Factory to wind farm

9 June 2020

Bremen, Germany-based Sommer Kranverleih drove its new Liebherr LTM 1450-8.1 mobile crane from the manufacturing plant straight to its first job at the Vier Berge wind farm in Saxony-Anhalt.

The LTM 1450-8.1 is capable of travelling on public roads with a 12t axle load including its 85m telescopic boom, all its outriggers and the complete hoist winch.

Once at the wind farm, the crane installed cables for bracing concrete towers at a hook height of 100m.

With a 21m fixed boom attached to the telescopic boom, which had been extended to a length of 79.5m, the crane was able to complete the work using just 34t of ballast. It was able to hoist a load of 7t to a hook height of 100m with a radius of 24m.

“VarioBase enabled us to increase the lifting capacity by around 15% for this load case,” said managing director Björn Sommer.

The task was completed in just two days, after which the new 450t crane set off to tackle its next job.

An LTM 1070-4.2 and an LTM 1500-8.1 from Sommer were also in action at the wind farm. “The oldest crane there was built in 2017. We believe in keeping our equipment up to date. The new LTM 1450-8.1 will be replacing a 400t crane and will hopefully also take the strain off our LTM 1500-8.1,” said Sommer.

For even greater flexibility and mobility, Sommer purchased the LTM 1450-8.1 with a completely removable telescopic boom and a feature enabling individual telescopic sections to be detached quickly. This enables the crane’s gross weight and axle loads to be reduced for travelling on public roads, for example to cross bridges with a weight limit and for driving at night. It also means that road permits are often issued more quickly.

This year, in addition to the LTM 1450-8.1, Sommer will also be taking delivery of an LTM 1090-4.2, LTM 1230-5.1, LTM 1160-5.2 and an LTM 1030-2.1.