Khozhylo M. Efficiency promotion of the excavation-transport engine of continuous operation with cutting-projective working body

The object of study - improving workflow efficiency earth-moving machine of continuous operation. The subject of research - cutting-propelling working body. The study hypothesis is based on the possibility of increasing the efficiency of workflow Earthmovers continuous through the simultaneous continuous digging screw with a knife and transportation outside of concentrated flow through throwing. Research methods. Theoretical studies were carried out using the theory of cutting ground-based static granular media, theoretical mechanics, differential and integral calculus, experimental - using methods of physical modeling workflows earth moving machinery, stand equipment, developed by the author and the methods of mathematical statistics. Theoretical and practical results: technical studies and experience of using earth-moving machine with a continuous cutting-propelling working body for the development of layered soil, formed projectile design cutting-working body, which allows simultaneous cutting and ground transportation at the expense of throwing; implemented method the creation and calculation of cutting-propelling working body, as well as in developed technical documentation for the manufacture of the equipment and the transfer of its SMBO "Ukrspetsekskavatsiya" and LLC "Road-building office number 8." Scientific novelty: for the first time revealed the interaction pattern of cutting-propelling working body of the soil, which is in the axial and radial movement of soil while simultaneously throwing his concentrated flow outside the operating authority; discovered supercritical mode of cutting-propelling working body at which the truncated ground transportation in full by throwing and determined frequency of rotation of the body within n = 90-140 m-1 at the working body diameter D = 0,6-1 m installation angle of the transport surface, which must be greater than the angle of friction to achieve maximum initial velocity throwing soil concentrated flow beyond the working body in full; established a rational ratio of diameter to turn cutting-propelling working body D / T = 0,6-0,75, which minimizes the power and energy performance of workflow earth- transport vehicle continuous due to the free digging thin shavings and reducing energy consumption to overcome the frictional forces on the protective housing and transport surface when thrown. The degree of implementation: Results of the thesis used in the practical activity of "Road-building office number 8" SBMO "Ukrspetsekskavatsiya" as well as the department of building and road machines PSACEA.