KR20230151271A - Ship launching method using buoyancy reinforcement airbags - Google Patents

Abstract

The present invention relates to a method of launching a ship using an airbag for buoyancy, which allows a ship built on land without a ramp to be easily launched on the water.

Description

Method of launching a ship using airbags for buoyancy {SHIP LAUNCHING METHOD USING BUOYANCY REINFORCEMENT AIRBAGS}

The present invention relates to a method of launching a ship using an airbag for buoyancy, which allows a ship built on land without a ramp to be easily launched on the water.

Generally, in the case of small ships, the ship can be built and completed on land and then launched by sliding the ship into the sea. On the other hand, in the case of large ships, a method of building the ship in a dry dock and then launching the ship by filling the dock with water is used.

In this case, in the ship building and launching method using the dry dock, each part of the hull is first divided into unit blocks and manufactured separately. Then, the manufactured unit blocks are transported to the dry dock and assembled by welding to complete the hull. The launching process is then performed by filling the dock with water and pulling the completed hull out of the dock while floating on water.

However, the construction and launching method using a dry dock as described above requires a large area and a large cost to construct and operate a large dry dock. Therefore, there are difficulties in operating dry docks other than large shipyards that build many ships.

Accordingly, various technologies have been proposed that allow large ships, barges, pontoons, etc. (hereinafter collectively referred to as 'ships') to be built on land and then launched on the water. For example, 'Method of launching a ship using an airbag pillar' was previously filed by the present applicant as Republic of Korea Patent No. 10-1496779 (announcement date 2015.02.27.).

Referring to Figure 1, the conventional method of launching a ship using an airbag pillar includes a ship building step (S1), a lifting step (S2), a rolling bag installation step (S3), a seating step (S4), and a moving step (S5). ) includes.

A detailed description of this conventional ship launching method is as follows.

First, the ship is built in a construction yard on land (H) equipped with a plurality of pits (grooves) each with a cover plate installed in the upper opening. In this case, the pit is formed as a groove of a predetermined depth so that an upward airbag pillar can be inserted therein. The rising airbag pillars are arranged in a direction intersecting the longitudinal direction of the ship being built, and a plurality of airbag pillars are arranged to be spaced apart along the longitudinal direction of the ship. And the cover plate mounted on the upper opening of the pit supports the bottom of the ship being built (S1).

When the construction of the ship is completed, air is injected into the raising airbag pillar inserted in the pit and expanded to raise the cover plate supporting the bottom of the ship. Accordingly, the bottom of the built ship can be spaced at a predetermined height from the top of the building (S2).

Then, a plurality of rolling airbag pillars are spaced apart from each other along the direction of movement of the ship in the gap between the bottom of the ship and the upper surface of the drying yard, which are spaced apart at a predetermined height. Then, air is injected into the rolling airbag pillar to inflate it (S3).

Then, by removing the air from the inflated rising airbag pillar again and lowering the cover plate that supported the ship, the bottom of the ship can be seated on the inflated rolling airbag pillar (S4).

In this state, the launching process of the ship can be performed by applying an external force to the ship and moving the ship along the direction in which the rolling airbag pillar rolls (the longitudinal direction of the ship) (S5).

However, the conventional method of launching a ship using an airbag pillar as described above requires a launching ramp with a gentle slope so that a ship built on flat land can be moved to the water. In other words, there are limitations in launching ships built on land onto the water in rivers and lakes where slopes are not provided.

Republic of Korea Patent No. 10-1496779 (announcement date 2015.02.27.)

The present invention was developed to solve the above-mentioned problems, and its purpose is to provide a method of launching a ship using an airbag for buoyancy reinforcement, which allows a ship built on land without a ramp to be easily launched on the water.

The method of launching a ship using an airbag for buoyancy reinforcement according to the present invention for realizing the above-described purpose includes a land movement step of moving a ship built on land forward toward the water via a plurality of rolling airbag pillars; An airbag installation step of installing an airbag for buoyancy reinforcement on the water adjacent to the revetment when the bow of the ship is located on the revetment; A stern raising step of stopping the movement of the ship when the bow of the ship is located on the water and the stern is located at the top of the revetment, and injecting air into the buoyancy reinforcement airbag to raise the stern to a predetermined height above the revetment; And a water movement step of moving the ship forward while lifting the stern of the ship to space the stern a predetermined distance from the shore, and then lowering the air pressure of the buoyancy reinforcement airbag to float the ship on the water. there is.

