Reduction Worm Gear Back Driving

Do you have a counter balance setup?

I agree with SE.

If you don't have a counterweight you can expect this behavior. In one direction the elevator weight works against the motor, slowing it, in the other, it works with the motor, speeding it up. It is also safer with the counterweight.

Elevator Guidelines In Apartment

I agree with lyn.

This venture is likely to end in tears... equally likely to land someone in prison.

I doubt that any jurisdiction would consider worm gears, even of low lead angle, to be adequate as a brake. You still could equip the motor with a brake, though. A faster motor with larger worm gear ratio might also help. These are just some ideas; there may be a local Code that must be followed carefully.

yes, use a worm gear that machined properly,

your lift should have been tested with a dead load that was heavier than any possible passenger load.

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You are the last one here who should call anyone an "ignorant asshole".

And, if that does'nt make any sense to you, it won't surprise me.

What an unfriendly answer to a first time poster. You should be ashamed of yourself and your answer is not worth anything the way it is written.

Thanks for varied replies.

Well there is no counter weight, and also I am aware of this procedure.

But my asking the question is to discuss and find out possible way to sort out a new type of situation. Always there is a scope for innovation with a new problem. I expect a real brain teasers here, not just a commonsense.

i repent for my sarcastic remarks. your major consideration must be the safety of the passengers. you can't throw a bunch of junk you happen to have laying around and expext to have a safe passenger hoist.

i know this from several very bad experiances involving a 1,000' smoke stack.

i think you should revue the ottis elevator design.

passenger safety should always be the first consideration.

You are right,but there is very limited space,and passenger lift was necessary,so counter weight could not be added. Certainly safety is prime consideration,it can not be compromised