The transporting ability of the rotor of the soil-cultivating loosening and separating vehicle
Abstract
The subject of research is the process of interaction between the working bodies of the rotor of a soil-cultivating loosening and separating vehicle. The object of the study is a rotor knife, the transporting ca-pacity of which is determined by the size of the grooves left in the soil with a cross-sectional shape close to the trapezoid shape. The physical process of interaction with the soil of the rotor blade of a loosening and separating device is considered. In the first phase, when the knife is buried in the soil, a soil build-up is formed in front of the knife. In the second phase of the knife operation, the soil is under the influence of a build-up, the magnitude of which increases until the internal stresses in it reach the limit values and do not partially break it down. In the third phase of the impact of the knife on the soil, the build-up begins to separate from the main part of the soil and is discharged from the separation grid. The direction and mag-nitude of the displacement of the soil, as well as the parameters and shape of the grooves formed after the passage of the knife, are determined. It has been established that the thickness of the applied soil layer to the loosening and separating device and the angle of the rotor knife break have the greatest effect on the transporting ability of the rotor blade, the width of the rotor blade has the least effect. It has been proven that an increase in the transporting capacity of the rotor at the initial moment of entry of the knife into the soil can be achieved mainly by reducing the angle of entry of the rotor knives into the soil. The theoretical studies were applied using mechanical and mathematical modeling of the interaction of the working bodies with the soil. Baseline information to substantiate the study was obtained experimentally and by analyzing literary sources. The urgency lies in the fact that increasing the transporting ability of the rotor by reducing the angle of entry of knives into the soil will give the opportunity not to change the magnitude of the radius and angular velocity of the rotor which determine the energy performance of the loosening and separating device.