Earth working – Plural wheeled implements – Outrigged implement adjustable inwardly
Patent
1989-04-19
1990-01-30
Reese, Randolph A.
Earth working
Plural wheeled implements
Outrigged implement adjustable inwardly
172456, 172662, A01B 7306, A01B 2900
Patent
active
048967327
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to apparatus in agricultural rollers intended for soil cultivation, and including a) two or more sections pivotably connected to each other and arranged side by side, where a frame associated with a centrally situated section of the roller has a towing bar pivotably connected to this central frame for transport and towing after a tractor, b) roller sections with roller frames arranged on either side of the central frame, and carrying rotatable roller means for working the soil, and c) transport wheels which are settable between an inactive position above the ground in the work position of the roller and a transport position where the wheels support and carry the roller with the roller means lifted from the ground and pivoted towards each other so that a decreased transport width is obtained.
Agricultural roller of this type are known, inter alia from the Swedish Patents No. 7704263-8 (GB No. 1,593,573) and 7900384-4 (FR No. 8000871). These rollers are equipped with a hydraulic unit for pivoting the transport wheels between an inactive position and a transport position, there being a further hydraulic unit for pivoting the side sections between work position and transport position.
This means that extensive and costly operating means are required for handling the rollers in changing between work on a field and transport between different work places.
A very simple and cheap roller is achieved through the invention, although it has the many advantages of the known rollers mentioned in the introduction. This is achieved in an amazingly simple way by the distinguishing features disclosed in the claims.
The invention will now be described in more detail in connection with an exemplifying embodiment illustrated on the accompanying drawings, where
FIG. 1 illustrates in a perspective view seen obliquely from behind a roller pulled by a tractor when the roller is in its work position,
FIG. 2 is a perspective view with the roller in its transport position,
FIG. 3 illustrates the roller from above when it is in its work position,
FIG. 4 is a side view of the roller in its work position,
FIG. 5 is a corresponding side view of the roller when it is in an intermediate position between work position and transport position,
FIG. 6 is a side view of the roller in a position where the roller has been set down on its transport wheels,
FIG. 7 is a view from above of the roller in the position illustrated in FIG. 6,
FIG. 8 is a corresponding view where the outer sections have been taken to an intermediate position for retraction to the transport position,
FIG. 9 is a view from above of the roller in its transport position,
FIG. 10 is a view in the direction X--X in FIG. 2,
FIG. 11 is a view from above of a link connection between the side sections,
FIGS. 12, 13 and 14 illustrate a roller with helically shaped roller means arranged in three sections, which otherwise correspond to the roller described in FIGS. 1-12,
FIGS. 15, 16 and 17 are different perspective views of a roller with five sections but otherwise corresponding to the roller described in FIGS. 1-12 .
In FIG. 1, the numeral 1 denotes a tractor, with a towing means 2 pivotably connected to the central section 5 of the roller, while the numeral 3 denotes hydraulic lines to a hydraulic cylinder 21 arranged between the towing means 2 and the central section 5. The left hand side section of the roller is denoted by 4 and the right hand side section by 6. The frames for the sections 4, 5 and 6 are respectively denoted by 7, 8 and 9. There are carrying arms 10 at either end of the section frames, these arms carrying the ends of the shafts on which the rolling sets 12, 13 and 14 are mounted. The shaft ends are carried by the arms 10 in elastic mountings 11.
Transport wheels 15 and 16 are rotatably mounted on brackets extending backwards and downwards in FIG. 1 from the side frames 7 and 9 to which the brackets are rigidly attached.
Pivot pins 17 and 18 are also illustrated in FIG. 1, the pin 17 being the connection between left side section 4 a
REFERENCES:
patent: 3548954 (1970-12-01), Lindemann
patent: 3700040 (1972-10-01), Sosalla et al.
patent: 3841412 (1974-10-01), Sosalla
patent: 3990521 (1976-11-01), Ankenman et al.
patent: 4223742 (1980-09-01), Stark
patent: 4318444 (1982-03-01), Hake
patent: 4418762 (1983-12-01), Page
patent: 4821809 (1989-04-01), Summach et al.
Reese Randolph A.
Thompson Jeffrey L.
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