Hoisting over obstacles

3 September 2019

Three large Liebherr mobile cranes were sent by crane and heavy haulage logistics contractor Maxikraft, to complete a tricky job at a chemical plant near Halle, Germany.

A 33m-long storage tank weighing over 108t, had to be transported from its assembly area through the factory site to its destination and then installed in the plant. The route through the factory site was blocked by 12m-high pipe bridge.

Two Liebherr mobile cranes, an LTM 1500-8.1 and an LTM 1750-9.1, positioned on both sides of the pipes, managed to complete the job with ease. After the steel tank had previously been moved on a temporary site road, the load was lifted off a low loader by two mobile cranes and carefully hoisted over the obstacle.

A Liebherr LG 1750 lattice boom mobile crane was already waiting at the destination. Together with the LTM 1500-8.1, the storage tank was moved to the vertical and then hoisted by the large crane into the plant over a 16m concrete wall to its final installation location. The powerful crane was fitted with a 70m main boom for this job, which required a radius of 30m.

Due to the constricted space, the LG 1750 could only be set up with a small support base measuring 12 x 12m. The crane was fitted with the optional slewing platform extension to ensure that the gross load of 115t could nevertheless be managed at this radius. This increased the ballast radius by 2.5m and raised the crane’s lifting capacity values.