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TUnIS Navigation Gripper

TUnIS Navigation Gripper is a navigation system for gripper TBMs based on a total station and a laser-target unit mounted inside the TBM shield.

Reason why

The purpose of TUnIS Navigation Gripper is the precise determination of the current position of gripper TBMs to enable a smooth advance along the planned tunnel axis at any time.

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A safe, long-lasting tunnel structure requires maximum precision in tunnelling. Deviations from the planned route cost time and money. This is why Gripper TBMs need a reliable and approved navigation system.

TUnIS Navigation Gripper permanently determines and calculates all necessary data and information for navigating the TBM along the tunnel axis. A visible laser beam (class 3R) between the total station and the target plate is used for the calculation.

The external 2-axis inclinometer is specially designed for the harsh operating conditions (strong vibrations in the shield during advance) of the Gripper TBM.

Benefits

  • Continuous position determination
    The extension of the main system with the assistance system TUnIS.track assistant ensures continuous position determination and complete documentation – even during steering movements while tunnelling.
  • Minimising steering movements
    The TUnIS Navigation Gripper‘s angle of attack supports the TBM driver in aligning the machine: steering movements are minimised and the advance can be driven more precisely along the target route.
  • Avoid driving off-track
    Thanks to the navigation equipment, which is designed to withstand strong vibrations, precise TBM position determination is ensured at all times and driving off -track is avoided.
  • Avoid downtimes
    In case of fall out of the laser target, the prism system can still be used to determine a continuous, precise TBM position. Due to this redundancy, downtimes can be avoided.
  • Mobile operation
    With the TUnIS.mobile app, the total station can be modified twice as fast, reducing potentially dangerous climbing operations to a minimum at the same time.

Downloads

Our product info gives an overview of the features and benefits of TUnIS Navigation Gripper.

Contact

For more information or project inquiries do not hesitate to contact our expert.