JP2001122188A - Ship deck type cargo unloading device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a ship deck type cargo unloading device excellent in safety and cost efficiency capable of efficiently unloading bulk cargo with easy work. SOLUTION: This ship deck type cargo unloading device unloading the bulk cargo B from a hold 2 of a bulk carrier ship scoops the bulk cargo B with a bucket elevator 7 by moving a gantry 4 in the longitudinal direction of the ship and moving a trolley 5 sideways to scan the hold 2, and unloads the bulk cargo B through the gantry conveyer 10, a longitudinal-direction supply conveyer 1 and a boom conveyer 14. Thereby, the center of gravity of the ship can be lowered, visibility from a bridge is secured, and sufficient hold capacity can be secured without requiring a special hull structure to allow application to general purposes.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a deck type loading / unloading apparatus for a ship for loading and unloading bulk cargo such as coal and iron ore from a hold of a bulk carrier to a port.

[0002]

2. Description of the Related Art A loading / unloading apparatus for loading and unloading bulk cargo such as coal and iron ore from a hold of a bulk carrier to a port is roughly divided into a deck type apparatus of a ship and a port facility apparatus.

[0003] The most common deck type equipment for ships uses a gat crane as shown in FIG. The gut crane 51 scoops the bulk cargo B with a bucket 52 suspended from the top of the crane, and unloads the cargo by rotating the crane.

There is also a grab bucket device shown in FIG. This apparatus scoops the bulk cargo B with a grab bucket 56 which is lifted up and down along a post 55, sends the bulk cargo to a feeder 57 having a hopper, and feeds the bulk cargo to a longitudinal feed conveyor 58 and a boom conveyor 5.
Loading and unloading through 9.

Further, as shown in FIG. 9, there is a continuous loading / unloading device having a conveyor 62 between an inner bottom 60 and an outer bottom 61 of a double bottom hull (see Japanese Patent Publication No. 6-191475). .
This apparatus continuously loads and unloads bulk cargo that has fallen onto the conveyor 62 from the opening in the inner bottom 60 with the vertical conveyor 63 and the boom conveyor 64.

On the other hand, as shown in FIG. 10, there is a device such as a harbor installation device. This device extends a boom 65 from a port, scoops bulk cargo B from a boom 65 with a bucket elevator 66 lowered into a hold, and continuously loads and unloads the cargo B through a boom conveyor 67 (Japanese Patent Laid-Open No. 7-30).
0240).

However, among these loading / unloading devices, the gut crane shown in FIG. 7 cannot scoop a large amount of bulk cargo at one time, and it takes a long time for loading / unloading operation. In addition, skilled operators are required. Further, since a large amount of bulk cargo is left in the hold, the take-out amount is reduced.

The grab bucket apparatus shown in FIG. 8 can scoop a large amount of bulk cargo at a time with the grab bucket 56 and thus can shorten the loading / unloading time. However, since the post 55 is high, the center of gravity of the ship is high. As a result, visibility from the bridge is hindered and the safe navigation of the ship is affected. Further, there is a need to move the center of gravity of the ship from bow to stern and from stern to bow, and thus control the balance of the ship.
Further, as in the case of the above-mentioned gut crane, a large amount of bulk cargo is left in the hold, so that the take-out amount is reduced.

In the case of a device in which a conveyor 62 is provided between the double bottoms 60 and 61, the efficiency of loading and unloading is improved by continuous loading and unloading, but the construction cost of the ship increases, and Not economical due to reduced capacity. Further, the outer boom 6
If one were damaged in an accident such as a collision, the hold would be flooded, and thus the ship would sink, and thus this device would not be suitable for application to oceangoing vessels.

[0010] The port installation apparatus shown in FIG. 10 is further improved in loading and unloading efficiency by continuous loading and unloading, but can be loaded and unloaded only in a port equipped with such a device. Furthermore,
This device must be provided with a mechanism that can absorb the pushing-up force of the bucket elevator 66 generated by the sway of the ship or the change in tide.

[0011]

SUMMARY OF THE INVENTION In view of the above problems, it is an object of the present invention to efficiently load and unload cargo with a simple operation, which is excellent in safety and cost efficiency. An object of the present invention is to provide a ship deck type loading / unloading device.

[0012]

SUMMARY OF THE INVENTION The present invention is directed to a deck-type loading / unloading apparatus for a ship for loading and unloading bulk cargo from a hold of a bulk carrier to a port. Using a means of scanning the hold by moving the gantry along the length of the trolley and laterally moving the trolley, scooping the bulk cargo with a bucket elevator, passing through a gantry conveyor, a longitudinal feed conveyor, and a boom conveyor Unloading bulk cargo.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The loading / unloading device according to the present invention is shown in FIG.
As shown in FIG. 3 to FIG. 3, it is installed on the hull 1 of a bulk carrier, and the structure will be described below.

