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PIPE JACKING - EXCAVATOR SHIELDS0 pages
The Excavator Shield features hydraulic closeable
doors or shelves at the face of bore.
The EX 50 Excavator manipulates cobbles and
spoils before they fall to the conveyor for removal.
This photo illustrates the laser target.
This ring-beam and lagging tunnel shows the
underside of a conveyor as spoils are transported
to the dirt bucket.
PIPE JACKING - EXCAVATOR SHIEL
For 96-168 in. (2,438-4,267 mm) OD tunneling and pipe jacking
applications, Akkerman Excavator Shields are a proven partner.
Excavator Shields differ from the Tunnel Boring Machine (TBM)
in that they do not have a cutter head or rotating drum, and
excavate spoils with a backhoe-type excavator. The excavator
and control console easily transfer between different sized
shields. Excavator Shields are appropriate for traditional pipe
jacking, liner plate and ring-beam and lagging tunnel building.
The EX 50 Excavator, housed inside the shield, assists in the
removal of obstacles and spoils at the face of the bore between
the sand shelves. Operators control this fully steerable, laser-
guided machine with joysticks and foot controls. For loose
soil conditions, optional closeable hydraulic doors prevent
subsidence from entering the jacking can.
Like all Akkerman TBMs, the Excavator Shield is powered by
hydraulics and guided with a laser system. Excavator shields
perform with our 5000 Series Pump Units or a multiple cylinder
jacking system.
Power Pack is remote pendant-controlled by the operator in
the launch shaft.
Specifications
Product | Machine OD | Length | Weight |
BS840 | 100" (2.540 mm) | 18* | 36,000 lbs- (16,329 kg) |
BS960 | 114" (2.896 mm) | 18" | 40,000 lbs" (18,144 kg) |
BS 1080 | 127" (3.226 mm) | 18'" | 58,000 lbs" (26,308 kg) |
BS1200 | 144" (3.658 mm) | 18- | 65,000 lbs" (29,484 kg) |
BS1440 | 168" (4,267 mm) | 18" | 73,000 lbs" (33,112 kg) |
Product | Hydraulics | Max. Power | Extension | Retraction |
EX 50 | 60 gpm @> 2.800 psi (273 L/min@ 1,724 kPa) | 11.600 lbs. (5,261 kg) | 48,000 lbs (21,772 kg) | 24.000 lbs. (10,886 kg) |
Note: Akkerman standard sizes can be customized to suit project needs.
"Actual lengths and weights may vary based on specific configuration.
The Akkerman P600, electric power pack features three
interchangeable power modules that are ideal in any
configuration and easy to maintain. The electrical supply
is 480VAC 60 Hz (415VAC 50 Hz) and the hydraulic reservoir
capacity is 600 gal (2,271 L). The P600 houses one high-
pressure power unit for jacking force and two low-pressure
units to power controls in the Excavator Shield. The P600
The EX 50 Excavator is mounted to the top center
interior of the excavator shield, directly right of
the operator console.
The EX 50 Excavator extends beyond the shelves
to dig at cobbles and boulders.
The operator controls the excavator's movement
with joystick and foot controls.
"
