At present, despite the variety of mini-loaders in terms of purpose and type of work performed, the problems associated with the technology of snow removal from roads and adjacent areas remain relevant. Along with the continuous growth of the municipal machinery fleet, qualitative changes are constantly being made to its working equipment, aimed at increasing the productivity and efficiency of the snow removal process through the introduction of new rational and technical solutions.

Keywords: mini-loader, blade, snow removal, working equipment, snow cover, compaction, hydraulic cylinders, shock absorbers

When designing vibration machines and calculating their dynamic models, great difficulties are encountered. The presence of contacts of the working body with the medium significantly complicates the determination of the dynamic and kinematic parameters of the oscillatory system. This is due to the fact that different layers of the vibrated medium have different vibration amplitudes, therefore it is necessary to introduce the concept of "mass attachment", which is, as it were, rigidly attached to the working body and vibrates with its amplitude. It is difficult to determine the coefficients of elastic and dissipative resistance of the elements of the oscillatory system. The authors propose an experimental-theoretical method for determining all parameters of an oscillatory two-mass system with two degrees of freedom, which can be easily extended to more complex linear dynamical systems.

Keywords: vibration machines, vibrating system, road-building machines, free vibrations, phase-frequency response

The activities of enterprises in the field of pipeline transportation of oil and oil products are often associated with emergency situations. Rescue teams need to cover significant distances in off-road conditions. The speed of the unit's response depends on the design of devices that increase the cross-country ability of vehicles. The paper analyzes various devices for increasing the vehicle's cross-country ability and proposes its own solution.

Keywords: rescue teams, oil trunk pipeline, cross-country device, automotive equipment