PDF Operating Instruction Manual Liebherr LR 1750 Crawler Crane - 1 MB
This operating instruction manual is the complete guide to the Liebherr LR 1750 crawler crane.
It provides exhaustive information on assembly, setup, control systems, and safe operation.
Due to the complexity of this massive crane, a thorough understanding of this manual is mandatory for all operators and assembly crews.
It is the key to safe and efficient project execution.
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LIEBHERR
Crawler crane with lattice mast
LR 1750
LR 1750-010
Operating instructions
BAL-No.: 12821-01-02
Pages: 2059
Works-Number
Date
ORIGINAL OPERATING MANUAL
The operating manual is part of the crane!
It must always be available within reach!
The regulations for crane operation must be observed!
Liebherr-Werk Ehingen GmbH
Postfach 1361
D-89582 Ehingen / Donau
: +49 (0) 7391 502–0
Fax: +49 (0) 7391 502–3399
: [email protected]
www.liebherr.com
1
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Contents
1 Component overview S-pivot section 1533
2 Fastening points 1533
3 Assembling the SLD/SD-boom 1535
4 Operating the crane 1609
5 Disassembling the SLD/SD-boom 1611
5.42 Auxiliary jib 1624
1 Component overview 1625
2 Assembling the auxiliary jib 1627
3 Operating the crane 1641
4 Two hook operation 1643
5 Disassembling the auxiliary jib 1645
5.43 SLK boom 1646
1 Components 1647
2 Assembly 1653
3 Crane operation 1675
4 Disassembly 1677
5.61 Pulley cart 1690
1 Components of pulley cart 1691
2 Installing / removing the roller cart from W-boom head 1693
3 Installing / removing the pulley cart on the adapter for the auxiliary jib 1695
6.00 Additional equipment 1699
6.01 Heater / engine pre-heating 1700
1 Heating the crane operator's cab 1701
6.05 Emergency take-down 1708
1 Emergency operation 1709
2 Emergency operation with assembly plate Variation 1 (V1) 1715
3 Emergency operation of slewing gear(s) with assembly plate Variation 1 (V1) 1721
4 Emergency operation with assembly plate(s) Variation 2 (V2) 1725
5 Emergency operation slewing gear(s) with assembly plate(s) Variation 2 (V2) 1735
6 Emergency operation of winch 4 (W IV) on the LR1600/2 and LR1600/2-W 1739
7 Ending emergency operation 1743
6.08 Radio remote control 1744
1 Radio transmitter 1745
LIEBHERR 21
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1.02 Product description 027290-04
1 Crawler travel gear
1.1 Frame
In-house manufactured, distortion-resistant welded structure made from high-strength, close-grained
structural steel.
The crawler carriers can be removed and can be installed / removed with the crane.
1.2 Tracks
Maintenance free, dirt protected crawler track with flat track pads.
Pad width: 1.5 m
Pad width: 2 m *
Track width: 8.8 m
1.3 Central ballast
45 t, consisting of two ballast plates each with 10.0 t and two ballast plates with each 12.5 t.
1.4 Drive
Hydraulic travel drives with planetary gears.
The crawler chains can be controlled independently and in the opposite direction.
There is no preferred travel direction.
1.5 Travel power
Stepless speed from 0 km/h to 1.75 km/h.
2 Crane superstructure
2.1 Frame
In-house manufactured, distortion-resistant welded structure made from high-strength, close-grained
structural steel.
Connection to crawler travel gear via 3-row roller rotary connection, slewable by 360°.
2.2 Diesel engine
– Number of cylinders: 8
– Make: LIEBHERR
– Water cooled
Note
Depending on one of the respective crane configurations, one of the following engine types is
installed on the crane, see also separate Diesel engine operating instructions!
2.2.1 Engine type D 9508 A7
Performance: 400 KW at 1800 rpm
Maximum torque: 2546 Nm at 1500 rpm
2.2.2 Engine type D 9508 A7 SCR
Performance: 450 KW at 1800 rpm
Maximum torque: 2671 Nm at 1500 rpm
1.02 LIEBHERR 41
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1.03 Technical data 027294-06
1.23 S-intermediate section 7.0 m, 2826.20
See illustration 21
Component Weight Width
S-intermediate section complete 6.9 t 3.00 m
S-intermediate section 5.6 t
S- and WA-bracket 2 guy rods 1.3 t
1.24 S-intermediate section 7.0 m, 2826.30
See illustration 22
Component Weight Width
S-intermediate section complete 7.5 t 3.00 m
S-intermediate section 6.2 t
S- and WA-bracket 2 guy rods 1.3 t
1.25 S-intermediate section 14.0 m, 2826.20
See illustration 23
Component Weight Width
S-intermediate section complete 12.5 t 3.00 m
S-intermediate section 10.0 t
S- and WA-bracket 2 guy rods 2.5 t
1.26 S-intermediate section 14.0 m, 2826.20 reinforced
See illustration 24
Note
Reinforced version for flying assembly!
