Justification of a repairs resourcew of soil-cultivating tillage tools

Abstract

The interaction of blades of soil-cultivating movable operating elements with soil and weeds’ roots can result in wear of cutting blades. The length of path can express the magnitude of wear in exploitation process. The increase of cutting blade wear leads to the increase of draught resistance of the unit, which in its turn results in increase of power consumption necessary for the process. Let us take that the cost of claw restoration does not depend considerably on the level of blades’ wear. Than by operating increase, restoration costs, concerning the unit of the path will decrease. That is why we expect that there is such operation value where the total exploitation and restoration costs will be minimal. Such operation will be optimal. Exploitation and qualitative index depend on the magnitude of wear of movable operating elements. The article represents sequentially the materials of theoretical research as to the magnitude of wear of movable operating elements on the energy loss and the quality of manufacturing operation. The analyses of the total costs of claw restoration and shift resistance were made. In addition, the analysis of costs of inputs for additional expenditure of energy to restore soil-cultivating movable operating elements helped to determine the analytical dependence on basic indexes. The analytical research justified and described the mathematical prediction model of optimal overhaul operation time of soil-cultivating movable operating elements.