KR100796628B1 - Scaffolding device and scaffolding installation method for insulation system of cargo tank of LNC ship - Google Patents

Abstract

The present invention relates to a scaffolding apparatus and a method for installing a scaffold installed in a large structure such as a tank or a pressure vessel of a ship to provide a working space, and improve the structure of the supporting structure for the internal work of the large structure, to support the upper limbs. It is possible to simplify the structure of the scaffolding device by allowing the structure to be installed along the inner wall of the large structure, thereby reducing the use of materials constituting the scaffold, thereby reducing costs, as well as installation and dismantling It is an object of the present invention to provide a scaffolding device which is easy to use, as well as improving working speed, and which increases safety. Scaffolding device according to the present invention for achieving the above object is a scaffolding device for the internal operation of a large structure, the support structure is installed in close proximity to both sides and the upper surface of the large structure, and to be movable along the support structure It is installed to include a transfer unit for moving the material or the operator's workspace, the support structure is installed to be movable along the wall surface of the large structure.

Large structures, tanks, scaffolding, support columns, rails, baskets

Description

SCAFFOLDING FOR CONSTRUCTING INSULATION SYSTEM IN CARGO TANK OF LNG CARRIER AND SETTING-UP METHOD OF THE SAME}

1 is a simplified view showing a state in which a scaffolding device according to the prior art is installed in a large structure.

Figure 2 is a schematic front sectional view of a state in which the scaffolding device according to the present invention is installed in a large structure.

Figure 3 is a schematic side cross-sectional view of a state in which the scaffolding device according to the present invention is installed in a large structure.

Figure 4 is a perspective view of the scaffolding apparatus according to the present invention installed on a large structure.

Figure 5 is a side view showing a part of a state in which the scaffolding device according to the invention installed in a large structure.

Figure 6 is a perspective view briefly showing a state in which the material transporting device of the scaffolding device according to the present invention coupled with the support structure.

Figure 7 is an enlarged perspective view of the moving roller unit of the scaffolding apparatus according to the present invention.

8 is a perspective view showing a work transportation device of the scaffolding device according to the present invention.

9 is a block diagram showing a method for installing a scaffolding device according to the present invention.

<Explanation of symbols for the main parts of the drawings>

50: large structure 55: guide guide

60: scaffolding device 70: support structure

72, 73: support pillar 75: rolling rail

80: transfer unit 82: material transport cart

822: first axis frame 824: second axis frame

826: third axis frame 827: clamp

828: drive motor 83: cable

84: moving roller part 842: bracket

843: rotation axis 844: plate

846: wheel 847: spring

85: level 851: wheels

88: basket moving roller portion 90: movable support portion

92: rail 94: wheel

95: holding part 96: connecting block

98: roller 100: corner structure

102: primary insulation wall 104: secondary insulation wall

106 plate 108 support part

The present invention relates to a scaffolding apparatus and a scaffolding installation method installed in a large structure such as a tank or a pressure vessel of a ship to provide a working space, and more particularly, a moving speed is installed in a large structure. The present invention relates to a scaffolding device and a method for installing a scaffold that is fast, simple in structure, and easy to install and dismantle.

In general, liquefied natural gas (Liquefied Natural Gas, LNG) is a liquefied natural gas, one of the fossil fuels, liquefied natural gas storage tank is a land-type storage tank that is installed on the ground or buried in the ground depending on the installation location or It is classified into a mobile storage tank installed in a vehicle or a vehicle.

The above-described liquefied natural gas has a risk of explosion when exposed to an impact, and is stored in a cryogenic state. The storage tank storing the liquefied natural gas has a structure in which impact resistance and liquid tightness are firmly maintained. Such storage tanks are somewhat different in that the structures of liquefied natural gas storage tanks installed in automobiles and ships with flows must be prepared against the mechanical stress caused by the flow, compared to land storage tanks with little flow. There is. However, since the liquefied natural gas storage tank installed in the vessel provided with a countermeasure against mechanical stress can be used in the land-type storage tank, of course, the present invention describes the structure of the liquefied natural gas storage tank installed in the vessel as an example.

First, liquefied natural gas (Liquefied Natural Gas, LNG) storage tanks installed in the LNG carrier can be divided into independent tank (Membrane Type). This is a classification according to whether the load of the cargo directly acts on the insulation, the details are as follows.

In Table 1, aka GTT NO 96-2 type and GTT Mark III type were renamed Gaz Transport (GT) and Technigaz (TGZ) in 1995 as GTT (Gaztransport & Technigaz), respectively, GT type was GTT NO 96 -2 type, TGZ type is renamed GTT Mark III type.

The GT and TGZ tank structures described above are described in US Pat. Nos. 6,035,795, US6,378,722, US5,586,513, US Pat. Recent techniques related to corners (edges) in LNG storage tanks include "liquid and thermal insulation tanks with improved edge structures as tanks installed in support structures of ships" disclosed in Korean Patent Laid-Open Publication No. KR2000-0011347. have. As such, the thermal insulation system and its installation method which are installed inside a large structure such as a ship can be described with reference to the above-mentioned known invention.

Here, the scaffolding device is installed before the large structure such as the tank of the LNG carrier described above is completed to provide a space for the worker to easily access and work. These scaffolding devices are divided into scaffolding devices for external work installed on the outside of large structures for work of large structures such as buildings, and scaffolding devices for internal work installed for internal construction of large structures such as pressure vessels, tanks or domes. These differ somewhat in work form, installation structure, etc.

1 is a simplified view showing a state in which a scaffolding device according to the prior art is installed in a large structure, it is disclosed in Korean Patent Registration No. 174764.

Referring to Figure 1, the scaffolding device according to the prior art is installed in the interior of the large structure (1), the struts (3) are respectively installed along both sides of the tank from the bottom surface, on both sides of the outer surface of the struts (3) There is a modular platform (6) mounted at a variable height in the form of a cantilever. In addition, at least two crossing members 4 and 5 are installed between the two side struts 3 to support them and to support the weight increased by the modular platform 6.

The scaffolding device is also provided with access means 7 for accessing the modular platform 6 from the bottom, which access means 7 are arranged in or adjacent the strut 3.

Here, the strut 3 has at least two, in particular three post pit lines 9a, 9b, 9c arranged parallel to the longitudinal axis of the scaffolding device, the post pit line being grounded. It is installed to allow height adjustment.

However, since the scaffolding apparatus and the scaffolding installation method configured as described above are installed inside the entire large structure, supporting structures must be installed even in a space that is not required for actual work, which causes a lot of waste of materials, There is a problem that takes time. In addition, in the conventional scaffolding apparatus, as the size of a large structure increases, the size of the scaffolding apparatus for the work therein is increasing, and thus, more members are required, thereby increasing the material cost. In addition, the safety of the scaffolding device is becoming a factor.

An object of the present invention is to solve the problems of the prior art described above, by improving the structure of the support structure for the internal operation of the large structure, so that the upper limb support structure is installed to be movable along the inner wall surface of the large structure The structure of the scaffolding device can be simplified, thereby reducing costs by reducing the use of materials constituting the scaffolding, and also easy to install and dismantle, improve work speed, and increase safety. To provide a scaffolding device and a method of installing the scaffold.

Scaffolding device according to the present invention for achieving the above object is a scaffolding device for the internal operation of a large structure, the support structure is installed in close proximity to both sides and the upper surface of the large structure, and to be movable along the support structure It is installed to include a transfer unit for moving the material or the operator's work space, the support structure is installed to be supported on both sides and the upper surface of the large structure to be movable.

In addition, the movement of the support structure may include a plurality of rails arranged along the wall surface of the large structure, and a movable support for being installed on the support structure to move along the rail. Here, the movable support portion is installed on the support structure and has a connecting block having two inclined surfaces inclined at an angle corresponding to the wall surface of the large structure, and are arranged to be engaged with the rail and the central axis is rotatable on the inclined surface of the connecting block. It may include a pair of wheel parts that are each installed. In addition, the wheel portion may be formed in a shape corresponding to the shape of the rail on the surface in contact with the rail. On the other hand, the movable support may include a motor for driving the wheel. And, the rail may be made of a cylindrical pipe. In addition, the rail may be installed on the surface of the corner structure is installed in the corner portion of the large structure. In addition, the support structure may include a roller installed at the lower end. In addition, the guide may be installed on the bottom of the large structure to guide the movement of the roller. On the other hand, the support structure includes a pair of support pillars spaced apart from each other by a predetermined distance, and the transfer portion is installed between the pair of support pillars can move along the support pillar. In addition, the support structure includes a rolling rail which is installed along the inner surface facing each other between the pair of support pillars, the transfer portion is provided on each side is coupled to the rolling rail and the moving roller portion for guiding movement It may include. In addition, the rolling rail is installed in a plurality of rows, the conveying unit is installed in the rolling rail close to the large structure of the rolling rail for moving the material, and installed on the rolling rail far from the large structure and the work It may include a basket that the operator can ride for the work of the material transferred from the bogie. In addition, the support structure is composed of a pair of truss beams, the transfer portion may move along the truss beam. In addition, the support structure may move in the longitudinal direction along the wall surface of the large structure, the transfer portion may move in the height direction along the support structure. In addition, it may include a drive unit installed between the support structure and the large structure to move the support structure. Here, the drive unit may include a cable connected to the support structure and the large structure, and a cable winding to move the support structure while winding or unwinding the cable.

In addition, the scaffolding installation method according to the present invention for achieving the above object is the step of installing a support structure to approach the inner wall of the large structure, the step of installing the support structure to be movable along the wall surface of the large structure And, coupled to the transfer unit which is installed to be movable according to the support structure to provide movement of materials or a work space for the worker.

The installing of the support structure may include installing a plurality of rails on an inner wall of the large structure, installing a movable support part to movably couple the rail to the support structure, and by the movable support part. And coupling the support structure to be movable along an inner wall of the large structure.

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

2 and 3 is a schematic front and side cross-sectional view of a state in which the scaffolding device according to the present invention is installed in a large structure.

In the scaffolding device 60 of the present invention, the support structure 70 is installed in close proximity to both side surfaces and the upper surface of the inner wall surface for the work of the large structure 50. The support structure 70 may be installed to be movable along the wall surface of the large structure 50, and may be installed to be movable in the longitudinal direction along the large structure 50. Here, the longitudinal direction in which the support structure 70 moves is a direction indicating the arrow direction shown in FIG. 2. To this end, the support structure 70 includes a movable support portion 90, the movable support portion 90 is installed on the rail 92 and the support structure 70 in the longitudinal direction along the large structure (50) It is installed and includes a wheel portion 94 to be coupled to the rail 92, thereby moving to the support structure 70 along the rail 92.

In addition, the support structure 70 is provided with a transfer unit 80 for moving the material or worker. At this time, the transfer unit 80 is installed to be movable in the height direction along the support structure (70).

As such, the transfer part 80 moves in the height direction along the support structure 70, and the support structure 70 is perpendicular to the direction of the arrow in FIG. 2 along the wall surface of the large structure 50. Moving in one direction) provides a space for working the entire inner wall surface of the large structure (50). On the other hand, the transfer unit 80 may be divided into a material transport device 82 for transporting material, and a job transport device 86 that can be occupied by the operator, the material transport device 82 and the job transport The device 86 can be operated separately. The worker who boarded the work transfer device 86 installs the material moved by the material transport device 82 on the inner wall surface of the large structure 50.

As such, the scaffolding device 60 may individually move materials or workers along the supporting structure 70, and the supporting structure 70 installed on a portion of the large structure 50 may be the large structure 50. It moves along the wall of the wall and allows the internal work.

Therefore, the scaffolding device 60 according to the present invention does not need to be installed on the inner wall surface of the large structure 50 as a whole, and saves the installation space of the scaffolding device 60 and consumes less time and materials for its installation. The manufacturing cost can be reduced.

4 and 5, which are perspective views showing a part of the scaffolding apparatus according to the present invention and a part thereof, for a more detailed description, are as follows.

The scaffolding device 60 according to the present invention provides a space necessary for the work to the worker when working in a high place, such as a pressure vessel, a large structure 50 such as a tank or a dome, and provides a material and work tools. Transport.

The inner wall of the large structure 50 is installed a heat insulation system (P) for the internal sealing, for this purpose a scaffolding device (60) for the installation work of the heat insulation system is installed.

The scaffolding device 60 is provided with a support structure 70 which is installed in close proximity to both sides and the upper surface of the large structure 50, the support structure 70 to move the material and to provide a work space for the worker The transfer unit 80 is installed to be movable along the support structure 70.

At this time, the support structure 70 is installed to be supported to move along the inner wall surface of the large structure 50, preferably between the support structure 70 and the large structure (50) A movable support portion 90 for movably supporting 70 is provided.

The movable support unit 90 is provided with a plurality of rails 92 on the inner wall surface of the large structure 50 so that the support structure 70 can move along the inner wall surface. The rail 92 may be installed at the bent portion of the large structure 50, and may be preferably installed on the surface of the corner structure 100 installed at the corner of the large structure 50.

The corner structure 100 includes a primary heat insulation wall 102 for primary heat insulation of the tank, and a secondary heat insulation wall 104 below. In addition, the corner structure 100 is provided with a plate 106 on the upper portion of the primary insulating wall (102). In addition, the plate 106 is provided with a plurality of support parts 108 formed with screw holes. On the other hand, the rail 92 is disposed in close contact with each support 108, the bolt member is fastened to the screw hole through the rail 92.

As such, the position of the rail 92 is fixed by the bolt member fastened to the support part 108 in the state in which the rail 92 is opened.

Here, the movable support portion 90 has a plurality of connection blocks 96 installed on the support structure 70, the connection block 96 is inclined at an angle corresponding to the wall surface of the large structure (50) 2 Inclined surfaces. In addition, the holding portions 95 are provided on the two inclined surfaces, respectively. In addition, the support portion 95 is rotatably provided with a pair of wheels 94 disposed to engage the rail 92. At this time, the wheel portion 94 is an angle coupled to the rail 92 is determined according to the angle formed by the inclined surface of the connection block 96.

On the other hand, the rail 92 is made of a hollow pipe, preferably made of a cylindrical. As such, when the rail 92 is formed in a cylindrical shape, the wheel part 94 may be formed such that a portion in contact with the rail 92 is formed so as to correspond to the rail 92. ) Is configured to not easily escape from the rail 92.

On the other hand, a roller 98 may be installed at the lower end of the support structure 70. Preferably, the guide guide 55 is installed on the bottom of the large structure 50, the roller 98 can be configured to move the support structure 70 in a state seated on the guide guide 55. have.

As such, the support structure 70 is slidably moved along the inner wall surface of the large structure 50 as the support structure 70 is movably supported and installed by the movable support unit 90 and the roller 98. The entire inner wall of 50) can be worked. Accordingly, when the size of the large structure 50 is increased, only the size of the support structure 70 may be increased, and the length of the rail 92 may be increased to correspond to the increased size of the large structure 50. .

On the other hand, the support structure 70 can be moved manually by the workers, it is also possible to configure the support structure 70 to move automatically. To this end, the movable support portion 90 may include a motor (not shown) for driving the wheel portion 94, the wheel portion 94 rotates as the motor operates, and the rail ( 92 moves the support structure 70 along.

As such, although the support structure 70 may be moved by driving the wheel unit 94 of the scaffolding device 60, the moving method is not limited and various modifications are possible.

For example, the scaffolding device 60 may include a cable connected to the support structure 70 and the large structure 50, and winding means for moving the support structure 70 by pulling the cable. Here, the winding means is made of a pair, made to pull the cable in a different direction, it is preferable that either of the support structure 70 is made to move when the pulling force of the cable is large.

Referring to FIG. 6 and an enlarged view of FIG. 6, which is a perspective view briefly illustrating a state in which a material transportation device of a scaffolding device is coupled to a support structure, the support structure 70 is spaced apart from each other by a predetermined distance. It includes two support columns (72, 73), the support columns (72, 73) are connected by a connecting member 74 is paired. As described above, the transfer unit 80 is coupled between the pair of support pillars 72 and 73. The transfer unit 80 is installed between the pair of support columns 72 and 73 to move up and down along the support columns 72 and 73.

To this end, the support structure 70 is provided with a rolling rail 75 on the inner surface facing each other between the pair of support pillars (72, 73). The rolling rail 75 is spaced apart from the support pillars 72 and 73 by a support member at regular intervals, and is installed along the support pillars 72 and 73 so that the transfer unit 80 can move smoothly. It is made to have a smooth curvature.

In addition, the transfer unit 80 is composed of a material transport device for moving the material, and a work transport device for the operator boarding. To this end, the rolling rail 75 may be installed in a plurality of rows so that the material transport device and the work transport device can be moved respectively.

The material transportation device is installed on the rolling rail 75 close to the large structure 50 of the rolling rail 75, the work transport device is a cloud far from the large structure 50 of the rolling rail 75. It is installed in the rail 75. The work transport device is moved to the rear of the material transport device for the work of the material conveyed from the material transport device in the state that the operator boarded.

In more detail, the material transportation device is installed between the pair of support pillars (72, 73) and moves along the rolling rail (75) and the material transport cart (82) capable of mounting the material, and It consists of a driving unit for moving the material transport truck 82 along the rolling rail (75).

In addition, the material transport trolley 82 is provided with moving rollers 84 on both sides, and the material transport trolley 82 is coupled to the rolling rail 75 by the moving rollers 84 to move. Done. At this time, the moving roller 84 is provided with brackets 842 on both sides of the front and rear ends of the material transport trolley 82 so as to be stably coupled to the rolling rail 75, the bracket 842 The plate 844 which has the rotation shaft 843 is connected to this. In addition, the material transport trolley 82 includes a pair of wheels 846 engaged with the rolling rail 75, the rolling wheel 846 has a central axis rotatable to the plate (844) Is installed.

At this time, the moving roller 84 is preferably installed to adjust the distance between the bracket 842 and the wheel 846.

To this end, the movable roller portion 84 is formed by further extending the rotation shaft 843 of the plate 844 in the direction of the bracket 842, between the end of the rotation shaft 843 and the bracket 842 and the A spring 847 is provided on the rotation shaft 843 between the plate 844 and the bracket 842, and the moving roller portion 84 is installed to be moved a predetermined distance to both left and right sides.

The material transport truck 82 is made of a structure that moves along each axis to transport the material to be installed at a predetermined position of the large structure (50). The material transport trolley 82 has a first shaft frame 822 on which the moving roller portion 84 is installed, and the first shaft frame 822 is formed by the moving roller portion 84 by the large structure ( It moves along the support columns 72 and 73 in a direction parallel to the inner wall surface of the 50.

In addition, a second shaft frame 824 is installed on the first shaft frame 822 so as to cross the transfer direction of the first shaft frame 822 and be transportable in a direction parallel to the inner wall surface of the large structure 50. This is installed. Meanwhile, the second axis frame 824 is perpendicular to the moving directions of the first axis frame 822 and the second axis frame 824, that is, perpendicular to the inner wall surface of the large structure 50. The third axis frame 826 is installed to be movable in the direction. In addition, the third shaft frame 826 is provided with a clamp 827 for fixing the material. The clamp 827 is operated by a drive motor 828 installed in the third shaft frame 826. In addition, each frame is provided with a driving part (not shown) for conveying the frame of each axis in the axial direction.

On the other hand, the material transport cart 82 includes a level portion 85 for adjusting the height away from the bottom surface to fit the moving roller portion 84 to the rolling rail (75). The level portion 85 may include wheels 851 to move along the bottom surface of the large structure 50, and initially the material transport trolley 82 to the support pillars 72, 73. Used to combine Preferably, the level portion 85 may be configured to adjust the height spaced from the bottom surface, it is also possible to separate after being coupled to the support pillars (72, 73).

On the other hand, the scaffolding device 60 is provided with a conveying means for lifting and moving the above-described material transport truck 82, the transport means is the material transport cart 82 is automatically along the support structure 70 Installed so that it can be elevated. To this end, a cable 83 is connected to the support structure 70 and the material transport truck 82, and a winding unit (not shown) is installed to wind the cable 83 to move the material transport truck 82. do.

In addition, the rear of the material transport cart 82 is provided with a work transport device for providing a space for the operator to board.

7 is a configuration of the work transport device of the scaffolding device according to the present invention coupled with the support structure, Figure 8 is a perspective view showing the work transport device of the scaffolding device according to the present invention, the work transport device is A basket 86 installed between the pair of support columns 72 and 73 and moving along the rolling rail 75 and capable of mounting materials; and moving the basket 86 along the rolling rail 75. It consists of a drive unit.

In addition, the basket 86, the basket moving roller 88 is provided on each side. The basket moving roller part 88 has the same structure as the moving roller part 84 of the material transportation truck 82.

The basket 86 is combined with the rolling rail 75 by the basket moving roller 88 to move. At this time, the basket moving roller unit 88 is provided with brackets 882 on both sides of the upper end of the basket 86 to be stably coupled to the rolling rail 75, the rotating shaft 883 on the bracket 882 Plate 884 is connected. In addition, the basket 86 includes a pair of rolling wheels 886 engaged with the rolling rail 75, and the rolling wheels 886 are rotatably installed on the plate 884 with a central axis. do.

At this time, the basket moving roller unit 88 is preferably installed to be able to adjust the distance between the bracket 882 and the rolling wheel 886. To this end, the basket moving roller part 88 is formed by further extending the rotation shaft 883 of the plate 882 in the direction of the bracket 882, between the end of the rotation shaft 883 and the bracket 882. Springs 887 are provided on the rotation shafts 883 between the plate 884 and the brackets 882, and the moving rollers 84 are provided to move left and right at a predetermined distance.

In addition, the basket 86 may be provided with a plurality of the basket moving roller unit 88 in order to more stably coupled, the basket moving roller unit 88 is a predetermined distance to the basket moving roller unit 88 of the upper end Spaced apart may be installed at an angle corresponding to the angle formed by the support structure (50).

On the other hand, the basket 86 is a worker rides, it is possible to work to fix the material transported by the material transport truck 82 to the inner wall of the large structure (50). In addition, the material transport cart 82 or the basket 86 may carry an automatic welding device for connecting the thermal insulation system (P) with an adjacent thermal insulation system (P), the operator wants the automatic welding device It can be installed in to perform the welding work of the insulation system (P).

On the other hand, the work transportation device is provided with the transfer means for moving the basket 86, the transfer means is a cable connected to the support structure 70 and the material movement bogie, and the basket 86 is moved It may be configured to include a winding portion for winding the cable.

9 is a block diagram showing the installation method of the scaffolding device according to the present invention, look at the installation method of the thermal insulation system using the scaffolding device according to the invention as follows.

Insulation system installation method using a scaffolding device 60 according to the present invention is a preparatory step of providing a support structure 70 made in close proximity to the inner wall of the large structure 50, and the support structure 70 to the large structure 50 Support structure coupling step for coupling so as to move along the inner wall of the), and the transport unit coupling step for coupling the transfer unit 80 is installed to be movable along the support structure 70 to provide the movement of materials or the operator's workspace And a heat insulation system installation step of transferring the heat insulation system P to the transfer unit 80 and installing the heat insulation system P on the inner wall of the large structure 50.

More specifically, the preparation step, for the internal work of the large structure 50, such as a pressure vessel, tank or dome, the support structure 70 is installed in close proximity to both sides and the upper surface of the large structure 50 do.

The support structure 70 forms a pair of support pillars 72 and 73 adjacent to an inner wall surface of the support structure 70, and connects the connecting member 74 between the respective support pillars 72 and 73. It is made by integration.

Next, a support 95 is installed at the bent portion of the inner wall of the large structure 50, and the bolt penetrating the rail 92 is fastened to the support 95. In this case, the rail 92 is formed to extend along the inner wall of the large structure 50, preferably, the corner module is first installed in the corner of the large structure 50, and the rail module in the corner ( 92).

When the large structure 50 is formed to be bent, it is preferable that the support structure 70 is installed to have a gentle curvature to move.

In addition, in the coupling step of the support structure 70, the movable support unit 90 is installed on one side for coupling with the rail 92. Then, the movable support unit 90 is coupled to the rail 92 and moves the support structure 70. As such, the support structure 70 coupled with the rail 92 may be supported by the movable support 90 so as to be movable on the rail 92. It moves along the entire inner wall surface of the structure 50.

The transfer unit 80 is a step of installing the transfer unit 80 to move the material along the support structure 70 or to provide a work space for the worker to move. In the coupling step 80, the step of combining the material transport device for the transfer of the insulation system (P) and the boarding means provided to enable the operator to ride for the installation work of the material transported by the material transport means Combining.

To this end, a plurality of rails 92 and 72 are provided on the inner side of the support structure 70, that is, the pair of support pillars 72, 73, 72, 73 facing each other. At this time, between the rails 92 and 72 positioned below the support structure 70, a work cart 82, which is a material transfer means for moving materials, is coupled, and the rails 92 and 72 at the upper portion thereof. Between the baskets 86, 86 which are the means of boarding the operator is installed. It is installed on the inner wall of the large structure (50) for the worker boarding the mall basket (86) 86, the insulation system (P) for sealing the inner wall surface of the material transported by the work cart 82, for example To do this. In addition, since the worker is located behind the material, the worker can attach the insulation system P to the inner wall while the mall baskets 86 and 86 are on board.

In addition, the insulation system installation step is to transfer the insulation system (P) to the transfer unit 80 to be installed on the inner wall of the large structure (50). As such, the scaffolding device 60 installed according to the above-described method may be installed so that the support structure 70 is automatically movable along the rail 92 of the large structure 50, and the work cart 82 is provided. ) And the baskets 86 and 86 are freely elevated within the support structure 70, so that the work of the high and low places of the large structure 50 is possible.

On the other hand, the work cart 82 of the transfer unit 80 is moved to the vicinity of the inner wall of the target large structure 50 by absorbing the insulation system (P), the basket (86) 86 is a worker After that, the work cart 82 is moved to the location. As such, the worker and the material may move along the support structure 70 to the inner wall work site of the large structure 50 and install the entire internal insulation system P.

As described above, the scaffolding apparatus for installing an insulation system of an LNG tank cargo tank according to the present invention and a method of installing the same have been described with reference to the illustrated drawings, but the present invention is not limited to the embodiments and drawings described above, and the patent Various modifications and variations can be made by those skilled in the art within the scope of the claims.

In addition, the scaffolding apparatus and the installation method according to the present invention can be used not only for the installation of the insulation system of the cargo tank of LNG vessels, but also for the drying of large structures 50 such as pressure vessels, tanks or domes installed for land use. have. On the other hand, in the embodiment of the present invention, the movable support portion 90 has been described with respect to the embodiment consisting of a rail 92, and the movable support portion 90 meshing with the rail 92, but is not limited thereto. Various variations are possible. In one example, the support structure 70 may be installed to be movable by a cylinder that is stretched by hydraulic or pneumatic, it is also possible to use a separate mobile vehicle. In addition, teeth may be formed in the wheels 94 of the rail 92 and the wheel part 94 of the movable support part 90 so that the rail 92 and the movable support part 90 can move without slipping. have. Preferably, the motor may be made of a step motor to adjust the degree of movement of the support structure (70).

The scaffolding apparatus and the installation method of the insulation system of the cargo tank of the LNG vessel according to the present invention configured as described above is a support structure installed for the internal work of a large structure is installed to be movable along the inner wall surface, the support structure The internal work can be done by moving the parts, thereby reducing the amount of material used in the scaffolding, thereby reducing the cost. Moreover, when the size of the large structure, in particular the length, increases, it is possible to carry out the entire internal work simply by increasing the length of the rail supporting the support structure. In addition, since the size of the support structure does not have to be increased, the durability and safety of the support structure are improved. In addition, the material can be automatically transferred, and the work space of the worker can be elevated to improve the working speed. In addition, since the structure of the scaffolding device is simple, there is an advantage that it is easy to install and dismantle.

Claims (17)

As a scaffolding device for the internal work of large structures, A support structure installed in close proximity to both sides and the upper surface of the large structure, It is installed to be movable along the support structure includes a transfer unit for moving the material or provide a work space of the worker, The support structure is a scaffolding device, characterized in that the movable support is installed on both sides and the upper surface of the large structure. The method according to claim 1, A plurality of rails arranged along the wall surface of the large structure, A scaffolding device installed on the support structure and including a movable support for moving along the rail. The method according to claim 2, The movable support is installed on the support structure and the connecting block having two inclined surfaces inclined at an angle corresponding to the wall surface of the large structure, Scaffolding device is disposed in engagement with the rail and comprises a pair of wheels, the central axis is rotatably installed on the inclined surface of the connecting block. The method according to claim 3, Scaffolding device is characterized in that the groove portion corresponding to the shape of the rail is formed on the surface in contact with the rail. The method according to claim 3, And the movable support portion comprises a motor for driving the wheel portion. The method according to claim 2, The rail is a scaffolding device, characterized in that consisting of a cylindrical pipe. The method according to claim 2, The rail is a scaffolding device, characterized in that installed on the surface of the corner structure is installed in the corner of the large structure. The method according to claim 1, The support structure is a scaffolding device, characterized in that it comprises a roller installed on the lower end. The method according to claim 8, Scaffolding apparatus is installed on the bottom of the large structure and comprises a guide guide for guiding the movement of the roller. The method according to any one of claims 1 to 9, The support structure includes a pair of support pillars spaced apart from each other by a predetermined distance, connected by a connecting member, And the transfer unit is installed between the pair of support pillars to move along the support pillars. The method according to claim 10, The support structure includes a rolling rail installed along the inner surface facing each other between the pair of support pillars, The transfer unit is installed on both sides of the scaffolding device, characterized in that coupled to the rolling rail and comprises a moving roller for guiding movement. The method according to claim 11, The rolling rail is installed in a plurality of rows, The transfer unit is installed on the rolling rail close to the large structure of the rolling rail work cart for moving the material, A scaffolding apparatus comprising a basket which is installed on a rolling rail far from the large structure and which the worker can board for the work of the material transferred from the work cart. The method according to claim 10, The support column is a scaffolding device, characterized in that made of a truss structure. The method according to any one of claims 1 to 9, Scaffolding device is provided between the support structure and the large structure comprising a drive for moving the support structure. The method according to claim 14, The drive unit and a cable connected to the support structure and the large structure, And a cable winding for winding or unwinding the cable and moving the support structure. Installing a support structure to approach the inner wall of the large structure, Installing the support structure to be movable along a wall surface of the large structure; Scaffolding installation method comprising the step of coupling the transfer unit is installed to be movable according to the support structure to move the material or to provide a work space for the worker. The method according to claim 16, Installing the support structure may include installing a plurality of rails on an inner wall of the large structure; Installing a movable support portion movably coupled to the rail to the support structure; And coupling the support structure to be movable along the inner wall of the large structure by the movable support.

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