Dakhno O. Improving efficiency of hydraulic excavator creating of telescopic working equipment

Object of research - the creation of the telescopic working equipment single-bucket hydraulic excavator and its interaction with the soil environment. The aim of dissertation: improving the efficiency of single-bucket hydraulic excavator by forming different variants of telescopic working equipment and their evaluation. Methods: theoretical and experimental. Theoretical and practical results: the model of the formation of the telescopic working equipment; The dependence of the operational performance of the changes being developed soil volume and model for integral calculus of this volume; improved system of indicators to evaluate the effectiveness of new designs which assessed telescopic working equipment; developed a mathematical model to determine the optimal dirt chip thickness allows to obtain the optimal trajectory of digging; experimental and analytically determined rational design parameters of the telescopic working equipment; developed and scientifically based design solutions for operating telescopic equipment. Scientific novelty: for the first time developed a model of the telescopic excavator working equipment, which allows to obtain the correct combination of the traditional and the telescopic elements in the new structure; first established the dependence of the operational performance of the changes being developed at the bottom of the soil volume in the period of movement of the excavator; a system of indicators to evaluate the effectiveness of new designs has been further developed and expanded set of indicators that takes into account the effect of changes in the geometric parameters of the telescopic excavator working equipment; first developed mathematical models for the integral calculation of the theoretical amount of digging ground telescopic excavator working equipment first developed a mathematical model to determine the optimal thickness of the cut chips in terms of sustainability and the implementation of best effort on the cutting edge of the bucket; Experimental regression models of the interaction of soil with telescopic working equipment; identified rational parameters of the telescopic sections of the telescopic excavator working equipment, obtained on the basis of theoretical and experimental studies. Degree of implementation: used "PSACEA" in conducting research work on a specialty 7.050503; methods for determining the performance and evaluation implemented in the company OOO "Ukrgidrobudproekt"; putting into operation of the excavator with a telescopic working equipment LLC "Atombudnaglyad" in the Dnipro has provided an annual economic impact of $ 203200.00 UAH. Scope of use: excavating machinery.