Analysis of change in the state of hydraulic drive of machines while in operation according to the diagnostic results

Abstract

Technical diagnostics is a sphere of knowledge embracing theory, methods, and means of de ning the technical state of the objects. It is necessary for provision of security, functional reliability, and e ciency of the technical object operation, as well as for reduction in the costs of technical maintenance and the idle time losses caused by failures and premature shutdowns for maintenance. The objective of this paper is to analyze the change in the state of hydraulic drive of machines in operation according to the diagnostic results. In order to achieve the set objective, the authors used various experimental methods. The paper considers mutual in uence of maintenance and technical diagnostics of hydrostatic drives of construction, track, and some other mobile machines. It is shown that introduction of technical diagnostics allows transferring from the system of planned preventive repairs to the system of servicing the machines based on their actual technical state, which helps in completely using the resource of a series of expensive aggregates. The authors described several basic characteristics of change in the volume e ectiveness of the hydraulic sets in operation. (P.A. Sorokin); kv119@yandex.ru (V.A. Karpychev); vagon-7@yandex.ru (K.A. Sergeev)