Milling drum for a construction machine, construction machine as well as gearbox unit for a milling drum

US8118369B2 · kind B2 · utility

Assignee

• Wirtgen GmbH

Inventors

• Bernd Holl · Linz, DE
• Stefan Abresch · Dierdorf, DE
• Thomas Lehnert · Oberraden, DE

Key dates

• Filing date: Jan 25, 2011
• Grant date: Feb 21, 2012
• Expiry date: Jan 25, 2031

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T29/49826
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

In a milling drum (2) for a construction machine, in particular a road milling machine (1) or a recycler, with an interchangeable milling tube (4) arranged coaxially to the axis (20) of the milling drum, where the milling tube (4) is supported, by means of a support ring (8), on a support ring mount (12) of a rotating body coupled to a milling drum drive (16), it is provided that the support ring (8) and the support ring mount (12) of the rotating body display several complementary supporting surfaces (22, 24) arranged coaxially to the axis (20) of the milling drum, where the said supporting surfaces (22, 24) have different supporting circle diameters and are arranged behind one another axially with their diameters decreasing incrementally in the pulling direction.