Soil working machiens including height and pitch tool adjustability

A work machine comprising:

• a chassis;
• a plurality of ground contacting members coupled with and rotatable relative to the chassis;
• a suspension coupled with an earth working tool, the suspension accommodating movement of the earth working tool relative to the chassis in response to an external force applied to the earth working tool;
• a first adjustment mechanism coupled with the earth working tool and coupled with the chassis;
• and
• a second adjustment mechanism coupled with the suspension and coupled with the chassis;
• wherein the earth working tool is rotatable relative to the chassis about at least two distinct axes of rotation and the first adjustment mechanism and the second adjustment mechanism are adjustable to position the earth working tool at a first vertical distance relative to a plane of an underlying ground surface and at a first pitch relative to the plane, and to position the earth working tool at a second vertical distance relative to the plane and at the first pitch relative to the plane, the second vertical distance being greater than the first vertical distance.

A work machine comprising:

• a chassis extending along a width in an X-axis direction of an X-Y-Z orthogonal coordinate system, extending along a length in a Y-axis direction of the X-Y-Z orthogonal coordinate, and extending along a height in a Z-axis direction of the X-Y-Z orthogonal;
• a plurality of ground contacting members rotatably coupled with the frame;
• a suspension member coupled with an earth working tool, the suspension member accommodating movement of the earth working tool relative to the frame in response to an external force applied to the earth working tool;
• a first adjustment mechanism coupled with the earth working tool and coupled with the frame;
• and
• a second adjustment mechanism coupled with the suspension member and coupled with the frame;
• wherein the earth working tool is rotatable relative to the frame about a plurality of axes of rotation, the plurality of axes of rotation extending in the X-axis direction and spaced apart from one another to accommodate positioning of the earth working tool at a first Z-axis position relative to an X-Y plane contacting the underlying ground surface and at a first pitch relative to the X-Y plane, and to position the earth working tool at a second Z-axis position relative to the X-Y plane and at the first pitch relative to the X-Y plane, the second Z-axis position being farther from the X-Y plan than the first Z-axis distance.

An apparatus comprising:

• a chassis;
• a plurality of ground contacting members supporting and rotatable relative to the chassis;
• a suspension coupled with an earth working tool, the suspension being compressible in response to an external force applied to the earth working tool;
• a first adjustment mechanism coupled with the earth working tool and coupled with the chassis;
• and
• a second adjustment mechanism coupled with the suspension and coupled with the chassis;
• wherein the earth working tool is rotatable relative to the chassis about a first axis of rotation and about a second axis of rotation spaced apart from and parallel with the first axis of rotation, adjustment of the first adjustment mechanism being effective to rotate the earth working tool about the first axis of rotation and adjustment of the second adjustment mechanism being effective to rotate the earth working tool about the second axis of rotation.