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Stand tall!

Scientists from the University of Hannover are using Konecranes’ double-girder overhead cranes to investigate the effects of environmental influences on wind turbine components by simulating rough offshore conditions.

The most majestic wind turbines are found between the ocean waves, where extreme forces affect the rotor blades, towers and foundations. Enhancing the durability of turbines running in such conditions requires state of the art work. These pioneering activities are taking place at the University of Hannover’s Test Center for Support Structures.

Simulations made in the Test Center make it possible to observe the fatigue behavior of the supporting and foundation structures of these offshore wind turbines. Researchers then use the results to develop new structure construction methods for higher plant availability and increased cost-effectiveness.

For the required work processes, the Test Center needs powerful cranes. Therefore, the University of Hannover placed four Konecranes double-girder overhead cranes in the facility. Two of the cranes were recently installed for lifting heavy wind turbine components. The component parts are made of solid steel, and can measure up to 7 meters in length and weigh as much as 3 tons. One of the cranes is equipped with a gripper, which allows the 10-meter-deep test pit to be filled with sand to effectively simulate the seabed.

So, let the wind blow. The turbines are ready!

3 Facts

  1. The Test Center for Support Structures in Hannover offers two large-scale facilities for testing all types of support structures. In the 10-meter-deep sand filled pit, large models of support and foundation structures for offshore foundations can be loaded mechanically and investigated.
  2. For environmental simulations the Test Center has two new Konecranes double-girder overhead cranes, each with a lifting capacity of 25 tons, a span of 15.35 meters and a lifting height of 25 meters.
  3. Altogether, four Konecranes overhead cranes are installed in the test hall, workshop and component test stand, together with respective crane paths.

 

Text: Mette Bremer
Photos: Johnér, Konecranes