Road construction machine, as well as method for controlling the distance of a road construction machine moved on a ground surface

US8672581B2 · kind B2 · utility

Assignee

• Wirtgen GmbH

Inventors

• Christian Berning · Euskirchen, DE
• René Müller · Yerres, FR
• Thomas Schmidt · Plankstadt, DE
• Cyrus Barimani · Rübhausen, DE
• Günter Hähn · Rübhausen, DE

Key dates

• Filing date: May 17, 2011
• Grant date: Mar 18, 2014
• Expiry date: May 11, 2032

Classification

• Technology area (CPC E): Fixed Constructions
• CPC primary: E01C19/004
• WIPO field: Civil engineering
• WIPO sector: Other fields

Abstract

A road construction machine comprising height adjustment devices which adjust the position of the plane of the machine frame in accordance with control signals, where the leveling device measures the distance of the ground surface to the machine frame and controls the height adjustment devices so the machine frame is movable at an adjusted orthogonal distance to the surface; a transmitter is arranged at the machine frame in a rigid fashion, and a receiver is movable, parallel to and synchronously with the machine frame, or vice versa, where the transmitter emits a measuring beam representative of a reference plane, the measuring beam being detectable by the receiver and representing either a plane extending parallel to the machine frame or a plane extending parallel to the ground surface, where the current distance of the machine frame to the current reference location is measurable from the detected position of the reference plane.