Integrated implement downforce control systems, methods, and apparatus

摘要

A downforce controller for an agricultural implement having a double-acting hydraulic cylinder. The cylinder is configured to be coupled to an agricultural row unit and an agricultural toolbar for transmitting a net downforce between the agricultural toolbar and the agricultural row unit. A first pressure in a first chamber of the cylinder and a second pressure in a second chamber of the cylinder have counteracting effects on the net downforce. A manifold coupled to the cylinder is in fluid communication with the first chamber. A pressure control valve coupled to the manifold is in fluid communication with the manifold and the first chamber.

主权项

1. A downforce control system for an agricultural implement, comprising:
a first downforce controller including a first pressure control valve housed in a first manifold, said first manifold coupled to a first actuator having a first chamber and a second chamber, said first pressure control valve in fluid communication with said first chamber; a second downforce controller including a second pressure control valve housed in a second manifold, said second manifold coupled to a second actuator having a third chamber and a fourth chamber, said second pressure control valve in fluid communication with said third chamber; and a third pressure control valve in fluid communication with said second chamber and said fourth chamber.