The results of experimental researches to determine the working indicators of the New Holland TS-5060 combine for soybean crop harvesting are given. According to the results of performed experiments to determine the working indicators of the New Holland TS-5060 grain harvester in soy bean harvesting process, the main time yield of the harvester combine was determined at 1.4 hectare/hour, the grain yield was defined at 96.5 per cent, and the loss in the combine thresher unit was at 0.6 per cent, it was found to be at the level of demand, however the grain loss and grain damage on the combine harvester were slightly higher than the specified requirements. That is why, it is recommended to use the number of revolutions of the combine pick-up reel in the range of 25-30 rpm, the number of revolutions of the threshing drum in the range of 750-800 rpm. Average square deviation and variation coefficient of these indicators are shown in following tables.

GIS technology based on real-time smart devices, including GPS devices and sensors will be widely used in agricultural technology. Therefore, this technology is being expected in crop harvesting process. One of the most important processes in soybean cultivation is the efficient use of combines and harvesting without loss of harvest. The grain harvester combine Dominator-130 equipped with GPS receiver and grain level sensor was researched in harvesting the soybean. According to results of experiments, during the harvesting of soybean the grain cleanness in a tank of the combine harvester Dominator-130 made up 95.9 per cent, grain loss in a thresher of combine made up 0.7 per cent, these indexes answer to the demands, however in a reaper of combine harvester the grain loss and damaging of grain were higher than demand. Therefore, it is important to define the optimal technological parameters and working regimes that give opportunity to decrease the loss of grain in the reaper of combine and damaging of grain in the thresher of combine for harvesting the soybean.

In Uzbekistan, soybean is planted as a main crop in early Spring and as a follow-up crop after wheat in Summer. In the conditions of Uzbekistan, the height of soybean grown as a main and repeated crop is 63-99 cm on average, depending on the species and cultivation techniques, the diameter of the stems in the lower part is 4.1-7.1 mm on average, and it is higher in “Oyjamol” and “Amigo” sorts planted in the early period, after wheat and it was lower in the Selekta-201 sort planted as a repeated crop. It was found that the pod placement height was higher than 15 cm in the “Oyjamol” and “Amigo” sorts, while it was 6 cm in the Selekta-201 species , and this indicated the need to set the combine harvester height lower. It was found that the average number of pods in one bush of soybean is 21.0 - 29.8 pieces, the number of grains in a pod is 2-3 pieces, and the ratio of grain to stem is in the range of 1:1 - 1:1.8. This showed that the “Oyjamol” and “Amigo” species planted in the early periods have more grain and stem content than the Selekta-201 sort planted as a repeated crop.

Soybean crop elements are in the form of pods, which form from the lower part of the plant, and at high mowing heights, they may be left unharvested and loss. For this reason, it is important to correctly determine the height of harvesting soybeans. According to theoretical calculations, it was determined that when harvesting soybeans with a combine harvester, the harvesting height of the combine harvester should be set at a height of 5 cm. In experiments, when the harvesting height of the combine harvester was changed from 5 cm to 20 cm, the damage in the form of spilled pods and grain due to the effect of the motor wheel was in the range of 0.34 - 0.48 per cent, and the damage of the grain in the harvester was in the range of 1.05 - 1.23 per cent. In the experiments, unharvested pods were not observed at 5 and 10 cm mowing height, at 15 cm mowing height, such grain failure was 0.83%, and at 20 cm mowing height, it increased by 2.5 times to 2.08%. According to the results of the experiment, the productivity of the combine harvester at 5 and 10 cm harvesting height was relatively low, but the total grain loss was in the range of 1.59–1.67 per cent and did not exceed 2 per cent specified in the requirements.

This article devotes to the formation of the layout of aggregate machines by compiling the process algorithm design.