Hydromechanical planer with cutting and breaking heads

US4239290A · kind A · utility

Assignee

• Gutehoffnungshutte Sterkrade Aktiengesellschaft

Inventors

• Heinrich Goris · Hamminkeln, DE
• Roland Gunther · Wesel, DE
• Kurt Ogorek · Oberhausen, DE
• Karl H. Schwarting · Voerde, DE

Key dates

• Filing date: Jul 12, 1979
• Grant date: Dec 16, 1980
• Expiry date: Jul 12, 1999

Classification

• Technology area (CPC E): Fixed Constructions
• CPC primary: E21C25/60
• WIPO field: Civil engineering
• WIPO sector: Other fields

Abstract

A hydromatic planer particularly for mining materials in a mining seam comprises a planer housing which advantageously has a cutting and breaking head on each end thereof, each of which includes a substantially identical construction. Each cutting head includes a vertically arranged support member which is mounted on the housing of the planer by a parallel linkage so that it may be moved upwardly and downwardly under the control of an adjustment means such as a fluid pressure operated piston and cylinder combination. Each cutting and breaking head also includes a first substantially vertically arranged support member which is connected by the linkage for upward and downward movement relative to the housing and a second support member which is movable relative to the first and mounted on this first in vertical guides for upward and downward movement. A second fluid pressure operated piston and cylinder combination is connected between first and second support members so that they may be shifted relative to each other. A second support member advantageously carries a cutting and breaking wedge which is oriented to engage the mining seam, for example, on a side thereof, and which may …