Vol 77, No 1 (2010)

Last years a microprocessor technical revolution in automatics and control of mobile machines has occurred. Their elements have changed dramatically and their possibilities have essentially, cardinally extended. In the paper the condition of serious backwardness in this area of technics from a technological level of the advanced countries is ascertained, opportunities and prospects of development of automatics and controls in our country in new conditions are estimated. Personnel opportunities of development are estimated sceptically.

Probes of tractor diesel engine Д-245.12С (4ЧН 11/12,5) were carried out in the Vjatsky state agricultural academy for improvement of ecological indexes by natural gas application. On the basis of the made laboratory-bench probes of working process of a tractor turbocharged diesel 4ЧН 11/12,5 at operation on a natural gas the possibility of improvement of ecological indexes of a diesel engine by natural gas application, in particular by drops of nitrogen oxide in exhausted gases, saving of solar oil, heightening of effective indexes is determined.

Проанализированы основные направления разработки комплекса машин для уборки овощей. Предложены модернизированные конструкции, позволяющие снизить трудоемкость уборочных работ, потери и повреждения плодов и повысить производительность труда.

In agricultural industry the hammer grinders are the main devices for grinding grains. The lock of sifts in the operational area of the grainder prevent the removal of the ready product is the main drawback of these grainders. It can lead intensive formation of dust, wear of sift and hammer and over usage of electricity. More raised construction of the grinder allows to overcome all the drawbacks. The separator allows to define the main parameters of cylinder part of separating sift.

A pneumatic separator, which allows to clear grain from fine (sand etc.) and coarse (shingle, slag etc.) mineral and metallomagnetic impurities is presented. The constructional and technological circuit and general view of separator are drawn. The results of multiple-factor experiments on optimization of pneumatic separator parameters are submitted.

Dynamic behavior of the mathematical models received on the basis of mathematical methods of identification according to natural experiment on curvilinear movement of a tractor train on turn is considered. Spectral characteristics are submitted as periodogramms, spectrums of state variables, peak and phase frequency characteristics.

A scientific research was realized. Connection and dependence were determined between elements of threshing machine for combine harvester system. It enabled to elaborate functional scheme of threshing machine. Using of this scheme let to elaborate the plan of multiple-factor investigations of threshing machine by mathematical modelling of it.

The results of research of modernized separating conveyor that exert intensive influence on tuber's layer are shown.

Представлен метод расчета формы поршневых колец в свободном состоянии от воздействия температуры, возникающей при работе двигателя, основанный на решении теоремы Мора.

In this work compression springs with torsion are examined. In calculations relations between kinematic and static characteristics, according to the Kirchhoff and Clebsch theory, are used. Calculation of variable section springs on carrying capacity or reliability loss with critical values of torque and axial force determination is brought.

Mobile energetic means (MEM) and methodology of its diagnosing are presented from the point of view of achievements in sphere of information technologies. The expediency of application of essentially new monitoring system behind technical conditions of MEM is caused by necessity for efficiency of data acquisition about its current condition with the purpose to warn malfunction on the first stage of formation. The program architecture of treatment of data system's and one of possible version of its testing is considered.