Efficiency evaluation of machine and tractor fleet based on multipurpose power vehicles with sets of replaceable modules in conditions of the South of Russia

In recent years, some foreign companies pay special attention to development and creation of multipurpose power vehicles supplied with sets of replaceable technology adapters. The North Caucasus Research Institute of Agricultural Engineering and Electrification in cooperation with Gomselmash presented a constructive layout diagram of multipurpose power vehicle. Its principal differences are the replacement of technology adapters by means of mechanism mounted on power vehicle, and the possibility of straight-flow moving of processed material in harvesting modules. The efficiency of multipurpose power vehicle is straightly correlated with its annual utilization, that depends on natural-climatic conditions defining the structure of crop areas, the technologies and the period of operations. The efficiency of multipurpose power vehicle according to state standard is evaluated by application to the conditions of typical farm. The research objective is the technical and economic evaluation of functioning of machine and tractor fleets formed with production machines in basic version, and with production machines and multipurpose power vehicles developed for the subzones of regions of the South of Russia - in new version. Evaluation is made with the use of a developed mathematical model of optimization of technological complexes and machine and tractor fleets in general. The introduction into machine and tractor fleet of multipurpose power vehicles with complexes of replaceable modules meant for subzones of regions of the South of Russia will allow to reduce the operational costs of entire set of works of field crop cultivation by 12.4-20.6% and the cost of machine fleet by 17.5-29%; reduce the relative energy consumption that accounts for 100 hectares by 28.3-38.1% and the relative material consumption by 16.5-33.4%; increase the net present value by 31.8-246%. For reducing the costs of fuel and lubrication materials, the ballasting of chassis during energy-intensive works and use of variable-power engine are proposed.

agroindustrial complex, machine and tractor fleet, multipurpose power vehicles, replaceable modules, evaluation, efficiency indicators