KR200483676Y1 - Jack up leg connection structure - Google Patents

Jack up leg connection structure Download PDF

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Publication number
KR200483676Y1
KR200483676Y1 KR2020150005931U KR20150005931U KR200483676Y1 KR 200483676 Y1 KR200483676 Y1 KR 200483676Y1 KR 2020150005931 U KR2020150005931 U KR 2020150005931U KR 20150005931 U KR20150005931 U KR 20150005931U KR 200483676 Y1 KR200483676 Y1 KR 200483676Y1
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KR
South Korea
Prior art keywords
leg
jack
guide
guide plates
center
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KR2020150005931U
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Korean (ko)
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KR20170000962U (en
Inventor
황진호
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대우조선해양 주식회사
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Priority to KR2020150005931U priority Critical patent/KR200483676Y1/en
Publication of KR20170000962U publication Critical patent/KR20170000962U/en
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Publication of KR200483676Y1 publication Critical patent/KR200483676Y1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
    • B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
    • B63B35/4413—Floating drilling platforms, e.g. carrying water-oil separating devices
    • B63B9/00—
    • B63B9/065—
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
    • E02B17/04—Equipment specially adapted for raising, lowering, or immobilising the working platform relative to the supporting construction
    • E02B17/08—Equipment specially adapted for raising, lowering, or immobilising the working platform relative to the supporting construction for raising or lowering

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Architecture (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Ocean & Marine Engineering (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)

Abstract

A jack-up leg connection structure and a jack-up leg connection method using the same are disclosed. According to one aspect of the present invention, there is provided a jack-up leg connection structure including a lower jack-up leg provided to allow a structure to vertically move up and down, an upper jack-up leg connected to an upper portion of the lower jack- And a leg setting guide for guiding the upper jack-up leg to be positioned on the vertical coaxial line of the lower jack-up leg in connecting the legs.

Description

JACK UP LEG CONNECTION STRUCTURE < RTI ID = 0.0 >

The present invention relates to a jack-up leg connection structure, and more particularly, to a jack-up leg connection structure in which a jack-up leg provided on an upper portion of a jack-up leg provided on an offshore structure, Up leg connection structure capable of accurately positioning a center line on a coaxial line.

An offshore structure is a structure that can remain at a point in the sea under any weather condition without any structure connected with the land. There are many places where marine structures are used. It is installed for the development and production of underground oil and gas, and it is also used as a harbor structure for the marching of large tankers.

When a large oil tanker dies, it needs a lot of water depths. Therefore, when dredging is not possible, it is necessary to extend Jetty and Dolphin to a deep place to make ports. This is called an offshore marine terminal.

Recently, marine structures have been created for power plants, petroleum storage facilities, fishery relay bases, and so on. Looking at the materials used for the construction of offshore structures, the most commonly used material is steel. At this time, the part under the sea uses a circular pipe with a cross-sectional shape because it receives less power of waves and currents. Another reason is that the steel pipe file can be used for foundation, and buoyancy And so on.

In the upper part of the sea, H-beams and other sections are used which are easy to manufacture and easy to maintain. Despite the disadvantages such as corrosion and good marine life, steel is most widely used as a material for offshore structures due to its ease of construction and installation, clarity of design, and robustness of structure.

Concrete structures are often used in areas with deep water depths and hard seafloor. Concrete is strong in corrosion resistance and can maintain a stable state only by self weight. The giant cylindrical concrete can be used as a storage facility for oil, etc., and the transportation, installation, and inspection of the structure can be easily performed. However, there are disadvantages that it is difficult to fabricate and the condition of seafloor geology is restricted, and its use is limited to the North Sea and polar regions.

Submarine oil development can be divided into three stages, namely, exploration, drilling and production, and there are structures for carrying out the work that accompanies each step. There are many other types of marine development, such as tidal power generation, seawater temperature difference development, deep sea mining, marine ranch, etc. There are also various types of offshore structures that have the best possible effect to achieve these objectives most efficiently.

One of the most widely used offshore structures, the jack up lig, is the most widely used drilling structure currently used for submarine oil drilling. As a deck box structure, Jack-up leg structures are installed with the reinforcement member.

Initially, a circular cross-section of the leg structure was used and this method proved to be efficient, and recently it has been applied to depths of 100 meters or more.

