Electronically controlled hydraulic system for an agricultural implement
AssigneeCNH Canada, Ltd.
InventorCory Yuen
Life of this patent
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Abstract
A hydraulic control apparatus for a foldable farm includes first hydraulic control system is used to control weight transfer to ground engaging tools mounted to a stationary and foldable wing frame sections. A second hydraulic system is used to fold and unfold the wing sections. A hydraulic control is provided that interfaces with both hydraulic systems to control sequencing of the functions provided by the first and second hydraulic systems. The first and second hydraulic systems have electronically controlled valves to control the flow of hydraulic fluid to various lifting, folding, and down pressure cylinders.
Claims20
A hydraulic control apparatus for an agricultural implement, the implement having a stationary frame and a number of foldable frame sections pivotably coupled to the stationary frame, and a plurality of ground engaging tools mounted to the stationary frame and foldable frame sections, the apparatus comprising:
- a fluid supply port for coupling to a fluid supply line of a towing vehicle;
- a fluid return port for coupling to a fluid return line of the towing vehicle;
- a first hydraulic system that controls raising/lowering, providing trip force and down force to the ground engaging tools, the first hydraulic system in fluid communication with the fluid supply port and the fluid return port, and including a first set of electronically controlled hydraulic valves;
- and
- a second hydraulic system that controls folding and unfolding of the foldable frame sections, the second hydraulic system in fluid communication with the fluid supply port and the fluid return port, and including a second set of electronically controlled hydraulic valves.
A hydraulic control system for use with an agricultural implement frame, the frame having a center frame section and first and second wing sections mounted to opposite lateral sides of the center frame section, and further having ground engaging tools mounted to the center frame section and the wing sections, the system comprising:
- a first set of hydraulic cylinders mounted to the implement frame and configured to lower the ground engaging tools into a ground engaging position;
- a first set of solenoid controlled valves associated with the first set of hydraulic cylinders and configured to control flow of pressurized hydraulic fluid to the first set of hydraulic cylinders;
- a second and third set of hydraulic cylinders mounted to the implement frame configured to fold and unfold the first and second wing sections;
- a second set of solenoid controlled valves associated with the second and third set of hydraulic cylinders and configured to control flow of pressurized hydraulic fluid to the second set of hydraulic cylinders;
- and
- a hydraulic control operative to control the first set of solenoid controlled valves to disable the first set of hydraulic cylinders when the wing sections are being moved to a folded position by the second set of hydraulic cylinders and is further operative to control the second set of solenoid controlled valves to disable the third set of hydraulic cylinders when the ground engaging tools are in the ground engaging position.
An agricultural implement comprising:
- a tool bar having a stationary frame section adapted to be coupled to a towing vehicle and first and second wing sections pivotably coupled to opposite lateral sides of the stationary frame section;
- a plurality of ground engaging tools mounted to the tool bar;
- and
- an electronically controlled hydraulic control system for controlling movement of the tool bar, the control system having:
- a fluid supply port for coupling to a fluid supply line of a towing vehicle;
- a fluid return port coupling to a fluid return line of the towing vehicle;
- a first set of hydraulic cylinders interconnected between the tool bar and the plurality of ground engaging tools, and configured to move the plurality of ground engaging tools between a working position and a ground engaging position;
- a second set of hydraulic cylinders interconnected between the front of the tool bar and the sub-frames, and configured to apply downforce to the sub-frames and raise/lower the sub-frames;
- and
- a third set of hydraulic cylinders interconnected between stationary frame section and the first and second wing sections, and configured to move the wing sections between the working position and a folded position;
- and
- a single remote hydraulic control operative to control operation of the first set of hydraulic cylinders and the second set of hydraulic cylinders.
Dependencies are inferred from the claim text.