Technical data
Drilling rig
LB 28
Concept and characteristics
Kelly rope
Leader top for Kelly rope
Leader top for auxiliary rope
Auxiliary winch
Kelly bar
Inclination device
Tensioning cylinder for
crowd system
Rotary
Kelly winch
Casing oscillator
Undercarriage
Radius adjustment device
Uppercarriage
Crowd winch
Casing driver
• High engine output with automatic engine speed
control
• Controlled entirely from cab
• Sturdy and solid rig design
• Solid parallel kinematics on the basic machine
• High pull and push forces
• High torque
• Completely self-rigging (no auxiliary machines
required)
• Large range of working tools (all common drilling
works can be performed)
• Stepless leader inclination 5° forward - 15° backward
depending on type of equipment
• Automatic vertical alignment
• High alignment forces
• Simultaneous control of several movements via
Load-sensing multi-circuit hydraulics
• Quick change of rotaries possible through quick
connection
• Equipment design according to latest European
regulations and standards
• All components designed to fulfill the requirements
of a drilling rig
• High manufacturing quality through quality control by
the PDE-system
2 LB 28
Transport dimensions and weights
6990
5895 12100
24985
900
3500
3000
405
3600
1260
Transport with leader
includes the basic machine (ready for operation) with leader, without
working tools (such as rotary, Kelly bar etc.) and without counterweight.
24985
2640
Transport leader
includes the leader without working tools
(such as rotary, Kelly bar etc.).
8070
3000
Dimensions and weights
Leader length 22 m
Weight complete without counterweight
10305
68.2 t
2610
Dimensions and weights
Leader length 22 m
Weight complete
Lower part of the leader
Upper part of the leader with leader top
Counterweight I
24.2 t
1.5 t
4.6 t
2460
1260
900
5895
3500
Transport basic machine
ready for operation, without counterweight.
Transport weight
Weights can vary with the nal con guration of the machine.
44.0 t
3600
405
3000
Counterweight II
3000
660
170
Weights
Counterweight I 10.2 t
Counterweight II
5.2 t
1550
1565
1840
Rotary
Transport weight
BA 280
2465
1760
6.7 t
LB 28 3
Dimensions
Basic machine LB 28
615
25965
5°
15°
5°
5°
1100
4215
5465 4200
R 4265
5895
Technical data
Total height 25.96 m
Max. pull, leader on ground
Max. torque 286 kNm
Stepless rig inclination adjustment
Lateral inclination
Forward inclination 5°
Backward inclination 15°
400 kN
± 5°
900
4700
Operating weight
Total weight with 800 mm 3–web shoes 95.0 t
Total weight with 900 mm 3–web shoes 95.6 t
The operating weight includes the basic machine LB 28 (with rotary
and Kelly bar MD 28/3/30) and 15.3 t counterweight.
4 LB 28
Technical description
Engine
Power rating according to ISO 9249, 350 kW (469 hp) at 1900 rpm
Engine type Liebherr D 846 A7
Fuel tank 700 l capacity with continuous level
indicator and reserve warning
Engine complies with NRMM exhaust certication EPA/CARB Tier 3
and 97/68 EC Stage III.
Hydraulic system
The main pumps are operated by a distributor gearbox. A xial piston
displacement pumps work in open circuits supplying oil only when
needed (ow control on demand).
The hydraulic pressure peaks are absorbed by the integrated
automatic pressure compensation, which relieves the pump and
saves fuel.
Pumps for working tools 2x 350 l/min
Separate pump for kinematics 180 l/min
Hydraulic oil tank 800 l
Max. working pressure 350 bar
The cleaning of the hydraulic oils occurs via an electronically
monitored pressure and return lter.
Any clogging is shown on the display in the cab.
The use of synthetic environmentally friendly oil is also possible.
Control
The control system – developed and manufactured by Liebherr – is
designed to withstand extreme temperatures and the many heavy–
duty construction tasks for which this machine has been designed.
Complete machine operating data are displayed on a high resolution
monitor screen. A GSM modem allows for remote inquiry of machine
data and error indications. To ensure clarity of the information on
display, different levels of data are shown in enlarged lettering and
symbols.
