KR20070051147A - Large hull block manufacturing method using plural sphere carriers - Google Patents

Abstract

The present invention provides a manufacturing method of a large hull block using a plurality of sphere carriers, in particular a step of manufacturing a plurality of hull blocks using a land crane; Inserting a plurality of transporters into a plurality of carriers; Loading the plurality of hull blocks into the plurality of carriers and moving them to a secluded place; Removing the plurality of transporters and adjusting the level of the plurality of carriers; Combining the plurality of hull blocks onto the plurality of carriers to produce one large hull block; And moving the large hull block into the dock and seating on the bottom of the dock to provide a large hull block manufacturing method using a plurality of sphere carriers.

According to the present invention, it is difficult to transport the land, the large hull block that was produced only in the dock can be produced by moving to a secluded place on the land using a plurality of carriers, thereby maximizing the dock turn rate brings productivity.

Large hull blocks, multiple carriers, offshore cranes, docks

Description

Method of constructing large block by using Many-Way Carrier

1 is a perspective view showing the drying of a large hull block using a conventional dock.

Figure 2 is a flow chart for explaining an embodiment of a large hull block manufacturing method using a plurality of sphere carriers according to the present invention.

3A to 3F are exemplary diagrams for describing the exemplary embodiment shown in FIG. 2.

4 is a perspective view showing a two-prong carrier used in the embodiment shown in FIG.

5 is a flowchart illustrating a step of moving a large hull block to the inside of the dock and seating on the bottom of the dock when water is introduced into the dock during a large hull block manufacturing method using a plurality of sphere carriers according to the present invention. .

<Explanation of symbols for the main parts of the drawings>

100: PE workshop 102: PE work transport crane

120: dock 122: dock gate

124: Goliath crane 126: 3000 ton offshore crane

128: 3600 ton offshore crane 130: 2 ball carrier

140: Support 150: Transporter

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a construction method of a large hull block, and more particularly, to a construction method capable of manufacturing a large hull block in a secluded place on land using a plurality of carriers.

In general, the shipbuilding industry, which begins with the order of the ship and is designed, built, and delivered, the profitability of the business in the process depends on the survival and success of the industry.

An important factor in determining profitability is productivity in shipbuilding, and all shipbuilding industries are competing for the improvement of productivity.

For this reason, block drying has emerged. In the block drying method, first, the hull is divided into dozens or hundreds of blocks, and the individual blocks are assembled and manufactured on the ground, and the manufactured blocks are sequentially mounted on the shipboard and assembled into a hull.

Depending on the shape of the block, the finished block is painted with the most efficient process at the most suitable factory. Blocks that are finished until painting are combined by several blocks, and thus, the operation of combining a plurality of blocks into one is called a PE (Pre-Erection) operation.

The blood operation may be a plurality of small blocks in one large block, can be mounted at a time to reduce the time required to dry the ship, thereby increasing the production and work efficiency.

After the piercing operation, each hull block is moved to a dock, which is a facility built in a shipyard or a port to repair and build a ship, and is roughly divided into a dry dock and a floating dock.

A dry dock is a structure required for the construction of a ship. It is a workshop that can trap water into the sea using a dock gate and can also be taken out into the sea. It is a facility that can assemble and complete blocks to launch ships.

Floating dock is a ballast tank (Ballast Tank) inside the dock is a dock that can sink into the water when water is poured in it, and float on the water when draining water from the ballast tank.

1 is a perspective view showing the drying of a large hull block using a conventional dock. As shown in FIG. 1, the dock 10 is a dry dock, which cuts off a long "c" shaped groove 14 from the sea to the land 30, and at a point where the groove 14 meets the sea. The dock gate 12 is opened and closed to enable the inflow and outflow of seawater.

When the vessel 20 is repaired or dried, the dock 10 discharges the main water inside, closes the dock gate 12 to block the inflow of seawater, and when the vessel 20 is completed and launched There is an inflow of the drinking water by opening the lock (12).

Almost all cases such as large hull blocks of 3000 tonnes or more, which cannot be carried on land as well as ships, are built and manufactured in the dock.

For this reason, the dock is forced to accumulate work due to many production process schedules, and the work time is delayed.

