Asymmetric mineral mining plough

US4280733A · kind A · utility

Assignee

• Gewerkschaft Eisenhutte Westfalia GmbH · DE

Inventors

• Christoph Rassmann · Grafenau, DE
• Alois Hauschopp · Werne, DE
• Gunter Schwolow · Hattingen, DE
• Horst Huss · Essen, DE

Key dates

• Filing date: Dec 3, 1979
• Grant date: Jul 28, 1981
• Expiry date: Dec 3, 1999

Classification

• Technology area (CPC E): Fixed Constructions
• CPC primary: E21C27/32
• WIPO field: Civil engineering
• WIPO sector: Other fields

Abstract

A mineral mining plough for use in asymmetric ploughing, and movable to and fro alongside a conveyor, has a plough body provided with cutter means at its two ends. A first cutter means is arranged to win material when the plough is on the uphill run (that is to say when the plough moves in the opposite direction as the conveyor). A second cutter means is arranged to win material when the plough is on the downhill run. The second cutter means is mounted on the plough body for vertical movement relative to the plough body. This enables the second cutter means to be swung out of its working position (on the downhill run) to lie in a rest position (on the uphill run) in which it is in the path of travel of the first cutter means. This vertical movement of the second cutter means results in a plough of shorter length than known asymmetric ploughs.