Theoretical research pet vibratory compactor

Abstract

Recently, more and more attention is paid to the sealing process in construction, as well as in agriculture. This requires a thorough study of the process of compaction and the choice of more rational ways of implementing it. Sealing is an important operation in the construction of any excavation facility. The quality of the performed operation depends on the reliability, strength, durability, waterproofing of the structure, as well as the duration of its service. Vibration sealing is the most effective sealing method. For its implementation effectively used compact vibrating technology (vibrating cubes, vibroplates), which is intended for compaction of materials and laying of asphalt in areas with a limited area. Compact technology is used for repairs on small streets, sidewalks, cycling paths and other objects where, due to its size, more dimensional technology can not be used. When calculating vibration rollers for static and tired strength, the oscillatory processes of structures and their dynamic loads, at this time, are not taken into account. However, the capacity of the vibration rollers can be increased if the calculations in their design take into account their amplitude-frequency characteristics. The lack of a precise method for calculating modern vibration machines, including rollers, for the surface sealing of building materials and mixtures complicates their design and operation. The study of the vibrational phenomena of mechanical systems and the analysis of vibration equipment, including the rollers, is devoted to the work of a number of domestic and foreign scientists. In these works rollers were described by different calculation schemes and their dynamical systems were considered as one and two mass oscillatory systems, which made it possible to determine the frequency of oscillations and dynamic loads on the constructions considered. To achieve higher accuracy of the results, mechanical vibrations were studied in close connection with electromagnetic processes and as a result a mathematical model of dynamic processes was developed using the Lagrange equation of the second kind, which included both differential equations of motion of the drive system of the roller and the differential equation of the electromagnetic phenomena in the asynchronous engine. According to the results of theoretical studies, graphs are constructed. For the transient processes shown in the charts, characteristic oscillation of the electromagnetic moment, angular velocity and acceleration of the unbalanced shaft. Therefore, the calculation of operating modes of manual vibration roller must be performed on the basis of the equations of the electromechanical state of the system. The theoretical study, with the use of the second-generation Lagrange equation and mathematical software environment MathCAD, dynamics of the mechanism of actuation of the vibrator of a manual vibration roller theoretically, and obtained results that can be used for designing, calculating and determining the dynamic loads of such vibration machines.