Modeling the throughput capacity of threshing-separating apparatus of grain harvester’s combines

Rogovskii, I. L.; Martiniuk, D I; Voinash, Sergey; Luchinovich, A A; Соколова, В. А.; Ivanov, A.M.; Churakov, A V

doi:10.1088/1755-1315/677/4/042098

Cited by 6 publications

(4 citation statements)

References 16 publications

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“…Installed between the header and the feeder house, the activator consists of a body and a special beater with a comb that transports the biomass to the feeder house. The beater, equipped with an eccentric finger mechanism, combs the biomass and directs it to the feeder chamber [12,13].…”

Section: Methodsmentioning

confidence: 99%

“…In a number of studies [11][12][13], certain recommendations are given for adjusting the threshing apparatus, at different moisture content of the biomass. However, the researchers came to the conclusion that combinations of grain and straw moisture are possible, when it is impossible to meet the requirements for under-threshing and grain damage, at the same time by selecting adjustments to the threshing apparatus.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

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Optimization of the technological process of threshing combine harvester

Umbataliyev,

Smailova,

Toilybayev

et al. 2023

EEJET

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To improve the operational quality of paddy combine it was proposed to include additional innovative operations in plant process of pre-threshing preparation of rice biomass with anticipating seeds selection which increases seeds separation, reduces injuries, forms stable operation of threshing-separating device of combine harvester. Retrofit feeder house is a solution to ensure the stable uniform feed of assorted biomass into the threshing separation device. Equipped with tool package – harvester feeder house turned to the running control equipment for incoming flow of biomass. The movement of threshed heap inside the modified geometry of feeder house with tools effectively affect on caulis, panicle of rice – screed, and brings the biomass vibration mode i. e., lead to the dynamic separation of rice headed seeds to threshing rotor. Vibration (tossing) of biomass make it possible for free rice seeds pass through caulis to the bottom of feeder house. Development program of innovative driving devices of multifunctional rice seed harvester combine considered the development of preproduction explorational program ensuring the information on harvest loss during various rice harvesting, their separation between main harvester aggregates – collector, auger, elevator, threshing mill. It is proposed to combine, in a single complex, all the control parameters, subordinating their actions, into an active control device of the technological process, affecting the shapes of rolls formed from various varieties and yields of rice

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Section: Methodsmentioning

confidence: 99%

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Optimization of the technological process of threshing combine harvester

Umbataliyev,

Smailova,

Toilybayev

et al. 2023

EEJET

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“…However, the study is focused exclusively on the processes of sunflower separation. Work [5] simulates the process of grain heap separation. The capacity of the separation apparatus of the primary cleaning was thoroughly considered.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Proving the possibility to rationalize the process of seed materials separation with a vibro-pneumatic centrifugal separator using a theoretical model

Bredykhin,

Bogomolov,

Kis-Korkishchenko

et al. 2023

EEJET

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The object of research is the seed material and working bodies of a vibro-pneumatic centrifugal separator; the subject is their interaction. The established surfaces, which are the results of the simulation of the process of separation of seed materials in the vibro-pneumatic centrifugal separator, have a curve to the plane whose parameters are the speed of the air flow and the frequency of oscillations of the working surface. It is noted that this nature of the dependence of the purity of the «heavy» fraction of seeds on parameters of the separation process makes it possible to determine the rational ranges of these parameters, at which the maximum value of this characteristic is reached. Experimental simulation of the separation process in the vibro-pneumatic centrifugal separator of wheat, sunflower, and soybean seed materials under production conditions showed a high convergence of the results with the results of the simulation of the process under the same initial conditions. It was established that the correlation coefficients between the points obtained experimentally and obtained by simulation for the given results are in the range from 0.89 to 0.95. At the same time, the differences are the purity values of the «heavy» seed fraction, and not in the nature of its change due to changes in the parameters of the separation process. The expediency of using modeling when determining the rational values of the parameters of the separation process in the vibro-pneumatic centrifugal separator is noted. This will help increase the energy and resource efficiency of the equipment due to the absence of the need for experimental setup. The rational ranges of air flow speed and vibration frequency of the rotor of the vibro-pneumatic centrifugal separator for the separation of seed materials have been determined: wheat – 1.2...1.5 m/s; 4500...5100 cycles per minute; sunflower – 1.3...1.5 m/s; 4500...5000 cycles per minute; soybeans – 1.3...1.6 m/s; 5000...5500 cycles per minute

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“…Ряд работ получил наибольшее признание среди ученых 4 [11][12][13]. В результате исследований была уточнена терминология, предложены уравнения, проведено математическое моделирование при варьировании факторов и параметров обмолачиваемого материала, определены методы расчета параметров молотильных аппаратов, сформулированы требования к ним по потерям и дроблению зерна [14][15][16][17]. Стоит выделить исследования Э. И. Липковича и С. А. Алферова.…”

Section: обзор литературыunclassified

Dynamics of Fractional Composition of Grain-and-Straw Mass Being Threshed in the Threshing Mechanism of a Combine Harvester

Жалнин

Chaplygin

2022

Engineering Technologies and Systems

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Introduction. The article presents the results of theoretical and experimental studies of threshing and separation processes in the threshing mechanism of the combine harvester with a digital assessment of the fractional composition of the grain-and-straw material being threshed. The obtained data will allow detecting dynamics of fractional composition of grain-and-straw mass being threshed in the threshing gap of the threshing mechanism depending on its supply. Materials and Methods. The research was carried out on a special stand in the form of a separate unit of the combine threshing mechanism. Grain-and-straw samplers were installed under each threshing section. The mass feed was changed from 1.0 to 6.0 kg/s at a straw ratio of 1:1. The obtained data were approximated using a standard procedure. Results. There was determined the amount of grain and straw passed through the threshing section screen and the rest of grain and straw entering the straw separator depending on their initial amount. For each fraction, there were determined the ratio of straw mass to grain mass, the density and thickness of the grain-and-straw heap layer on the shaking board ahead of the grates and at the beginning of the straw separator keys. The dynamics of grain-and-straw separation was identified by scanning the length of the grains with the determination of the density and compression degree of the grain-and-straw mixture layer in the threshing gap. Discussion and Conclusion. It was found that in the heap of grain-and-straw passed through a threshing section, the ratio of straw mass to grain mass decreases from 0.46 to 0.27 and density increases from 60.1 to 84.0 kg/m3. In the heap of grain-and-straw that fell on the straw separator, the ratio of the straw mass to the grain mass decreases from 11.2 to 2.0, the density increases within a small range from 21.7 to 26.4 kg/m3. Thickness of the heap layer on the shaking board in front of the cleaning sieves varies in the range 0.25‒10.20 cm, and on the straw walker ‒ 2.2‒19.8 cm when changing the supply of the total mass for threshing from 1 to 6 kg/s.

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Modeling the throughput capacity of threshing-separating apparatus of grain harvester’s combines

Cited by 6 publications

References 16 publications

Optimization of the technological process of threshing combine harvester

Optimization of the technological process of threshing combine harvester

Proving the possibility to rationalize the process of seed materials separation with a vibro-pneumatic centrifugal separator using a theoretical model

Dynamics of Fractional Composition of Grain-and-Straw Mass Being Threshed in the Threshing Mechanism of a Combine Harvester

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