CA1220965A - Flexible tine harrow for the preparation of seed beds - Google Patents
Flexible tine harrow for the preparation of seed bedsInfo
- Publication number
- CA1220965A CA1220965A CA000452576A CA452576A CA1220965A CA 1220965 A CA1220965 A CA 1220965A CA 000452576 A CA000452576 A CA 000452576A CA 452576 A CA452576 A CA 452576A CA 1220965 A CA1220965 A CA 1220965A
- Authority
- CA
- Canada
- Prior art keywords
- harrow
- frame
- frames
- main frame
- tine
- 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.)
- Expired
Links
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
- A01B73/00—Means or arrangements to facilitate transportation of agricultural machines or implements, e.g. folding frames to reduce overall width
- A01B73/02—Folding frames
- A01B73/04—Folding frames foldable about a horizontal axis
- A01B73/044—Folding frames foldable about a horizontal axis the axis being oriented in a longitudinal direction
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
- A01B23/00—Elements, tools, or details of harrows
- A01B23/04—Frames; Drawing-arrangements
- A01B23/046—Specially adapted for harrows with rotating tools
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
- A01B35/00—Other machines for working soil not specially adapted for working soil on which crops are growing
- A01B35/20—Tools; Details
- A01B35/30—Undercarriages
Abstract
ABSTRACT
In a flexible tine harrow for the preparation of seed beds and comprising a plurality of individual harrow sections, each of these sections has an intermediate frame which is supported by earth crumbling drums in front of and behind the harrow section and is towingly connected with the main frame both through a link connection at the front end of the intermediate frame and through a telescopic stay biased to exten-sion and arranged above the harrow section, the di-rections of the pull and push forces exerted through the link connection and the stay intersecting at a point approximately in the level of the shares of the harrow tines.
In a flexible tine harrow for the preparation of seed beds and comprising a plurality of individual harrow sections, each of these sections has an intermediate frame which is supported by earth crumbling drums in front of and behind the harrow section and is towingly connected with the main frame both through a link connection at the front end of the intermediate frame and through a telescopic stay biased to exten-sion and arranged above the harrow section, the di-rections of the pull and push forces exerted through the link connection and the stay intersecting at a point approximately in the level of the shares of the harrow tines.
Description
~2~ 6~ii FIELD AND BACKGROUND OF THE INVENTION
It has long been known that a careful prepara-tion of the ~ield is essential to the conditions of growth of various crops and consequently to the ob-tainable yield and, therefore, a final harrowing andsmoothing of the soil surface is frequently effected immediately before seeding for which purpose special flexible tine harrows and so-called rotacrats (crumbler drums) have been developed which should leave the soil surface as smooth as possible and without bigger clods. In this respect it is important that only a superficial layer of suitable depth is being worked by the harrow tines, and not less impor-tant is that the depth of processing is as constant as possible so as to obtain also an accurate sowing depth by the following mechanical sowing.
The purpose of the present invention is to provide an implement which in the best way ful~ils these conditions.
More particularly, the invention relates to a seed bed preparing flexible tine harrow of the type comprising a main frame to be coupled to a tractor and in w~ich a plurality of harrow sections are indi-vidually suspended, each harrow section comprising a set of harrow tines clamped in a tine frame which is adjustably suspended in an intermediate frame towingly connected with the main frame and having wheels or drums rolling on the soil surface.
Such harrows are known in which the interme-diate frame solely by its own weight and the weightof the harrow tines and their frame rests on the wheels or drums which may be adjustable in relation to the intermediate frame, the towing connection from the main frame to the intermediate frame (and possib-ly also the suspension of the tine frame therein) s being established by means of chains. Dependent onsoil conditions such a seed bed harrow can yield a satisfactory working, but in several cases variations in the resistance to the harrow tines and in the bearing capacity of the soil surface will cause the tine frame to tilt or pitch which makes it impossible to filful the requirement of a constant harrowing depth.
