International Scientific Journals
of Scientific Technical Union of Mechanical Engineering "Industry 4.0"

The article presents, based on research into the impact of military operations on agricultural soils, the design of a flexible screw sectional working body, which will allow to increase the functional and operational characteristics of screw conveyors during the disposal of the removed contaminated soil layer. For the research, an experimental setup was developed and manufactured, with the help of which the torque on the drive of the flexible screw conveyor was determined. Based on the results of the research, graphical dependences of the change in the value of the torque Т on the frequency of rotation of the drive shaft of the working body n, on the radius of curvature Rк of the technological line and on the height h of movement when the technological line is completely filled with loose cleaned damaged soil from the middle of the crater are constructed. The obtained research results make it possible to choose the optimal design, kinematic and technological parameters of the developed screw sectional working body for transporting loose cleaned damaged soil from the middle of the crater.

The article presents a scheme of a new combined screw conveyor, which makes it possible to improve the performance of conveyors. To eliminate the identified disadvantages in the operation of flexible screw conveyors, new types of sectional working bodies hinged to each other have been developed, which will increase the reliability and durability of conveyors.

The article studies the damage and destruction of the fertile soil layer as a result of military operations, in particular the detonation of various kinds of explosives, and examines the level of contamination of agricultural soils with heavy metals and other harmful substances. A method of restoring the surface of damaged land caused by bombing is proposed, which involves first cleaning the craters from damaged and contaminated soil with heavy metals and other dangerous substances. If a dangerous concentration of heavy metals and other dangerous substances is found on the surface of the crater, the removed contaminated soil layer must be disposed of. When disposing of the removed contaminated soil layer, it is proposed to use a flexible screw conveyor with a sectional auger working body. The constructive scheme of the experimental setup with a hitch system of a machine-tractor unit and a flexible screw conveyor is shown. To select the rational design parameters of the screw sections of the working body, computer modeling of the influence of power loads on the corresponding deformations depending on the conditions of their operation was carried out.