The article considers the question of practicability for use of different variations of welding reinforcement in terms of technological efficiency. Solid-metal ploughshares in the as-received state and ones after welding reinforcement of their points have been experimentally investigated.
The paper presents the results of researches of influence of vibration level of color sorter’s vibratory feeder on the quality of buckwheat seeds cleaning. Dependences of quantity and purity of seeds, of content of hulled kernels and impurities, as well as dependence of thousand-kernel weight on the vibration level of vibratory feeder have been obtained.
It is shown that the basis of robotic technologies in plant cultivation is an unmanned mobile power unit for agricultural purposes on wheeled or tracked platform with hybrid power plant, motion control equipment and machine vision device. Technological operations are performed by technological robotic modules mounted on the platform.
Through the laboratory studies of oil strength by its extension in metal bellows, the possibility of use of strength index as a complex and diagnostic index has been determined.
The article presents the theoretical and experimental investigation of stiffness in tension and bending of rubber-reinforced tracks of agricultural tractors with calculation models development and analytical expressions and their reliability assessment. Influence of load-bearing layer construction and tracks damages on their static loading indices has been experimentally estimated. Main direction of improvement of rubber-reinforced tracks construction has been determinated.
Mathematical model and calculation algorithm of cycle of reciprocating internal combustion engine operating on gaseous fuel are presented. Influence of cycle indicators on pressure magnitude is considered, taking into account the features of gaseous fuels application.
Experimental investigation of Д-245.12С diesel engine operating on water-biofuel emulsions of different composition has been conducted. Possibility of performance improvement with the use of water-biofuel emulsions as a fuel for diesel engines is shown.
Theoretical dependencies that allow to determine the height of furrow ridges during the operation of blade rotary working organ depending on its main parameters have been obtained. The use of these dependencies allows to satisfy the agrotechnical requirements in the process of tillage.
The article discusses the question of refinement of analytical dependencies determining the summarized external forces of resistance in the system of differential equations of motion. For describing the interaction of track assembly with the ground in curvilinear motion the model of combined friction is used.
The article considers the optimality criteria in the development of hardening technologies for critical parts of engineering products. It also presents a forecasting method for product quality indices in the process of high-temperature thermomechanical treatment with deformation by screw compression of hot-rolled heavy-walled pipes.
Duration and temperature of grain aeration by heated and unheated drying agent have been calculated; the method of grain drying with variable heat supply has been tested in practical work.
The article assesses the impact of variable load on energy and technical-economic indicators of machine-tractor unit. Dependencies have been obtained with the assumption that there is a sector of constant tractive power on tractive characteristic of a tractor.