Vol 80, No 7 (2013)

На очередном заседании «Меркурий-клуба» (Москва, Центр международной торговли, 21.05.2013) представители министерств и ведомств, Госдумы и Совета Федерации ФС РФ, ученые, бизнесмены и политики обсудили проблемы перераспределения экономических функций между федеральным центром, субъектами федерации и муниципалитетами.

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.

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.

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.

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.

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.

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.

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.

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.

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.