Earth working machine having a rotatable working apparatus axially positionally retainable with high tightening torque by means of a central bolt arrangement, and method for establishing and releasing such retention

US11725351B2 · kind B2 · utility

Assignee

• Wirtgen GmbH

Inventors

• Christian Berning · Euskirchen, DE
• Karsten Buhr · Willroth, DE
• Markus Frankemölle · Hennef (Sieg), DE
• Thomas Lehnert · Oberraden, DE
• Andreas Salz · Linz, DE
• Hardy Wilhelmi · Dattenberg, DE

Key dates

• Filing date: Apr 19, 2022
• Grant date: Aug 15, 2023
• Expiry date: Apr 19, 2042

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16B39/02
• WIPO field: Civil engineering
• WIPO sector: Other fields

Abstract

A bearing component for mounting a replaceable milling drum on an earth working machine includes an annular connecting flange having a central axis. A bearing stem protrudes from the connecting flange axially in a first direction to a first axial end, the bearing stem having an outer surface including at least first and second cylindrical bearing surfaces axially spaced from each other. The bearing stem further includes a centering recess open at a second axial end opposite the first axial end, the centering recess including an opening angle decreasing in steps so that the centering recess tapers in the first direction, the centering recess forming a portion of the central opening.