Liebherr mobile crane with maximum configuration in a power plant
A new gas flue was recently installed in the large power plant in Mannheim. Two building edges, a lifting height of 102 metres, a large lifting radius and highly constricted working space meant that an LTM 1750-9.1 was ideal for the job. The contractor Hellmich-Kranservice used the new Liebherr crane owned by Wiesbauer GmbH from Bietigheim for this tricky job on the banks of the Rhine
The stainless steel flue measures around 50 metres in length and had to be lifted into the building in sections through an opening in the roof and then assembled inside. A total of four elements were supplied. The longest pipe was 14-metre long and weighed around 6 tonnes. Crane driver KarstenKelm was in charge of the “blind flight” and managed to control the whole thing perfectly following the instructions provided by the fitters inside the power plant.
As a result of the large radius and the height of the building, the LTM 1750-9.1 mobile crane was identified as the perfect tool for the job. “Smaller telescopic cranes such as the AC 700 from Terex would not have managed the job due to the hook height we required,” explained site manager Norman Weitzel. With the full set-up, completely extended with a 19-metre telescopic boom extension and the 91-metre luffing lattice jib, the powerful nine-axle crane from the Liebherr Plant in Ehingen provided everything required for this particular job.
The features of the LTM 1750-9.1 include short set-up times. These are possible due to the fact that the four-piece telescopic boom is carried on the vehicle at all times. A remote control ensures that the crane driver has a perfect view of what is going on throughout the setup process.
That means he can control the crane and also operate functions such as bolting the folding beams. A fast set-up is also enabled by the construction of the fastening points of the components being fitted because the fastening equipment does not have to be changed at any time throughout the set-up procedure.
These features are designed to enhance safety and speed and were used to the full for erection and dismantling the crane at the Mannheim power plant. Although the Wiesbauer team were erecting the mobile crane for the first time in its maximum configuration and therefore to its full height, it only took them around a day and a half. And they managed this, despite the very constricted space available on the site.