A spud can (not shown) is attached to the lower end of the jack-up leg to provide an excellent working condition during drilling, as if it were a fixed structure. When moving to another sea area, the jack-up leg structure is pulled up to the outside of the sea surface, buoyed by the buoyancy of the platform, and towed by a tug.

When the jack-up leg used in this way is required to be further connected to the jack-up leg at the upper portion thereof, the jack-up leg is accurately positioned on the vertical center line and the coaxial line by using a crane (not shown) And then connect it.

3, a plurality of plate-shaped guide pieces are welded to the outside of the jack-up legs, and then the jack-up legs to be connected are positioned. However, since the guide pieces are provided on the outer side of the jack- There is a problem that it is difficult to connect the jack-up legs.

In addition, a plurality of guide pieces are welded to the jack-up legs in the operation of removing the guide pieces after the connection operation is completed. There is a problem that unnecessary labor is consumed.

The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a jack-up leg which can guide the jack-up leg to be accurately positioned on an upper portion of a jack- And it is an object of the present invention to provide a rack-and-hook jig connection structure which can reduce the work time required for the rack-and-

According to an embodiment of the present invention, a structure is provided so as to be movable upward and downward, and includes a center leg having a plurality of rack gears formed on both sides thereof, a central leg formed integrally along the longitudinal direction of the center leg, A lower jack-up leg including at least one or more leg shells having openings on both sides and formed with upper and lower guide grooves, and an upper jack-up leg located on an upper portion of the lower jack- And at least one leg setting guide for guiding an assembling position of the upper and lower jack-up legs by inserting a lower guide groove of the upper jack-up leg at one end into the upper guide groove of the leg, May be provided.

According to an embodiment of the present invention, the upper and lower legs of the upper and lower jack-up legs are formed in a longitudinal direction from a position spaced apart from a predetermined distance from one end of the upper and lower center legs to a position spaced apart from the other end by a predetermined distance, The upper contact surface and the lower contact surface may be formed on the center leg, respectively.

According to one embodiment of the present invention, the leg shells of the upper and lower jack-up legs are formed in a curved shape to form a space portion.

According to an embodiment of the present invention, the at least one leg setting guide is in close contact with an upper close contact surface of the upper center leg and a lower close contact surface of the lower center leg, and has the same width as the inside of the space portion of each leg shell A left and right guide plate, and front and rear guide plates formed on one surface of the left and right guide plates in the longitudinal direction and having the same height as the inside of the space portion of each of the leg caps.

According to an embodiment of the present invention, the contact portions of the left and right guide plates and the front and rear guide plates, which are in contact with the inside of the space portion of the leg shell, can be formed in a shape corresponding to the inside of the leg shell.

According to an embodiment of the present invention, the left and right guide plates may be formed at both ends with a groove toward the axial direction of the left and right guide plates.

According to an embodiment of the present invention, the leg setting guide can be formed to engage with a contact portion of at least one of the left and right guide plates or the front and rear guide plates so as to be partially inserted into the upper guide groove of the lower jack-up leg.

According to an embodiment of the present invention, the leg setting guide may further include a stopper attached to a contact portion of at least one of the right and left guide plates or the front and rear guide plates.

According to an embodiment of the present invention, the leg setting guide is inserted into an upper guide groove of the lower jack-up leg, and a first divided portion having a first guide groove formed thereon and a lower guide groove of the upper jack- And a second divided portion formed with a third divided portion having a second guide groove formed at a lower portion thereof and a guide rail corresponding to the first and second guide grooves formed at an upper portion and a lower portion thereof and slidably coupled between the first and third divided portions. have.

According to an embodiment of the present invention, the leg setting guide may further include a guide member such that the first to third divisional parts may be positioned on the coaxial line with the vertical center line, And a second fixed body provided on the upper and lower portions of the second divided portion in a number corresponding to the first fixed body, and a second fixed body provided on the upper portion of the second divided body, And a guide pin for coupling the first fixing body and the second fixing body to each other.

According to an embodiment of the present invention, there is provided a method of assembling an upper jack-up leg, the method comprising: guiding the at least one leg setting guide to the upper portion of the lower jack-up leg; The upper jacket-up leg is inserted into the upper portion of the leg-setting guide provided on the lower jack-up leg, and then the upper and lower jack-up legs are connected to each other And the leg setting guide may include a left and right guide plate for guiding the left and right positions of the upper jack-up leg and a guide plate for guiding the front and rear positions of the upper and lower jack- And a front and rear guide plate It can be provided with a self-elevating leg connection method using the connection structure.