In addition, since the manufacturing of such a dock is enormous cost, it is difficult to solve the above problem through the manufacture of additional dock.

Thus, there is a movement to produce a 3500 tonne large hull block in a secluded place on land other than the dock. However, even when such a large hull block is manufactured onshore, there is a lot of difficulty because there is no transportation means to transport it into the dock.

The present invention has been made to overcome the disadvantages of the prior art as described above, to provide a large hull block manufacturing method capable of manufacturing a large hull block in a secluded area other than the dock, and to transport it into the dock. Make it.

The present invention for achieving the above object, the step of manufacturing a plurality of hull block using a land crane; Inserting a plurality of transporters into a plurality of carriers; Loading the plurality of hull blocks into the plurality of carriers and moving them to a secluded place; Removing the plurality of transporters and adjusting the level of the plurality of carriers; Combining the plurality of hull blocks onto the plurality of carriers to produce one large hull block; And moving the large hull block into the dock and seating on the bottom of the dock to provide a large hull block manufacturing method using a plurality of sphere carriers.

In the case where the plurality of hull blocks are curved blocks, when loading the carriers, it is preferable that the plurality of hull blocks be supported by a plurality of supports on the plurality of carriers.

At this time, when the water is discharged in the dock, the step of moving the large hull block into the dock, and seating on the bottom of the dock, the carrier of the plurality of spheres on which the completed large hull block is loaded Moving to a working range of a marine crane using a plurality of transporters; Towing the large hull block with the marine crane; Moving the offshore crane to the dockgate; And mounting the large hull block directly to the dock bottom with the offshore crane.

In addition, when water is introduced into the dock, the step of moving the large hull block into the dock, and seating on the bottom of the dock, the carrier of the plurality of spheres on which the completed large hull block is loaded Moving to a working range of a marine crane using the plurality of transporters; Towing the large hull block with the marine crane; Floating the large hull block with the offshore crane and moving the large hull block to the inside of the dock; Fixing the position of the large hull block and discharging the water inside the dock; And seating the large hull block on the dock bottom.

At this time, when the large hull block is a curved block, it is preferable to remove a plurality of supports for supporting the large hull block on the plurality of carriers when towing the marine crane.

Hereinafter, a preferred embodiment of a large hull block manufacturing method using a plurality of sphere carrier according to the present invention with reference to the accompanying drawings.

2 is a flowchart illustrating an embodiment of a large hull block manufacturing method using a plurality of sphere carriers according to the present invention, Figures 3a to 3f is an exemplary view for explaining the embodiment shown in FIG.

The flowchart shown in FIG. 2 will be described with reference to the exemplary diagrams shown in FIGS. 3A to 3F.

First, this embodiment includes the step 203 of manufacturing a plurality of hull blocks using a land crane.

As shown in FIG. 3A, three PE curved blocks are manufactured in the PE workplace 100 using the PI work transport crane 102 capable of moving back and forth.

Next, a step 205 of inserting a plurality of transporters into a plurality of carriers is provided.

4 is a perspective view showing a two-prong carrier used in the embodiment shown in FIG.

As shown in FIG. 4, the two-carrier carrier 130 has a plate shape that is horizontally formed at the upper portion thereof to accommodate a large hull block 106, and a lower portion thereof in the longitudinal direction of the carrier 130. It has two rows of passages 132.

Since two transporters 150 are inserted in each passage, a total of four transporters 150 carry and carry one carrier.

Due to the two rows of passages 132, the lower portion of the carrier 130 has three support legs, which are composed of a carrier center leg 134 and a carrier left and right legs 136. In addition, the lower end of the leg is attached to the height adjustable wedges (not shown) to enable horizontal adjustment of the carrier.

In the present embodiment, two carriers are used, but in another embodiment, a carrier having a larger number of spheres may be used for manufacturing and transporting a larger large hull block.

In addition, the transporter 150 inserted into the carrier 130 has six rows of wheels 152 each configured in two rows in the length direction of the carrier 130. Therefore, a total of 72 fine wheels 152 are disposed in the entire area of the transporter 150. In another embodiment, the position, the number of rows, the number of columns and the total number of wheels may be different.

This structure is advantageous for transporting large cargos of 500 to 1000 ton weight because it accepts large loads as small distributed loads on each wheel.

