This section provides the meaning of some important
terms used in this manual.
Load Radius, Lifting Height
"Load radius" refers to the horizontal distance between
the crane's center of rotation and the vertical center of
the lifted load.
A "lifting height" is defined for each load radius and
refers to the vertical distance between the ground and
the bottom of the hook block raised to its uppermost po-
sition.
Maximum Lifting Height
"Maximum lifting height" refers to the maximum lifting
height allowed.
Boom Length, Boom Angle
"Boom length" refers to the distance from the pivot pin at
the foot of the boom to the center axis of the sheave (s)
at the boom head.
"Boom angle" refers to the angle formed by the boom's
centerline and the horizontal.
Jib Length, Jib Offset Angle
"Jib length" refers to the center-to-center distance as il-
lustrated in the figure below.
"Jib offset angle" refers to the angle formed by the cen-
terline of an extended jib and the centerline of the boom.
Rated Lifting Capacity
"Rated Lifting capacity" refers to the maximum allowable
load for a particular boom length and load radius. The
mass of load handling devices such as hook blocks and
slings, shall be considered part of the load and must be
deducted from rated lifting capacities.
The mass of individual hook blocks are indicated in the
"INFORMATION AND DATA" section at the end of this
manual.
Without Load
"Without load" is used to indicate that no load is being
lifted on the hook block.
Terminology
T038270E
9
Terminology
Terminology
Lifting height
Load radius
Center of rotation
T102540E
Boom angle
T24419E
Boom length
Jib offset angle
T20019E
Jib length
T21566E
Rated lifting capacity
Mass of hook block
Lifting capacity
Содержание GT-550E-2
Страница 20: ...A 19 Safety Rules Safety Rules...
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Страница 32: ...A 31 Warning Labels Warning Labels 1 2 3 JIB PIN STATUS...
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