Since more than three decades GTA- Machine Systems on the „Upper Level“ are successfully operating in Tunneling. The TAM 7500A is suspended at two „I 140 E“ overhead monorail tracks at the tubbing rings (rail gauge about 3m) and is moved by a GTA monorail walking mechanism at these rails. An additional rail track is suspended at the side and is used as travel rail for the transport unit. This rail track has a special suspension with a curved rail, allowing the transport system to take the support segments in the center of the tunnel. The TAM 7500A has two booms. These booms are separately mounted in two guideways, where they can be moved backwards and forwards. To be able to bear the manipulator and handle the segments in all possible positions, one of the booms is designed as a heavier version. Two roof plates which are placed in the front of the machine are able to cover a total of 120° of the roof to protect workers and other staff efficiently against possible rock falls in the unsupported area of the road. Innovation in Tunnelling Roadway support machine TAM 7500A
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Innovation in Tunnelling Roadway support machine TAM 7500A
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Since more than three decades GTA-
Machine Systems on the „Upper Level“
are successfully operating in Tunneling.
The TAM 7500A is suspended at two
„I 140 E“ overhead monorail tracks at
the tubbing rings (rail gauge about 3m)
and is moved by a GTA monorail
walking mechanism at these rails. An
additional rail track is suspended at the
side and is used as travel rail for the
transport unit. This rail track has a
special suspension with a curved rail,
allowing the transport system to take
the support segments in the center of
the tunnel. The TAM 7500A has two
booms. These booms are separately
mounted in two guideways, where they
can be moved backwards and forwards.
To be able to bear the manipulator and
handle the segments in all possible
positions, one of the booms is designed
as a heavier version. Two roof plates
which are placed in the front of the
machine are able to cover a total of
120° of the roof to protect workers and
other staff efficiently against possible
rock falls in the unsupported area of the
road.
Innovation in Tunnelling
Roadway support machine
TAM 7500A
Roadway support machine
TAM 7500A
• Working platform on the upper level (two independently operating
working baskets),
• Manipulator for moving and setting the tunnel segments,
• Supporting system against rock fall in the unsupported area and
• Backfilling system to inject concrete on the tubbing.