METHOD OF ORGANIZING MAINTENANCE AND REPAIR OF AGRICULTURAL MACHINERY PARTS

Abstract

Increasing the performance of machines within their useful life necessitates modernizing maintenance and repair strategies. To develop a method for organizing maintenance and repair of machine parts aimed at improving the reliability of agricultural machinery, the authors carried out an analysis of the U-shaped form of the failure rate curve. Two types of post-warranty service were considered. The study showed that the failures of machine parts observed while operating are of two types: failures of the manufacturer (determined by the quality of design, manufacture and installation, and characterized by the failure rate) and operational failures (determined by the service quality of machine parts and characterized by the distribution law of failures described by the Weibull distribution, the standard normal Gaussian distribution law or other distribution laws of random variables). The research yielded the characteristics of the life periods of the control objects. The authors determined and justified the law of resource distribution and the active area of control, and presented methods for their analysis and use in the maintenance and repair of machine parts. The proposed method of maintenance and repair, based on preventing the failures of machine parts through the use of post-warranty service, will improve the reliability of diagnosed machines.