Topological optimization method based on finite-element modelling is described, and tasking of force diagrams synthesis for heave loaded machines parts is given. The force diagrams synthesis for lower control arm of independent suspension for truck of fully loaded mass 36 ton in space permitted by aggregates arrangement is exemplified. Recommendations concerning the method use in solution of similar tasks are given.
Average specifications and performance parameters of surface tillage tools equipped with different kinds of working organs are given. Obtained data is analyzed.
Agricultural robot manipulators intended for harvesting of strawberry, fruits, vegetables, bush trimming, plant and seedlings planting, weeding, disk ripper knife grinding, pallet laying are reviewed. Their operational principle are outlined, mobility and manoeuvrability assessment of manipulators is carried out based on block schemes supposed by authors.
Presentation method for speed series of agricultural tractors in the matrix form was proposed and described. That to a certain extent reveals the kinematic scheme of gear boxes and ways of creation and modification of their constructions depending on specified requirements. The matrix form of speed series presentation helps to develop new, more effective kinematic schemes for compound gear boxes of agricultural tractors.
Operation modelling of brush cutter equipped with shoots supporting device improving completeness of minor forest trees shoots cutting, was carried out. Supporting device ensures propping during milling of shoots, which have low strength in bending.
Assessment criteria for suitability of cotton plant to harvesting with vertical spindle cotton pickers are theoretically substantiated, taking into account width of cotton bush, height of lower cotton boll location, sizes of green and dehisced bolls. Suitability assessment of released and promising varieties using specified criteria is given.
Uniformity of seed distribution on feeding area and on depth of sowing and crop yield are indexes obtained during field tests of experimental two-band ploughshare (in comparison with series-produced ones) while sowing of “Omskaya-36″ wheat.
Influence of oil leaking in hydraulic system on hydraulic motor operation is shown. Necessity of hydraulic oil temperature stabilization is substantiated.
Problems of diesel fuel lubricity and low-temperature properties improvement are considered. Fuel decontamination increasing antiwear properties has been under study, findings are presented. Efficiency assessment of some depressant and dispersant additives improving low-temperature properties of diesel fuel is given.
Analysis of operation modes and conditions typical for agricultural tractors as well as their influence on operating efficiency of turbocharging diesel engines is presented. Results of experimental investigations of diesel engine, equipped with turbocharging control system are given.
Russian market of gas-engine fuel is reviewed. Main problems restraining use of compressed natural gas in agricultural production are given. Complex approach to the gas-engine fuel supply of agricultural production is proposed.
Method for location determination of old and unfit machinery recycling enterprise in compliance with administrative-territorial division of constituent entities of the Russian Federation is presented. Point of locating within the territory of Yegoryevsk district of Moscow region is determined.
Problems of improvement of a potato harvester elevator performance are considered. Performance quality is determined by the intensity of the separation of soil and degree of preservation of the tubers. Application of cam rapping device can improve a quality of soil separation in primary elevator as well as in the harvester as a whole.
Features of logistical system of an engineering plant are marked out. The role of production logistics is defined more precisely. Mathematical model is stated, and operative management algorithm for parts supply chains in base production is developed. Strengths and weaknesses of this method are identified.