SUMMARY OF THE NOVEL FEATURES OF THE INVENTION
As distinct from the prior embodiment it applies to the harrow according to the invention that each intermediate frame is connected with the main frame through a front link and a rear telescopic stay biased to extension, respectively, and that the link and the stay hinged to the intermediate frame are di-rected forwards/upwards and backwards/upwards, re-spectively, under such angles that their longitudinal directions intersect approximately in the level of the shares of the harrow tines.
During operation the intermediate frame sus-pended in this particular manner will be subjected both to a pull from the link and to a push from the stay. These pull and push forces may each be broken down in a horizontal, forwardly directed component and a vertical component directed upwardly and down wardly, respectively, and by an appropriate biasing of the telescopic stay it can be ensured that the vertical components neutralize each other when the force directions intersect in the said manner. The resulting force on the set of harrow tines will then become parallel to the soil surface and will be ef-fective mainly in the same plane as the resistance that the shares of the harrow tines must overcome and, consequently, variations in this resistance will not result in a moment of force capable of provoking a tilting or pitching movement as mentioned above.
~, .
DETAILED DESCRIPTION OF THE PREFERRED ~MBODIMENT
A preferred embodiment of the flexible tine harrow according to the invention is illustrated on the drawing which is a simplified side elevational view.
The illustrated harrow comprises a main frame 1 which through a pull rod or hitch 2 can be coupled to a tractor and which at its rearmost end is provided with a transport wheel 3, illustrated in its raised, inoperative position. The implement may as well be adapted to be suspended on the tractor so that the transport wheel becomes superfluous, and the main frame 1 may in an ordinary manner be composed of a centre section and a pair of side or wing sections lS which may be folded over the main section when the implement is to be transported on public roads.
A number o~ individual harrow sections 4, e.g.
seven, of which only one is seen in the drawing, are suspended side-by-side in the main frame 1. Each of said sections comprises a set of harrow tines 5 clamped in a tine frame 6, which through a pair of ordinary height adjustin~ mechanisms 7 wi~h handles or levers 8 is suspended in an intermediate frame 9.
Both in front of and behind the harrow section 4 said intermediate frame is provided with one or more drums, for instance so-called crumblers or rotacrats 10 which determine the height of the intermediate frame 9 above the soil surface 11. Said height too may be adjustable.
To transmit the pull force from the main frame 1 to the intermediate frame 9 and thus to the harrow section 4 there are provided, on the one hand, a link connection 13 at the front end of the interme-diate frame and, on the other hand, a telescopic stay 35 14 above the harrow section 14. The link or lever 13 ~2Zl)9~5 of the link connection is hinged to a mounting plate 15 on the main frame 1 and to the intermediate frame 9, its hinge point 16 on the mounting 15 being posi-tioned ahead of its hinge point 10 on the inter-mediate frame 9. The stay 14 may appropriately beconstituted by a hydraulic cylinder biased to exten-sion, which in a manner known per se is hydraulically connected with the corresponding cylinders associated with the other harrow sections and the upper end of which is supported by a mounting plate 17 from which the stay is directed forwards/downwards to a mounting fitting 18 on the intermediate frame 9.
As illustrated in dotted lines, the longitudi-nal directions of the link 13 and the stay 14 inter-sect in a point 19 which is on level with the shares of the harrow tines 5, and the pull and push forces transmitted through the link and the stay may, there-fore, as explained above, be combined into a horizon-tal resultant in the intersection point 19.
The hydraulic series connection of the cylin-ders of the stays 14 is intended, as is the case with analogous arrangements in prior harrows, to ensure uniform working depth of the harrow tines associated with the various intermediate frames eventhough the field is not in a plane transversely to the driving direction of the harrow.
It has long been known that a careful prepara-tion of the ~ield is essential to the conditions of growth of various crops and consequently to the ob-tainable yield and, therefore, a final harrowing andsmoothing of the soil surface is frequently effected immediately before seeding for which purpose special flexible tine harrows and so-called rotacrats (crumbler drums) have been developed which should leave the soil surface as smooth as possible and without bigger clods. In this respect it is important that only a superficial layer of suitable depth is being worked by the harrow tines, and not less impor-tant is that the depth of processing is as constant as possible so as to obtain also an accurate sowing depth by the following mechanical sowing.
