Liebherr LB 16 - Manual (Page 16)

Drehbohrgeräte_S16-23.indd 16 22.03.2010 16:06:48 Uhr
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Flexible drilling applications
For drilling applications, a robust and torsion resistant leader is most important. For the various drilling tasks powerful
single or double rotary drives, Kelly bars, mixing drives as well as a wide range of accessories are available.
Flexibility through main winch
All winches of the Liebherr rotary drilling rigs are mounted on the leader. Thus, the leader can be adjusted without
causing any rope movement. The powerful Kelly winch provides high efficiency during Kelly drilling applications and
so offers decisive advantages especially when installing large diameter drilled piles. In case of heavy extraction work,
e.g. during double rotary drilling, this winch is used in combination with the rope crowd system.
Powerful drive leads to high daily production
As several drives have to be fed with power simultaneously for drilling, the higher engine power directly influences
productivity. The rig even offers enough power for further equipment such as casing oscillators.
More pull-down force for more displacement
The rope crowd system enables high pull-down force making the rotary drilling rig especially suitable for the instal-
lation of displacement piles.
Rigid leader design for utmost precision
Kelly drilling requires high directional precision of the casings. This requirement is ideally fulfilled by the leader which
is built in an extraordinarily rigid box design.
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