According to an embodiment of the present invention, the method may further include attaching a stopper to at least one of the left and right guide plates or the front and rear guide plates of the leg setting guide before the guide transfer step.

According to an embodiment of the present invention, the leg setting guide is inserted into an upper guide groove of the lower jack-up leg, and a first divided portion having a first guide groove formed thereon and a lower guide groove of the upper jack- And a second divided portion formed with a third divided portion having a second guide groove formed at a lower portion thereof and a guide rail corresponding to the first and second guide grooves formed at the upper and lower portions thereof and slidably coupled between the first and third divided portions And the step of removing the guide may separate the first and third divided portions after separating the second divided portion.

The present invention guides the position of the jack-up leg so that the vertical center line of the jack-up leg installed at the lower portion and the other jack-up leg installed at the upper portion can be accurately positioned on the coaxial line, So that it is possible to easily guide the other jack-up legs to the upper portion of the jack-up legs easily even when space is limited.

In addition, since the number of welding parts required to fix the jack-up legs installed is reduced, the working time required for connecting the jack-up legs can be remarkably reduced and accordingly, the removal is also relatively easy, There is an advantage that it can be greatly reduced.

1 is a perspective view schematically showing a configuration of a jack-up leg.
2 is a perspective view showing a jack-up leg installed and a jack-up leg connected to the upper portion thereof.
3 is a perspective view showing a guide piece installed for interconnecting conventional jack-up legs.
4 is an exploded perspective view illustrating a jack-up leg structure according to an embodiment of the present invention.
5 is a perspective view illustrating a leg setting guide according to an embodiment of the present invention.
6 is a perspective view illustrating an assembled state of the jack-up leg structure according to an embodiment of the present invention.
7 is a front view schematically showing a divided portion of a leg setting guide according to an embodiment of the present invention;
8 is a side view schematically illustrating a leg setting guide according to another embodiment of the present invention.
FIG. 9 is a schematic view showing a procedure of connecting jack-up legs using the jack-up leg connection structure in order.

Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. It should be noted that, in adding reference numerals to the constituent elements of the drawings, the same constituent elements are denoted by the same reference symbols as possible even if they are shown in different drawings. In the following description of the embodiments of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may obscure the embodiments of the present invention.

In describing the constituent elements of the embodiment of the present invention, terms such as first, second, A, B, (a), and (b) can be used. These terms are intended to distinguish the constituent elements from other constituent elements, and the terms do not limit the nature, order or order of the constituent elements. When a component is described as being "connected", "coupled", or "connected" to another component, the component may be directly connected or connected to the other component, Quot; may be "connected," "coupled," or "connected. &Quot;

FIG. 4 is an exploded perspective view illustrating a jack-up leg structure according to an embodiment of the present invention, FIG. 5 is a perspective view illustrating a leg setting guide according to an embodiment of the present invention, FIG. 6 is a perspective view of an embodiment Up leg structure according to an embodiment of the present invention.

Referring to FIG. 4, the jack-up leg connection structure according to an embodiment of the present invention includes a lower jack-up leg 200 to which a drilling structure (not shown) And a leg setting guide 100 installed to position the upper jack-up leg 300 and the upper jack-up leg 300 on a vertical center line and a coaxial line on the upper side of the lower jack-up leg 200 do.

The lower jack-up leg 200 and the upper jack-up leg 300 according to an embodiment of the present invention will be described.

As shown in FIG. 1, the lower jack-up leg 200 is vertically installed so that the drilling structure (not shown) can be vertically transferred, and the reinforcement member 250, And the reinforcing member 202 is fixed between the lower jack-up legs 200 spaced apart in a triangular shape.

The reinforcing member 250 may be modified to have a truss-like structure in order to more stably cope with the normal stress and the lateral stress applied to the lower jack-up leg 200, and may be applied in various forms.

The lower jack-up leg 200 includes a center leg 210 having a plurality of rack gears formed therein so that the drilled structure can be moved up and down along the lower jack-up leg 200 through an elevating means (not shown) And a leg shell 220 provided to allow the reinforcing member 250 and the like to be installed.

