The results of a comparative assessment during the tests of the Acros 595 Plus and T-500 combine harvesters on agrotechnical and operational-technological indicators are presented. The research was conducted at one of the agricultural enterprises located in the southern zone of the Amur region. An analysis of the quality of the technological process is presented by the corresponding combines aggregated with ZhSU-900 harvesters. It is shown that these machines perform high-quality harvesting operations according to the main indicators in the range of operating speeds up to 6.3–6.7 km/h: from the condition of losses behind the harvester – no more than 3% and total losses behind the combine – no more than 4%. Differences were recorded in the level of actual total losses during harvesting (1.2% less for the T-500) and in the level of crushing of soybean grain (1.49% more for the T-500). This can be explained by the operators' failure to comply with the recommendations of the operational documentation on setting the operating parameters of the harvester and thresher for harvesting soybeans. The compared combine harvesters with drum threshers in the process of harvesting soybeans for seeds cannot ensure the quality of soybean grain that meets the requirements for seed material. The authors propose the creation of a soybean harvester based on the modernization of a combine harvester with a two-drum threshing scheme of the T-500 type, two-stream cleaning and an automatic control system for its parameters. Such a combine harvester will ensure the direct production of seed grain, which can be used for sowing without further work.

Lipkan Alexander V., Sakharov Vladimir A., Kuvshinov Alexey A., Kotenko Dmitry S., Smolyaninov Yuri N.

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