The Danish company has delivered a giant reach stacker, with a maximum lift of 152 tonnes under hook, to Blue Water Shipping in the Port of Esbjerg
The machine has been developed as part of close cooperation over a number of years between N C Nielsen and Blue Water Shipping. The reach stacker has now been commissioned at the harbour area in Esbjerg, where it is used to move wind turbine towers, nacelles and other heavy haulage, as an alternative to using mobiles cranes and trailers.
The SMV4545 does not need support jacks, but this is not possible with N C Nielsen’s NCN 152 330TH design, as the size of the load means the reach stacker cannot be "boomed in" to shift the centre of gravity to a safe fulcrum point before transportation. To overcome this, N C Nielsen came up with "rolling stabilisers" that can be hydraulically lifted and lowered to the ground between the front axle tyres.
The concept was first developed by N C Nielsen for its 85 tonne and 100 tonne converted reach stackers.
It is a completely different approach to the CES VRS design, where the massive 155 tonners supplied to C S Wind in Scotland have a wide fabricated front axle with hub motor wheels and huge tyres. With the variable wheelbase extended to 12m, the machines can pick and carry loads up to 155 tonnes @ 1,850mm load centre.
Speaking of the latest N C Nielsen 152 tonne machine, Søren Messmann, General Manager, Port Services Division at Blue Water Shipping, said: "Now we can handle the heaviest lifting and transport tasks ourselves by combining our machines for the different projects.
"For instance, we can lift objects of up to 250 tonnes with the 152 tonner on one end and one of our 100-tonne reach stackers on the other, or operate with extremely heavy objects hanging on the hook. This sets us up to handle the transport projects of the future."
Strict requirements regarding the new machine’s performance had to be satisfied, and the technical specifications were defined in cooperation with Blue Water Shipping’s customers in the wind turbine industry. The ever larger and heavier wind turbine parts, the bearing capacity of the soil at the storage site, new types of lifting equipment and the desire for the hook to reach all the way to the ground were among the technical challenges.
Per T Nielsen, Technical Director of N C Nielsen, said: "Nearly everything has been scaled up compared to before. Together with our engineers and builders, we have worked intensely to find the formula for the new reach stacker. We succeeded in an innovative cooperation with Blue Water Shipping, where we had to meet the technical specifications and the well-defined wishes regarding the machine’s performance. It’s about making complicated things simple."