Combing the standing crops with preliminary separation of loose grains

Victor N. Ozhereliev; Victor V. Nikitin; Natalia V. Sinyaya; Michael Y. Chaplygin; Tatyana O. Fedina

doi:10.17816/0321-4443-100849

Tractors and Agricultural Machinery ›› 2022, Vol. 89 ›› Issue (1) :73 -79. DOI: 10.17816/0321-4443-100849

Economics, organization and technology of production

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Combing the standing crops with preliminary separation of loose grains

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Abstract

SUBJECT OF THE STUDY: Is the process of preliminary separation of loose grains from combed grain heap on the slatted bottom of the feed elevator of a combine harvester.

AIMS: Is an efficiency evaluation of the combed grain heap separation on the slatted bottom of the inclined chamber of a combine harvester in the field and to compare the degree of crushing of free grain depending on its supply to the threshing device or directly to the cleaning system.

METHODS: All studies were carried out on winter wheat of the Moskovskaya 56 variety with a yield of 30 c/ha. Plant height varied within 0,6–0,9 m with a grain ripeness of at least 98% and a moisture content of 14%. The serial grain header ZHO-5 «OZON» manufactured by PJSC «Penzmash» was aggregated by the Niva-Effect combine harvester with a constant speed of 8 km/h and a stripping cylinder speed of 485 min^-1. The field experiments were divided into two stages. The first series of experiments was devoted to evaluating the efficiency of preliminary separation of combed grain heap on the slatted bottom of the experimental feed elevator. During the second series of the experiment, grain was harvested with a serial feed elevator without its preliminary separation.

RESULTS: According to the results of the first series of studies, it was found that the passage of loose grain through the holes of the slatted bottom of the inclined chamber is 91,6%. At the same time, grain crushing in the feed elevator did not exceed 0,5%, and in the bunker – 1,75%. During the operation of the combine with a serial feed elevator without preliminary separation of the combed grain heap, the crushing of the bun-ker grain was within 5,25%.

CONCLUSION: The practical implementation of such a technical solution makes it possible to 3 times the grain crushing in a bunker by the working bodies of the threshing machine.

Keywords

combine harvester / combing / feed elevator / slatted bottom / preliminary separation of combed grain heap

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Victor N. Ozhereliev, Victor V. Nikitin, Natalia V. Sinyaya, Michael Y. Chaplygin, Tatyana O. Fedina. Combing the standing crops with preliminary separation of loose grains. Tractors and Agricultural Machinery, 2022, 89(1): 73-79 DOI:10.17816/0321-4443-100849

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