4 and 5 which describe advantageous embodiments of the spring member simple, cheap and functionally reliable devices are made possible.
Furthermore Claim 6 describes an alternative embodiment with the carrying arms designed as elastic springing arms with the aim of influencing the discs towards each other. According to this alternative embodiment the carrying arms therefore comprise the spring element which greatly reduces the parts requirement.
Finally Claim 7 describes an embodiment where both the resilient carrying arms are rigidly attached at the frame.
Further characteristics and advantages of the invention are described more closely below with the help of preferred embodiments with reference to the attached drawings.
DRAWING SUMMARY Figure 1 shows two sowing aggregates.
Figure 2 shows a partial view of a sowing aggregate viewed at an angle from the side. Figure 3 shows a section through the carrying arms of the seed discs.
Figure 4a shows a section through the carrying arms of the seed discs for an alternative embodiment where the discs are unworn. Figure 4b shows a section according to Figure 4a where the discs are worn. DESCRIPTION OF THE INVENTION
Figure 1 shows two sowing aggregates 2 each comprising a respective frame 4 moveably journalled at the main chassis of the seed drill (not shown) at two fastenings 6 and a respective link arm arrangement 8. The fastenings 6 are mounted at respective cross beams not shown here. The seed drill is provided with a plurality of similar sowing aggregates.
The sowing aggregate 2 comprises a first and a second seed disc 10, 12, hereafter referred to as discs, arranged as so-called V-discs. Behind the discs 10, 12 viewed in the working direction of the seed drill a respective packer wheel 14 is arranged. Between the discs is arranged a seed nozzle 15 (see Figure 2) connected to a not shown seed container on the seed drill via seed hoses and a partly shown seed tube 16. The above-described sowing aggregate is in all essentials known.
The arrangement according to the invention is described now with reference to Figures 2 and 3. Certain details have been omitted from these drawings with the aim of clarifying the construction in the best way possible and in Figure 3 only the carrying arms 20, 22 are cross-sectional marked for the sake of clarity.
The first disc 10 is turnably journalled at a first carrying arm 20 at bearings 24. The second disc 12 is turnably journalled at a second carrying arm 22 at bearings 26. The discs 10, 12 abut each other at a contact point 13. The first carrying arm 20 is fixed at the frame 4 while the second carrying arm 22 is turnably journalled in bearings at the first carrying arm 20 around an axis of rotation 28. The axis of rotation 28 is comprised of a not shown journal or similar that runs through two fastening lugs 30, 31 fixed at the first carrying arm 20 and a through hole 23 through the second carrying arm 22 arranged between the fastening lugs 30, 31.
The second disc 12 acts with spring against the first disc 10 with the help of a spring arrangement 40. The spring arrangement 40 is arranged between the second carrying arm 22 and the frame 4 with the aim forcing the second carrying arm 22 from the first carrying arm 20 at its outer end 27 from the disc bearings 26. Hereby the second carrying arm 22 is influenced towards the first carrying arm 20 at its inner end 25 from the disc bearings 26 whereupon the discs are also influenced towards each other at the contact point 13. The axis of rotation 28 should be arranged so that its axial extension is essentially parallel to the respective planes of rotation of both discs 10, 12 so that the contact point 13 should not be perceptibly moved along the periphery of the discs after wear. It should also be arranged between the discs 10, 12 at the radially opposite side of the bearings 24, 26 relative to the contact point 13 with the aim of achieving good function and efficient use of space.
The form and function of the spring arrangement 40 are best represented in Figure 3. It comprises a spring member 42 in the form of a compression spring that at one end abuts a first abutment surface 44 on the second carrying arm 22 and at its other end abuts a second abutment surface 48 at the head 47 of a screw 46. The spring 42 is here a coiled spring that surrounds the screw 46. The screw head 47 is arranged in a first hole or recess 41 in the frame 4. The screw 46 and the spring 42 run through a hole 21 in the first carrying arm 20 while the screw 46 also runs through a hole 29 in the second carrying arm 22 and a second hole 43 through the frame 4. At the frame 4 a plate 50 is rigidly arranged. A hexagonal hole 52 is excised in the plate 50. At the end of the screw 46 a nut 54 is adapted to lock the screw 46 against rotation relative to the frame 4 through shape compatibility with the hexagonal hole 52. Hereby the spring 42 is thus tightly fastened between the frame 4 at the plate 50 and the outer end 27 of the second carrying arm 22 at the first abutment surface 44. Through the arrangement it is also possible to set the tension of the spring 42 by loosening or tightening the nut 54 with the leverage of a spanner at the screw head 47.
Figures 4a and 4b show an alternative embodiment where the first disc 10 is turnably journalled at a first carrying arm 120 at bearings 124. The second disc 12 is turnably journalled at a second carrying arm 122 at bearings 126. The discs 10, 12 abut each other at a contact point 13.
According to this embodiment the carrying arms 120, 122 are comprised of elastic resilient anus with the arm of influencing the discs 10, 12 towards each other. The carrying arms 120, 122 are rigidly fastened at the frame but pretensioned to be influenced towards each other at the areas near the bearings 124, 126.
This means that a contact point 13 between the discs 10, 12 is maintained even when these are worn from their unworn form in Figure 4a to their worn form in Figure 2b through the angle α between the discs increasing with increasing wear. Corresponding change also occurs at the embodiments according to Figures 1-3.
The invention can be varied in a plurality of ways within the framework of the claims. For example one can allow at least one carrying arm to be journalled in bearings at the frame. Furthermore, the spring member can be formed and fastened in a multitude of different ways, for example directly between the two carrying arms and possibly as an extension spring between the arms on the other side of the axis of rotation between them.
However, the shown spring formation according to Figures 1-3 is preferred since it allows a long spring and thereby linear characteristics. It is also functionally reliable and robust and easily adjustable.

