Telescoping hydraulic cylinder loading during boom equipment rotation

Abstract

Introduction. Currently, hydraulic equipment for telescopic boom equipment is widely used as working equipment for road, construction, hoisting-and-transport and mining machines. However, not all sides of the dynamic loading of the telescoping hydraulic cylinder have been studied. Research aim. The aim of the work is to study the loading of the telescoping hydraulic cylinder (MTC) taking into account the interaction with the telescopic boom during normalized rotation of the boom equipment and during subsidence of the supporting surface of the hoisting machine during the rotation of the working equipment. Methodology. To study the dynamic loading of the MTC, numerical modeling is carried out in the environment of the specialized Motion functional (complex dynamic and kinematic module) of the SolidWorks software package and the SolidWorks Simulation finite element calculation module. Results. The nature of the loading of the MCP elements was established: the time dependences of the angular displacements of the pistons, as well as the forces of counteraction of the shelves of the sections with the MTC, the walls of the sections with the trunnions of the MTC, the piston with the sleeve of the MTC in the horizontal and vertical planes were obtained. The diagram of the stress-strain state of the MCP under normalized and non-normalized loading is established. Design schemes for loading the section and the central heating circuit in the horizontal and vertical planes are developed. Conclusions. The results will improve the reliability of the MTC during operation, increase the reliability of the description of changes in the technical condition of the MTC, more reasonably determine the overhaul periods, and clarify the values of the diagnostic parameters, which contributes to the improvement of the system of maintenance and repair, as well as the design of the MTC.