THE LIFTING SPIRIT
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Segments

During the past 20 years, Acimex developed a wide range of heavy lifting devices, that are used for the handling of tunnel lining segments.
The success of the Channel Tunnel excavation using tunnel boring machines (TBM) gave a significant push to this technology and one does not count any more the tunnels constructed with this technique.


ACIMEX vacuum devices working with suction pads have their part in the realization of these projects and are recognized by all the main project managers as well as by the major TBM manufacturers.


With more than 500 projects realized in more than 50 countries, ACIMEX became the number one in its field of competence.
Demoulder/Turner 90° Turning Vacuum Lifter

This vacuum lifter provides, in one take, the demoulding and storage of the segment on its edge in conditions of absolute safety.

It combines the advantages of the demoulding vacuum lifter and the segment turning system.

In the event of a power cut the load is guaranteed to be held for more than 30 minutes.

Function: Demoulding and turning all segments on their extrados by 90°. Suction on the segment in the horizontal or vertical (option) position.
Location: inside or outside
Load capacity: up to 20 t.
Unladen weight : 1500 to 5000 kg.

Technical description:

  • 1 welded fabricated frame with a central attachment pin.
  • The welded fabricated frame serves as a vacuum tank and holds the components.
  • 1 or 3 suction pads (according to the segment to be lifted) pivoting around the frame by 2 journals.
  • Rotation of the suction pads by a hydraulic cylinder.
  • 2 bistable solenoid valves for the segment lift/release functions.
  • Automatic suction pad selection according to the segment to be handled
  • 1 vacuum pump
  • 1 oil bath vacuum gauge on the tank
  • 1 vacuum switch for controlling the optical and acoustic alarm systems.
  • 1 electrical box containing all the power and control relays
  • 1 portable control box containing the tilting device controls and 5 meters of cable
  • 1 hydraulic pump unit
  • Supply voltage: 400V/50Hz
  • Documentation in English
  • CE certificate

 

 
 
Storage Vacuum Lifter

The ACIMEX self-contained storage lifter enables segments to be lifted and transported in complete safety; it is extremely flexible to use and compact.It has its own IC engine and it is very easy to use.

Designed for use with all lifting machine fork widths.

The forklift truck remains available for other handling jobs at all times, In the event of a power cut the load is guaranteed to be held for more than 30 minutes.

Function: Horizontal handling of all segments on their intrados.
Location: Outside.
Load capacity: up to 15 t.
Unladen weight: 1500 kg to 3000 kg.

Technical description:

  • 1 welded fabricated frame acting as a vacuum tank and holding the various components.
  • The frame is fitted with 2 sleeves for lifting by the 2 forks of a forklift truck.
  • 1 to 3 suction pads fitted with 50x50 rubber seals mounted in a steel profile for easy changing.
  • 2 bistable solenoid valves for controlling the suction pads.
  • Automatic suction pad selection
  • 1 single-stage vacuum pump, oil-lubricated and air-cooled, controlled by an IC engine with autonomy of 8h. Diesel fuel consumption: 1.2 liters/hour.
  • Optical and acoustic alarm systems.
  • 1 electric engine starting control box.
  • 1 battery
  • 1 radio control enabling the lifter to be controlled from the forklift truck cab without any wire link.
  • The release is possible if the segment is placed down.
  • CE certificate.

 
 
Mechanical Segment Grab

This device allows several segments to be handled at the same time without damaging the concrete edges.
It works without external energy. Closing and locking are by gravity in complete safety.

Function: Horizontal handling of a pile of segments.
Location: outside.
Load capacity: up to 30 t.
Unladen weight: 2000 à 5000 kg.

 


Technical description:

  • Handling of a pile of segments (number to be specified).
  • Possibility of handling piles containing a smaller number by adding a spacer in the grab (option).
  • 1 fabricated assembly controlling the opening and closing of 2 grabs by gravity.
  • The grabs are not in contact with the sides of the segments.
  • Clamping of the top segment on the intrados by a gravity-operated central clamp. This device applies an identical clamping force to all the segments in the pile.
  • Automatic grab opening and closing control by a latch.
  • Attachment of the grab to the overhead crane lifter at 2 points or one central point (slings not supplied).
  • Appliance working without energy.
  • Documentation in English
  • CE certificate

 
 
Off-Line / Demoulding Vacuum Lifter

 

This vacuum lifter lifts the segments either on the intrados or the extrados, as required, to move them to a place of storage or loading.

