HELD OF INVENTION
The present invention relates to a method for dismantling and
reassembly of high capacity 'Crawler Cranes with Lattice Boom'. More

particularly the present invention relates to a method for dismantling
and reassembly of high capacity 'Crawler Cranes With Lattice Booms'
without the use of additional crane, including loading and unloading
from transport vehicles adaptable to handle wind electric generators
at Wind Farms being set up in remote areas and in other areas where
availability of cranes is scarce and costlier.
BACKGROUND OF THE INVENTTON
Wind turbines are used to convert wind energy into electrical energy.
Wind turbine consists of a generator, a gearbox, a bearing housing, a
hub and a plurality of blades places in a nacelle. Wind turbine blades
convert the wind energy into mechanical energy resulting in slow
rotation of rotors with high torque. The generator coupled to the
gearbox produces electrical power. For high capacity wind turbines,
the tower height is more than 40m and quite commonly above 50 m.
On top of the tower, the wind turbine nacelle is fixed. The nacelle
weighs about 14MT for 250KW. All high capacity wind turbine
nacelles weigh more than this and whenever the nacelle is to be
brought down for repair, a high capacity crane having boom length

sufficient to reach the nacelle and iift the naceiie safely is
required. Wind farms are generally located in remote places and
arrangement of crane to work in these areas is a costlier affair.
Crawler crane with Lattice Booms are relatively cheaper but require
an additional crane of sufficient capacity (about 50 Ton capacity
additional crane is required for 100 Ton crawler crane) to reassemble
and dismantle the cranes transported by vehicles. This increases the
total cost and more time is taken for arrangement of two cranes at a
time. Further there is loss of wind power generation as repair activity
is delayed if two cranes are to be arranged at a time. An innovative
solution to assemble and reassemble the 'Crawler Cranes with Lattice
Booms at wind farms without an additional crane brings down the
cost and reduces the total time taken for repair,
OBJECTS OF THE INVENTION
It is therefore, an abject of the present Invention to propose a
method for dismantling and reassembly of high capacity 'Crawler
Cranes With Lattice Booms' without the use of additional crane,
including loading and unloading from transport vehicles, adoptable to
handle wind electric generators at Wind Farms and other places,
which eliminates the disadvantages of the prior art.
Another objection of the present invention is to propose a method for
dismantling and reassembly of high capacity 'Crawler Cranes

With Lattice Booms' without the use of additional crane, including
loading and unloading from transport vehicles, adaptable to handle
wind electric generators at wind farms, which is economic, simple
and easy to maintain.
A further object of the present Invention is to propose a method for
dismantling and reassembly of high capacity 'Crawler Cranes With
Lattice Booms' without the use of additional crane, including loading
and unloading from transport vehicles, adaptable to handle wind
electric generators at wind farms, which minimizes the brake down
time of wind farm.
A still further object of the present invention is to propose a method
for dismantling and reassembly of high capacity 'Crawler Cranes With
Lattice Booms' without the use of additional crane, including loading
and unloading from transport vehicles, adaptable to handle wind
electric generators at wind farms, which can be utilized in remote
area.
As yet further object of the present Invention is to propose a method
for dismantling and reassembly of high capacity 'Crawler Cranes With
Lattice Booms' without the use of additional crane, including loading
and unloading from transport vehicles, adaptable to handle wind
electric generators at wind farms, which is easy to handle.

SUMMARY OF THE INVENTION
Accordingly, there Is provided a method for dismantling and
reassembly of high capacity 'Crawler Cranes With Lattice Booms'
without the use of additional crane, including loading and unloading
from transport vehicles adaptable to handle wind electric generators
at wind farms. The method of unloading or reloading of all major
crane parts requiring additional crane is same as described in Fig
1,2,3,4. A part of crawler crane received on a vehicle is shown In Fig.
1. Using jacks, the crane part is lifted up and inserting supports and
some cross members the crane part is physically separated from the
vehicle bed Fig 2 & 3. Once the crane part is physically separated
then the vehicle is moved away and the crane part is ready for
further assembly with other parts removed from vehicles in similar
way. Referring to Fig. 5, a boom, a crane car body, a Crawler-Left &
Crawler-Right, a counter weights and a Frame with ropes removed
from vehicles in similar way, are aligned using tripods and chain
pulley blocks to integrate with the main car body as shown in Fig 06
and the crane is now ready for use. Dismantling of the crane parts is
done in reverse sequence of assembly following the same method
and loaded on the vehicles for transport purpose.
According to the present invention by following the method detailed
here, dismantling and reassembly of high capacity 'Crawler Cranes
With Lattice Booms' without the use of additional crane.

