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ThyssenKrupp Multi – world’s first rope-free elevator [video]

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Re: ThyssenKrupp Multi – world’s first rope-free elevator [video]

#51

Post by rmccue »

leeoniya wrote: post #35

what problem does this solve to justify the crazy expense, complexity and maintenance? the reason elevators exist is because people cannot easily climb 100+ vertical ft, especially while carrying stuff. on the other hand, humans are well adapted for horizontal travel - 15mi per day without breaking a sweat. and when they're not, there are movable walkways like in airports. this whole thing is a solution looking for a…

> what problem does this solve to justify the crazy expense, complexity and maintenance?

Elevators have a natural height limit, due to the weight of the rope, which is why taller buildings need sky lobbies. You also can't (really) increase the capacity of a single elevator shaft with a traditional rope-based system.

Re: ThyssenKrupp Multi – world’s first rope-free elevator [video]

#52

Post by tootie »

londons_explore wrote: post #10
userbinator wrote: post #3

"World's first 3D people mover" might be a more appropriate --- and enticing --- title, because "rope-free" can also refer to hydraulic elevators (which have been around for over a century.)

As far as I can see, the design only allows 2D movement. If you wanted the lift to move toward or away from the camera, you would need either some kind of 2nd attachment point on a different side.

The rendering of the cabin traversing a skyway looked it followed some kind of bend.

Re: ThyssenKrupp Multi – world’s first rope-free elevator [video]

#53

Post by ChuckMcM »

The follow up video https://www.youtube.com/watch?v=8OBHUZetYIU was a bit more interesting. It shows the mockup system running through a variety of transitions.

I'd be interested in why they decided to make the 'track' as complex as they did. The transition nodes are an amazing mechanism but it seems also a likely failure point.

Re: ThyssenKrupp Multi – world’s first rope-free elevator [video]

#54

Post by ChuckMcM »

SomewhatLikely wrote: post #31

Accelerating and decelerating in line with gravity is a lot more forgiving on the occupants than lateral accelerations. Seems like this would put a big limit on horizontal movement.

Depends on whether or not the car can 'tilt' while it is moving sideways (I know they don't show it doing so). If it can then any amount of acceleration can be presented as 'up' and 'down' force to the occupants much like a plane.

Re: ThyssenKrupp Multi – world’s first rope-free elevator [video]

#55

Post by ManuelKiessling »

devdoomari wrote: post #27
martinko wrote: post #2

There already are rope-free elevators, for instance: - the hydraulic elevator ( https://2.bp.blogspot.com/-lFWNDQDN2hE/T3nbR7woCAI/AAAAAAAAB... ) -the Paternoster ( http://www.audioguideportal.de/assets/Foto/thumbnail520x397/... ) The post title is just clickbait for a ThyssenKrupp commercial, plus it only shows animations of these new elevators. Yawn.

I'd rather not ride a paternoster --- seems quite likely to function as an execution machine :(

There are several Paternosters in operation where I work (HBC Europe HQ in Cologne), and they are very cleverly designed in subtle ways to work around the likelihood of an execution.

Re: ThyssenKrupp Multi – world’s first rope-free elevator [video]

#56

Post by jjoonathan »

LoSboccacc wrote: post #39
londons_explore wrote: post #32

My ideal elevator would accelerate at a pleasant 4 m/s^2 and have a jerk not exceeding 4 m/s^3. It would have doors that close instantly when the doorway is clear, and start right away. That would be able to take me up a 100 yard high building in 11 seconds. Why can't real elevators be like that? Why must the doors move slowly, and wait for 5 seconds before even starting moving? Why does the elevator reach a sluggish…

People with reduced mobility or reduced vision will love instant closing guilliotines.

The door closing mechanism is designed with limited power and there's an optical sensor to prevent it from even trying to close on someone. Why wouldn't that still be the case on a fast closing door?

More tellingly: fast closing doors are absolutely a thing, so clearly the safety issues are not insurmountable, but I only see them in more modern/expensive locations. I suspect it's a price grading move and if you wait another century fast-closing doors will be everywhere.

Re: ThyssenKrupp Multi – world’s first rope-free elevator [video]

#57

Post by krylon »

londons_explore wrote: post #32

My ideal elevator would accelerate at a pleasant 4 m/s^2 and have a jerk not exceeding 4 m/s^3. It would have doors that close instantly when the doorway is clear, and start right away. That would be able to take me up a 100 yard high building in 11 seconds. Why can't real elevators be like that? Why must the doors move slowly, and wait for 5 seconds before even starting moving? Why does the elevator reach a sluggish…

Many, many years ago, I read news headline about a man being decapitated by an elevator.

So my guess is that the slowness has to do with safety.

Re: ThyssenKrupp Multi – world’s first rope-free elevator [video]

#58

Post by legulere »

leeoniya wrote: post #35

what problem does this solve to justify the crazy expense, complexity and maintenance? the reason elevators exist is because people cannot easily climb 100+ vertical ft, especially while carrying stuff. on the other hand, humans are well adapted for horizontal travel - 15mi per day without breaking a sweat. and when they're not, there are movable walkways like in airports. this whole thing is a solution looking for a…

It solves the problem that you can only have on cabin (or two) in an elevator shaft. That's very inefficient in super-tall buildings. With horizontal travel elevator cabins can go out of their way and enable much better usage of elevator shafts. Further you become independent of the total length of the elevator shaft. So you drop another limiting factor to super-tall buildings.

Re: ThyssenKrupp Multi – world’s first rope-free elevator [video]

#59

Post by rl12345 »

Beautifully made and well-structured video. In just 120 seconds, they effectively:

I. Set the stage by showing a trend.

II. Describe two premises and derive a logical conclusion from them.

III. Show a product that not only is the objective answer to the conclusion above but also fits perfectly into the initial narrative.

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