Device and method for adjustment of sieve openings in a cleaning mechanism for a combine harvester

US6468154B1 · kind B1 · utility

Assignee

• CLAAS Selbstfahrende Erntemaschinen GmbH · DE

Inventors

• Georg Eggenhaus · Ostbevern, DE
• Eckehard Jeppe · Warburg, DE
• Dieter Strickmann · Beelen, DE
• Ulrich Claes · Dissen, DE

Key dates

• Filing date: Jul 7, 2000
• Grant date: Oct 22, 2002
• Expiry date: Jul 7, 2020

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A01F12/448
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

A device for adjusting the opening width of vibrating sieves in a cleaning mechanism of combine harvesters is arranged on and vibrates directly with the sieves or the sieve frame. The device includes an electric-motor-driven adjusting mechanism which actuates in a direction along an axis which differs from the direction in which the sieve is vibrating. A detector is activated when a particular sieve opening width is achieved. When the detector is activated, the particular opening width is associated with a position of the adjusting mechanism as measured by a position sensor, thereby allowing calibration of further adjustments to the sieve opening.