EP0168385A1 - Mecanisme de commande et de traction pour un rondeau agricole ou un dispositif similaire - Google Patents
Mecanisme de commande et de traction pour un rondeau agricole ou un dispositif similaireInfo
- Publication number
- EP0168385A1 EP0168385A1 EP19840900547 EP84900547A EP0168385A1 EP 0168385 A1 EP0168385 A1 EP 0168385A1 EP 19840900547 EP19840900547 EP 19840900547 EP 84900547 A EP84900547 A EP 84900547A EP 0168385 A1 EP0168385 A1 EP 0168385A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- swivel arm
- swivel
- slewed
- arms
- sections
- 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.)
- Withdrawn
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
- A01B73/06—Folding frames foldable about a vertical axis
- A01B73/067—Folding frames foldable about a vertical axis to a position essentially rearward of the axis, in relation to the direction of travel
Definitions
- the present invention relates to a traction and control mechanism for work implements such as an agricultural roller intended to he pulled by a tractor or similar means and comprising at least two implement sections fitted on swivel arms capable of being slewed in the horizontal plane between a transport position in which all sections are one behind the other in the direction of pull and a working position in which the sections are slewed out to either side of the implement's centre line.
- the agricultural roller to which the invention can be applied consists of two or several roller sections each with a frame in which a number of roller rings are located on a common shaft.
- the frame is provided with a draw-bar by means of which the roller section is linked to the tractor or to the frame of a preceding roller section or to a special traction device so that the working widths of the roller sections overlap one another to some extent.
- a disadvantage of these rollers consists in the fact that the roller sections must be switched manually from the working position of the roller to its transport position, in which the sections are required to travel one behind the other and with complete overlap so that the width of the roller will permit e.g. transportation by road. With this method the roller rings run on the ground during transportation.
- the mechanism comprises two link arms supporting at least one roller section and characterised inter alia by the fact that-one link arm is provided with a bracket for a roller section, the said bracket being fixed in relation to the said link arm whereas the other link arm is provided with a bracket capable of being displaced in the longitudinal direction of the said link arm.
- the known mechanism is not limited to agricultural rollers comprising two or several roller sections but can be adapted to various types of work implement capable of being pulled by e.g. a tractor.
- a disadvantage of the known mechanism consists in that owing to the telescopic movements of the swivel arms maintenance has to be relatively exact for the mechanism to function.
- the present invention is intended to provide a mechanism which does not exhibit the disadvantages of the known mechanisms.
- the object has been achieved by the present traction and control mechanism which can be applied both to agricultural rollers and other work implements and which comprises two swivel arms to which implement sections are linked.
- the swivel arms can be slewed in the horizontal plane between a transport position in which all sections are one behind the other in the direction of pull and a working position in which the side sections are slewed outward to either side of the implement's centre line.
- the mechanism is characterised in that the swivel arms consist in a long and a short swivel arm, each being provided with a fixed implement holder and in that the implement holder of the long swivel arm is behind the implement holder of the short swivel arm when the swivel arms are slewed back towards the direction of pull, towards one another and parallel to the centre line of the implement.
- the long swivel arm to be capable of being slewed about a vertical main spindle which is connected with a traction device linked to the tractor, the short swivel arm being capable of being slewed about a likewise vertical pivot spindle by means of which the swivel arms are linked.
- the movements of the swivel arms are brought about with the aid of a hydraulic ram acting on the long swivel arm and, by means of a linkage, also acting on the short swivel arm.
- the movements of the swivel arms and the other components consist in purely rotary movements, as a result of which maintenance of the mechanism is greatly simplified.
- Figure 1 shows schematically an agricultural roller with a central roller section and two side roller sections viewed straight from above in the working position.
- Figure 2 shows the agricultural roller in accordance with figure 1 in the transport position viewed from above.
- Figure 3 shows a detail of the swivel arms of a roller in accordance with figures 1 and 2.
- the agricultural roller in accordance with the example comprises a central roller section 1 consisting of several roller rings 12 which are connected to a frame 13 with the aid of a common shaft 14.
- Frame 13 is provided with a draw-bar 15 linked to the pulling tractor, which is not shown in the figures.
- the roller comprises also two side roller sections 2, 3, the design of which is substantially identical with that of the centre section.
- Each of the side sections 2, 3 is connected to its swivel arm 4, 5, the said swivel arms being capable of being slewed in the horizontal plane between a transport position in which all sections 1, 2, 3 are one behind the other in the direction of pull and a working position in which the sections 2, 3 axe slewed out to either side of the roller's centre line.
- the swivel arms 4, 5 consist in a long swivel arm 4 and a short swivel arm 5, each of them provided with an implement holder 6.
- the long swivel arm 4 can be slewed about a main spindle 7 linked with draw-bar 15 on frame 13 of centre section 1.
- the short swivel arm 5 can be slewed about a pivot spindle 8 linking the swivel arms 4, 5.
- the long swivel arm 4 is slewed out so as to form a right angle in respect of the direction of pull, and the short swivel arm 5 is slewed out so that it is in line with the long swivel arm, on the opposite side of the roller.
- the distance between the main spindle 7 and implement holder 6 of the respective swivel arm is the same.
- the long swivel arm 4 is slewedwith the aid of a hydraulic ram 9 of which one end is rotatably joined to the said swivel arm the other end being rotatably connected with the traction device 15 on centre section 1 by means of a link 10 extending rearward from the main spindle 7.
