In conditions of waterlogged soils, it is recommended to harvest using caterpillar combine harvesters. One of the most popular models today is the «Vector 450» combine harvester. It has proven itself among agro-industrial complex manufacturers as reliable, and the caterpillar track, in addition to high cross-country ability, ensures smooth movement over the field surface. The presence of a soybean header during soybean harvesting allows copying the relief and cuts plants as low as possible. Determination of quality indicators of soybean harvesting is an extremely time-consuming process and depends on a large number of parameters (factors). The article proposes a model for computing the header losses as well as a solution method using a set of independent dimensionless groups. As a result of the analysis of the presented model, experiments were carried out, showing that the total amount of grain losses during harvesting using a soybean header installed on a caterpillar combine harvester would be 5.46 %. This amount of losses will occur if the harvesting speed does not exceed 7 km/h, the reel rotation speed is 20 rpm, and the average cutting height of plants is 5-7 cm.

Lontseva Irina A., Soboleva Natalya V.

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