The
K-10000 tower crane has a different counterweight arrangement than what is
typically encountered on tower cranes.
There are two kinds of Counterweight:
Fixed - straddling the CW Jib
at its outer end
Mobile - hanging in two CW Trolleys
The
CW Trolleys are individually powered to travel between their minimum radii
and their maximum radii.
The
CW Travel is semi-automatic.
It s under Operator control, but only possible when the Load Condition
either allows it or requires it.
CW Travel is only allowed when all other tower crane motions are at
standstill.
CW Trolleys are Parked, either at their minimum radius or at their maximum
radius, while the crane is working.
The
smaller cluster is the the Small CW Trolley parked at its max. radius,
under the Fixed CW. The large cluster is the Large CW Trolley parked
at its min. Radius.
Installation
of all Counterweight Blocks is done with mobile crane
as part of the erection of the tower crane.