Justification optimal operating parameters of the conveyor, which is the mechanism of the header for two–phase harvesting by batch method, taking into account the minimization of losses of grain

Abstract

The object of research is the conveyor, which is the mechanism of the header for two–phase harvesting by batch method. The aim of the research is to develop the design and technological process ofthe roll portion header, the most suitable for the conditions of arid climate with the justification ofits main operating parameters. In the conditions of the steppe zone of the southern Urals, a separatemethod of harvesting grain crops is more preferable. The analysis of the structures windrowers allowed todevelop a portion of the header. The technological process as a portion of the header includes two phases — mowing and subsequent accumulation of the grain mass on the conveyor, and then upload. The unloaded portions are joined with the stacked in the previous passage – this is how the roll strip is formed. This option of laying the roll can reduce the number of passes in the selection of about 4–5 times in comparison with the basic technology. This allows you to reduce the cost of selection and reduce the impact of heavy machinery on the soil. A special role in the work of the header plays a conveyor. It is established that the thickness of the layer of stems on the Reaper conveyor depends on theworking length of the conveyor and the speed of movement of the unit on the field, the density and diameter of the stalk, the density of laying on the conveyor.

Evaluation of the features of the methodology for substantiating the operational and design parameters of the harvester conveyor, which works according to the batch method

“…Методика исследований. Из работ, посвященных данной жатке [8][9][10], видна важность корректного подбора конструктивно-габаритных и режимных параметров ее транспортирующего устройства.…”

“…Однако принципиального изменения сути стандартной методики это не дает, что необходимо для нашего случая, поскольку, как отмечалось выше, одним из главных ее критериев является достижение определенных параметров валка, тогда как технология формирования порционного валка в своей основе подразумевает возможность корректировки его показателей по мере необходимости [1]. При этом суть расположения такого валка относительно его подбора принципиально отличается от классического варианта [9,10].…”

“…Оптимальные значения ширины транспортерной ленты -одного из главных и определяющих конструктивных показателей транспортирующего устройства -могут быть установлены исходя из производительности транспортера. Данный показатель определяется следующим образом [10]:…”

Theoretical study of a sunflower harvester operation equipped with an auger reel

“…The stems that are not captured by the stripper knives 6 fall under the action of winding turns 7, which also tilt them to the center of the header bottom. As a result, it is possible to avoid a direct impact of the sunflower heads on the pipe shaft of the auger-reel and, thereby, the seed cast happens, followed by their throw out of the side header baffle 10 [14]. Such a technology of capturing the sunflower stem helps to reduce the acceleration of the heads' movement and the seed cast [6-7;10].…”

Justification of the parameters of the floating crop lifter when mowing crops

“…Harvesting plants involves cutting them at the required height and removing the plant mass for subsequent disposal or processing. Either green mass is removed from the cultivated area (mowers and trimmers are used to cut plants) or ripened plants with seeds (ripened plants are cut by the reapers, and the resulting heap of straw with grain must be threshed and separated) [1,2,3]. In agriculture, in crop production the main produced product is the grain mass [4].…”