JPS60176884A - Construction method of hull - Google Patents

Abstract

PURPOSE:To maintain work environment in good conditions by loading side and upper deck blocks except a ship's bottom block on a dock floor through an installation stand that forms preset work space, completing the joining work, and delivering and welding the ship's bottom block. CONSTITUTION:An installation stand 2 that forms preset work space S is arranged on a dock floor 1 and side blocks 3 and 4, upper deck block 13, etc. are loaded on the stand except a ship's bottom block. Various materials are delivered through the work space S on the installation stand at the bottom. Besides, ample air ventilation and light distribution can be obtained from the opening and the welding work of each block is performed except the ship's bottom block. The ship's block is delivered and welded through the work space S. Inboard work can be performed by widely opening the hull bottom and work environment can be kept in good conditions.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention 1] The present invention relates to a method for constructing a ship, and in particular, after the blocks of each part of the ship except for the bottom block are placed in advance at a predetermined height position on a work floor, the work on the work floor is carried out. The present invention relates to a hull construction method in which the skeletal structure of the bottom block and the bottom shell plate are installed separately and sequentially from the space.

``Technical Background of the Invention Problem 1: The general method of building a ship's hull is the ``T method''.

In the conventional construction method, the bottom of the ship is first layered.
The ship's sides, upper deck, etc. are manufactured by dividing them into blocks of a size according to the crane capacity, etc., and these blocks are loaded with blocks, etc. that are placed sequentially above the ship's bottom block at the dock or slipway. And finally, the deck blocks are mounted and the hull is constructed.

By the way, the conventional method of constructing the earth part sequentially from the bottom of the hull as shown below had the following problems.

■ When each block is installed, only temporary welding is done, and after all blocks are installed, the main welding of each aggregate and outer panel member is performed inside the nearly sealed hull, so heat from the welding process and combustion gas such as solvent BP is easy to get on the hull and the working environment is good 2? It turned down.

■ In addition, construction materials and materials for scaffolding for high-altitude work are required to carry out various tasks inside the ship.
i) J, etc. had to be carried in by hanging them from above the hull; this work was both complicated and dangerous. In addition, transporting work equipment inside the ship had to be carried out manually, which required heavy labor.

■ Chips, slag, etc. generated from various operations fell and accumulated on the blocked bottom of the ship, making removal work difficult.

− In order to deal with the work situation related to the above, common equipment was installed inside the hull for ventilation, and instead of constructing scaffolding, movable scaffolding equipment was installed inside the hull, and various work equipment was installed on it. Efforts have been made to improve the work environment, but the former requires loading and unloading work, and the latter requires moving scaffolding equipment inside the ship. If possible, cut out the transverse bulkhead for rail construction, etc., and carry out extra work such as work and restoration work. It could not be said to be self-effective as it required a lot of effort.

[Objective of the Invention] The present invention was devised in view of the problems mentioned in No. 1 above, and the object of A is to provide a hull construction method that can improve the working environment and increase work efficiency. be.

[Summary of the Invention] According to the present invention, the above object is achieved as follows.

In other words, on the work floor, 8Ω is installed to form a predetermined work space, and the ship's side blocks, upper deck blocks, etc., excluding the bottom block, are placed on the work platform (IJ).
Next, from the working space marked F, assemble the skeleton structure of the cock between the blocks, and then remove the bottom shell from the working space to begin building the hull. It is something.

[Embodiments of the Invention] Next, a device for covering an actual IM of the present invention will be specifically described.

As shown in Fig. 1, reference numeral 1 denotes a working floor formed by the flat bottom of a dock or a ship's platform. will be placed.

The mounting fittings 2 that support the vertical bulkhead block 3 constituting the center part of the hull are formed to have a substantially rectangular cross section, and the mounting fittings 2 that support the ship side shell blocks 4 such as shipside blocks are curved bilges. It is formed with a cross-sectional shape that matches the shape of the ship's side shell section perpendicular to the section. These mounting units 2... horizontally support each block 3.4 at a predetermined height position on the work floor 1 while maintaining a predetermined distance between them. It is configured to form a predetermined work space S between the two.

As shown in FIG. 2, FIG. 4, or FIG. 5, work carts 5 and 6 are disposed in the work space S thus formed so as to be movable on the work floor 1.

As shown in FIG. 2 or 5, the work cart 5 is equipped with a lifting mechanism 7 such as a jack. The work trolley 5 is used to transport materials for constructing scaffolding and work equipment into and out of the hull, and is also constructed by connecting transformer materials 8, longitudinal materials 9, etc. in a parallel grid shape as shown in Fig. 3. The frame N'I structure 10 of the bottom block shown in FIG. The illustrated work trolley 6 is equipped with working equipment such as a welding machine 12 and a gas cutting machine.In the illustrated example, the welding machine 12 is shown which can be raised, lowered, and raised, but the work equipment is consolidated. It may also be a work cart equipped with a work robot or the like.

These work carts 5 and 6 are equipped with traveling means such as wheels, and are configured to freely travel within the work space S and perform work inside the hull from the work space S side below the hull.

The construction method of the present invention will be described in more detail based on the above-mentioned specific example of the device.

As shown in FIG. 1, first, the fixtures 2 are arranged on the work floor 1 at predetermined intervals, and a predetermined work space S is formed on the work floor 1 between these fixtures 2. .

