Tillage Characteristics by Scoop Surface Length of Blade in Deep Rotary Tillage

Abstract

The tillage characteristics of the short scoop surface blade (short blade) have been measured and analyzed. The tillage resistance of the short blade was measured under field conditions and compared with the normal scoop surface blades (standard blade). The maximum tillage speed which was caused by falling of the tractor engine revolution with the overloads was 0.25m/s using the standard blade and 0.4m/s for the short blade. The torque requirement of the rotary shaft using the short blades was 10% lower compared to standard blades. Furthermore, it was found that the level of torque variance of the rotary shaft using the short blade was also smaller compared to standard blade. The quality of tillage was almost the same with both types of blades. In summary, it was concluded that short blades have an advantage against standard blades for the deep rotary tillage operation.