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US 5,107,663 AGranted
Farm machine having a deformable suspension mechanism
AssigneeKuhn S.A.
InventorsBernard Wattron, Roland Helfer
Life of this patent
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Abstract
A farm machine comprises at least one group of working elements and a structure having a hitching mechanism for hitching the farm machine to a motor vehicle during work. The group of working elements is connected to the structure which comprises a tongue (hitching mechanism), and a frame through a deformable quadrilateral suspension device which comprises suspension elements each one of which is connected to the structure through a first joint and to the group of working elements through a second joint.
Claims61
A farm machine which is movable in a direction of work, comprising:
- at least one group of working elements and a structure comprising a hitching means for hitching said farm machine to a motor vehicle during work, said at least one group of working elements being connected to said structure through a suspension device defining a deformable quadrilateral, wherein said suspension device comprises:
- first and second suspension elements each one of which is connected to said structure by a corresponding first joint and to said at least one group of working elements by a corresponding second joint, said first and second suspension elements forming a quadrilateral deformable in an at least approximately vertical direction;
- and
- at least one lateral suspension element which is connected to said structure by a first joint and to said at least one group of working elements by a second joint;
- wherein:
- axes of said first joints of said two suspension elements and an axis of said second joint of said second suspension element at least approximately define a first plane which is at least approximately vertical and directed, during work, in a forward direction with respect to said direction of work;
- an axis of said first joint and an axis of said second joint of said at least one lateral suspension element at least approximately define with the axis of said second joint of said second suspension element a second plane which intersects said first plane along a first straight line;
- said first joint of said at least one lateral suspension element at least approximately extends in said first plane and at least approximately in the vicinity of said first joint of said second suspension element in such a manner that said axis of said first joint of said at least one lateral suspension element and said axis of said first joint of said second suspension element are at least approximately merged;
- and
- said second joint of said at least one lateral suspension element is distant form said first plane and its axis is at least approximately located on a second straight line passing through the axis of said second joint of said second suspension element and orthogonal to said first straight line.
7 more elements
A farm machine which is movable in a direction of work, comprising:
- at least one group of working elements and a structure comprising a hitching means for hitching said farm machine to a motor vehicle during work, said at least one group of working elements being connected to said structure through a suspension device defining a deformable quadrilateral, wherein said suspension device comprises:
- a rigid suspension element connected to said structure by a first joint and to said at least one group of working elements by a second joint;
- and
- at least two rigid lateral suspension elements each one of which is connected to said structure by a corresponding first joint and to said group of working elements by a corresponding second joint, said at least two rigid lateral suspension elements forming with said rigid suspension element a quadrilateral deformable in an at least approximately vertical direction, wherein;
- an axis of said first joint of said rigid suspension element defines a first plane which is at least approximately vertical and directed, during work, in a forward direction with respect to said direction of work;
- axes of said first joints and axes of said second joints of said at least two rigid lateral suspension elements at least approximately define a second plane which intersects said first plane along a first straight line;
- said first joints of said at least two rigid lateral suspension elements at least approximately extend in said first plane and at least approximately in the vicinity of each other, and their axes are at least approximately merged;
- and
- said second joints of said at least two rigid lateral suspension elements are distant from said first plane and their axes are at least approximately located on a second straight line orthogonal to said first straight line.
6 more elements
Dependencies are inferred from the claim text.