ML Wrote:
On a more lifty-nerd note?
You have lift-poles with a flat top (T-shape) and the ones with a W-shaped extension on top. What is the purpose of the extra metal in these lifts? They don't seem to carry the cable.
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What's the use of the top bit in the bottom pole-drawing.
Hi ML,
Chair/Gondola/T-Bar pylons that are not 'gantry' style like the Wall T-Bar have 5 components,
1) The pole or support, which holds everything else
2) The cross arms, which sit ontop of the pole and hold the sheave trains
3) The sheave trains, which hold the cable down (depression sheave), the cable
supported above the ground (load sheave) or a combination of both. These can
sometimes have cable catchers and sensors fitted incase of de-railment.
4) Access platforms, which not all lifts have
5) The Head-frame, which is what you are referring to. It is the structure that
sits on the Cross-arms and is there to perform multiple functions, but mainly
as a lifting point in case new sheaves need to be lifted up, or if the haul
rope derails and needs lifting back into place. I guess that in Scotland they
weren't seen as a required feature on all of the lifts.
Hope thats useful.
Certainly I've learnt a fair bit about lift infrastructure having worked on tows before.
Edited 15 times. Last edit at 13.34hrs Sun 10 Feb 19 by ML.
