プラウ及び犁のささりとそれが小型耕耘機に及ぼす影響について

抄録

On the study of base for penetration of plow, this paper investigated for max, depth, draft resistance, and curve of penetration by changing of length of beam and wedge angle of triangle edge.
1) Max. depth and inter-angle for each edges of each beams were as Table 3. This is, working depth penetrated deeply at small wedge angle, and the same at long beam. Inter-angle took the large angle at the small wedge angle and it was a little effected for the length of beam.
2) Moment of point of share for each max, depth increased on the long beam and small wedge angle. Draft resistance increased steeply with the increasing depth and it was thought by friction at the landside and the sole.
3) The locus by penetration of both the landside heel any point of share was metamorphosis of trochoid curve that took parameter of φ and function F (φ) for distance of drive, and it would be explained from this formula the reason that strength of compression for sole and the locus of penetration fixed by the length of landside.