Machinery & Energetics

In the article methodology of expansion of longevity of functional systems of agricultural equipment is described with the use of biological materials. Examining the functional systems of modern tractors and agricultural machines, as complex technical systems that are apt to the different types of failures, we offered models of reliability, that allow in statistical data of work on the failure of their elements to get the actual indexes of rationed resources for technical requirements. An agricultural mechanism consists of the set of difficult functional systems, that is subdivided into unresisted, reserved, refurbishable and unrefurbishable. On the certain example of the functional tractor’s system, working on biological materials we realized one of basic principles of increasing longevity of the technical systems, essence of which lies in determination and removal of "weak link". In processing of experimental data the methods of mathematical statistics, in particular statisticians of casual processes, was used. For the construction of mathematical description of process of change of parameters followed the theory of casual functions and theory of chances, taking into account principles of functional cooperations for approach of the systems and using the theories of reliability. Methods of theory of design of the difficult functional systems are a base for forming of simulation model of process of technical exploitation of machines. In the process of exploitation of agricultural technical parameters that characterize the capacity of knots and aggregates on the whole change from the wear of details and violation of impermeability.

agricultural equipment, reliability of functional systems, design, coefficient of readiness, parameters of distribution, probability of faultless work, middle resource