Speed energy-saving cultivator

A-hoe blades consisting of a share and a frog are used as working organs of cultivators. Main characteristics of share are the expansion angle of blades and the crumbling angle. For falling away of cut weed, the expansion angle should not exceed 70 degrees. The higher crumbling angle provides more intensive effect on the soil. There are also negative effects in working process: soil displacement aside, formation of grooves, removal of moist soil to the daylight surface. As far as copying elements of cultivator are separated by a distance from working organs, the variability of operating depth is increased. The article proposes a working organ combining copying and work functions, that allows to maintain precisely the operating depth. Flat share with crumbling angle equal to zero is used as a copying element. Spiral made as compression spring is used as a tillage tool; it is mounted on the back edge of share. Its diameter is 50-60 mm; the diameter of wire is 3-4 mm. During operation, the share with frog moves over the surface without casting-off the soil. The spirals loosen the soil and create the aggregate structure of topsoil. The turns of spiral affect the soil clods by spring tension and dramatically reduce the energy consumption. Working organs are mounted on plough beams made from leaf springs and ensure constant retention of spiral in the soil. Without casting-off the soil, the cultivator is able to work at the speed of 4-5 m/s, which significantly improves its performance. The performance gain is obtained not by extension of grasp width, which is related to the increase in materials consumption, but due to speed increase.

cultivator, spiral, plough beam, share, soil