Rails 3 are laid on both sides of the hold 2 of the hull 1 along the length of the ship.
You can move freely along.

A trolley 5 is attached to the gantry 4 so as to be freely movable in a lateral direction. The trolley 5 is provided with a bucket elevator 7 which can rotate a bucket 6 back and forth. The bucket elevator 7 has a visor 9 which is vertically swung by a hydraulic cylinder 8 and can be moved upward, and is mounted at a lower end of the bucket elevator 7. Further, the gantry 4 is provided with a gantry conveyor 10 positioned at the delivery end of the bucket elevator 7 and extending in the lateral direction.

Below the delivery end of the upper gantry conveyor 10 is provided a longitudinal feed conveyor 11 extending along the length of the hull 1. A vertical feed conveyor 12 with a rotatable bucket is provided downstream of the longitudinal feed conveyor 11, and a chute 13 is positioned obliquely downward from the delivery end. In addition, boom conveyor 1
4 is provided on the hull 1 and this conveyor can be extended outside the sides of the ship by swiveling.

As the upper gantry conveyor 10, the lengthwise supply conveyor 11, and the boom conveyor 14, a belt-type conveyor is applied. The upper opening of the hold 2 is covered by a hatch cover 15.

In the loading / unloading device described above, the hold 2
The bulk cargo B in the container is scooped up by the bucket elevator 7, sent to the gantry conveyor 10, and supplied in the lateral direction.
It is then sent to a lengthwise conveyor 11 and to a vertical conveyor 12. Next, the bulk cargo B is lifted by the vertical conveyor 12, dropped from the chute 13, and unloaded by the boom conveyor 14.

This loading / unloading operation is performed by moving the gantry 4 along the rail 3 and moving the bucket elevator 7 back and forth. When the bucket elevator 7 reaches the end wall of the hold 2, the trolley 5 is moved sideways, the moving direction of the gantry 4 is switched, and thus the loading / unloading operation is performed, and the entire inside of the hold 2 including all corners is performed. Scan a plane.

As shown in FIG. 4A, when moving the bucket elevator 7 backward, the bulk cargo B is scraped into the bucket 6 by lowering the visor 9. The visor 9 provides a support structure on which the bucket 6 can act so that the bucket 6 is properly filled with the bulk cargo B. Thus, the loading efficiency when the bucket elevator moves backward is improved by lowering the visor 9. As shown in FIG. 4B, when moving the bucket elevator 7 forward, the bulk cargo B is pushed out by lifting the visor 9 and is scooped by the bucket 6. in this case,
The support required for proper filling of the bucket 6 is provided by the bulk cargo B itself.

As shown in FIG. 5, the bucket elevator 7 is swung downward by the hydraulic cylinder 8 to reach the bottom of the hold 2 as the loading / unloading operation progresses. During this work,
The limit position for moving the gantry 4 backward is advanced by increasing the inclination of the bucket elevator 7.

The loading / unloading device having the structure described above is low in height and can move the gantry 4 appropriately, so that visibility from the bridge is not hindered and the center of gravity of the ship is set at a low position. Excellent marine stability can be obtained by maintaining.

Furthermore, the loading and unloading can be performed effectively with little power and without requiring special skills for the work.
Furthermore, no special hull structure is required for installation of the loading / unloading device, a sufficient hold capacity is secured, and thus the loading / unloading device can be applied for general purposes.

As shown in FIG. 6, when the loading / unloading device is applied to a large ship having a large number of holds, the gantry 4 and related equipment are installed in each hold 2 to perform the loading / unloading operation. Can be done in a short time.

When the loaded cargo is sea sand or gravel, no hatch cover is required. This is because there is no problem even if the cargo gets wet. In this case, by using a structure in which the vertical conveyor 12 and the chute 13 are omitted, and the boom conveyor 14 is positioned below the delivery end of the lengthwise supply conveyor 11, the center of gravity of the ship is different from the structure mentioned above. Can also be maintained in a lower position and can be seen more widely from the bridge.

The gantry, rails and associated equipment of the loading / unloading device described above in connection with FIG. 1 are located below the hatch cover 15 in the upper part of the hold 1. This allows bulk cargo to be unloaded and loaded in a closed state. That is, the hatch cover 15 remains closed during the loading / unloading operation. This is particularly advantageous when the bulk cargo is sensitive to weather and wind. If the ship has several holds with only one loading / unloading device according to the invention, the gantry and associated equipment of the loading / unloading device may be connected to each hold by connecting the upper portions of the holds. Need to be accessible. This is disadvantageous in terms of maritime security and also requires relatively large changes in loading and unloading of the ship and installation of the equipment. Thus, according to a particular, not shown embodiment of the invention, the gantry and associated equipment are located above the hold on the deck of the vessel. This allows the holds to be sealed from one another while at the same time allowing the unloading device to access each hold. For loading and unloading bulk cargo from a particular hold, only the hatch cover of that hold is opened, which allows the gantry to access the hold in question. However, this embodiment does not allow closed loading and unloading of bulk cargo, i.e., the hatch cover of the hold must be opened to allow loading and unloading of bulk Is exposed. To solve this drawback, the unloading device comprises a deck house (not shown), which is placed above the gantry and related equipment on the deck in connection with the unloading operation. And cover the hatch cover. This allows the hatch cover to be opened so that the bulk cargo can be unloaded from the hold in question without the danger of exposing the bulk cargo to weather or wind.

