Machinery & Energetics

The article defines the total aggregate losses for the maintenance of groups of combines with a threshing capacity of more than 9 kg/s and various seasonal loads. It is established that the minimum cost is about 800 ha per harvester per season. The optimal number of maintenance links for small (150 ha) and large (>900 ha) developments for combine harvester is more than doubled compared to all grain harvester combines in groups. Analysis and comparison of SMO characteristics for stable and unstable operating modes has shown that the mutual transition for grain harvester combines group lasts from 4 hours (20 combines) and up to 8 hours (1-5 combines). Taking into account the SMO model and the proposed method will allow obtaining more accurate characteristics of the QMS: waiting time in the queue, queue length and the like. The value of the total total losses at 1 hour of operation differs by a factor of almost 5 in comparison with the steady-state regime.

optimization, mass maintenance system, grain harvester combine, periodicity of maintenance