INFLUENCE OF STRUCTURAL AND TECHNOLOGICAL PARAMETERS OF A CULTIVATOR WITH RIGHT- AND LEFT-SIDED FLAT-CUTTING PAWS ON SOIL TILLAGE RESISTANCE

Abstract

The materials of the article discuss the issue of the effectiveness of the use of a cultivator with right- and left-sided flat-cutting paws mounted on a longitudinal base on both sides in a staggered arrangement, with continuous tillage. Analytical dependences were derived reflecting the influence of the design and technological parameters of the proposed design of the cultivator on the resistance of tillage. To confirm the possibility and adequacy of the application of the presented dependences, laboratory and field studies were carried out. The studies were carried out in accordance with the requirements of GOST 20915-2011, GOST 33687-2015, GOST R 54783-2011. For these purposes, a design was developed that imitates the proposed design of the cultivator. In the course of laboratory studies, it was found that with an increase in the depth of tillage with the right- and left-sided flat-cutting paw of the cultivator, there is a sharp increase in the resistance of tillage and at a tillage depth of 4 cm, the increase was 56.7%, at a depth of 6 cm - 39.1% ; 8 cm - 28.9%; 10 cm - 24.1% and 12 cm - 20.4%. Increasing the speed of tillage by the cultivator of the proposed design also leads to an increase in the resistance of tillage. It was found that by increasing the soil tillage speed to 1.8 m/s, an increase in soil tillage resistance up to 9.4% was recorded, and a further increase in tillage speed leads to a higher increase in soil tillage resistance up to 23.5%. Conducted field tests fully confirmed the results of theoretical and laboratory studies. The comparison of the results of soil tillage resistance performed by the serial cultivator KPS-4.0-0.2 found that it is 9.8% higher compared to the cultivator of the proposed design. This circumstance allows us to conclude that the use of a cultivator with right- and left-sided flat-cutting paws is effective in tillage.