- the short swivel arm 5 is slewed with the aid of a tie-rod 11, one end of which is rotatably secured to the said swivel arm while its other end is rotatably connected with link 10.
- the swivel arms 4, 5 are locked to one another in the working position with the aid of a locking device 16, whereby these components form together with link 10 and tie-rod 11 a rigid framework enabling the swivel arms 4, 5 to retain their extension perpendicular to the direction of pull while the roller is working.
- the locking device 16 comprises a pawl 17 capable of being turned about a vertical spindle 18 and attached to the long swivel arm 5, whereby this pawl grips, in the working position, a catch 19 attached to the short swivel arm 5.
- Pawl 17 is opened with the aid of a tie-rod 20 and maintained in the locked position with the aid of a helical spring 21 supported against a seat 22 and acting on the pawl 17.
- the tie-rod 20 is linked at one end to a yoke 23 fitted to the long swivel arm 4 and capable of being rotated between two positions about a vertical spindle 24.
- the other end of yoke 23 is subject to the action of the hydraulic ram 9 so that when subject to pressure it keeps the pawl 17 locked, holding it open when subject to pull. In the course of locking to the working position the pawl 17 is opened by pressure from catch 19.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Soil Sciences (AREA)
- Environmental Sciences (AREA)
- Agricultural Machines (AREA)
Abstract
Un mécanisme de commande et de traction pour des outils de travail, par exemple un rondeau agricole conçu pour être tiré par un tracteur ou un mécanisme similaire, comporte au moins deux sections d'outils (2, 3) fixées à des bras pivotants (4, 5) pouvant être tournés dans le plan horizontal entre une position de transport où toutes les sections (1, 2, 3) sont l'une derrière l'autre dans la direction de traction et une position de travail où les sections latérales (2, 3) sont sorties de chaque côté de la ligne médiane de l'outil. Les bras pivotants se composent d'un long bras pivotant (4) et d'un bras pivotant court (5), chaque bras pivotant possédant un porte-outil fixe (6). Le porte-outil du long bras pivotant (4) se trouve derrière le porte-outil du bras pivotant court (5) lorsque les bras pivotants (4, 5) sont tournés vers l'arrière dans la direction de traction, en direction l'un de l'autre et parallèlement à la ligne médiane de l'outil. Il est avantageux pour le long bras pivotant (4) de pouvoir être tourné autour d'un arbre principal (7) relié à un dispositif de traction (15) connecté au tracteur. Le bras pivotant court (5) peut tourner autour d'un arbre de pivot (8) reliant les bras pivotants (4, 5). La distance séparant l'arbre principal (7) du porte-outil (6) des bras pivotants respectifs (4, 5) est la même lorsque les bras pivotants (4, 5) sont sortis en position de travail
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/SE1984/000005 WO1985002971A1 (fr) | 1984-01-12 | 1984-01-12 | Mecanisme de commande et de traction pour un rondeau agricole ou un dispositif similaire |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0168385A1 true EP0168385A1 (fr) | 1986-01-22 |
Family
ID=20354192
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19840900547 Withdrawn EP0168385A1 (fr) | 1984-01-12 | 1984-01-12 | Mecanisme de commande et de traction pour un rondeau agricole ou un dispositif similaire |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0168385A1 (fr) |
WO (1) | WO1985002971A1 (fr) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4881603A (en) * | 1988-12-19 | 1989-11-21 | Hartman Leroy | Tow frame |
DE9100178U1 (de) * | 1991-01-09 | 1991-03-28 | Wilh. Chr. Brix GmbH, 2341 Mohrkirch | Vorrichtung zur schwenkbaren Befestigung eines Nachlaufgerätes |
US5261497A (en) * | 1992-04-30 | 1993-11-16 | Deere & Company | Multiple implement hitch and steerable wheel assembly therefor |
JP6974188B2 (ja) * | 2018-01-16 | 2021-12-01 | 日農機製工株式会社 | 農業用整地機 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DK88121C (da) * | 1958-02-20 | 1959-11-09 | John Artur Sigfrid Gustavsson | Selvkoblende ringtromle. |
SE388750B (sv) * | 1974-12-04 | 1976-10-18 | Vamo Ab | Foretredesvis for jordbearbetning avsedd veltenhet |
DE2558594A1 (de) * | 1975-12-24 | 1977-07-07 | Tigges Geb Fa | Ackerwalze |
GB2021913B (en) * | 1978-05-31 | 1982-09-02 | Smith Ltd J R C | Farm implement |
GB2047063B (en) * | 1979-04-10 | 1983-02-16 | Hughes J W E | Linkage for a number of farm implements |
FR2454747A1 (fr) * | 1979-04-24 | 1980-11-21 | Pichot Denis | Perfectionnements aux machines agricoles, tels que rouleaux, emotteurs et machines similaires |
-
1984
- 1984-01-12 WO PCT/SE1984/000005 patent/WO1985002971A1/fr unknown
- 1984-01-12 EP EP19840900547 patent/EP0168385A1/fr not_active Withdrawn
Non-Patent Citations (1)
Title |
---|
See references of WO8502971A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO1985002971A1 (fr) | 1985-07-18 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Designated state(s): AT BE CH DE FR GB LI LU NL SE Kind code of ref document: A1 Designated state(s): AT BE CH DE FR GB LI LU NL SE |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 19851217 |