The article presents the results of the development of a chassis for the placement of transport and technological machines equipped with a transmission with the possibility of taking off high power (in relation to the power of the standard running engine). Based on the analysis of the market and advertising campaigns of the leading manufacturers of trucks and wheel chassis, a conclusion is made about the competitive advantages of a chassis with a large selection of power. A detailed diagram of the developed transmission is given. A mathematical model is presented for the study of dynamic working processes in the transmission when using the chassis for the placement of base stations of mobile transport and reloading rope complexes (mobile cable cars).

The results of scientific research activities of scientists of the Academician I.G. Petrovskii Bryansk State University in the development of promising domestic samples of designs of mobile transport and reloading rope systems and ropeways based on self-propelled wheeled chassis of high carrying capacity and cross-country ability and the creation of scientifically substantiated methods for their design and computer simulation of work processes during operation. The description and analysis of the effectiveness of new technical solutions of mobile passenger and cargo aerial ropeways are given.

The lack of the necessary amount of equipment for winter maintenance, significant precipitation in the form of snow, lead to a decrease in the efficiency of roads. Inside, courtyards and sidewalks are also covered with a layer of compacted snow due to untimely snow removal. Mekhanic method of breaking compacted snow is currently insufficiently studied and so far there is no effective equipment to combat snow and ice formations. A peculiarity of the process of compacted snow destruction in the mode of vibration cutting is intermittent contact of the knife with the destroyed medium. Condition of the set mode of vibrocutting is the criterion of an exit of a blade of a vibrocleaver from contact with the destroyed environment. The aim of the study is to establish the time at which the knife comes into contact with compacted snow. The obtained results of the calculations make it possible to set the values at which the mode of «vibration cutting» is set and to select parameters of the hydraulic accumulator, which ensures the movement of the blade of the vibrocleaver of the compacted snow.

Performance of road cars is criterion which connects all stages of life cycle of the road and life cycle of road cars. To ensure the life cycle of roads and the life cycle of road machines, at least three conditions must be fulfilled: the completion of the necessary volumes of pre-construction work on time; Maintenance of road machines at the level enabling them to perform technical tasks; The quality of the scope of work should meet the requirements. Thus, one of the objectives of the work carried out was to study the relationship between the volumes of work carried out by road machines while ensuring the life cycle of roads and the stages of the life cycle of road machines through their performance. The purpose of this article is to show how the technical, operational planned (necessary) and actual performance of road machines was determined when working at specific facilities during the experiment.

The criteria for the rejection of ropes of Passenger cable cars are considered, the main defects of load-bearing, traction and load-bearing cables, possible causes of their occurrence and the criteria for rejection are described. The theoretical substantiation of defects associated with plastic deformations of the rope wire (extrusion of wires, stratification, twisting of the rope, kinks, breaks, basket shape) is given. The methods of monitoring the state of ropes in the process of operation of passenger cable cars are considered. Recommendations are given to improve the level of security by using remote monitoring systems based on modern digital information technologies. The criteria for rejecting the ropes of passenger cable cars are proposed: according to the undulation, wear and breakage of the outer wires of the ropes, which are absent in the current Federal Norms and rules «Rules for the safety of passenger cable cars and funiculars».

The article deals with the issues of modeling the stress-strain state of a semi-trailer designed to accommodate the equipment of a mobile transport and overloading rope complex. The main computational cases are determined. Geometric and computational finite element models are constructed, taking into account the features of the metal structure and suspension elements. The method of gluing elements of the grid model is applied. On the basis of the performed calculations, conclusions are drawn about the compliance of the developed structure with the requirements of strength and rigidity.

Asphalt concrete of various brands is mainly used as a road surface. The quality and durability of the coating depends on its density. To achieve the required density of the asphalt concrete pavement, road rollers are used. The working body of the roller is a metal drum or a set of pneumatic tires. The article discusses the process of the asphalt concrete mixture compaction with a smooth metal drum. A rheological model of the force interaction of a smooth drum with a material is adopted, which includes elastic, viscous and plastic elements. The adopted model was corrected taking into account the investigated process of elastic aftereffect that occurs in the asphalt concrete mixture during compaction. The law of behavior of asphalt-concrete mixture with elastic aftereffect is established. A simulation model has been developed to study the behavior of a material in the process of elastic aftereffect. In the course of dynamic modeling, the relationship between the physical and mechanical characteristics of the compacted material with the design and technological parameters of the road roller was established. A statistical analysis of the design parameters of existing models of road rollers has been carried out. The results of the analysis, as well as the obtained dependencies, can be used to designate the technological modes of operation of a set of road rollers when compacting the asphalt concrete pavement of a motor road. Taking into account the elastic aftereffect when assigning the operating modes of the compaction equipment will improve the compaction efficiency, as well as the quality of the resulting coating.

The article is devoted to the method of designing a cone roller for deep compaction of soil used as the working body of a crawler excavator. One of the most important design parameters of a cone roll is the angle of the cone. Known methods allow determining the cone angle for other technological tasks, for example, for loosening frozen soil, and cannot be directly applied to solve the problem. The authors propose an original method for selecting rational parameters of a cone roller head, including the angle of the cone. The method uses a mathematical model of the interaction of a cone roller with compacted soil. In the process of solving the mathematical model are the following parameters: the dependence of the area of the lateral surface of a cone, the dependence of the volume of displaced soil on the contact surface of the cone from the contact patch, the total force, cone force acting on the ground torsional, and axial force in the implementation of the cone, applied by the excavator boom. To identify the optimal value of the cone angle, the function of the volume of displaced soil from the cone angle and the axial force during penetration from the cone angle was studied. As a result, it is determined that the optimal angle of the cone is 240, which will provide the greatest efficiency according to the performance / cost criterion.

The method of electrospark machining has proven itself well in the technology of repair and restoration of parts. The operational properties of coatings obtained by this method depend on the microstructure, chemical and phase composition of the electrode materials. A significant improvement in operational properties, for example, wear resistance, is achieved by the formation of nanostructured coatings using electrodes with a certain content of alloying nanomaterials. It is possible to obtain such materials at the lowest cost by electro-erosion dispersion of machine-building waste. This article discusses the electrodes obtained by sintering bronze powder obtained by the method of electroerosive dispersion. Such materials are new for the process of electrospark machining; therefore, it is important to study and select the optimal application modes, since a qualitative characteristic of the process is the indicator of the transfer of the electrode material to the part, which depends on the processing modes and installation parameters. The aim of the study is to select the modes of the installation for electrospark treatment for optimal deposition of the material, as well as to study the degree of coating increment during electrospark treatment. Coating was carried out using an installation for electrospark treatment mod. «Westron» type AI-007, electrode material was obtained by the technology of spark plasma sintering of bronze powder, surfacing was carried out on steel samples 14 × 14 × 40 mm in size, the work also used an Acculab ALC-210d4 analytical balance and an MG micrometer ?25 GOST 6507-90. All coatings were applied to samples with an equal area in three layers under different processing conditions. After that, the increment in the thickness and mass of the electrode material on the sample surface was measured. Based on the results of the work, formulas were obtained and graphs were built. The most optimal mode of coating with an electrode made of sintered bronze obtained from machine-building waste by the method of electroerosive dispersion was determined, which proves the consistency of this method of obtaining electrode materials.