MATHEMATICAL MODELING OF HYDRAULIC DRIVING SYSTEMS OF RUNNING EQUIPMENT IN ROAD CONSTRUCTION MACHINERY

Abstract

Operational efficiency of multi-functional road construction machines depends on
number of working bodies which are simultaneously performing technological operations.
Systems for propulsion pto to the running equipment drive and active working bodies of
road construction machines are developing in the way of using three-axis hydraulic drives.
When designing a hydraulic system for road construction machinery dividing of power
flow from propulsion to the running equipment drive and active working bodies is
considered as rather essential problem. Leading companies do not pay attention to the
development of flow divider designs, preferring to produce more expensive multi-flow
pumps. One of the ways to increase efficiency of multi-functional road construction
machinery is an implementation of running equipment hydraulic driving system based on
a mono-aggregate pump unit which consists of a pump and a volumetric divider of power
fluid flow.