Laxman Pai December 2, Swiss multinational equipment manufacturer Liebherr Group said that its cranes erected the prototype of what is currently the most powerful offshore wind turbine in the world in the Dutch port of Rotterdam. The gondola of the wind turbine, which measures an overall meters in height, has a net weight of tonnes. It was the heaviest load for the two Liebherr crawler cranes used for the job.
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Laxman Pai December 2, Swiss multinational equipment manufacturer Liebherr Group said that its cranes erected the prototype of what is currently the most powerful offshore wind turbine in the world in the Dutch port of Rotterdam.
The gondola of the wind turbine, which measures an overall meters in height, has a net weight of tonnes. It was the heaviest load for the two Liebherr crawler cranes used for the job. In a tandem hoist, the two LR cranes managed a gross load of tonnes and placed the massive component onto the meter tower for the gigantic turbine. The massive tower and the complete gondola with its gigantic dimensions of around cubic meters surrounding sophisticated technology was installed at the port of Rotterdam during the summer.
The prototype was erected on land to make access to the system easier during the test phase. Dutch and global heavy haulage and special transport group Mammoet, which had won the order to erect this wind turbine, used two LR cranes from Danish crane contractor BMS to erect the 12 Megawatt system, using tandem hoists in some cases.
One of the two crawler cranes came straight from the production line at the Liebherr plant in Ehingen to the site. This crane job with an extraordinarily heavy load was absolutely ideal for the set-up for the two crawler crane shown here — the Power-Boom system to increase lifting capacity, for which the main boom is doubled at the bottom, increases the capacity of the lifting gear massively. The upright boom position required in Rotterdam and a boom length of meters meant that this system increased the lifting capacity of these Liebherr cranes by over 70 percent compared to a standard lattice boom system.
As so often on wind power sites, the weather here at the port of Rotterdam dictated the timetable for the major hoists. For example to install the gigantic gondola, the load was positioned between the two crawler cranes for more than two days until the wind conditions finally allowed them to complete the hoist onto the meter high tower. The tonne heart of the system then required around one hour to cover the route to its final position. With the enormous special cross beams and the lifting tackle, the two crawler cranes had to manage a total load of tonnes.
After reaching the final height, the crawler carriers carefully started to move — the two LR cranes had to move around 20 meters with the load on their hooks until the gondola could be positioned precisely on the tower.
Only one of the two cranes had to remain in Rotterdam to install the meter rotor blades a few weeks later. The system was finally completed by the end of October. According to the manufacturer, a turbine of this type should be able to generate 67 Gigawatt hours of electricity every year. That corresponds to the consumption of around 16, households. The double lattice boom sections at the bottom produce a massive increase in lifting capacity values. Image: Liebherr.
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The Liebherr LR is a very powerful hydraulic crawler crane. It comes standard with a maximum lift capacity of tons t , a main boom max length of ft. The Liebherr LR comes with an advanced hydraulic system that works through a double axial displacement pump which supplies the open loop hydraulic system, allowing the simultaneous operation of all functions. It hosts a state-of-the-art self assembly system that allows fast and safe deployments. Still have questions about the Liebherr LR and its impressive capabilities?
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