Bulletin 2/2010 - Siempelkamp NIS

SIEMPELKAMP | NUCLEAR TECHNOLOGY
The port-terminal company J. Müller on the Weser River, Germany Production hall at Siempelkamp Krantechnik in Moormerland, Germany
The location for the new crane system will be at J. Müller AG
in the port of Brake on the Weser River. The port-terminal
company owns one of the largest silo complexes in Europe.
360,000 t (396,832 US tons) of storage capacity is used for the
handling, storage, and processing of grain, feed, and oilseeds
among others. The modern transport organization offers the
release of orders 24 hours a day, seven days a week in an
effi cient and customer-specifi c manner.
The company ordered an innovative Siempelkamp crane concept
for its latest storage depot. Its area consists of four storage compartments
with a total capacity of 40,000 t (44,092 US tons). The
innovative automated crane will be used for distributing the
goods into the four compartments. This technology is used for
the fi rst time for the storage of grain and animal feed!
The concept: On the one hand the storehouse is connected with
one silo installation via a conveyor belt bridge. On the other hand
sensitive products can be discharged gently via a crane and a
conveyor belt from ships into the storehouse. The advantage of
this innovation: Grain, feed as well as sensitive products such as
wood pellets can be handled individually and appropriately.
Superior solutions for ambitious challenges
The crane system that was custom-built for this application is
supplied by Siempelkamp Krantechnik. The crane is designed as
a double-girder suspension crane with grab operation for the
handling of different dry bulk materials in and out of storage as
well as reloading processes.
The double-girder suspension crane moves on a 125 m (410 ft)
long welded custom crane track which has also been supplied
by Siempelkamp. These tracks have been installed at a height of
11 m above the fl oor of the wooden roof construction hall. The
bridge crane with a span of 26 m (85 ft) and cantilever arms of
7 m (23 ft), resulting in a total girder length of 40 m (131 ft),
stretches over the entire width of the building. The bridge crane
is equipped with a double-rail trolley including an open winch
hoist. To optimize the mounting dimensions, the trolley between
both bridge girders has a lowered design.
All movements of the crane are controlled by frequency converters.
The crane as well as the simultaneously movable doublerail
trolley can reach speeds of up to 63 m/min. Combined with
a maximum lifting speed of 38 m/min, 400 m³/hour of cargo can
be handled by the crane.
A motor-driven dual scoop grab serves as the load suspension
device. The grab has a dead weight of 7 t and a volume of 12 m³.
The load capacity of the grab is 9 t, the supporting structure of
the crane has been designed for a total load capacity of 16 t.
The crane controls are located outside the building inside a control
container. In manual mode the crane installation is operated
via a remote control. In automatic mode a programmable logic
controller with a connection to the control room is used. The
power supply to the crane and trolley is handled via energy
chains.
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