Very interesting, the ropes run twice over the motor sheave, and this I would think is to improve slip resistance, so as to have better control. Does guarantee that you have nearly a 360 degree wrap of the cable on the pulley, so it is very unlikely to slip, even under a gross overload or emergency stop at full load.
Exactly, double wrap increases traction. The angle here is around 300°, which is pretty good. Double wrap can be found often on faster gearless installs.
Thank you for the video, very much. When I see the liftshaft, there seems to be a floor 13, but the floor indicator in the car goes from 12 to 14. You also mention this in your listing of the floors. So, or the lift doesn't stop at floor 13, or floor 13 is called 14 because of the unlucky number 13.
You're welcome! I totally forgot to mention this in the description. Yes, this building skips floor 13, 14 would actually be 13. We don't do this in Germany or in Switzerland normally but there are very few buildings with no floor 13. There's also a big office building in Zürich where this is the case.
@@TheLiftDragon My thoughts too, as the floor indicator in the car goes in the same tempo 11, 12, 14. In hotels in the United States there is never a floor 13. And here in The Netherlands you hardly see a floor 13, it's always mentioned 14.
Ich hab mal eine Frage. Wie kommst du eigentlich immer in die Schächte und Maschienenräume rein? Machst du das mit Erlaubnis oder wartest du die Aufzüge?
This is called double-wrap and it is to increase the wrapping angle of the ropes around the driven sheave and therefore to increase traction. Very common on fast gearless lifts. It has no effect on the roping ratio and can be used with any ratio.
Haha ja, die wurden später mal gebohrt. Das könnte aber auch damit zu tun haben, dass das Gebäude älter ist als die Anlagen selbst und man anfänglich keine Schachtentlüftung hatte.
sehr interessante Aufnahmen! Der Antrieb mit diesen Motoren gefällt mir! Gut gemacht!
Dankesehr!
Very interesting film. Very nicely presented views of both the engine room and the shaft. And by the way, why is there no thirteenth floor. Regards.
Thank you! Idk why they skipped 13 here, usually this is only found in the US.
Very nice never seen motor arrangement like this before lifts are very fascinating awesome video job well done
You're welcome!
Nicely kept units, little rattly on the door, I assume because of either worn door guides, or dirt in the track.
Indeed. Only the leftmost lift still has the original door operator from the 90s, the other ones have been replaced.
Very interesting, the ropes run twice over the motor sheave, and this I would think is to improve slip resistance, so as to have better control. Does guarantee that you have nearly a 360 degree wrap of the cable on the pulley, so it is very unlikely to slip, even under a gross overload or emergency stop at full load.
Exactly, double wrap increases traction. The angle here is around 300°, which is pretty good. Double wrap can be found often on faster gearless installs.
Thank you for the video, very much. When I see the liftshaft, there seems to be a floor 13, but the floor indicator in the car goes from 12 to 14. You also mention this in your listing of the floors. So, or the lift doesn't stop at floor 13, or floor 13 is called 14 because of the unlucky number 13.
You're welcome!
I totally forgot to mention this in the description. Yes, this building skips floor 13, 14 would actually be 13. We don't do this in Germany or in Switzerland normally but there are very few buildings with no floor 13. There's also a big office building in Zürich where this is the case.
@@TheLiftDragon My thoughts too, as the floor indicator in the car goes in the same tempo 11, 12, 14. In hotels in the United States there is never a floor 13. And here in The Netherlands you hardly see a floor 13, it's always mentioned 14.
Ich hab mal eine Frage. Wie kommst du eigentlich immer in die Schächte und Maschienenräume rein? Machst du das mit Erlaubnis oder wartest du die Aufzüge?
In Deutschland bin ich mit lokalen Kollegen unterwegs, die die Zugänge zu den Anlagen haben.
@@TheLiftDragon alles klar :)
What do the cables double back on themselves when in the motor room, does it change the ratio from a 2:1?
This is called double-wrap and it is to increase the wrapping angle of the ropes around the driven sheave and therefore to increase traction. Very common on fast gearless lifts. It has no effect on the roping ratio and can be used with any ratio.
da,s een mooie installatie 👍
Thank you!
Die Kernbohrungen als Lüftungsöffnung… 😂😂😂 Da hat jemand wieder vergessen, die zu planen, bevor der Rohbau fertiggestellt wurde.😂
Haha ja, die wurden später mal gebohrt. Das könnte aber auch damit zu tun haben, dass das Gebäude älter ist als die Anlagen selbst und man anfänglich keine Schachtentlüftung hatte.