This operation is done in complete safety. In the event of a power cut the load is guaranteed to be held for more than 30 minutes.

Option: Arm of hydraulic safety.
Function: Horizontal handling of all segments on the intrados/extrados.
Location: outside / inside.
Load capacity: up to 20 t.
Unladen weight: 750 à 2500 kg.

Technical description:

  • 1 welded fabricated frame, acting as a vacuum tank and carrying the components.
  • 1 oval ring for attachment to the hook-crane.
  • 1 or 3 suction pads (depending on the voussoirs to be lifted) suspended under the frame by a pin, fitted with 50x50 rubber seals mounted in a steel profile for easy changing.
  • 1 (for 1 suction pad) or 2 bistable solenoid valves (for 3 suction pads) for the suction pad lift/release functions.
  • Automatic selection of the solenoid valves according to the segment to lifted (large segment or key).
  • 1 oil-lubricated vacuum pump
  • 1 oil bath vacuum gauge on the tank
  • 1 vacuum switch for controlling the optical and acoustic alarm systems.
  • 1 electrical box containing all the power and control relays
  • 1 push button control box with 5 meters of cable
  • Supply voltage 400V/50Hz
  • CE certificate
  • Documentation in English

 
 
Hydraulical Segment Grab

This device allows several segments to be handled at the same time without damaging the concrete edges.
Closing and locking are achieved by hydraulic clamping.
Its vertical dimensions are compact.

Function: Horizontal handling of a pile of segments.
Location: outside.
Load capacity: up to 30 t.
Unladen weight : 2500 kg to 5000 kg.

 

Technical description:

  • 1 welded fabricated frame suspended from the overhead crane by 2 fixed points (between centres distance: 2000 mm).
  • 2 mountings controlled by hydraulic cylinders and guided by cam rollers which handle the segment, slide on the frame.
  • The positioning of the grab for gripping the 2 segments simultaneously is done by 4 fixed buffers.
  • 1 on-board electrical box containing all the power and control relays.
  • Movement control by radio control
  • 1 hydraulic pump unit
  • Documentation in English
  • CE certificate

 
 
Hydraulic/Electric Turning Lifter

This vacuum lifter provides, in one take, the demoulding and storage of the segment on its extrados by turning it 180° in conditions of absolute safety. It combines the advantages of the demoulding vacuum lifter and the segment 180° turning system.
Provide suitable wedges or stands to receive the segment and allow the suction pad to be removed.
In the event of a power cut the load is guaranteed to be held for more than 30 minutes.

Function: Demoulding and turning all segments on their extrados by 180°.
Location: inside.
Load capacity: 2,5 to 6 t. (Hydraulic)
Load capacity: up to 2 t. (Electric)
Unladen weight: 2500 à 3500 kg.

Technical description :

 

  • 1 welded fabricated frame, acting as a vacuum tank and carrying the components.
  • Attachment to the hook-crane by a ring.
  • 1 counterweight enables the appliance to be balanced laden or empty.
  • 1 or 3 suction pads (depending on the segments to be lifted) fitted with 50x50 rubber seals mounted in a steel profile for easy changing, swivel under the frame by 180°.
  • Rotation of the suction pad by rack and pinion controlled by a hydraulic cylinder.
  • 1 bistable solenoid valve for the suction pad lift/release functions.
  • 1 oil-lubricated vacuum pump
  • 1 hydraulic pump unit
  • 1 oil bath vacuum gauge on the tank
  • 1 vacuum switch for controlling the optical and acoustic alarm systems.
  • 1 electrical box containing all the power and control relays
  • 1 push button control box with 5 meters of cable
  • Supply voltage: 400V/50Hz
  • Documentation in English
  • CE certificate


*Electric version:

  • Rotation of the suction pad by geared and braked electric motor.
  • Electric sensing for the end of the suction cup rotation movement.

 

 
 


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