Nebojsa Zdravkovic
Assistant Professor
Faculty of Mechanical and Civil Engineering in Kraljevo, University of Kragujevac
Milomir Gasic
Full Professor
Faculty of Mechanical and Civil Engineering in Kraljevo, University of Kragujevac
Mile Savkovic
Full Professor
Faculty of Mechanical and Civil Engineering in Kraljevo, University of Kragujevac
Goran Markovic
Assistant Professor
Faculty of Mechanical and Civil Engineering in Kraljevo, University of Kragujevac
Assistant Professor
Faculty of Mechanical and Civil Engineering in Kraljevo, University of Kragujevac
Milomir Gasic
Full Professor
Faculty of Mechanical and Civil Engineering in Kraljevo, University of Kragujevac
Mile Savkovic
Full Professor
Faculty of Mechanical and Civil Engineering in Kraljevo, University of Kragujevac
Goran Markovic
Assistant Professor
Faculty of Mechanical and Civil Engineering in Kraljevo, University of Kragujevac
A numerical approach for determination of rigidity of the radial‐axial bearing undercarriage frame in hydraulic excavators
Rotating superstructure and undercarriage frame in construction machines are usually connected via large‐diameter radial‐axial bearing. Manufacturers of such large‐diameter bearings define the
conditions to be fulfilled for proper operation and a long lifetime of the bearing. The main condition is the necessary rigidity of the undercarriage frame of the machine, because the bearing itself, having small cross‐section dimensions in comparison to its diameter, is not rigid enough to prevent distortion of the bearing raceway.
The paper presents a numerical approach for determination of rigidity of the radial‐axial bearing undercarriage frame in hydraulic excavators. A certain displacement is imposed on one undercarriage frame support which induces reactions in the others and distortion of the structure.
