Deere + Company

Gkn Walterscheld Gmbh

Matthias Grimsel

Gerd Bernhardt

Karl Coenen

André Heinrich

Daniel Ocsenknecht

A method and arrangement for determination of the sharpness of chopping blades of a field chopper during chopping includes the steps of measuring, at least at two points in time, a characteristic parameter of the operating oscillation of a component of the chopping unit. Each such measurement obtains the oscillation fractions of at least two frequency bands of the measured signal or its peak, with the ratio between the two measurements being evaluated to generate a signal, when a certain deviation is determined between the initial measurement and the current measurement, which is indicative of the need to sharpen the chopping blades and the counterblade. The sharpening process can then be automatically initiated.

Method and arrangement for determination of sharpness of chopping blades

A device for controlling the position of a mountable implement relative to an implement carrier vehicle has a mountable implement () which can be moved at a predetermined height by the implement carrierfollowing the ground. A support element (), is coupled to the mountable implement () and can be attached to the implement carrier vehicle (). A coupling device (), is connected to the mountable implement () and to the support element (). The mountable implement () is freely adjusted to a lifting position corresponding to the height path relative to the support element (). An attachment device () attaches the support element () to the implement carrier vehiclehaving a lifting device. A sensor determines the actual lifting position of the mountable implement () relative to the support element (). A control device determines the deviation of the actual lifting position from a desired lifting position. The lifting device adjusts the support element () to a height position where the mountable implement () takes up the desired lifting position.

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Dresden, Germany

Matthias Grimsel