Magnetic Lifts

Do lifts/elevators that operate by magnets affect ICD's - does anyone know?tks

4 Comments

Pls describe further.....

by donr - 2014-03-18 06:03:56

.....a lift operated by magnets. I'll then try to craft an answer for you.

My lifelong experience has been w/ lifts operated either by humongous electric motors or by hydraulic pumps driven by humongous electric motors.

Donr

Magnetic lifts

by Sylvia1 - 2014-03-18 08:03:10

I am led to believe that The Shard building in London has magnetic lifts and not the usual lifts that operate by hydraulic pumps.Was thinking of visiting and wondered if anyone had any info on this subject.

Pretty decent idea for .....

by donr - 2014-03-19 01:03:16

.....high speed very long travel lifts.

I looked them up on Google. Interesting concept.

The lift cabs are supported by extremely strong magnets that travel along the normal guide rail that either a cable supported lift would have or a hydraulic lift in a low building would have.

This saves the weight of the cables normally used to support the cabs, so it takes a lot less energy to get the cab to the top.

The force to raise the cab & control its descent comes from a big electromagnet associated w/ the big permanent magnets holding the cab in place & guiding it.

1) So - all this magnet stuff is at the top & bottom of the cab at all eight corners. None of it is near the passengers.

2) To be efficient, the magnets are designee so that nearly ALL of the magnetic field flows through steel or iron "Cores." Very little of it escapes into the surrounding space.

3) I do not know what the standards are by law & regulation, but by common engineering sense, were I designing the system I would not let a single stray bit of mag field escape my "Motors" and brakes in the system.

4) They should be safe for your ICD. YOu have to answer this question for your self - what effect does a magnet have on an ICD? I think that all it does is turn OFF the ICD's ability to shock you. The lift trip in the Shard is but 30 seconds according to the Google article on it.

5) You might go there during a light period for crowds & ask them to let you walk in & see what the effect is on your ICD. The magnets are ALWAYS working to just hold the cab still in one position. The amount of force necessary to move it is not that much greater than what it takes to hold it steady.

Sylvia, I hope this helps you out.

I've seen photos of the Shard in general shots of London & seen it in the background of some of the "Sherlock" films. Wondered what it was & until you mentioned it hadn't the foggiest idea what to Google to find out.

Donr

Many Thanks

by Sylvia1 - 2014-03-19 03:03:58

Tks dnr for info you gave on this subject,was very informative and much appreciated.

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