Conveyors: power-driven – Conveyor having means specialized for collecting a load from... – Having buckets specialized to gather load batches
Patent
1980-04-08
1982-06-29
Reeves, Robert B.
Conveyors: power-driven
Conveyor having means specialized for collecting a load from...
Having buckets specialized to gather load batches
37 97, 198518, 198714, 414133, B65G 5700
Patent
active
043368760
DESCRIPTION:
BRIEF SUMMARY
This invention relates to mechanical handling apparatus adapted to reclaim material from a stockpile of material such as iron ore or coal.
Previous mechanical handling apparatus adapted to reclaim material from a stockpile have included a rotatable cylindrical drum some six meters or more in diameter provided with external bucket scoops and mounted on a support structure or gantry running on rails each side of the stockpile. With advancement of the gantry and rotation of the drum the bucket scoops are moved through the material to load the material into the bucket scoops and, with continued rotation, discharge the material either through apertures in the drum to a conveyor extending through the interior of the drum or, as in GB Patent Specification No. 1,326,340, over an outside surface of the bucket scoop next adjacent in the direction of rotation onto a conveyor extending alongside and parallel to the axis of the drum.
The bucket scoops by their form, can only operate in one direction of rotation. This has the result that the reclaimer can operate only in one direction of movement of the gantry and thus requires that a clear plot of land of size equivalent to the size of the stockpile be provided adjacent the stockpile to permit return of the gantry to the initial end of the stockpile, or to an adjacent stockpile, after transfer to a set of rails running over the clear plot.
Furthermore, bucket scoops require the positioning of relatively complex structures on the cylindrical drum, which structures are liable to wear from abrasion arising both from movement into the stockpile and from discharge of material with a sliding motion either through the apertures in the drum or over the outside surface of the bucket scoop next adjacent in the direction of rotation onto a conveyor extending alongside and parallel to the axis of the drum.
It is an object of the invention to provide a mechanical handling apparatus adapted to reclaim material from a stockpile of a simplified construction capable of operation in both directions and having a scoop arrangement less liable to suffer abrasion than the previous arrangement.
According to the present invention there is provided mechanical handling apparatus adapted to reclaim material from a stockpile including a rotatable cylindrical drum mounted on a support structure or gantry running on rails each side of the stockpile in which the support structure or gantry is traversable in either direction over the length of the stockpile and carries first and second transfer conveyors respectively extending at each side of the drum parallel to the axis thereof and the drum rotatable in either direction and is provided with blind scoops or pockets open in opposed directions, such that the blind scoops or pockets open in one direction serve with clockwise rotation of the drum to scoop material from a first portion of the stockpile to one side of the drum and, upon further clockwise rotation of the drum, discharge the material therefrom to the first transfer conveyor at the side of the drum remote from the first portion of the stockpile and the blind scoops or pockets open in the other direction serving with anti-clockwise rotation of the drum to scoop material from a second portion of the stockpile to the side of the drum remote from the second portion and, upon further anti-clockwise rotation of the drum, discharge the material therefrom to the second transfer conveyor.
The invention will now be described, by way of example, with reference to the accompanying drawings, in which:
FIG. 1 is a side elevation of a blending, drum reclaimer machine;
FIG. 2 is a plan view of the machine; and
FIG. 3 is a portion of FIG. 1, to an enlarged scale.
Referring to the drawings, the support structure or gantry includes a bridge box girder 2 supported on a pair of end frames 4, 6 mounted on four powered, articulated bogies 8 running on rails 10 extending the length of a stock yard. The bridge box girder 2 is rigidly secured to one end frame 4 and pivotably mounted on the other end frame 6 to accomm
REFERENCES:
patent: 2528012 (1950-10-01), Mensforth
patent: 3069027 (1962-12-01), Dischinger
Babcock-Moxey Limited
Reeves Robert B.
Watts Douglas D.
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