Sandvik Intellectual Property Ab

Sandvik Mining and Construction Oy

Voest-Alpine Bergtechnik Gesellschaft M.b.h.

Cigar Lake Mining Corporation

Voest-Alpine Zeltweg Gesellschaft M.b.h.

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

Voest-Alpine Bergetechnik Gesellschaft M.b.h.

Bernhard Ebner

Erich Brandl

Peter Kogler

Christoph Haberer

Hubert Kargl

Bruno Reumüller

Barry Schmitke

Alfred J Zitz

Kurt Schaffer

Franz Schoffmann

Guenther Staber

Bruno Reumuller

Gerhard Weinberger

Otto Krassnitzer

Martin Gimpel

Georg Scherz

A cutter head for excavating hard rock materials in rock face includes a carrier attachable to a cutter arm of a cutter machine and a drive shaft rotatably supported by the carrier. The drive shaft is rotatable about a drive axis and has at one end a support portion for mounting disc cutters. A plurality of disc cutters are mounted on the support portion and configured to perform undercutting against the rock face. Each disc cutter is rotatable about a respective support axis, the respective rotational axis of each disc cutter being configured to be substantially transverse to the rotational axis of the cutter head. A mining machine including the cutter head is also disclosed.

Cutting apparatus

A cutting unit for use with a cutting apparatus suitable for creating tunnels or subterranean roadways and the like, includes a cutting arm configured for pivotal movement around at least one pivot axis and a cutting head mounted to the cutting arm. The cutting head includes at least one rotatable cutting element for detaching material from a rock face, and a clearing arrangement mounted to the cutting arm. The clearing arrangement has a clearing blade for pushing detached rock material onto a loading table of the cutting apparatus, the clearing blade being guided by a first guiding mechanism to allow a free movement of the clearing blade in a first direction.

Cutting apparatus using a clearing arrangement

The present disclosure relates to a cutter assembly for an undercutting machine for cutting a rock workface and a method of disassembling a cutter assembly. The cutter assembly includes a shaft supporting structure, a shaft at least partly arranged within the shaft supporting structure, a cutter device arranged on the shaft or the shaft supporting structure, a first rolling element arranged between the shaft supporting structure and the shaft in a floating or slidable manner in an axial direction, and a second rolling element arranged between the shaft supporting structure and the shaft. A line orthogonal to an outer surface of the second rolling element crosses the longitudinal axis of the shaft at a center plane of the first rolling element or within a range of +/&#x2212;25% of an axial extension of the first rolling element from the center plane.

Cutter assembly with rolling elements and method of disassembling

A cutting apparatus suitable for creating tunnels and subterranean roadways includes independently pivoting supports that each carry a respective independently pivoting arm and a rotatable cutting head. Each cutting head, via the supports and arms, is configured to slew laterally outward in a sideways direction and to pivot in a vertical upward and downward direction. The supports and arms are mounted on a linear moving sled carried by a main frame.

A cutting apparatus suitable for creating tunnels and subterranean roadways includes independently pivoting supports that each carries a respective independently pivoting arm and a rotatable cutting head. Each cutting head via the supports and arms is configured to slew laterally outward in a sideways direction and to pivot in a vertical upward and downward direction. The supports and arms are mounted on a linear moving sled carried by a main frame.

Cutting apparatus and method of operating

A cutting apparatus suitable for creating tunnels and subterranean roadways includes independently pivoting supports that each carry a respective, independently pivoting arm and a rotatable cutting head. Each cutting head, via the supports and arms, is configured to slew laterally outward in a sideways direction and to pivot in a vertical upward and downward direction. The supports and arms are mounted on a linear moving sled carried by a main frame.

A cutter assembly for an undercutting machine for cutting a rock workface and a method of assembling a cutter assembly is provided. The cutter assembly includes a shaft mountable on the machine with one end extending from the machine, and a cutter device arranged in connection to the extended end of the shaft. The cutter device is connected releasably and rotationally rigid to the shaft with a locking arrangement. The locking arrangement includes a first locking device arranged to transfer substantially axial loads, and a second locking device arranged to transfer substantially radial loads.

