Patent · US Expired

Longwall support control for controlling the movements of longwall support units in the longwall of a mine

US7455367B2 · kind B2 · utility

0Cited by

6References

4Claims

0Family size

Assignee

TIEFENBACH CONTROL SYSTEMS GMBH · DE

Inventors

Ursula Kellermann · Erlangen, DE
Christian Kellermann · Nuremberg, DE
Holger Kellermann · Erlangen, DE

Key dates

Filing date	Dec 11, 2003
Grant date	Nov 25, 2008
Priority date	—
Expiry date	Dec 11, 2023

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE21D23/148
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

A longwall support control for controlling the movements of longwall support units in the longwall of a mine that includes a central control system and a plurality of control units, of which a separate control unit (mining shield control device) is locally and operationally associated to each longwall support unit. The mining shield control devices connect to the central control system and to one another via two bus lines, through which each of the mining shield control devices can be called up for inputting a control command from the central control system or an adjacent mining shield control device. The identical second bus line (parallel bus) permits retransmitting to the adjacent mining shield control device, incoming signals that do not store a code word assigned to the respectively addressed mining shield control device.

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