GB2102756A

GB2102756A - Flight bar for chain conveyer

Info

Publication number: GB2102756A
Application number: GB08113400A
Authority: GB
Inventors: Ronald Geoffrey Smith
Original assignee: PERKSON FORGINGS Ltd
Current assignee: PERKSON FORGINGS Ltd
Priority date: 1981-04-30
Filing date: 1981-04-30
Publication date: 1983-02-09

Abstract

A chain conveyor flight bar (6) is a forged product of generally T-section and is substantially symmetrical about its die-line (18) so as to be reversible when initially used wear faces (12, 14) along the working edge of the cross-web (10) of the T and along intermediate thicker section portion (16) of the leg (8) of the T become worn, to replace these wear faces by similar wear faces (20, 22). <IMAGE>

Description

SPLCIi=CAYCl Flight bar The present invention relates to flight bars for chain conveyors and to chain conveyors provided with the flight bars.

An embodiment of the invention is illustrated in the accompanying drawing which is a partially exploded perspective view from the underside of a pair of parallel conveyor chains 2 connected (via "D" shackles 4) by a flight bar 6. Such flight bars 6 will be so connected between chains 2 at intervals of e.g. 50 or 100 cms. along the length of the conveyor. The flight bars are pulled by the chains over a support surface extending parallel to the chains to move material (e.g. coal) along the surface. The "D" shack- les 4 are secured to flight bars 6 by nuts and bolts as indicated. Each flight bar as illustrated is of generally T-section with a leg portion 8 and a cross-web 10.

In use as illustrated the chains and flight bar move in the direction indicated by the arrow, and the edge 12 of cross-web 10 and face 14 of the thickenedsection intermediate portion 16 of leg 8 constitute wear faces acting on the material to be conveyed.

Face 14 is preferably disposed a little downstream of edge 12 as indicated. Flight bar 6 is a forged product, preferably or EN19 steel, and is substantially symmetrical about die line 18 so that, when its initially operative side becomes unduly worn or bent, it can be reversed to present wear faces 20 and 22, thus saving the additional cost of replacing a complete flight bar as is currently conventional. Aflight bar 6 is of course readily reversed by unbolting from its "D" shackles and re-bolting thereto in the opposite orientation.

The present invention thus provides a flight bar for a chain conveyor which is substantially symmetrical so as to be reversible to replace its worn upstream operating face(s) by similar unworn or less worn downstream face(s), the flight bar being of generally T-section and preferably being of the general configuration illustrated with a wear face along each working edge of the cross-web of the T and a corresponding wear face provided at an intermediate thicker section portion of the leg of the T. The flight bar is preferably substantially as illustrated in the accompanying drawing. The invention also provides a chain conveyor comprising a pair of parallel conveyor chains linked laterally by flight bars as described above.

Whilst a pair of chains have been illustrated, one at either end of the flight bar, it is of course possible, as conventional in conveyors of the type underconsid- eration, to employ one or more further chains parallel to those illustrated and linked to intermediate portions of the flight bars.

1. A flight bar for a chain conveyor, theflight bar being of generally T-section and being substantially symmetrical so as to be reversible to replace its upstream operating face(s) by its similar downstream face(s).

2. A flight bar according no claim 1 having a wear face along each working edge of the cross-web of theTand corresponding wearfaces provided along both flanks of an intermediate thicker section portion of the leg of the T.

3. A chain conveyor comprising parallel conveyor chains linked laterally by flight bars according to claim 1 or2.

4. A flight bar substantially as hereinbefore described with reference to and as shown in the accompanying drawing.

5. A chain conveyor substantially as hereinbefore described with reference to and as shown in the accompanying drawing.

**WARNING** end of DESC field may overlap start of CLMS **.

Claims

**WARNING** start of CLMS field may overlap end of DESC **. SPLCIi=CAYCl Flight bar The present invention relates to flight bars for chain conveyors and to chain conveyors provided with the flight bars. An embodiment of the invention is illustrated in the accompanying drawing which is a partially exploded perspective view from the underside of a pair of parallel conveyor chains 2 connected (via "D" shackles 4) by a flight bar 6. Such flight bars 6 will be so connected between chains 2 at intervals of e.g. 50 or 100 cms. along the length of the conveyor. The flight bars are pulled by the chains over a support surface extending parallel to the chains to move material (e.g. coal) along the surface. The "D" shack- les 4 are secured to flight bars 6 by nuts and bolts as indicated. Each flight bar as illustrated is of generally T-section with a leg portion 8 and a cross-web 10. In use as illustrated the chains and flight bar move in the direction indicated by the arrow, and the edge 12 of cross-web 10 and face 14 of the thickenedsection intermediate portion 16 of leg 8 constitute wear faces acting on the material to be conveyed. Face 14 is preferably disposed a little downstream of edge 12 as indicated. Flight bar 6 is a forged product, preferably or EN19 steel, and is substantially symmetrical about die line 18 so that, when its initially operative side becomes unduly worn or bent, it can be reversed to present wear faces 20 and 22, thus saving the additional cost of replacing a complete flight bar as is currently conventional. Aflight bar 6 is of course readily reversed by unbolting from its "D" shackles and re-bolting thereto in the opposite orientation. The present invention thus provides a flight bar for a chain conveyor which is substantially symmetrical so as to be reversible to replace its worn upstream operating face(s) by similar unworn or less worn downstream face(s), the flight bar being of generally T-section and preferably being of the general configuration illustrated with a wear face along each working edge of the cross-web of the T and a corresponding wear face provided at an intermediate thicker section portion of the leg of the T. The flight bar is preferably substantially as illustrated in the accompanying drawing. The invention also provides a chain conveyor comprising a pair of parallel conveyor chains linked laterally by flight bars as described above. Whilst a pair of chains have been illustrated, one at either end of the flight bar, it is of course possible, as conventional in conveyors of the type underconsid- eration, to employ one or more further chains parallel to those illustrated and linked to intermediate portions of the flight bars. CLAIMS