JUSTIFICATION OF TECHNOLOGICAL AND DESIGN PARAMETERS OF COULTER
2017
A. K. Igamberdiev
About 80 percent of winter wheat is cultivated in cotton plants interrow spacings under the conditions of Uzbekistan. But commercial cotton cultivators for surface sowing of wheat into interrows are not equipped with special coulter. To create a new design of this tool for cotton plants row-spacings it is necessary to study their profile. The pilot field studies showed that soil bulldozing before a coulter increases at humidity of the soil less than 8-11 percent and hardness more than 1.6-2.0 MPas, and at humidity of 16-20 percent the building-up decreases. The depth of furrows in row-spacings should be 12-16 cm, nonuniformity in longitudinal sections is 3-5 cm for 14-18 cm optimum height of the soil layer at coulter operation. A geometrical form of a scoulter was designed, its technological and geometrical parameters are proved. For high-quality crops and formation of a seedbed the coulter should be 2-4 cm downward pulled. The optimum angle of the coulter wings placed in the longitudinal direction of the movement is equal 47 degrees, and between the wings it is 69 degrees. For row-spacings of 60 cm At the outer diameter of a seed tube of 3 cm, sowing depth of 5, a side spalling angle of 50 degrees 5 tines are recommended for row-spacings of 60 cm, and 9 units are optimal for row-spacings of 90 cm.
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