Material or article handling – Marine loading or unloading system – By use of endless belt conveyor on marine vessel
Patent
1995-03-15
1996-05-21
Terrell, William E.
Material or article handling
Marine loading or unloading system
By use of endless belt conveyor on marine vessel
198516, 198519, 4141429, B63B 2722
Patent
active
055183530
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention relates to an arrangement in an unloading system, especially for unloading bulk material from holds in a transport vessel, said system comprising a belt conveyor extending substantially in the longitudinal direction of the ship close to the bottom thereof, a scraper unit in each hold bringing bulk material to the area of the belt conveyor, as well as one or more lifting means co-operating with said belt conveyor for lifting the masses to a common outfeed device for bringing said masses ashore.
PRIOR ART
In connection with unloading of bulk material from a ship, there are often used land based unloading devices, for example a conveyor which is suspended from a crane arm, and which can be designated as a vertical conveyor, and which is intended to transport bulk material up from the hold. Such land based vertical conveyors which can be displaced to the various parts of the hold, are however relatively expensive and will rarely be present in all harbours in which unloading of bulk material is intended.
Another solution to unloading the hold of a transport vessel resides in installation of affixed unloading devices in the vessel itself. Such unloading devices which are mounted in the hold itself, are generally very complicated and very often suffering from the disadvantage that they cannot be used for complete removal of all bulk material. This is especially the case in connection with unloading of for example soya derivatives, cement, gypsum powder or aluminum oxide.
Solutions to the unloading problems of the above mentioned type are discussed in for example SE 419 737, GB 1 567 877 and GB 1 538 088.
OBJECT OF THE INVENTION
The task underlying the present invention is to provide a simple and effective unloading system, which entails that the cargo vessels to which the unloading system is to be adapted, should not only be used for transport of bulk material, for example gypsum or similar bulk material, but also for transport of usual, piece goods and similar.
In other words, it is aimed for providing an unloading system entailing that the vessel does not need to be a special ship which comprises especially adapted hold walls or bottoms, or comprises especially adapted loading devices making it difficult to use the vessel for anything else than bulk material.
In other words, the present system is especially developed for being mounted substantially in general bulk cargo ships, but possibly also usual piece goods ships, thereby providing excellent adaptabilities and very small requirements as regards changes in the structure of the ship, the elements included in the system facilitating a simple and quick mounting, and the finished installation resulting in relatively small losses in volume.
DISCUSSION OF THE PRESENT INVENTION
In an unloading system of the type as stated in the preamble, the above stated problem is solved in that the belt conveyor is mounted between vertical supports supporting inclined downwardly extending guiding plates on the side of the conveyor, and that said scraper unit comprises a bent lower portion corresponding substantially to the shape of said guiding plates and the ajoining ship bottom portion. Appropriately, there are in the area of the supports along the belt conveyor provided a series of hoppers serving to dose the masses from a scraper unit and on to the belt conveyor.
An appropriate embodiment of the system according to the present invention is the fact that there are provided a first belt conveyor extending longitudinally along the ship through a first number of holds towards one of the central transverse bulkheads of the ship, as well as a second belt conveyor extending longitudinally along the ship in opposite direction through a second number of holds towards said central transverse bulkhead, and that at each side of the central transverse bulkhead there are provided two parallelly arranged lifting means, especially cup conveyors co-operating with a respective belt conveyor for lifting said masses up to the common outfee
REFERENCES:
patent: 1427091 (1922-08-01), Case
patent: 2505982 (1950-05-01), Meissner
patent: 3414144 (1968-12-01), Lassing
patent: 3489296 (1970-01-01), Snow, III
patent: 4242026 (1980-12-01), Vaughan et al.
Nilsen Walter
Pettersen Jan E.
Krizek Janice L.
Nilsen Walter
Terrell William E.
LandOfFree
Arrangement in an unloading system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Arrangement in an unloading system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Arrangement in an unloading system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2033663