Voest-alpine Aktiengesellschaft

Voest-alpine Bergtechnik Gesellschaft M.b.h.

Tamrock Voest-alphien Bergtechnik Gesellschaft M.b.h.

Eduard Krivec

Helmut Gradenegger

Alfred J Zitz

Kurt Schaffer

Franz Barnthaler

Egmont Lammer

Roman Gerer

In a driving or mining machine including cutter rolls or drums which are mounted for rotation on a cantilever arm pivotable in the vertical direction, bearings and/or gears are arranged in the axial direction of the cutter rolls or drums between parts of the rolls or drums. The bearings and/or gears are connected with the cantilever arm or an actuating means provided in the cantilever arm. At least one stationary cutter bit is arranged on the cantilever arm in the region of the bearings and/or gears between neighboring parts of the rolls or drums in a plane through which the axis of the cantilever arm passes. The cutter bit has at least two cutting edges, a first cutting edge being provided substantially tangential to the enveloping curve of the rotating bits in the direction of the axis of the cantilever arm and a second cutting edge being provided so as to enclose an angle with the first cutting edge.

Mining machine with core breakers

Installation for shifting won minerals

A mine drift advancing machine includes a cutting arm pivoted at its rear end to the machine chassis for movement about a horizontal axis and at its front end supporting a carrier which is pivoted to the arm for movement about a vertical axis. At least two horizontally spaced apart rocking levers are pivoted at their rear ends to the carrier for swinging about vertical axes and a lever drive is provided for swinging the levers simultaneously in the same directions. The forward end of each lever carrie at least one cutting tool which is rotatable about a generally vertical axis.

Drift advancing or exploiting machine

Apparatus for removing and conveying a heap of debris includes a continuous conveyor supported by a frame and having a charging end and a discharging end; two cantilever arms having outer free ends and having inner ends pivotally supported on the frame for swinging movement about a horizontal transverse arm pivot axis between lowered and raised positions; a transverse crossbeam extending between the outer free ends of the arms and pivoted thereto for swinging movement about a horizontal beam axis; a loading shovel having an open front for shoveling up debris and a back wall which has an upper edge, the shovel being pivoted to the crossbeam for swinging movement about a horizontal shovel pivot axis which is located near the upper edge of the back wall, the arrangement of shovel, crossbeam and arms being such that in the lowered position of the arms, the shovel pivot axis is above the beam pivot axis and the shovel is swingable to a lowered, loading position in engagement with the beam for shoveling in debris and such that in the raised position of the arms the shovel is swingable to a raised position in which the upper edge of the back wall forms a discharge edge for discharging shoveled material to the charging end of the conveyor; and drive devices for swinging the beam about the beam pivot axis, for swinging the shovel about the shovel and for swinging the arms about the arm pivot axis.

Conveying means for removing a heap of debris

Growing community of inventors

Zeltweg, Austria

Eduard Krivec