Experimental Study of the Movement Controllability Of a Machine-and-Tractor Aggregate of the Modular Type

Abstract

he paper presents an analysis of the basic principles of formation, the properties and characteristics of a new modular energy tool, consisting of the energy and the technology modules. The purpose of this study is to assess the degree of impact of the throttle in the hydraulic line, connecting the cavity of the hydraulic cylinder, upon the controllability of the modular power tool with a mounted plough during the movement of the ploughing aggregate on the headland. As a result of the conducted tests, it was proved that increasing the controllability of the movement of the aggregate on the basis of a mobile power tool is possible by throttling one of the hydraulic cylinders that limit the mutual reciprocal rotation of the modules in a horizontal plane. Installation of the throttle modular power tool on the limiting hydraulic cylinder with a drag coefficient 1.03×106∙N∙m∙s∙rad–1 allows one to reduce two times the delay in the reaction of the relative bearing of the energy module to a change in the angle of rotation of its driven wheels.

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

“…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).…”

Experimental investigations in vertical vibration damping of agricultural aggregate of block-modular type

“…A perspective direction in the development of tractor building, which means creation of traction-driven agricultural aggregates, has not yet been sufficiently studied. Of particular interest is the formation of such aggregates according to the block-modular principle, using technological modules with the driving wheels [5][6][7].…”

“…A positive by-effect of the technological module is vibration damping of the block-modular aggregate, created by inertia of its weight and the resistance force of the agricultural implement. Investigation of the smooth running of mobile power facilities, transport and machine-and-tractor aggregates, in order to improve their dynamic characteristics, are given in the works by many scientists [6][7][8][9][10][11][12]. In particular, they have proved that the vertical vibrations of agricultural aggregates lead to a change in the dynamic radius of the tractor wheels, and with it, its adhesion weight.…”

Research in dynamic transitional processes of functioning of combine harvester hydraulic drives

“…Research and diagnostics of the condition of the hydraulic equipment of agricultural tractors, combine harvesters and machines is an urgent practical and scientific problem. Despite the fairly widespread use of the on-board electronic means [10][11][12], not enough attention is paid to the technical diagnostics of the hydraulic drives, although almost 25% of faults, out of the total number of tractors and combine harvesters, are accounted for by the hydraulic drives. In modern combines, depending on their purpose, the steering, the running system and most of the technological mechanisms are hydraulic.…”