Harvesting Lupinus albus axial rotary combine harvesters

Aldoshin, Nikolay; Didmanidze, Otari N.

doi:10.17221/107/2017-rae

Cited by 30 publications

(11 citation statements)

References 1 publication

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“…Therefore, after threshing the grain mass with combine harvesters [3,4,5], grain heaps contain poisonous ergot sclerotia in addition to grain, organic and mineral impurities [6,7,8]. Therefore, to obtain grain suitable for food, technical and seed purposes, it is necessary to clean the grain heap, the task of which is to isolate all impurities, especially toxic ergot.…”

Section: Introductionmentioning

confidence: 99%

Influence of the angle of the bath bottom inclination in ergot isolation device on grain immersion in a liquid

2020

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For the mechanization of the allocation of toxic ergot from the rye seeds in a wet way, the urgent issue is the development of a device containing a bath with an aqueous solution of salt. The aim of the study is to determine the influence of the angle of inclination of the bottom of the bath on the rate of immersion of grains in the fluid of the device for separating ergot from rye seeds, which will ensure the efficiency of the process. Theoretically, we consider the movement of individual rye grains along the inclined surface of the bottom of the bath of the ergot extraction device. Rye grains have a density ρz = (1.2...1.5)·103 kg/m3, a length lz = (5.0. 10.0)·10-3 m, a width b = (1.4...3.6)·10-3 m, and a thickness δ = (1.2 3.5)·10-3 m. Geometric models of these grains are presented in the form of cylindrical and spheroidal grains. The movement of grain on the surface of the bottom of the bath of an ergot extraction device is considered at angles of inclination α = 27, 30, 40, 50, 60, 70, 80, and 90 degrees by the methods of mathematical modeling, classical mechanics using the laws of hydrodynamics. It was established that the angle α of the slope of the surface of the bottom of the bathtub to the horizontal should be taken at least 650, at which accumulation is excluded due to the rapid rolling of the grain and a decrease in the thickness of its layer.

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Section: Introductionmentioning

confidence: 99%

Influence of the angle of the bath bottom inclination in ergot isolation device on grain immersion in a liquid

2020

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“…Above analyzed experiments showed that, combine harvester should be used at the suitable working regimes depending on the sort of crop, yield and grain moisture. As if like these recommendations were suggested by Pristavka and Aldoshin [19][20][21].…”

Section: Resultsmentioning

confidence: 97%

Wheat harvesting by combine with GPS receiver and grain sensor

et al. 2021

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This research describes the result of study and analyze the working process of the harvester combine with GPS receiver and grain level sensor in wheat harvesting. GPS receiver and grain level sensor showed that the combine harvester was working with what level of velocity in the real time regime and how much grain was being uploaded into grain tank. According to results when the yield increased from 2.62 t/ha to 6.22 t/ha, because of decreasing the work-velocity of the combine harvester, the work efficiency of the combine harvester decreased from 1.96 ha/hour till 1.30 ha/hour, and grain loss rose from 2.03 per cent till 3.76 per cent. In the field where the weeds had covered 16.8 per cent, the work efficiency of the combine was 1.74 ha/hour, in another field where weeds level was 56.7 the work efficiency of the combine decreased almost 1.7 times, made up 1.07 ha/hour, the grain loss was observed that it increased from 2.1 per cent till 7.42 per cent. When the moisture of the cereal decreased it was defined that the combine work efficiency increased, however the rate of grain loss in the header rose too.

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“…Currently, grain production is mechanized. Harvesting is carried out by combine harvesters [3,4,5]. After threshing the grain mass with these combines, due to the imperfection of their cleaning mechanism, the grain heap contains grain, organic and mineral impurities, as well as harmful impurities, which include poisonous ergot sclerotia [6,7,8].…”

Section: Introductionmentioning

confidence: 99%

Parameters of the seed output device of the ergot isolation machine

2021

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Grains of rye, wheat, barley and oats are often infected with poisonous ergot fungi. Therefore, it is necessary to clean the grain from harmful impurities. Modern machines do not provide the isolation of ergot sclerotia from grain due to the closeness of their properties in terms of air flow rate and linear dimensions. Cleaning seeds from ergot sclerotia, which have a density lower than the density of the grain, is possible in an aqueous solution of salt. When developing such a machine, research is required to study the residence time of grain in an aqueous salt solution. Grains are considered in the form of a transverse cylinder and an elongated ellipsoid of rotation with numerical values of the parameters: density ρz = 1.2…1.5∙103 kg/m3, length lz = 5.0…10.0∙10-3 m, width b = 1.4…3.6∙10-3 m and thickness δ = 1.2…3.5∙10-3 m. Theoretical studies were carried out on the basis of methods of mathematical modeling, classical mechanics using the laws of hydrodynamics. It was found that when using in the machine for the isolation of toxic ergot sclerotia from the grain of an aqueous solution of salt with a density ρzh = 1000…1150 kg/m3 and a height h1 = 0.35…0.60 m in a bath, the total time ttotal of seeds residence varies within 7.6…18.8 s. During this time, the seeds are moistened superficially, to eliminate which it is enough to blow them under the pressure of atmospheric air.

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Harvesting Lupinus albus axial rotary combine harvesters

Cited by 30 publications

References 1 publication

Influence of the angle of the bath bottom inclination in ergot isolation device on grain immersion in a liquid

Influence of the angle of the bath bottom inclination in ergot isolation device on grain immersion in a liquid

Wheat harvesting by combine with GPS receiver and grain sensor

Parameters of the seed output device of the ergot isolation machine

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