Substantiation of the necessity of creating three-drum road rollers

Abstract

The technical and economic feasibility of creating three-drum tandem-type road rollers is considered and substantiated. As a result of the analysis of the formula for the performance of a road roller, the possibility of reducing the number of passes of the roller by increasing the number of drums and gradually increasing their vertical loading has been established. A consistent increase in the vertical loading of the drums of the roller as the strength of the compacted surface increases over a wide range is carried out due to the use of an additional controlled section, while the maximum vertical load on the drum exceeds the own weight of the base two-drum road roller due to the installation of an additional controlled section. These innovations provide a significant increase in the productivity of the new three-drum tandem rollers. The technical possibility of creating new three-drum rollers based on modules of standard rollers of less weight is substantiated. At the same time, the dimension along the length of the new three-drum roller increases slightly compared to the length of the standard replacement roller, and the weight decreases quite significantly. The design of the transition plate for connecting an additional controlled section of the roller is simple, its manufacture does not create structural and technological difficulties. Preliminary feasibility studies have shown the feasibility of creating three-drum road rollers based on standard two-drum machines, which is caused by an increase in the productivity of new three-drum rollers while reducing the operating weight of the machine and engine power.