Methodical approaches to the substantiation of type, composition and structure of combines fleet for the Krasnodar Region conditions are suggested taking into account flexible multipurpose aggregates and results of optimization on resource saving criterion.
An application package for the parameter estimation of corrosion fatigue lines equations is given, also allowing to determine the functions of relative strength and durability coefficients of parts operating in corrosive environments.
Approaches to the problem of synthesis of control algorithms for gear shift using electric-hydraulic and electronic devices were examined. It is noted that well-timed shift should increase tractor velocity and a “successful” algorithm should not worsen its usability. Possible criteria were analyzed.
Mathematical models and target functions of precision parameters optimization are presented. Criteria of optimization are examined and on their base options of decision making are considered.
It is shown that a scientific reserve of research and development ensuring subsequent integration into the international scientific-technical field should be created aiming the achievement of technical level and competitiveness of internal-combustion engines for tractive vehicles in the WTO market.
Results of experimental testing of a combined device for diesel exhaust gases toxicity decreasing, as well as technical and economical substantiation of its application are given.
Dynamic model of a crawled tractor equipped with hydrovolumetric slewing mechanism is substantiated. It was used to estimate the dynamic stability of this tractor aggregated with a plough. Effect of hydrovolumetric slewing mechanism application on the crawled tractor on its average pass velocity is estimated experimentally.
Construction of a filter for fuel purification and heating during machine exploitation under low temperatures is presented. A calculation method of fuel heating systems in fuel systems of diesel machines is suggested.
A method of standards use for labor resources and time expenditures in terms of relative unit of maintenance and repair difficulty category by machine and equipment groups for modern technical service is presented.
Results of investigation of tree hauling with skidding tongs are stated. A calculated scheme for determination of forces appearing during the hauling is presented; formula for tree dislocation is defined more accurately.
The trends of agricultural machinery testing methodology are shown. Experience of navigating systems using in agro-industrial sector is analyzed, development of testing methods and means is tasked on this base, that will increase the results reliability in conditions of real operation.
The slipping effect of all-wheel-drive energy-saturated wheeled tractors on their operational powers and masses was analyzed. Optimal values of operational powers and masses for respective tractive classes were established according to the 27021 State Standard.
A soil cultivating roller equipped with a number of additional functional elements is developed, allowing to transform a passive roller into the monitoring system of soil density automatic regulation.
Results of investigations of rotation working organs of tools for autumn shallow soil cultivation are given. Their improvement allows to rise the quality of weed seeds embedding into the soil and to increase the weed control efficiency.
A mathematical model of investigation of machine and tractor aggregate acceleration is presented in the form of branched plan, where the epicyclic clutch mechanism is used as a summing member.
Advantage of liquids purity identification by minor fractions of dirt particles, by their ratio and classifications taking into account the effect of basic cleaning means (but not stages of technical equipment life) on dirt is substantiated.
A table feeder for friable components of mixed fodder is examined. Degree of its working organs parameters’ effect on the performance is estimated by means of screening experiment.
The spatial and topologic approach is considered as applied to solving the problem of increase of technical and economical parameters of wheeled tractors in conditions of variation of engine power, tires standard size, tractor mass and transmission gear ratio.
The values of tire volumes in a wheel cover depending on diameter, height of tire section and width of the wheel are obtained. The volume of driving, aligning and carrying wheels is determined using reference data on geometric parameters of different tractor tires.
A method of economic efficiency estimation for soil cultivating cutter with two-stage B-shaped knives is given. The ФБН-0,9 cutter with L-shaped knives was taken as basic variant. Source data of compared constructions, calculated formulas, technical and economic indices of constructions efficiency are cited.