Influence of Strengthening of Parts on the Reliability of Machines

Abstract

The paper considers the issues of increasing the reliability of agricultural machinery through the use of reinforcing processing of recovered machine parts by plastic deformation, which provides an increase in the quality of their surface layer during recovery. The operational stability of the piston fingers and the upper heads of the connecting rods restored by vibration reinforcement on the engines working in the mechanized agricultural complex was carried out: tractor - agricultural machine - car. Studies have shown that the amount of wear of piston fingers restored by the vibration deformation method is 1.23 times smaller than the traditional method of recovery, which confirms the effectiveness of vibration technology. Technological processes of restoration of discs of diggers of beet harvesters, discs of coulters of grain planers, plow blades with use of vibrating vibrations of the processing tool are developed and put into production. The results of these developments showed an increase of 1.21 times the time of beet harvester harvesting with the diggers' wheels with the vibration-strengthened method; an increase in technical use factor of 1.07 times, compared to new 65G steel wheels. To improve the reliability of the PLN-5-35, PLN-3-35 plows, the technology of restoration of working bodies - blades is developed and introduced into production, which provides for increase of their durability and durability. The coefficient of technical use of the plow units with the blades restored by the developed technology is 1.01 times higher than that of the plow units with the new blades made of 65G steel. The wear rate of the toe, width and thickness of the blade are 1.51 respectively; 1.22 and 1.27 times less than the new 65G steel blades. The results of the study of vibrating reinforcing processing of working bodies of agricultural machinery help to increase their resource, which provides increased reliability of machines.

Multi-row self-balancing device with regard to eccentricity and angular error

“…Therefore, the solution to the problem of dynamic balancing of an unbalanced rotor, for example, using a ball multi-row self-balancing device (SBD) isan urgent problem at present. A sufficient number of scientific publications are devoted to the issues of rotor dynamics with self-balancing devices [1][2][3][4][5][6][7][8][9][10][11][12].…”

“…In [8], a full-scale experiment was conducted and an extensive analysis of the dynamics of the SBD was performed, taking into account external damping, friction forces, inertia forces, and eccentricity of the balancing system.…”