Including loading and unloading from transport vehicles is economical, simple and easy to
execute.
BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWINGS
Figure 1: The transport carrier (11) with crane body part (02) sitting on vehicle bed (7).
Figure 2: The same configuration but now the crane body part (02) is lifted to set on
plurality of Jacks, (8).
Figure 3: In two part in side, in side view shows the same configuration but now support
beams (9) and also crane body part (02) is placed on sufficient support, after
removal of Jacks (08, with plurality of Jacks (10) whereas adjacent back-view
shows support Jacks (10) below support beams (09) over the vehicle bed (07)
on which crane body part (02) rest.
Figure 4: The transport carrier devoid of any load whereas the adjacent part shows the
position of crane body part (02) resting on support beam (09) which is placed
on plurality of Jacks (10).
Figure 5: Crawler Crane with lattice Boom-Assembled
Figure 6: Layout For Reassembly
DETAILED DESCRIPTION OF A PREFERRED EMBODIMENT OF THE PRESENT
INVENTION

Reassembly Of crawler Crane
The present invention Is described herein below with reference to
Figure 1,2,3,4,5 & 6. As shown in Figure - 5, the major parts of the
cranes are identified as crane boom -01, crane car body - 02,
crawler Assembly - 03 & 04 dead weights -05, frame with wire
ropes- 06. These parts are transported in vehicles (11) in
disassembled condition and arrival of a typical part is shown in Fig 1.
Referring to Fig 2 & 3, the crane part 02 is lifted up to insert two
support beams 09 in between crane part 02 and vehicle bed 07,
using plurality of jacks 08 as shown in Fig. 2. The jacks are then
removed and the crane part 02 rests now on support beams 09
which extend sufficiently beyond the vehicle bed (07). Remove jacks
08 and place sufficient supports with plurality of jacks 10,
below support beams 09 to lift and support the crane part 02, Using
arrangement 10, lift crane part 02 sufficiently such that crane part 02

does not rest on vehicle bed 07. Now the vehicle (11) is completely
freed from the vehicle bed (07) and the vehicle (11) is movediaway.
Now the crane part 02 rest on support beams 09 and arrangement
10. Employing this method unload all the parts of the crawler crane
as shown Fig. 6. The sequence of unloading is important as this
minimizes the reassembly cycle time and facilities quick and easy
reassembly of crawler crane parts. As shown in Figure - 5 & 6, the
major parts of the cranes are identified as crane boom - 01, crane
car body -02, crawler Assembly - 03 & 04, dead weights - 05, frame
with wire ropes - 06 are aligned in a straight line. Lower the crawler
Assembly - 03 & 04 to ground level so that they can be moved as
and when required. Referring to Fig. - 06, a chain pulley block is
fixed in between the dead weights 05 and crawler Assembly - 03 &
04. The crawler Assembly - 03 & 04 together pulled towards car
body 02 using chain pulley blocks. After the crawler Assembly - 03 &
4 and car body 02 are brought together and aligned they are
assembled. Now the crane is mobile as a unit without boom 01 (Fig.
5 & 06), frame with wire ropes 06 and deadweight 05. Using
portable 'A' Frame with chain pulley block or tripod with chain pulley
block these parts assembled on to the crane. As the crane is now
mobile, maneuverability is increased and assembly is now easy and
quick. Assemble all the booms' parts (Fig. 05 & 06, item 01) and
position them at suitable height for assembling with the Car
body (Fig. 05 & 06, item 02). Complete the assembly of booms and
dead weights and frame with wire ropes (Fig, 05 & 06, item 06), Now
the crane is ready for use.

DISASSEMBLY OF CRAWLER CRANE
Disassembly Is done In the reverse sequence of reassembly described
above. First position the crane such that ail the dismantled parts can
be lined up for loading on vehicles without any problem. Referring to
Fig. 5, Lower the boom 01 and position them with supports at height
suitable for handling by portable 'A' Frame with chain puiley bock or
tripod with chain pulley block for loading on vehicle. Remove all the
connecting fasteners and boom is now detached from crane and
physically stands on supports. Dismantle the sections of booms
further to accommodate on available vehicles. Using portable 'A'
Frame with chain pulley block or tripod with chain pulley block load
the boom parts on vehicle and transport them. Employing this same
method unloads the frame with wire ropes 06 and deadweights 05
and keep them on floor. Remove all connecting fasteners between
crane car body - 02, crawler Assembly - 03 & 04. Lift the crane car
body - 02 up using plurality of jacks and supports as shown in Fig.
03. Pull the crawler Assembly - 03 & 04 away from crane car body -
02 using, a chain pulley block fixed in between the dead weight 05
and crawler Assembly 03 & 04. The crawler Assembly - 03 & 04
should be physically away from crane car body - 02. Lift the
crawler Assembly - 03 & 04 up using plurality of jacks and supports
as shown in Fig. 03. Drive a transport vehicle carefully under the
support beams and lower the crawler Assembly - 03 & 04 on the bed
of the vehicle using jacks. Remove the support beams and the
crawler Assembly - 03 & 04 is now on the bed of the vehicle and

ready for transport. Crane car body 02 is already ilfted up. Drive a
transport vehicle carefully under the support beams of crane car
body 02 and using jacks lower the car body on the bed of the
vehicle. Remove the support beams and the crane car body 02 is
now ready for transport. Using portable 'A' Frame with chain pulley
block or tripod with chain pulley block, load the frame with wire
ropes 06 and deadweights 05 on a vehicle and they are ready for
transport. AH parts of the crawler crane are now ready for transport.

