Course stability models of a wide-width tractor unit

Abstract

The purpose of the research is to provide for solving dynamic problems of course stability of a wide-width sowing and row-crop-tractor unit. For constructing a computational scheme for the generated problem applied the central finite-difference method with a second-order accuracy. When developing a machine algorithm, the fractional grid steps are converted by formulas and a vector equation is obtained. The results of scientific and practical research and testing to determine and evaluate performance of machine-tractor units (MTU) consisting of inter row spacing sowing and cultivators with four-wheel tractors were obtained. Studies on appropriateness of increasing coverage area of cotton units based on field size have shown that the shift productivity of eight-row units at planting was lower than that of four-row units when the field area was less than 3 hectares. When the field area was 3 hectares or more, the MTU’s productivity increased by 32–34%. A similar trend has been observed in the inter-row processing units. Field experiments have shown that it is advisable to maintain the existing four-row machine system on the basis of existing energy vehicles for 27-30% of cotton fields. Cauchy problem for finite-difference equations of dynamic problems of course stability of a wide-cut sowing and tilled-tractor unit was formed, in the form of algebraic equations. As a result, it was possible to build 6-, 8- and 10-row cultivator units based on four-wheel tractors.

Influence of tire internal pressure on soil compaction

“…A four-whееl traсtor has a high dеgrее of stability, and oреrating mass is distributеd among all four whееls. Thеrеforе, whеn thеy arе IOP Publishing doi:10.1088/1755-1315/1231/1/012009 2 usеd, it is рossiblе to rеduсе soil сomрaсtion and tirе loading, as wеll as fuеl сonsumрtion duе to thе usе of еxtеnsivе maсhinеry [17,18,19,20].…”

Research results on underground cotton irrigation through artificial pipes

“…Taking into account the above shortcomings, it is advisable to use water-saving technologies depending on the type of crop and soil conditions, i.e. shortening the length of the irrigation hoses, sprinkler irrigation, drip irrigation, watering by laying black polyethylene film on the hoses, and using portable flexible plastic pipes instead of watering cans [1,2]. If crops are irrigated using irrigation technologies, favorable conditions will be created for the mechanization of agricultural work at the same time as saving water and energy, labor force is required for irrigation.…”

Study on the development of a rotary soil softener

“…In Uzbekistan, consistent measures are being taken to develop the production of agricultural machinery, to increase the volume and variety of finished products for export, as well as to supply the agricultural sector with domestically produced machinery. However, the machines and devices created on the basis of these studies have achieved certain results [1,2] in agricultural production, there have not been enough scientific research works on the creation of combined technical tools for soil surface treatment [3,4], substantiating the parameters of their working bodies, and they have shortcomings from a technological and constructive point of view that are not widely used in production, and studies on their development and parameter justification have not been conducted enough. Field relief, soil type and physic-mechanical properties are the main factors in the selection of working bodies of soilcultivating machines and in evaluating performance of aggregates that process it [5,6,7].…”

“…Under the mechanical action of the aggregates, the organic matter decomposes and evaporates with moisture or is washed away by water. Therefore, the minimum processing method is widespread and is rapidly spreading around the world [3,14]. It is convenient to use combined machines that perform multiple operations on the same road to reduce machine crossing in the field [3,7,14].…”

“…Therefore, the minimum processing method is widespread and is rapidly spreading around the world [3,14]. It is convenient to use combined machines that perform multiple operations on the same road to reduce machine crossing in the field [3,7,14]. With this in mind, the use of a rotary crusher-leveler in conjunction with this combined unit chizel-cultivator is effective, aimed at the theoretical substantiation of their working bodies [4,15,16].…”