Next, the hull side shell blocks 4., excluding the bottom block, are attached to these installation fittings 2-L. A vertical bulkhead block 3, an upper shell 6 and a plate block 13 are mounted and supported for 1J. During this work, the pre-constructed ship side outer plating block [I-tsuk 4] and the vertical bulkhead block 3 are each loaded onto the collapsible platform 2 using a crane, etc., and these parts are temporarily connected, and then the pre-constructed upper deck The block 13 is mounted between blocks 3 and 4 using a crane or the like and temporarily connected.

Remove the bottom blocks (each block 3,
4.13 has been installed and constructed, the work trolley 5 can be moved freely into the work space S at the bottom of the ship which is wide open. Then, various materials are stored inside the hull through the elevating mechanism 7, etc.
Bring in equipment.

By the way, in the present invention, it is possible to carry in various materials with a low lifting height by using the work cart 5 from below the hull, which is largely open. Therefore, unlike the conventional method, the loading work can be carried in from the upper deck side with a high lifting height using a crane or the like. There is no need to do this, and the loading work can be accomplished easily and quickly.

Furthermore, since the lifting height can be lowered, work safety can be significantly improved. Furthermore, the work cart 5 can be moved freely within the work space S, stopped at any position, and materials, etc. can be brought in from the position closest to the work area, so manual movement of materials, etc. can be eliminated as much as possible, reducing labor. can be achieved.

Next, the pre-assembled ship bottom block frame structure 10 (Fig. 3) is mounted on the lifting mechanism 7 of the work trolley 5, and the work floor 1
Assembling (transferring to the lower position) the underside of the hull while avoiding traveling to the lower part of the ship.Next, as shown in Fig. 2, the elevating mechanism 7 is raised and lowered to raise the osseous structure 10 between the blocks 3 and 4, and the worker temporarily connects it. administer.

Once the skeletal structure 10 of the bottom block has been installed as described above, various operations such as main welding operations are carried out inside the hull. At this time, the inside of the hull is widely open to the work space S side through the frame structure 10, so it is easy to use! l Ventilation is carried out naturally and smoothly, which can greatly improve the working environment.

In addition, chips, slag, etc. generated during work can be dropped directly onto the work floor 1, making it extremely easy to clean the bottom of the ship after construction.

Furthermore, when performing various work such as welding inside the hull, 1)
By attaching the frame structure 10 that makes up the bottom of the ship in advance, it is possible to suppress deformation concentrated at the bottom of the ship when working with the bottom of the ship completely open. It is possible to appropriately construct the hull by suppressing the difficulty of the installation work of the aircraft.

By the way, for welding work on the frame structure 10 of the bottom of the ship, as shown in FIG. position and perform automatic welding etc. 1-.

In addition, in parallel with the works described in Section 2, similar work will be carried out on the longitudinally adjacent parts of the ship. Each block 3.4. ．． After the various operations such as main welding in step 13 are completed, the bottom shell plate 11 is then attached to the bottom of the ship from the work space S as shown in FIG. At this time, the bottom shell plate 11 (FIG. 6), which has been formed in advance in the form of a panel, is transported on the work trolley 5, raised and supported by the elevating mechanism 7, and the adjacent blocks 3.4 and frame structure 10 are moved. Weld and join. Similar work is performed on each adjacent hull section to construct the entire hull.

9- [Effects of the Invention 1 In summary, the present invention exhibits the following excellent effects.

(1) Work inside the ship can be carried out with the bottom of the hull left wide open, ensuring sufficient access and ventilation, significantly improving the working environment.

(2) When carrying out work inside the ship, the frame structure is assembled on the bottom of the ship in advance, which prevents deformation caused by various types of work from concentrating on the bottom of the ship, making it possible to properly install the bottom skin. can.

(3) Various materials and equipment can be carried into the hull from the work space formed on the work floor L at a low lifting height, improving work efficiency and increasing work safety.

(4) Therefore, it is possible to achieve a reduction in ship construction work (improving the environment, increasing work efficiency, improving safety, shortening the construction period as much as possible, and reducing construction costs).

10-

[Brief explanation of the drawing]

Fig. 1 is a front cross-sectional view of the hull showing the 1 = state in which each block except the bottom block has been mounted and built using the construction method according to the present invention, and Fig. 2 is the phrenology M of the bottom block by the work truck.
Figure 3 is a front sectional view of the hull showing the state of assembly of the 4-build, Figure 3 is a perspective view of the frame structure of the bottom block, and Figure 4 is an enlarged view of the main parts showing the state of welding the frame structure of the bottom block using a work trolley. FIG. 5 is a front sectional view of the hull showing how the bottom shell is attached by the work truck, and FIG. 6 is a perspective view of the bottom shell. In the figure, 1 is a work floor, 2 is an installation, 3, 4 degrees 13 is a block, 10 is a frame structure, 11 is a bottom shell, and S is a work space. Patent applicant: Ishikawajima-Harima Heavy Industries Co., Ltd.
Kinutani Nobuaki 11-Figure 1'' Figure 3

Claims (1)

[Claims] On the work floor, a set-up is arranged to form a predetermined work space, and the set-up [ship side blocks excluding the bottom block, upper deck block 1], etc. are placed and constructed on the set-up, and then,
A method for constructing a ship body, characterized in that the frame structure of the bottom block is assembled between the blocks from the work space, and then the bottom outer plate is installed from the work space to construct the ship body.