Patent ID: 11350552

Abstract:
The invention relates to agricultural manual implements with teeth, particularly to operating elements of hand cultivators.The operating element 2 of the cultivator 1 contains distributed spiral teeth 3, forming an open circular profile 4 in the plan. The spiral teeth 3 are connected in the upper part to each other in the shape of a regular polygon 5, while the pointed part 6 of the spiral tooth 3 smoothly passes into its remaining cylindrical part 7. The tilt angle of the spiral teeth 3 to the horizon is β=25-45°, the sharpening angle of the teeth is α=20-40°, the angle of rotation of the full penetration of the tooth 3 is γ=40-120°, and the thickness of the cutting edge 7 of the spiral tooth 3 is h=1-3 mm. The invention allows to reduce the fatigue of human muscles during loosening due to easy penetration of the operating element 2 of the cultivator 1 into the soil when it is installed on the soil at the angle δ=60-90° to the horizon while minimizing premature soil subsidence, eliminating the need to repeat cultivation of the same plot.