Component Weight Width
S-intermediate section complete 12.8 t 3.00 m
S-intermediate section 10.3 t
S- and WA-bracket 2 guy rods 2.5 t
1.03 LIEBHERR 61
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2.03 Job planning 2.00 Safety
LIEBHERR 81
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2.04 General safety technical guidelines 027297-16
blank page!
2.04 LIEBHERR 101
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2.04 General safety technical guidelines 027297-16
15 Supporting
DANGER
The crane can topple over!
When actuating the supports with attached load and / or at loaded derrick ballast guying, the incline
and the force conditions of the entire boom system change!
There is no shut off by the LICCON overload system!
The crane can topple over!
Personnel can be severely injured or killed!
When a load is suspended, it is prohibited to actuate the support!
When the derrick ballast guying is loaded, it is prohibited to actuate the support!
It is absolutely essential that the crane be supported exactly in accordance with the load charts to
ensure safe crane operation.
The match of the sliding beams placement surfaces must be observed to ensure proper force transfer
between the sliding beams.
The crane may only be supported in these extension conditions.
WARNING
Danger of tipping over!
If only the load side sliding beams are extended, the crane can tip over when turning or setting down
the load!
Move all 4 sliding beams and support cylinders out according to the data in the load chart!
In intermediate positions between the support bases supporting is prohibited!
Pin the sliding beams to support base according to the load chart!
Fully insert and secure the pins!
WARNING
Risk of toppling the crane due to incorrect extension of the sliding beams!
The load suspended on the hook causes tension and deformation of the hoist rope and telescopic
boom. The same applies for operation with lattice jib and guy ropes. If the load is dropped from the
fastening ropes or if the fastening or hoist rope breaks in this situation, a sudden relief occurs. The
boom snaps back quickly. This can cause the crane to topple over.
Despite previous assumption, it might become necessary to swing the load to the opposite side. This
can cause the crane to topple over.
The telescopic boom or counterweight momentum may cause the crane to topple when slewing from
the longitudinal vehicle position.
Move all 4 sliding beams and support cylinders out according to the data in the load chart!
15.1 Aligning the crane
In addition to the proper foundation for the supports, the horizontal alignment of the crane is of utmost
importance for safe crane operation.
DANGER
The crane can topple over due to the incline position!
If the crane is positioned at an incline and if the boom is turned towards the slope, then the boom
radius is increased as a result!
It is possible that the slewing gear can no longer hold the crane superstructure and, in extreme cases,
the crane can topple over!
Personnel can be severely injured or killed!
Align the crane horizontally before starting crane operation!
If the horizontal alignment of the crane has to be readjusted:
Set the load down on the ground before readjusting the crane!
2.04 LIEBHERR 121
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2.04 General safety technical guidelines 027297-16
Place on hand on your head and hold the other arm on the side of the body.
After this signal all other hand signals apply only for the main winch.
Note
If two or more main winches are present, then the signaller can show the number of the crane by
pointing to it or signal with one finger.
22.4.2 Lift with auxiliary winch
Hold one forearm vertically with closed hand and touch the elbow of this arm with the other hand.
After this signal all other hand signals apply only for the auxiliary winch.
22.4.3 Lift the boom
Hold one arm horizontally with thumb directed upward.
22.4.4 Lower the boom
Hold one arm horizontally with thumb directed downward.
2.04 LIEBHERR 141
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2.04 General safety technical guidelines 027297-16
Sign Explanation
Objects, which are to be transported when accessing a ladder
should not be heavy and easy to handle.
Make sure that the linkages engage safely.
Tighten the base extension (4 Nm to 5 Nm ).
Adhere to a minimum overlap of the base extension of 120 mm .
Fold the safety bridge open.
The ladder must be hung on the vehicle.
2.05 Signs on the crane
2.04 LIEBHERR 161
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2.05 Signs on the crane 029259-01
CAUTION
Property damage through oil change!
If the oil specified in the operating instructions is not used during the oil change, it can lead to
damage!
See Crane operating instructions, chapter 7.07!
1.56 979561108 - Counterweight
WARNING
Counterweight can fall down!
