Liebherr LR 1800 1.0 with HSL4 Boom System Lifts Turbines to 160m Hub Height with Hofmann Kran-Vermietung GmbH – Heavy Lift News
9 Jul 2024

Liebherr LR 1800 1.0 with HSL4 Boom System Lifts Turbines to 160m Hub Height with Hofmann Kran-Vermietung GmbH

Two 5.7MW Nordex wind turbines were erected on a former military site in the Bitburg-Prüm district. The partner for these complicated lifts was the crane company Hofmann based in Paderborn (part of the Bracht Group). The two N163 5.7 turbines with a hub height of 160m were erected by the brand-new Liebherr LR 1800-1.0 lattice boom crawler crane at the end of May 2024.

A radio station that was abandoned over 20 years ago is the ideal location for the two high-performance wind turbines. With a rotor diameter of 163m, they are capable of supplying several thousand households with electricity. Nordex site manager Frank Stanitzek and his team erected the turbines in just two weeks. This was the first job completed by the LR 1800-1.0 high-performance crawler crane, which was specially procured for wind power and large-scale assembly work. This state-of-the-art crawler crane offers a lifting capacity of up to 800t and hook heights of over 200m.

In April 2024, the large crane was transported directly from the Liebherr plant in Ehingen to Prüm and assembled there for the first time in collaboration with Liebherr fitters – in the HSL4 boom configuration with a 165m main boom and a 12m lattice type fixed jib. The new HSL4 system is currently the most powerful system available for the LR 1800-1.0 for wind power installations. With a 174m main mast and 21m lattice type fixed jib, it can erect wind turbines with a hub height of up to 179m.

Crane driver Valerij Ren has been with Hofmann since 2011 and has been operating large Liebherr cranes for five years: “I was previously on the LR 1700-1.0 and can say that Liebherr crawler cranes are generally simple and easy to operate. In particular, the monitors embedded in the armrests for monitoring the winches really make the work easier.”

Hofmann’s dark blue giant, which is powered by a 455-kW Liebherr diesel engine, was ballasted with 170t on the slewing platform, 70t in the undercarriage and a further 400t of suspended ballast. The total ballast is only required for erecting the boom, after which the crane was able to carry out the lifts with only a small amount of ballast on the VarioTray. With a radius of around 28m, a 68t nacelle, 74t drive train and 63t hub had to be lifted for each wind turbine. These comparatively easy-to-assemble tower elements weighed “only” 76t, 73t and 51t, respectively.

 

 

Crane driver Ren emphasises: “We have to completely dismantle the LR 1800-1.0 within a week and reassemble it near the second system in Prüm, 300m from our current location. This can be done with six people and a 100t auxiliary crane. The new Liebherr crawler crane is extremely easy to assemble.”

 

 

The heaviest components are the two 60t crawler carriers. The slewing platform can be quickly connected to the centre section of the chassis thanks to Quick Connection. The large crane system, which weighs around 900t in the version described here, is moved to its new location on around 60 low-loaders. In order to reduce the number of transport vehicles when moving to a new operating location, the 6m and 12m long segments of the main boom, luffing jib and fixed jib can be pushed into each other three times. Following its deployment in the Eifel region, the Blue Giant will install the next generation of Nordex turbines with a hub height of 179m in northern Germany. It won’t be returning to its home base in Paderborn for many years, explains Dieter Abt, Head of Operations at Hofmann, with certainty.

 

 

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