Many different models

In the NIV type VIGAN unloaders, the boom that supports the suction pipes, the filter and the airlock are rotating on a slewing ring: at the same level is located the main engine room with the turbo blower(s) and other equipment such as the compressor and the hydraulic system .

Once the unloading capacity in metric tons per hour is defined, as well as the size of vessels to be unloaded, three alternatives are feasible:

  • Self-propelled on rubber wheels

Most frequently, these machines are for unloading directly into trucks, and they have their own electrical power generator which provides a complete independence in relation with any external power supply.

When unloading into a quay side conveyor, the gantry is equipped with a special driving and rotating system of the rubber wheels for a more precise displacement in relation with this conveyor alignment.

  • Self propelled on rails

When rails are existing and/or can be installed on the quay and cargo is to be discharged mainly into a quay side conveyor, those ship unloaders are most frequently chosen. They are directly powered thanks to an electrical cable reel (drum) which allows uniform travelling movements on the rails in relation with this conveyor alignment. When it is necessary, a transformer (medium to low tension) can be installed on the unloader gantry.

It should be noted that all machines can be optionally equipped with the adequate devices that allow switching quickly to be powered by a diesel generator or by the electrical cable reel.

  • Stationary

It means that the vessel or the barge will have to move during the unloading so that suction nozzle is able to browse the whole area in the hold(s).


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