JPS60154979A - Repair of ship - Google Patents

Abstract

PURPOSE:To efficiently repair only broken parts by supporting the both broadside parts of the broken ship bottom part by wooden blocks and cutting and carrying-out the broken ship bottom part and carrying-in a new ship bottom part and joining it. CONSTITUTION:When the ship bottom part of a tanker, etc. which has a double bottom and is broken by a stranding accident is repaired, the broken ship is accommodated into a dock 1, and the both broadsides 2S of the broken ship bottom part 2A are supported by wooden blocks 3. The broken ship bottom part 2A is cut into a tunnel form, and carried-out by flat cars 4 which travel on rails 5. A new ship bottom part prepared separately is carried-in, and repair is performed through joining. Therefore, the repairing work can be peformed without demounting the fittings on a deck, and the whole processes of repairing work can be levelled, and repairing work can be executed smoothly and at a low cost.

Description

TECHNICAL FIELD OF THE INVENTION The present invention relates to a method for efficiently repairing the bottom section of a ship having a double bottom.

[Conventional wave fllli] When a large vessel with a double bottom such as a tanker is damaged due to the bottom being pushed up due to a serious accident such as running aground, or when the side of the ship is hogged in a ``F'' shape along with the bottom. If so, repairs will be a very major undertaking.

In other words, according to the conventional ship repair method, the
It will be necessary to remove the equipment such as the wooden crane, and then remove various equipment inside the ship to carry out major repairs to the bottom 91 (and repair the entire ship's hull).

Due to these circumstances, this repair had the drawback of requiring a considerable period of time and a large amount of cost.

If the repair period is long, there is a problem in that the repair cost increases and the dock is occupied for a long period of time, making it impossible to use the dock effectively.

[Purpose of the invention]

SUMMARY OF THE INVENTION An object of the present invention is to provide a method for easily repairing the bottom of a ship without removing most of the various sacrificial equipment and equipment, which is a drawback of the conventional ship repair methods.

The structure of the present invention to achieve the above-mentioned object is to cut the bottom of a damaged ship hull into a tunnel shape and carry it out, and then carry the bottom part manufactured at another place into this carried out part and weld it to the ship hull. This is a ship repair method characterized by:

〔Example〕

Next, the present invention will be described in detail with reference to the drawings.

First Step The first step is to remove the damaged bottom of the ship.

As shown in FIG. 1, a hull 2 of a repair ship is docked in a dock 1. The hull 2 is supported by a board 3, and a truck 4 is located below the bottom 2A of the ship, and the truck 4 is guided by rails 5 so that the two people can be easily transported from the bottom.

Moreover, in order to eliminate the risk of the hull 2 further deforming or collapsing when the hull bottom 2A is removed, a temporary support 20 is erected inside the ship as necessary.

As shown in FIG. 2, the ship bottom block 2A is cut to an appropriate length, and the cut ship bottom block 2B is carried out using a trolley 4.

As can be seen with reference to Figures 1 and 2, the bottom part 2A
is cut into a tunnel shape, leaving the ship's side part 2S supported by the board 3, and is carried out by the cart 4.

As mentioned above, since the hull 2 has the bottom side 2S supported by the board 3 and cut into a tunnel shape,
The cut ship bottom block 2B can be easily carried out using the space between the blocks 3.

Second Step The second step is a process of correcting the deformation of the center part of the hull.

If the hull 2 is deformed into a “F” shape, the bottom 2
After removing A, the ship side part 6 shown in FIG. 2 is cut, and after the deformation of the hull 2 is corrected, the cut parts are welded again.

In addition, when the hull 2 is deformed into an F-shape, it is possible to correct the hull 2 by using its own weight at the time when the hull side part 6 is cut.

Third Step The third step is the process of attaching the newly manufactured bottom of the ship to the tunnel-shaped portion that was removed.

In the first step, the ship bottom 2A was cut into ship bottom blocks 2B, and these blocks were carried out by the trolley 4 located on the ship bottom 2A. The bottom block 2C is carried into the bottom of the hull 2 and welded as shown in FIG. The bottom of the ship has now been replaced with a new bottom.

14th Step A The fourth step is the process of replacing bent parts of the cargo hold bilge structure and engine room bottom structure.

As shown in Figures 4 and 5, cargo hold bilge structure 2D
The cargo hold bilge structure 2D' is cut, carried out laterally of the ship body 2 by the lateral movable trolley 4A, and replaced with a new cargo hold bilge structure 2D', which is then fixed at a predetermined location.

Additionally, as shown in Figures 6 and 7, the engine room bottom structure 2E and stern frame 2F are carried out, and the new engine room bottom structure 2E' and stern frame 2F' are brought in and fixed in place. .

The fifth step of the fifth lambda step is the replacement of the bow bottom structure and the replacement and restoration process of the rudder and shaft system equipment.

In the first step, the bow bottom structure is removed, but a new bow bottom structure 2 is added as shown in Figure 8.
G and 2H are transported to a predetermined position using carts 4 and 4A and fixed.

By passing through the steps from the first step to the fifth step, the two damaged ship bottoms are replaced with a new ship bottom.

〔Effect of the invention〕

The present invention involves removing the ship bottom in a tunnel shape while supporting the ship's side part of the ship's bottom without removing most of the devices and various equipment woven on the ship's hull, and then creating a new ship bottom again. It is unique in that the repair process progresses as if it were installed.

That is, the bottom part 2A of the damaged hull 2 is cut and removed from the bottom side part 2S in the form of a block, and this is carried out in the form of a block, and the newly manufactured bottom part 2C is carried into the bottom part and placed in a predetermined position. The feature is that it is fixed.

The present invention, which employs the steps described above, can have the following effects.

(1) Repair work can be carried out without removing the hatch cover, deck crane, and other navigational equipment on the deck.

(2) Since the bottom of the ship is not manufactured on-site to fit the repaired ship, the process is leveled out, making it possible to significantly shorten the construction period and reduce costs.

(3) Repair work can be carried out even if the space between the bottom of the ship and the dock is narrow.

(4) It becomes easy to correct so-called hogging, where the hull is deformed into a "F" shape.

(5) Block weaving and block painting can be used in the same conditions as in new ships.

(6) As the construction period is shortened, the dock can be used more effectively.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a cross-sectional view showing a state in which the bottom of a ship being repaired is cut and removed, and FIG. 2 is a similar side view. FIG. 3 is a side view showing a state in which a newly manufactured boat bottom is being carried into a fixed position on the boat bottom. FIGS. 4 and 5 are a cross-sectional view and a perspective view showing the cargo compartment bilge structure being cut and carried out. 6 and 7 are side views showing the situation where the stern section is being repaired. FIG. 8 is a perspective view showing a situation in which the bow section is replaced with a new bow section. ■...Dock, 2...Repaired ship, hull, 2A...Damaged ship bottom, 2B...Newly manufactured bottom block, 3...Bollywood, 4...Dolly. Agent: Patent Attorney Makoto Ogawa − Patent Attorney: Ken Noguchi Patent Attorney: Kazuhiko Saishita

Claims (1)

[Claims] The bottom of the damaged hull was cut into a tunnel and transported.
A method for repairing a ship, characterized in that a ship bottom manufactured at another location is brought into the removed part and welded to the ship's hull.