Analytical model of availability and operating life of combine harvesters
DOI:
https://doi.org/10.31548/machenergy2019.03.173Keywords:
system availability, efficiency, food processor.Abstract
In the development of technological maps of harvest is not considered the life of the processor and its technical condition. Not counting the previous period of operation of combines and probable values of indicators of technical condition leads to significant errors in the prediction of the timing of the harvest. For machines brief seasonal the most important indicator of reliability as remontoprigoden systems are statistical and the probable values of the developments between regular failures and downtime on the bounce. A comprehensive indicator of health recovery systems (objects) using the coefficients of technical readiness Kg, which is calculated as the ratio of mean time between failures for mean time between failures plus the average idle time for elimination of failures.
The author presents in the planning of harvesting time necessary to consider the life of the harvesters and to amend the performance indicators taking into account the likely decrease in this indicator of technical condition through the availability.
The article identifies that the specific decrease in productivity per unit reduction of the coefficient of readiness for combines is thirty tons of early grain threshing.
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