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.

Technical Data

Machine

Length : 16000 mm

Width : 3200 mm

Heigth (without transport unit) : 800 mm

Weigth : 28000 kg

Speed : 6-8 m/min

Advantages:

Boom 1 with manipulator:

Payload (manipulator) : 1600 kg

Telescopic stroke (manipulator) : 450 mm

Angle of rotation (manipulator) : 360°

Angle of rotation (clamp) : 180°

Telescopic stroke (boom) : 1200 mm

Payload (basket incl. 2 person) : 500 kg

Longitudial movement (carriage) : 4000 mm

Boom 2 with basket:

Payload (basket incl. 2 person) : 500 kg

Telescopic stroke (boom) : 1500 mm

Longitudial movement (carriage) : 4000 mm

Electrics

Supply voltage : 400 V (AC)

Frequency : 50 Hz

Control voltage : 24 V (DC)

Frequency (remote control) : 434 MHz

Electrical consumtion:

LS-variable capacity pump : 55 kW

Cooling unit : 2,2 kW

Transport unit : 15 kW

Backfilling-pumps : 16 kW

Headlights : 4 kW

various : 12 kW

Summary : 104,2 kW

Hydraulics

Capacity of tank : 400 l

Output : 230 l/m

Operatin pressure : 230 bar

GTA 10/2014