3
Description of the
Ruthmann-Steiger
BA.GB.12-27409-05-07-FTA-jr
RUTHMANN-Steiger
®
TB270
3-3
en by a hydraulic motor to be regulated in infinitely variable stag-
es.
Boom system (lifting boom)
The boom system consists of telescopic steel booms. The boom
elements are guided over plastic gliders. The boom system is ex-
tended and retracted respectively synchronously by an exterior
hydraulic cylinder and corresponding towing ropes and/or towing
chains.
The lines necessary for the power track are guided inside the boom sys-
tem. A cable / hose drum is situated inside of the turret. This drum is
equipped with a spring drive (flat coil) enabling the rolling up or off resp. of
the supply lines depending of the angle of elevation of the boom and the
telescopic extension of the boom system. There are flaps at the boom sys-
tem for maintenance jobs. Levelling of the working cage is achieved during
lifting or lowering movements of the boom by means of a hydrostatic cage
levelling system.
3.1.1.4
Working cage
The standard working cage consists of a aluminium tube sheet construc-
tion with a front access with self-closing door. Support rings for safety belts
are installed at the working cage. On the right on top of the working cage a
switch box is installed with the operating panel for the operational move-
ments. You can easily enter the working cage from the basic position by
means of the steps mounted at Steiger-substructure.
3.1.1.4.1
Socket 230 Volts
A 2-pole socket for 230 Volts is provided in the working cage, which is fed
from below at Steiger-substructure over a 3-pole CEE-coupling with differ-
ential-current switch (FI-protection).
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