JPS60240589A - Method of replacing main engine of ship - Google Patents

Abstract

PURPOSE:To simply replace the main engine of a ship, by cutting off the main part of an engine room containing the main engine of the ship having the engine room under a living quarter, by putting the cut-off part aside, and fitting a new engine room main part prepared beforehand and containing a new main engine, sidewards into the ship, and by securing the fitted new main part therein. CONSTITUTION:When the main engine 13 of a ship having a living quarter 11 on the deck of its hull and an engine room 12 under the living quarter is to be replaced, the main part 14 of the engine room, which contains the main engine, is cut off from the hull and put aside so that the living quarter 11 and the upper part 12a of the engine room are left as reinforcements for the work of the replacement. A new main part 16 prepared beforehand and containing a new main engine 15 is fitted sidewards into the hull and secured therein. According to this method, the replaced portions of the ship are minimized and the work of the replacement is simplified.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a method for retrofitting the main engine of a ship having an engine room below the accommodation structure.

[Conventional technology]

Conventionally, when carrying out work to replace the main engine of a ship with a living quarters structure above the engine room, the fourth
As shown in the figure, main engine stand, new main engine, 8! A new hull part 1 is prepared in advance, which includes a living quarter structure above an open engine room 9 and various types of armoring.

Then, the ship undergoing main engine replacement work is docked, and the hull section 2, which includes the engine room including the main engine and the living quarters structure, is separated from the front hull 3a and the rear hull 3b, and then placed in the dock. Inject water into these hull parts 2. Hull front part 3a
+ and the rear part of the hull 3b are floated, and the newly built hull part 1 and the hull part 2 are replaced.

Next, again the hull part 1. Hull front part 3a and hull rear part 3
The main engine replacement work was completed by bringing the two into the dock and joining them together.

[Problem that the invention seeks to solve]

However, in the conventional main engine replacement work method as described above, there is a living quarters structure above the engine room where the main engine is installed, and the hull section 1 that includes not only the engine room but also the living quarters structure is newly constructed. There is a problem in that the scope of the modification work becomes wider and the hull work and weaving work become large.

In addition, the weight of the newly built hull section 1 increases, and when replacing the newly built hull section 1 with the hull section 2, work such as loading and unloading the hull sections 1 and 2 is complicated.
Since reinforcement work is required for these works, there are also problems in that the construction period becomes long and the amount of work becomes large.

The present invention aims to solve these problems, and when replacing the main engine of a ship, it eliminates the need for complicated docking and docking work for cutting, joining, and replacing the ship's hull, and eliminates the need for the ship's hull parts to be replaced. The purpose of this invention is to provide a method for replacing the main engine of a ship, which reduces the amount of work required.

[Means for solving problems]

For this reason, the ship main engine replacement method of the present invention provides the above-mentioned method for replacing the main engine of a ship that has a living quarters structure on the upper deck of the hull and an engine room below the living quarters structure. The main part of the engine room, including the main engine, was cut from the hull and removed to the side, leaving the living quarters structure and the upper part of the engine room as structural members for reinforcement during construction. The main part of the newly built engine room, including the new main engine, is fitted into the hull from the side and fixed.

[Effect]

According to the ship main engine replacement method of the present invention described above, only the main part of the engine room including the main engine is replaced with a newly built main part of the engine room, which reduces the weight of the replaced part of the ship and eliminates complicated docking and docking. This eliminates the need for such work, making it easier to replace the main engine.

〔Example〕

Hereinafter, a method for replacing the main engine of a ship as an embodiment of the present invention will be explained with reference to the drawings. Fig. 1 is a plan view for explaining the method, Fig. 2 is a side view thereof, and Fig. 3 is a
It is a sectional view taken along the line Bm in the figure.

As shown in FIGS. 1 to 3, in a ship that has a living quarters structure 11 on the upper deck of a hull 10 and an engine room 12 below this living quarters structure 11, the main engine 13 in the engine room 12 is When performing retrofitting work, the hull 10 is docked and installed in a dock 20.

Lf/house 1 base structure 11 and engine room 12'' upper sound G 1
The main part 14 of the engine room including the main engine 13 is cut from the hull 10 so that the main part 14 of the engine room including the main engine 13 is left in place as structural members for reinforcement during construction.

After this, the main part 14 of the engine room is removed from the side part 12b of the engine room.
Pull it out to the opposite side of the ship, move it toward the bow, and remove it.

Next, the main part 1 of the engine room prepared in advance in the dock 20
Newly built engine room main part 16 including new main engine 15 suitable for 4.
, the hull 10 is placed in the position where the engine room main part 14 of the hull 10 is removed.
Insert and secure from the side.

After joining the newly built engine room main part 16, the hull 10
and the removed main part 14 of the engine room are floated and discharged,
Necessary adjustment work is performed on the hull 10, and the main engine replacement and construction work is completed.

By the above construction method, after the main part 14 of the engine room is removed, the upper part 12a and side part 121 of the engine room 12 left in the hull 10 support the accommodation structure 11 above them, and Upper part 12a, side part 12b
The accommodation structure 11 acts as a reinforcing structural member, and the structural strength of the hull 10 is ensured during construction.

In addition, since the hull part to be removed does not include the living quarters structure 11 and only the main engine room part 14, its weight is light, and the work of removing the main engine room part 14 and fitting the newly built main part 16 of the engine room is easy. This can be easily carried out inside the ship, and there is no need to carry out work such as entering and exiting the hull 10, 1f1 engine room main room main 14 and newly built engine room main section 16, as was done in the past.

Note that reinforcement work may be performed on the upper part 12a1 of the engine room, the side part 12b of the engine room, etc., if necessary.

〔Effect of the invention〕

As detailed above, according to the ship main engine replacement method of the present invention, a living quarters structure is provided on the upper deck of the ship, and
Regarding ships with an engine room below the accommodation structure,
When carrying out construction work to replace the main engine, the main part of the engine room, including the main engine, was cut off from the ship's hull and the main part of the engine room, including the main engine, was cut off from the hull, while the above living quarters structure and the upper part of the engine room were left as structural members for reinforcement during construction. The main parts of the newly built engine room, including the new engine prepared in advance, are then fitted and fixed into the hull from the side, which minimizes the number of replacement parts necessary to replace the main engine. Since it can be easily replaced on the bottom of the beam, the complicated work of entering and exiting chestnuts is not necessary, the amount of work can be reduced, and the construction period can be significantly shortened.

[Brief explanation of the drawing]

Figures 1 to 3 show a method for replacing the main engine of a ship as an embodiment of the present invention. Figure 1 is a plan view for explaining the method, Figure 2 is a side view, and Figure 3 is a side view. ■−■ in Figure 1
FIG. 4 is a side view schematically showing a conventional ship main engine replacement method. 10...hull, 11...accommodation structure, 12...engine room,
12a... Upper part of the engine room, 12b... Side part of the engine room, 13... Main engine, 14... Main part of the engine room, 15... New engine, 16... Main part of the newly built engine room, 20... dock. Sub-Agent Patent Attorney Yoshihiko Iinuma Figure 3 11 Figure 4

Claims (1)

[Claims] When carrying out work to replace the main engine of a ship that has a living quarters structure on the upper deck of the hull and an engine room below the living quarters structure, it is necessary to replace the above living quarters structure and the upper part of the engine room. The main part of the engine room containing the main engine was cut from the hull and removed to the side, leaving it as a reinforcing structural material during construction, and then the main part of the newly built engine room containing the new main engine prepared in advance was removed. A method for replacing the main engine of a ship, characterized by fitting and fixing it into the ship's hull from the side.