The Liebherr LTM 1110-5.2 succeeds the LTM 1110-5.1 model with three new features – the third generation of the Liebherr Computed Control (LICCON) crane control system, driver’s cab and ZF TraXon DynamicPerform gearbox. Liebherr is also launching a completely new standard crane design, which marks the future for its all-terrain series.
The third generation of LICCON (LICCON 3) has a completely new software package and programming language as well as a faster databus, significantly more storage space and more computing power. Time-tested hardware components such as the BTT remote control terminal have been included. The touchscreen function on the new large display in the superstructure cab simplifies display of information and control. In addition, LICCON3 cranes are prepared for telemetry and fleet management systems as standard. In the future, crane contractors will be able to view and evaluate all the relevant data using the MyLiebherr customer portal.
Liebherr has developed the modern design of the new driver’s cab in collaboration with designer Jürgen R. Schmid, Design Tech, Ammerbuch (Germany). The modern design features premium materials and timeless lines as well as delivering a whole host of improvements for the crane driver. These include the new multifunction steering wheel, side roller blind on the driver’s door, improved instruments and modules as well as new displays. Options, such as the central locking system with remote key, the cool box and tyre pressure monitoring system deliver additional comfort. A completely new, modern automatic heating and climate control system in both the driver’s and operator’s cabs guarantees comfortable working conditions. A sun sensor detects strong sunshine and automatically adjusts the heating settings. In addition to the standard radio with hands-free facility, a double DIN radio with extended functions is available as an option.
Liebherr was ZF’s partner in the development of the TraXon DynamicPerform and its integration in the drivetrain of mobile cranes. The DynamicPerform clutch module delivers almost zero wear starting and manoeuvring for the modular ZF TraXon gearbox without overheating, and it transmits the engine power via an oil-cooled plate pack that runs in oil. The friction heat generated when starting is dissipated in the clutch oil and supplied to the vehicle’s cooling system via an oil/water heat exchanger. Due to the higher energy and power consumption, together with a calculation model, permanent and almost wear-free manoeuvring is made possible. An implemented clutch protection function also prevents overheating of the clutch and the associated increased wear or destruction of the clutch in extreme load cases. That prevents downtimes and helps to significantly extend the service life of the drivetrain.
Initially, Liebherr plans to install DynamicPerform in its 5-axle mobile cranes on a step by step basis. On mobile cranes with six or more axles, Liebherr intends to continue to use the ZF 12-speed TraXon Torque gearbox with starting converter, which in addition to zero wear manoeuvring, also delivers an increase in torque.