Enercon used a Liebherr 1000 EC-B 125 Litronic tower crane to set up a 149m wind generator at an elevation of around 800m in the Prechtaler Schanze wind farm in the Black Woodland.
With a center elevation of 149m and a blade diameter of 115m, it is the biggest generator ever before to be put up utilizing this tower crane. By offering a 31.50 m jib and a hook height of 164m, the crane was still able to lift 100t making use of four lines. The optimum lots capacity of this crane is 125t in the six-line variation or 100t in the four-line variation.
According to Enercon, just the 1000 EC-B 125 Litronic could be taken into consideration for the tiny, steep hilltop in Gutach, Mühlenbach in the middle of the forest. The location needed for erecting a complete flat-top crane is roughly fifty percent of the normal standing area of various other crane systems.
What’s more, the logistics needed to deliver the 1000 EC-B 125 Litronic are much less than for equivalent crane systems considering that the numerous components of the tower crane are provided in tiny bundles.
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To start with the portable Liebherr LR 1200 spider crane constructed the flat-top crane to its preliminary hook height of 39m, then the tower crane set up the wind generator and also had the ability to go up the wind turbine tower as it increased utilizing its very own climbing equipment.
The tower crane reached a free-standing hook height of 110m and utilizing this solitary guying, it climbed to a last hook elevation of 164m. Both free-standing and also totally climbed up and also guyed were just possible because Liebherr’s flagship flat-top crane was set up on the 1000 HC tower system. The monoblock tower areas with system measurements of 3.40 m x 3.40 m and a size of 5.80 m allow high free-standing erection elevations with brief erection times. The erection of the wind generator took around four weeks.
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Additionally, the crane was fitted with a modifiable undercarriage with an assistance base gauging 18 x 18m after the demand of Enercon for the erection of the initial turbine. The support arms can be altered on this unique undercarriage from the 45 ° position by +/- 5 ° or +/ – 10 °. The impact of the assistance base is after that 20.4 m x 15.2 m, indicating that the crane can be relocated closer to the object given that it requires so small area.