KR200483676Y1 - Jack up leg connection structure - Google Patents
Jack up leg connection structure Download PDFInfo
- 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
- Prior art date
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Classifications
-
- 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
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
The lower jack-up
As shown in FIG. 1, the lower jack-up
The reinforcing
The lower jack-up
The
The
As described above, the
The lower jack-up
The
The lower jack-up
The
4, the upper and lower guiding
The lower guide groove (not shown) of the lower jack-up
The upper jack-up
The upper jack-up
Next, a leg setting guide according to one embodiment of the present invention will be described.
The
At least one of the leg setting guides 100 may be provided to the upper and lower jack-up
The left and
Since the left and
In order to position the upper jack-up
The left and
The front and
Since the front and
In order to position the upper jack-up
The left and
5, the engaging
The hooking
5, the latching
Referring to FIG. 6, the
The
The
6, the upper jack-up
After the position adjustment of the upper jack-up
The
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
6, the
Next, the
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
The
The
The second
The guide rails 425 may be formed along the horizontal direction of the
According to the above-described configuration, the
In addition, the
The
Referring to FIG. 8, the
The fixed
At least one of the
The grooves (not shown) of the
Referring to the
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
Next, the
Next, the
Next, the upper jack-up
The
After separating the
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)
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,
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
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 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.
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-
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 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.
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.
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,
Priority Applications (1)
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KR2020150005931U KR200483676Y1 (en) | 2015-09-04 | 2015-09-04 | Jack up leg connection structure |
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KR2020150005931U KR200483676Y1 (en) | 2015-09-04 | 2015-09-04 | Jack up leg connection structure |
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KR20170000962U KR20170000962U (en) | 2017-03-14 |
KR200483676Y1 true KR200483676Y1 (en) | 2017-06-12 |
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Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
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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)
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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KR101444319B1 (en) * | 2013-03-15 | 2014-09-26 | 삼성중공업 주식회사 | Device for guiding connection of leg and method thereof |
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Patent Citations (1)
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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