Lukas DUO Traversing System - Manual (Page 9)

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Functions and performance 4.
4.1 Description
4.1.1 Rerailing bridge
The rerailing bridge is placed across the rails and acts as the base and traverse support for
the LUKAS roller carriages and the LUKAS traverse jacks.
If one bridge is not long enough, a second bridge can be bolted on by means of connecting
elements.
The anchor pin or the integrated anchor jack of the traverse jack can be fixed in the openings
at the top of the rerailing bridge. The rerailing bridges are transported by means of the pull-out
carrier handles mounted on the sides.
4.1.2 Roller carriages
The LUKAS roller carriages are designed for carrying heavy loads. The special rollers on the
underside of the roller carriage make it possible to move the carriage by hand or with the aid
of traverse jacks. The roller carriages are specifically designed to match the LUKAS rerailing
bridges, thus ensuring optimum traversing of the load.
The upper sliding plate is simply placed on the roller carriage yet it can be rotated and shifted
laterally with respect to rolling direction in order to minimise the danger of a jack placed on
the plate tilting or the supported load tipping the roller carriage during operation.
4.1.3 Traverse jack
LUKAS traverse jacks are designed for the purpose of traversing the LUKAS roller carriages
on the rerailing bridges. The traverse jack is a double-acting hydraulic cylinder. The end of
the piston rod is attached to the mounting points provided in the roller carriage. This makes it
possible to move the roller carriage in the retract and extend direction of the traverse jack.
Two versions of the traverse jacks are available. The one version has a fixed pin for locking
the traverse jack in the fixing points of the LUKAS rerailing bridge while instead the other
version features an integrated single-acting anchor jack that performs the same function as
well as lateral guide plates.
The advantage of the version with the anchor jack is that the jack can be hydraulically adjusted
without the user having to enter the danger zone. The prerequisite for this function is that the
rerailing bridge is aligned approximately horizontal and the load is raised such that there is no
danger of the roller carriage rolling away to the side. Nevertheless, it is still essential to firmly
secure the load.
The anchor jack is always extended when in no-load position to ensure anchorage in the
rerailing bridge is always retained even in the event of pressure loss in the hydraulic system.
The anchor jack is retracted when pressure is applied, thus making it possible to shift the
traverse jack.
4.1.4 Distance bars
The distance bars are used when a load is raised at two or more points and is then to be
shifted in one direction by means of roller carriages. They are always used in pairs to connect
the roller carriages. Most distance bars feature a rough adjustment and fine adjustment
facility to allow them to be adjusted precisely to the distance between the lifting points.
Versions are also available that cannot be adjusted.
The bars are attached to the securing points in the roller carriages.