ALL TERRAIN CRANES Ӏ SECTOR REPORT
bridges and in inner cities. With 1,760 lb (0.8t) of ballast, the crane reaches a total weight of 94,800 lb (44t) with axle loads of 19,840 lb (9t). With 9,700 lb (4.4t) of ballast, it can travel with 22,050lb (10t) of axle load and a total weight of 105,800 lb (48t). With an axle load of 26,450 lb (12t), the new can carry up to 37,250lb (16.9t) of counterweights. At 75 percent of the maximum ballast of 49,600lb (22.5t), this is, Liebherr says, a new record for mobile cranes worldwide. This allows the new LTM 1100-5.3 to perform most of its jobs as a taxi crane without additional ballast transport. Even with maximum ballast, the axle loads of 29,760 lb (13.5 t) are low and evenly distributed across all axles. The new LTM 1100-5.3 has a narrow width of 2.55m. It is the first five-axle mobile crane worldwide based on this narrow design. The new LTM 1100-5.3
offers operators in California a particularly big advantage: it is the first and, so far, the only five-axle all-terrain crane to receive Cal- trans approval. This means that it is road-legal in the normal driving
The first LTM
1110-5.2 was sold to Riga Mainz
condition, with the telescopic boom over the front. Operation with a dolly is not necessary. This, Liebherr says, will allow the crane to compete with truck cranes, which remain popular in the US. As well as the roadability of this model, the other key new feature of both cranes is the LICCON3 control system. Liebherr’s use of programmable control systems dates back to the 1980s. The first models to use electronic rated capacity indicators used third party systems. Liebherr introduced its first in-house system, LICCON, shortly after. This system came out at the same time that the first PCs were reaching the homes of tinkerers and early adopters. It was programmable, in a way that previous systems hadn’t been. These had relied on punch cards, with each configuration of each crane requiring its own cards. Some big crawlers came with 24 cards, and this presented logistical challenges. The first LICCON system, launched at Bauma in 1989, trimmed down the total number of cards used across Liebherr’s range to 20, from over 100, and set the groundwork for electronically programmable systems.
LICCON2 came out in 2007. This built on developments in the industry that saw much more use of standard components across crane ranges.
The big selling point for
operators was a bluetooth remote control, which could be used during setup, giving the operator a clear, safe, view of the work. The system also enabled the development of systems like VarioBase, which allow the crane to make the most of its lifting capacity, as determined by outrigger position and slewing angle. LICCON3 takes advantage of newly available processing power and data connectivity. This introduces new benefits for fleet owners. We might simplify the history of the LICCON systems by saying that the first made routine operation easier for operators. LICCON2 added new features for setup, a much clearer colour display, and enabled optimal working on non-routine jobs: those where a crane could not easily be set up with all outriggers fully extended. LICCON3 will make possible
detailed tracking of crane utilisation and fuel use. This will provide more evidence to owners to guide their crane sales and purchases, and allow them to report accurately on carbon emissions. For many project owners on big sites this will be key to keeping their Net Zero commitments. Its increased power will allow further optimisation of systems like VarioBase. This might not be a key concern for 100t taxi cranes, but will be vital for the largest and most highly configurable all terrains and crawlers, where any hypothetical paper load chart already runs to novel length, if not that of a multivolume encyclopaedia. And it prepares the
40 CRANES TODAY
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