Road milling machine

US9714488B2 · kind B2 · utility

Assignee

• Wirtgen GmbH

Inventors

• Dirk Franzmann · Hennef (Sieg), DE
• Christian Berning · Euskirchen, DE
• Herbert Ley · Wellsboro, US
• Cyrus Barimani · Rübhausen, DE
• Günter Hähn · Rübhausen, DE

Key dates

• Filing date: Jan 20, 2015
• Grant date: Jul 25, 2017
• Expiry date: Jan 20, 2035

Classification

• Technology area (CPC E): Fixed Constructions
• CPC primary: E01C23/088
• WIPO field: Civil engineering
• WIPO sector: Other fields

Abstract

The invention relates to a road milling machine, with a milling drum housing partially surrounding a milling drum, wherein the opening between the milling drum housing and the surface of the material to be milled can be closed off by a hold-down device. The distance between the axis of rotation and the hold-down device increases in the specified direction of rotation of the milling drum at least over a section of the gap between the milling drum and the hold-down device. The particular configuration of the hold-down device leads to an improvement in transport of the milled material to the transport arrangement. The gap width increasing in the direction of rotation of the milling drum improves material flow with a relatively small power requirement and relatively low wear of the milling drum.