JPS6133755B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a ship for dumping waste products into the ocean, and particularly to an ocean dumping ship suitable for use when dumping waste products packed in a cylindrical container.

Traditionally, when dumping cylindrical containers containing radioactive waste into designated sea areas, the cylindrical containers were loaded in the hold of a ship, lifted out of the ship using a derrick boom and a cargo lift, and then dropped into the sea. ing.

However, with such conventional ocean dumping vessels, workers have to approach the cylindrical containers and hook them with a cargo lift, a dangerous task, and also lift out the cylindrical containers one by one and dump them. There is a problem in that it cannot be expected to improve work efficiency if the

In addition, conventional ocean dumping ships have been equipped with dumping equipment at a fixed location on the ship, and the dumped materials inside the ship are transferred to the dumping equipment using a conveyor or elevator, and then mechanically dumped outside the ship. However, with the above-mentioned dumping method, sufficient cargo handling efficiency cannot be achieved because the dumping work is carried out after the dumped material is transported to the dumping equipment installed at a fixed location on the ship. The problem is that there is no.

The present invention aims to solve these problems by remotely removing cylindrical materials loaded in a ship's hold using dumping equipment installed on the ship's mobile crane that can lift the materials. The purpose of the present invention is to provide an ocean dumping vessel that can be operated to safely and efficiently drop items overboard.

For this reason, the ocean dumping vessel of the present invention is designed to support the cylindrical dumped objects loaded and accommodated in the hold so as to extend horizontally and in the ship's ship direction, each passing through the center of the circular end surface. Vertical fall prevention members arranged in a row, and a plurality of support pieces to support and lift the lower parts of each of the plurality of cylindrical dumped objects that are supported by the vertical fall prevention members and lined up horizontally in the cargo hold. A crane is provided with hanging tools arranged in rows, and is capable of traveling on the ship's hull deck in the direction of the ship's ship while straddling the upper hatch of the hold, and the crane is provided with the lifting tools,
The crane is provided with a dumping platform capable of receiving cylindrical dumped material lifted from inside the hold by the lifting device and dumping it outside the ship, and the dumping platform is installed so as to be tiltable toward the side of the ship. There is.

Hereinafter, an ocean dumping ship as an embodiment of the present invention will be explained with reference to the drawings. Fig. 1 is a vertical cross-sectional view of the center of the hull, Fig. 2 is a cross-sectional view taken along the line A--A in Fig. 1, and Fig. 3 is a cross-sectional view taken along line A--A in Fig. is a cross-sectional view taken along line B-B in Figure 1, Figure 4 is a plan view of the hold, Figure 5 is
Figure 6 is a vertical cross-sectional view of the ship's midship during jettisoning, Figure 7 is a cross-sectional view of the ship's midship during jettisoning, Figures 8 and 9 are plan views of the hold during jettisoning, and Figures 10, 11, and 12 are cross-sectional views of the ship's hold during jettisoning. Figures 13 and 14 are cross-sectional views of the center of the ship during jettisoning, Figure 15 is a detailed cross-sectional view of the center of the hold, and Figure 16 is a detailed plan view of the center of the hold. It is a diagram.

As shown in these figures, a hull 1 is provided with a hold 2 and a double bottom 3, and a longitudinal longitudinal bulkhead 4 is provided in the hold 2. In addition, an upper deck 5, a hatch coaming 6, and a hatch cover 7 are provided on the hull 1, and rails 8 are provided on both sides of the upper deck 5, along which a crane 9 can straddle the upper hatch of the hold 2. It is designed to be able to travel and move in the length direction of the hull 1.

The crane 9 is designed to be able to stop anywhere along the length of the hold 2, and is equipped with a lifting device 10 and a dumping platform 12, and the dumping platform 12 is attached so as to be tiltable toward the side of the ship. has been done. The hanging tool 10 is provided with movable support pieces 10a that sandwich the lower portions of the plurality of cylindrical objects 13 from the front and back directions, and a wire rope 11 is provided to move the hanging tool 10 in the vertical direction. There is. Dumping table 12
By loading the cylindrical objects 13 and then lifting one end and tilting it toward the side of the ship, each cylindrical object 13 can be dumped out of the ship at the same time. It is configured in a foldable manner.

Furthermore, vertical fall prevention members 14 are arranged in a line in the hold 2, and cylindrical dumped objects 13 are loaded and accommodated in the hold 2 so as to extend horizontally and in the ship's ship direction.
The cylindrical dumping object 13 is thereby prevented from falling over in the longitudinal direction of the hull 1.

Note that a beam 15 is provided on the hull for fixing the anti-overturning material 14, and a spacing adjustment material 16 is provided between the cylindrical waste 13 and the longitudinal bulkhead 4.

