KR20110138031A

KR20110138031A - Dry dock

Info

Publication number: KR20110138031A
Application number: KR1020100058113A
Authority: KR
Inventors: 이태원
Original assignee: 삼성중공업 주식회사
Priority date: 2010-06-18
Filing date: 2010-06-18
Publication date: 2011-12-26

Abstract

The present invention relates to a dry dock.
According to an aspect of the present invention, the working space is filled with water and can dry the ship; A gate configured to shield an inlet of the work space and be in close contact with each other; And a support part protruding from a bottom surface of the work space and supporting a lower end of the block, wherein the support part is disposed at a boundary of the blocks and simultaneously supports two closely contacted blocks. Dock may be provided.

Description

Dry dock

The present invention relates to a dry dock.

A dock is a facility built in a shipyard or a harbor to repair and build a ship, and may be classified into a dry dock and a floating dock.

A dry dock is a structure in which a work space is formed by digging ground on the beach so that a ship can be dried and then launched at an on-site work place. The dry dock opens the entrance of the work space to fill the dock with water, and the entrance of the work space is a dock gate ( After shielding with a dock gate is formed to allow the ship to dry. Once the ship has been built, the ship can be launched by moving the gate to open the entrance to the work area.

A floating dock is a floating structure with a ballast tank inside the dock. When the water is filled in the ballast tank, the floating dock has a greater weight than its buoyancy and sinks into the water, and the water inside the ballast tank. When it is pulled out, the floating dock has a smaller self-weight than the buoyancy and floats on the water.

Dry dock has the advantage of being able to build a large ship, docking of a plurality of vessels at the same time, and to prevent damage to the hull during launching, it is widely used, and currently used dry dock has a width of about It is around 100m.

Recently, the demand of ship owners for oversized vessels, such as ships that can disassemble and transport offshore platforms, is increasing, and the need for dry docks with large widths and lengths is increasing to build these oversized vessels.

However, the above conventional technology has the following problems.

The magnitude of the stress applied to the gate of the dry dock is proportional to the maximum value of the bending moment applied to the gate, and the maximum value of the bending moment is proportional to the square of the length of the gate. In detail, when the gate is idealized by a bar supported at both ends of the inlet of the dock, the maximum value of the bending moment applied to the center of the gate when a predetermined load w is applied to the gate by hydraulic pressure (

) Is proportional to the square of the length (l) of the gate as

In this way, the longer the gate length, the greater the magnitude of the stress applied to the gate, so the gate should be formed thicker.

In other words, when a wide dry dock is installed in order to build a vessel that meets the needs of ship owners recently, the gate manufacturing cost is increased because the gate must be formed long, and the gate must be manufactured thickly to withstand the increased stress. can do.

In addition, since the gate is bulky, not only large boats are required for moving the gate, but also there are management difficulties.

Embodiments of the present invention, even if the width of the working space is to provide a dry dock that can form a thin thickness of the gate.

In addition, a dry dock using a gate that is easy to move and manage is provided.

According to an aspect of the present invention, the working space is filled with water and can dry the ship; A gate configured to shield an inlet of the work space and be in close contact with each other; And a support part protruding from a bottom surface of the work space and supporting a lower end of the block, wherein the support part is disposed at a boundary of the blocks and simultaneously supports two closely contacted blocks. Dock may be provided.

In addition, the bottom surface of the working space is provided with banjo to maintain the exact position of the ship to be dried, the support portion may be formed to a lower height than the banjo.

In addition, the support portion may include a fender for absorbing the impact caused by the block.

In addition, the blocks may be moved by a tugboat to shield the entrance of the work space.

In addition, the length of the block is

Can be satisfied.

The embodiments of the present invention form a gate of the dry dock into a plurality of blocks, and then support each block with a support formed at the bottom of the work space, thereby reducing the thickness of the gate used in the dry dock having a large work space. Can be reduced.

