Theory of Movement of Machine-Tractor Unit with Trailer Haulm Harvester Machine

Abstract

Harvesting sugar and fodder beet tops is a complex technological process that requires the use of special harvesting machines. Trailed harvesters of different rows, which together with aggregate tractors form symmetric or asymmetric machine-tractor units, the movement of which in the horizontal plane is not always stable, are widely used. The purpose of this study is to determine the parameters of stable plane-parallel motion of asymmetric harvester machine-tractor unit based on numerical computer simulation of the obtained analytical dependencies. According to the results of the analytical study, the values of the amplitude and phase-frequency characteristics of the turning angle tractor’s oscillations were obtained. They reflect the reproduction by the angle rotation fluctuations of the haulm harvester machine in the horizontal plane. Calculations have shown that reducing the value of the input resistance coefficient of pneumatic tires of the driving wheels of the aggregating tractor increases its sensitivity to the action of disturbing influences. The greater the sensitivity, the closer the wheels of the power tool are to the attachment point of the trailed haulm harvester. In qualitative terms, increasing the speed of the machine-tractor unit from 1.5 tо 2.5 m∙s−1 leads to an undesirable increase in the amplitude-frequency response and desired increase in the phase-frequency response when reproducing its external disturbing effects in the form of oscillations of the angle of rotation of the harvester.

Investigation of the Energy Indicators for the Surface Treatment of Soil by a Harrow With a Screw-Type Working Body

“…The work Bulgakov et al, (2022), substantiates the practical possibility and expediency of using a screw-type working body in tillage, and the work Bulgakov et al, (2021) reflects experimental research to determine the quality indicators of a harrow with screw-type working bodies. Works Manjula et al, (2017) Tripathi et al, (2015), Tian et al, (2018) are devoted to the study of the impact of design and technological parameters of the developed variants of a harrow with screw-type working bodies upon the incorporation efficiency of the plant residues into the soil.…”

Investigation of the Tractor Performance When Ballasting Its Rear Half-Frame

“…Using the results of the theoretical research and methodology (Galych et al, 2021;Bulgakov et al, 2022), a numerical solution of the mathematical model ( 9) was carried out. Due to ballasting the mass of the tractor during its numerical modelling varied from 8600 kg to 10100 kg (tractor KhTZ-240K).…”

“…As investigations have shown, high traction and fuel economic indicators of the tractor can be reached only in the case of an optimal ratio of its main parameters, which are initially determined by calculation at the design stage (Cviklovic et al, 2021;Artiomov et al, 2021;Bulgakov et al, 2016). Their interrelation, to a greater extent, characterizes the main operational qualities of tractors (Adamchuk et al, 2016;Bulgakov et al, 2020;Bulgakov et al, 2022).…”

Special Issue on the Engineering of Smart Agriculture

“…Moreover, this monograph investigates the adoption and use of mobile internet technology in sustainable agriculture among wheat farmers [14], compression and heat generation by fungi in bulk maize with consideration of kernel cracking [15], and the implementation of a smart irrigation system with consideration of optimal energy management [16]. In addition, a method for extending the shelf life of apples after storage using low magnetic fields [17] and the theory of motion of a machine-tractor-trailer combination for harvesting beet tops [18] have been investigated. These studies provide valuable insights into innovative technologies, management practices, and theoretical frameworks that contribute to the development of agricultural practices, crop quality, and resource efficiency.…”