In addition, the transporter 150 may move up and down in the vertical direction. The transporter 150 is lowered and inserted into the carrier 130, and the transporter 150 is lifted up. To lift and move the carrier 130.

Next, the present embodiment includes the step 207 of loading the plurality of hull blocks in the carrier of the plurality of spheres, supported by a plurality of supports, and then moved to a secluded place.

As shown in FIG. 3C, two carriers 130 equipped with four transporters 150 move to the PE field, load three bow curved blocks 104, and move to a secluded location 108. Move.

At this time, since the bow surface block 104 has a form that can not be supported by itself, the position is fixed only by a plurality of supports 140 on the carrier 130 of the two ball.

The plurality of supports 140 have a straight beam shape, and are attached obliquely between the upper plate of the carrier 130 and the side outer plate of the bow curve block 104. In another embodiment, the shape and the support method of the supporter 140 may be modified.

In addition, unlike the present embodiment, in the case of a planar lower block or a tank lower block which can be supported by itself, it is not necessary to be supported by the support 140 as described above.

Next, the present embodiment includes a step 209 of removing the plurality of transporters and adjusting the horizontality of the carriers of the plurality of spheres.

When the four transporters 150 inserted into the two carriers 130 are lowered, the two carriers 130 stand with three legs. And adjust the wedge (not shown) installed in the lower end of the three legs of the two-pronged carrier 130 to level.

Next, the present embodiment includes a step 211 of manufacturing a single large hull block by combining a plurality of hull blocks on the carrier of the plurality of spheres.

As shown in FIG. 3D, on the horizontally adjusted two ball carrier 130 placed in a secluded place 108 of the land, the three bowed surface blocks 104 are mounted and welded, so that one Large hull block 106 is produced.

Next, the present embodiment includes a step 213 of moving the plurality of carriers loaded with the completed large hull block to the working range of the marine crane using the plurality of transporters.

As shown in FIG. 3E, when the production of one large hull block 106 is completed on the horizontally adjusted carrier 130, four transporters 150 are returned to each sphere of the carrier 130. The carrier 130 is inserted one by one, and the carrier 130 is moved to the working range of the marine cranes 126 and 128.

The carrier 130 into which the transporter 150 is inserted is impossible to move into the dock where the ship should be built as a land vehicle, and for this reason, the large hull block 106 is docked using a marine crane. It is going to be carried to the floor inside.

Next, the present embodiment includes a step 215 of removing a plurality of supports supported between the large hull block and the plurality of sphere carriers and towing the large hull block with the marine crane.

As shown in FIG. 3E, in this embodiment, one large hull block 106 made of three bow curved blocks 104 is supported by a plurality of supports 140. In this case, in order to tow the large hull block 106 to the marine cranes 126 and 128, first, the dismantling of the support 140 supporting the large hull block 106 should be prioritized. On the other hand, in the case of manufacturing a large hull block, such as a flat lower block or a tank lower block in another embodiment there is no need to use the support, it is also not required to remove the work.

At this time, the marine crane used in the present embodiment is a 3000 ton class offshore crane 126 and 3600 ton class offshore crane 128, using these two can be carried a large hull block of approximately 5700 tons weight . Accordingly, two offshore cranes 126 and 128 may be connected to lift and transport the large hull block 106 of about 3500 tons.

Next, the present embodiment includes a step 217 of moving the marine crane to the dock gate. In this case, since the marine cranes 126 and 128 do not have self-moving capability, the marine cranes 126 and 128 are moved to the dock gate 122 by using a plurality of tugboats (not shown).

Finally, this embodiment includes a step 219 of seating the large hull block directly to the dock bottom with the offshore crane.

As shown in FIG. 3F, since the water in the dock 120 is discharged, the marine cranes 126 and 128 are moored to the dock gate 122 as much as possible, and the marine cranes 126 and 128 are oriented. By extending the boom as much as possible it is possible to seat the large hull block directly to the dock bottom.

 In this case, since the large hull block 106 cannot stand on the bottom of the dock 120 by itself, posture fixing operation of the large hull block 106 is required by using a plurality of supports and lumber.

