Apparatus and method for changing the position of a mowing mecha

Details Apparatus and method for changing the position of a mowing mecha Apparatus and method for changing the position of a mowing mecha

1989-03-09

1990-07-24

Bui, Thuy M.

Harvesters

Motorized harvester

With condition-responsive operation

A01D 3500

Patent

active

049427245

ABSTRACT:
A positional regulation of a mowing mechanism is effected in terms of height as a function of a ground pressure signal (SB) and in terms of swiveling in the transverse direction as a function of lateral ground clearance signals (SL, SR), the adjusting signals being carried to hydraulic valves (VT, VH; VL, VR).
The goal is to increase the accuracy and freedom from fluctuation in the course of the mowing mechanism cutting height.
The ground clearance signals (SL, SR) are used in proportion with the ground pressure signal (SB) for vertical position regulation. A linkage of these signals (SL, SR, SB) with further transducer signals and a method for automatic adaptation of the regulating characteristic by varying the hystereses and idle times of the regulators (V1, V1) is disclosed.
The regulating apparatus is used in harvesting and threshing combines when low-height crops are to be mowed and when the ground is bumpy and soft.

REFERENCES:
patent: 4495754 (1985-01-01), Cartner
patent: 4506464 (1985-03-01), Cartner
patent: 4518043 (1985-05-01), Anderson et al.

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