No 2 (2012)


Terms of recovery of tractor fleet as a system with limited resources

Shevtsov V.G., Lavrov A.V.


Schemes of the annual cycles of transfer of value and resource recovery of tractor fleet are analyzed, depending on the economic state of production.
Tractors and Agricultural Machinery. 2012;(2):3-6
pages 3-6 views

Diagnosing the automotive engines according to the parameters of crankcase gases flow and pressure

Nikolayev Y.V.


The problem of automotive engines' diagnosis according to the parameters of flow and pressure of crankcase gases is considered. The influence of engine speeds on the change of diagnostic parameters is described.
Tractors and Agricultural Machinery. 2012;(2):6-7
pages 6-7 views

A bulldozer hybrid power plant generator

Voronin S.G., Sogrin A.I., Shvalev Y.S., Kislitsin V.I.


A diesel-engine generator for the hybrid power plant of bulldozer is developed. Hybrid transmission applicability in a vehicle of given class is shown. Some optional versions of realization of the main load-bearing element of electric power plant of hybrid bulldozer-generator are analyzed. Requirements for a hybrid vehicle generator are formulated. A multi-polar generator with combined excitation combination is suggested allowing to realize the propulsion system as an integrated module. An example of practical realization of the developed generator is shown.
Tractors and Agricultural Machinery. 2012;(2):8-11
pages 8-11 views

Improving the milling unit design

Ozherelyev V.N.


Specific kinematic features of milling rotor working with the forward and the row-spacing inclination of rotation axis are examined. Recommendations for the rational implementation of attachment point of L-shaped bent out cutter, in particular for the optimum setting angle of cutter pole in the plane of rotation, are given.
Tractors and Agricultural Machinery. 2012;(2):11-13
pages 11-13 views

Analysing the state of design and experimental researches of transport vehicles' frame constructions

Faradzhev F.A., Godzhayev Z.A., Nadezhdin V.S.


The state of computational and experimental studies of supporting systems of vehicles, including frames, in conditions of market relations, reducing development time and production organization was analyzed. Ways of improving the design of bearing systems, namely application of new materials and multi-objective optimization of the carriage and its components design are proposed. Authors propose a spatial mathematical model describing the complex vibrations, in which fluctuations of the motor-transmission installation and suspension are taken into account at the same time. Problems of the further development of computational and experimental methods of bearing systems in mechanical engineering are stated.
Tractors and Agricultural Machinery. 2012;(2):14-16
pages 14-16 views

Mathematical modeling of a wheel tractor-trailer oscillations

Zolotarevskaya D.I.


Vertical oscillations of front and rear axles of a wheel tractor having a semi-rigid spring suspension and unitized with one-axle trailer are considered. Mathematical model and calculation method for this unit oscillations are proposed. The influence of vertical oscillations of tractor-trailer's axels on the soil compaction was investigated. By means of computer modeling the influence of tractor-trailer speed on the axels oscillations' amplitude and frequency, and the compaction action of tractor-trailer on the soil during the field operations are revealed.
Tractors and Agricultural Machinery. 2012;(2):16-20
pages 16-20 views

The effectiveness of tractor diesel operating modes control based on fuel omissions

Galiullin R.R.


Performance indicators of tractor diesel engines in conditions of regulation of operating modes by the omissions of fuel supply were analyzed. Authors propose a dependence allowing to determine the coefficient of efficiency during the tractor diesel work by means of fuel supply omissions.
Tractors and Agricultural Machinery. 2012;(2):20-21
pages 20-21 views

The uniformity of grain seed distribution with a double-strand opener

Demchuk Y.V., Kobyakov I.D.


Results of double-strand opener testing in the soil channel in realistic conditions are brought. Mathematical models of uniformity of grain seed distribution on the length and width of sowed strand are received.
Tractors and Agricultural Machinery. 2012;(2):21-23
pages 21-23 views

Analysing the process of loose material transportation in a horizontal flexible auger

Zolotariov P.S.


Experimental data on the visualization of transportation process of loose material are considered using Lagrange approach and radiography. On the basis of experimental data and a model of coaxial cylinders, a class of exact decisions for the speed field of loose material in spiral-screw device is received for the first time. The good consensus of trajectories of a liquid particle and a marker confirms the adequacy of developed physical and mathematical model.
Tractors and Agricultural Machinery. 2012;(2):23-27
pages 23-27 views

The SI system: units of measurement of dispersibility

Veretennikov Y.M., Ostrovskiy V.G., Antonyuk P.N., Paremskiy I.Y., Ovsyankina A.V.


