Pivoting support wheel for mounting on a plow frame
A rotary plow ( 1 ) with pivoting support wheel ( 2 ) for mounting on a plow frame ( 3 ). The pivoting support wheel ( 2 ) is suitable for plows projecting far behind, such as multi-plowbody mounted, reversible plows or semi-mounted reversible plows with a movable rear part. Furthermore, the pivoting support wheel ( 2 ) exhibits self-steering characteristics which have different support or steering forces which act on the pivoting support wheel ( 2 ) or the plow frame ( 3 ) through the pushed or forwardly-directed arrangement of the pivot arm, and thus enables an accurate lateral guidance of the plow.
1. A rotary plow ( 1 ) with pivoting support wheel ( 2 ) for mounting on a plow frame ( 3 ) of the rotary plow ( 1 ), wherein the plow frame ( 3 ) comprising a plurality of mirror-inverted plow bodies ( 4 , 4 ′) lying opposite one another in pairs, which are brought from a right-hand turning into a left-hand turning position by a rotation of nearly 180°,
wherein said pivoting support wheel ( 2 ) is comprised of a support wheel ( 5 ) and an arm ( 6 ),
wherein said support wheel ( 5 ) is pivotably mounted on the plow frame ( 3 ) for depth limitation of the plow bodies ( 4 , 4 ′) by means of said arm ( 6 ), wherein the arm ( 6 ) that is supporting the support wheel ( 5 ) is limited in its pivot angle about a first axis ( 8 ) parallel to the ground surface ( 7 ) or running through a middle plane ( 20 ) of the plow frame ( 3 ) upon rotating the plow frame ( 3 ), and is locked into a right-handed or left-handed position corresponding to the plow orientation following this rotation by an additional device,
characterized in that
the movement of the arm ( 6 ) is about the first axis ( 8 ) in a driving direction and describes a maximum angle (α) of 160°, wherein the arm ( 6 ) or the support wheel ( 5 ) is mounted to rotate about a second forwardly-inclined axis ( 9 ) which is arranged in a plane running perpendicular to the ground surface ( 7 ) and parallel to the driving direction, wherein the second forwardly-inclined axis ( 9 ) is arranged in front of a wheel contact point ( 10 ) in order to form an intersection point ( 11 ) with the ground surface ( 7 ), which forms an imaginary guide point, around the driving direction of the support wheel ( 5 ).
2. The rotary plow with pivoting support wheel according to claim 1 ,
characterized in that
the pivoting movement of the arm ( 6 ) or of the support wheel ( 5 ) about the second axis ( 9 ) is respectively offset to the right and left from a middle position by a pivot angle of maximum of 60°.
3. The rotary plow with pivoting support wheel according to claim 2 ,
characterized in that
the pivoting movement about the second axis ( 9 ) from a middle position is respectively limited to a pivot angle of a maximum of 20° outside the middle position.
4. The rotary plow with pivoting support wheel according to claim 1 ,
characterized in that
the arm ( 6 ) is telescopic and comprises a pivot bearing ( 12 ) that is displaceable in the direction of the second axis ( 9 ) or the arm comprises a pivot bearing ( 12 ) that is telescopic.
5. The rotary plow with pivoting support wheel according to claim 1 ,
characterized in that
the pivoting support wheel ( 2 ), a pivot bearing ( 12 ) or the arm ( 6 ) is pivotable about a third axis ( 19 ) which is arranged approximately perpendicular to the ground surface ( 7 ) or to a plane of symmetry ( 20 ) of the plow frame ( 4 ).
6. The rotary plow with pivoting support wheel according to claim 5 ,
characterized in that
the third axis ( 19 ) about which the pivoting support wheel ( 2 ), the pivot bearing ( 12 ) or the arm ( 6 ) is pivotally mounted, corresponds to pivot axes ( 21 , 21 ′) of a plow body ( 4 , 4 ) or plow body pair.
7. The rotary plow with pivoting support wheel according to claim 1 ,
characterized in that
means to limit the pivotal speed of the pivoting support wheel ( 2 ) or of the arm ( 6 ) about the first and/or second axis ( 8 , 9 ) are arranged on the arm ( 6 ) or on the plow frame ( 3 ).
8. The rotary plow with pivoting support wheel according to claim 1 ,
characterized in that
the pivoting movement of the pivoting support wheel ( 2 ) about the first axis and/or the second axis ( 8 , 9 ) is supported or blocked by at least one external power device.
9. The rotary plow with pivoting support wheel according to claim 1 ,
characterized in that
the movement of the pivoting support wheel ( 2 ) or of the arm ( 6 ) about the second axis ( 9 ) is limited by means of locking means in a position at 90° to a middle position.
10. The rotary plow with pivoting support wheel according to claim 1 ,
characterized in that
the pivoting support wheel ( 2 ) is fastened near or adjacent to the rearwardmost plow body in the direction of travel.