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

US12139861B2 · 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: Jun 26, 2023
• Grant date: Nov 12, 2024
• Expiry date: Jun 26, 2043

Classification

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

Abstract

An earth working machine includes a machine frame, a drive configuration and a milling drum. A bearing stem is attached to one of the drive configuration and the milling drum, the bearing stem protruding 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, a furthest one of the cylindrical bearing surfaces from the drive axial end having a smaller diameter than a next furthest one of the cylindrical bearing surfaces from the drive axial end. A non-locating bearing is connected to the machine frame and configured to receive the first and second cylindrical bearing surfaces of the bearing stem.