This paper applies Markov's theory of stochastic processes (Graph theory) to identify the probability of the machine-tractor aggregate being in each of the machine states adopted by the model. It features a graph of the states of a machine-tractor aggregate (Machine-status) operating in plant growing that allows us to determine the probability of the aggregate being in any of the states considered as basic. It proves that with the increase in the level of reliability of the aggregate, in this case its flawless performance, represented by the non-intermittent operation time indicator (time for trouble-free work), the probability that the aggregate will be in a functional state increases.
The harvesting is one of the most difficult and responsible operations in the crops growing. It should be done in the short term, in order to prevent losses of production. This requires efficient use of the operating time of the combine harvesters. A study of the working time of a combine harvester was carried out throughout the whole period of wheat harvesting. Unloading of the hopper is carried out when the combine harvester is stationary. It was found that the time to prepare and finish work was 24.754% of the total working time. It includes time for maintenance of the combine harvester, the time for coupling and uncoupling of the combine header, the time for transport of the combine harvester to and from the field, and the time for moving inside the field. It was found that the time of harvesting is 53,158% of the working time. Non-productive time in the field represents 22,088% of the total working time. It includes the time for the movement of combine harvester to the place of unloading and vice versa, the time for waiting before unloading, the unloading time, the time for making turns, the time for updating of the technological settings, the time for searching and troubleshooting. For unloading of grain tank is lost 14.842% of working time. On the basis of the study, an algorithm for the operation of a combine harvester was made when unloading in stationary.
The harvesting is one of the most difficult and responsible operations in the crops growing. It should be done in the short term, in order to prevent losses of production. This requires efficient use of the operating time of the combine harvesters. A study of the working time of a combine harvester was carried out throughout the whole period of wheat harvesting. Unloading of the hopper is carried out when the combine harvester is stationary. It was found that the time to prepare and finish work was 24.754% of the total working time. It includes time for maintenance of the combine harvester, the time for coupling and uncoupling of the combine header, the time for transport of the combine harvester to and from the field, and the time for moving inside the field. It was found that the time of harvesting is 53,158% of the working time. Non-productive time in the field represents 22,088% of the total working time. It includes the time for the movement of combine harvester to the place of unloading and vice versa, the time for waiting before unloading, the unloading time, the time for making turns, the time for updating of the technological settings, the time for searching and troubleshooting. For unloading of grain tank is lost 14.842% of working time. On the basis of the study, an algorithm for the operation of a combine harvester was made when unloading in stationary.
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