In this case, the airbag for buoyancy reinforcement may be formed in the shape of a pillar of a predetermined length, and may be disposed long in a direction intersecting the forward direction of the ship to support the bottom of the stern of the ship.

Additionally, a plurality of airbags for buoyancy reinforcement may be bundled and arranged in parallel.

In addition, the airbag for enhancing buoyancy may include at least two first airbags arranged side by side on the water and submerged to a predetermined depth; and at least one second airbag disposed at the upper center of the first airbag to support the bottom of the ship.

Additionally, the position of the airbag for reinforcing buoyancy may be fixed to the revetment or at a predetermined point of the ship via a fixing means.

In addition, in the stern raising step, the step of installing an airbag for bow support on the bottom of the bow of the ship to prevent the bow of the ship from being submerged in the water more than a standard value may be further included.

The method of launching a ship according to the present invention with the above configuration has the advantage of being able to easily launch a ship built on land such as a river or lake without a slope onto the water using simple equipment such as an airbag for buoyancy reinforcement. There is.

1 is a flow chart showing a conventional ship launching method,
Figure 2 is a flow chart showing a method of launching a ship using an airbag for buoyancy reinforcement according to the present invention;
Figures 3a to 3f are side views showing the process of launching a ship through a ship launching method using an airbag for buoyancy reinforcement according to the present invention;
Figure 4 is a side view showing an airbag for buoyancy reinforcement according to another embodiment of the present invention.

Hereinafter, the configuration and operation of specific embodiments of the present invention will be described in detail with reference to the attached drawings.

Here, in adding reference numerals to components in each drawing, it should be noted that identical components are indicated with the same reference numerals as much as possible, even if they are shown in different drawings.

Figure 2 is a flow chart showing a method of launching a ship using an airbag for buoyancy reinforcement according to the present invention.

Referring to FIG. 2, the method of launching a ship using an airbag for buoyancy reinforcement according to a preferred embodiment of the present invention includes a land movement step (S10), an airbag installation step (S20), a stern raising step (S30), and a water movement step. (S40) may be included.

A detailed description of the configuration of the present invention is as follows.

Referring to FIG. 3A, the land movement step (S10) is a step in which the ship (1) built on the flat land of land (H) is moved forward toward the water via a plurality of rolling airbag pillars (3).

Specifically, after the ship (1) is built on the flat surface of land, it goes through the process of moving forward toward the water (W) via a plurality of rolling airbag pillars (3) that support the bottom of the ship (1). do. If the rolling airbag pillar (3) is twisted when moving forward, it may need to be relocated.

In addition, the forward movement of the ship (1) on the flat land of land (H) can be achieved by pulling from the front using an excavator or winch.

In this way, the method of moving the ship (1) forward from land to water using the rolling airbag pillar (3) is a technology previously known by the present applicant as mentioned in the prior art, and a detailed description thereof is provided. will be omitted.

Hereinafter, the present invention will focus on the process of moving and launching a ship (1) built on land (H) without a ramp to the water.

Referring to FIG. 3b, the airbag installation step (S20) is performed on land (where a ramp is not provided) when the ship (1) moves forward toward the water (W) while being supported by a plurality of rolling airbag pillars (3). This is the step of installing an airbag 100 for reinforcing buoyancy that supports the bottom of the stern 1b of the ship 1 so that it can be moved from the revetment 20 at the border between H) and the water W) to the water W. In this case, the revetment 20 may be a boundary structure of various types, including a quay wall.

Specifically, when the ship 1 moves forward by an external force and the bow 1a is located on the vertical line of the revetment 20, the revetment 20 and An airbag (100) for buoyancy reinforcement is installed in the adjacent water.

In this case, the buoyancy reinforcing airbag 100 may be formed in a cylindrical or polygonal pillar shape. The airbag 100 for reinforcing buoyancy may be arranged long in a direction intersecting the forward direction of the ship 1.

