ARRANGEMENT IN GENERAL CARGO SHIPS HAVING SIDE PORT OPENINGS

Abstract: A general cargo ship (10) is equipped with side port openings (34, 35) for transporting freight (59) inwardly and outwardly from the ship. The ship (10) is equipped with an upper superstructure (25) in a continuous length above a fore-and-aft row of upwardly opening holds (11a-11f). The holds have maximum hatchways. There is defined in the superstructure a common, shielding transport compartment (33) for the holds which permits movement of a transport arrangement (36, 37) with freight (58) fore-and-aft and transversely a distance above the holds and via a locally defined side paort opening (34).

Description: ARRANGEMENT IN GENERAL CARGO SHIPS HAVING SIDE PORT OPENINGS The present invention relates to an arrangement in ships, especially general cargo ships, equipped with side port openings for transporting freight inwardly into and outwardly from the ship. In connection with the loading and unloading of ships via side port openings it is customary to handle the freight in several successive operations, for example by handling the freight with fork lift trucks on quays and with separate hoisting equipment for handling freight from quay to ship and in certain regions internally in the ship and with fork lift trucks or other transport arrangements in remaining regions internally in the ship. It is an appreciable problem that the freight must be put down be¬ tween transfer from transport means to transport means an must be grasped and handled with various equipment and thereby the freight can be exposed to unnecessary damage during the transport transfer between ship and quay. With the present invention the aim is an arrangement with which the freight can be handled in one single con¬ tinuous transport operation with one and the same tran¬ sport system. More specifically the objective is to move the freight, exclusively by way of rectilinear movements and in a precisely controlled manner, with one and the same transport system from quay directly into position in the ship or from a position in the ship directly into position on the quay. In particular the objective is to be able to handle units of freight so that on loading the freight can be put down at precisely established locations in the hold according to a set control program, or so that on unload¬ ing the freight can be fetched again from corresponding precisely established locations in the hold for unloading in a predetermined sequence directly into place at the unloading location. The arrangement according to the invention is char¬ acterised in that the ship is equipped with an upper superstructure in a continuous length over a fore-and-aft row of upwardly opening holds, which have maximum hatch openings, for defining a common, shielding transport space which allows movement of a transport arrangement with freight fore-and-aft and tranversely a distance above the holds and via a locally defined side port opening or a small number of locally defined side port openings to and from the ship. By means of superstructure there is the possibility of providing an effective transport system for serving the holds one after the other with one and the same set of transport means, for example via one and the same side port opening. Alternatively two or more sets of such tran¬ sport means can be employed for serving their respective groups of holds via a number of side port openings adapted for this. By this there is the possibility of allowing the transpor of freight to and from the ship to be carried out in a simple and effective manner internally in the ship, with effective protection agains weather and wind and with loading hatches to the different holds open to the maximum. The arrangement is further characterised in that at the under side of the superstructure there is fastened a first set of a fore-and-aft transport rails for the sup¬ port of a first fore-and-aft running transport means, that the first transport means is equipped with a second set of transverse transport rails for the support of the second transverse running transport means, which can be moved from a position within the superstructure to a position projecting partly outside the ship via associated side port openings, that the second transport means is equipped with a third set of transverse transport rails for the support of a third transport means, which can be moved from an inner position to an outer position on the second transport means and which is equipped with a hoist for lifting and lowering freight relative to the third tran¬ sport means. By means of the afore-mentioned transport system a simple, rectilinear movement of the freight can be ensured, controlled by the transport means and the hoist one after the other, for handling the freight in a gentle and accurate manner, determined by simple