Liebherr LTM 1250-6.1 - Manual (Page 11)

Electric/electronic crane control with integrated safe load indicator
• Control of winches, slewing gear as well as luffing and
telescoping motions by the LICCON system (PLC control)
• Four working motions can be performed independent from
one another
• Speeds of hoisting/lowering, slewing and luffing are prese-
lectable in 5 steps
• Luffing speed controlled automatically dependent on the
boom length
• Extremely short response times when initiating crane motions
• Hoist gear and slewing gear are operating in a “closed oil
circuit”. This ensures high-precision lifting, lowering and
slewing of loads. Moreover, the potential energy generated
during lowering is not transformed into heat but can be
reemployed for a 2nd motion which results in the particular
advantage of fuel saving and reduced thermal exposure of
the oil than in an open circuit
• Functional test of all essential components by the LICCON
test system
On the carrier
• Eddy-current-brake
• Stow-away box for sling gear and stand timber
• Air-conditioning system
• Trailer coupling D12/D19
• Radio preparation
• Seat heating for driver’s and co-driver’s seat
• Fog lamps
• CD radio set
On crane superstructure/telescopic boom
• 2nd hoist gear
• Air-conditioning system
• Seat heating
• Work area limitation
• Work projector 1 x 70 W on cabin roof
• Two work projectors (Xenon) – electrically adjustable – on
boom base section
• whip line
• Erection jib
• GSM module for remote diagnostics
• Radio preparation
• CD radio set
• Crane data logger
Further optional features by request.
Optional features extend the application spectrum
and increase comfort and safety
Compact, manoeuvrable
and weight-optimized
• Overall length 17.4 m, carrier 15.3 m long
• Large overhang angles, front up to 17°, rear up to 19°
• Smallest turning radius by 5-axle steering
(13.1 m over carrier)
• Axle load equalization (12 t) due to hydropneumatic
suspension ”Niveaumatik”
• In addition to service and parking brake, the following
sustained-action brakes are part of the standard equipment
for safe travel: retarder in the automatic transmission and
engine brake as exhaust brake with Liebherr auxiliary brake
system by valve control (ZBS)
Variable drive and steering concept
• Standard 5-axle steering, 5th and 6th axle are also steerable
independant from axles 1 – 3. During crab steering/diagonal
displacement, axles 3 and 4 are raised hydraulically
• Drive 12 x 6, axles 1, 5 and 6 are driven
• Drive 12 x 8, axles 1, 4, 5 and 6 are driven, 4th axle activatable
for off-road travel
• Automated gear system ZF-TC-TRONIC with converter and
retarder; 12 forward and 2 reversed speeds, automated
control
• Reduced fuel consumption due to a great number of speeds,
sensitive maneuvering due to converter
• Robust transfer case with transfer differential
• Driving axles with differential locks for transverse locking in
off-road ratio
Setting crane on outriggers –
quick, convenient and safe
• Supporting basis 8.84 m x 8.5 m or 8.84 m x 5.58 m
• Fixed lightweight supporting pads (plastic) with lateral
compensation
• Supporting rams with 600 mm travel
• Level control of supporting system, all-automatic levelling
of the crane during the supporting procedure by “push-
button control”
• 2 x 9° lateral inclination even with locked suspension
• Inclinometer (electronic inclination indicator) with two displays
on the carrier and one display on the LICCON monitor in
the crane cab
• 2 supporting force indicators on the control panels on the
carrier and on the LICCON monitor
• Operation of the outrigger system in accordance with the
rules for the prevention of accidents
control block
LICCON
display
screen
luffing ram
single-action
telescoping
ram with
hydraulic
interlocking
device
control levers
3 variable
displacement
pumps
Liebherr Diesel engine D934L A6
transmitters
Liebherr
slewing gear
1 variable
displacement
pump
sensors
Liebherr
hoist winch I
Liebherr
hoist winch II
engine
control
Liebherr
slewing gear
LICCON-
control
15,29
17.41
2.13
4.
0
19°
17°
16.00 R 25 12 t 12 t 12 t 12 t 12 t 12 t
600
8.
5
5.
58
3.
0
6.
56
8.86
R=1
1.40
0.6 R
=
6
.4
2
R=13
.05
R=14
.14
13 2 LTM 1250-6.1 LTM 1250-6.1