The center leg 210 is vertically installed with a plurality of rack gears formed on both sides thereof.

The leg shell 220 may be integrally formed on one side or both sides along the longitudinal direction of the center leg 210, as shown in FIG.

As described above, the leg shell 220 is integrally formed on both sides of the center leg 210. However, the leg shell 220 is spaced apart from the one end of the center leg 210 by a predetermined distance, Can be formed to a spaced point.

The lower jack-up leg 200 shown in FIG. 4 shows the upper part of the lower jack-up leg 200 shown in FIG. 1, and the other end (not shown) The upper jack-up leg 300 is provided in the same configuration as the lower jack-up leg 200 and is located above the lower jack-up leg 200. The upper jack-up leg 300 of FIG. As shown in Fig.

The leg jacket 220 formed as described above is formed with a contact surface 230 on which the leg setting guide 100 to be described later is closely attached to the center leg 210 of the lower jack- .

The lower jack-up leg 200 includes a leg shell 220 integrally formed with the center leg 210 to form a space 221 between the center leg 210 and the leg shell 220, Can be formed.

The leg shell 220 according to one embodiment of the present invention may be formed in a curved shape. However, the present invention is not limited thereto, and if the reinforcing member 250 (FIG. 1) Can be applied.

4, the upper and lower guiding grooves 222 and 222, which are opened at one side and the other side (not shown), respectively, into which the leg setting guide 100 can be inserted, May be formed.

The lower guide groove (not shown) of the lower jack-up leg 200 is not shown, but is the same as the lower guide groove 322 of the upper jack-up leg 300 shown in FIG.

The upper jack-up leg 300 located at the upper portion of the lower jack-up leg 200 has the same configuration as the lower jack-up leg 200, as described above.

The upper jack-up leg 300 includes a center leg 310 and a leg mantle 320 and includes a space portion 321 and includes an upper guide groove (not shown) and a lower guide groove 322 .

Next, a leg setting guide according to one embodiment of the present invention will be described.

The leg setting guide 100 is inserted into the upper and lower jack-up legs 200 and 300 to guide the left and right guide plates 110 and the front and rear guide plates 110 and 120 for positioning the lower and upper jack-up legs 200 and 300 on the coaxial line, 120).

At least one of the leg setting guides 100 may be provided to the upper and lower jack-up legs 200 and 300.

The left and right guide plates 110 may be formed to be in perpendicular contact with the contact surfaces of the lower and upper jack-up legs 200 and 300 shown in FIG. 4. The upper and lower jack-up legs 200 and 300 As shown in Fig.

Since the left and right guide plates 110 are inserted into the inner sides of the leg shells 220 and 320 of the upper and lower jack-up legs 200 and 300, the upper and lower guide grooves 221 and 221 of the leg shells 220 and 320 , ≪ / RTI > 321).

In order to position the upper jack-up leg 300 connected to the upper portion of the lower jack-up leg 200 in the left-right direction to coincide with the lower jack-up leg 200,

The left and right guide plates 110 are formed on the inner sides of the leg shells 220 and 320 to be smoothly inserted into the upper and lower guide grooves 222 and 322 of the leg shells 220 and 320, Since the shape of the leg shells 220 and 320 is formed in a curved shape in the present embodiment, the contact portions 111 and the contact portions 111, which are in contact with the space portions 221 and 321, But the present invention is not limited thereto and can be applied to the shape of the space portion of the leg shell.

The front and rear guide plates 120 of the leg setting guide 100 may be formed perpendicular to the axial center line of the left and right guide plates 110 along the longitudinal direction of the left and right guide plates 110.

Since the front and rear guide plates 120 are inserted into the inside of the leg shells 220 and 320 of the upper and lower jack-up legs 200 and 300, the leg shells 220 and 320 And the upper and lower guide grooves 222 and 322, respectively.

In order to position the upper jack-up leg 300 connected to the upper portion of the lower jack-up leg 200 in the fore-and-aft direction so as to coincide with the lower jack-up leg 200,

The left and right guide plates 110 are also formed in the same manner as the left and right guide plates 110 so that the contact portions 111 abutting the space portions 221 and 321 are inserted into the upper and lower guide grooves 222 and 322, But the present invention is not limited thereto and can be applied to the shapes of the space portions 221 and 321 of the leg shells 220 and 320. [

5, the engaging jaws 113 may be provided on the contact portions 111 of the left and right guide plates 110 to be partially inserted into the lower jack-up leg 200 have.