In addition, since the gate is formed by dividing the gate into a plurality of blocks having a short length and a thin thickness, the gate may be easily moved and managed.

1 is a side view of a dry dock according to an embodiment of the present invention.
2 is a plan view of a dry dock according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

In addition, in describing the present invention, when it is determined that the detailed description of the related known configuration or function may obscure the gist of the present invention, the detailed description thereof will be omitted.

1 is a side view of a dry dock according to an embodiment of the present invention, Figure 2 is a plan view of a dry dock according to an embodiment of the present invention.

1 and 2, a dry dock 100 according to an embodiment of the present invention, the work space 110, the entrance of the work space 110 is filled with sea water to dry the vessel It is provided on the gate (gate) 120 that can open and close, the bottom surface of the working space 110 and the banjo 130 that can support the ship, and the bottom surface of the entrance side of the working space 110 It may include a support unit 140 for supporting the dock gate 120.

The working space 110 is formed at the point where the land and the sea meet, it may be formed in a deep groove shape to fill the sea water to dry the vessel. The working space 110 is formed in a groove shape concave in a substantially 'c' shape when viewed from the top, and is open toward the sea.

The working space 110 is provided to be in contact with the workplace 200 of the land, in the workplace 200 of the land, such as the assembly and transport of the ship block to be built in the working space 110 can be made.

Here, the opening, that is, the entrance of the work space 110 may be shielded by the gate 120. In other words, the total length of the gate 120 may be provided longer than the entrance width of the work space 110.

The gate 120 may be divided into a plurality of gate blocks 121, and each of the blocks 121 may be provided as a floating body floating in water. The block 121 may be in close contact with each other so that the seawater filled in the work space 110 is not discharged to the outside when the work space 110 is shielded, and a sealing member formed of a material such as rubber Can be provided.

In addition, when the width of the entrance of the working space 110 is d, and the number of the blocks 121 is n, the length l of the block 121 may be set to satisfy the following relational expression. have.

That is, when the gate 120 is divided into three blocks 121 as in the present embodiment, the length of the block 121 is

2l <d <3l

It can be formed to satisfy.

By setting the length l of the block 121 as described above, when the block 121 is arranged in close contact, the inlet of the work space 110 can be completely shielded.

In addition, each of the blocks 121 may include a ballast tank (not shown) that can adjust the degree of floating in the water and a pump (not shown) for discharging the seawater of the working space 110 to the outside. .

In addition, each of the blocks 121 may be formed to have the same length.

In the present embodiment, three blocks 121 are provided as an example, but this is only an example, and any number may be provided according to the width of the work space 110 and the user's needs.

In addition, a plurality of the lumber 130 may be provided on the bottom surface of the working space 110. The lumber 130 may be provided in the form of protruding a predetermined length from the bottom surface of the working space 110, a plurality of can be arranged at regular intervals so that the vessel can maintain a fixed position during drying.

Meanwhile, at least one support part 140 supporting the block 121 may be provided at an inlet side of the work space 110.

The support unit 140 may be disposed to support a lower end of the block 121 and may be disposed at a boundary of the blocks 121. For example, the distance between the adjacent support parts 140 or the distance between the side wall of the work space 110 and the support part 140 may correspond to the length l of the block 121.

In addition, one support 140 may be provided to support two of the blocks 121 in contact with each other. That is, when n blocks 121 are provided, at least (n−1) supports may be provided.

When three blocks 121 are provided as in the present embodiment, two support parts 140 may be provided, and each of the support parts 140 may be disposed between two blocks in contact with each other to provide two blocks. The block can be supported simultaneously.

The support 140 may be formed to protrude from the bottom surface of the work space 110, and may be attached to the body 141 and the body 141 to support a load applied to the block 121. And a fender 142 contacting the block 121. The fender 142 may be formed of a material such as rubber in order to absorb the impact of the block 121 and to increase the tightness.