Cutter assembly with cutter device and method of assembling

A cutting apparatus suitable for creating tunnels and subterranean roadways includes independently pivoting supports that each carry a respective independently pivoting arm and a rotatable cutting head. Each cutting head via the supports and arms, is configured to slew laterally outward in a sideways direction and to pivot in a vertical upward and downward direction. The supports and arms are mounted on a linear moving sled carried by a main frame.

In a heading machine () with at least one cutting unit with a rotatably mounted tool holder () with disc tools (), which tool holder is connected in a pivotable manner to the machine frame, the heading machine () has a running gear, in particular a crawler track (), the tool holder () is mounted rotatably on an arm (), which can be pivoted in the vertical direction and the rotational axis () of the tool holder () runs transversely with respect to the longitudinal axis of the arm ().

Heading machine having cutting unit made of disc tools

In a starter car for a drilling device for mining underground deposits, including a base frame () mounted to rotate about a vertical axis () and a starter pipe () mounted to pivot about a substantially horizontal axis () and provided for receiving the drilling device, the starter pipe () is arranged to be displaceable relative to the base frame () transversely to the horizontal pivot axis ().

Base for a drilling device

The joint-pin modular unit for articulately connecting a fork-type or stirrup device () with a connecting eye embracing a joint pin () of the fork-type or stirrup device (), includes at least one seal () provided between the connecting eye and the pin, wherein the joint pin () is rotationally guided in bearing bushes () of the fork-type or stirrup device () and annular seals () are arranged between the connecting eye and the bearing bush end faces located adjacent to the connecting eye. The externally located end faces of the pin () are closed by covers () tightly covering the bearing bushes (), wherein the surface of the pin is surrounded by a lubricant film and at least one substantially axial bore (), and a plurality of radial bores () leading to the surface of the pin, are provided for the supply of lubricant.

Hinge bolt modular unit

In a device for sealing a bore hole and discharging drill cuttings and stripped excavation material, including a housing adapted to receive sealing elements and an opening capable of being connected to the bore hole, one side wall of the housing is provided with at least one opening for the connection of a haulage duct, wherein the housing end side facing the bore hole is equipped with a lockable, particularly screwable, sealing flange () for the detachable connection with a bore hole lining (). The sealing flange () is rotationally and sealingly mounted within the housing and carries projections, in particular an annular brim () which is overlapped by a stop () of the housing.

Device for sealing a drill hole and for discharging drillings or stripped extraction material

In a device for extending and shortening tubings used to transport drill cuttings and stripped material, a tube storage or tube magazine is provided on a frame () capable of being supported on the floor, wherein at least one lifting means () capable of being displaced in the height direction and intended to lift tubes () into a storage position as well as at least one manipulator () intended to position a tube removed from the tube storage into a position in alignment with a laid tube track are arranged on the frame (). The frame includes at least one longitudinal guide () for a telescoping tube () that is capable of being integrated in the tube track.

Device for extending or shortening a network of pipes

In a hewing or cutting roller (,) of variable cutting width, in which two pivotable tool carriers (,) for receiving cutting or hewing tools are arranged on at least one lateral end face (,) of the roller transverse to the axis of the hewing or cutting roller (,), one of the tool carriers carries a locking pin (,) which cooperates with a hook-shaped locking member of the other tool carrier in the extended position of the tool carriers (,).

Extendable end assembly for a mine face cutting roller

A device for feeding cooling fluid into the inside of a shearing drum. The rotary drive of the shearing drum has at least one gear reduction mechanism contained within the hollow shearing drum. Fluid lines are led into the axial region of the shearing drum via a component which is stationary and rigidly connected to the carrier of the shearing drum. The gear reduction mechanism is arranged concentric with the axis and at least one of the fluid lines is led to at least one lateral end face where the fluid line supplies a fluid distributor which in turn distributes the fluid to various jets and fluid lines.

Growing community of inventors

Knittelfeld, Austria

Bernhard Ebner