Tunnel Boring Machines

Segment Erector for TBM (Tunnel Boring Machine)

Tuesday, June 27, 2017

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We have recently realized one 4.5 ton- segment erector for a TBM (Tunnel Boring Machine), rotating head, for an important excavation project of the Mumbai metro line 3, India.

The segment erector is 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.

Segment Erector for TBM (Tunnel Boring Machine)

Segment Erector for TBM (Tunnel Boring Machine)

The erector is 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°

Segment Erector for TBM (Tunnel Boring Machine)

Erector technical data:

  • Total beams length = 5,900 mm
  • Overall rotation = ± 220°
  • Translation movement speed = N/A
  • Rotational speed = max. 2 rpm
  • Maximum load  = 4,500 Kg
  • Weight = 27,000 kg
  • Intrados diameter  = 5,400 mm

Segment Erector for Tunnel Boring Machine

Thursday, February 16, 2017

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Galbiati Group recently realized one 4 ton- segment erector for a TBM (Tunnel Boring Machine) designed for an excavation project for the improvement of water supply in the Philippines.

The erector comprises a rotating structure controlled by two planetary gears with sprocket drives and a crown wheel. The structure is supported by six rollers and moves on chromium-plated tubular guides.

Segment Erector for Tunnel Boring Machine

Segment Erector for Tunnel Boring Machine

The erector is equipped with a mechanical pick-up unit in order to grasp segments.(pick-up two pins). The mechanical pick-up unit grasps and retains segments for the entire duration of the positioning operations with three independent movements:

  • Swinging = 6°
  • Pitch = 6°
  • Roll = 6°

Segment Erector for Tunnel Boring Machine

Erector technical data:

  • Longitudinal stroke= 1,800 mm
  • Overall rotation = ± 200°
  • Rotational speed = 2 rpm/minute
  • Maximum load  = 4 ton
  • Weight = 19,000 Kg
  • Intrados diameter  = 4,200 mm

Galbiati Group in “Tunnelling Journal”

Thursday, September 29, 2016

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Visit our landing page in “Tunnelling Journal” click on the photo below!

You will find information and photos of some of our realizations related to TBM- tunnel boring machines.

Advertisement in Tunnelling Journal

Tunnel Boring Machine Erectors

Monday, June 13, 2016

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Galbiati Group has recently built two 4.5 ton- segment erectors for TBM (Tunnel Boring Machine), rotating head, for the excavation of the Qingdao 5-6 metro.

The segments erectors are made up of a fixed structure and a moving one, both made of electro-welded structural metalwork and machined on machine tools.

Tunnel Boring Machine Erectors

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°

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

Below photos of the erectors completely assembled at Galbiati workshops.

Tunnel Boring Machine Erectors

Tunnel Boring Machine Erectors

Erectors technical data:

  • Total beams length = 7,000 mm
  • Overall rotation = ± 220°
  • Translation mouvement speed = N/A
  • Rotational speed = max. 2 rpm
  • Maximum load  = 4,500 Kg
  • Weight = ~ 25 ton
  • Intrados diameter  = 5,400 mm

Tunnel Boring Machine Segment Erector

Thursday, January 14, 2016

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We have recently realized one 4 ton- segment erector for a TBM (Tunnel Boring Machine) designed for an excavation project outside Mae Ngat, Thailandia.

The Tunnel Boring machine, for which the segment erector is intended, shall have a cutterhead of 4.9 m in diameter and will be used to excavate an hydraulic tunnel on site.

The erector comprises a rotating structure controlled by two planetary gears with sprocket drives and a crown wheel. The structure is supported by six rollers and moves on chromium-plated tubular guides.

Segment erector for a TBM (Tunnel Boring Machine)

Segment erector for a TBM (Tunnel Boring Machine)

The erector is equipped with a mechanical pick-up unit in order to grasp segments.(pick-up two pins). The mechanical pick-up unit grasps and retains segments for the entire duration of the positioning operations with three independent movements:

  • Swinging = 6°
  • Pitch = 6°
  • Roll = 6°

Segment erector for a TBM (Tunnel Boring Machine)

Erector technical data:

  • Longitudinal stroke= 1,800 mm
  • Overall rotation = ± 200°
  • Rotational speed = 2 rpm/minute
  • Maximum load  = 4 ton
  • Weight = 19,000 Kg
  • Intrados diameter  = 4,200 mm

Video: Segment erector for TBM

Wednesday, January 13, 2016

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Galbiati Group has recently designed and built a segment erector for TBM (Tunnel Boring Machine), rotating head with a maximum capacity load of 4 ton, for an excavation project in Mae Ngat, in Thailandia.

Below some videos realized at Galbiati workshops ​​during the final testing of the Tbm segment Erector.

Axial stroke of the erector.

Mechanical pick up unit movement.

90° rotation of segments.

Tilting of gripper.

Segment Erector for Tunnel Boring Machine

Tuesday, January 12, 2016

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Galbiati Group has recently realized one 3.5 ton- segment erector for a TBM (Tunnel Boring Machine) designed for an excavation project outside Shanxi, China.

The erector comprises a rotating structure controlled by two planetary gears with sprocket drives and a crown wheel. The structure is supported by six rollers and moves on chromium-plated tubular guides.

Below photo of the TBM segment erector set up entirely in the assembly area of Galbiati’s workshop.

