JPS6148468B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for constructing a hull block, and in particular, to a method for building a hull block, on a working surface plate, the hull block assembled when constructing the hull block is moved up and down to an arbitrary height from the surface plate. The present invention relates to a method for efficiently and mass-producing ship blocks by forming a work space and welding them together using automatic welding equipment from this work space.

In recent years, industrial robots and the like have been introduced in various manufacturing industries to improve manufacturing processes, and labor-saving or unmanned processes are being promoted. In the shipbuilding industry, in order to follow this trend, welding work, etc.
The introduction of industrial robots, etc. is a concern.

In general, to build a hull block, the main steps are:
A framework method or a longitudinal attachment method is adopted.

For example, in the framework method, first, transformer members arranged in parallel at a predetermined interval and longitudinal members arranged in parallel at a predetermined interval at right angles to these are combined and welded together to form a framework. . This framework is installed along the outer skin of the hull to maintain the strength of the hull. On the other hand, the skin plate material that forms the hull outer plate is made of 3 to 4 flat plates, etc.
Formed by seam welding together. The hull block is constructed by placing this skin plate material in advance on a work surface plate, then transferring the framework, placing it on the skin plate material, and welding them together.

In this way, gravity welding, which is a type of shielded arc welding, has been widely used in the construction of hull blocks. This welding work requires manpower, and in particular when welding the skin plate and the frame, the total weld length is very long, so many welders each operate a number of gravity welding machines. The work was simple and required repeatability. In addition, in the working environment in which this welding work is performed, the framework is set up on top of the skin plate material, so the work space is divided by the framework, and in order for the welder to proceed with the work, there are This was extremely dangerous as the work had to be done while climbing over the longitudinal members and the like.

In view of this situation, automatic welding machines for horizontal fillet welding have been introduced in recent years. However, since the welding work space is divided by the framework as in the past, welding work can only be carried out intermittently and is not very effective. Furthermore, in order to transport this automatic welding machine, a person had to hold it and move it over the framework, making it impossible to avoid danger. In order to cope with this, a portal crane, etc. is installed on the work surface plate where the hull blocks are constructed, and a handling device that holds the automatic welding machine is installed on this, and the welding machine is suspended by these and transported on the frame. However, in order to reliably install the welding machine at the weld joint, a large and complicated handling device is required. Additionally, even if it is desired to install multiple automatic welding machines on a hull block in order to improve process efficiency, the structure of the hull block limits the weight of the welding machines, making it impossible to place enough welding machines. At the same time, there have been many problems such as interference between handling devices that transport the welding machine, which makes it impossible to operate the welding machine smoothly.

In short, in the conventional method of building hull blocks, the work space was set up so as to straddle the framework installed on the skin plate material from above, so this work space was divided by the framework and subdivided into individual parts. It had been. Therefore, the welding machine cannot operate freely within such a limited work space, making it impossible to perform smooth and quick welding work. In addition, in such a work environment, it is difficult to practically use automatic welding equipment such as industrial robots, which poses a major problem in implementing labor-saving or unmanned processes.

The present invention was devised in view of the problems of conventional hull block construction methods and to effectively solve these problems.

An object of the present invention is to be able to form a working space between a working surface plate and the assembled hull block when building a hull block, and to be able to perform smooth welding work using an automatic welding device within this space. The object of the present invention is to provide a method of constructing a hull block that can achieve as much labor saving or unmanning as possible in the process.

Next, an example of an apparatus for specifically carrying out the method of constructing a hull block according to the present invention will be explained.

As shown in FIG. 1, this apparatus 1 is provided with a passage 3 which is open at the top and is used for assembly line work in order to construct a hull block 2. This passage 3
In this figure, a framework forming part 7 which forms a framework 6 by the transformer member 4 and the longitudinal member 5, and a hull block forming part 9 which forms the hull block 2 by this framework 6 and the skin plate material 8 are approximately L-shaped. The passageway 3 is constructed so that a series of assembly line operations for constructing the hull block 2 can be carried out within the passageway 3. A work surface plate 10 is formed on the bottom surface of the passage 3 over the entire area of the passage 3. On the work surface plate 10, two or more lanes of rails 11, 11 are arranged in parallel at a predetermined interval along the passage 3 over the entire area of the surface plate 10. On these rails 11, 11, there are a plurality of carts 1, respectively.
2 is provided so as to be freely movable, and is configured to be run for each process according to the assembly line work. These carts 12 are equipped with lifting means 13 for supporting the transformer member 4 and the like. This elevating means 13 is configured to support the transformer member 4 and the like and to form a work space 14 between it and the work surface plate 10. Therefore, these carts 12 support the transformer member 4 and the like while supporting the surface plate 1.
A work space 14 is formed above the vehicle 0, and the vehicle is configured to travel along the assembly line.

