Apparatus for loading and unloading cargo at sea-side of ship

Abstract

Disclosed is an apparatus for loading and unloading cargo at a sea-side of a ship mooring at a quay wall, thereby enabling cargo to be loaded or unloaded simultaneously at both sides of the container ship by both cargo-handling apparatuses at the sea-side and the land-side. The apparatus comprises: a barge having a mooring side corresponding to one side of the ship; a barge anchoring unit for anchoring and releasing the barge at and from a predetermined place; at least one container crane disposed on an upper surface of the barge and being movable in a longitudinal direction of the barge; and at least one drawbridge for connecting an end of the mooring side of the barge to the quay wall. The apparatus remarkably improves the cargo-handling capability of a harbor in comparison with that by the prior art. Further, the apparatus reduces the time for which a ship stays at a quay wall, thereby improving the availability of the quay wall and reducing the physical distribution cost.

Description

FIELD OF THE FIELD [0001] The present invention relates to an apparatus for loading or unloading cargo on or from a ship mooring at a quay wall of a harbor, and more particularly to an apparatus for loading and unloading cargo at a sea-side of a ship mooring at a quay wall, thereby enabling cargo to be loaded or unloaded simultaneously at both sides of the container ship by both cargo-handling apparatuses at the sea-side and the land-side. BACKGROUND OF THE INVENTION [0002] In general, marine transportation using a container ship is advantageous in that the marine transportation can carry more cargo and requires less cost in comparison with transportations by other transport means. Countries surrounded by the sea like the Republic of Korea have been considerably dependent on the marine transportation in a trade with foreign countries. [0003] Particularly, the marine transportation industry is currently in pursuit of larger ships, in order to increase the quantity of cargo transporte...

AI Technical Summary

Benefits of technology

"The present invention provides an apparatus for loading and unloading cargo at a sea-side of a ship mooring at a quay wall. The apparatus includes a barge, a barge anchoring unit, at least one container crane, and at least one drawbridge. The barge anchoring unit can anchor and release the barge at a predetermined place. The container crane is movable in a longitudinal direction of the barge. The drawbridge connects the mooring side of the barge to the quay wall. The apparatus also includes ballast tanks for rising and sinking the barge, and cushioning chambers under the ballast tanks for absorbing impact. The drawbridge has a deck holder assembly for folding and unfolding the bridge deck. The apparatus can load and unload cargo simultaneously at both sides of the container ship by both cargo-handling apparatuses at the sea-side and the land-side."

Problems solved by technology

However, it has been very difficult to expand the cargo-handling capability in the conventional harbors, since there is a limit to the number of cranes which can be simultaneously operated at the same quay-wall in the conventional harbors, due to restriction to the space which can be occupied by combination of cargo-handling systems, movement lines of transport vehicles, etc.

Therefore, larger ships deteriorate availability of a quay wall and increase the physical distribution cost.

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