Claims

1. Device at a seed drill comprising at least one sowing aggregate (2), which sowing aggregate (2) comprises a frame (4), a first and a second seed furrow creating disc (10, 12) arranged angled relative to each other in a V-shape, which discs (10, 12) are connected to the frame (4), where at least one disc (10, 12) is acting with spring against the other disc (10, 12), characterised in that the first disc (10) is turnably journalled at a first carrying arm (20) and that the second disc (12) is turnably journalled at a second carrying arm (22).
2. Device according to Claim 1, characterised in that the second carrying arm (22) is turnably journalled at the frame (4) or the first carrying arm (20) and connected with the frame (4) or the first carrying arm (20) by means of a spring member (42).
3. Device according to Claim 2, characterised in that the first carrying arm (20) is rigidly fastened at the frame (4).
4. Device according to anyone of Claims 2 or 3, characterised in that the second carrying arm (22) is turnably journalled at the first carrying arm (20) and that the spring member (42) connects the second carrying arm (22) and the frame (4).
5. Device according to any one of Claims 2-4, characterised in that the spring member (42) is comprised of a compression spring, preferably in the form of a coiled spring.
6. Device according to Claim 1, characterised in that the first disc (10) is turnably journalled at a first carrying arm (120) and that the second disc (12) is turnably journalled at a second carrying arm (122), which carrying arms are comprised of elastic resilient arms with the aim of influencing the discs (10, 12) towards each other.
7. Device according to Claim 6, characterised in that the carrying arms (120, 122) are rigidly fastened at the frame (4).
PCT/SE2006/050070 2005-04-13 2006-04-11 Device at a sowing-machine WO2006110103A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE112006000927T DE112006000927T5 (en) 2005-04-13 2006-04-11 Sämaschineneinrichtung

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE0500838A SE528913C2 (en) 2005-04-13 2005-04-13 Seed drill device
SE0500838-8 2005-04-13

