Machinery & Energetics

One of the main directions of increasing the efficiency of agricultural machinery operation is the study of technical readiness when planning the main stages, objects and scope of maintenance and repair works. Existing systems of maintenance and repair of machinery do not fully take into account operating conditions, characterized by a certain group of factors. The problems of individual approach to the estimation of the technical state and prompt correction of the maintenance and repair modes of machines under service conditions remain actual. The purpose of the presented article is to study the influence of operating factors on the technical condition of agricultural machinery in the process of its use. For example, as an object of research, the means for preparation and distribution of fodders used in cattle breeding are taken. The method of a priori ranking and the method of evaluation of non-accidental agreement of experts are applied in the work. The classification of operating conditions, taking into account their influence on the change in the technical condition of MPDF is presented. From the totality of the presented conditions the factors influencing the operation of MPDF have been determined. Based on the results of the expert survey, the data for preliminary ranking of the factors were collected. The sum of ranks of all experts was determined for each factor. Four factors were found to have a predominant influence on the technical condition of the MPDF: reliability of the vehicle design; professionally important qualities of the personnel; organizational and technological factors; intensity of operation and loads on the working equipment. Using the concordance coefficient the degree of agreement of the experts' opinions was estimated. The results obtained by a priori ranking can be considered satisfactory and adequate. Testing the hypothesis of non-randomness of the agreement of experts according to Pearson test indicates the significance of the coefficient of concordance, significant similarity and non-randomness. The results of the study of the influence of operating factors on the technical condition of the MPDF have received practical confirmation and use in production conditions.

machine, technical condition, expert survey, a priori ranking, operating conditions, factors, rank