The hooking jaws 113 are partially protruded so that the leg setting guide 100 is hooked on the upper portion of the lower jacking-up leg 200.

5, the latching jaws 113 may be formed on the contact portions 111 of the left and right guide plates 110, but may be formed on the contact portions 111 of the front and rear guide plates 120 as needed.

Referring to FIG. 6, the stop guide 130 may be mounted in the leg guide 100 so that the stop guide 130 is partially inserted into the lower jack-up leg 200.

The stopper 130 may be mounted on the contact portion 111 of the left and right guide plates 110 and may be mounted on the front and rear guide plates 120 to fix the leg setting guide 100 to the lower jack- have.

The stopper 130 and the leg setting guide 100 may be welded together.

6, the upper jack-up leg 300 can be accurately positioned in a state where the leg-setting guide 100 is installed inside the lower jack-up leg 200 rather than outside the lower jack-up leg 200, It is possible to remarkably reduce the work time significantly.

After the position adjustment of the upper jack-up leg 300 is completed, the leg setting guide 100 must perform a welding operation to connect the lower jack-up leg 200 to the upper jack-up leg 300, 4 to 6, grooves 112 may be formed toward the axial direction of the left and right guide plates 110 so that the welding operation can be performed while the setting guide 100 is installed.

The groove 112 of the leg setting guide 100 according to one embodiment of the present invention may be formed in a rhombic shape, but not limited thereto, and may be formed in various shapes.

7 is a front view schematically showing a divided portion of a leg setting guide according to an embodiment of the present invention;

After the connecting operation of the lower and upper jack-up legs 200 and 300 is completed, the leg setting guide 100 according to one embodiment of the present invention includes a connecting portion of the upper and lower jack-up legs 200 and 300, (Not shown) after removing only the stopper 130 welded to the leg setting guide 100 to reinforce the strength of the leg setting guide 100. However, when it is necessary to remove the leg setting guide 100, The leg setting guide 100 can be removed from the upper and lower jack-up legs 200 and 300 by removing the first and third split portions 410 and 430 after removing the illustrated second divided portion 420 .

6, the third partitioning part 430 is partially inserted into the upper guide groove 222 of the lower jacking-up leg 200, And is partially inserted into the lower guide groove 322 of the upper jack-up leg 300. Since the first and third split portions 410 and 430 are inserted into the upper and lower jack-up legs 200 and 300, the second split portion 420 is cut to separate the first and third split portions 410 and 430 Can be removed.

Next, the leg setting guide 100 according to another embodiment of the present invention will be described, but the specific configuration thereof is the same as that of the embodiments shown in Figs. 4 to 6, and therefore, a repetitive description thereof will be omitted.

8 is a side view schematically illustrating a leg setting guide according to another embodiment of the present invention.

Referring to FIGS. 7 and 8, the leg setting guide 100 according to another embodiment of the present invention may form a first guide groove 415 on the upper portion of the first divided portion 410, And a second guide groove 435 may be formed at a lower portion of the divided portion 430.

The first guide groove 415 and the second guide groove 435 may be formed in a T shape as shown in FIG. 7, but the present invention is not limited thereto. (Dove-Tail) type can be applied as long as it can be slidably assembled with the slide member 425.

The first guide groove 415 and the second guide groove 435 may be formed in the left and right guide plates 110 but may be formed in the front and rear guide plates 120 as necessary to form the first through third divided portions 410 and 420 , 430) can be further given.

The second divisional part 420 is formed on the upper and lower parts of the guide rail 425 so as to conform to the guide grooves 415 and 435 of the first divisional part 410 and the second divisional part 420 .

The guide rails 425 may be formed along the horizontal direction of the leg setting guide 100.

According to the above-described configuration, the leg setting guide 100 can be removed by removing the second divided portion 420 even after the connection of the lower jack-up leg 200 and the upper jack-up leg 300 is completed, It is possible to sequentially remove the first divided portion 410 inserted into the lower guide groove 322. After the first divided portion 410 is removed, the upper guide groove 222 of the lower jack- The legs setting guide 100 forming the first to third divided portions 430 can remove the third divided portion 430 inserted into the upper and lower jack-up legs 200 and 300, Can be simply removed.

