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Wednesday 22 April 2020

Self-lifting device inside the building of the Liebherr crane

Self-lifting inside a building is an affordable engineering solution for tall buildings and skyscrapers under construction. First, it is economical, and second, it is safe! This example of a crane is located at a height of 300 m


!🔺Safety instructions for self-lifting inside a building

- Take into account the maximum height of free standing!
- Self-lifting is allowed at a maximum wind speed of no more than
12-13 m / s (~6 points)!
- The crane tower must always be supported by two self-lifting frames!
- The self-raising frame of the upper level of the clamp must be in the area of 
the tower section "B" or, at the lowest distances between 
frames, in the zone of self-lifting sections "D"!
- Take into account the load data (clamping force) and the distance between 
frames!
- Consider the maximum number of tower sections at the top 
clamping point (tower section "B")!
- At each long interruption of the self-lifting process and before 
before the crane starts operating the tower must be mounted on shoes 
and clamped by the self-lifting frames!
Before each self-lifting process: check the balance in the 
turning part of the crane!
During the self-lifting process and while the self-lifting frames are not clamped, 
turning the tap will scream!

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