US 4,647,112 AGranted

Rotary cutter for gouging out ore from mine faces

AssigneeCharbonnages de France

InventorsJean Demoulin, Walter Hemmer, Reinhard Schiel

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Abstract

The rotor of a cutter for removal of material from a mine face has a large number of externally mounted bits each of which is adjacent to a discrete spray nozzle serving to discharge one or more streams of water at a pressure in the range of several thousand bars. The nozzles receive water from conduits which are installed in an annular chamber between the skirt of the substantially cup-shaped rotor and the adjacent end portion of the drive shaft for the rotor. Groups of conduits receive pressurized water from manifolds which are installed in the chamber and each such manifold receives pressurized water from a discrete conduit which, in turn, receives pressurized water from a distributor rotating at the discharge end of a stationary pipe in an axial bore of the shaft.

Claims22

Dependent claims

A rotary cutter, particularly for gouging out ore from mine faces, comprising a driven shaft having an end portion;

a substantially cup-shaped rotor mounted on and receiving torque from said shaft, said rotor having an annular cup-like skirt surrounding said shaft with spacing and defining a chamber with said shaft, and said skirt having a first end, and a second end spaced from said first end, said skirt being arranged to receive torque from said shaft virtually exclusiviely via said first end, said rotor comprising a sleeve which is surrounded with spacing by said skirt and receives torque from the end portion of said shaft, the end portion of said shaft having an end face and said skirt and said sleeve extending along said shaft in a direction away from said end face, said sleeve having a first end integral with the first end of said skirt, and the first ends of said sleeve and said skirt being adjacent to said end face, said rotor further comprising a cover overlying the end face of said end portion and rigid with the first ends of said sleeve and said skirt;
a plurality of external material removing bits provided on said skirt;
a plurality of external spray nozzles provided on said skirt;
and means for supplying a fluid medium to said nozzles, including supply pipes provided in said chamber.

1 more element

A rotary cutter, particularly for gouging out ore from mine faces, comprising a driven shaft having an end portion and an axial bore;

a substantially cup-shaped rotor mounted on and receiving torque from the end portion of said shaft said rotor having an annular cup-like skirt surrounding said shaft with spacing and defining a chamber with said shaft, and said skirt having a first end, and a second end spaced from said first end, said skirt being arranged to receive torque from said shaft virtually exclusively via said first end;
a plurality of external material removing bits provided on said skirt;
a plurality of external spray nozzles provided on said skirt;
and means for supplying a fluid medium to said nozzles, including supply pipes provided in said chamber, a delivery pipe located in said bore and having a discharge end in the region of the end portion of said shaft, and a distributor rotatable on said delivery pipe with said rotor, said distributor having a plurality of discrete outlets for the fluid medium, and said supply pipes having intake ends receiving fluid medium from the discrete outlets of said distributor.

1 more element

Dependencies are inferred from the claim text.