Excavator, particularly for continuous strip mining of minerals

Details Excavator, particularly for continuous strip mining of minerals Excavator, particularly for continuous strip mining of minerals

1986-05-16

1987-09-22

Novosad, Stephen J.

Mining or in situ disintegration of hard material

Hard material disintegrating machines

With material-handling means

299 87, 37190, E21C 3520, E21C 3702

Patent

active

046950982

ABSTRACT:
The excavator for mining minerals, particularly for continuous strip mining of minerals, comprises a track drive, a digging unit with at least one digging roller and a connected conveyor for raw ore formed in the mining operation. The digging roller has a roller core and at least one helical digging and delivery flight. A delivery mechanism is mounted between the conveyor and the digging roller. The delivery mechanism comprises a breaking wedge and a delivery frame with a delivery opening connected to the breaking wedge. The breaking wedge extends from the underside of the delivery frame to the ground, and of course with a breaking surface thereon substantially tangent to the helical digging and delivery flight. There is a gap A between the breaking wedge and the helical digging and delivery flight of thread height H, and the sum of the gap A and the thread height H is less than the width B and the height C of the delivery opening. The conveyor is mounted on the underside of the delivery frame. The helical digging and delivery flight is a breaking tool and has a thread pitch G which is smaller than the width B and the height C of the delivery opening. The digging roller is rotatable in the working direction at the breaking wedge from below to above.

REFERENCES:
patent: 2735667 (1956-02-01), Potvin
patent: 3052455 (1962-09-01), McLaughlin et al.
patent: 3892443 (1975-07-01), Arentzen
patent: 3987564 (1976-10-01), Satterwhite
patent: 4159055 (1979-06-01), Eberle
patent: 4277105 (1981-07-01), Taylor
patent: 4441761 (1984-04-01), Fields et al.
patent: 4616880 (1986-10-01), Nozaki et al.

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