Transition on the fly

US10161088B2 · kind B2 · utility

Assignee

• Wirtgen GmbH

Inventors

• Michael Engels · Montabaur, DE
• Matthias Fritz · Petershohn, DE
• Martin Lenz · Graz, AT

Key dates

• Filing date: Oct 9, 2017
• Grant date: Dec 25, 2018
• Expiry date: Oct 9, 2037

Classification

• Technology area (CPC E): Fixed Constructions
• CPC primary: E01C2301/18
• WIPO field: Civil engineering
• WIPO sector: Other fields

Abstract

A system is provided for varying the width of a molded concrete slab on the fly as the slab is being molded. Position and height of the paving machine relative to an external reference system are determined and controlled using at least two 3D stringless reference objects. An additional sensor provides a signal corresponding to a frame width and thus a concrete slab width, and an actuator controls the frame width actively as the paving machine advances.