The principle of identity of conditions for zonal tests of grain harvesters
https://doi.org/10.26898/0370-8799-2020-3-9
Abstract
The paper presents the analysis results of the methods applied to comparative tests of combine harvesters for threshing grain crops in various climatic zones of Russia. In the USSR, in accordance with the current GOSTs, machine testing stations carried out comparative tests of combines during threshing grain crops with a yield of 4 t/ha by direct combining method in the phase of full ripeness of grain, but no later than 7 days after its onset. At the design stage, the throughput of a combine harvester is calculated taking into account the design parameters of the working bodies of the combine, engine power, thresher width, specific power per unit of throughput, hopper volume and other factors. The classification of combines according to design parameters does not characterize their potential functionality and work efficiency under production conditions with significant fluctuations in the yield of grain crops. It is necessary to comply with the main principle of comparative tests of combines – the identity of their operating conditions. If this principle is violated, it makes no sense to analyze the results. It is necessary to substantiate the methodology of comparative tests of combines in various climatic zones of the country. Given the different yields in certain zones of Russia, especially in the Siberian region, it is necessary to determine not only the nominal throughput for the rational use of the harvester, but also to what extent it can vary depending on harvesting conditions. A technological passport is needed for each combine, which will allow to quickly develop an operation process chart for threshing grain crops in relation to a specific field and taking into account yield and other production efforts. Operation process charts, unlike technological passports, determine the task for performing specific work, subject to technological modes, that ensure high quality products by direct combining and swath harvesting methods with rational loading of the combine thresher. They help to identify actual and estimated cost of grain, taking into account the need in combines and combine operators.
About the Author
G. E. Chepurin
Siberian Federal Scientific Centre of AgroBioTechnologies of the Russian Academy of Sciences
Russian Federation
Russian Federation
Professor, Corresponding Member of the Russian Academy of Sciences, Doctor of Science in Engineering, Head of Research Division
PO Box 463, SFSCA RAS, Krasnoobsk, Novosibirsk Region, 630501
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Review
For citations:
Chepurin G.E. The principle of identity of conditions for zonal tests of grain harvesters. Siberian Herald of Agricultural Science. 2020;50(3):83-93. (In Russ.) https://doi.org/10.26898/0370-8799-2020-3-9
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