Backup heating and ventilation systems of drum solar dryer providing its work in inclement weather conditions are tested.
Dynamics of changes in characteristics of the flow of grain pile entering in dryer have been analyzed on basis of experimental data. Stochastic mathematical model determining the initial operating conditions of dryers is constructed. The model allows to simulate the operating conditions of dryers regardless of their throughput capacity.
The article describes modern tractors operating on compressed natural gas. Diagrams of gas and gas-diesel fuel systems are presented.
Factors affecting the quality of threshing of white lupine grain during harvesting are described. Settings of threshing and separating system of КЗС-1218 Palesse GS12 combine harvesters are analyzed. Dependence of seed damage on the rotating frequency of threshing drum and on the gap between threshing drum and concave is determined. Recommendations for adjustment of threshing and separating system of the harvester are given.
The article deals with a technique of modeling of deformation properties of soil bearing surfaces using the finite elements method in nonlinear dynamic formulation for problems related to the passability assessment of wheeled vehicles. Using of the technique will allow to specify the calculation of mutual deformations of tyre and soil bearing surface, to forecast the level of passability of wheeled vehicles depending on the intended area of operation at design stage.
Technological process of cold forging of the plunger tappet by using backward-and-forward extrusion is developed. Manufacturing process of the blank is simulated by means of QForm 3D simulation software. Measures for removal of causes of possible defects are described.
The article considers the force interaction between stroke drive of bridge aggregate with frictional kinematic connection of supporting-driving wheels and the guide track. Calculated values of power factors leading to misalignment of agricultural bridge aggregate in relation to the guide track are obtained. A new kinematic diagram of drive of bridge aggregate preventing misalignment and providing plane-parallel motion on the guide track is given.
A method for optimal designing of parts and units is presented. Its application will allow to increase the structural reliability of agricultural machinery.
The article proposes a new method and a line for production of vitamin grass flour from leaf parts of grass plant, that ensures reducing of operational costs by 7,2 times as compared to АВМ-0,4 unit and manufacturing of high-quality vitamin grass flour without diesel fuel using.
The article deals with a method for determination of critical changes in health condition of tractor operator in the process of driving by means of continuous monitoring and processing of cardiological signal.
The article considers a new environmentally friendly technology of cutting tools reinforcement that improves productivity and quality of machinery parts processing. Formation technology and structure of mesh coating of cutting tools are presented.
The article provides a brief analysis of methods for recovery of bronze sleeve bearings. Some devices are proposed that will allow to develop the technological processes of recovery of sleeve bearings by various methods.
Ratios of repair sizes of width and outer diameter of gear teeth are determined. They allow to obtain the values of efficiency coefficient no less than 90% of the new pumps’ one.
Analysis of operational failures in drivetrain details of vehicles equipped with extra-low pressure tires has been performed. Imperfection of existing method for simplified calculation of those drivetrains is shown.