抄録
The writer made analytical studies on the characteristics of the puddling rotor mounted on a small-type tractor, making special experiments on the load, and the puddling, characteristics in connection with the slippage of travelling wheels with a view to making clear the working conditions of a puddling rotor and obtaining the technical data for the development of new designs.
1. Power consumption
The power consumption in puddling per unit width per unit section showed an increase in logarithmical proportion to slippage and travelling speed.
2. Slippage rate, speed, etc.
The writer's experiments disclosed that the optimum slippage rate of travelling wheels was within the range of 40 to 50%, where the speed registered 0.68 to 0.81 meter per second. The consumption of electric power was 0.66 to 1.1kw while the horsepower required 0.9 to 1.1PS. The power consumption was 5 to 9w/cm per unit width, and 0.61 to 0.95w/cm2 per section, respectively. The puddling resistance measured 0.63 to 0.087kg/cm2.
3. The harrowing effect of the puddling rotor on aggregations smaller than 0.5mm and larger than 8cm was much diversified, while the harrowing index declined as the power consumption and the speed rose.
4. The puddling resistance increased in logarithmic prportion to the increase in the slippage rate.