The purpose of the present invention is to provide an implement which in the best way ful~ils these conditions.
More particularly, the invention relates to a seed bed preparing flexible tine harrow of the type comprising a main frame to be coupled to a tractor and in w~ich a plurality of harrow sections are indi-vidually suspended, each harrow section comprising a set of harrow tines clamped in a tine frame which is adjustably suspended in an intermediate frame towingly connected with the main frame and having wheels or drums rolling on the soil surface.
Such harrows are known in which the interme-diate frame solely by its own weight and the weightof the harrow tines and their frame rests on the wheels or drums which may be adjustable in relation to the intermediate frame, the towing connection from the main frame to the intermediate frame (and possib-ly also the suspension of the tine frame therein) s being established by means of chains. Dependent onsoil conditions such a seed bed harrow can yield a satisfactory working, but in several cases variations in the resistance to the harrow tines and in the bearing capacity of the soil surface will cause the tine frame to tilt or pitch which makes it impossible to filful the requirement of a constant harrowing depth.
SUMMARY OF THE NOVEL FEATURES OF THE INVENTION
As distinct from the prior embodiment it applies to the harrow according to the invention that each intermediate frame is connected with the main frame through a front link and a rear telescopic stay biased to extension, respectively, and that the link and the stay hinged to the intermediate frame are di-rected forwards/upwards and backwards/upwards, re-spectively, under such angles that their longitudinal directions intersect approximately in the level of the shares of the harrow tines.
During operation the intermediate frame sus-pended in this particular manner will be subjected both to a pull from the link and to a push from the stay. These pull and push forces may each be broken down in a horizontal, forwardly directed component and a vertical component directed upwardly and down wardly, respectively, and by an appropriate biasing of the telescopic stay it can be ensured that the vertical components neutralize each other when the force directions intersect in the said manner. The resulting force on the set of harrow tines will then become parallel to the soil surface and will be ef-fective mainly in the same plane as the resistance that the shares of the harrow tines must overcome and, consequently, variations in this resistance will not result in a moment of force capable of provoking a tilting or pitching movement as mentioned above.
~, .
DETAILED DESCRIPTION OF THE PREFERRED ~MBODIMENT
A preferred embodiment of the flexible tine harrow according to the invention is illustrated on the drawing which is a simplified side elevational view.
The illustrated harrow comprises a main frame 1 which through a pull rod or hitch 2 can be coupled to a tractor and which at its rearmost end is provided with a transport wheel 3, illustrated in its raised, inoperative position. The implement may as well be adapted to be suspended on the tractor so that the transport wheel becomes superfluous, and the main frame 1 may in an ordinary manner be composed of a centre section and a pair of side or wing sections lS which may be folded over the main section when the implement is to be transported on public roads.
A number o~ individual harrow sections 4, e.g.
seven, of which only one is seen in the drawing, are suspended side-by-side in the main frame 1. Each of said sections comprises a set of harrow tines 5 clamped in a tine frame 6, which through a pair of ordinary height adjustin~ mechanisms 7 wi~h handles or levers 8 is suspended in an intermediate frame 9.
Both in front of and behind the harrow section 4 said intermediate frame is provided with one or more drums, for instance so-called crumblers or rotacrats 10 which determine the height of the intermediate frame 9 above the soil surface 11. Said height too may be adjustable.
To transmit the pull force from the main frame 1 to the intermediate frame 9 and thus to the harrow section 4 there are provided, on the one hand, a link connection 13 at the front end of the interme-diate frame and, on the other hand, a telescopic stay 35 14 above the harrow section 14. The link or lever 13 ~2Zl)9~5 of the link connection is hinged to a mounting plate 15 on the main frame 1 and to the intermediate frame 9, its hinge point 16 on the mounting 15 being posi-tioned ahead of its hinge point 10 on the inter-mediate frame 9. The stay 14 may appropriately beconstituted by a hydraulic cylinder biased to exten-sion, which in a manner known per se is hydraulically connected with the corresponding cylinders associated with the other harrow sections and the upper end of which is supported by a mounting plate 17 from which the stay is directed forwards/downwards to a mounting fitting 18 on the intermediate frame 9.
