Maeda MC285CB-3 - Working Areas Based on Outrigger Posture

M A E D A Mini-Crawler Crane Section 4 – OUTRIGGER SETTING MODES
9/2020 MC285CB-3 4-51
Working Areas Based On
Outrigger Posture
The following three outrigger posture defined:
MAX:
Rotary base at STANDARD ANGLE position,
both the outer box and upper box are pinned
at MAX extension position.
OTHER THAN MAX:
Rotary base at STANDARD ANGLE position,
the upper box and or the inner box are not at
MAX extension position.
MULTI ANGLE:
Rotary base NOT at STANDARD ANGLE,
regardless of position of inner box and upper
box pinning position.
Outrigger Posture Setting Rules:
1. All 4 outriggers must be deployed/set.
Leaving any outrigger in stowed position is
not allowed.
2. At least 2 neighboring outriggers rotary base
must always be at STANDARD ANGLE. 1
STANDARD ANGLE outrigger is not
allowed.
3. When MULTI ANGLE is used, at least 2
neighboring STANDARD ANGLE outriggers
must be set at MAX extension.
4. When MULTI ANGLE is used. Slewing
radius restrictions always apply for crane
lifting operation. There is not unlimited 360°
slewing.
5. Within the allowed slewing radius, Rated
Total Load Capacities (RTL) are either
“MAX” or “OTHER THAN MAX” based on
the corresponding outriggers posture,
extension position.
2 Outrigger States:
STANDARD STATE: 2 POSSIBLE
OUTRIGGER COMBINATIONS
1. ALL 4 OUTRIGGERS at “max” posture,
identical.
2. ALL 4 OUTRIGGERS at “other than max”
posture, identical.
MULTI STATE: 26 POSSIBLE OUTRIGGER
COMBINATIONS
1. 10 COMBINATIONS have no outriggers in
multi-angle posture. includes multiple
combinations of outriggers set at “max” or
“other than max” posture. 360° slewing
radius allowed.
2. 16 COMBINATIONS have 1 or 2 outriggers
in multi-angle posture. includes multiple
combinations of outriggers set at “max” or
“other than max” posture. slewing radius
restrictions apply, no 360° slewing.
Boom Deploy & Stowage In The
Restricted Slewing Area:
The boom stowed position, maybe in the portion
of the restricted slewing area, when Multi Angle
posture is used.
The boom will slewing, raise/lower in the
restricted area when:
1. Boom length is fully retracted.
2. Boom angle of least 50°.
3. There is NO lifted load other than
block/ball/searcher hook.
4. The boom will lower below 50° boom angle
within the 340°-20° portion of the slewing
radius.
Fig. 4-129