If the auxiliary crane is removed on the counterweight before the counterweight is locked on both
sides with the turntable, then the counterweight will fall down and can fatally injure assembly
personnel!
Do not remove the auxiliary crane until the counterweight is locked and secured on both sides with
the turntable! See Crane operating instructions, chapter 4.07.
1.57 973974408 - Permissible transport weights of the components
1.58 973974608 - Permissible transport weights of the components
2.05 LIEBHERR 181
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2.06 Antifall guards on the crane 028653-03
5.2 Retaining ropes
5.2.1 Retaining ropes on the S- and D-pivot section
On the lattice sections, on the upper left and right hand side, are retaining ropes 1 assembled as fall
arrest equipment.
NOTICE
Danger of damage!
By hanging loads or other objects on the retaining ropes, they can be damaged and fail in case of an
emergency!
Never hang loads or objects on the retaining ropes 1!
WARNING
Risk of falling!
During assembly / disassembly, inspection and maintenance work, personnel must be secured with
appropriate aids to prevent them from falling!
If this is not observed, assembly personnel can fall and suffer life-threatening or fatal injuries!
Any work, where there is a danger of falling must be carried out with suitable aids (for example:
lifting platforms, scaffoldings, ladders, auxiliary crane)!
If the work cannot be carried out with such aids nor from the ground, then the assembly personnel
must secure themselves with the fall arrest system 4 to avoid falling, see Crane operating
instructions chapter 2.04!
The assembly personnel must hook themselves for all installation / removal work, maintenance
and inspection work on the lattice mast boom with approved fall arrest systems 4 on the retaining
ropes 1 on the left and right hand side with both snap hooks 2 and secure themselves to prevent
them from falling (For example: Fall arrester with self-actuating blocking function and an automatic
tension and pull in device for the connectors)!
The connector must be set to a length as short as possible so that is it impossible to hit the ground
in case of a fall!
Fall absorbers may not be used, because they stretch too much in case of a fall!
On the retaining ropes 1 on the left and right hand side, no more than maximum two
persons may hook themselves with the snap hooks 2 and secure themselves to prevent falls, see
sign 5!
Changing the snap hooks 2 over is only permissible on the connecting points from lattice section
to lattice section!
When changing the snap hook 2 from lattice section to lattice section, one snap hook 2 must
always be hooked on one retaining rope 1!
Never release both snap hooks 2 simultaneously from the retaining ropes 1!
Before any assembly / disassembly work, maintenance and inspection work it must be ensured
that all obstacles below the work place have been removed and that there is sufficient clearance in
case of a fall!
During all assembly / disassembly work, maintenance work and inspections, travel or crane
operation is prohibited!
2.06 LIEBHERR 201
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2.20 Wind influences for crane operation 028802-02
Note
The maximum permissible wind speed (vmax) and the maximum permissible wind speed according
to the load chart (vmax_TAB) always refers to the 3 second wind gust speed, which is present in the
maximum hoist height.
Instead of the 3 second wind gust speed, weather information services often report a wind speed,
which is averaged within a time period of 10 minutes (socalled 10 minute average). It refers to the
wind force on the Beaufort scale, normally to the medium value of the wind speed, which is
determined within a time from of 10 minutes at a height of 10 m above ground or above sea level.
The determining factor for the calculation of the 3 second wind gust speed in maximum height is
significantly higher than the medium value of the wind speed, which is determined over a time of
10 minutes at a height of 10 m above ground!
Crane operation is generally permissible up to the maximum wind speed (vmax_TAB) specified in the
respective load chart for the current boom length.
Prerequisite for that is:
– The wind exposure surface (AW) of the hoist load is not more than 1.2 m2/t
DANGER
Danger of tipping and overload of load carrying components!
The maximum permissible wind speed according to the load chart (vmax_TAB) may not be
exceeded, even if the wind exposure surfaces (AW) of the hoist load is smaller than 1.2 m2/t!
If the wind exposure surface (AW) of the hoist load is more than 1.2 m2/t, then the maximum
permissible wind speed (vmax) must be redetermined for the load case!