paths of move¬ ment of the transport means and the hoist. In addition the arrangement is characterised in that the first set of transport rails is placed at transverse outer sides of the superstructure with the first transport means oveable in the space between the rails, that the first and second transport means and the second set of transport rails form a loading and unloading arrangement known per se extendable telescopically in a transverse direction, and that the third transport means is formed i a manner known per se by a travelling crab which is dis- placeable along the third set of transport rails. Further features of the invention will be evident from the following description having regard to the accompanying drawings, in which: Fig. 1 shows a ship according to the invention, illustrated in side elevation. Fig. 2 shows the same as in Fig. 1 illustrated in plan elevation. Fig. 3 shows a cross-section along the line 3-3 of Fig. 1. Fig. 4 shows in side elevation details in the tran¬ sport means illustrated in a collapsed telescopic posi¬ tion. Fig. 5 shows a section of Fig. 4 illustrated in plan elevation. Fig. 6 shows in side elevation the same as in Fig. 4, illustrated in a pushed out telescopic position. Fig. 7 shows an end elevation of Fig. 5. In Fig. 1 there is shown a general cargo ship 10 having a number (six) of separate holds lla-llf which succeed eaαh other in the fore-and-aft direction and which are separated from each other by means of pairs of trans¬ verse partition bulk heads 12 and 13 and an intermediate hollow compartment 14. Each hold in the illustrated embodiment is provided with a freight hatch opening 15 which stretches over the whole length and breadth of the hold. Each hold is defined fore-and-aft between two oppo¬ sitely disposed partition bulkheads 12,13 and is defined transversely between two side bulkheads 16,17 which are placed just within a respective included side 18 and 19 of the -shjlp. The holds are shown having optimum depths and extend from an inner bottom 20, which is placed a distance above bottom 21 of the ship, to the top of a freight hatchway coaming 22 which projects a distance upwardly above a main deck, that is to say intermediate deck 23 of the ship. Just above the hatchway coaming 22 there is shown a dismountable fence 24 for enclosing freight which projects upwardly above the hatchway coaming 22. There is shown a superstructure 25 (see Fig. 3) which projects upwardly from the deck 22 over the major portion of the longitudinal dimension of the ship. More specifically the superstructure has sides 26,27 which extend flush with the sides 18,19 of the ship and a for¬ ward bulkhead 28 (see Fig. 1) just by the bow of the ship together with a rear bulkhead 29 at the stern of the ship or in the leading edge of a conventional ship's construc¬ tion 30. On the top of the superstructure is present a shelter deck 31 and in the rear edge of the deck 31 is present a bridge construction 32. By means of the super¬ structure 25 there is formed a large, continuous, common transport compartment 33 (see Fig. 3) above the row of holds. The superstructure 25 is adapted to provide effec¬ tive cover and shielding of the holds at the same time as a transport compartment is provided with the abundant possibility of movement for an effective transport arrangement or several cooperating transport arrangements for moving freight internally in the ship. By means of th two side port openings 34 and 35 as shown on the one side 26 of the superstructure (equivalent side port openings not shown further can be placed on the opposite side of the superstructure) freight can be conveyed inwardly into or outwardly from the ship in a movement which is connec¬ ted to the movements internally in the ship. There are shown (Fig. 1 and 2) two separate transport arrangements 36,37 which can be served via their respective side port openings 34,35. The transport arrangements comprise, as shown in Fig. 4-7, a first pair of fore-and-aft transport rails 38,39 (such as shown in Fig. 3) are fastened to a respec¬ tive one of the sides 26,27 of the superstructure 25 thigtly up under the deck 31. The rails are preferably common rails for both transport arrangements, so that eac of the transport arrangements can overlap as required the pattern of movement for the remaining transport arrange¬ ment. In each transport arrangement there can be supporte on rails 38,39 by means of traversing wheels 40 a first transport means or carriage 41, which is moveable longi¬ tudinally along the rails by means of a rack and drive motor with associated drive gear wheels (not shown further) . On the carriage 41 there is fastened another pair o transverse transport rails 45,46. On the rails 45,46 ther is supported by means of traverse wheels 47 a second tran sport means or carriage 48 which together with the