DETERMINATION OF OPTIMAL TYPES AND PARAMETERS FOR WORK TOOLS OF RVP-4 SOIL RIPPER-LEVELER
An article is considered the results of field tests of an experimental sample of the ripper – the land leveler in the conditions of the South of Kazakhstan on operation for presowing small ripping and land planing. The implement was completed: a front leveling board; centre hoes; the rear leveling device (the spike-tooth spring harrow); disk and rod roller. The testing results showed that the implement is efficient. Quality indicators of tillage were satisfactory. The comparative efficiency of work of the disk and rod roller with a step of rings of 50, 100, 150 and 200 mm was determined. The disk roller provided the best quality indicators of tillage in comparison with rod roller. Stable functioning of the combined implement at satisfactory quality indicators of tillage provided by the rod roller with the step of rings of 100 mm. The maximum leveling of the soil surface was observed at an angle of inclination of the leveling board 750. The soil was not enough for leveling at the smaller angle of inclination by the raised board, and an excess of soil was formed at a greater inclination angle, which led to the formation of the furrows after the going the hoes. There were determined on the basis of the conducted studies, the optimal types and parameters of the working elements of the ripper-land leveler, providing the qualitative performing of the operations for presowing soil preparation. The performance specification and drawing documentation for the prototype were developed on the basis of the received research results.