SECTOR REPORT Ӏ ALL TERRAINS
point for the new crane,” he says. “But right at the start of the development work, we were not really very pleased with the lifting capacity values in telescope mode. The increase compared to the LTM 1400 that is was supposed to succeed was rather disappointing.” Yggve Richter was part of
his team. “At the time we were using a new calculation program which was significantly easier to use than the previous software package. Because of it, I was really motivated to do my absolute best. But I can remember something that our technical director, Dr. Hamme, said when I showed him the first tables at the time said, ‘Yes, but the lifting capacities are not exactly impressive …’ That sent me back to my desk to improve the whole thing again!” Henkel again: “84 metres of boom at the time was a world record for a telescopic mobile crane! It was only possible because of the development of a new ovaloid boom concept. The LTM 1400 had a conventional
The new Liebherr LTM 1110-5.2
rectangular cross-section with all sorts of buckling stiffeners in the boom to provide extra rigidity. But the stiffeners take up space and therefore prevent full retraction of telescopic sections into each other. The ovaloid cross-sections of the LTM 1500 needed almost no buckling stiffeners. And that meant we could build a six-section boom with this enormous boom length, which also had good rigidity, particularly sideways.” 600-odd sales of the crane mean that they got it right. 23 years later, as the 150-t capacity crane ends its unprecedented production run, Liebherr unveil a new version of their 110t-capacity all-terrain. Three completely new features, say Liebherr, distinguish the LTM 1110-5.2 from its 5.1 predecessor version. Twenty three years back
The last LTM 1500-8.1 of all leaves the factory
the LTM 1500 had an early version of LICCON. The new launch incorporates the third generation; it retains the time- tested control features but has a completely new software package
and programming language as well as a faster databus, significantly more storage space and more computing power. “The current LICCON2 control system is reaching the limits of its capacity,” says Nikolaus Münch, Liebherr’s head of the control system department. “During the development of the new control system it was important to us that crane operators who are already familiar with Liebherr cranes would be able to get used to the new control system quickly and easily. At the same time, we must be future-proof as the progress currently being made in microelectronics is immense. Complex applications, such as our VarioBase, which require a great deal of performance data, can now be developed more frequently in the future.” High synergy effects have encouraged Liebherr to introduce a new cab they have developed at the same time as they bring in the LICCON3 control system. A new multifunction steering wheel, f
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