Self-propelled construction machine

US9422677B2 · 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 26, 2015
• Grant date: Aug 23, 2016
• Expiry date: Jan 26, 2035

Classification

• Technology area (CPC E): Fixed Constructions
• CPC primary: E01C23/127
• WIPO field: Civil engineering
• WIPO sector: Other fields

Abstract

A self-propelling construction machine has a machine frame, an operating drum and a drum housing enclosing the operating drum. The drum housing is closed off by a front and/or rear sealing element and/or lateral sealing element. The construction machine has a mechanism for raising and lowering the at least one sealing element. A measuring unit is configured so that the measuring unit measures the forces acting on the sealing element when the sealing element encounters an obstacle. A control unit generates a control signal for raising the sealing element when the force measured by the measuring unit is larger than a predetermined limit value, so that the sealing element is raised.