Automotive construction engine and lifting column for a contruction engine

US8113592B2 · kind B2 · utility

Assignee

• Wirtgen GmbH

Inventors

• Peter Busley · Linz, DE
• Günter Tewes · Unkel, DE

Key dates

• Filing date: Sep 12, 2006
• Grant date: Feb 14, 2012
• Expiry date: Jul 31, 2028

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B60G2300/09
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A road construction machine includes a machine frame, a working drum and a plurality of ground engaging supports. A plurality of lifting columns are connected between the machine frame and the ground engaging supports. Each of the lifting columns include two telescoping hollow cylinders. A plurality of lifting position measuring devices are provided, each measuring device being coupled with elements of one of the lifting columns, which elements are capable of being displaced relative to one another in accordance with the lifting position of the lifting column in such a manner that a path signal pertaining to a lifting position of the lifting column is continuously detectable by the measuring device. A controller is operably connected to the lifting position measuring devices to receive the path signals and to regulate the lifting positions of the lifting columns in response to the path signals.