Shear-Leg
Floating Cranes are aimed at ship rescue, repair, maintenance and other
related operations in rivers and lakes. Mounted on marine pontoons conforming
to international marine standards, different calibers are available
world-wide to cope with target applications. So as to successfully accomplish
required missions, appropriate lifting, lowering and pulling capacities
have to be made realizable over a specified reachability domain. This
can be made possible through the use of different types of winches.
A
LAKE NASSER SHEAR-LEG FLOATING CRANE:
Our
first Shear-Leg Floating Crane is in current use in Lake Nasser; a huge
water reservoir that started formation in the 1960's upon the construction
of the Aswan High Dam across The River Nile in Upper Egypt. A Shear-Leg
is mounted on a 16-meter wide 36-meter long marine pontoon. Four different
types of winches are used to allow for motion and load requirements.
A target 150-ton lifting or lowering capacity is provided by a double-drum
main winch originally tested at 180 tons. Two capstan winches symmetrically
located about the pontoon axis provide the required pulling capacity.
An anchor winch is located opposite to the capstan winches to take care
of necessary fixation. Vertical crane motion is realized by raising
and lowering the above-shown A-Frame through a luffing winch. This allows
the crane to cover a span of 10 meters below water level and 15 meters
above it.
CO-WORK:
The
machinery required for this crane was solely designed by DMMAS
engineers. We partnered with The
Arab Contractors ; one of the leading construction companies
in the Middle East and Africa ; to manufacture the crane so as to satisfy
the requirements of the Aswan High Dam Authority. Design and manufacturing
took place during the year 2006 and the crane went into service in March
2007.
PROSPECTS:
Our
experience in floating cranes is getting deeper. Another similar crane
is in current use in The River Nile. As suppliers of shear-leg floating
cranes, we are ready to provide consultation and supply required ranges
of specifications. Reach out to get our free quote.
