Packing pressure adjustment assembly for a ground opener unit
First Claim
1. A disc opener apparatus comprising:
- a frame adapted to be mounted to a tool bar of an agricultural implement;
an axle carried by the frame;
a disc rotatably mounted to the axle and adapted to cut a furrow into a planting surface;
a set of pressure setting engagement members formed on a portion of the frame;
a packer wheel coupled to the frame by a packer wheel arm;
a packer pressure adjustment assembly mounted to the frame and adapted to exert a pressure on the packer wheel arm, wherein an amount of pressure exerted on the packer wheel arm by the packer pressure adjustment assembly is set based on which of the pressure setting engagement members the packer pressure adjustment assembly is engaged, wherein the packer pressure adjustment assembly includes;
a packer pressure adjustment arm coupled to the axle and adapted to be selectively engaged with the set of pressure setting engagement members at a user selected one of a plurality of packing pressure positions; and
a linear spring interconnected between the packer pressure adjustment arm and the packer wheel arm, and configured to exert a force on the packer wheel arm dependent upon the user selected packing pressure position of the packer pressure adjustment arm.
2 Assignments
0 Petitions
Accused Products
Abstract
A packing pressure adjustment assembly for a ground opener unit of an agricultural implement includes a spring interconnected between a rotatable pressure adjustment arm and a trailing arm to which a packer wheel is rotatably mounted. The pressure adjustment arm is centered about an axle of the ground opener unit and is movable between a set of mounting positions that are defined by a set of teeth spaced and arced from one another along a frame portion of the ground opener unit. As the pressure adjustment arm is rotated, the amount of force exerted by the spring on the trailing arm is varied. The packing pressure adjustment assembly is relatively compact and is useful in providing high packing forces, such as a packing force in excess of 100 lbs.
20 Citations
10 Claims
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1. A disc opener apparatus comprising:
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a frame adapted to be mounted to a tool bar of an agricultural implement; an axle carried by the frame; a disc rotatably mounted to the axle and adapted to cut a furrow into a planting surface; a set of pressure setting engagement members formed on a portion of the frame; a packer wheel coupled to the frame by a packer wheel arm; a packer pressure adjustment assembly mounted to the frame and adapted to exert a pressure on the packer wheel arm, wherein an amount of pressure exerted on the packer wheel arm by the packer pressure adjustment assembly is set based on which of the pressure setting engagement members the packer pressure adjustment assembly is engaged, wherein the packer pressure adjustment assembly includes; a packer pressure adjustment arm coupled to the axle and adapted to be selectively engaged with the set of pressure setting engagement members at a user selected one of a plurality of packing pressure positions; and a linear spring interconnected between the packer pressure adjustment arm and the packer wheel arm, and configured to exert a force on the packer wheel arm dependent upon the user selected packing pressure position of the packer pressure adjustment arm. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification