Earth working – Automatic power control – Land leveller type
Patent
1995-01-19
1997-08-05
Melius, Terry Lee
Earth working
Automatic power control
Land leveller type
172239, 172310, 36442407, 56 102E, F01B 2526
Patent
active
056532920
ABSTRACT:
The zone tillage coulters on a drilling or planting implement are maintained at an essentially constant running depth by control apparatus that includes a programmed microprocessor-based controller and a hydraulic operating system that receives commands from the controller based upon inputs received from various sensors. One such sensor comprises a ground wheel which rides along the ground and swings up or down as changes in the terrain are encountered, such motions thus imparting voltage inputs to the controller which compares such inputs with previously selected data inputted by the operator. If the comparison results in a sufficiently large difference between the operator-selected data and the actual data coming from the sensor, the controller will cause a tongue cylinder to be actuated in the appropriate direction to buckle the tongue about a horizontal axis and thus either raise or lower the tongue and coulter gangs fastened thereto. Another sensor detects ground speed and inputs that information into the controller to influence the frequency of output pulses from the controller, while a third sensor detects when the machine is raised into its transport position at the end of a row so that coulters can be elevated to facilitate turn around of the machine. Adjustments can be made by the operator on the go, and manual override is also provided.
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McClure J. Michael
McGuire Thomas O.
Obenland Dan J.
Ptacek Timothy J.
Great Plains Manufacturing Incorporated
Melius Terry Lee
Novosad Christopher J.
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