Hydraulic down pressure control system for an agricultural implement
First Claim
1. An agricultural row unit comprising:
- an attachment frame adapted to be rigidly connected to a towing frame;
a linkage assembly pivotably coupled to the attachment frame to permit vertical pivoting movement of the linkage assembly relative to the attachment frame;
a hydraulic cylinder coupled to the linkage assembly for urging the linkage assembly downwardly toward the soil; and
a manifold removably mounted to the hydraulic cylinder via a mounting interface, the manifold being selected from a group of different types of modular manifolds in which each manifold is removably mountable to the hydraulic cylinder, one at a time, via the same mounting interface, the manifold having two hydraulic-fluid ports including an inlet port and an outlet port.
3 Assignments
0 Petitions
Accused Products
Abstract
An agricultural row unit includes an attachment frame adapted to be rigidly connected to a towing frame, and a linkage assembly pivotably coupled to the attachment frame to permit vertical pivoting movement of the linkage assembly relative to the attachment frame. A hydraulic cylinder is coupled to the linkage assembly for urging the linkage assembly downwardly toward the soil, and an accumulator is mounted to the hydraulic cylinder for supplying pressurized gas to the hydraulic cylinder urging the linkage assembly upwardly away from the soil. A manifold is removably mounted to the hydraulic cylinder via a mounting interface, the manifold being selected from a group of different types of modular manifolds in which each manifold is removably mountable to the hydraulic cylinder, one at a time, via the same mounting interface, the manifold having two hydraulic-fluid ports including an inlet port and an outlet port.
344 Citations
22 Claims
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1. An agricultural row unit comprising:
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an attachment frame adapted to be rigidly connected to a towing frame; a linkage assembly pivotably coupled to the attachment frame to permit vertical pivoting movement of the linkage assembly relative to the attachment frame; a hydraulic cylinder coupled to the linkage assembly for urging the linkage assembly downwardly toward the soil; and a manifold removably mounted to the hydraulic cylinder via a mounting interface, the manifold being selected from a group of different types of modular manifolds in which each manifold is removably mountable to the hydraulic cylinder, one at a time, via the same mounting interface, the manifold having two hydraulic-fluid ports including an inlet port and an outlet port. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An agricultural row unit comprising:
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an attachment frame adapted to be rigidly connected to a towing frame; a linkage assembly pivotably coupled to the attachment frame to permit vertical pivoting movement of the linkage assembly relative to the attachment frame, the linkage assembly having a pair of upper links and a pair of lower links that define an internal linkage area of the row unit; a hydraulic cylinder coupled to the linkage assembly for urging the linkage assembly downwardly toward the soil, the hydraulic cylinder including a mounting interface; a control manifold removably mounted to the hydraulic cylinder via the mounting interface, the control manifold including an electronic control module integrated with a connection manifold, the control module including a control valve for controlling pressure in the hydraulic cylinder, the connection manifold having two hydraulic-fluid ports for coupling to respective fluid hoses, the mounting interface being configured to receive a different manifold selected from a group of different types of modular manifolds in which each manifold is removably mountable to the hydraulic cylinder, one at a time, via the same mounting interface. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. An agricultural row unit comprising:
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an attachment frame adapted to be rigidly connected to a towing frame; a linkage assembly pivotably coupled to the attachment frame to permit vertical pivoting movement of the linkage assembly relative to the attachment frame, the linkage assembly having a pair of upper links and a pair of lower links that define an internal linkage area of the row unit; a hydraulic cylinder coupled to the linkage assembly for urging the linkage assembly downwardly toward the soil, the hydraulic cylinder having a main body, an accumulator receiver, and a mounting interface, the accumulator receiver extending from the main body in an opposite direction from the mounting interface; an accumulator protective cover enclosing an accumulator and positioned adjacent to the hydraulic cylinder, the accumulator having an end mountably received within the accumulator receiver; and a manifold removably mounted, via the mounting interface, to the hydraulic cylinder within the internal linkage area of the row unit, the manifold being selected from a group of different types of modular manifolds in which each manifold is removably mountable to the hydraulic cylinder, one at a time, via the same mounting interface of the hydraulic cylinder. - View Dependent Claims (18, 19, 20, 21, 22)
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Specification