73
march 2015
international
construction
CRANES
Lifting innovation
CC 8800-1 lifts 267 tonnes at 30metres radius, while with the
BoomBooster this capacity is almost doubled, to465 tonnes.”
Luffing launches
Another trend in the crane sector is the increasing popularity
of luffing jib tower cranes. Although more expensive than
traditional horizontal fixed jib cranes, they have the advantage
that they are more compact, which can be critical on inner-
city sites. Another key feature stemming from the fact that the
lifting radius is changed by altering the boom angle on luffing
jib cranes is that they canworkwithout over-sailing outside the
site perimeter.This can be an important liability point, and is a
requirement on some projects.
There have been a rush of new launches in this area over the
last six months, particularly at the higher end of the capacity
spectrum.
Last March’s ConExpo exhibition saw the launch of the first
in a new range of luffing jib tower cranes fromManitowoc’s
Potain brand, in the shape of the MR 418, which offers
24 tonnes of capacity and amaximum jib
length of 60m
Further up the capacity spectrum,Terex
has launched the1,600 tonne-metreCTL
1600, which offers 66 tonnes of lifting
capacity, translating to 16 tonnes at the
tip of the 75mmaximum length jib.
Terex said applications for the new
model include high rise construction,
infrastructure andnuclear projects.
The new 66 tonner extends the range
upwards from the company’s previous
largest luffer, which had a capacity of 45
tonnes. “We made this jump because of
the new trends need different capacity,”
Riccardo Alba, Terex engineering
director, explained. “Time is money and
we try to offer the best solution for our
customers.”
In a similar class, oneof Liebherr’s latest
additions to its luffing jib tower crane
range is the 710 HC-L 32/64 Litronic,
which has amaximum capacity of 64 tonnes, and can lift up to
7.2 tonnes at amaximum radius of 65m.
And the trend towards higher capacity tower craneswas also in
evidence at lastNovember’s BaumaChina exhibition.
For example, Yongmao launched a 100
tonne flat top tower crane and 64 tonne
capacity luffing jib model at the show.
The range-toppingSTT2200flat tophas
amaximum 70m jib at the end of which
the capacity is 27.2 tonnes. Meanwhile,
the luffing jib STL 1460C also has a
maximum 70 m jib and the capacity at
the end of it is 6.3 tonnes.
Other new launches at Bauma China
included an unusual new take on an all-
terraincrane fromXCMG.TheXCWT30
features a normal wheeled chassis, along
with a set of crawler tracks.The company
said it takes 20minutes to switchbetween
the wheel and track drives, which allows
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Perfect solution
Sennebogen telecrawler used for difficult coastal project
G
erman contractor TweWe-Bau is using a Sennebogen 673 telescopic crane crawler
for the construction of a new slipway at theNorthSea spa town of Neuharlingersiel.
Themain task is seeing the crane position 21m long sheet piles prior to them being
vibrated into the ground.
Being a coastal project, it is a challenging site. The crane is required to not only hoist
the piles into place, but also drive out to sea to place them. Thismeans driving on uneven,
underwater terrain, for which the 673’swide gauge undercarriage is essential.
The combination of requirements pointed to a telescopic crawler crane. It would have
to pick& carry like a normal crawler crane, but the functions of an all-terrain crane-style
telescopic boomwere also important.
It is the versatility of telescopic boom crawler craneswhich has seen their prevalence and
popularity rise in recent years. Sennebogen is one of the preeminent players in the field,
and at the start of the year it agreed a deal withManitowocwhichwill see itmanufacture
telecrawler cranes for sales under theManitowoc brand in the Americas.
The CTL 1600 is a new high capacity luffing tower crane from
Terex. Potain, Liebherr and Yongmao have also added big
luffers to their ranges over the last year.
Yongmao is one of a number of
manufacturers to launch a high
capacity luffing jib crane in the last
year. The STL 1460 C can lift 6.3 tonnes
at the tip of a 70m jib.