In addition, a plurality of the buoyancy reinforcement airbags 100 may be arranged in a bundle in parallel to provide buoyancy to lift the ship 1 to a predetermined height.

For example, the buoyancy enhancing airbag 100 includes at least two first airbags 110 arranged side by side on the water W, and is disposed at the upper center of the first airbag 110 to support the ship 1 It may include at least a second airbag 120 supporting the bottom of the.

That is, the first airbag 110 is a part that is submerged in the water (W) to a predetermined depth, and the second airbag 120 is a part that is stacked on top of the first airbag 110 and supports the bottom of the ship (1). . In this case, the second airbag 120 may have a smaller tube diameter than the first airbag 110. Accordingly, the height of the stern 1b can be quickly adjusted by adjusting the air pressure of the second airbag 120.

In this case, in the present invention, an example of the case where two first airbags 110 and one second airbag 120 are provided is shown and explained, but there is a need to improve the buoyancy supporting the ship (1). In some cases, more than that number can be applied.

Additionally, the position of the airbag 100 for reinforcing buoyancy may be fixed to the revetment 20 or a predetermined point of the ship 1 via a fixing means. The fixing means is not particularly limited in the present invention as various means such as rings, wires, and chains can be applied.

In addition, a plurality of rolling airbag pillars 3 spaced apart along the forward direction of the ship 1 are used to adjust the air pressure of the rolling airbag pillars 3 arranged at the front and rear sides to each other during the launching process of the ship 1. You can set it differently. That is, during the entry process of the ship 1 from land (H) to water (W), the bow 1a can be set to tilt downward toward the front by lowering the air pressure of the rolling airbag pillar 3 located in the front.

Referring to FIGS. 3C and 3D, in the stern raising step (S30), the bow (1a) of the ship (1) is located on the water (W) and the stern (1b) of the ship (1) is located at the top of the revetment (20). At this time (see Figure 3c), the movement of the ship 1 is stopped and air is injected into the buoyancy reinforcement airbag 100 to lift the stern 1b to the top of the revetment 20 to a predetermined height (h) ( see Figure 3d).

That is, when the stern 1b of the ship 1 is not lifted to a predetermined height and the ship 1 is moved forward on the water, the moment the stern 1b passes the top of the revetment 20 and enters the water W. The rear end of the stern (1b) may collide with the inner surface of the revetment (20) as it sinks due to its own weight. In this case, there is a risk that the stern (1b) of the ship (1) may be damaged due to impact.

Therefore, when moving the stern 1b of the ship 1 to the water W, the stern 1b of the ship 1 must be lifted using the buoyancy reinforcement airbag 100.

In this case, the bow is supported on the bottom of the bow (1a) of the ship (1) to prevent the bow (1a) from being submerged beyond the standard value in the water (W) during the process of lifting the stern (1b) of the ship (1). An airbag 130 can be installed. This airbag 130 for ship owner support can be selectively applied.

Through the above process, when the stern (1b) of the ship (1) is spaced apart by a predetermined height (h), the winch pulley connected to the ship (1) is separated and prepared to be moved by pushing it to the water (W) side using an excavator.

Referring to FIGS. 3E and 3F, the water movement step (S40) moves the ship (1) forward with the stern (1b) of the ship (1) lifted and the stern is spaced a predetermined distance from the revetment (20). In addition (see FIG. 3e), the air pressure of the buoyancy reinforcing airbag 100 is gradually lowered to float the ship 1 on the water (W) (see FIG. 3f).

In this case, in the present invention, the external force that moves the ship (1) forward is explained by taking the example of using equipment such as an excavator or winch as in the past, but it is not limited to this and the ship (1) can be easily moved. If so, various power sources can be selectively changed and applied.

After the ship (1) is floated on the water (W) and the launch is completed, a small amount of air is injected into the buoyancy reinforcement airbag (100) to float on the water (W), and then fixed to the lower part of the ship (1). You can. In this case, the buoyancy reinforcing airbag 100 can be fixed using a line to a hook (not shown) provided on the ship 1 to prevent it from moving.