WE CLAIM
1. A method for dismantling and reassembling of crawler crane with lattice
Boom including its loading and unloading on/from an appropriate transport
vehicle, the said unloading and reassembling comprising the steps of;
a) engaging a plurality of Jacks (08) to lift up crane part (02) from the
vehicle bed (07) to insert two support beam (09) in between crane part
(02) and vehicle bed (07);
b) removing jacks (08) allowing crane part (02) to rest on supporting beams
(09) extending sufficiently beyond the vehicle bed (07) and engaging
plurality of jacks (10) below supporting beams (09) of lift and support the ^
crane part (02) so that crane part (02) does not rest on vehicle bed (07);
c) allowing the vehicle (11) to move out;
d) unloading in similar way a boom (01), a crawler assembly (03 and 04), a
deadweight (05), a frame with wire rod (6) from the vehicle (11) in a
sequential manner;
e) placing crane boom (1), crane car body (02), crawler assembly (03-04),
frame with wire rope (06), dead weight (05) in a straight line;
f) lowering the crawler assembly (03-04) to ground level to allow them to
move when required;
g) fixing a chain pulley block in between the dead weights (05) and crawler
assembly (03-04);
h) pulling the crawler Assembly (03 & 04) towards car body (02) by means
of a chain pulley block;

i) bringing together, aligning and then assembling crawler assembly (03-04)
and car body (02) making the crane mobile without boom (01), frame
with wire ropes (06) and deadweight (05); wherein
j) the boom (01), frame with wire ropes (06) and deadweight (05) are
assembled to the crane by means of a portable 'A' frame with chain pulley
block or tripod with chain pulley block when all the parts of the boom (01)
are assembled and is positioned at required height to be assembled with
car body (02).
2. The method as claimed in claim 1 wherein the method of dismantling of
crawler crane comprises:-
- placing the crane in such a position that all the dismantled parts can
be lined up for loading on vehicle;
- lowering the boom (01) and positioning them with supports at height
suitable for handling by portable 'A' frame with chain pulley block or
tripod with chain pulley block for loading on vehicle (11);
- removing all the connecting fasteners, and detaching the boom from
crane and physically stands on supports;
- dismantling the sections of booms (01) further to accommodate on
available vehicles (11);
- loading the boom parts (01) on vehicle by means of portable 'A' from
with chain pulley block;
- incorporating the same method to unload the frame with wire ropes
(06) and deadweights (05) and to keep them on floor;
- removing all connecting fasteners between crane car body (02) crawler
Assembly (03 & 04);

- lifting the crane car body by means of a plurality of jacks (10) and
support (09);
- taking out the crawler Assembly (03 & 04) away from crane car body
(02) by means of a chain pulley block fixed in between the dead
weight (05) and crawler Assembly (03 & 04);
- lifting up the crawler Assembly (03 & 04) by means of a plurality of
jacks (10) and supporting means (09).
- placing the transport vehicle (11) carefully under the support beams
(05) and lowering the crawler Assembly (03 & 04) on the bed of
vehicle (07) using jacks (10);
- removing the supporting beams leaving the crawler Assembly (03 &
04) on the bed of the vehicle (07); wherein
- a transport vehicle is carefully placed under the support beams of
crane car body (02) and the car body is lowered on the bed of the
vehicle, using jacks when
- the supporting beam (09) is removed and
- the frame with wire ropes (06) and deadweights (05) are loaded on
the vehicle (11) by using portable 'A' frame with chain pulley block or
tripod with chain pulley block making them ready to be transported.

ABSTARCT

A METHOD FOR DISMANTLING AND REASSEMBLING 'CRAWLER CRANE WITH
LATICE BOOM' INCLUDING ITS LOADING ANDUNLOADING ON/FROM AN
APPROPRIATE TRANSPORT VEHICLE.
The invention discloses a method for dismantling and reassembly of 'Crawler Cranes
with lattice Boom' including its loading and unloading on from an appropriate transport
vehicles, comprise steps of (a) unloading a boom (1), a crawler assembly (03 & 04), a
deadweight (05) a from with wire rod (06) from the vehicle (11); (b) egaging a plurality
of jacks (08) to lift up crane part (02) from the vehicle bed (07) for inserting two
support beam (09) in between crane part (02) and vehicle bed (07);(c)removing jacks
leaving crane part (02), to be rest on supporting beam (09) which extend sufficiently
beyond the vehicle bed (07);(d)placing sufficient support below the extended part of
the beam (09) by means of a plurality of jacks (10) show that crane part (02) does not
rest on vehicle bed (07), (e)allowing the vehicle (11) to move out;(e)placing crane
boom (01) crane car body (02), crawler Assembly-(03 04) and frame with wine rope
(06); dead weight (05) in a straight line;(f) fixing a chain pulley block in between the
dead weights (05) and crawler Assemble (03 & 04), (g) pulling the crawler Assemble
(03 & 04) towards car body (02) by means of a chain pulley block;(h) assembling the
crawler Assemble (03 & 04) and car body (02) by taking together and (i) mounting of
boom (01), frame with wire ropes (06) and dead weight (05) in right position by means
of a portable 'A' frame with chain pulley or tripod with chain pulley block.