1.3.1 Determination of maximum permissible wind speed
The maximum permissible wind speed can be determined with the following methods:
1.) Calculation with formula
2.) Determination with wind force diagrams
1.3.2 Calculation of maximum permissible wind speed with formula
Formula for the calculation of the maximum permissible wind speed
The following data is required for the calculation:
– Maximum permissible wind speed according to load chart (vmax_TAB)
– Hoist load (mH)
– Projection surface of hoist load (AP)
– Wind resistance coefficient (cW)
Description of procedure:
1.) Calculation of wind exposure surface (AW = AP x cW)
2.) Check if the wind exposure surface AW exceeds the limit value of 1.2 m2/t
3.) Calculation of maximum permissible wind speed (vmax)
Example for the calculation of the maximum permissible wind speed
Data for calculation of load case:
vmax_TAB = 9.0 m/s
mH = 50.0 t
AP = 70.0 m2
cW = 1.4
2.20 LIEBHERR 221
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3.01 Crawler carrier assembly 028650-00
3.3 Installing the assembly supports
Attach the tackle on the four attachment brackets A.
Lift the crawler center section 3 with the auxiliary crane and set it onto the support 28.
The swinging out and locking procedure of the assembly support is the same for all four assembly
supports and is therefore described only once.
Release the transport retainer support beam: Remove the spring retainer 22 and unpin the pin 23,
point D.
WARNING
Swinging out assembly support!
If any personnel is within the swing range of the assembly support, they can be severely injured or
killed!
Make sure that no persons are within the swing range of the assembly support!
Swing the support beam 3 out.
Remove the brace 33 from the transport position P: Remove the spring retainer 39 on both sides
and unpin the pins 40.
Pin the strut 33 on the crawler center section 3 and on the support beam 37: Insert pins 34 on
points E and secure with spring retainers 35.
WARNING
Risk of accidents due to improper support!
If the support plates are not properly supported from below, they can sink into the ground and
severely injure personnel!
The supporting base must be able to safely take on the weight of the crawler center section, the
turntable and the crawler carrier!
The supporting base must be made large enough for the ground conditions, with solid materials,
such as wood, steel or concrete slabs, see Crane operating instructions, chapter 2.04!
Take the support plates 36 from the transport retainer B and place them on the supporting
bases 24.
Align the support plates 36 to the hydraulic cylinders 18.
3.01 LIEBHERR 241
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3.01 Crawler carrier assembly 028650-00
Note
For function assignment of hand levers to move the support cylinders in / out, see section “Lifting
the crawler center section”!
Note
For disassembly on supports, the SA-frame must be positioned vertically!
Make sure that the following prerequisites are met:
– The crane must be aligned horizontally.
– The placement location must be level and have adequate load-bearing capacity.
– Suitable material must be available for the supporting base of the assembly supports.
– The support plates are installed.
– The crane engine is running.
– The set up button D is pressed: The assembly icon 11 appears in the LICCON monitor.
– The key button “Crawler assembly” 115 is actuated: The indicator light “Crawler
assembly” 114 lights up.
3.01 LIEBHERR 261
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3.01 Crawler carrier assembly 028650-00
Make sure that the following prerequisites are met:
– The crane must be aligned horizontally.
– The placement location must be level and have adequate load-bearing capacity.
– The maximum height of the transport vehicle 4 may not exceed 1000 mm and a maximum width of
3000 mm, see illustration 44.
– Suitable material must be available for the supporting base of the assembly supports.
– The support plates are installed.
5.2.1 Removing the first crawler carrier
See illustration 45.
Make sure that the following prerequisites are met:
– The crane engine is running.
– The set up button D is pressed: The assembly icon 11 appears in the LICCON monitor.
– The key button “Crawler assembly” 115 is actuated: The indicator light “Crawler
assembly” 114 lights up.
Preparing the crawler carrier for disassembly
NOTICE
Damage to the crawler carrier!
If the track pads are not secured with the transport retainers to prevent them from sagging, the crawler
carrier can be severely damaged!
Secure the track pads 12 before assembly of the crawler carrier 9 with the chains 10 to prevent
them from sagging!
Hang the chains 10 with the bars 11 on the track pads 12, see illustration 44.
Note
The lugs 8 must be swung between the track pads 12, “upward”!
Swing the lugs 8 “up”.
Pin the fastening ropes 7 on the assembly device 31 and secure.
Luff the SA-frame 29 up until the assembly cylinder 30 is centered above the crawler carrier 9.
Move the assembly cylinder 30 out: Actuate master switch 2.
Pin the fastening ropes 7 on the lugs 8 and secure.
Make sure that the pins 15 are completely unpinned on both sides on the crawler carrier.
3.01 LIEBHERR 281
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3.02 Turntable assembly 025307-01
2.1 Lifting the turntable from the flatbed trailer
Make sure that the following prerequisite is met:
– The brackets 20 are pinned on the receptacle points for the pivot section, points P1.