5 is a flowchart illustrating a step of moving a large hull block to the inside of the dock and seating on the bottom of the dock when water is introduced into the dock during a large hull block manufacturing method using a plurality of sphere carriers according to the present invention. .

This embodiment relates to a kind of tandem for moving the large hull block into the dock 120 in the state where the water is introduced into the dock 120, as described above, to the dock bottom using a marine crane This is a bit different from the way in which large hull blocks are seated directly. Therefore, only the differences from the previously described parts will be described according to the flowchart shown in FIG. 5.

Combining a plurality of hull blocks on a plurality of carriers to produce one large hull block, and then the carrier loaded with the completed large hull block to the working range of a marine crane using the plurality of transporters Moving 501.

Next, a step 503 of towing the large hull block with the offshore crane.

As shown in FIG. 3E, the large hull block 106 is a bow curved block, so in order to be self-injured, a water barrier construction must be performed first, and after such construction is completed, the large hull block is then used using the marine crane. Tow 106.

Next, floating the large hull block with the offshore crane and moving the injured large hull block into the dock 505. As a result, the large hull block 106 self-injured at sea is towed by a plurality of tugboats, and is moved inside the dock.

Next, fixing the position of the large hull block, and the step of discharging the water in the dock (507). At this time, the position fixing operation of the large hull block 106 is a rope connection operation between the plurality of pins and the large hull block 106 is installed on both sides of the dock 120, by the discharge of water after The large hull block 106 is to prevent the departure from the position.

 Finally, seating 509 the large hull block to the bottom of the dock.

In the above, the large hull block manufacturing method using the multiple sphere carrier by this invention was demonstrated. Such a technical configuration of the present invention will be understood by those skilled in the art that the present invention can be implemented in other specific forms without changing the technical spirit or essential features of the present invention.

Therefore, the above-described embodiments are to be understood in all respects as illustrative and not restrictive, and the scope of the present invention is indicated by the appended claims rather than the foregoing description, and the meanings of the claims and All changes or modifications derived from the scope and the equivalent concept should be construed as being included in the scope of the present invention.

As described above, according to the large hull block manufacturing method using a plurality of sphere carriers of the present invention, it is possible to manufacture a large hull block in a secluded place of the land using a plurality of sphere carriers, the dock rotation rate is maximized In addition, the ship construction period can be greatly shortened, and the productivity of the ship can be improved.

Claims (5)

Manufacturing a plurality of hull blocks using a land crane; Inserting a plurality of transporters into a plurality of carriers; Loading the plurality of hull blocks into the plurality of carriers and moving them to a secluded place; Removing the plurality of transporters and adjusting the level of the plurality of carriers; Combining the plurality of hull blocks onto the plurality of carriers to produce one large hull block; And Moving the large hull block into the dock and seating on the bottom of the dock; a large hull block manufacturing method using a plurality of sphere carriers. The method of claim 1, When the plurality of hull block is a curved block, when loading on the carrier, A large hull block manufacturing method using a plurality of carriers, characterized in that the plurality of hull blocks are supported by a plurality of supports on the plurality of carriers. The method of claim 1, In the case where the drinking water is discharged inside the dock, Moving the large hull block into the dock and seating the bottom of the dock, Moving the plurality of sphere carriers on which the completed large hull block is loaded to a working range of a marine crane using the plurality of transporters; Towing the large hull block with the marine crane; Moving the offshore crane to the dockgate; And And a step of directly seating the large hull block on the dock bottom by the marine crane. The method of claim 1, In the case where water is introduced into the dock, Moving the large hull block into the dock and seating the bottom of the dock, Moving the plurality of sphere carriers on which the completed large hull block is loaded to a working range of a marine crane using the plurality of transporters; Towing the large hull block with the marine crane; Floating the large hull block with the offshore crane and moving the large hull block to the inside of the dock; Fixing the position of the large hull block and discharging the water inside the dock; And Large hull block manufacturing method using a plurality of carriers, characterized in that the step of seating the large hull block on the bottom of the dock. The method according to claim 3 or 4, When the large hull block is a curved block, when towing by the marine crane, A large hull block manufacturing method using a plurality of carriers, characterized in that a plurality of supports for supporting the large hull block is removed on the carriers of the plurality of holes.

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