Patent · US Active

Self-propelled construction machine and method for operating a self-propelled construction machine

US9995009B2 · kind B2 · utility

2Cited by

14References

20Claims

0Family size

Assignee

Wirtgen GmbH

Inventors

Andreas Vogt · Eitorf, DE
Hanjo Held · Johannisberg, DE
Christian Berning · Euskirchen, DE
Cyrus Barimani · Rübhausen, DE

Key dates

Filing date	Dec 1, 2015
Grant date	Jun 12, 2018
Priority date	—
Expiry date	Jun 16, 2036

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE01C23/127
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

A self-propelled construction machine includes a machine frame and an operating drum arranged in a drum housing which is open downwards and is closed on both sides by an edge protector which is adjustable in height. A control assembly determines a reference value for the height of the ground surface relative to the machine frame on which the edge protector rests in a floating position, the height of the edge protector relative to the machine frame and the lowering speed of the edge protector. Furthermore, the control assembly is configured such that the height of the edge protector relative to the machine frame is determined at the point in time at which the lowering speed of the edge protector is less than a specified limit value. Preferred embodiments of the machine furthermore detect the edge protector sinking into the ground, and/or prevent the edge protector from digging into the ground.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.