Advantages of the Invention As described hereinabove, the ship's deck-type loading / unloading apparatus according to the present invention scans the interior of the hold by moving the gantry and trolley so that the bulk cargo can be lifted by the bucket elevator. Scooping, loading and unloading cargo through a longitudinal feed conveyor and a boom conveyor, and thus unloading cargo continuously and effectively with simple operations.

The same structural design keeps the ship's center of gravity below and ensures sufficient visibility from the bridge, thereby improving ship safety.

No special hull structure is required, and a sufficient hold capacity is ensured, thus providing excellent cost efficiency.

According to a particular embodiment of the invention, a visor is arranged at the lower end of the bucket elevator, the visor being able to move a support structure on which the bucket can act to a position provided by the visor. . Thereby, when the bucket elevator moves backward, the bucket is properly filled with the bulk cargo. Therefore,
For loading and unloading operations, the bucket elevator can be moved back and forth to scan the plane of the hold, thus efficiently loading and unloading bulk cargo.

According to another particular embodiment of the invention, the gantry and associated equipment are located on a deck above the hold.
This allows the holds to be sealed from each other, thus improving the shipping security of the ship. The apparatus may include a movable deck house located on a deck above the gantry associated with the hold and unloading operations. Thus, the gantry has access to each hold below the deckhouse, which allows for the closed unloading of bulk cargo.

[Brief description of the drawings]

FIG. 1 is a partially cutaway perspective view of a ship to which a loading / unloading device according to the present invention is attached.

FIG. 2 is a perspective view schematically showing the operation of the loading / unloading device.

FIG. 3 is a cross-sectional view showing a gantry of the loading / unloading device.

FIG. 4A is a schematic diagram illustrating a scooping state when the bucket elevator is moved backward, and FIG. 4B is a schematic diagram illustrating a scooping state when the bucket elevator is moved forward.

FIG. 5 is a schematic view showing a swinging movement of a bucket elevator of the loading / unloading device.

FIG. 6 is a schematic partially cutaway side view showing an embodiment in which a loading / unloading device is applied to a large ship having a large number of holds.

FIG. 7 is a perspective view showing a ship provided with a gut crane.

FIG. 8 is a perspective view showing a ship provided with a grab crane.

FIG. 9 is a schematic longitudinal sectional side view of a ship provided with a conveyor on a double bottom.

FIG. 10 is a schematic diagram showing a port-mounted loading / unloading device.

[Explanation of symbols]

 1 Hull 2 Hold 3 Rail 4 Gantry 5 Trolley 6 Bucket 7 Bucket Elevator 8 Hydraulic Cylinder 9 Visor 10 Gantry Conveyor 11 Length Supply Conveyor 12 Vertical Conveyor 13 Chute 14 Boom Conveyor 15 Hatch Cover B Bulk Cargo

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[Procedure amendment]

[Submission date] September 28, 2000 (2009.2)
8)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claims

[Correction method] Change

[Correction contents]

[Claims]

Claims (4)

[Claims] An apparatus for loading and unloading bulk cargo in a hold (2) of a bulk carrier, said deck being provided across said hold (2) and said hull. (1) Gantry moving along the length (4)
A bucket elevator (7) provided on a trolley (5) moving laterally along the gantry (4), and the gantry (7) below a delivery end of the bucket elevator (7). 4) and a gantry conveyor (10) extending along the gantry conveyor (1).
0), a longitudinal feed conveyor (11) extending along the length of the hull (1) below the delivery end, and the hull (10) provided downstream of the longitudinal feed conveyor (11). A boom conveyor (14) swinging outward from the side of 1). 2. A vertical conveyor (1) between an upper longitudinal feed conveyor (11) and said boom conveyor (14).
2) The device according to claim 1, further comprising a chute (13) inclined from a delivery end of the vertical conveyor (12) downward to a loading end of the boom conveyor (14). apparatus. 3. A bucket visor (9) arranged at the lower end of said bucket elevator (7), said visor comprising a bucket of said bucket elevator (7) during operation of said bucket elevator (7) moving backward. 2. The method according to claim 1, wherein (6) is capable of moving to a predetermined position providing a support structure that acts to properly fill the bulk cargo.
Or the apparatus according to 2. 4. The deck house according to claim 1, wherein a movable deck house is arranged on the deck above the hold (2) and the gantry (4) and associated equipment of the device. Or the apparatus according to 3.