Segment Erector for Tunnel Boring Machine

The erector is equipped with a mechanical pick-up unit in order to grasp segments. (pick-up two pins).The mechanical pick-up unit grasps and retains segments for the entire duration of the positioning operations with three independent movements:

  • Swinging = 6°
  • Pitch = 6°
  • Roll = 6°

Axial and radial empty stroke of the erector.

Pick up operation and radial and axial translation of the erector.

Erector technical data:

  • Longitudinal stroke= 1,600 mm
  • Overall rotation = ± 200°
  • Rotational speed = 2 rpm/minute
  • Maximum load  = 3.5 ton
  • Weight = 13,500 Kg
  • Intrados diameter  = 3,400 mm

Cutterhead Support for tunnel boring machine (TBM)

Monday, November 2, 2015

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We have recently developed one Cutterhead Support for the cutter head of a TBM designed for an excavation project in Albania.

Below are a few photos of the TBM control unit set up entirely in the assembly area of Galbiati’s factory.

Cutterhead Supports for tunnel boring machine (TBM)

Cutterhead Supports for tunnel boring machine (TBM)

Some technical data of the Cutterhead support: a bearing support 4.2 metres wide with a roller bearing 3.2 metres in diameter, 10 planetary gears with a transmitted power of 210 kW each, and a lubrication system. Gross weight: 60 tons.

Cutterhead Supports for tunnel boring machine (TBM)

The handling of the Cutterhead support at Galbiati’s factory and the subsequent packaging and transport of these were particularly complex due to the size and weight of the supports.

The Tunnel Boring machine in question, for which the control unit was intended, will have a cutter head for drilling a tunnel on site for the promising “Devoll Hydropower Project” in Albania. The project will involve use of the water resources of the River Devoll which is about 70 km long and situated south-east of the capital of Tehran, and the construction of a water supply network at Moglicë and Banjia, comprising a hydraulic tunnel in the rock about 6.7 km long. The project is expected to be completed by 2018 and will produce about 729 GWh of electricity a year, providing Albania with a 20% annual increase in electrical energy.

Tunnel Boring Machine Erectors

Tuesday, July 28, 2015

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Galbiati has recently developed two 7.5 ton- segment erectors for two hard rock double shield TBMs (Tunnel Boring Machines) designed for an excavation project outside Pfunds, Austria.

The segments erectors are made up of a fixed structure and a moving one, both made of electro-welded structural metalwork and machined on machine tools.

Tunnel Boring Machine Erectors

Tunnel Boring Machine Erectors

The fixed part consists of two longitudinal beams on which the sliding guides of wear-resistant material are mounted. The mobile part, instead, comprises a fixed ring and a rotating one controlled by two planetary drives with sprockets coupled with the fifth wheel coupling with internal teeth. The segments that make up the ring are 4: the “invert” segment, or base segment, that weighs 7.5 tons, and three segments (two shoulder segments and a key segment) each weighing 6 tons.

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°

A prob-drill is also provided with the erectors for carrying out additional drilling operations.

Below photos of the erectors completely assembled at Galbiati workshops.

Tunnel Boring Machine Erectors

Tunnel Boring Machine Erectors

Erectors technical data:

  • Total beams length = 7,000 mm
  • Overall rotation = 220° on both sides
  • Rotational speed = 2 rpm/minute
  • Maximum load  = 7,500 Kg
  • Weight = 32,000 Kg
  • Intrados diameter  = 6,300 mm

The Tunnel Boring machines in question, for which the segments erectors were intended, will have a cutter head 6.5 metres wide and will be used to drill a hydraulic tunnel for the promising hydroelectric project “Gemeinschaftskraftwerk Inn”. The project will involve the construction of a water supply network in Tyrol, comprising a hydraulic tunnel about 22.6 km long that will be drilled using two hard rock double shield TBMs. The network will take 4 years to complete (2014-2018) and the hydraulic tunnel will produce about 400 GWh of electricity a year from renewable sources, providing energy for more than a hundred thousand homes.

Cutterhead Supports for tunnel boring machines (TBMs)

Friday, July 17, 2015

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Galbiati has recently developed two bearing supports (Cutterhead Supports) for the cutter head of two hard rock double shield TBMs designed for an excavation project outside Pfunds, Austria.

Below are a few photos of the TBM bearing supports set up entirely in the assembly area of Galbiati’s workshop.

Cutterhead Supports for tunnel boring machines (TBMs)

Cutterhead Supports for tunnel boring machines (TBMs)

Some technical data of cutterhead supports: a bearing support 4 metres wide with a roller bearing 3.3 metres in diameter, 7 planetary gears with a transmitted power of 315 kW each, and a lubrication system. Gross weight: 60 tons.

The handling of the bearing supports (Cutterhead Supports) at Galbiati’s assembly shop and the subsequent packaging and transport of these was particularly complex due to the size and weight of the supports.

Below are a few photos of the TBM bearing supports during the stages of handling and packaging in the Galbiati’s assembly area.

Cutterhead Supports for tunnel boring machines (TBMs)

Cutterhead Supports for tunnel boring machines (TBMs)

The Tunnel Boring machines in question, for which the cutterhead supports were intended, will have a cutter head 6.5 metres wide and will be used to drill a hydraulic tunnel for the promising hydroelectric project Gemeinschaftskraftwerk Inn”. The project will involve the construction of a water supply network in Tyrol, comprising a hydraulic tunnel about 22.6 km long that will be drilled using two hard rock double shield TBMs. The network will take 4 years to complete (2014-2018) and the hydraulic tunnel will produce about 400 GWh of electricity a year from renewable sources, providing energy for more than a hundred thousand homes.

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