Effect of different parameters on operation of linear electric drive on the base of linear asynchronous motor with various frequencies winding power supply was under study. Findings of investigation are given.
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.
Developed mechanism for combined edge cutting machining and surface plastic deformation with regulated rolling force by rollers is presented.
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.
Construction of separators and technological procedure of cabbage heap separation from loose leaves are described. Specification of suggested devices is 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.
Data of grain combines failures and troubles analysis for the purpose of mechanisms technical state characterization by means of vibroacoustic diagnostics method are presented.
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.
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.
Questions of technical readiness of agricultural tractors and combines are considered. Their fleet, market size and import into Russian Federation are analyzed.
Nomenclature of tractors produced by Zetor company, their constructive features, key indicators of technical level are considered. Results of comparative testing of these tractors and their analogs produced by leading tractor companies are given.
An original continuously variable two-engine hydrovolumetric mechanical gearbox with ГСТ-112 hydraulic units for wheeled tractor with breaking frame (of ХТЗ-220 class) and 220-240 hp motor is presented. It ensures tractor operation in four velocity ranges with continuously velocity variation in the limits of every range.
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.
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 inertial thickener and working procedure of manure drains initial mass fractioning are described. Results of inertial thickener testing on a developed experimental unit are given.
Three kinds of working organs were compared: a hydraulic vibration separating organ, standard elliptic working organs of passive action and a vibrating organ with mechanical drive. Results of comparative testing are presented.
Reliability problems of hydraulic drives of building and road machines and factors influencing the level of failure and troubles of hydraulic drives of hydroficated machines were analyzed.
Evaluation indicators of operating efficiency and balanced system of operational indices of machine-tractor units are substantiated. Optimal operational indices and degrees of their realization for a soil-cultivating and sowing unit 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.