In addition, the leg setting guide 100 may further include a guide member 500 on one side of the left and right guide plates 110.

The guide member 500 may be positioned such that the first to third divided portions 410, 420, 430 are coaxial with the vertical center line. The first to third divided portions 410, 420, 430 ) Can be fixed.

Referring to FIG. 8, the guide member 500 may include guide pins 510 and fixing bodies 520 and 530 formed on the left and right guide plates 110 of the leg setting guide 100, for example.

The fixed bodies 520 and 530 are disposed on the upper portion of the first divided portion 410 and the upper portion of the second fixed portion 530 and the second divided portion 420 provided on the lower portion of the third divided portion 430, And a second fixing body 520 provided at a lower portion thereof.

At least one of the first fixing body 530 and the second fixing body 520 may be threadedly coupled with the guide pin 510 by forming a threaded groove (not shown).

The grooves (not shown) of the first fixing body 530 and the second fixing body 520 may be concentric with each other.

Referring to the guide member 500 shown in FIG. 8, when the first to third divided portions 410, 420 and 430 of the leg setting guide 100 are engaged, the first fixing body 530, And the grooves (not shown) of the second fixing body 520 are concentric to each other. Therefore, the guide pins 510 are coupled to the first to third divided parts 410, 420, It can be fixed so as to be positioned on the line.

The connection process of the jack-up leg using the jack-up leg connection structure according to the embodiment of the present invention having the above-described structure will be described with reference to FIG.

9 is a flowchart showing a jack-up leg connection method using the jack-up leg connection structure.

9, the stopper 130 is attached to at least one of the left and right guide plates 110 of the leg setting guide 100 or the front and rear guide plates 120 (step of attaching the stopper).

Next, the leg setting guide 100 is transferred to the upper portion of the lower jack-up leg 200 through a crane (not shown) (guide transfer step).

Next, the leg setting guide 100 is inserted into the upper guide groove 222 formed in the lower jack-up leg 200 (step of installing guide).

Next, the upper jack-up leg 300 is positioned on the upper side of the lower jack-up leg 200 provided with the leg setting guide 100 on the vertical center line and the coaxial line (upper jack-up leg transfer step)

The lower guide groove 322 formed in the upper jack-up leg 300 is inserted into the upper end of the leg setting guide 100 provided in the lower jack-up leg 200, and then the upper and lower jack-up legs 200, 300) (connecting upper and lower jack-up legs)

After separating the second division part 420, the first and third division parts 410 and 430 are separated from the upper and lower jack-up legs 200 and 300 to separate the leg setting guide 100 (Removing the guide)

Therefore, according to the present invention configured as described above, the position of the jack-up leg can be guided so that the vertical center line of the jack-up leg installed at the lower portion and the other jack-up leg installed at the upper portion can be accurately positioned on the coaxial line , It can be inserted into the inside of the jack-up leg to guide the connection position, so that it is possible to easily guide another jack-up leg to the upper portion of the jack-up leg easily even when space is limited.

In addition, since the welding portions necessary for fixing the jack-up legs installed are reduced, the work time required for connecting the jack-up legs can be remarkably shortened and accordingly, the removal is also relatively easy, It can be greatly reduced.

As described above, the present invention is not necessarily limited to these embodiments because all the constituent elements constituting the embodiment of the present invention are described as being combined or operated as a single unit. That is, within the scope of the present invention, all of the components may be selectively coupled to one or more of them. Furthermore, the terms "comprises", "comprising", or "having" described above mean that a component can be implanted unless otherwise specifically stated, But should be construed as including other elements. All terms, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, unless otherwise defined. Commonly used terms, such as predefined terms, should be interpreted to be consistent with the contextual meanings of the related art, and are not to be construed as ideal or overly formal, unless expressly defined in the art.

The description above is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in this specification are intended to illustrate rather than limit the technical idea of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas which are within the scope of the same should be interpreted as being included in the scope of the present invention.

