This article discusses the impact of repair-recovery compositions on the process of buildup of the soil working bodies of earthmoving machines. Adhesive forces can be reduced by creating an intermediate layer at the interface between the phases of the system “surface of the working member - the medium to be treated. This layer serves as a screen for intermolecular interaction forces of phases, has a small adhesion and cohesive interaction and has a “lubricating” effect, i.e. provides the possibility of relative displacement of phase working surfaces. Experimental work is conducted in accordance with the mathematical theory of planning of experiments (plan Box 3). After handling of an experiment graphical dependences of effort of shift from a surface without repair and recovery structures and with use of repair and recovery structures were received. The experiments carried out showed that when the RVS is applied, the adhesion of the soil to the metal surface of the digger’s working member is reduced by an average of 18%.

This article discusses the use of a mechanical method of combating soil adhesion to an excavator bucket. Experience in the operation of earthmoving machines shows that when developing wet soils (especially at freezing temperatures), freezing and sticking of soil to working bodies significantly reduces machine performance. The analysis of devices designed for mechanical cleaning of the excavator bucket was carried out, the most effective equipment design was also selected hydraulic excavator, eliminating the disadvantages of other models. According to the technical task, the working body in Compass-3D was designed, angles, speed of movement of the hydraulic cylinder relative to the handle of the excavator and the force on the cutting edge of the bucket were calculated.

In the paper the analysis is carried out for using polymer antiadhesive sheets in order to reduce adhesion of wet cohesive soil to working bodies of excavation machines when operating under sub-zero temperatures. When extracting thawed mine rock under subzero air temperature, intensive freezing of cohesive ground to contacting bucket surfaces, pickup apparatus elements, conveyor belts, treating facilities and links takes place. Freezing intensity depends on humidity, grain size composition, physical properties and temperature of mined rock. Material properties of working bodies which contact mined ground also have significant impact on adhesion of freezing of mined rock. Clay rocks are the most prone to freezing on. An experiment was held using PPL-EI (ППЛ-ЭИ) and PPL-UI (ППЛ-УИ) polymer coatings on adhesion of cohesive overburden rocks to mine excavator buckets under subzero temperatures. After mathematic analysis of experimental results regression equations were obtained, which were applied to engineering solution of excavator bucket.