CRAWLER CRANES Ӏ LATTICE BOOMS
LR11350, but purchased
the larger model in part due to the increased size of wind turbine components. As the amount of electricity generated by offshore wind increases, the height and weight of offshore wind turbines are becoming larger and larger, says the company. As a result it expects the construction of even larger offshore wind turbines to become impossible with its 1,350-tonne crawler crane. In the Round 1 and Round 2 of
offshore wind turbine construction projects currently under way in Japan the weight of the towers will be different from the European specifications and the Japanese specifications are expected to be even heavier.
Toggenburger’s
Tadano CC 38.650-1 removing parts of old bridge in Niederuster, Switzerland
Hareket’s
2,200t-capacity Sany SCE2200A is being used for mega projects
In addition, the working radius of the cranes is expected to be larger than in Europe because some Japanese ports have less strong wharves than those in Europe, and the cranes must be installed further away from the wharves. Furthermore, if the nacelle weight exceeds 800 tonnes Denzai says it will be impossible to lift the nacelle at the far side of the vessel using a single 1,350-tonne crane. It estimates that two 1,350-tonne cranes will be required.
The LR12500, however, can lift up to 951 tonnes with a working radius of 48m, thus satisfying the requirements with only one crane. The LR11350, meanwhile,
is now being used by Denzai’s South Korean subsidiary Denzai International Projects at the
28 CRANES TODAY
construction of a fertiliser production plant in Port Harcourt, Nigeria – the first of its kind in Africa, says Denzai. Indorama Eleme Fertilizer &
Chemicals awarded the project to Daewoo E&C Nigeria, a subsidiary of Daewoo Engineering & Construction, with Denzai Group providing technical planning, dispatching crane operators, and leasing the LR11350.
CROSSING OVER High-capacity lattice-boom crawlers are also being used in the bridge industry, where whole bridges or component parts tip the scales and need careful handling. In Switzerland, a Tadano CC
38.650-1 was used by Winterthur- based crane service provider Toggenburger + Co to lift and
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