Arrangement for the adjustment of a shearbar with respect to a chopper assembly and a method of adjustment thereof

US7222804B2 · kind B2 · utility

Assignee

• Deere & Company · US

Inventors

• Helmut Wolf · Holzkirchen, DE
• Steffen Clauss · Pirmasens, DE
• Manfred Engel · Zweibrücken, DE

Key dates

• Filing date: Mar 29, 2005
• Grant date: May 29, 2007
• Expiry date: Nov 30, 2025

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B02C2210/02
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

The invention concerns an arrangement for the adjustment of the position of a shearbar with respect to knives of a chopper assembly. The arrangement includes a first adjusting drive to position the first end of the shearbar at a predetermined first spacing from the knives and a second adjusting drive to position the second end of the shearbar with respect to the knives until a spacing measurement arrangement indicates that the spacing between the shearbar and the knives is less than a threshold value. An analogous procedure is applied to the first adjusting drive. On the basis of the measurement values the shearbar is brought into a position that corresponds to a desired gap between the shearbar and the knives. Each of the first spacing and the second spacing are greater than the desired gap between the shearbar and the knives.