Liebherr LH 120 C Gantry Litronic - Manual (Page 3)

Solution
A long term partnership has developed between Liebherr and
Kaatsch, a specialist in the recycling industry and a technology
leader in scrap recycling as a result of the latter’s good
experience with Liebherr machines. Kaatsch has been using a
fleet of 30 Liebherr handling machines with mobile and crawler
undercarriages for many years for sorting and handling scrap.
In close cooperation with Kaatsch, Liebherr designed and built
a handling machine perfectly tailored to the needs of a modern,
pioneering scrap and material trading company - the Liebherr
LH 120 C Litronic material handling machine which has been in
use since 2009 for loading and unloading vessels.
The machine, which weighs around 135 tonnes and develops
around 400 kW of power, is equipped with a 15 m industrial-
type angled boom, a 12 m industrial-type stick and a grapple
with a capacity of 2.5 m³. This balanced industrial kinematic
ensures a maximum reach of 25.0 m to the centre of the grapple
and a maximum height range of 22.5 m with the grapple open.
In addition at maximum radius throughout the swivel range
of 360° the machine has a load of 7 tonnes on crane hook.
A large undercarriage with a square design provides excellent
stability and enables the user to take advantage of the maximum
handling capacity.
Coordinated components, the majority manufactured by
Liebherr, ensure that the machine is highly economical.
The multi-circuit hydraulic system and the Liebherr diesel engine
have been perfectly tailored to each other with reduced engine
speed and large flow cross-sections in the hydraulic hoses
and hydraulic components ensuring extremely low losses.
Other features such as the „Positive Control“ hydraulic system
ensure fast and precise working movements during the handling
process. Since superimposed operating cycles can be activated
individually but also in combination, this ensures excellent use of
energy. All these innovations are reflected in drastically reduced
fuel consumption.
The LH 120 C material handling machine allows modular,
driver-independent joystick programming. This feature makes it
possible to program individual settings on the machine for each
driver.
Two separate temperature-controlled fans ensure that the
hydraulic system, air, water and fuel are kept at their perfect
operating temperatures. The separate cooler system is
temperature-controlled and thus enhances the machines energy
efficiency. The „Retract arm without pressure“ function is a
major contributor to the machine’s efficiency. The fundamental
benefits of this include:
- Fuel savings - no increase in pressure
on the arm cylinder ring side
- Improved performance - the power saved
can be used for hoisting
- Higher hoist speed - the complete operating
cycle is around 10% faster
- Safety - due to the automatic braking
of the arm whilst it is being retracted
The LH 120 C material handling machine is LiDAT-capable
which means that the customer can record the machine’s
relevant operating data at any time, transfer them and evaluate
them accordingly. In addition LiDAT supplied service interval
information which helps to improve time management for
machine maintenance.