With the above configuration, the cylindrical dumped object 13 is removed from the ship's hold.
When dumping into the sea, first remove the hatch cover 7.
is released, and then the crane 9 is stopped at a predetermined position. Then, the hoist 10 is lowered to the position of the uppermost cylindrical dumped object 13' in the hold 2. (5th,
(See Figures 6, 7, and 8) Next, as shown in Figures 9 and 10, the cylindrical waste 13' is inserted into the support valve 10a of the hanging tool 10, and then the hanging tool 10 is moved using the wire rope 11. and roll it up. At that time, the cylindrical waste 13 is
As shown in the figure, it is inserted into the hanger 10.

In the work of hoisting the cylindrical waste items 13 using the above-mentioned hanging tool 10, each cylindrical waste item 13 is supported at the center of its circular end face by the vertical anti-falling member 14 and is lined up in an orderly manner. The support of each cylindrical waste 13 by 10a is performed extremely smoothly.

Next, as shown in FIG. 12, after moving the hanging tool 10 to the top of the dumping platform 12 in front,
0, as shown in FIG. 13, the dumping platform 12
A cylindrical waste material 13' is placed on top of the cylindrical waste material 13'. and,
As shown in FIG. 14, by lifting one end of the dumping platform 12 and tilting it toward the side of the ship, the cylindrical dumped material 13' is rolled out to the side of the ship and dumped into the sea.

By repeating the above-mentioned operation, all the cylindrical objects 13 can be dumped into the sea.

In this manner, the ocean dumping vessel of the present invention provides the following effects and advantages.

(1) When dumping cylindrical materials containing radioactive materials, workers can perform the dumping work without having to come into direct contact with the materials.

(2) The lashing of the dumped items does not require any special lashing equipment, and is carried out using the hull vertical bulkheads, adjustment materials, etc., and the vertical tipping prevention material is used to secure the circular end face of each cylindrical dumped item. Since the center portion is supported, the cylindrical waste can be efficiently supported by each support piece of the hanger.

(3) Dumping work is possible even when the ship is moving to a certain extent.

(4) The height of the crane can be lowered by combining the hoist and the dumping platform.

(5) Since the crane itself does not extend over the side, it becomes a simple crane.

(6) The crane itself, which has a hoisting device with multiple support pieces arranged in a row and can travel toward the ship's ship, is equipped with a dumping platform, and the dumping platform is attached so that it can tilt toward the side of the ship. A plurality of cylindrical objects lifted by a crane are immediately received by the dumping platform, and by tilting the dumping platform toward the side of the ship, the cylindrical objects can be dumped all at once outside the ship. Compared to the case where dumping equipment is installed at a fixed location, cargo handling efficiency can be significantly improved.

[Brief explanation of the drawing]

The figures show an ocean dumping ship as an embodiment of the present invention.
The figure is a cross-sectional view taken along the line A-A in Figure 1, Figure 3 is a cross-sectional view taken along the line B-B in Figure 1, Figure 4 is a plan view of the hold, and Figures 5 and 6 are the cross-sectional view taken along the line B-B in Figure 1. Figure 7 is a cross-sectional view of the ship's center during jettisoning, Figures 8 and 9 are plan views of the hold during jettisoning, and Figures 10, 11, and 12 are ship's hull during jettisoning. 13 and 14 are center longitudinal cross-sectional views of the hull during jettisoning, FIG. 15 is a detailed center cross-sectional view of the hold, and FIG. 16 is a detailed plan view of the center of the hold. 1... Hull, 2... Hold, 3... Double bottom, 4... Longitudinal bulkhead, 5... Upper deck, 6... Hatch coaming, 7... Hatch cover, 8... Rail, 9... Crane, 10...
Hanging tool, 10a...Movable support piece, 11...Wire rope, 12...Dumping table, 13...Cylindrical dumped object, 14...
Vertical fall prevention material, 15... Beam, 16... Spacing adjustment material.

Claims (1)

[Claims] 1. Vertical tipping preventers arranged in a row in the hold to support cylindrical dumped objects loaded and stored in the hold so as to extend horizontally and in the ship's direction, passing through the center of each circular end face. and a lifting device having a plurality of support pieces arranged in a row to support and lift the lower part of each of the plurality of cylindrical dumped objects arranged horizontally in the hold and supported by the vertical fall prevention member. In preparation, the above-mentioned lifting device is installed on a crane that can travel in the direction of the ship's hull on the ship's deck while straddling the upper hatch of the above-mentioned cargo hold. An ocean dumping ship, characterized in that the crane is provided with a dumping platform capable of dumping to the outside, and the dumping platform is mounted so as to be tiltable to the side of the ship.