Große Turmdrehkrane

[djlivus 0]

Definetely that crane is not a k-5000! It is a mistake on the koreean blog. Only 2 k-5000 were manufactured in a recent past (2002, if i am not wrong).
There is a picture of telescoping proces for a kroll crane on their site.
http://www.krollcranes.dk/additional-equipment.html bearbeitet 22. März 2010 von djlivus

[kim 3]

Thank!! S 46, djlivus,
In 2006 kroll towercrane in the construction of the bridge of my country. Do you have comments about this or do you have more pictures or details do this version.



kim,

bangkok,

[S 46 0]

Thank!! S 46, djlivus,
In 2006 kroll towercrane in the construction of the bridge of my country. Do you have comments about this or do you have more pictures or details do this version.

kim,

bangkok,

Shure.
This is Kroll`s K 320. Data is downloadable from their website.
Here is another, impressive picture of the installation: Reminds of Burj...

[linaprin 1]

Well,
the width of the towersection is defined by the connection - plates and not the main chords.
The climbing cage then uses inwards L - shaped profiles, and slides along the connection - plates,
or better: around them. The thing I do not understand is the position of the hydaulic lifting mechanism.
On your photo ( Macau / Casino, Kroll K1400 !? ) you can see the anchor plates for the lifting mechanism
along the tower - segments, pretty close to the same plane as the connection plates. So there is not much
space inbetween the outer dimension of the cage and the tower segment.
Could it be, that the hydraulic cylinders fit in there ?
Otherwise, they are, at least partially, exceeding the shown dimensions of the cage in my pdf,
which would then mean, that the cage has rectangular dimensions. This would be quite common,
many manufacturers come up with such an solution. The longer side would include the necessary space
for the lifting mechanism, and the chords of the cage could be QR - Profiles then.

Does anyone have photos of a Kroll climbing cage ? Or other helpfull data ?

Hello @S 46,

if I understand you correctly the Kroll climbing cage slides over connection plates, similar like climbing inside the building.
I am quite surprised because sliding steel on steel is not a "modern" solution...at least it makes damages on paint.As far as I know other manufacturers use rollers for climbing cage guideance.
Climbing cage can be rectangular, of course.Slides or rollers must lay on the tower section pillars (or fixing plates like at Kroll) anyway. And because lifting cilinder should be as close to the center of gravity as possible the climbing cage is stretched in one dimension to get lifting cilinder closer to the tower...

Greetings,

Linaprin

[S 46 0]

Hi lina 357 !

No, no. Wrong expression. Excuse my bad english.
The climbing - cage obviously has no contact to the tower or connectionplates by touching them in the way you described...
You are right, most commonly manufacturers use rollers for sliding. Kroll seems to be different,
at least rollers are not possible with the protruding connection plates, and other parts, as you already indicated.
( At least not possible in an uncomplicated way of usage. )
Without knowing much better, the probably solution and my conclusion is already shown on your photo:
The " anchor - plates" for the hydraulic cylinders show up on both sides of the tower segment !
Now, if they use a pair of cylinders ( left and right ( or front and back, as you like ) of the tower ), they can lift the crane in a stable 4 point - manner ( look at the design of the anchor plates ) without using the tower as guidance for the lift about 4m.
Could this be the solution ?
What do you think ?