Analyzing the possibility of using hiqhtorque hydraulic motors for rotation of the drums of automatic concrete mixers

Abstract

Goal. The goal is conducting an analysis of the use of hydraulic fluid power for rotating the drums of concrete mixers, in particular, evaluating the possibility of using high-torque low-speed radial-piston hydraulic motors instead of axial-piston motors with planetary gearboxes. The technical level of such hydraulic drives is assessed based on the use of mass to torque and power ratios. The nomenclature, technical characteristics and design features of high-torque hydraulic motors are considered. In particular, compared to previous studies, the nomenclature of the considered hydraulic motors is widespread. Method. The methods of comparative analysis of designs and technical characteristics of axial-piston with planetary gearboxes and high-torque hydraulic motors according to the main technical parameters, in particular, the developing pressure, torque, rotation frequency and power depending on the specific indicators of the mass ratio to the absolute values of these parameters were used. Design features of high-torque hydraulic motors were also considered. Originality. For the first time in the domestic literature, a comparative analysis of the performed high -motion hydraulic motors of the MCR model was carried out. Results and practical usefulness. It is recognized that the modern technical level of high-torque hydraulic motors allows to compete with axial-piston gear hydraulic drives for rotating drums with a concrete mixture of auto-concrete mixers. The given materials will be useful in the educational process for machine-building specialists who study hydraulic fluid power as a means of improving the technical level of various machines and mechanisms.