Attach the tackle on the receptacle points, points P1 and points P2.
Bring the tackle to “tension”.
Release and remove the transport retainers on the turntable.
WARNING
Falling components!
When lifting the turntable from the flatbed trailer, components or the turntable can fall down!
Personnel can be severely injured or killed!
Make sure that there are no persons within the danger zone!
Lift the turntable with the auxiliary crane from the flatbed trailer.
3.02 LIEBHERR 301
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3.03 Central ballast 028130-00
4 Installing the central ballast
WARNING
Danger of slipping / falling during assembly / disassembly work!
During assembly and disassembly work, personnel must be secured with appropriate antifall guards
to prevent them from falling!
Weather influences, such as wetness, wind, snow, frost increase the slipping / falling danger!
Personnel can be severely injured or killed!
All assembly / disassembly work must be carried out using suitable aids (lifting platforms,
scaffolding, ladders, auxiliary crane, etc.)!
If work cannot be carried out on the ground or using such aids, then assembly personnel must be
secured with the personal fall arrest system (see Crane operating instructions, chapter 2.04) to
protect against falling!
Hang in the personal antifall system in the corresponding attachment points on the crane (see
Crane operating instructions, chapter 2.06)!
If railings are present on the components, then they must be brought into the corresponding
position and secured for assembly / disassembly work!
Step on aids and fall arresters only with clean shoes!
Keep aids and fall arresters clean and free from snow and ice!
WARNING
Falling components and central ballast plates!
At assembly / disassembly, the components and central ballast plates can fall down!
Personnel can be severely injured or killed!
Make sure that no persons or objects are within the danger zone!
WARNING
Incorrect handling of the attachment equipment!
If attachment equipment cannot be attached correctly and if it is not secured sufficiently to prevent it
from loosening up, loads can fall down! Personnel can be severely injured or killed!
Make sure that the attachment equipment is correctly attached on the attachment points and that it
is secured sufficiently to prevent it from loosening up!
WARNING
Danger of impact / crushing!
If anyone remains within the assembly / disassembly area of the ballast, they would be exposed to a
danger of impact / crushing!
Personnel can be severely injured or killed!
Make sure that there are no persons between the components which are to be assembled /
disassembled on the components and the crawler travel gear!
Note
The assembly procedure varies, depending in the equipment configuration!
The following three equipment configurations are possible and they differ in assembly steps:
– Crane operation on crawler carriers 5, see illustration 1
– Crane operation on crane support 6 installed on crawler carriers 5, see illustration 2
– Crane operation on crane support 6 installed on crawler center section 1, see illustration 3
3.03 LIEBHERR 321
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3.03 Central ballast 028130-00
Before the receptacle stud 16 is guided into the central ballast plates 2 Variation V1, it must be
ensured that the insertion length a of the receptacle stud 16 is set correctly.
The insertion length a of the receptacle stud 16 for central ballast plates 2 Variation V1 can be
adjusted by hand.
If the insertion length a of the receptacle stud 16 is to be adjusted:
Release and unpin the pins 16.1.
Adjust the insertion length a by moving the guide sleeve 16.2 to the desired insertion length a,
observe the stages in illustration 4.
Insert and secure the pin 16.1.
Result:
– The receptacle stud 16 is adjusted.
Note
The receptacle stud 16 in illustration 4 is set to 5 t!
Attach the receptacle stud 16 on the auxiliary crane and guide it into the central ballast plate(s) 2.
Pull up the lever 16.3 and fold it down.
Turn the receptacle stud 16 with the lever 16.3 by 60° until it points to the symbol “Locked” 2.1 of
the central ballast plate 2, see illustration 6.
Note
The receptacle stud 16 is locked by lifting the central ballast plate(s) 2.
Lift the central ballast plate(s) 2 with the receptacle stud 16 from the base plate 3 and place them
on a suitable storage location.
When the central ballast plate(s) 2 are placed down:
Turn the receptacle stud 16 with the lever 16.3 by 60° to the stop in direction of the symbol
“unlocked” 2.2, see illustration 7.
Result:
– The receptacle stud 16 is unlocked.
Carefully pull the receptacle stud 16 from the central ballast plate.
3.03 LIEBHERR 341
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3.05 Crane support 025204-01
1 Component overview Crane support
1 Support beams
2 Support cylinder
3 Support plates
4 Swing unit
4.1 Swing cylinder
4.2 Guide tube
4.3 Scale for support base
6 Pinning top
7 Pinning bottom
8 Eyehooks
9 Rigging eyehooks for