Our client assigned Eager.one to design major modifications to one of their sheerlegs.
Read also Bespoke link plates to connect parallel slings
Sheerlegs 1200t Crane design
This sheerlegs was suggested to install tripods (offshore wind turbine foundations) on the seabed. The original boom had the lifting capacity, but could not meet the requirements with respect to lifting height.
A longer boom has been designed along with an extension of the A-frame (back mast) to cope with the decreasing angles of the luffing tackles.
A challenge was to deal with the fatigue of the various components of the sheerlegs, some parts have been designed new, but others should be reused and these already had a fatigue history.
After completing the design with calculations and workshop drawings a design appraisal has been supplied by DNVGL.
Do not hesitate to contact us! T: 0031 30 240 80 60
Senior Project Engineer
Phone: 0031 (0)30 2 40 80 60