Archive | April, 2014

Tunnel Boring Machine Erectors

Thursday, April 24, 2014


Galbiati Group has recently built four 4.5 ton- segment erectors for TBM (Tunnel Boring Machine), rotating head, for the excavation of the Qingdao metro.

The segments erectors, built by Galbiati, are identical for both weight and size. They are made up of a fixed structure and a moving one, both made of electro-welded structural metalwork and machined on machine tools.

The fixed part consists of two longitudinal beams on which the sliding guides of wear-resistant material are mounted. The moving part consists of the translating/rotating ring and the pick-up system.

The erectors are equipped with a mechanical pick up unit in order to grasp segments. The mechanical pick up unit grasps and retains segments for the entire duration of the positioning operations with three independent movements:

  • Swinging = ± 5°
  • Pitch = ± 5°
  • Roll = ± 5°

Below photos of the erectors completely assembled at Galbiati workshops.

The erectors have also included a coupling plate equipped with bolt benching machine.

Erectors technical data:

  • Total beams length = 7,000 mm
  • Overall rotation = ± 200°
  • Translation movement speed = N/A
  • Rotational speed = max. 2 rpm
  • Maximum load  = 4,500 Kg
  • Weight = ~ 25 ton
  • Intrados diameter  = 5,400 mm
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Galbiati Group - Engineering & Machining

23848 Oggiono (Lc) Via Cà Bianca Pascolo, 26 Italy | Fax +39 341.2633300 |
P.Iva: 03301540963 | Capitale sociale: 500.000 euro | REA: MI-1665349
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