WO1997030319B1

WO1997030319B1 - Pusher furnace drop-out conveyor

Info

Publication number: WO1997030319B1
Application number: PCT/US1997/003791
Authority: WO
Filing date: 1997-02-20
Publication date: 1997-09-25

Abstract

A drop-out conveyor (10) for a pusher-type slab reheat furnace (12) having a sloped drop-out is disclosed. The drop-out conveyor comprises a plurality of reciprocating slab carts (20) movable between a first loading position within the furnace and a second discharge position outside of the furnace. A track (24) is provided for supporting each of the carts along the sloped drop-out of the furnace between the loading position and the discharge position. A mechanism (40) is provided for reciprocating each cart between the first position and the second position. The present invention additionally includes a device for removing the slabs from the slab cart to a roller table (16) at the discharge position.

Claims

AMENDED CLAIMS [received by the International Bureau on 13 August 1997 (13.08.97); original claims 1-20 replaced by amended claims 1-10 (2 pages)]

1. A drop-out conveyor for a pusher-type furnace, said conveyor comprising:

at least one reciprocating carriage movable between a first slab loading position and a second elab discharge position;

a slab receiving means attached to each said carriage for receiving and holding a slab thereon;

a track supporting each said carriage for movement at least between said first slab loading position and said second slab discharge position; and

a means for reciprocating each said carriage between said first position and said second position.

2. The drop-out conveyor of claim 1 wherein said slab receiving means includes a substantially planar top and a slab stop extending up from said top substantially perpendicular thereto at a rearward portion thereof.

3. The drop-out conveyor of claim 1 further comprising a piston on each slab receiving means for reciprocating each slab receiving means between a slab receiving position and a slab transporting position.

4. The drop-out conveyor of claim 1 wherein each said carriage includes a slab cart and wherein a plurality of said slab carts is provided, each said slab cart supported on one said track.

5. The drop-out conveyor of claim 1 wherein with said carriage in said discharge position said slab receiving means is adapted to be positioned between adjacent rollers of a roller table.

6 . The drop-out conveyor for a pusher-type furnace having a sloped drop-put conveyor comprising:

a reciprocating carriage;

a slab receiving means coupled to said carriage adapted to be driven up the sloped dropout of the furnace with said carriage to a slab receiving position to receive at least one slab thereon, and adapted to be driven from said slab receiving position by said carriage to a slab discharge position outside of the furnace; and

a means for reciprocally moving said carriage.

7. The drop-out conveyor of claim 6 further including a track supporting said carriage.

8. The drop-out conveyor of claim 6 wherein said slab receiving means further includes a piston for engagingly driving said slab receiving means between a slab receiving position and a slab transporting position.

9. The drop-out conveyor of claim 8 wherein slab receiving means includes a substantially planar top and a slab stop extending up from said top substantially perpendicular thereto at a rearward portion thereof.

10. A method of discharging slabs from a pusher-type slab reheat furnace having a sloped dropout, said slab discharge method comprising the steps of:

a) moving a slab cart to a slab receiving position at an upper end of said sloped dropout;

b) pushing a slab onto said slab cart;

c) moving said slab cart and said slab along said sloped dropout to a discharge position outside of said furnace; and

d) moving said slab from said slab cart to a subsequent processing line.