At the most upstream side of the framework forming portion 7 of the passage 3, an area A is formed in which the transformer member 4 is supported by the lifting means 13 of the trolley 12. In this area A, a plurality of carts 12 are arranged on parallel rails 11, 11 at predetermined intervals.
These trolleys 12 have different rails 11, 1
It is configured to be parallel to the trolley 12 on the top. Therefore, the transformer member 4 is spanned across the passage 3, supported horizontally by the lifting means 13 of the cart 12 on different rails 11, 11, and arranged side by side at a predetermined interval. is configured to be In particular, the transformer member 4 is supported on the truck 12 so that the surface 15 in contact with the skin plate 8 faces upward.

On the downstream side of this area A, an area B is formed in which a longitudinal member 5 is installed to span a transformer member 4 supported by a trolley 12 to form a framework 6. In this area B, a longitudinal member storage area 16 located outward along the passage 3 is provided. In this longitudinal member storage place 16, a longitudinal member 5 is placed to be combined with the transformer member 4 to form a framework 6. A conveying means 17 is provided above the longitudinal member storage area 16 and the passageway 3, extending across them. This conveying means 17 carries out the longitudinal member 5 from the longitudinal member storage 16, and as shown in FIG. , so that they can be inserted and installed at predetermined intervals. Therefore, by combining these longitudinal members 5 and transformer members 4, a framework 6 is formed. Further, these longitudinal members 5 are inserted so that the surface 18 in contact with the skin plate material 8 faces upward, and the welding surface 19 of the framework 6 faces upward.

On the downstream side of this area B, an area D is formed in which the transformer member 4 and the longitudinal member 5, which are supported by the truck 12 and form the framework 6, are welded to each other. In this area D, an automatic welding device 20 identical to that shown in FIG. 4 is installed in the passageway 3. Particularly, this automatic welding device 20 has a framework 6 supported in the air by a lifting means 13 of a truck 12.
It is provided so as to be freely movable within a work space 14 formed between the trolley 12 and the work surface plate 10 on which the trolley 12 travels. This automatic welding device 20 has a welding machine part 21 that can be raised and lowered, rotated, and raised and lowered freely, and is made to face the welding joint between the transformer member 4 and the longitudinal member 5 by remote control or automatic control, and automatically It is constructed to be able to perform welding work. Therefore, this automatic welding device 20 can freely move within the work space 14 formed on the surface plate 10 while
It is constructed to be able to perform welding work.

On the downstream side of this area D, an area E is formed which is connected to the most downstream side of the framework forming part 7 and the most upstream side of the hull block forming part 9. The section 7 is connected in series to the hull block forming section 9. This area E
Here, the framework 6 supported by the truck 12 is placed on standby for transfer to the hull block forming section 9.

On the other hand, in order to manufacture the skin plate material 8 constituting the hull block 2 along the framework forming part 7 of the passage 3,
A place 23, which is the skin plate manufacturing section 22 where assembly line work is performed, is formed, and the work is configured to be carried out in synchronization with the assembly line operation of the framework forming section 7. At the most upstream side of this location 23, there is a flat plate material 24 that is attached to the hull block 2 and forms the hull skin plate material, etc.
An area F is formed in which the objects etc. are arranged side by side. In particular, these flat plates 24 and the like are configured so that the welding surface 25 to the framework 6 formed by the framework forming section 7 faces downward.

On the downstream side of this area F, an area G is formed in which the skin plate material 8 is formed by seam welding the parallel plate materials 24 and the like. A welding machine (not shown) or the like is disposed in this area G, and is configured to seam-weld the flat plate materials 24 and the like to each other to form the skin plate material 8.

On the downstream side of this area G, the skin plate material 8 is cut,
Alternatively, an area H for rotation is formed. In this area H, skin board material 8 is placed along this area.
A turning table 26 is provided for rotating the. This turning table 26
, the skin board material 8 is assembled into a framework 6 formed by the framework forming section 7.
It is configured to rotate so as to match the mounting direction. Further, in this area H, a cutting device (not shown) for cutting the skin board material 8 is provided, and in order to make the skin board material 8 correspond to the dimensions of the framework 6.
is configured to cut.

