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Post by Wheldale on May 13, 2011 9:27:38 GMT -5
How often are winding wheels changed?
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inbye
Shotfirer.
Posts: 114
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Post by inbye on May 13, 2011 10:55:01 GMT -5
How often are winding wheels changed? Good question.....& I'm not sure of the answer, but, am I right in saying they have replacable wearing "shoes" fitted in the rope groove? |
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Post by dazbt on May 13, 2011 12:21:17 GMT -5
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Post by erichall on Aug 2, 2011 4:56:27 GMT -5
Read through your insert, dazbt, and couldn't find any reference to the actual winding wheel. It's set me thinking. I could not recall anything being said anywhere about pulley wheels, and in my 40 years , the only time I can recall when pulley wheels were changed was on the commisioning of the new No.1 Shaft Winder at Markham Colliery. A new electric winder was to be installed to replace the old steam winder. This required the building of a new headstocks over the exsisting ones whilst the clooiery continued in use. Naturally, on change over, the old ones were removed and the new ones commissioned. I never heard of pulleys being changed, but common sense says that there must be some wear on the pulleys, and, like the winding ropes, they must surely have a 'life'.
This has now become a 'thorn in the flesh'. Does anyone know?
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Post by John on Aug 2, 2011 9:42:41 GMT -5
There has to be something in the 1954 Act regarding sheave wheels... At least one would think there is..
It could also be classed as part of the winding engine rules?? Not really much can go wrong with them, bearings, rope wear or damaged spokes, joint fasteners, all which would come under weekly inspections by the mechanical staff presumably.
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Post by kennygeorge on Feb 14, 2012 19:57:05 GMT -5
The headgear rope sheaves were inspected every 24 hours, bearings checked for noise lubrication, spokes tapped to listen for hollow sounds , indicating cracks.
I don't recall any NDT testing carried out in my time on pit circuit and pit inspection which I was asst engineer. But bear in mind that each pulley was "tailor made" for that rope size.
A full lock coil rope could only be bent over a minimum of 150 times it's diameter,
Further considerations would have to be taken into account with regard to shaft depth which would impact on the "fleet angle"
Regards Ken
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Post by John on Feb 14, 2012 21:43:05 GMT -5
The headgear rope sheaves were inspected every 24 hours, bearings checked for noise lubrication, spokes tapped to listen for hollow sounds , indicating cracks. I don't recall any NDT testing carried out in my time on pit circuit and pit inspection which I was asst engineer. But bear in mind that each pulley was "tailor made" for that rope size. A full lock coil rope could only be bent over a minimum of 150 times it's diameter, Further considerations would have to be taken into account with regard to shaft depth which would impact on the "fleet angle" Regards Ken |
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