Control and monitoring of the sensors are also handled by this high
technology system. Error indications are automatically displayed on
the monitor in clear text. The machine is equipped with proportional
control for all movements, which can be carried out simultaneously.
Two joysticks are required for operation. Pedal control can be
changed to hand control.
Options :
PDE : Process data recording
Kelly winch with freewheeling
Line pull (effective) 250 kN
Rope diameter 34 mm
Max. line speed 0-79 m/min
Auxiliary winch
Line pull (effective) 100 kN
Rope diameter 20 mm
Drum diameter 400 mm
Max. line speed 0-89 m/min
Crawlers
Propulsion through axial piston motor, hydraulically released spring
loaded multi–disc brake, maintenance free crawler tracks, hydraulic
chain tensioning device.
Drive speed 0 – 1.9 km/h
Track force 622 kN
Width of 3-web track shoes 900 mm
Swing
Consists of triple-row roller bearing with external teeth and two
swing drives, xed axial piston hydraulic motor, spring loaded and
hydraulically released multi– disc holding brake, planetary gearbox
and pinion. Selector for 3 speed ranges to increase swing precision.
Swing speed from 0 – 2 rpm is continuously variable.
Rope crowd system
Crowd force push/pull 400/400 kN
Line pull (effective) 200 kN
Rope diameter 28 mm
Travel 18.5 m
Max. line speed 0-74 m/min
The winches are noted for compact, easily mounted design.
Propulsion is via a maintenance-free planetar y gearbox in oil bath.
Load support by the hydraulic system; additional safety factor by
a spring–loaded, multi–disc holding brake. All line pull values are
effective values. The efciency factor of approx. 25% has already
been deducted.
Noise emission
Noise emissions correspond with 2000/14/EC directive on noise
emission by equipment used outdoors.
LB 28 5
Rotary BA 280 with shock absorber
Gearbox frame
Drive motors
Kelly bar
Shock absorber
Gearbox
Cardanic joint
Casing driver
350
300
250
200
150
100
Torque [kNm]
50
0
0 10 20 30 40 50 60
BA280
Speed [rpm]
Gear 1
Gear 2
• 2-stage-gear drive for flexible adaptation to soil conditions
• Due to stepless speed control via joystick optimum and precise
alignment and rock drilling is possible even at low speed levels;
it is not required to preselect an operating mode
• Kelly shock absorber and rubber bearing relieve the material and
reduce noise emission
• Thanks to the Kelly shock absorber the Kelly bar is guided at
greater length
• Various drive adapters provide compatibility with other systems
6 LB 28
Kelly drilling
A
1900
X
Technical data
Drilling drive - torque 1
Drilling drive - speed
Drilling drive - torque
Drilling drive - speed
st
gear 286 kNm
st
1
gear 30 rpm
nd
2
gear 148 kNm
nd
2
gear 59 rpm
Performance data
Max. drilling diameter* 1900 mm uncased
Max. drilling diameter* 1500 mm cased
*) Other drilling diameters available on request.
Other Kelly bars available on request.
When using a casing oscillator, value X has to be reduced
by 1500 mm.
Display for Kelly drilling
Kelly bars
A X Drilling
depth
(mm) (mm) (m) (t) (mm)
MD 28/3/24 9880 11500 22 5.0 419
MD 28/3/27 10880 10500 25 5.45 419
MD 28/3/30 11880 9500 28 5.9 419
MD 28/3/33 12880 8500 31 6.35 419
MD 28/3/36 13880 7500 34 6.8 419
MD 28/4/36 11450 9900 34 7.25 419
MD 28/4/42 12950 8400 40 8.1 419
MD 28/4/48 14450 6900 46 8.95 419
MD 28/4/54 15950 5400 52 9.8 419
Weight Kelly Ø
LB 28 7
Continuous fl ight auger drilling
Auger with auger guide
Technical data
Drilling drive - torque 1
Drilling drive - speed
Drilling drive - torque
Drilling drive - speed
1
2
2
st
gear 286 kNm
st
gear 30 rpm
nd
gear 148 kNm
nd
gear 59 rpm
Display for continuous ight auger drilling
Performance data
Drilling depth with auger cleaner* 16.5 m
Drilling depth without auger cleaner*
Drilling depth with 8 m Kelly extension,
without auger cleaner
Max. pull force (crowd winch and Kelly winch)
Max. push force (weight of rotar y and auger to be added)
