Construction performances of building and transport mechanization revolving support

Abstract

Different working and construction demands have conditioned the development of bonds between revolving and non-revolving constructions of building and transport mechanization machines. Solutions that have been used so far, basically represent the revolvin and non-revolving construction, carried out in the shape of ''H'' and ''X'' type. Such construction solutions do not contribute the reliable and long-term work of indirect components embedded between the revolving and non-revolving parts in the following machines:excavators, construction pole cranes, truck-cranes and portal cranes. Problem occurs due toinsufficient torsion stiffness of carrying construction, which manifests further on through unfavourable load distribution within the indirect components (big diameter bearings). Tha paper shows the use of the above mentioned two construction types (''H'' and ''X'') as well as the other characteristic construction types in use. Besides the mentioned ones there is also a display of support surface construction to the radial-axial bearing bond, as well as the summary from the comparative analysis of ''H'' and ''X'' construction types, carried out in the paper [6].