Nomenclature EEC-0169 V1.0
Nomenclature
K. Boom Tip Winch: A winch located at the tip of an intermediate or upper boom.
L. Boom Tip Sheave: The sheave(s) located at the boom tip that carries the winch
line.
M. Pole Guide: A mechanism located at the intermediate or upper boom tip used for
guiding and stabilizing a pole.
N. Pole Guide Tilt Cylinder: The hydraulic cylinder that controls the attitude of the
pole guide.
O. Digger Hanger Bracket: The structural member on the boom that supports the
digger.
P. Digger: The mechanism that drives the auger or screw anchor-setting device.
Q. Auger: The hole-boring tool attachment on the digger.
R. Auger Stowage Bracket: The mechanism that stores the digger and auger
assembly when it is not in use.
S. Lower Boom Winch: A winch located at the base end of the lower boom.
T. Lower Controls: The controls, either remote, on the vehicle, on the turntable or
on the pedestal, which are designed to operate the functions of the digger
derrick.
U. Pedestal: The stationary base that affixes the rotation bearing of the digger
derrick to the vehicle.
V. Rotation Bearing: the rotating member of the digger derrick between the
pedestal and the turntable that allows slewing of the booms.
W. Rotation (Slewing) Mechanism: The mechanism of a digger derrick that
controls rotation of the booms and turntable about the centerline of rotation.
X. Turntable: The structure above the rotation bearing that supports all the booms.
Y. Turntable Winch: A winch located on the turntable.
Z. Lift Cylinder: The hydraulic cylinder that lifts or articulates the boom.
AA. Outriggers: The structural members that are extended or deployed to
assist in stabilizing the mobile unit.
BB. Outrigger Cylinder: The hydraulic cylinder that extends or deploys the
outrigger.
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