Vol 80, No 1 (2013)

An experimental cultivator equipped with working organs for deep tillage and ridge formation during the potato cultivation was under study. Findings of investigation are given. Suggested cultivator ensures the decrease of soil density and the improvement of soil structure.

Construction of separators and technological procedure of cabbage heap separation from loose leaves are described. Specification of suggested devices is given.

Design procedure of the traction machine full-strength construction, based on the statistical characteristics of its loading modes is presented. Data for application of this technique during the calculation of service life indicators for specific machines, namely ДТ-75 and ДТ-75М tractor models manufactured by the Volgograd tractor plant, are also given.

Procedure of initial data generation for calculation and designing of fluid flywheel for internal combustion engine fan drive is given. Fans can be devices of air or fluid cooling, and cooling draught inlet can be axial and radial-axial. The central purpose is to generate algorithm and software for personal computer with maximal exploitation of analytical dependences instead of graphs.

Ways of chain drive improvement are projected on the base of its operation analysis. Calculation and design basis for chain gears with increased gear ratios of long-term operating capacity are developed.

Influence of cutting angles of plain knifes and under-knife blocks setting on particle descent angle and specific energy intensity of chopping was estimated with the help of computer model. Findings of investigation are given.

Formation of porous stoppers in delivery capillaries of hydrostatic bearings and their obliteration are substantiated as secondary factors of bearings deterioration under the impact of working fluids contaminations. Findings of the laboratory investigations are given.

Information on traumatism and occupational sickness rate is given. Necessity of development of Russian State Standard on safety requirements to repair and processing equipment is substantiated. Safety requirements to certain kinds of domestic and imported equipment are examined.

Interrelationship between economies dimensions and their need for tractors and other machinery is examined. Three main mechanisms that cause the need for technical equipment are showed on an example of analysis of specific tractor equipment status of worldwide producer’s economies.

В начале 2013 г. в издательстве «Инфра-М» выходит из печати второе издание учебника «Тракторы и автомобили», принципиальное отличие которого от аналогичных состоит в том, что в нем наряду с теорией трактора впервые изложены методы оценки его технологических и тягово-динамических свойств. Ранее эти методы в вузах не изучались. Благодаря новым разделам предлагаемый учебник станет первым максимально приближенным к эксплуатационному направлению, по которому с.-х. вузы готовят специалистов инженерного профиля.