CRAWLER CRANES Ӏ COMPANY PROFILE
j 8,085tm. With derrick, the 180m system length consisted of a 96m boom plus 84m luffing jib. It employed a 36m derrick with up to 350 t of derrick ballast and used the same ballast trailer as the LR 1750 with radii of 10-18m. For wind turbine erection the LR
1600/2 was offered with a 108m boom in SL3F mode and later with SL 13DFB with 156m main boom and 12m fixed jib. In addition to finding favour with the leading crane rental companies of Europe (including Mammoet, Weldex, Sarens, Hovago, MaxiKraft, Bracht, Schmidbauer, Wiesbauer, Van Adrighem, Roll-Lift, Mediaco and Neeb) it became the favourite across the Atlantic with the likes of Buckner, Bigge, Bragg, Dielco, Mountain Crane and ML Crane
Gruas Aguilar's Liebherr LR 1600/2 working on the new Real Madrid stadium
Group. Further afield, the 600 tonner has captured a significant share of the wind power markets in India and Turkey. In the 750 tonne class sales of the LR 1750 continued to go from strength to strength. In 2008 Sarens took delivery of a new LR 1750 for use on the Thorntonbank offshore wind farm assisting in the erection of some sixty 5Mw turbines on 120m high towers. The 2015 introduction of the LR 1750/2 sparked a highly- favourable market response with some 15 units sold in the first year and approximately 50 units since.
LONGER AND STRONGER BOOMS In the last decade new wind turbine heights installed in Europe, America and elsewhere have
increased in height by between 20 and 40m to accommodate their longer blades. In the past large tele boom cranes could handle installations of turbines weighing 60-80 t on 80-90m towers. In many parts of the world,
those days have gone. Today its towers of up to 140m hub heights and component weights over 100 tonnes. The ever-increasing significance of wind power applications has increased the importance of fixed fly jibs. Of course, these jibs are of lower cost than luffing jibs but also they have grown in capacity. They have become essential to generate the space required to the main boom and deliver greater hoist heights and capacities. In 2015 Liebherr introduced a stronger
28 CRANES TODAY
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