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Hydraulic elevator
I was in a building where they had a couple of external hydraulic elevators serving 4 floors. It would appear that the lift cars sat on long steel poles which were pushed up from the hydraulic rams and then sank back in on the downward journey.
If this is the case then surely the ram must be in a shaft sunk into the ground the equivalent distance of at least 4 floors with the associated pipe work and room for maintainence.
Can anyone tell me if this is correct or is there a simpler way of doing it?
Answers
No best answer has yet been selected by fly258. Once a best answer has been selected, it will be shown here.
For more on marking an answer as the "Best Answer", please visit our FAQ.Two possibilities spring to mind:
1) Have you ever seen a telescoping car radio ariel? The hydraulic ram might be in several shorter sections, all fitting inside one another.
2) The "Long steel poles" you describe could actually be the hydraulic cylinder itself. The elevator car could be attached to a piston seated inside the cylinder.
Jack Regan,
there were no ropes in sight and the ram definately was a ram and not ropes, it showed all the signs of a hydraulic ram with longitudinal wear marks and marks around the circumference where it stops at each floor. At the base, set in the floor was the top of a huge cylinder with what looked like a large hydraulic hose coming out of it.
Hi fly
It must have been a sunken ram then, these are becoming less common as having a one peice ram sunk into the ground is a painstaking and expensive option and as you have seen are mainly used on scenic lifts where everything is on show as it is more pleasing to the eye....telescopic rams are also used but these have a tendency of leaking oil as the more stages used the thinner the oil seals becomes.There are many ways of making lifts go up and down.
read more:
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