Statistical analysis of technical specifications of self-propelled reversible plate compactors with different types of engines

Introduction. Reversible plate compactors are soil compaction machines with a flat operating device, having two or more unbalanced shafts and ability to reverse the direction and movement speed. Reversible plate compactors may be driven by gasoline, diesel or electric engines. The efficient operation of reversible plate compactors is only possible with the rational selection of technical specifications, such as oscillation frequency and driving force of the vibration exciter, base plate width, engine power, etc. To establish correlations between the technical specifications of reversible plate compactors, to assess the influence of the engine type on the main parameters and to identify the areas for improving this type of equipment, the statistical analyses was conducted.

Materials and methods. 484 models of reversible plate compactors were scrutinized. The information on the models were obtained from official websites of plate compactors manufacturers and their dealers. Data processing was performed in Microsoft Excel.

Results. The variation ranges of the main parameters were determined and regression equations for correlations between the oscillation frequency of the vibration exciter, the driving force, the width of the base plate, the relative exciting force and the mass of reversible plate compactors were derived. Correlation coefficients were obtained for each regression dependence. The influence of the engine type on the variation range of reversible plate compactors’ main parameters was analyzed.

Conclusion. The type of engine has almost no effect on the parameters of reversible plate compactors in the corresponding mass ranges. Relatively low correlation coefficients let us suggest that manufacturers do not have reliable methods for justification of the technical specifications of reversible plate compactors. The obtained correlations may be recommended for verification of some technical specifications of reversible plate compactors. In recent decades, the values of oscillation frequency and relative exciting force have increased significantly, which affects the nature of interaction between a reversible plate compactor and soil.

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