Design and rationale for parametres of the seed-fertilizer seeder coulter for subsoil broadcast seeding

Abstract

For sowing grain crops on stubble, stubble seeders with tine coulters are used, which perform technological operations in one pass. However, they do not meet the requirements of the agricultural machinery to ensure an even distribution of seeds in the sub-spear space. The subsoil no-drill planting creates the most favorable conditions for growth and development of cultivated crops and at the same time, grain crop yields are increased on average by 10…30%. Using no-drill planting, seeders equipped with spear coulters with spreaders for no-drill subsoil seeding provide the best quality and distribute the seeds evenly over the field. The article proposes the original design of the seed drill coulter for no-drill planting, which provides an even seed distribution over the feeding area. As a result of the theoretical researches the optimal parameters of the diffuser for the grain drill coulter are determined and the dependence between the unevenness on the test parameters of the diffuser and the height of the pendulum spreader, the base diameter are obtained. The purpose of this research is to develop the design and rationale of parameters of the grain drill for subsoil no-drill planting, the use of which will reduce the uneven distribution of grain crops seeds or mineral fertilizer granules.

Development of the design and substantiation of the parameters of the working body for digging the roots of sugar beet

“…Expression (13) shows that the height of the thorn depends on the radius of the cylinder and half of the average taper angle of the root crop (figure 5) For the accepted value of the radius of the cylinder of the active fork of 0.036 m and half of the average taper angle of the root crop of 10-16 °, the height of the spike, calculated by expression (13), will vary from 0.5 to 1.5 mm. Considering that the calculation was carried out for an absolutely rigid cylinder and spikes, the height of elastic spikes, equal to 5-7 mm, adopted in the design of the working body, is justified.…”

Study of the tractive resistance of the no-till planting section

“…1). Thus, to determine the diameters, the requirements fors ensuring the agrotechnical passing ability of the section should be used, according to which the minimum allowable diameter of the balancing and press wheels can be determined by dependence (7):…”

“…where D c is the diameter of the soil clod (0.10...0.12 m); φ 3 , φ 4 is the angle of friction of the soil clod on the soil and the rim material, degrees (φ 3 +φ 4 =55...65 o ). Taking into account the calculated values of the tractive resistance and the calculations of the minimum allowable diameters using the ratio (7), the values of the diameters D 2 and D 3 should be selected from the range of 0.30...0.40 m.…”

“…These are generally combined sowing sections simultaneously performing several heterogeneous operations: cutting the upper compacted soil layer, furrowing, laying the seed into the soil, and seeding down [4,5]. Taking into account the substantial variety of physical and mechanical properties of soil, the condition of the agricultural background, and the planned seeding depth necessary for the above operations, various sowing sections significantly differ from each other in design [6][7][8][9][10].…”

Theoretical prerequisites for improving durability of fixed rolling bearing joints restored with anaerobic

“…The durability of the cured adhesive under cyclic loading can be estimated by the number of deformation cycles to failure [9,8,10].…”