Excavator, particularly for continuous strip mining of minerals
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Sep 22, 1987
Grant Date -
N/A
app pub date -
May 16, 1986
filing date -
May 24, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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