The downstream side of this area H, that is, the skin board manufacturing department 22
A hull block forming portion 9 formed in the passage 3 is connected to the extending side of the passage. Therefore, passage 3
On the most upstream side of the hull block forming section 9 which is connected to the area E on the most downstream side of the framework forming section 7, there are a framework 6 transferred from the framework forming section 7 and a skin plate manufacturing section 22.
An area J is formed in which the skin plate material 8 transferred from the base is combined. Inside the passage 3 of this area J, skin board material 8 carried in from the skin board manufacturing department 22
A roller 27 is provided which can be moved up and down for placing the on the frame 6. A large number of rollers 27 are provided so as to be positioned in gaps between the frameworks 6 being transferred from the framework forming section 7. Therefore, this roller 27
is the skin board material 8 carried out from the skin board manufacturing department 22
is transferred onto the framework 6 waiting in the passage 3, and the rollers 27 are gradually lowered so that the skin board material 8 transferred by the rollers 27 is placed on the framework 6 and supported. It is composed of In this way, as shown in FIG. 3, the hull block 2 is formed by placing the skin plate material 8 on the framework 6 supported on the truck 12.

On the downstream side of this area J, an area K is formed in which the framework 6 and skin plate material 8 forming the hull block 2 are welded together. In this area K,
As shown in FIG. 4, an automatic welding device 20 is disposed within the passageway 3. Therefore, the framework 6 and the skin plate material 8 are configured to be welded together using the same configuration as described in the area D where the longitudinal member 5 and the transformer member 4 are welded together.

On the downstream side of this area K, an area L is formed for carrying out the constructed hull block 2. In this area L, a hull block storage area 2 is located outside the passage 3, and on the extension side of this passage 3.
8 is provided. This hull block storage area 28
The constructed hull block 2 is placed on standby to be installed on the hull. A carrying-out means 29 is provided above the hull block storage area 28 and the passageway 3, extending along them. This carrying out means 29 is carried out from inside the passage 3 to the hull block 2.
It is set up to carry out. Further, this unloading means 29 is equipped with a reversing means 30 for reversing the hull block 2, and is configured to be able to reverse the hull block 2 depending on the part of the hull on which the hull block 2 is mounted. There is.

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

The hull block 2 is a passage 3 where assembly line work is carried out.
They are formed and built in sequence. First, aisle 3
In the inner framework forming section 7, the transformer member 4 and the longitudinal member 5 are joined to form a framework 6. On the other hand, in parallel with this, the skin board manufacturing department 2 outside the passage 3
2, the skin plate material 8 is manufactured. Thereafter, the framework 6 and the skin plate material 8 are transferred to the hull block forming part 9 in the passage 3, and the hull block forming part 9 is transferred to the hull block forming part 9.
Then, hull block 2 will be constructed.

To explain in more detail, first, the framework forming part 7 of the passage 3
The work surface plate 10 of area A is formed on the most upstream side of
A plurality of carts 12 are arranged on the top, and these carts 12
The transformer members 4 are arranged side by side at a predetermined interval on the elevating means 13 provided in the apparatus. In particular, in this case, the surface 1 of the transformer member 4 in contact with the skin plate material 8
5 is installed on the elevating means 13 so as to face upward, and the elevating means 13 forms a work space 14 between the transformer member 4 and the work surface plate 10. In addition, the rails 11 and 1 on the work surface plate 10
Thereafter, the carts 12 traveling on the cart 12 move within the passage 3 while maintaining the mutual positional relationship and the work space 14, and travel and stop for each process of assembly work.

Next, the transformer members 4 supported on these carts 12 are combined with the longitudinal members 5 to form a framework 6.
The trolley 12 is moved to area B to form the area. At this time, the longitudinal member 5 is transferred from the longitudinal member storage area 16 using the conveying means 17, and the longitudinal member 5 is placed in the passage 3 in the installation direction of the transformer members 4 arranged in parallel at a predetermined interval. A framework 6 is formed by arranging them in parallel at right angles at a predetermined interval.
At this time, the longitudinal member 5 is installed with its surface 18 in contact with the skin plate material 8 facing upward, and the welding surface 19 of the entire framework 6 with the skin plate material 8 is formed so as to face upward.

Thereafter, the framework 6 is supported on these carts 12.
The transformer member 4 and the longitudinal member 5 that constitute the
The cart 12 is moved to area C in order to weld and join each other. At this time, the elevating means 13 of the trolley 12
In the working space 14 in the passage 3 formed by,
The automatic welding devices 20 are moved and deployed, and the welding machine sections 21 provided in these automatic welding devices 20 are made to perform welding work to integrate the framework 6.

In this way, the framework 6 formed in the framework forming section 7 is transferred to the hull block forming section 9 via the area E by the trolley 11.

On the other hand, the skin plate manufacturing department 22 provided outside the passage 3
Now, in parallel with the assembly line work of the framework forming section 7, the skin board material 8 is manufactured. First, the skin plate material 24 and the like that form the skin plate material 8 are installed in the area F on the most upstream side of the skin plate manufacturing section 22. At this time, the skin plate material 24 and the like are installed with the welding surface 25 to the framework 6 facing downward.

