This article provides an important study of the vertical forces acting on the tractor unit. At the same time, it is shown that the undercarriage of a stationary tractor perceives the operating weight of the tractor itself, mounted agricultural machines and fertilizers. Thus, with a steady motion of the tractor unit, the values of the loads on the front and rear wheels change due to the resistance forces of the working tools and the rolling resistance force. And it is also shown that the rolling resistance force reduces the vertical loads on the steering wheel and the drive wheels are loaded by the same amount due to the redistribution of loads along the axles.

In article is given mathematically modeling of fluctuation, movement and kinematic forward axle, suspension bracket of a skeleton, engine, cabin and seat of the wheel tractor. It is given an analytical type of the equation, the describing vertical fluctuations and longitudinally angular fluctuations of a cabin and the main parts of the tractor. Using this model will be found as far as distances are displaced the main parts of the tractor at vibration. The equations of linear system fluctuation with one degree of freedom of the under cabin damper, which shock-absorber of the tractor, are described.

A bioenergy plant with a solar heating system for individual use has been developed and built, intended for the processing and disposal of agricultural waste of organic origin to obtain biogas and liquid high-quality organic fertilizers under conditions of anaerobic fermentation. The main features of heat transfer processes in bioreactors are considered. A mathematical model is proposed that describes these processes. The use of the resulting model will improve the control processes of reactors and comply with technological regimes

To improve the reclamation state of the land, a big role is played by a horizontal horizontal drain, which does not give for raising the level of groundwater and collect salt water during irrigation. For the protection of drainage from destruction and flushing, an important role is played by the compaction of the ground, which inside trench. The article addresses the issue of ground compaction in trenches of closed drains. The article gives the advantages and disadvantages of the existing methods of compaction of ground in trenches of closed drains, the results of a study of methods of compaction of ground in trenches of closed drains showed that backfilling and compaction of the ground is done separately, these operations must be performed simultaneously, this article gives the design of a compaction device that must be performed simultaneously, the basis theory of ground compaction, the results of laboratory research, the results of the study determined: acting ground force on the surface of the sealing blade (F = 12 kN/m 2), the outer diameter of the sealing blade (Dou = 300 mm), the inner diameter of the sealing blade (Din = 600 mm), the coal between the blades (ϕ = 15 … 30°), the rotational speed of the blade shaft (n = 360 tu/min), degree coefficient (Ks = 1,22) of ground compaction, ground density ρg = 1375 kg/m 3).

The article gives the importance of the technical operation of biogas plants and methods for their determination in the development of alternative energy sources from organic waste. When comparing the two methods in experiments: determining the frequency of maintenance by the acceptable level of reliability and the acceptable value and regularity of changes in the parameter of the technical condition of biogas plants. Their advantage is shown: in simplicity and the possibility of taking into account risk and taking into account the actual technical conditions of biogas plants (diagnostics), in the ability to guarantee a given level of reliability in taking into account variations in the technical condition. Also, the disadvantages of these methods are given, such as the impossibility of making full use of the resource of individual parts of a biogas plant, due to the fact that the frequency of maintenance (П0) is significantly less than the acceptable level of failure-free operation (ñ), in the absence of direct economic assessments of the consequences of biogas plant failures and the lack of direct consideration of economic factors and consequences. The need to receive (or have) information on the patterns of changes in the parameters of the technical condition. In connection with these, the article presents the results obtained by the method of economics and statistics, while it is shown that the technical and economic method is applicable to complex and expensive systems of units and assemblies that do not directly affect the safety of the biogas complex.