Studies on the Cultivating Action of Rotary Tines (2.)

The Test Apparatus of Cultivating Resistance

Abstract

As it is very important to find the cultivating resistance to improve the efficiency of rotary tillage, the author made the test apparatus for the purpose of measuring the cultivating resistance of a rotary tine (Fig. 1).
By this apparatus, the horizontal and vertical components of cultivating resistance of a tine are determined by means of the measurement of displacement of an end of rotary shaft occures by rotary tillage.
The soil box is filled with the soil and it is pulled by a motor, a tine cultivats the soil during the soil box is running.
Two components of cultivating resistance, revolution of tine, velocity of soil box are recorded by means of the optical method.
The sensitivities are about 0.55mm/kg in horizontal and 0.70mm/kg in vertical component.
Fig. 4 shows the recording chart of some pointed tine.