Next, these flat plates 24 and the like are welded together and transported to area G to form the skin plate 8. At this time, the flat plates 24 and the like are seam-welded and joined together using a welding machine (not shown) or the like.

Thereafter, the formed skin plate material 8 is transferred to area H to be turned or cut in order to correspond to the mounting direction and dimensions of the framework 6. In this case,
The skin plate material 8 is turned or cut by a turning table 26 or a cutting device (not shown).

In this way, the skin plate material 8 manufactured in the skin plate material manufacturing section 22 is transferred to the hull block forming section 9 formed in the passage 3.

The skin plate material 8 manufactured as described above and the framework 6 formed in the framework forming section 7 are transferred to the area J on the most upstream side of the hull block forming section 9 in the passage 3.

First, the framework 6 is transferred from the framework forming section 7 to the area J by the trolley 12. Next, the skin board material 8 is transferred to area J from the skin board material manufacturing department 22. At this time, the roller 27 provided in the passage 3 is raised above the framework 6 to support the skin plate material 8 while being transferred above the framework 6. Thereafter, the roller 27 is gradually lowered to place the skin plate material 8 on the framework 6. In this way, as shown in Figure 3,
The frame 6 and the skin plate material 8 are combined, and the hull block 2 is formed such that their welded joints face into the working space 14.

Next, the truck 12 is moved to area K in order to weld together the frame 6 and the skin plate 8 supported on the truck 12 and forming the hull block 2. As shown in FIG. 4, lifting means 13 for the trolley 12
In the working space 14 in the passage 3 formed by,
Automatic welding devices 20 are provided, and the welding machine parts 21 of these automatic welding devices 20 are made to perform welding work,
Integrate the hull block 2.

Finally, in order to transport the hull block 2 built in the passageway 3 and supported on the carriage 12 to the hull block storage area 28 outside the passageway 3, the carriage 12 is moved to the area L.
move. At this time, the hull block 2 is transported from the passageway 3 to the hull block storage area 28 by the transport means 29. By the way, this unloading means 29 is provided with a reversing means 30 for reversing the hull block 2.
The hull block 2 will be inverted and carried out depending on the part of the hull where it will be loaded.

In this way, the hull block 2 is constructed. In particular, the transformer member 4, the longitudinal member 5, and the skin plate material 8 that constitute the hull block 2 are supported in the air by the lifting means 13 of the bogie 12.
Since the welded joints of the two are exposed to a continuous working space 14 formed on the working surface plate 10, automatic welding equipment 20 etc. can be installed arbitrarily within the space 14, and welding can be carried out freely. By installing an operable industrial robot or the like in this space 14,
It is possible to achieve labor saving or unmanned processes in the process.

In summary, the present invention provides the following excellent effects.

(1) A continuous work space can be formed between the hull block to be assembled and the work surface plate, and automatic welding equipment etc. can be installed arbitrarily within this space and can be operated freely, smoothly and quickly. Can perform construction work on hull blocks.

(2) Industrial robots, etc. can be arbitrarily deployed in a continuous work space, making it possible to achieve labor saving or unmanned processes.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an example of a device for concretely carrying out the present invention, FIG. 2 is a perspective view showing the state of formation of the framework of the construction method according to the present invention, and FIG.
Perspective view showing the state of formation of the hull block, No. 4
The figure is a side sectional view showing the state of welding the framework and skin plate material. In the figure, 2 is a hull block, 4 is a transformer member,
5 is a longitudinal member, 8 is a skin plate material, 10 is a work surface plate,
12 is a trolley, 13 is a lifting means, 14 is a work space,
20 is an automatic welding device.

Claims (1)

[Claims] 1. Longitudinal members are spanned over the transformer members, skin plates are welded onto these members, and when building a hull block, the transformer is mounted on a trolley that runs on a working surface plate and has a lifting means. Support the member with the surface in contact with the skin plate material facing upward, and span the longitudinal member with the surface in contact with the skin plate material of the longitudinal member facing upward so that the surface in contact with the skin plate material of the longitudinal member is on the same surface as the surface in contact with the skin plate material of the transformer member. After placing the skin board material on the surface in contact with the skin board material formed by the transformer member and the longitudinal member, a predetermined work space is formed from above the work surface plate by the above-mentioned elevating means, and a predetermined work space is formed within the work space. 1. A method of constructing a hull block, characterized in that the hull block is constructed by running an automatic welding device to weld the transformer member, longitudinal member, and skin plate material to join each other.