As illustrated in dotted lines, the longitudi-nal directions of the link 13 and the stay 14 inter-sect in a point 19 which is on level with the shares of the harrow tines 5, and the pull and push forces transmitted through the link and the stay may, there-fore, as explained above, be combined into a horizon-tal resultant in the intersection point 19.
The hydraulic series connection of the cylin-ders of the stays 14 is intended, as is the case with analogous arrangements in prior harrows, to ensure uniform working depth of the harrow tines associated with the various intermediate frames eventhough the field is not in a plane transversely to the driving direction of the harrow.
Claims (2)
1. A flexible tine harrow for seed bed prepara-tion, comprising a main frame with hitch means for coupling to a tractor, a plurality of intermediate frames towingly connected with said main frame and each provided with earth engaging roller means, a harrow tine frame associated with each of said inter-mediate frames and adjustably suspended therein, and a set of harrow tines clamped in each of said harrow tine frames and having shares lying in the same level, each of said intermediate frames being connected with said main frame through a front link and a rear telescopic stay biased to extension, respectively, said link and said stay being hingedly connected to said intermediate frame and extending forwards/upwards and backwards/upwards, respectively, from their hinge points at such angles that their longitudinal directions intersect approximately at the level of said shares.
2. A flexible tine harrow as claimed in claim 1, wherein each of said telescopic stays of the inter-mediate frames includes a hydraulic cylinder, the various hydraulic cylinders being coupled in series with each other.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DK185083A DK148872C (en) | 1983-04-26 | 1983-04-26 | Spring tooth harrow for the preparation of soaps |
| DK1850/83 | 1983-04-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1220965A true CA1220965A (en) | 1987-04-28 |
Family
ID=8108531
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000452576A Expired CA1220965A (en) | 1983-04-26 | 1984-04-24 | Flexible tine harrow for the preparation of seed beds |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US4561504A (en) |
| EP (1) | EP0123561B1 (en) |
| CA (1) | CA1220965A (en) |
| DE (1) | DE3460671D1 (en) |
| DK (1) | DK148872C (en) |
| ZA (1) | ZA843028B (en) |
Families Citing this family (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3835366B4 (en) * | 1988-03-29 | 2011-06-09 | Josef Nusser | Device for ground adaptation of the working tools of hay machines |
| DE3835367C5 (en) * | 1988-03-14 | 2016-09-29 | Josef Nusser | Device for mowers for ground adaptation of the cutting units |
| US5193330A (en) | 1988-03-14 | 1993-03-16 | Josef Nusser | Agricultural reaping or haying machine |
| DE4006617B4 (en) * | 1988-09-02 | 2015-09-03 | Josef Nusser | Device for Halmteiler and the like. |
| DE3829789B4 (en) * | 1988-09-02 | 2004-08-05 | Josef Nusser | Harvesting device |
| DE4101489A1 (en) * | 1990-02-20 | 1991-08-22 | Josef Nusser | Cleaning machine for surface cleaning appliances - has swivel mounted tool holders to adapt to surface contours |
| WO1992002689A1 (en) * | 1990-08-08 | 1992-02-20 | Josef Nusser | Cleaning machine |
| WO1992002690A1 (en) * | 1990-08-08 | 1992-02-20 | Josef Nusser | Machine or implement |
