Loosening of sub-arable soil layers is the most energy-intensive process. The use of a paraplau type soil dredger for ploughs, especially front-end ploughs, helps to reduce the energy consumption for loosening. The study aims to theoretically determine the traction resistance of a soil dredger with an inclined strut of the "paraglau" type and justify its main parameters. In theoretical studies, it is assumed that the destruction of the soil under the influence of the dredger bit occurs by separation. The study uses the basic principles of mathematics, theoretical mechanics, and agricultural mechanics. The total traction resistance of the soil dredger was determined as the sum of the resistance to movement in the soil of the bit and the stand with the knife. The force with which the bit acts on soil layer, required to overcome soil resistance to the introduction of the bit; to the separation of the chips from the array; to overcome the friction forces caused by gravity and bending moment and dynamic pressure of the chip due to the force of inertia. An analytical expression is obtained for determining the traction resistance of soil dredgers operating under blocked cutting conditions, depending on its design, technological parameters, and soil properties. As a result of theoretical research, it was found that the rational values of the main design parameters of the paraplau type dredger are in the following ranges: the angle of the bit crumbling 15-170, the angle of the rack in the transverse-vertical plane 40-450, the angle of the rack in the longitudinal-vertical plane 16-210, the width of the bit 5-8 cm.
Volume 12 | 07-Special Issue
Pages: 2154-2161
DOI: 10.5373/JARDCS/V12SP7/20202336