Study on Working Process of No-tillage Disc Coulter

Abstract

Disc coulter is a widely used stubble-cutting component in no-tillage seeder which is very important to conservational tillage. An understanding of working process of disc coulter is necessary for developing no-tillage seeder with high quality and reliability. By force analysis, the condition that maize stalk on soil surface was cut off and not pushed forward was derived and the minimum diameter of disc coulter was determined. The change of sliding cutting angle of cutting edge in the working process was analyzed, and the influence of coulter slip on the sliding cutting angle and velocity of any point on cutting edge was studied. This study provided valuable information for the disign and application of disc coulter and no-tillage seeder.