Maeda D3001, Руководство по эксплуатации

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Section 4 – OUTRIGGER SETTING Mini-Crawler Crane M A E D A
4-36 3/2019 MC305C-3
OUTRIGGER SETTING
57B56B
Outrigger Setting Precautions
Selecting Location to Set Outriggers
• When setting the outriggers on the structural
objects such as construction site or concrete
floor, verify in advance that the surface where
the outriggers will be set has sufficient strength.
Insufficient strength in the setting surface will
result in overturning or fall of machine due to
collapse of the setting surface.
• Setting the outriggers on the soft ground as
given below will cause the tray of the outriggers
to sink in the ground, leading to the overturning
of the machine.
• Road surface with low-cost pavement
(low-cost asphalt or thin concrete)
• Surface with paving stones.
• Area reclaimed after excavation work
• Landfill
• Road shoulders or area close to hole such as
excavation work
• Deteriorated pavement surface
• Areas where under the pavement surface is
hollow due to water erosion and the top soil
appears to be hard but soft in the ground.
Protecting Ground
• Place a sole plate of sufficient size with sufficient
strength under the tray of all the outriggers on
the soft ground to protect the ground.
• If you have to set the outriggers near the road
shoulder by necessity, take secure action to
prevent the collapse of the road shoulder.
• When working on the slope, level the tray of all
the outriggers and the ground under the rubber
tracks before setting the outriggers.
Setting the outriggers with the tilted ground
surface without levelling the ground surface will
cause the outriggers to slip or overturn, causing
serious accidents.
• If the ground is not protected or if the outriggers
may sink even after protecting the ground, do
not perform the crane operations.
Fig. 4-79
Fig. 4-80
Fig. 4-81
Fig. 4-82
Fig. 4-83
Use of stable sole plate
Surface with low-cost pavement
Surface with paving stones
Landfill, etc.
Levelling ground of slope