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MULTI-OPERATIONAL TILLAGE UNIT

The use of single-operation and double-operation soil-cultivating tools for main and pre-sowing tillage leads to an increase in agrotechnical terms and the production cost. To combine several operations and increase the economic efficiency of tillage, a multi-operation tillage unit has been developed. The proposed unit is designed in such a way that the working tools are fixed on the racks of the main frame and are located with an overlap on the rear frames. The working tool is a cultivator center hoe, under the wings of which there are slitters mounted on three plates with grooves, corresponding to the parameters of the center hoe wings. One slitter is fixed in the center of the center hoe, and two – on the sides under the wings. Removing the central slitter doubles the distance between the slitters. The authors decided to make a slitter in the form of an arbitrary trapezoid with sides having a different inclination angle to the horizontal surface. It has been experimentally established that the optimal ratio of the frontal area of the slitter to its height is 1:10. The soil-cultivating working tool with the changing angle of its location by 180° and the changing curvature of the cutting edge of the working surface of the slitter can be used in different soil conditions and features the increased service life. It is recommended that pre-sowing cultivation be carried out to a depth of 10 cm. Performing four operations in one cycle by a tillage device: slitting, surface tillage with weed control, the final phase of tillage and surface compaction – ensure the increased economic efficiency of the entire process.