| US5161622A (en) * | 1991-09-09 | 1992-11-10 | Godbersen Byron L | Field cultivator leveling device |
| US5628169A (en) * | 1995-01-20 | 1997-05-13 | Stiller; Daniel G. | Method and apparatus for supporting a turf mower cutting unit |
| WO1997015179A1 (en) * | 1995-10-26 | 1997-05-01 | Kverneland Klepp A.S | Integrated soil cultivating apparatus |
| US6119792A (en) * | 1999-04-08 | 2000-09-19 | Almer; Alvin D. | Land smoother and packer system |
| US6408950B1 (en) * | 2000-04-20 | 2002-06-25 | Kenneth E. Shoup | Foldable implement frame and hitch |
| US6896068B2 (en) | 2001-04-05 | 2005-05-24 | Cnh America Llc | Tillage implement with indexed harrow |
| US7021397B2 (en) * | 2003-08-06 | 2006-04-04 | Pitonyak Machinery Corporation | Folding furrow roller for the preparation of seed beds |
| US20080011494A1 (en) * | 2006-07-14 | 2008-01-17 | Martin Collins International, Ltd | Grooming Apparatus for Artificial Racetrack Surface |
| US20090032274A1 (en) * | 2007-07-31 | 2009-02-05 | Thomas Edward Pitonyak | Folding furrow chopper |
| CA2917554C (en) * | 2015-02-10 | 2023-02-28 | Salford Group Inc. | Tine harrow |
| US10542658B2 (en) * | 2016-11-07 | 2020-01-28 | Cnh Industrial America Llc | System for adjusting down pressure loads on ground engaging elements of an agricultural implement |
| US10368474B2 (en) * | 2017-01-25 | 2019-08-06 | Cnh Industrial America Llc | Double rolling basket linkage |
| US10405476B2 (en) * | 2017-01-25 | 2019-09-10 | Cnh Industrial America Llc | Double rolling basket attachment |
| RU199948U1 (en) * | 2020-03-03 | 2020-09-29 | Максим Александрович Мизюков | Tillage unit |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3126689A (en) * | 1964-03-31 | Protective device for farm implements | ||
| US641030A (en) * | 1898-02-14 | 1900-01-09 | George W Murray | Combined road breaker and scraper. |
| FR3331E (en) * | 1903-02-23 | 1904-10-21 | Pour Machines Agricoles Automobiles | Plowing machine |
| GB169286A (en) * | 1920-06-23 | 1921-09-23 | Douglas Campbell Sclanders | Improvements in cultivators |
| US2969119A (en) * | 1954-09-22 | 1961-01-24 | Leonard D Barry | Implement positioning device |
| US3155168A (en) * | 1962-12-20 | 1964-11-03 | Richard C Telecky | Chisel and sweep plow |
| US3299965A (en) * | 1964-06-24 | 1967-01-24 | Sokolik Edward | Soil conditioning apparatus |
| FR2437146A1 (en) * | 1978-09-27 | 1980-04-25 | Rau Gmbh Maschf | Combined soil working implement with support frame - has in frame front harrowing device and soil braking device in frame rear with limited working depth |
| US4479549A (en) * | 1983-08-01 | 1984-10-30 | Remlinger Manufacturing Co., Inc. | Ground working implement |
-
1983
- 1983-04-26 DK DK185083A patent/DK148872C/en not_active IP Right Cessation
-
1984
- 1984-04-20 US US06/602,334 patent/US4561504A/en not_active Expired - Lifetime
- 1984-04-24 CA CA000452576A patent/CA1220965A/en not_active Expired
- 1984-04-24 ZA ZA843028A patent/ZA843028B/en unknown
- 1984-04-26 DE DE8484302810T patent/DE3460671D1/en not_active Expired
- 1984-04-26 EP EP84302810A patent/EP0123561B1/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| EP0123561B1 (en) | 1986-09-10 |
| EP0123561A1 (en) | 1984-10-31 |
| US4561504A (en) | 1985-12-31 |
| DK148872B (en) | 1985-11-04 |
| DE3460671D1 (en) | 1986-10-16 |
| DK185083D0 (en) | 1983-04-26 |
| DK185083A (en) | 1984-10-27 |
| DK148872C (en) | 1995-10-30 |
| ZA843028B (en) | 1984-11-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |