KR20220048120A - Scaffold structure for heat insulation process of lng cargo, installation and dismantling method thereof - Google Patents

Abstract

The present invention relates to a scaffold structure installed on an inner wall surface of a cargo hold for the construction of an insulation layer inside the cargo hold. According to the present invention, the scaffold structure comprises: a standard module which is spaced apart from a corner portion of the cargo hold and has a plurality of posts coupled to the upper or lower portion to form a plurality of layers; a transverse cantilever module coupled to one side of the standard module and disposed adjacent to a port side or starboard side wall inside the cargo hold from the corner portion of the cargo hold; and a longitudinal cantilever module coupled to the other side of the standard module so as to be adjacent to the wall on the bow or stern side inside the cargo hold from the corner portion of the cargo hold.

Description

SCAFFOLD STRUCTURE FOR HEAT INSULATION PROCESS OF LNG CARGO, INSTALLATION AND DISMANTLING METHOD THEREOF

The present invention relates to a scaffold structure, and more particularly, to reduce the number of hours of work for workers when installing or dismantling a scaffold structure installed inside the cargo hold for the construction work of the insulation layer of the LNG cargo hold, and to schedule the installation of the insulation layer. It relates to a scaffold structure for insulation work of an LNG cargo hold that can be shortened, and to a method of installing and dismantling the scaffold structure.

Recently, as environmental pollution regulation standards for ships have been strengthened, interest in eco-friendly, high-efficiency fuels such as liquefied natural gas (LNG) or liquefied petroleum gas (LPG) is increasing.

Liquefied natural gas is liquefied by cooling methane obtained by refining natural gas collected from a gas field. .

In particular, liquefied natural gas (hereinafter referred to as 'LNG') is obtained by cooling natural gas to a cryogenic temperature (about -163 ℃). It is very suitable for long-distance transport.

A liquefied gas carrier (LNG carrier) for loading and unloading liquefied gas to a destination onshore by navigating the sea with LNG, or an LNG that transports LNG and operates the sea to arrive at a destination onshore, then regasifies the stored LNG and unloads it in the state of natural gas An LNG cargo hold that can withstand the cryogenic temperature of LNG is provided in the RV (LNG Regasification Vessel).

In addition, the produced natural gas is directly liquefied at sea and stored, and when necessary, the LNG FPSO (Floating Production Storage and Offloading) used to transport the stored LNG to an LNG carrier or LNG unloaded from the sea to an LNG carrier is stored. Floating offshore structures such as LNG FSRU (Floating Storage and Regasification Unit) that vaporize LNG as needed and supply it to onshore consumers are also equipped with LNG cargo holds installed in LNG carriers and LNG RVs.

Such an LNG cargo hold can be classified into a membrane type and an independent type depending on whether the insulating material for storing LNG in a cryogenic state directly acts on the load of the cargo.

Membrane-type cargo holds are divided into No 96 type and Mark Ⅲ type, and independent cargo holds have a spherical type MOSS tank and a prismatic type SPB tank.

1 is a view schematically showing the structure of a general cargo hold.

The cargo hold 10 is, as shown in FIG. 1, the bottom block 11 forming the bottom of the hull is formed to form the bottom of the cargo hold 10, the left and right transverse direction of the floor block 11 to form the side wall of the hull Side shell blocks 12 coupled to both ends may be formed to form a sidewall of the cargo hold 10 .

The trunk deck block 13 is coupled to the upper end of the side shell block 12 to seal and block the internal space of the cargo hold 10 to form the ceiling wall of the cargo hold 10 .

Although not shown in the drawings, a separate bulkhead block (not shown) may be coupled to both front and rear longitudinal ends of the floor block 11, and due to the above structure, the cargo hold 10 is a single sealed interior can have space.

On the other hand, a separate insulating layer (IL) is formed on the inner wall surface of the cargo hold 10 for external insulation. A separate scaffolding structure (scaffold, Scaffold) 30 is installed.

The above-described technical configuration is a background for helping understanding of the present invention, and does not mean a conventional technique widely known in the technical field to which the present invention pertains.

Republic of Korea Patent Publication No. 10-1083440 “Scaffolding device” Republic of Korea Patent Publication No. 10-1526369 “System scaffold assembly for LNG cargo hold insulation work” Republic of Korea Patent Publication No. 10-1526370 “System scaffold assembly for LNG cargo hold insulation work and cargo hold module using the same”

The scaffolding structure according to the prior art is installed by connecting each of the steel pipe members in the form of square or round pipes with bolts or pins to each other within a range where an operator can perform manual handling.

In order to dismantle such a structure, each member constituting the scaffolding is dismantled and the scaffolding is dismantled one by one from the top floor using a work elevator (cage size 3x1m) installed inside the cargo hold. Due to the dismantling, the number and schedule of work increases, which is not only inefficient, but also increases the incidence of musculoskeletal disorders and various safety accidents of the operator due to the scaffold member having an upper weight.

In addition, there are many restrictions in determining the member size of the scaffold due to restrictions on the cage size and allowable weight of the elevator installed inside the cargo hold. Changes in the location and arrangement of members are inevitably required, and compatibility may be difficult with only the existing scaffolding members.

In addition, the scaffold structure in the prior art is a structure that is prone to torsion or bending, and there are many restrictions on the installation and operation of machine automation equipment. There is a high risk of accidents due to falls.

The present invention modularizes a part of the scaffold structure installed inside the cargo hold for the construction work of the insulation layer of the LNG cargo hold, thereby reducing the number of hours of work of the operator during the installation or dismantling of the scaffold structure and shortening the schedule for the installation of the insulation layer An object of the present invention is to provide a scaffold structure for an LNG cargo hold insulation operation, and a method for installing and dismantling the scaffold structure.

According to one aspect of the present invention, as a scaffold structure installed on the inner wall of the cargo hold for the construction work of the insulation layer inside the cargo hold, it is spaced apart from the corner of the cargo hold inner space and has a plurality of posts on the upper or lower part. a standard module that is combined to form a plurality of layers; a transverse cantilever module coupled to one side of the standard module and disposed adjacent to a port side or starboard side wall inside the cargo hold from a corner of the cargo hold; And a scaffold structure comprising a longitudinal cantilever module coupled to the other side of the standard module so as to be adjacent to the front side or stern side wall inside the cargo hold from the corner of the cargo hold may be provided.

In order to prevent bending and torsional deformation of the scaffold structure, one or more reinforcing truss units coupled to the standard module and the transverse cantilever module may be further included.

In addition, the standard module, a pair of main frames provided to be spaced apart from each other in one direction; and a pair of connecting frames coupled to both ends of the main frame to integrally connect the pair of main frames.

In addition, the transverse cantilever module may include a pair of first sub-frames spaced apart from each other in one direction; and a plurality of first sub-frames connected to each other between the pair of first sub-frames to be integrated, and a plurality of first sub-frames are coupled along the longitudinal direction of the first sub-frames to support the scaffold plate. It may include a support member.

In addition, the longitudinal cantilever module may include: a pair of second sub-frames having a shorter length than the first sub-frame and spaced apart from each other; an intermediate support formed horizontally with the pair of second sub-frames in the center between the pair of second sub-frames; and a plurality of second support members connecting the pair of second sub-frames and the intermediate support to support the scaffold plate.

In addition, the reinforcing truss portion may include: a horizontal reinforcing member spaced apart from the connecting frame and the first supporting member downwardly and extending long in a horizontal direction; and a plurality of diagonal reinforcements connecting the horizontal reinforcement and the connecting frame or the horizontal reinforcement and the first support member.

In addition, it may further include a diagonal brace connecting any one of the plurality of standard modules and the other standard module positioned above or below in an oblique direction.

In addition, by connecting between the transverse cantilever module and the longitudinal cantilever module, it may further include a plurality of segment members disposed adjacent to the corner portion of the cargo hold.

In addition, each end of the plurality of segment members has a flange shape, and any one of the plurality of segment members is bolted against the flange to the adjacent segment member, the transverse cantilever module, or the longitudinal cantilever module. can be contracted.

In addition, each of the plurality of segment members may be provided as a steel pipe having any one of a straight shape, an L shape, and an F shape.

In addition, in order to prevent deflection of the plurality of segment members, it may further include an anti-sag post coupled to one side of the plurality of segment members or the transverse cantilever module.

According to another aspect of the present invention, there is provided a method for installing a scaffolding structure installed on an inner wall of a cargo hold for construction of an insulation layer inside a cargo hold, the method comprising: installing a standard module at a position spaced apart from a corner of the cargo hold; installing a transverse cantilever module adjacent to the port side or starboard side wall inside the cargo hold from the corner of the cargo hold at one side of the standard module; and coupling the longitudinal cantilever module to the other side of the standard module so as to be adjacent to the wall on the bow or stern side inside the cargo hold from the corner of the cargo hold.

The step of installing the standard module includes: installing one or more reinforcing truss parts to prevent bending and torsional deformation of the standard module; and coupling a plurality of posts to the upper or lower portions of the standard module.

The method may further include installing a plurality of segment members so as to connect between the transverse cantilever module and the longitudinal cantilever module to be adjacent to the corner of the cargo hold.

In addition, the installing of the plurality of segment members may include: connecting the segment member, the transverse cantilever module, or the longitudinal cantilever module disposed adjacent to any one of the plurality of segment members; and coupling an anti-sag post to one side of the plurality of segment members or the transverse cantilever module to prevent deflection of the plurality of segment members.

The present invention enlarges a part of the scaffold structure installed inside the cargo hold in the form of a module for the construction work of the insulation layer of the LNG cargo hold, thereby reducing the number of hours of work for the operator during the installation or dismantling of the scaffold structure and shortening the schedule for the installation of the insulation layer inside the cargo hold It can have a possible effect.

In addition, each standard module and cantilever module, which have been enlarged in module type, can be easily dismantled using separate dismantling means. It can have beneficial effects that can prevent musculoskeletal disorders and reduce the risk of various safety accidents.

In addition, each of the plurality of standard modules and the plurality of cantilever modules has a truss structure, which not only makes assembly and installation easier through weight reduction, but also improves the structural stability of the scaffold structure against vertical bending or torsional deformation. can have the effect of being

In addition, through the infill adjustment unit that connects between any one of the plurality of cantilever modules and the other cantilever module disposed adjacently, it is possible to continuously use the standard module and the cantilever module modularized to a certain size even if the size of the cargo hold is different. It can serve as a buffer by changing the length of a plurality of spacing adjusting members so as to be able to do so, and can be easily applied interchangeably to other ships.

Furthermore, by additionally installing the anti-sag post and the reinforcing truss in the corner region of the cargo hold, which is structurally prone to torsion or bending, it can have the effect of preventing deformation of the scaffold structure or sagging of the free end.

1 is a view schematically showing the structure of a general cargo hold.
2 is a view schematically illustrating a scaffold structure for an LNG cargo hold insulation operation according to an embodiment of the present invention.
3 is a view schematically showing a cross-section of a central part of a cargo hold in which a transfer means for dismantling a scaffold structure for an LNG cargo hold insulation work is installed according to an embodiment of the present invention.
4 is a perspective view showing a modified example of the transfer means shown in FIG. 3 .
5 is a view showing that the rotation preventing means is additionally installed in the transfer means shown in FIG.
6 is a perspective view showing a modified example of the transfer means shown in FIG. 5 .
7 is a view for explaining a method of dismantling the scaffold structure using the transfer means shown in FIG.
8 is a perspective view showing the main configuration of a scaffold structure for insulation work of an LNG cargo hold according to an embodiment of the present invention.
FIG. 9 is a diagram illustrating a schematic side view of FIG. 8 .
FIG. 10 is an enlarged view of area 'A' of FIG. 8 .
FIG. 11 is an enlarged view of area 'B' of FIG. 8 .
FIG. 12 is an enlarged view of area 'C' of FIG. 8 .
13 is a perspective view illustrating a state in which the standard modules shown in FIG. 8 are stacked.
14 is a view illustrating a side view of FIG. 13 .
15 is a view for explaining a part of the dismantling process of the scaffold structure for the LNG cargo hold insulation work according to an embodiment of the present invention.
FIG. 16 is a diagram schematically illustrating a cross-section taken along line X-X' of FIG. 3 .
FIG. 17 is a perspective view showing the scaffold structure installed in the corner of the cargo hold internal space based on the plane of the scaffold structure shown in FIG. 16 .
18 is a perspective view showing the rear surface of the scaffold structure shown in FIG. 17 .
19 is an enlarged view of area 'D' shown in FIG. 18 .

In order to fully understand the present invention, the operational advantages of the present invention, and the objects achieved by the practice of the present invention, reference should be made to the accompanying drawings illustrating preferred embodiments of the present invention and the contents described in the accompanying drawings.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. First of all, it should be noted that in adding reference numerals to the components of each drawing, the same components are given the same reference numerals as much as possible even though they are indicated on different drawings. In addition, in describing the present invention, if it is determined that a detailed description of a related known configuration or function may obscure the gist of the present invention, the detailed description thereof will be omitted. In addition, preferred embodiments of the present invention will be described below, but the technical spirit of the present invention is not limited thereto and may be variously implemented by those skilled in the art without being limited thereto.

2 is a view schematically showing a scaffold structure for an LNG cargo hold insulation work according to an embodiment of the present invention, and FIG. 3 is a transport means for dismantling the scaffold structure for an LNG cargo hold insulation work according to an embodiment of the present invention. It is a view schematically showing a cross section of the central part of the cargo hold to be installed, and FIG. 4 is a perspective view showing a modified example of the transport means shown in FIG. 3 .

In addition, Figure 5 is a view showing that the rotation preventing means is additionally installed in the transfer means shown in Figure 3, Figure 6 is a view showing a modified example of the transfer means shown in Figure 5 in a perspective view, Figure 7 is It is a view for explaining a method of dismantling the scaffold structure using the transfer means shown in FIG. 5 .

First, based on the cross-section of the cargo hold shown in FIGS. 2 to 3 , a scaffold structure for insulating an LNG cargo hold according to an embodiment of the present invention will be described.

The scaffold structure for the insulation work of the LNG cargo hold according to an embodiment of the present invention is a scaffold structure for the construction work of the insulation layer inside the cargo hold 10. Based on the cross section of the cargo hold 10 shown in FIGS. 2 to 3, the cargo hold (10) A main structure (MS) disposed adjacent to each of both side walls of the interior to form a plurality of layers, a platform structure (350) extending long in the transverse direction between the main structures (MS), and a cargo hold (10) ) may include a supporting structure 370 installed on the inner bottom surface to support the main structure MS.

The main structure MS of this embodiment, as shown in FIGS. 2 to 3 , a plurality of standard modules 100 and a plurality of standard modules 100 coupled to one side or the other side of each It may include a cantilever module (Cantilever module) 200 of.

In this embodiment, each of the plurality of standard modules 100 and the plurality of cantilever modules 200 is provided by being enlarged in a module type, and using a separate dismantling means (mobile cart Mc) A dismantling operation may be carried out.

In the standard module 100, a plurality of posts 310 are coupled to the upper or lower portions at positions spaced apart from both wall surfaces inside the cargo hold 10 to form a plurality of layers, and a cantilever module to be described later ( 200) can serve as structural support.

In this embodiment, at least some of the plurality of standard modules 100 may have a truss structure so as to be able to achieve weight reduction and to sufficiently withstand vertical bending deformation by securing structural stability.

The post 310 is coupled to both ends of the standard module 100 and may extend to the upper or lower portion of the standard module 100, one side or the other side of each of the plurality of standard modules 100 and the plurality of standard modules 100 The plurality of cantilever modules 200 coupled to the poles 310 may form a plurality of layers at regular intervals in the vertical direction inside the cargo hold 10 by the posts 310 .

In the scaffold structure for LNG cargo hold insulation work according to an embodiment of the present invention, the number of floors (for example, change from 9th to 10th) or post 310 according to the height of the cargo hold 10 where the scaffolding structure is installed By increasing or decreasing only the length of , it can have an effect that can be easily applied to other ships.

On the other hand, the main structure MS of this embodiment, as shown in FIGS. 2 to 3, another standard module connected to any one of the plurality of standard modules 100 forming a plurality of layers and upper or lower portions It may further include a diagonal brace (330) for connecting (100) in an oblique direction.

The diagonal brace 330 may serve to minimize distortion and deformation of the entire main structure MS including the plurality of standard modules 100 and the plurality of cantilever modules 200 , and the main structure together with the posts 310 . (MS) can increase the structural rigidity and strength.

The cantilever module 200 is coupled to one side or the other side of the standard module 100 so as to be adjacent to both side walls of the cargo hold 10 to have a cantilever shape without coupling of the post 310, and the inner wall of the cargo hold 10 It can be provided as the main place where the installation work of the insulation insulation of the

In addition, at least a portion of the plurality of cantilever modules 200 may have a truss structure to reduce weight and improve structural stability, similar to the standard module 100 .

The scaffold structure for LNG cargo hold insulation work according to an embodiment of the present invention enlarges a part of the scaffold structure in the form of a module, thereby reducing the number of working hours of the operator during installation or dismantling of the scaffold structure and schedule for the installation of the insulation layer inside the cargo hold 10 may have the effect of shortening the

In addition, it can have an advantageous effect of minimizing the operator's manual work and handling of heavy objects in the process of installing or dismantling the scaffold structure, thereby preventing the operator's musculoskeletal disease and reducing the risk of various safety accidents.

The platform structure 350 is formed to extend long in the transverse direction between the main structures MS and is provided in the form of a bridge having a long span without a separate lower support structure, and the cargo hold 10 inside Insulation materials for the insulation layer construction may be stored and loaded, or provided as a place where pre-processing operations may be performed.

The platform structure 350, an upper bridge deck 351 disposed between the uppermost layers of the main structure MS forming a plurality of layers, and a lower bridge disposed under the upper bridge deck 351 A lower bridge deck 353 may be included.

2 to 3, the main structure (MS) of this embodiment is the bottom surface of the cargo hold 10 in the vertical direction inside the cargo hold 10 by the combination of a plurality of standard modules 100 and the posts 310. Including 10 layers may be formed, and the upper bridge deck 351 and the lower bridge deck 353 may be disposed side by side in the transverse direction on the uppermost tenth and third floors of the main structure MS, respectively.

Here, the lower bridge deck 353 is arranged in parallel with the third floor of the main structure MS, and access to the side opening 10a (see FIG. 7 ) provided on one side wall of the cargo hold 10 is possible, so that the scaffold structure During installation or dismantling work, the plurality of standard modules 100 and the plurality of cantilever modules may serve as a logistics transfer platform capable of transporting the plurality of cantilever modules to the outside of the cargo hold 10 .

The supporting structure 370 is installed on the inner floor surface of the cargo hold 10 to support the main structure MS, and may include a plurality of support units 371 supported on the inner floor surface of the cargo hold 10 . .

Each of the plurality of support units 371 may be provided to support the main structure MS by being primarily installed on the inner floor surface of the cargo hold 10 (see FIG. 2 ), and construction of an insulating layer on the inner floor surface of the cargo hold 10 . After this is completed, it may have a configuration that is supported (see FIG. 3) secondary to the heat insulating layer formed on the inner bottom surface of the cargo hold 10.

Here, the plurality of support units 371 have their respective heights so that the entire load of the scaffold structure including the main structure MS can be equally transmitted to the inner floor of the cargo hold 10 or the heat insulation layer installed on the floor. is adjusted, it is possible to prevent damage to the insulation layer due to an excessive load on the scaffold structure.

In the present embodiment, the installation position of the supporting structure 370 may be provided to be flexibly adjusted according to the size of the cargo hold 10 or the insulation system installed in the cargo hold 10 .

On the other hand, in the scaffold structure for insulation work of an LNG cargo hold according to an embodiment of the present invention, the main structure MS and the platform structure 350 are connected at both lateral ends of the platform structure 350 , but the main structure MS and the platform A lateral distance adjusting unit 390 for adjusting the distance between the structures 350 may be further included.

The lateral distance adjusting unit 390 includes a plurality of distance adjusting members 391 connecting the main structure MS and the platform structure 350 in a horizontal or diagonal direction, as shown in FIGS. 2 to 3 . may be included, and the lateral distance between the main structure MS and the platform structure 350 may be adjusted by changing the length of each of the plurality of distance adjusting members 391 .

In this embodiment, it may be difficult to modularize between the main structure MS and the platform structure 350 due to structural characteristics. It can be installed or dismantled.

In the scaffold structure for insulation work of an LNG cargo hold according to an embodiment of the present invention, a lateral distance adjusting unit 390 is provided between the main structure MS and the platform structure 350 so that the size of the cargo hold 10 is applied differently. By changing the length of each of the plurality of distance adjusting members 391, it is possible to continuously use the standard module 100 and the cantilever module 200 that are modularized to a certain size, and can be easily interchanged with other ships.

Hereinafter, based on the cross-section of the cargo hold shown in FIGS. 2 to 3, a method for installing a scaffold structure according to an embodiment of the present invention will be briefly described.

The installation method of the scaffold structure for the construction work of the insulation layer inside the cargo hold according to this embodiment includes the steps of installing the supporting structure 370 on the inner bottom surface of the cargo hold 10 , and a plurality of layers on the supporting structure 370 . It may include installing a main structure (MS) having a truss structure between the main structures (MS) and installing a platform structure 350 extending long in the lateral direction.

In this embodiment, in the step of installing the main structure MS, the plurality of posts 310 are coupled to the upper or lower portions of the plurality of standard modules 100 at positions spaced apart from both inner wall surfaces of the cargo hold 10 . Step, and installing a diagonal brace 330 connecting one of the plurality of standard modules 100 and the other standard module 100 connected to the upper or lower portion in an oblique direction to each other, and a plurality of standard modules ( 100) It may include the step of installing a plurality of cantilever modules 200 so as to be adjacent to both inner wall surfaces of the cargo hold 10 from one side or the other side, respectively.

On the other hand, as shown in FIG. 3 , the scaffold structure for the LNG cargo hold insulation work according to an embodiment of the present invention includes a transport means 400 installed in the upper center of the cargo hold 10 for dismantling the scaffold structure, and the transport It may further include a module landing unit 500 provided as a landing zone of the plurality of standard modules 100 and the plurality of cantilever modules 200 when dismantling the scaffold structure using the means 400 .

In this embodiment, the module landing unit 500 is a standard module disposed on both side walls of the main structure MS, that is, the cargo hold 10, based on the central cross-section of the cargo hold 10 shown in FIG. 3 . It is installed to face the center of the cargo hold 10 from 100 may form a plurality of layers.

Here, the module landing unit 500, similar to the main structure (MS), a plurality of standard modules 100 and the posts 310 and diagonal braces 330 coupled to the upper or lower portions of the standard module 100 . can be composed of

Hereinafter, with reference to FIGS. 3 to 7, the conveying means 400 of this embodiment will be described in detail.

As shown in FIG. 3 , the transport means 400 is installed in the upper center of the cargo hold 10 and connects the plurality of standard modules 100 and the plurality of cantilever modules 200 to the lower bridge during dismantling of the scaffold structure. As provided for transport to the deck 353, the module transport unit 410, which is located in the upper center of the cross section of the cargo hold 10 and includes a plurality of monorails 413 (Monorail), and the module transport unit 410 in the cargo hold (10) may include a connecting mast portion 430 for connecting to the upper trunk deck (Trunk deck) (Td).

The module transfer unit 410 is connected to the connection mast unit 430 to lower the plurality of standard modules 100 and the plurality of cantilever modules 200 to the lower portion of the cargo hold 10 , or vice versa, the upper portion of the cargo hold 10 . It can play a role in elevating.

Specifically, the module transfer unit 410, the monorail platform 411 disposed on the upper bridge deck 351 in the interior of the cargo hold 10, and the monorail platform 411 from the lower part of the monorail platform 411 longitudinal direction It may include a plurality of trolley hoists 415 that are provided to be slidable with the .

The monorail platform 411 may be provided by welding or bolting a plurality of steel pipes in the form of a round or square pipe in horizontal, vertical and oblique directions.

The monorail platform 411 of this embodiment may be pre-installed inside the uppermost layer of the scaffold structure during the construction of the insulation layer inside the cargo hold 10 .

Here, the transfer means 400 elevates the module transfer unit 410 installed in the interior of the cargo hold 10 , that is, on the upper bridge deck 351 , and connects to the connection mast 430 . more can be provided.

As an example, the lifting means may be a plurality of wires (Wire) (W) (refer to FIG. 4 ) connected to or supported by a connection mast part 430 to be described later, or a hoist.

The monorail platform 411 may be connected to the connecting mast 430 by raising the monorail platform 411 by the above-described elevating means during dismantling of the scaffolding structure, and the monorail platform 411 is a scaffolding by the elevating means. After the dismantling of the structure is completed, it may be lowered to the lower part of the cargo hold 10 .

Referring to FIG. 3, the module transfer unit 410 of this embodiment is illustrated that one trolley hoist 415 is installed on both sides in the longitudinal direction of the monorail platform 411, but the present invention is not limited thereto, In order to shorten the dismantling time of the scaffold structure, it may be preferable to provide a plurality of each on both sides of the monorail platform 411 .

As an example, as shown in FIG. 4 , the monorail platform 411 may be formed to have a predetermined width in the longitudinal and transverse directions of the cargo hold, and in the lower part of the monorail platform 411 in the longitudinal and transverse directions. The four monorails 413 may be installed by being spaced apart from each other, and the trolley hoist 415 may be slidably provided on each of the plurality of monorails 413 .

In this embodiment, since four monorails 413 are installed on the monorail platform 411, the dismantled plurality of standard modules 100 or the plurality of cantilever modules 200 are four at once to the lower bridge deck 353. It can be lowered, thereby, can have the effect of shortening the dismantling work schedule of the scaffold structure.

The trolley hoist 415 provided on each of the plurality of monorails 413 is individually controlled to elevate structures such as the standard module 100 or the cantilever module 200 to the lower or upper part of the cargo hold 10. , in order to prevent the load on the monorail platform 411 from being biased to one side, it may be desirable to control so that the lifting operation is simultaneously performed on each monorail 413 .

The connection mast part 430 is for supporting the module transfer part 410, and extends from the inside of the gas dome (Gd) formed in the cargo hold 10 upper trunk deck Td to the inside of the cargo hold 10 can be installed.

Specifically, the connection mast part 430 is, as shown in FIGS. 3 to 4, a plurality of base mast members 431 disposed elongated in the longitudinal direction of the gas dome inside the gas dome Gd, and, A plurality of connecting mast members 433 connecting a plurality of mast members in horizontal, vertical and diagonal directions, and a plurality of base masts extending radially in the inner direction of the cargo hold 10 from the lower end of the module transfer unit 410 of the monorail platform It may include a plurality of extension mast members 435 (see FIG. 3 ) connected to the 411 .

Each of the plurality of base mast members 431, the upper end and the lower end, respectively, may be welded or bolted to the inside of the gas dome Gd and the upper one side of the cargo hold 10, or to the hatch of the gas dome Gd. The upper end of the base mast member 431 may be coupled.

At this time, it may be preferable that the plurality of base mast members 431 are coupled so as not to interfere with hatch opening of the gas dome Gd.

In installing the connecting mast part 430 in the inner region of the gas dome Gd, a separate quay wall crane (not shown) provided outside the cargo hold 10 may be used to insert and install the gas dome Gd. And, when the dismantling of the scaffold structure is completed, the module transfer unit 410 may be separated from the connection mast unit 430 and moved to the outside of the gas dome Gd using a quay wall crane again.

On the other hand, the transport means 400 of this embodiment has a structure in which the monorail platform 411 is supported by the connection mast part 430, but may be vulnerable to stress applied in a direction eccentric from the center of the monorail platform 411. there is.

When the load is biased to one side and acts on the monorail platform 411, the monorail platform 411 may be tilted or rotated in the direction in which the load is applied, and the connecting mast part 430 connected to the monorail platform 411 is There is a risk of being damaged or the monorail platform 411 is separated from the connection mast 430 and falls downward.

The transport means 400 of this embodiment is formed to extend upward from the upper part of the monorail platform 411 in order to prevent the monorail platform 411 from being tilted or rotated, as shown in FIGS. 5 to 6 , and the upper end is formed A rotation preventing means 450 in close contact with the upper inner wall of the cargo hold 10 may be additionally installed.

The rotation preventing means 450 may be formed of a plurality of contact members 451 that are installed to be spaced apart from each other in the longitudinal and lateral directions on the monorail platform 411 .

Each of the adhesion members 451 can prevent the monorail platform 411 from being tilted or rotated by pressing the upper inner wall of the cargo hold 10 when an asymmetric load is applied to the monorail platform 411 .

Here, a heat insulation layer is formed on the upper inner wall of the cargo hold 10. Since there is a risk that the heat insulation layer may be damaged when a local stress is applied to the heat insulation layer, the upper end of each adhesion member 451 has a wider cross-section than the width of the lower end, so that the cargo hold By making the surface contact the upper inner wall or heat insulating layer of 10 , it is possible to minimize damage to the inner wall or heat insulating layer of the cargo hold 10 due to the pressing force of the anti-rotation member 450 .

In the present embodiment, each of the plurality of contact members 451 may have a cylindrical or polygonal column shape, and it may be preferable to be provided with a pipe-shaped steel pipe in the same manner as the monorail platform 411 .

In addition, when the contact member 451 is provided in the form of a hollow pipe, it is preferable that a separate plate (unsigned) having a predetermined width is coupled to the upper end of the rotation preventing member 450 through bolt fastening or welding method, etc. can do.

Referring to FIG. 6 , the adhesion member 451 of this embodiment is installed one in each corner area of the monorail platform 411 and it is shown that a total of four are provided, but the installation position or number of the adhesion member 451 is accordingly It is not limited, and a plurality may be installed at each tip of the monorail platform 411 , and if it is possible to prevent inclination or rotation of the monorail platform 411 , it may be applicable to various other structures.

Hereinafter, a method of dismantling the scaffold structure using the above-described transfer means 400 will be briefly described.

In the method of dismantling the scaffold structure for the construction work of the insulation layer inside the cargo hold according to this embodiment, the transfer means 400 for transferring the plurality of standard modules 100 and the plurality of cantilever modules 200 to the upper center of the cargo hold 10 . ), connecting the standard module 100 or the cantilever module 200 to the transport means 400, and attaching the standard module 100 or the cantilever module 200 to the lower bridge deck of the platform structure 350 ( 353), the standard module 100 and the cantilever module 200 transferred to the lower bridge deck 353 are transported to the outside of the cargo hold 10 through the side opening 10a provided on one side of the cargo hold 10 It may include the step of moving to.

In the step of installing the transfer means 400, the step of installing the connection mast 430 inside the gas dome Gd of the cargo hold 10, and a separate elevating means such as a wire (W), such as a plurality of It may include the step of connecting the module transfer unit 410 having the monorail 413 to the connection mast unit 430 .

In the step of connecting the module transfer unit 410, a lifting means for elevating the module transfer unit 410 is installed at the lower part of the connection mast 430, and then disposed on the uppermost footboard among the footrests installed inside the cargo hold 10 By elevating the monorail platform 411 , it can be connected to the connection mast 430 .

Prior to the step of transferring the standard module 100 or the cantilever module to the lower bridge deck 353, the plurality of standard modules 100 and the plurality of cantilever modules 200 are transported using a separate mobile cart (Mc). (400) may further include the step of moving to the center of the cross-section of the installed cargo hold (10).

That is, a part of the scaffolding structure is dismantled from the inside of the cargo hold 10 , and the dismantled standard module 100 or cantilever module 200 is moved to the module landing unit 500 to move the trolley hoist 415 of the transport means 400 . ) can be connected with

In the dismantling method of the scaffold structure according to an embodiment of the present invention, after the dismantling of the scaffold structure using the conveying means 400 is completed, the module conveying unit 410 is separated from the connecting mast unit 430 and the cargo hold 10 . It may further include the step of moving to the outside of.

In other words, in the step of separating the module transfer unit 410, the module transfer unit 410 is moved to the lower bridge deck 353 by using a lifting means installed under the connection mast 430, and the lower bridge deck 353. After disassembling the module transfer unit 410 on the top, it can be moved to the outside of the cargo hold 10 through a side opening provided on one side of the cargo hold 10 .

In addition, the connection mast unit 430 from which the module transfer unit 410 is separated may be moved to the outside of the gas dome Gd using a quay wall crane.

In the method of dismantling the scaffold structure according to an embodiment of the present invention, it is possible to transfer a part of the scaffold structure enlarged in the form of a module using the module transfer unit 410 installed inside the cargo hold 10, so that the dismantling work of the scaffold structure is performed. The time required can be greatly reduced.

8 is a perspective view showing the main configuration of a scaffold structure for insulation work of an LNG cargo hold according to an embodiment of the present invention, FIG. 9 is a schematic side view of FIG. 8, and FIGS. 10 to 12 are Regions 'A', 'B', and 'C' of FIG. 8 are enlarged views, respectively.

13 to 14 are views illustrating a stacked state of the standard modules shown in FIG. 8, and FIG. 15 is a view illustrating a part of the dismantling process of a scaffold structure for insulation work of an LNG cargo hold according to an embodiment of the present invention. It is a drawing, and FIG. 16 is a view schematically showing a planar arrangement structure (cross section X-X' in FIG. 3) of a scaffold structure for insulation work of an LNG cargo hold according to an embodiment of the present invention.

As described above, the scaffold structure for insulation work of an LNG cargo hold according to an embodiment of the present invention is a scaffold structure for construction of an insulation layer inside the cargo hold 10, and is spaced apart from the inner wall surface of the cargo hold 10 to form a plurality of layers. It may include a plurality of standard modules forming the 100 and a plurality of cantilever modules coupled to each of the plurality of standard modules 100 so as to be adjacent to the inner wall surface of the cargo hold 10 .

Hereinafter, the plurality of standard modules 100 and the plurality of cantilever modules will be described in detail.

As shown in FIG. 8 , the standard module 100 includes a pair of main frames 110 provided to be spaced apart from each other in one direction, and a pair of main frames 110 coupled to both ends of the main frame 110 . ) and a pair of connecting frames 130 that integrally connect them, and a plurality of connections installed in parallel with the connecting frame 130 while being spaced apart from each other in the longitudinal direction of the main frame 110 between the pair of main frames 110 . A member 150 may be included.

A pair of main frames 110 and a pair of connecting frames 130 are combined to form a rectangular frame, and a footrest plate ( P1) may be additionally installed.

The scaffold plate P1 may be made of a material such as plywood or steel plate, and it may be preferable to be fixedly installed on the standard module 100 and provided integrally with the standard module 100. there is.

Here, the pair of main frames 110, as shown in FIGS. 8 to 9, can have a truss structure so as to be able to achieve weight reduction and to sufficiently withstand vertical bending deformation by securing structural stability. In addition, each of the pair of connecting frames 130 and the plurality of connecting members 150 may be provided as a steel pipe (or square pipe) in the form of a square pipe having a square cross section.

Specifically, the main frame 110 includes a pair of vertical members 111 coupled to the posts 310 and a first horizontal member in which a pair of vertical members 111 extend horizontally in a direction facing each other. 112 and the second horizontal member 113 having the same length as the first horizontal member 112 and spaced downward from the first horizontal member 112 so that both ends are connected to the outer circumferential surface of the pair of vertical members 111 ) and a plurality of inclined members 114 formed between the first horizontal member 112 and the second horizontal member 113 may be included.

The vertical member 111 may be provided as a steel pipe in the form of a circular pipe having the same outer diameter as the post 310 , and a frame coupling hole (Coupler) C1 is formed on one side of the outer circumferential surface of the vertical member 111 to form a pair of Ends of the connection frame 130 may be coupled to each other by a bolt fastening method.

In addition, the plurality of connection members 150, similar to the connection frame 130, a pair of main frames 110 are formed to be spaced apart from each other along the longitudinal direction of the first horizontal member 112 in a direction facing each other. It may be coupled to a plurality of connecting rod couplers (unsigned) by a bolt fastening method.

In this embodiment, it is preferable that the vertical member 111, the first horizontal member 112, the second horizontal member 113, and the inclined member 114 are integrally connected through a bolt fastening method or a welding method. can

Except for the vertical member 111, the first horizontal member 112, the second horizontal member 113, and the plurality of inclined members 114, the same as the connection frame 130 or the connection member 150, have a rectangular cross section. It may be preferable to be provided with a steel pipe in the form of a square pipe having.

Here, the first horizontal member 112 , the second horizontal member 113 , and the inclined member 114 may have different cross-sectional areas. For example, the first horizontal member 112 may have the same cross-sectional area as the connection frame 130 or the connection member 150 , and the second horizontal member 113 and the inclined member 114 may have the same cross-sectional area as the first horizontal member ( 112) may be provided as a steel pipe having a smaller cross-sectional area.

Referring to FIG. 9 , the main frame 110 of this embodiment has an inner diameter corresponding to the outer diameter of the post 310 by expanding the diameter at the upper end or the lower end of the vertical member 111 , and one side of the post 310 inside It may further include a socket part 115 into which the end is inserted and installed, and one end of the post 310 is inserted into the socket part 115 and the bolt is fastened in a direction perpendicular to the outer peripheral surface of the socket part 115 . By doing so, the post 310 can be fixed to the standard module 100 .

The standard module 100 of this embodiment, as shown in FIGS. 13 to 14, may be stacked in multiple stages through the socket part 115 in a state separated from the post 310, and accordingly, the installation of the scaffold structure And it is possible to minimize the loading space of the standard module 100 in the yard during the dismantling operation.

As shown in FIG. 10 , the main frame 110 of this embodiment protrudes on the outer peripheral surface of the pair of vertical members 111 on the opposite side in the direction in which the pair of vertical members 111 face each other in any one of the pair of vertical members 111 , as shown in FIG. It may further include a pair of lateral flange portions 117 formed to have a flange shape at the distal end.

A pair of lateral flange portions 117 are spaced apart from an upper protrusion 117a protruding from the upper outer circumferential surface of the vertical member 111 and the upper protrusion 117a downward to protrude on the lower outer circumferential surface of the vertical member 111 . It may include a formed lower protrusion 117b.

Here, each of the upper protrusion 117a and the lower protrusion 117b is a separate plate (unsigned) having a predetermined width at the distal end, similar to the contact member 451 of the transfer means 400, is bolted or welded. may be joined to form a flange.

In addition, although not shown in the drawing, the main frame 110 of this embodiment is an outer circumferential surface opposite to the direction in which the connecting frame 130 is coupled in the vertical member 111 , that is, a transverse plane from the outer circumferential surface of the vertical member 111 . It may further include a pair of longitudinal flange portions (unsigned) which are formed to protrude at a position perpendicular to the branch 117 and have a flange shape at the distal end.

In this embodiment, the transverse flange portion 117 and the longitudinal flange portion are provided to couple the cantilever module to the standard module 100, and a detailed coupling structure with the cantilever module will be described later.

On the other hand, in the scaffold structure for insulation work of an LNG cargo hold according to an embodiment of the present invention, a safety handrail 170 may be installed in accordance with occupational safety and health standards (Rule 13 regarding occupational safety and health standards), this The safety handrail 170 of the embodiment may be installed in a folding type on one side of the main frame 110 or the connection frame 130 of the standard module 100, and as shown in FIG. 13, the standard module ( 100) may be configured to be placed on the upper surface of the footrest plate of the standard module 100 by folding the safety handrail 170 during multi-stage loading.

Referring back to FIG. 9 , one end of the post 310 is inserted and installed inside the socket unit 115 to extend to the upper or lower portion of the standard module 100 , and a plurality of standard The plurality of cantilever modules coupled to one side of each of the module 100 and the plurality of standard modules 100 may form a plurality of layers at regular intervals in the vertical direction inside the cargo hold 10 .

Here, at the other end of the post 310 , the arm whose diameter is expanded to have an inner diameter corresponding to the outer diameter of the vertical member 111 , similarly to the socket part 115 formed at one end of the vertical member 111 . The socket part 311 may be formed, and the end of the vertical member 111 may be inserted into the female socket part 311 .

The cantilever module is integrated with a pair of sub-frames provided to be spaced apart from each other and a pair of sub-frames interconnected between the pair of sub-frames, and a plurality of sub-frames are coupled along the longitudinal direction of the sub-frames and are fixed to the upper part It may include a plurality of support members for supporting the scaffold plate.

Here, the plurality of cantilever modules are transverse cantilever modules disposed adjacent to the port side or starboard side wall of the cargo hold 10 with respect to the plane of the cargo hold 10 shown in FIG. 16 . ) 200 and the cargo hold 10 may be divided into a longitudinal cantilever module (Longitudinal cantilever module) 700 arranged to be adjacent to the front side or stern side wall inside the cargo hold (10).

In describing the cantilever module of this embodiment, the transverse cantilever module 200 will be described first with reference to FIGS. 8 to 9 , and the longitudinal cantilever module 700 will be described later.

Referring back to FIG. 8 , the transverse cantilever module 200 includes a pair of first sub-frames 210 provided to be spaced apart from each other in one direction and a pair of first sub-frames 210 between the pair of first sub-frames 210 . It may include a plurality of first support members 230 for interconnecting the first sub-frame 210 to be integrated.

In the transverse cantilever module 200 of this embodiment, similarly to the standard module 100 , a footrest plate P2 is provided on the upper surfaces of the pair of first sub-frames 210 and the plurality of first support members 230 . It may be fixedly installed, and may be provided integrally with the transverse cantilever module 20 .

The pair of first sub-frames 210 may have a truss structure to reduce weight and improve structural stability, similar to the main frame 110 of the standard module 100, and a plurality of first support members ( 230) each may be provided as a steel pipe in the form of a square pipe having a square cross section.

The first sub-frame 210 includes a first upper streak member 211 extending long in the horizontal direction, a first lower chord member 213 spaced apart from the first upper chord member 211 below, and a first upper chord member. It may include a plurality of first brace members 215 for connecting between the (211) and the first lower side member (213).

The first upper chord member 211 may be provided as a steel pipe in the form of a square pipe having the same cross-sectional area as the first supporting member 230 , and the first lower chord member 213 and the first bracing member 215 include the first upper chord member 215 . It may be provided as a steel pipe in the form of a square pipe having a smaller cross-sectional area than the member 211 .

The plurality of first support members 230 includes a plurality of support couplers C3 formed to be spaced apart from each other along the longitudinal direction of the first upper pole member 211 in the direction in which the pair of first sub-frames 210 face each other. ) can be combined with a bolt fastening method.

In this embodiment, it may be preferable that the first upper and lower chord members 211, the first lower chord members 213, and the plurality of first brace members 215 are integrally connected through a bolt fastening method or a welding method. .

On the other hand, one end of the first upper chord member 211 and the first lower chord member 213 is the upper protrusion 117a and the lower protrusion 117b of the transverse flange portion 117 formed in the main frame 110, respectively. It may have a flange shape corresponding to the end.

In this embodiment, each of the one end of the first upper chord member 211 and the first lower chord member 213 has a flange formed on each of the upper protrusion 117a and the lower protrusion 117b of the transverse flange 117 and It may be preferable that a separate plate (unsigned) having a corresponding width is bolted or welded to form the flange.

That is, in the transverse cantilever module 200 of this embodiment, one end of the first upper chord member 211 and the first lower chord member 213 is connected to an upper protrusion 117a and a lower protrusion ( 117b) can be coupled by bolting the flanges to each other, and the self-weight of the transverse cantilever module 200 provided in the form of a cantilever by this coupling method and the transverse cantilever module ( 200) can not only be transferred to the standard module 100, but also have the effect of minimizing deflection at the end of the lateral cantelever module 200.

At this time, the first lower chord member 213 may be provided to have a shorter length than that of the first upper chord member 211 , and for this reason, the lateral cantilever module 200 has a side surface at its end from top to bottom. It may have a gradually tapering shape.

On the other hand, the main structure MS of this embodiment, with respect to the plane of the cargo hold 10 shown in FIG. 16 , the other transverse cantilever disposed adjacent to any one of the plurality of transverse cantilever modules 200 . A plurality of transverse infill adjustment units 610 provided to connect between the modules 200 and surround the inner wall surface of the cargo hold 10 together with the plurality of transverse cantilever modules 200 may be further included. .

As shown in FIG. 9 , the lateral infill adjustment unit 610 has a bar shape and the pair of first sub-frames 210 face each other in opposite directions. ) may include a plurality of lateral spacing adjusting members 611 coupled to each.

The lateral infill adjustment unit 610 is similar to the distance adjustment member 391 of the lateral distance adjustment unit 390 , each of a plurality of lateral spacing adjustment members 611 to enable installation or disassembly through manual operation of the operator. may be provided as a single item.

That is, the transverse infill adjustment unit 610 of the present embodiment includes a plurality of modules such that the standard module 100 and the transverse cantilever module 200 that are modularized to a certain size can be continuously used even when the size of the cargo hold 10 is applied differently. It can serve as a buffer by changing the length of the transverse spacing adjustment member 611 of dogs, and can be easily interchanged with other ships.

Each of the plurality of lateral spacing adjusting members 611 may be positioned on a longitudinal extension line of each of the plurality of support members installed between the pair of first sub-frames 210 .

In this embodiment, the plurality of lateral spacing adjusting members 611 may be designed to have the same or equivalent strength as the plurality of support members.

12, at both ends of the lateral spacing adjusting member 611, a wedge-type fixing pin 611a may be provided to facilitate dismantling of each of a plurality of spacing adjusting members provided separately, Both ends of the lateral spacing adjusting member may be latched and fixed to the plurality of fixing pin coupling holes C4 formed on the side opposite to the portion where the support coupling hole is formed in the first upper chord member 211 .

At this time, both ends of the diagonal brace 330 to be coupled to the corner where the second horizontal member 113 and the vertical member 111 of the main frame 110 meet and the bracket C5 formed on the outer peripheral surface of the socket part 115, respectively. can

Briefly describing the installation method of the scaffold structure having the above configuration again, as a method of installing a scaffold structure installed on the inner wall of the cargo hold for the construction of the insulation layer inside the cargo hold, spaced apart from the inner wall of the cargo hold 10 A step of installing a plurality of standard modules 100 at a location, a step of forming a plurality of layers by combining a plurality of posts 310 on the upper or lower portions of each of the plurality of standard modules 100 to form a plurality of layers, and a cargo hold 10 coupling the plurality of cantilever modules 200 to each of the plurality of standard modules 100 so as to be adjacent to the inner wall of ) may include installing a plurality of infill adjustment units 610 between them.

In this embodiment, each of the plurality of standard modules 100 and the plurality of cantilever modules, as described above, is provided by being enlarged in a module type, and can be dismantled using a separate dismantling means. .

The dismantling means of this embodiment is, as shown in FIG. 15, a mobile cart having an elevating part having a lifting function on the body part having a driving means so as to be movable within the scaffold structure forming a plurality of layers ( mc).

To describe the standard module 100 as an example, the mobile cart Mc enters the lower part of the standard module 100 to be separated (see Fig. 15 (a)), and the connection member of the standard module 100 ( After lifting 150) (about 200 mm, see (b) of FIG. 15), the socket part 115 and the post 310 of the standard module 100 are separated (refer to (C) of FIG. 15), and the mobile It can be moved to the module landing unit 500 by lowering the standard module 100 to the drivable height of the cart (Mc) (using the lift stroke of the mobile cart (Mc), see (d) of FIG. 15 ).

In the present embodiment, each of the plurality of standard modules 100 and the plurality of cantilever modules that are provided to be enlarged in a module type can be easily dismantled using a dismantling means (mobile cart Mc), and the scaffold structure In the process of installation or dismantling of the equipment, it is possible to minimize the operator's manual work and handling of heavy objects, thereby having the advantageous effect of preventing the operator's musculoskeletal disease and reducing the risk of various safety accidents.

Hereinafter, with reference to FIGS. 2 to 15, a method of dismantling the scaffold structure for the construction work of the insulation layer inside the cargo hold according to an embodiment of the present invention will be briefly described.

As a method of dismantling a scaffold structure installed on the inner wall of a cargo hold for construction of an insulation layer inside a cargo hold, a plurality of standard modules 100 and a plurality of cantilever modules 200 and 700 installed on the inner wall of the cargo hold 10 are Separating the standard module 100 or the cantilever modules 200 and 700 by connecting the standard module 100 or the cantilever modules 200 and 700 to the transport means 400 installed in the upper center of the cargo hold 10 The step of transferring the lower part of the cargo hold 10 and the standard module 100 or the cantilever modules 200 and 700 transferred to the lower part of the cargo hold 10 through the side opening 10a provided on one side of the cargo hold 10 It may include the step of moving to the outside of the cargo hold (10).

In this embodiment, before the step of transferring the standard module 100 or the cantilever modules 200 and 700 to the lower part of the cargo hold 10, the standard module ( It may further include the step of installing the module landing unit 500 to face the central portion of the cargo hold 10 from (100).

Here, the module landing unit 500 may be composed of a plurality of standard modules 100 and a post 310 and a diagonal brace 330 coupled to the upper or lower portions of the standard module 100, as described above, and , the transport means 400 installed in the upper center of the cargo hold 10, specifically, the width in the longitudinal and transverse directions of the monorail platform 411, or the trolley hoist 415 coupled to the monorail platform 411 of It may be of course that the upper area of the module landing unit 500 may be variously changed according to the number.

For example, when the transport means 400 has four trolley hoists 415 (see FIG. 5 or FIG. 7 ), the bow of the module landing unit 500 is based on the plane of the cargo hold shown in FIG. 16 . A plurality of standard modules 100 may be additionally installed on the side or the stern side.

In the step of separating each of the plurality of standard modules 100 and the plurality of cantilever modules 200 and 700, the mobile cart Mc is placed under the standard module 100 or the cantilever modules 200 and 700 to be separated. The step of entering, the step of lifting (Lifting) the standard module 100 or the cantilever module (200, 700) located on the upper part using the mobile cart (Mc), the separated standard module 100 or the cantilever module ( 200 and 700) may include the step of moving the module landing unit 500 installed on both sides of the cross section of the central portion of the cargo hold (10).

In the step of separating each of the plurality of standard modules 100 and the plurality of cantilever modules 200 and 700 , when any one of the plurality of standard modules 100 is separated, a post coupled to the standard module 100 . Separating the 310 may be further included.

On the other hand, the scaffold structure for insulation work of the LNG cargo hold according to an embodiment of the present invention includes a staircase structure 630 and an elevator unit ( 650) may be further included.

In this embodiment, the staircase structure 630 is, as shown in FIG. 16 , a standard module 100 disposed on both sides (left and right side) walls of the central section of the cargo hold 10 among a plurality of standard modules 100. It may be installed between the module and may be positioned close to the landing unit 500, one or more may be installed on the port side and the starboard side inside the cargo hold 10, respectively.

The elevator unit 650 may be installed in the forward direction of some of the plurality of cantilever modules 700 installed on the stern side of the cargo hold 10 with respect to the plane of the cargo hold 10 as shown in FIG. 15 . .

At this time, the elevator unit 650 may be connected to the longitudinal cantilever module 700 to be described later by hanging on the upper trunk deck Td of the cargo hold 10 , and a plurality of installed on the stern side of the cargo hold 10 . Some of the standard modules 100 may be arranged to surround the other side except for one side of the elevator unit 650 connected to the longitudinal cantilever module 700 .

In the scaffold structure for insulation work of an LNG cargo hold according to an embodiment of the present invention, not only the worker can access from the lowest to the top floor of the standard module 100 constituting a plurality of layers through the elevator unit 650, but also the scaffold During the dismantling of the structure, it may be possible to transfer the members provided as a single unit.

Hereinafter, with reference to FIG. 16, the installation method of the scaffold structure of this embodiment will be further described.

As described above, in the method for installing a scaffold structure for a cargo hold internal insulation layer construction work according to an embodiment of the present invention, a plurality of standard modules 100 are installed at positions spaced apart from the inner wall surface of the cargo hold 10 . and coupling the plurality of cantilever modules 200 and 700 to each of the plurality of standard modules 100 so as to be adjacent to the inner wall surface of the cargo hold 10, and adjacent to any one of the plurality of cantilever modules 200 and 700 The method may include installing a plurality of infill adjustment units 610 and 810 between the other cantilever modules that are arranged to be flexible.

The scaffold structure installation method according to the present embodiment includes the steps of installing the module landing unit 500 toward the center of the cargo hold 10 from the standard module 100 disposed in the center of the port side and starboard side walls of the cargo hold 10 . And, in order to allow workers to access the lowest to the uppermost floor of the standard module 100 constituting a plurality of layers, the module landing part ( The step of installing the staircase structure 630 so as to be close to 500) and the elevator part in the bow direction of some of the plurality of cantilever modules 700 installed on the stern side of the cargo hold 10 based on the plane of the cargo hold 10 650) may be further included.

In the step of installing the elevator unit 650 , some of the plurality of standard modules 100 installed on the stern side of the cargo hold 10 surround the other side except for one side of the elevator unit 650 connected to the cantilever module 700 . It may be arranged to wrap.

17 is a perspective view showing the scaffold structure installed in the corner of the cargo hold internal space based on the plane of the scaffold structure shown in FIG. 16, and FIG. 18 is a perspective view of the back side of the scaffold structure shown in FIG. 19 is an enlarged view of the area 'D' shown in FIG. 18 .

The scaffold structure for the LNG cargo hold insulation work according to an embodiment of the present invention is a standard module 100 that is installed to be spaced apart from the corners of the cargo hold 10 internal space with respect to the plane of the cargo hold 10 shown in FIG. 16 . The transverse cantilever module 200 and the longitudinal cantilever module 700 may be installed together on one side and the other side of the .

That is, the scaffold structure for the LNG cargo hold insulation work according to an embodiment of the present invention is spaced apart from the corner of the cargo hold 10 internal space with respect to the plane of the cargo hold 10 shown in FIG. A plurality of posts 310 are coupled to the standard module 100 to form a plurality of layers, and the standard module 100 is coupled to one side of the standard module 100 from the corner of the cargo hold 10 to the port side or The transverse cantilever module 200 disposed adjacent to the starboard side wall, and the other side of the standard module 100 so as to be adjacent to the bow or stern side wall inside the cargo hold 10 from the corner of the cargo hold 10 A longitudinal cantilever module 700 may be included.

In addition, the diagonal brace 330 is equally installed between any one of the plurality of standard modules 100 installed in the corner of the cargo hold 10 and the other standard module 100 positioned at the upper or lower portion. can be

Here, since the standard module 100 and the transverse cantilever module 200 have the same configuration as described above, a detailed description thereof will be omitted and the longitudinal cantilever module 700 will be briefly described first.

As shown in FIG. 18, the longitudinal cantilever module 700 has a shorter length than the first sub-frame 210 of the transverse cantilever module 200 and is provided with a pair of second sub-frames spaced apart from each other ( 710), an intermediate support 750 extending horizontally from the center between the pair of second sub-frames 710 and the pair of second sub-frames 710, and a pair of second sub-frames 710 and a plurality of second support members 750 connecting the intermediate support 750 to each other.

The longitudinal cantilever module 700 of this embodiment, similar to the transverse cantilever module 200 , includes a pair of second sub-frames 710 , an intermediate support 750 , and a plurality of second support members 750 . A scaffold plate may be fixedly installed on the upper surface, and the pair of second sub-frames 710 may have a truss structure to reduce weight and improve structural stability.

The second sub-frame 710, similarly to the first sub-frame 210, may include a second upper chord member 711, a second lower chord member 713, and a plurality of second brace members 715, , the second upper chord member 711 , the second lower chord member 713 , and the plurality of second brace members 715 may be integrally connected through a bolt fastening method or a welding method.

The second upper chord member 711 , the intermediate support 750 , and the plurality of second support members 750 may be provided as a steel pipe in the form of a square pipe having the same cross-sectional area, and the second lower chord member 713 and the plurality of second support members 750 may be provided. The second brace member 715 may be provided as a steel pipe in the form of a square pipe having a smaller cross-sectional area than the second upper pole member 711 .

In addition, the second lower chord member 713 may have a shorter length than that of the second upper chord member 711 , and for this reason, the longitudinal cantilever module 700 has a shape in which the side of the longitudinal cantilever module 700 is tapered from the top to the bottom at the end. can have

A plurality of second support members 750, similar to the first support member 230, along the longitudinal direction of the second upper member 711 in a direction in which the pair of second sub-frames 710 face each other It may be coupled to the formed plurality of support coupling holes (C3) by a bolt fastening method.

In addition, one end of the second upper chord member 711 and the second lower chord member 713 corresponds to the ends of the upper protrusion 117a and the lower protrusion 117b of the longitudinal flange formed on the main frame 110, respectively. It may have a flange shape.

That is, in the longitudinal cantilever module 700 of this embodiment, similar to the transverse cantilever module 200, one end of the second upper chord member 711 and the second lower chord member 713 is attached to a longitudinal flange portion (not shown). By attaching a flange to each of the upper protrusion 117a and lower protrusion 117b in a bolted manner, the self-weight of the longitudinal cantilever module 700 and the operator's load acting on the longitudinal cantilever module 700 are standardized. Not only can it be transferred to the module 100, it can have the effect of minimizing sagging at the end.

The scaffold structure for the LNG cargo hold insulation work according to an embodiment of the present invention is the other one disposed adjacent to any one of the plurality of longitudinal cantilever modules 700 with respect to the plane of the cargo hold 10 shown in FIG. 16 . It may further include a plurality of longitudinal infill adjustment units 810 for connecting between the longitudinal cantilever modules 700 of the.

The longitudinal infill adjustment unit 810 has a bar shape, and the pair of second sub-frames 710 face each other in opposite directions, similarly to the horizontal infill adjustment unit 610 . It may include a plurality of longitudinal spacing adjusting members (unsigned) coupled to each of the frame 710 .

Since the longitudinal infill adjuster 810 has the same configuration and function as the horizontal infill adjuster 610 except for an installation position, a detailed description thereof will be omitted.

As shown in FIGS. 18 to 19 , the scaffold structure for LNG cargo hold insulation work according to an embodiment of the present invention connects between the transverse cantilever module 200 and the longitudinal cantilever module 700 to provide a cargo hold 10 ) may further include a corner connection portion 830 disposed adjacent to the corner portion.

The corner connecting portion 830 of the present embodiment may be formed of a plurality of segment members 831 , 832 , 833 , 834 , and 835 provided as a single unit.

Referring to FIG. 16 , the area in which the corner connection part 830 is disposed is difficult to access by the dismantling means, and it is difficult to modularize due to spatial characteristics, so a plurality of segment members 831 are provided individually through the manual work of the operator. 832, 833, 834, 835) will be installed or dismantled, respectively.

Each of the plurality of segment members 831 , 832 , 833 , 834 , and 835 may have various shapes, such as a straight shape, an L shape, an F shape, etc., as shown in FIGS. 18 to 19 , and the plurality of segment members 830 ) Each end may have a flange shape (refer to reference numerals 831 to 835 in FIG. 19).

Here, it may be preferable that separate plates (unsigned) of the plurality of segment members 831 , 832 , 833 , 834 , and 835 are respectively bolted or welded to each end or both sides to form a flange.

In this embodiment, any one of the plurality of segment members 831 , 832 , 833 , 834 , 835 is an adjacent segment member 831 , 832 , 833 , 834 , 835 or a transverse cantilever module 200 or It may be bolted to the longitudinal cantilever module 700 by buttting the flange (see FIG. 19 ).

On the other hand, the scaffold structure installed in the corner region of the cargo hold 10 is structurally prone to torsion or bending, and the cantilever-shaped transverse cantilever module 200 and the longitudinal cantilever module 700 and the transverse direction Free ends of the plurality of segment members 830 connecting between the cantilever module 200 and the longitudinal cantilever module 700 may be most vulnerable to deflection.

In order to prevent sagging of the plurality of segment members 830, the scaffold structure for LNG cargo hold insulation work according to an embodiment of the present invention includes a plurality of segment members (831, 832, 833, 834, 835) or a transverse cantilever module ( 200) may further include an anti-sag post 850 coupled to one side.

The anti-sag post 850 may have the same outer diameter and shape as the post 310, and at a portion where the anti-sag post 850 is coupled, the vertical member 111 of the main frame 110 and the socket unit 115. Similar to the configuration of , a post connection portion (not indicated) may be additionally formed so that one end of the anti-sag post 850 can be inserted and installed.

In addition, the scaffold structure for insulation work of an LNG cargo hold according to an embodiment of the present invention includes a standard module 100 and a transverse cantilever module 200 to prevent bending and torsional deformation of the scaffold structure at the corner of the cargo hold 10 . ) may further include one or more reinforcing truss portions 870 coupled to it.

The reinforcing truss unit 870 is spaced apart from the lower side of the connection frame 130 and the first support member 230 of the standard module 100 to extend long in the horizontal direction, as shown in FIGS. 17 to 18 . The horizontal reinforcement 871 may include a plurality of diagonal reinforcements 873 connecting the horizontal reinforcement 871 and the connecting frame 130 or the horizontal reinforcement 871 and the first support member 230 .

As an example, as shown in FIG. 18 , two reinforcing truss parts 870 may be installed in the standard module 100 in the corner region of the cargo hold 10 , and one in the transverse cantilever module 200 . of the reinforcing truss unit 870 may be installed.

The horizontal reinforcing material 871 and the plurality of diagonal reinforcing materials 873 may be provided as a square pipe-shaped steel pipe having the same cross-sectional area as the second horizontal member 113 or the lower string member, and the horizontal reinforcing material 871 and a plurality of The diagonal reinforcement 873 may be integrally connected with the connection frame 130 of the standard module 100 or the first support member 230 of the lateral cantilever module 200 through a bolt fastening method or a welding method.

Hereinafter, to briefly describe the installation method of the scaffold structure in the corner region of the cargo hold 10 described above, the step of installing the standard module 100 at a position spaced apart from the corner of the cargo hold 10 internal space, and the standard Installing the transverse cantilever module 200 adjacent to the port side or starboard side wall inside the cargo hold 10 from the corner of the cargo hold 10 on one side of the module 100, and the corner of the cargo hold 10 It may include the step of coupling the longitudinal cantilever module 700 to the other side of the standard module 100 so as to be adjacent to the front side or the stern side wall of the cargo hold 10 from the inside.

In the step of installing the standard module 100, the step of installing one or more reinforcing truss parts 870 in order to prevent bending and torsional deformation of the standard module 100, and a plurality of upper or lower portions of the standard module 100 It may include the step of coupling the pole 310 of the.

In the method of installing a scaffold structure according to an embodiment of the present invention, the edge portion of the cargo hold 10 is connected between the transverse cantilever module 200 and the longitudinal cantilever module 700 in the corner region of the cargo hold 10 . It may further include the step of installing the corner connecting portion 830 to be adjacent to.

In the step of installing the corner connection portion 830, the segment members 831, 832, 833, 834, 835 disposed adjacent to any one of the plurality of segment members 831, 832, 833, 834, 835, in the transverse direction In order to prevent the step of connecting the cantilever module 200 or the longitudinal cantilever module 700 and the sagging of the corner connection part 830, any one of the plurality of segment members 831, 832, 833, 834, 835 or the transverse It may include coupling the anti-sag post 850 to one side of the direction cantilever module 200 .

The scaffold structure for LNG cargo hold insulation work according to an embodiment of the present invention is to increase the size of a part of the scaffold structure in the form of a module, thereby reducing the number of hours of work of the operator during the installation or dismantling of the scaffold structure and shortening the schedule for the installation of the insulation layer inside the cargo hold may have a possible effect.

In addition, each of the standard module 100 and the cantilever module, which have been enlarged in the module type, can be easily dismantled using separate dismantling means. It can have a beneficial effect that can minimize the risk of preventing musculoskeletal diseases of the operator and reducing the risk of various safety accidents.

In addition, as each of the standard module 100 and the plurality of cantilever modules has a truss structure, assembly and installation are simplified through weight reduction, and the structural stability of the scaffold structure against vertical bending or torsional deformation is improved. may have an improved effect.

In addition, by providing a lateral distance adjusting part between the main structure and the platform structure, even if the size of the cargo hold is applied differently, the standard module 100 and the cantilever module that are modularized to a certain size by changing the length of each of the plurality of distance adjusting members It can be used and can be easily applied interchangeably to other lines.

In addition, through the infill adjustment unit connecting between any one of the plurality of cantilever modules and the other cantilever module disposed adjacently, the standard module 100 and the cantilever module, which are modularized to a certain size even if the size of the cargo hold is applied differently It can serve as a buffer by changing the length of a plurality of spacing adjustment members so that it can be used, and can be easily interchanged with other ships.

Furthermore, by additionally installing the anti-sag post and the reinforcing truss in the corner region of the cargo hold, which is structurally prone to torsion or bending, it is possible to have an advantageous effect of preventing deformation of the scaffold structure or sagging of the free end.

The above description is merely illustrative of the technical idea of the present invention, and those of ordinary skill in the art to which the present invention pertains may make various modifications, changes and substitutions within the scope without departing from the essential characteristics of the present invention. will be. Accordingly, the embodiments disclosed in the present invention and the accompanying drawings are for explaining, not limiting, the technical spirit of the present invention, and the scope of the technical spirit of the present invention is not limited by these embodiments and the accompanying drawings . The protection scope of the present invention should be construed by the following claims, and all technical ideas within the scope equivalent thereto should be construed as being included in the scope of the present invention.

100: standard module (100) (Standard module)
110: main frame
111: vertical member
112: first horizontal member
113: second horizontal member
114: inclined member
115: socket part
117: transverse flange portion
130: connection frame
150: connecting member
170: Handrail
200: transverse cantilever module (Transverse cantilever module)
210: first sub-frame
211: first upper side member
213: first lower string member
215: first brace member
230: first support member
310: Post (Post)
311: female socket part
330: diagonal brace (Diagonal brace)
350: platform structure
351: Upper bridge deck
353: Lower bridge deck
370: supporting structure
371: support unit
390: lateral distance control unit
391: distance adjustment member
400: transport means
410: module transfer unit
411: monorail platform
413: Monorail
415: trolley hoist
430: connecting mast unit
431: base mast member
433: connecting mast member
435: extension mast member
450: anti-rotation member
500: module landing unit
610: transverse infill (Infill) adjustment unit
611: transverse spacing adjustment member
611a: fixing pin
630: stair structure
650: elevator unit
700: longitudinal cantilever module (Longitudinal cantilever module)
710: second sub-frame
711: second upper string member
713: second lower string member
715: second brace member
730: middle support
750: second support member
810: longitudinal infill adjustment unit
830: corner joint
831, 832, 833, 834, 835: segment member
850: anti-sag post
870: reinforced truss part
871: horizontal stiffener
873: diagonal reinforcement
10: cargo hold
Td: Trunk deck
Gd: Gas dome
MS: main structure
Mc: mobile cart

Claims (14)

As a scaffold structure installed on the inner wall of the cargo hold for the construction of the insulation layer inside the cargo hold,
a standard module that is spaced apart from the corner of the cargo hold and has a plurality of posts coupled to the upper or lower portion to form a plurality of layers;
a transverse cantilever module coupled to one side of the standard module and disposed adjacent to a port side or starboard side wall inside the cargo hold from a corner of the cargo hold; and
Scaffolding structure comprising a longitudinal cantilever module coupled to the other side of the standard module so as to be adjacent to the front side or stern side wall inside the cargo hold from the corner of the cargo hold. The method of claim 1,
The scaffold structure further comprising one or more reinforcing trusses coupled to the standard module and the transverse cantilever module to prevent bending and torsional deformation of the scaffold structure. 3. The method of claim 2,
The standard module is
a pair of main frames spaced apart from each other in one direction; and
A scaffold structure comprising a pair of connecting frames coupled to both ends of the main frame to integrally connect the pair of main frames. 4. The method of claim 3,
The transverse cantilever module,
a pair of first sub-frames provided to be spaced apart from each other in one direction; and
A plurality of first supports for supporting the scaffold plate by interconnecting the pair of first sub-frames between the pair of first sub-frames and integrating a plurality of them along the longitudinal direction of the first sub-frames A scaffold structure comprising a member. 5. The method of claim 4,
The longitudinal cantilever module,
a pair of second sub-frames having a shorter length than the first sub-frame and spaced apart from each other;
an intermediate support formed horizontally with the pair of second sub-frames in the center between the pair of second sub-frames; and
and a plurality of second support members connecting the pair of second sub-frames and the intermediate support to support the scaffold plate. 5. The method of claim 4,
The reinforcing truss part,
a horizontal reinforcing member spaced apart from the connecting frame and the first supporting member to extend long in a horizontal direction; and
A scaffold structure comprising a plurality of diagonal reinforcements connecting the horizontal reinforcement and the connecting frame or the horizontal reinforcement and the first support member. The method of claim 1,
The scaffold structure further comprising a plurality of segment members connected between the transverse cantilever module and the longitudinal cantilever module and disposed adjacent to a corner portion of the cargo hold. 8. The method of claim 7,
Each end of the plurality of segment members has a flange shape,
Any one of the plurality of segment members is a scaffold structure that is bolted to the adjacent segment member, the transverse cantilever module, or the longitudinal cantilever module by abutting a flange. 8. The method of claim 7,
Each of the plurality of segment members is a scaffold structure provided with a steel pipe having any one of straight, L-shaped, and F-shaped. 8. The method of claim 7,
The scaffold structure further comprising an anti-sag post coupled to one side of the plurality of segment members or the transverse cantilever module to prevent deflection of the plurality of segment members. As a method of installing a scaffold structure installed on the inner wall of the cargo hold for the construction of the insulation layer inside the cargo hold,
installing a standard module at a position spaced apart from a corner of the cargo hold internal space;
installing a transverse cantilever module adjacent to the port side or starboard side wall inside the cargo hold from the corner of the cargo hold at one side of the standard module; and
The method of installing a scaffold structure comprising the step of coupling a longitudinal cantilever module to the other side of the standard module so as to be adjacent to the wall on the fore or aft side inside the cargo hold from the corner of the cargo hold. 12. The method of claim 11,
In the step of installing the standard module,
Installing one or more reinforcing trusses to prevent bending and torsional deformation of the standard module; and
Method of installing a scaffold structure comprising the step of coupling a plurality of posts to the upper or lower portion of the standard module. 12. The method of claim 11,
The method of installing a scaffold structure further comprising the step of connecting between the transverse cantilever module and the longitudinal cantilever module and installing a plurality of segment members adjacent to the corner of the cargo hold. 14. The method of claim 13,
In the step of installing the plurality of segment members,
connecting the segment member, the transverse cantilever module or the longitudinal cantilever module disposed adjacent to any one of the plurality of segment members; and
and coupling an anti-sag post to one side of the plurality of segment members or the transverse cantilever module to prevent deflection of the plurality of segment members.

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