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A progressive direction in the development of mechanization for pre-sowing tillage is the use of tillage machines or aggregates with combined working bodies, which make it possible to combine several operations in one technological process. The subject of the study is the energy performance of the unit with combined working bodies. The object of the study is the OKP-7N cultivator intended for pre-sowing and other types of cultivation to a depth of 3 to 15 cm. When performing the work, experimental studies were used using the interaction of working bodies with the soil. The processing of the field section was carried out in the II, III and IV gears of the tractor with the maximum fuel supply. The speed of movement of the unit on the indicated gears was determined in triplicate, the depth of tillage was kept constant at the level of 0.15 m. cultivator. When the unit was operating in the fourth gear of the tractor, the engine overload mode was observed, so the speed of the unit decreased even compared to the speed in the third gear, and the traction resistance of the cultivator was at the same level. The hinged connection of the cultivator without a blocker provides longitudinal copying of the field surface of the tractor separately, and separately of the cultivator, as a result, the traction resistance of the cultivator decreases by 8 ... 10%, the speed of the unit increases by 31%, when the tractor is operating in the rated load mode. [ABSTRACT FROM AUTHOR]

The use of direct sowing seeders, the sections of which consist of modules for local loosening of the soil and sowing, is most appropriate when growing grain crops. During the operation of the seeder, the wavy disk provides a strip grinding of the soil, in which the coulter system lays seeds. When preparing the soil for sowing, the degree of use of the total specific energy costs is about 16%. Therefore, significant savings in energy costs to produce crop production can be achieved by reducing the specific traction resistance of the working bodies of agricultural machines. When cultivating the soil, its individual particles or layers under the influence of a wavy tillage disk move in space, change their mutual location and the soil passes into another physical state. Its geometric shape has a very significant influence on the magnitude and direction of the forces of interaction between the soil and the tillage disk. The form of the tillage wavy disk is justified, the influence of the parameters of the experimental tillage disk on the energy indicators of its operation is determined. [ABSTRACT FROM AUTHOR]