Meanwhile, in the present invention, the buoyancy reinforcing airbag 100 is shown and explained as an example in which a plurality of the first airbag 110 and the second airbag 120 are bundled, but various structures can be provided as long as they can provide buoyancy. It can be changed and applied. For example, as shown in FIG. 4, the airbag 100 for reinforcing buoyancy can be changed and applied in the form of a single column with a large diameter.

Then, the process of launching a ship using the airbag for buoyancy reinforcement according to the present invention as described above will be described again with reference to FIGS. 3A to 3F.

First, the ship (1) built on flat land on land is moved forward toward the water via a plurality of rolling airbag pillars (3) (S10) (see Fig. 3a).

When the vessel (1) is moved forward by an external force and the bow (1a) is located on the revetment (20), buoyancy reinforcement is applied to the water adjacent to the revetment (20) while the movement of the vessel (1) is stopped. Install the airbag 100 (S20) (see Figure 3b).

Then, when the ship (1) is moved forward again so that the bow (1a) of the ship (1) is located on the water (W) and the stern (1b) of the ship (1) is located at the top of the revetment (20), the ship ( 1) Stop moving (see Figure 3c). In this state, air is injected into the buoyancy reinforcement airbag 100 to lift the stern 1b to a predetermined height from the top of the revetment 20 (S30) (see Figure 3d).

Then, with the stern 1b of the ship 1 raised to a predetermined height, the ship 1 is moved forward to space the stern a predetermined distance from the revetment 20 (see FIG. 3e). In addition, if the air pressure of the buoyancy reinforcement airbag 100 is lowered to float the ship 1 on the water W (see FIG. 3f), the ship launching process according to the present invention is completed (S40).

The method of launching a ship using an airbag for buoyancy reinforcement according to the present invention is to use a simple equipment such as an airbag for buoyancy reinforcement (100) to ship a ship (1) built on land such as a river or lake without a slope. It can be easily launched on the water.

In the above, the present invention has been shown and described with reference to specific specific embodiments, but the present invention is not limited to the above-described embodiments, and various changes and modifications can be made without departing from the technical spirit of the present invention.

1: Ship 1a: Bow
1b: Stern 3: Airbag pillar for rolling
20: revetment 100: airbag for buoyancy reinforcement
110: first airbag 120: second airbag
130: Airbag for athlete support H: Athletics
W: Award

Claims (6)

A land movement step of moving a ship built on land forward toward the water using a plurality of rolling airbag pillars;
An airbag installation step of installing an airbag for buoyancy reinforcement on the water adjacent to the revetment when the bow of the ship is located on the revetment;
A stern raising step of stopping the movement of the ship when the bow of the ship is located on the water and the stern is located at the top of the revetment, and injecting air into the buoyancy reinforcement airbag to raise the stern to a predetermined height above the revetment; and
A water movement step of moving the ship forward while lifting the stern of the ship to space the stern a predetermined distance from the revetment, and then lowering the air pressure of the buoyancy reinforcement airbag to float the ship on the water. Launching a ship comprising a. method.
According to paragraph 1,
The airbag for reinforcing buoyancy is,
A method of launching a ship, which is formed in the shape of a pillar of a predetermined length and is disposed long in a direction intersecting the forward direction of the ship to support the bottom of the stern of the ship.
According to paragraph 2,
The airbag for reinforcing buoyancy is,
A method of launching a ship in which multiple ships are bundled and arranged in parallel.
According to paragraph 3,
The airbag for reinforcing buoyancy is,
at least two plurality of first airbags arranged side by side on the water and submerged to a predetermined depth; and
A method of launching a ship including; at least one second airbag disposed at the upper center of the first airbag to support the bottom of the ship.
According to paragraph 3,
The airbag for reinforcing buoyancy is,
A method of launching a ship in which the position is fixed at the revetment or at a predetermined point of the ship using fixing means.
According to paragraph 1,
In the stern raising stage,
A method of launching a ship further comprising: installing an airbag for bow support on the bottom of the bow of the ship to prevent the bow of the ship from being submerged above a standard value in the water.

Images