Publications (1)

Publication Number Publication Date
WO2006110103A1 true WO2006110103A1 (en) 2006-10-19

Family

ID=37087303

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE2006/050070 WO2006110103A1 (en) 2005-04-13 2006-04-11 Device at a sowing-machine

Country Status (3)

Country Link
DE (1) DE112006000927T5 (en)
SE (1) SE528913C2 (en)
WO (1) WO2006110103A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202007015639U1 (en) 2007-11-09 2009-03-26 Alois Pöttinger Maschinenfabrik Gmbh agricultural machinery
WO2009102277A1 (en) * 2008-02-15 2009-08-20 Väderstad-Verken Aktiebolag Agricultural machine with a double-tine
DE202011104918U1 (en) 2011-08-24 2012-11-26 Alois Pöttinger Maschinenfabrik Gmbh Agricultural tillage implement

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2732685B1 (en) 2012-11-19 2016-06-01 Horsch Maschinen GmbH Double disc share of an agricultural machine, in particular a sowing machine

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1095798A (en) * 1911-11-03 1914-05-05 Monitor Drill Co Disk attachment.
US1286268A (en) * 1918-01-31 1918-12-03 William A Fifield Roller attachment for grain-drills.
US3507233A (en) * 1965-09-10 1970-04-21 Massey Ferguson Services Nv Seed drill
FR2413864A1 (en) * 1978-01-06 1979-08-03 Huard Ucf Disc assembly for seeder - consists of inclined pair of discs rotatable on respective arms which are pivoted about common horizontal axis

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1095798A (en) * 1911-11-03 1914-05-05 Monitor Drill Co Disk attachment.
US1286268A (en) * 1918-01-31 1918-12-03 William A Fifield Roller attachment for grain-drills.
US3507233A (en) * 1965-09-10 1970-04-21 Massey Ferguson Services Nv Seed drill
FR2413864A1 (en) * 1978-01-06 1979-08-03 Huard Ucf Disc assembly for seeder - consists of inclined pair of discs rotatable on respective arms which are pivoted about common horizontal axis

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202007015639U1 (en) 2007-11-09 2009-03-26 Alois Pöttinger Maschinenfabrik Gmbh agricultural machinery
DE102008045635A1 (en) 2007-11-09 2009-05-28 Alois Pöttinger Maschinenfabrik Gmbh Agricultural machine e.g. sowing machine, for leveling ground for good seeds coverage, has shovel finger weeder retainer including angle adjusting device for adjusting inclination angle of tooth-shaped finger weeder element
DE102008045635B4 (en) 2007-11-09 2019-10-02 Pöttinger Landtechnik Gmbh agricultural machinery
WO2009102277A1 (en) * 2008-02-15 2009-08-20 Väderstad-Verken Aktiebolag Agricultural machine with a double-tine
DE202011104918U1 (en) 2011-08-24 2012-11-26 Alois Pöttinger Maschinenfabrik Gmbh Agricultural tillage implement
DE102012014102A1 (en) 2011-08-24 2013-02-28 Alois Pöttinger Maschinenfabrik Ges.m.b.H. Agricultural soil cultivation device has coulter disc, which is mounted on coulter disk holder in rotary manner, where coulter disk holder has axle stub, which is mounted at axle support part of coulter disk holder in rotary manner
FR2979178A1 (en) * 2011-08-24 2013-03-01 Poettinger Alois Maschf AGRICULTURAL SOIL TILLING APPARATUS, IN PARTICULAR A SEEDER EQUIPPED WITH DISCOIDAL SOCKS OF SOWING
DE102012014102B4 (en) 2011-08-24 2023-06-29 Pöttinger Landtechnik Gmbh Agricultural tillage implement

Also Published As

Publication number Publication date
SE528913C2 (en) 2007-03-13
SE0500838L (en) 2006-10-14
DE112006000927T5 (en) 2008-02-28

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