Portable conveyor with swivel and fold
First Claim
Patent Images
1. A portable screen, comprising:
- a chassis having a first end and a second end;
a hopper mounted on the chassis;
a screen mounted on the chassis and fed from the hopper;
a fines conveyor located below the screen;
a swivel conveyor mounted at said first end of the chassis, and including a conveyor belt defining a direction of travel, said swivel conveyor including a swivel platform portion which swivels about a vertical axis; and
an arm portion mounted on said swivel platform portion, wherein said arm portion pivots about first and second horizontal axes relative to the swivel platform, said first horizontal axis being cross-wise to the direction of travel to permit the arm to raise and lower, and the second horizontal axis being parallel to the direction of travel, to permit the arm to fold flat against the side of the chassis for transport.
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Accused Products
Abstract
A portable screen includes a conveyor which has a working position in which it extends out the end of the chassis, swivels, raises and lowers, and has a storage position in which it folds flat against the side of the chassis.
51 Citations
13 Claims
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1. A portable screen, comprising:
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a chassis having a first end and a second end;
a hopper mounted on the chassis;
a screen mounted on the chassis and fed from the hopper;
a fines conveyor located below the screen;
a swivel conveyor mounted at said first end of the chassis, and including a conveyor belt defining a direction of travel, said swivel conveyor including a swivel platform portion which swivels about a vertical axis; and
an arm portion mounted on said swivel platform portion, wherein said arm portion pivots about first and second horizontal axes relative to the swivel platform, said first horizontal axis being cross-wise to the direction of travel to permit the arm to raise and lower, and the second horizontal axis being parallel to the direction of travel, to permit the arm to fold flat against the side of the chassis for transport.- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A portable screen, comprising:
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a chassis having a first end and a second end;
a hopper mounted on the chassis;
a screen mounted on the chassis and fed from the hopper;
a fines conveyor located below the screen;
a swivel conveyor mounted at said first end of the chassis, and including a conveyor belt defining a direction of travel, said swivel conveyor including a swivel platform portion which swivels about a vertical axis; and
an arm portion mounted on said swivel platform portion, wherein said arm portion pivots about first and second pivot axes relative to the swivel platform, said first pivot axis permitting the arm portion to raise and lower, and the second pivot axis being parallel to the direction of travel, to permit the belt to fold over and the arm portion to fold flat against the side of the chassis for transport;
and further comprising a first hydraulic cylinder, which controls the pivoting of the arm portion about said first pivot axis; and
a second hydraulic cylinder which controls the pivoting of the arm portion about said second pivot axis, said second hydraulic cylinder extending across the swivel conveyor.
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Specification