Breakdown No. 27
Shifting a Face Conveyor
Scraper Chain Conveyor
1: Collect tools and materials required.
2: Examine the working place.
3: Check the new track.
4: Dismantle the conveyor.
5: Rebuild the conveyor in new track.
6: Apply tension to the chain.
7: Examine the completed work and collect tools.
1: Collect tools and materials required.
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(a) |
Hammer, pick, shovel, spanners, Sylvesters and chains.
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2: Examine the working place.
(See
Breakdown, No. 9, "Examining the working place — at the coalface".)
3: Check the new track.
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(a) |
Make sure the new track is clear of debris.
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(b) |
See that the supports are correctly aligned.
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4: Dismantle the conveyor.
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(a) |
Run the conveyor until the chain is at some suitable place for uncoupling.
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(b) |
Switch off the power and hang cable or air hose in clean, dry place.
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(c) |
Release the tension on the chain.
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(d) |
Uncouple the top chain in suitable lengths for handling — replacing bolts in one side of coupling to avoid loss.
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(e) |
Roll up the lengths of chain and move them over to new track.
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(f) |
Lift off the top pans and rest them against goaf side props in new track.
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(g) |
Uncouple bottom chain in convenient lengths.
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(h) |
Uncouple bottom pans.
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5: Rebuild the conveyor in new track.
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(a) |
Draw over engine end and tension end into new track using Sylvesters.
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(b) |
Couple up bottom pans in new track between engine end and tension end. Ensure pans properly aligned.
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(c) |
Lay out and couple up chain in bottom pans, couple chain to short lengths left round engine end and tension end.
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(d) |
Place top pans in position.
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(e) |
Lay out and couple up chain in top pans to short lengths left round engine end and tension end.
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6: Apply tension to the chain.
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(a) |
Stay down the engine end.
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(b) |
Apply tension to the chain by means of screws attached to tension end structure or by means of Sylvesters set at tension end.
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7: Examine the completed work and collect tools.
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(a) |
Check that the structure has been carefully aligned.
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(b) |
Couple up the cable or air hose, switch on the power.
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(c) |
See that the chain runs properly in the pans, correct where necessary, lifting the pans where required.
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(d) |
When satisfied all is correct switch off the power.
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(e) |
Collect tools and place where safe.
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