Elliott Digger Derrick, Operation & Maintenance Manual, Page: 34 / 376

Nomenclature EEC-0169 V1.0
Nomenclature
Digger Derrick Nomenclature
To promote clear communication between the manufacturer, dealer, installer,
user and operator, the nomenclature presented in this section should be used by the
manufacturer, dealer, installer, and lessor in all publications concerning the digger
derrick, including:

Operator’s Manual

Service Manual

Installation Manual

Replacement Parts Manual

Sales Specifications

Advertising Specifications
A. Upper Controls: Those controls located in or near the optional platform.
B. Platform: The optional personnel-carrying component of a digger derrick, such
as a bucket, basket, stand or equivalent device including the attachment means
to the boom.
C. Platform Pin: The horizontal pin that attaches the platform to the digger derrick
boom, and about which the platform rotates with respect to the boom.
D. Upper Boom Tip: The end of the boom farthest from the turntable.
E. Extension Cylinder: The hydraulic cylinder(s) that extend and retract the
booms.
F. Boom Pin: The horizontal shaft about which the boom pivots as it is raised or
lowered relative to the turntable.
G. Lower Boom: The structural member attached to the turntable that supports the
extensible boom(s).
H. Intermediate boom(s): Structural member(s) that extend and are located
between the lower and upper booms.
I. Upper Boom: The structural member that extends the farthest and supports the
boom tip or optional platform(s), or both.
J. Winch Line: The load hoisting rope or cable.