ENERGY Ӏ SECTOR REPORT
A FUTURE-PROOF CRANE FOR TALLER TURBINES AND HEAVIER NACELLES
Dutch crane and transport specialist Verschoor has expanded its fleet with the addition of a Liebherr LR 11000. The company has already used the crane to install two wind turbines at the Vanikum wind farm near the Dutch border. The company purchased the crane in order to
futureproof its capability to instal increasingly taller wind turbines with corresponding hub heights and heavier nacelles. For the work at Vanikum the LR 11000 assembled various components, such as the tower sections, nacelle and rotor blades, at a height of 169 metres. The heaviest single component it lifted was the
gearbox which weighed 117 tonnes. The crane was set up for the lifts with a 168-metre-long main boom and a 15-metre lattice type fixed jib. According to Liebherr, the LR 11000 is characterised
by its economical transport concept and is designed for a transport width of 3.5 metres and a transport height of 3.2 metres. The V-frame with its adjustment distance of 17
metres moves the derrick ballast into the required position and reduces the workload for ballast handling.
platform as part of the Azeri
Central East (ACE) project, the next phase of the development of the BP-operated Azeri-Chirag- Deepwater Gunashli (ACG) oilfield in the Caspian Sea.
ONSHORE WIND WORK Onshore wind turbines may be smaller in scale than offshore but their erection and transport also present considerable challenges. To meet some of these challenges Liebherr is introducing a new crane that is aimed squarely at wind work. Its LG 1800-1.0 offers greater lifting capacity than its predecessor model, the LG 1750. Like that crane the new model has a lattice boom mounted on a wheeled crane chassis. The design, says Liebherr, combines the mobility of a mobile crane with the load capacity of a crawler. The crane can now lift up to 800 tonnes. This is more than its predecessor and just as much as its crawler crane counterpart the LR 1800-1.0. Part of this capacity increase is due to the folding beams it uses. In contract to the crane’s previous model these are not telescopic; this is because the required support base (13 x 13 metres) is sufficient for the LG 1800-1.0 to achieve its load capacities. The new crane does, however,
have one more axle than its previous version, making a total of nine. For these Liebherr is using its standard LTM crane axles. As a result the crane has an individual axle load of just ten tonnes, which makes it suitable for use on public roads worldwide. In situations where even lighter
road weights are required the crane has a flexible system enabling the removal of crane support sections. Carrying just two supports
the total transport weight goes down to 70t; without any supports transport weight is around 50t.
40 CRANES TODAY
Liebherr has developed a quick coupling system for attaching and removing the supports. For special appeal to the wind sector Liebherr has designed the chassis to have a width of three metres for greater manoeuvrability, and the crane the can tackle slopes of up to 25 percent gradient. The LG 1800-1.0 uses a similar
boom system to that of the LR 1800-1.0 and can be used with and without a derrick. There is a main boom up to 180 metres long and a main boom luffing jib combination with up to 108 metres of main boom and 102 metres of luffing jib, with which a maximum hook height of 208 metres can be achieved. Thanks to optimised wind power boom systems, for example, it is possible to work with a boom of 174 metres and an 18-metre-long lattice type fixed jib at hub heights of 180 metres. The WindSpeed Load Charts,
with different permissible wind speeds of up to 13.4 m/s, are designed to provide increased flexibility and safety in gusty operating conditions. The LG 1800-1.0 will be launched in the first half of 2024.
TOWER TRANSPORTATION For onshore wind tower transportation special trailer and semi-trailer manufacturer Faymonville has just launched a wind tower adapter with free rotation device mounted on a 4+7 dolly trailer that can be used for transporting large wind turbine towers weighing up to 100 tonnes on winding roads. The new model fills the last gap in its existing range, says Faymonville. The vehicle is based at the
front on a four-axle dolly with air suspension – optionally with 17.5” or 22.5” tyres – which can be configured for 6x4 and 8x4 or 8x4 and 10x4 tractor units. “For the first time ever, 10x4 machines
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