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5
Information about the prototype
Maintenance and expansion of a rail network are essential
for smooth railroad operations. Replacing turnouts, cutting
back overgrown trees, or rerailing cars are among the work
required for smooth operation. After accidents locomotives
and cars must be salvaged, rubble has to be removed, and
rescue work has to be done quickly and efficiently often
under enormous time constraints. The railroad therefore
needs cranes that have been adapted especially to its
requirements.
Between 1975 and 1977, the German Federal Railroad (DB)
took delivery of three type 100 eight-axle diesel hydraulic
railroad rotary cranes from Krupp Crane Construction, Inc.
(formerly Krupp-Ardelt) in Wilhelmshaven. These units have
150 metric tons lifting power, and they attracted a great
deal of attention in industry circles due to their design and
drive system technical development. These crane cars were
the most powerful on the DB at the time. They had long
booms that were set up with cables and they were designed
especially for cleanup work at serious accidents as well as
for assembling bridge parts and for loading extremely heavy
loads. An appropriately large support base (7.1 meters /
23 feet 4 inches) hat to be created here by mounting both
counterweights and by swinging the support arms out at
right angles. Then about 45 metric tons could be raised at
the main hoist with maximum extension of the crane boom
at 16.4 meters / 53 feet 10 inches and even 150 metric tons
with a minimum extension of 8.0 meters / 26 feet 3 inches.
The crane car rests on two four-axle trucks
(4.5 meter / 14 feet 9 inches wheelbase) with roller bearing
mounted 30 metric ton wheel sets. The inner wheel sets for
each truck have a wheel set gearbox for self-propulsion,
which is done with hydraulic axial piston motors. An air-
cooled eight-cylinder Deutz diesel motor with 122 kilowatts
/ 163 horsepower continuous output at 1,800 rpm powers
the drive system. This 160 metric ton heavy crane car has
a maximum speed of 100 km/h / 63 mph and can operate on
curves with a minimum radius of 120 meters / 40 feet. The
crane boom rests on an approximately 20 meter / 66 foot
long type 817 crane tender car when the crane is being
transported somewhere to be used. The crane tender car
runs on two trucks, each with two wheel sets, and it is also
designed for 100 km/h / 63 mph.