carri- age 41 form a telescopically displaceable transport arrangement. By means of a rack 49 on the carriage 48 and a drive motor 50 with associated drive gear wheels 51 the carriage can be axially displaced relative to the carriage 41 and in this way moved a distance outside the side of the ship via the associated side port opening 34 (35). The carriages 41 and 48 are placed heightwise directly above each other and are separately designed with an annular framework having an intermediate compartment 52 as shown in Fig. 5. In the hollow compartment 52 a third transport means is moveable in the form of a travelling crab 53. By means of traverse wheels 54 the travelling crab 54 is supported on a third set of transport rails 55, 56'on the carriage 48. On the travelling crab 53 there is fastened a hoist machinery 57 for a hoist 58 for lifting and lowering of a freight 59 directly to and from a vehicle 60 on a quay 61 or to and from a landing location in place in a hold. In Fig. 2 there is indicated a vehicle 60* which leaves the loading/unloading location and two vehicles 60 below their respective loading/unloading locations just by their respective side port openings in the ship. There are indicated the associated side port 34a or 35a swung up¬ wardly and outwardly to form a roof over the loading/un¬ loading location. In Fig. 3 there are indicated four different positi¬ ons for the travelling crab 53 with associated freight 59, that is to say a first position outside the side 18 of the ship with the telescopic arrangement pushed partly outside the side of the ship and with the travelling crab 53 in the one outer position in associated second carriage 48, a second position with the telescopic arrangement pushed within the side of the ship and with the travelling crab 53 in a position corresponding to the first position, a third position with the travelling crab moved to a central position in the second carriage 48 and a fourth position with the travelling crab 53 moved to a second outer posi¬ tion in the second carriage. By means of for example computer control with com¬ plete freight handling according to an established contro program it is possible to direct the movements of the hoist 58, the travelling crab 53 and the two carriages 41 and 48 in an accurately controlled manner to and from the loading location from and to the unloading location as required.

Claims: PATENT CLAIMS 1. Arrangement in ships, especially general cargo -ships (10), equipped with side port openings (34,35) for tran¬ sporting freight (59) inwardly into and outwardly from the ship, characterised in that the ship (10) is equipped with an upper superstructure (25) in a continuous length over a fore-and-aft row of upwardly opening holds (lla-llf), which have maximum hatch openings, for defining a common, shielding transport compartment (33) which allows movement of a transport arrangement (36,37) with freight (58) fore- and-aft and transversely a distance above the holds and via a locally defined side port opening or a small number of locally defined side port openings (34,35) to and from the ship. 2. Arrangement in accordance with claim 1, characte¬ rised in that a first pair of fore-and-aft transport rails (38,39) is fastened to the under side of the superstruc¬ ture for support of a first fore-and-aft running transport means (41), that the first transport means (41) is equip¬ ped with a second pair of transverse transport rails (45, 46) for support of a second transverse running transport means (48) which can be moved from a position within the superstructure (25) to a position projecting partly out¬ side the, ship via associated side port openings (34,35), that the ' second transport means (48) is equipped with a third pair of transverse transport rails (55,56) for sup¬ port of a third transport means (53) which can be moved from an inner position to an outer position on the second transport means (48) and which is equipped with hoist (58) for lifting and lowering of freight (59) relative to the third transport means (48). 3. Arrangement in accordance with claim 2, characte¬ rised in that the first set of transport rails is placed at transverse outer sides (18,19) of the superstructure with the first transport means (41) moveable in the space between the rails, that the first (41) and second (48) transport means and the second set of transport rails for a loading and unloading arrangement known per se tele- scopically extendable in a transverse direction, and that the third transport means is formed in a manner known per se by a travelling crab (53) which is displaceable along the third set og transport rails.

Inventors: ARALT PER TYBRING, ARALT, PER, TYBRING
Applicants: JEBSEN SKIPSREDERI, KRISTIAN GERHARD JEBSEN SKIPSREDERI A/S
Application year: 1990
Main classification: B63B27
IPC codes: B63B15, B63B19, B63B27