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Post by John on Jul 20, 2008 10:39:08 GMT -5
Reminds of the tube in London. Check out the tiled floor!! Manrider at Niederberg Colliery in Germany.  |
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Post by John on Jul 20, 2008 10:41:42 GMT -5
A road at the same pit! Not bad for the depths they are at, in excess of 3000ft.  |
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Post by John on Jul 20, 2008 10:43:53 GMT -5
An Eickhoff shearer at one of DSK's collieries.  |
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Post by John on Jul 20, 2008 10:50:20 GMT -5
An EickhoffSL500 shearer at the factory.  I might be wrong, but that looks like a goaf side ventilation system to dissipate gas build up from around the two discs?? |
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Post by dazbt on Jul 20, 2008 14:13:58 GMT -5
An EickhoffSL500 shearer at the factory. I might be wrong, but that looks like a goaf side ventilation system to dissipate gas build up from around the two discs?? Amazing photograph, but there are one or two aspects that I just can't get my tiny mind around ............ help me someone and please explain; 1) why does the face side roller shoe post support look as if it wouldn't be strong enough to support a three legged ferret? 2) if the large diameter drum is cutting roof to floor advancing, what is the much smaller dia drum doing apart from cutting from floor to roof in the floor and chucking everything straight over itself into the track? or is the shearer used in a unidi operation, which would leave a machine's length of cut bottoms in the track at the right hand face end? 3) does that substantial brackets behind the drums indicate that the drums are self sumping? 4) how does the 'ducting' (as substantial as it seems) survive being up so close to the face side coal? 5) assuming that the ductings are air blowers and being positioned where they are and the size they are, I would have thought that to prevent them being coal scoops there would have to be a massive air flow, if that is the case what effect has that amount of air flow on recirculating the dust make? I have sufficient faith in the quality of Eickhoff design and engineering abilities to know that this machine configuration must work, I'm just too thick to see how it can. |
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Post by John on Jul 20, 2008 16:17:58 GMT -5
An EickhoffSL500 shearer at the factory. I might be wrong, but that looks like a goaf side ventilation system to dissipate gas build up from around the two discs?? Amazing photograph, but there are one or two aspects that I just can't get my tiny mind around ............ help me someone and please explain; 1) why does the face side roller shoe post support look as if it wouldn't be strong enough to support a three legged ferret? 2) if the large diameter drum is cutting roof to floor advancing, what is the much smaller dia drum doing apart from cutting from floor to roof in the floor and chucking everything straight over itself into the track? or is the shearer used in a unidi operation, which would leave a machine's length of cut bottoms in the track at the right hand face end? 3) does that substantial brackets behind the drums indicate that the drums are self sumping? 4) how does the 'ducting' (as substantial as it seems) survive being up so close to the face side coal? 5) assuming that the ductings are air blowers and being positioned where they are and the size they are, I would have thought that to prevent them being coal scoops there would have to be a massive air flow, if that is the case what effect has that amount of air flow on recirculating the dust make? I have sufficient faith in the quality of Eickhoff design and engineering abilities to know that this machine configuration must work, I'm just too thick to see how it can. Gee, and I was hoping you'd answer those questions, I'm just a dumb electrician. ;D It's probably a "unidi" machine, as for the other mechanical questions, you should be able to answer those.  |
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