On the basis of the classic formula of ball volume a practical system of measurement units for dispersion index was developed instead of optional dispersion so-called «average diameter». It is proposed to include it in the SI «International System of Units».
Tractors and Agricultural Machinery. 2012;(2):27-29
pages 27-29 views

Models with a random frequency for the imitation of input disturbances and statistical calculation of nonlinear systems within the correlation theory

Soloveychik A.A.


Mathematical models with a random frequency for the imitation of disturbances at the input of nonlinear systems are proposed. The effectiveness of different models is evaluated with a test problem of determining the standard deviation of angular velocity of motor shaft at random influences.
Tractors and Agricultural Machinery. 2012;(2):30-35
pages 30-35 views

Agricultural engineering products quality certification maintenance based on the tractive and transport vehicles movement theory

Roslavtsev A.V., Sapozhnikov I.I.


Some theoretical operating conditions and parameters describing the movement and controllability of machine-tractor units, as well as their practical significance and the implementation of results of research and development activities in view of certification maintenance are considered.
Tractors and Agricultural Machinery. 2012;(2):36-40
pages 36-40 views

Tribological properties of hydraulic cylinders' sealings polymer materials

Borisov V.I., Kuznetsov V.V., Vodyakov V.N.


The results of research of tribological properties of polymeric materials for the seals of movable connections are brought in conditions of volume compression using the method of complete multifactorial experiment. Regressive equations adequately describing the dependence of wear intensity and friction coefficient of materials at their co-operating with a counter-body (steel of 40Х), from hydrostatical pressure, speed of skidding and temperature of working liquid are given. It is determined that the preferable complex of tribological descriptions is possessed by the rubber under the code number 7-ИРП-1269″ and the fluorine plastic Ф4К20″.
Tractors and Agricultural Machinery. 2012;(2):40-43
pages 40-43 views

A multiparameter fuel characteristic of the Cummins diesel

Gorodetskiy K.I., Golnev V.S., Yershov Y.P., Raskin A.M., Prischepenko A.N., Shuvayev D.N.


Results of bench test of the Cummins QSM11-C330 engine are analysed. A new method of construction of multiparameter fuel characteristic of diesel engine is proposed. The accuracy of obtained results relative to experimental data is estimated.
Tractors and Agricultural Machinery. 2012;(2):44-47
pages 44-47 views

Application of the contactless stereography method for the identification and assessment of restored parts' defects size

Gorshkov Y.G., Vakhrushev V.V., Mashrabov N.M., Shestakov A.M.


An approach to the estimation of defects after the reconstruction by thermal processing of steel and cast iron details for tractors and cars is declared. A method based on the application of optical-electronic means and computer technologies is offered. Estimation results and size of defects on the surface of details after restoration are brought. Features of construction and work of the optical device on the basis of advanced double MIS-11 microscope are considered.
Tractors and Agricultural Machinery. 2012;(2):47-51
pages 47-51 views

Choosing abrasive materials for the grinding of iron-based plasma coatings

Alekseyev N.S., Ivanov S.V., Boyko Y.A., Kaporin V.A.


Test results of wear resistance of some abrasive grains made of different abrasive materials during the microcutting of plasma coating and hardened steel 45 are published. As a result of given research the most wear resistant abrasives during the microcutting of specified materials have been found out. Electronic-microscopic and micro-X-ray spectral research of working surfaces of isolated grains allowed to reveal the physical and chemical processes in contact between abrasive and metal, and also to establish the adhesion activity of abrasive materials related to the plasma coating.
Tractors and Agricultural Machinery. 2012;(2):51-55
pages 51-55 views

On the Regulations on safety in the repair and maintenance service of agricultural machinery

Burenko L.A., Filippova Y.M., Ivleva I.B., Doronin D.V., Kazakova V.A.


The need for a new regulatory and technical document Regulations on Safety in the repair and maintenance service of agricultural machinery is grounded. The results of monitoring of repair and service enterprises, production sites, working places, technological equipment as well as the sources of occupational risks are shown.
Tractors and Agricultural Machinery. 2012;(2):56-
pages 56- views

The 75th anniversary of G.A. Romanenko

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Tractors and Agricultural Machinery. 2012;(2):55-
pages 55- views

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