In addition, the support 140 may be formed at a height lower than the banjo 130 so as not to interfere when launching the ship built in the working space 110. However, since the hydraulic pressure applied to the upper side of the support part 140 may act as a rotation moment on the support part 140, the height of the support part 110 should be formed not too low. For example, the support 140 may have a height of 2.5m to 3m.

On the other hand, the block 121 may be moved by a tugboat to open and close the work space 110.

Hereinafter will be described the operation and effect of the dry dock 100 according to an embodiment of the present invention having the structure as described above. In addition, for convenience of description, the working space 110 will be described with reference to the open state.

When the working space 110 is open, the working space 110 is filled with seawater at the same level as the sea level.

Then, the block 121 is moved to the entrance of the work space 110 by a tugboat. The block 121 may be disposed such that the side surfaces are in close contact with each other, and the two blocks 121 may be supported by one support unit 140.

And, by filling the seawater in the ballast tank of the block 121, the block 121 may be in close contact with the bottom.

Accordingly, both end portions of each of the blocks 121 may be supported by the workshop 200 or the support 140 forming the work space 110. This can be simplified to a simple support model at both ends to which a predetermined load w is applied by the hydraulic pressure to the block 121. At this time, the maximum value of the bending moment applied to the center of the block 121 (

) Is shown below.

On the other hand, assuming that the gate is formed of one block to shield the entrance of the work space 110, the length (l ') of the block is larger than the width (d) of the inlet of the work space 110 In this case, the maximum value of the bending moment applied to the center of the gate is

Much larger than that.

In other words, by dividing the gate 120 into a plurality of the blocks 121 as in the embodiment of the present invention, by allowing the block 121 to be supported by the support 140, each block 121 It is possible to reduce the magnitude of the structural load applied to).

Therefore, since the thickness of the block 121 may be made thinner than when shielding the work space 110 in one block, the cost required for manufacturing the gate 120 may be reduced.

In addition, since the weight and volume can be reduced by forming a thin thickness of the block 121, the block 121 may be moved by a tug to more easily shield the work space 110.

In addition, since the water pressure (P) is proportional to the water depth, the magnitude of the water pressure applied to the block 121 is larger toward the lower side. Therefore, the magnitude of the force applied to the lower end of the block 121 is the largest. However, since the lower end of the block 121 is supported by the support 140, it can be safely supported.

When the support of the block 121 is completed, the seawater filled in the work space 110 may be discharged to the outside through a predetermined pump to adjust the water level inside the work space 110.

After the water level in the work space 110 is adjusted, the work space 200 may be dried on the water filled in the work space 110.

As described above as a specific embodiment of a dry dock according to an embodiment of the present invention, but this is only an example, the present invention is not limited to this, it should be interpreted as having the broadest range in accordance with the basic idea disclosed herein. . Those skilled in the art can easily change the material, size, etc. of each component according to the application field, and can be combined / substituted the disclosed embodiments to implement a pattern of a timeless shape, but this also does not depart from the scope of the present invention will be. It will be apparent to those skilled in the art that various changes and modifications may be readily made without departing from the spirit and scope of the invention as defined by the appended claims.

100: dry dock 110: work space
120: gate 121: gate block
130: antagonism 140: support
141: body 142: fender
200: workplace

Claims

A work space filled with water and capable of building the vessel;
A gate configured to shield an inlet of the work space and be in close contact with each other; And
Protruding to the bottom surface of the working space, includes a support for supporting the lower end of the block,
The support portion is disposed on the boundary of the blocks, dry dock, characterized in that for supporting the two close blocks at the same time.

The method of claim 1,
The bottom surface of the working space is provided with banjo to maintain the exact position of the ship to be dried,
The support portion is dry dock, characterized in that formed at a lower height than the banjo.

The method of claim 1,
Dry support, characterized in that the support portion includes a fender for absorbing the impact caused by the block.

The method of claim 1,
And said blocks are moved by a tug to shield the entrance of said workspace.

The method of claim 1,
The length of the block

Dry dock, characterized in that to satisfy.