Conveyors: power-driven – Conveyor section – Endless conveyor
Patent
1984-08-13
1986-11-18
Valenza, Joseph E.
Conveyors: power-driven
Conveyor section
Endless conveyor
198833, B65G 2318
Patent
active
046230610
DESCRIPTION:
BRIEF SUMMARY
This arrangement relates to belt conveyor arrangements for example, for transporting bulk materials over long distances. Such arrangements are used for removing coal from a mine and transporting rock from quarries.
With very long belts, there is a risk that the belt will move laterally relative to the belt supports. This results in uneven loading on the supports and also in wear of the belt due to slippage.
One type of conveyor arrangement has steel ropes which support the belt, the ropes extending longitudinally of the belt. Each rope is in turn, supported by wheels. The belt has shaped longitudinal ribs for engaging the ropes. An arrangement of this type is disclosed in Great Britain Pat. No. 1,591,461, published June 24, 1981. It is possible for the ribs to become displaced laterally from the rope and an object of this invention is to overcome this problem and to reduce slippage between the belt and the ropes so that wear is reduced.
In accordance with this invention, there is provided a belt conveyor arrangement comprising a belt and a support assembly for carrying the belt, the support assembly including an elongate frame having a roller at each end, at least one of the rollers being driven, the belt being continuous and passing around the rollers, and magnetic means providing attraction forces between the belt and the support arrangement to inhibit movement between the belt and the support arrangement.
The invention is particularly applicable to a conveyor arrangement wherein the support assembly includes a multiplicity of rotatable members carried at spaced intervals along the frame and ropes engaged with the rotatable members, the belt being provided with the magnetic means and the ropes being constructed to be magnetically attracted to the magnetic means. The magnetic means preferably defines recesses for mechanically locating the ropes relative to the belt.
The invention may result in a conveyor belt having formations for mechanically locating the belt on support ropes extending longitudinally of the belt, each formation being defined by magnet members mounted at spaced intervals along the belt.
Reference is now made to the accompanying drawings, wherein:
FIG. 1 is a perspective view of a conveyor arrangement according to the invention;
FIG. 2 is a cross-sectional view of the belt of the arrangement;
FIG. 3 is a perspective view of a magnetic block; and
FIG. 4 is an underside plan view of the top run of the belt.
The conveyor arrangement comprises an elongate frame 11, only the uprights 11a of which are illustrated for clarity. The uprights are interconnected by horizontal members, cross-pieces and diagonal braces (not shown) in conventional manner, e.g. as disclosed in Great Britain Pat. No. 1,591,461, published June 24, 1981. At each end of the frame is mounted a roller or pulley 12, 13, at least one of which is driven, and a continuous or endless belt 14 passes over the rollers. The rollers 12, 13 and the drive means therefor, may also be conventional.
Between the rollers, at spaced intervals, the frame is provided with upper rows 20 of wheels 21 and lower rows 22 of such wheels. The wheels are freely rotatable. Each row 20, 22, which extends laterally of the frame, comprises a plurality of spaced wheels 21, in this example four. Each wheel has a peripheral channel for receiving and guiding a rope 23.
A plurality of continuous steel ropes or cables 23 are provided for supporting the belt 14. Each rope corresponds to one of the wheels 21 in each row 20, 22, and has an upper run 23a supported on the wheels 21 of the upper rows 20 and a lower run 23b supported on the wheels 21 of the lower rows 22.
The upper conveying run 14a of the belt 14 is supported by the upper run 23a of the ropes. As the lower run 14b of the belt 14 leaves the roller 12, it is diverted by rollers 30 from its normal path, twisted, and inverted to return to its normal path engaged on top of the lower runs 23b of the ropes 23. Before the belt reaches the other roller 13, rollers 31 again divert and invert the belt 14 and retu
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Continental Conveyor and Equipment Company, Inc.
Holmes Jonathan D.
Tilberry James H.
Valenza Joseph E.
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