Basic Study on Disk Type Slurry Injector to Reduce Towing Resistance

—Effect of Disk Shape on the Resistance—

Abstract

Experiments were conducted to reduce the towing resistance of a disk type slurry injector unit for the purpose of increasing working speed and reducing fuel consumption. Three thicknesses and three diameters of solid disks were used in the experiments. The horizontal and vertical forces acting on a disk and gauge wheels were measured at 20, 40 and 60mm cutting depths. The towing resistance was reduced when the thickness of an injector disk was thinner or the diameter was larger. As the cutting depth of a disk increased, the upward vertical force applied by the soil to the disk increased, and the vertical force supported by the wheels decreased. This phenomenon is important in analyzing the generation of the resistance.