Vol 76, No 11 (2009)

Basic approaches to the quality of agricultural machinery at the different stages of its creation are considered, from the substantiation and development of its сonstructional and technological diagrams to the processes of its use in agricultural industry.

The article covers the problems of affordability, reduction of cost price of processing, overall dimensions, specific quantity of metal of fodder shredders and the problems of increasing their efficiency.

Article brings the results of experiment exploring the deformation of topsoil by caterpillar tractor, for the purpose of checking the adequacy of earlier made and published mathematical model of interaction of propeller with the supporting base, which has rheological properties.

The necessity of providing the nominal output of machine-and-tractor unit by choosing rational operating modes of the tractor diesel engine has been theoretically justified. For the constant control of diesel engine charge during the work of machine-and-tractor unit, a device has been designed that is made of sensor, signal converter and load indicator.

In the article the general arrangement of performance evaluation of operation and competitive strength of the ploughing unit is considered, based on test results. Statistical characteristics of efficiency factors, regression models presenting the functioning of ploughing unit, and also the analysis of results are brought.

A universal technique of the multifactor cognitive system posterior tensor modeling is offered. The technique is based on the presentation of the multidimensional regression model of the multifactor cognitive system under examination in the form of the final valence covariant tensors vector sum, and it imposes minimum requirements to the experimental data volume necessary for the multifactor cognitive system identification, as well as to the multifactor cognitive system optimal condition evaluation according to this model. On this methodological basis and on the testing data basis, the environment and condition evaluation is made, it defines the precision plunger pair renewal process in a multicomponent chemical solution by sulfochromized coating having optimal physical-mechanical properties.

The causes of the air-cooled diesel's cylinder deformation are analysed, leading to the increase in mechanical loss and decrease in reliability and service life.

A potato combine harvester adjustment procedure is suggested based on the operational process control. Due to the preset adjustment of working members, the tubers loss and damage are minimized.

A procedure realized in the computer program Microsoft Excel media with the use of queuing theory elements is described. It allows to take into account different variants of work organization during the fertilizers and ameliorants application.

16-19 сентября 2009 г. в МВЦ «Крокус-Экспо» прошла Международная специализированная выставка с.-х. техники «АГРОСАЛОН», в очередной раз подтвердившая свой статус центральной отраслевой площадки, где под одной крышей демонстрируются новейшие машины для АПК. На территории 2 га было собрано 237 компаний из 19 стран мира, посетителям представлены 300 ед. современной с.-х. техники из 17 стран.