Max. drilling diameter**
*) Without Kelly extension
**) Other drilling diameters available on request.
17.8 m
25.8 m
900 kN
200 kN
1000 mm
8 LB 28
Double rotary drilling
Model DBA 200
Technical data
2
2
1
st
st
nd
nd
st
st
nd
nd
Drilling drive I - torque 1
Drilling drive I - speed 1
Drilling drive I - torque
Drilling drive I - speed 2
Drilling drive II - torque
Drilling drive II - speed 1
Drilling drive II - torque
Drilling drive II - speed 2
Max. drilling diameter*
Max. drilling depth
Max. pull force
*) Other drilling diameters available on request.
Display for double rotary drilling
gear 195 kNm
gear 9 rpm
gear 97 kNm
gear 18 rpm
gear 103 kNm
gear 17 rpm
gear 51 kNm
gear 34 rpm
620 mm
17.8 m
900 kN
LB 28 9
Twin mix equipment
Model DMA 35
Technical data
Drilling drive - torque 1
Drilling drive - torque 2
Drilling drive - speed
Drilling drive - speed 2
Max. drilling depth
Max. diameter*
*) Other diameters available on request
st
gear 35 kNm
nd
gear 17.5 kNm
st
1
gear 55 rpm
nd
gear 111 rpm
17.8 m
700 mm
Display for soil mixing
10 LB 28
Process data recording system - PDE
PDE® colour monitor
for visualization of the PDE
®
data
in the operator's cab
Process data report software
SCULI PDR
PC provided
by the customer
CompactFlash
memory card
External sensors
Printer
Standard
Optional
PDE
®
pile number
12A/23
0 5 10 45 bar
3040506070
5.5 m
5.0 m
4.5 m
4.0 m
3.5 m
Ø60cm
10%
3.78 m
ABC
59%
®
(additional equipment)
The Liebherr process data recording system PDE® constantly records the relevant process data
during the working process.
Recordings management - The recordings generated by the PDE® system can be imported and managed
in SCULI PDR. The data can be impor ted directly from the CompactFlash card or via the Liebherr telematics
system LiDAT. Certain recordings, e.g. for a particular day or jobsite, can be found using lter functions.
Viewing data - The data in each record is displayed tabularly. Combining several recordings provides
results, for example, regarding the total concrete consumption or the average depth. Furthermore, a diagram
editor is available for quick analysis.
Generating reports - A vital element of SCULI PDR is the report generator, which allows for the generation
of individual repor ts. These can be printed out directly or stored as pdf les. In the process the size, colour,
line thickness or even the desired logo can be con gured. Moreover, the reports can be displayed in different languages, e.g. in English and in the national language.
Depending on the application the recorded and processed data are displayed on the PDE® touchscreen in the operator‘s cab, e.g. in the form
of an online cast-in-place pile.
At the same time the PDE® is operated using this touchscreen. The operator can enter various details (e.g. jobsite name, pile number, etc.)
and star t and stop recordings. A recording of ever y star t-stop cycle carried out in the PDE® is established on a CompactFlash memory card.
The PDE® can be con gured in a number of ways, e.g. for the connection of external sensors, for the generation of a simple protocol as graphic le and/or for a printout directly in the operator‘s cab.
Process data reporting - PDR (additional equipment)
Comprehensive data evaluation and generation of reports on a PC is possible using the software
SCULI PDR.
CFA Drilling
job site:
machine ID:
start date:
start time:
stop time:
duration:
motorway
1155xx
05.11.2008
12:16:48
12:48:48
00:32:00
pile number:
maximum depth:
total concrete vol.:
concrete volume pile:
overconsumption:
maximum incline:
E02
2227 cm
15,123 m³
14,531 m³
29,8 %
0,4 °
LB 28 11
Liebherr-Werk Nenzing GmbH
P.O. Box 10, A-6710 Nenzing/Austria
Tel.: +43 50809 41-473
Fax: +43 50809 41-499
crawler.crane@liebherr.com
www.liebherr.com
LB 28 – 10351286 – 03/2010 Subject to change without notice.
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