Guides for mineral winning ploughs

US5139313A · kind A · utility

Assignee

• Gewerkschaft Eisenhutte Westfalia GmbH · DE

Inventors

• Heinz-Otto Fiesel · Grafenau, DE
• Christoph Rassmann · Grafenau, DE

Key dates

• Filing date: Aug 13, 1991
• Grant date: Aug 18, 1992
• Expiry date: Aug 13, 2011

Classification

• Technology area (CPC E): Fixed Constructions
• CPC primary: E21C35/12
• WIPO field: Civil engineering
• WIPO sector: Other fields

Abstract

A plough guide is composed of sections built onto the runs of channelling of a scraper chain conveyor. Behind a covering comprising covering hoods pivotable on joints, there are chain guide channels for the plough chain separated by spacers. Underneath each covering hood there is a robust guide beam which forms part of a lower guide for the plough. Each guide beam of solid rolled section is provided at each of its two ends with a recess into which is welded a stout bearing plate which on a level with the spacers. The bearing plates are equipped with open journal bearings for hinge pins positioned at the foot of the covering hood. The hinge pins are integral with hinge pieces, which are welded into recesses at the two ends of the covering hood.