10; Guide piece
100; Leg setting guide
110; Right and left guide plates
111; Contact
112; Groove
113; Jaw
120; Front and rear guide plate
130; stopper
200; Lower jack-up leg
210; Lower center leg
220; Lower leg shell
221; The lower jack-up leg space portion
222; Upper guide groove
230, 330; Close face
250; The reinforcing member
300; Upper jack-up leg
310; Upper center leg
320; Upper leg shell
321; Upper jack-up leg space portion
322; Lower guide groove
410; The first division
415; The first guide groove
420; Second division
425; Guide rail
520; The second fixed body
430; The third installment
435; The second guide groove
530; The first fixed body
510; guide pin

Claims (14)

A center leg having a plurality of rack gears formed on both sides thereof so as to be movable upward and downward and a center leg integrally formed along the longitudinal direction of the center leg and having a space formed therein, A lower jacket leg including at least one or more leg shells formed with guide grooves;
An upper jack-up leg having the same configuration as that of the lower jack-up leg and positioned at an upper portion of the lower jack-up leg; And
At least one leg setting guide having one end partially inserted into the upper guide groove of the lower jack-up leg and the other end inserted with the lower guide groove of the upper jack-up leg to guide the assembling position of the upper and lower jack- ,
The leg shells of the upper and lower jack-
Wherein the upper and lower center legs are formed in a longitudinal direction from a position spaced apart from the one end of the upper and lower center legs to a position spaced apart from the other end by a predetermined distance,
Wherein the at least one leg setting guide comprises:
A left and right guide plate which is in close contact with an upper close contact surface of the upper center leg and a lower close contact surface of the lower center leg and has the same width as the inside of the space portion of the outer surface of each leg;
And a front and rear guide plate formed on one side of the left and right guide plates in the longitudinal direction and having the same height as the inside of the space portion of each of the leg shells,
delete The method according to claim 1,
The leg shells of the upper and lower jack-
Wherein the jack-up leg connecting structure is formed in a curved shape to form a space portion
delete The method according to claim 1,
Wherein a contact portion between the left and right guide plates and the front and rear guide plates which are in contact with the inside of the space portion of the leg shell is formed and inserted into a shape corresponding to the inside of the leg shell,
The method according to claim 1,
The left and right guide plates
And a groove is formed in a part of both ends toward the axial direction of the left and right guide plates.
6. The method of claim 5,
The leg setting guide includes:
Up hook is formed at a contact portion of at least one of the left and right guide plates or the front and rear guide plates so as to be partially inserted into the upper guide groove of the lower jack-
6. The method of claim 5,
The leg setting guide includes:
Further comprising a stopper attached to a contact portion of at least one of the left and right guide plates or the front and rear guide plates.
The method according to claim 1,
The leg setting guide includes:
A first split portion inserted into the upper guide groove of the lower jack-up leg and having a first guide groove formed thereon;
A third divided portion into which a lower guide groove of the upper jack-up leg is inserted and a second guide groove is formed in a lower portion thereof; And
And a second divided portion formed with guide rails corresponding to the first and second guide grooves on the upper and lower portions and slidably coupled between the first and third divided portions.
10. The method of claim 9,
The leg setting guide includes:
Further comprising a guide member, wherein the first to third split portions are positioned on the coaxial line with the mutually perpendicular vertical center line.
11. The method of claim 10,
The guide member
A first fixing body provided on at least one of the upper portion of the first divided portion and the lower portion of the third divided portion;
A second fixed body provided on the upper and lower portions of the second divided portion in a number corresponding to the first fixed body; And
And a guide pin for coupling the first fixing body and the second fixing body to each other,
delete delete delete
KR2020150005931U 2015-09-04 2015-09-04 Jack up leg connection structure KR200483676Y1 (en)

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KR102477646B1 (en) * 2018-10-19 2022-12-13 삼성중공업 주식회사 Leg for offshore structure
KR102422836B1 (en) * 2020-12-16 2022-07-19 삼강엠앤티 주식회사 Leg joint position correcting apparatus

Citations (1)

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Publication number Priority date Publication date Assignee Title
KR100608311B1 (en) * 2005-04-12 2006-08-02 대우조선해양 주식회사 Coupling device of inserting type for scaffolding system

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Publication number Priority date Publication date Assignee Title
KR101444319B1 (en) * 2013-03-15 2014-09-26 삼성중공업 주식회사 Device for guiding connection of leg and method thereof

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100608311B1 (en) * 2005-04-12 2006-08-02 대우조선해양 주식회사 Coupling device of inserting type for scaffolding system

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