KR101985208B1 - Scaffold - Google Patents

Abstract

Disclosed is a scaffold apparatus. According to an embodiment of the present invention, the scaffold apparatus, which is installed in a cargo hold, comprises: a pair of main structures respectively placed in a left side unit and a right side unit in the internal space of the cargo hold; and a connection structure placed in the central unit in the internal space of the cargo hold to be connected to the pair of main structures. The main structures have eight floors, wherein the first floor through the fifth floor are divided into three sections, the fourth floor is divided into two sections, and the seventh floor comprises one section. In a first section and a second section from the center of the cargo hold on the first floor of the main structures, a second section from the center of the cargo hold on the fourth floor, and a first section from the center of the cargo hold on the seventh floor, a pair of first braces having a first diameter are placed in an X-shape. In a first section and a second section from the center of the cargo hold on the second floor of the main structures, a first section and a second section from the center of the cargo hold on the third floor, a first section from the center of the cargo hold on the fourth floor, a first section from the center of the cargo hold on the fifth floor, and a first section from the center of the cargo hold on the sixth floor, a pair of second braces having a second diameter, which is smaller than the first diameter, are placed in an X-shape. In a second section from the center of the cargo hold on the fifth floor of the main structures, and a second section from the center of the cargo hold on the sixth floor, the first braces, which are inclined downwards from the center of the cargo hold towards an edge, and the second braces, which are inclined downwards from an edge of the cargo hold towards the center, are placed in an X-shape. The present invention aims to provide a scaffold apparatus which is optimized in terms of stability and cost.

Description

Patriarch {SCAFFOLD}

The present invention relates to a chief device installed in a cargo hold.

Generally, natural gas is transported by the pipeline from the area where it is produced to the area where it is consumed. However, in countries where production exceeds demand, large quantities of natural gas will remain, and if there is no effective way to transport natural gas to regions where demand exceeds supply, the energy imbalance will grow.

Liquefaction of natural gas facilitates the storage and transport of natural gas. Liquefied natural gas (LNG) is about one-sixth the volume of natural gas in the gaseous state And is made by cooling natural gas below the boiling point (-259 ° F at ambient pressure).

Therefore, all types of vessels, floats or floating structures including LNG carrier, LNG FPSO, LNG RV, etc., including LNG cargo holds are composed of, for example, an inner tank made of a metal membrane and a thermal insulation layer surrounding the inner tank, It is possible to store a LNG such as LNG that minimizes the generation of vaporized gas due to the amount of the penetration of the LNG in the cargo hold.

Such ships or floating marine structures require the installation of a chieftain in the cargo hold for the cargo hold installation process.

However, the patriarch is a structure that supports the worker who carries out the work in the cargo hold. Conventionally, a very thick and heavy member has been used to secure the stability of the chieftain. In this case, although the stability of the patriarch is secured, there is a problem that the installation cost and weight of the patriarch are increased.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a view showing a patriarch installed in a conventional cargo hold. FIG. The patriarch shown in Fig. 1 has the form of a patriarch developed by NISSO of Japan.

1 comprises a pair of main structures 10 and a connecting structure 20 interconnecting the pair of main structures 10, which are respectively disposed on the right and left sides of the internal space of the cargo hold, . The main structure 10 has eight layers F1 to F8 and the first layer F1 to the fifth layer F5 have three chambers R1 to R3 and the sixth layer F6 has two chambers R1 to R3, (R1 to R2), and the seventh layer (F7) has one column (R1).

At the center of the cargo holds of the first floor F1 to the sixth floor F6 of the main structure 10 in the second car R2 and the first floor F1, the sixth floor F6 and the seventh floor F7 In the first (R1) column, a pair of first braces 11 (indicated by a thick solid line) having a relatively large diameter are arranged in an X-shape.

A pair of second braces 12 (indicated by a thin solid line) having a relatively small diameter are formed in the first (R1) column at the center of the cargo hold of the second floor (F2) to fifth floor (F5) of the main structure And arranged in an X-shape.

A third brace R3 having a relatively large diameter is provided in a space defined by the third chamber R3 at the center of the cargo hold of the third car R3 and the third cargo layer 3F at the center of the cargo hold of the second layer F2 of the main structure 10, (Indicated by a thick solid line) is arranged to be inclined downward from the center of the cargo hold in the edge direction.

The chieftain (1) having such a structure has been used for many years without any structural change. Considering too much the structural stability of the chieftain (1), the reinforcement member is made excessively large so that the weight of the entire chieftain (1) There is a growing problem.

Embodiments of the present invention seek to provide an optimized chief device in terms of stability and cost.

According to an aspect of the present invention, there is provided a chief device installed in a cargo hold, comprising: a pair of main structures respectively disposed on left and right sides of a space inside the cargo hold; And a connecting structure disposed at a central portion of the internal space of the cargo hold and connected to the pair of main structures, wherein the main structure has eight layers, the first to fifth layers are divided into three chambers, And the seventh floor is divided into one compartment, the first compartment and the second compartment at the center of the cargo hold of the first floor of the main structure, the second compartment from the center of the cargo hold of the fourth floor, Wherein a first pair of braces having a first diameter in the middle are arranged in an X-shape, the first and second compartments at the center of the cargo hold on the second floor of the main structure, and the first compartment And a second compartment and a first compartment in the middle of said cargo hold on the fourth floor and a first compartment in the middle of said cargo hold on the 5th floor, A second pair of braces having a second diameter smaller than the first diameter are arranged in an X-shape, and a second chamber at the center of the cargo hold at the fifth floor of the main structure and a second chamber at the center of the cargo hold at the sixth floor The first brace inclined downward toward the edge of the cargo hold from the center of the cargo hold and the second brace inclined downward from the edge of the cargo hold toward the center may be disposed in an X shape.

A third brace having a first diameter at a center of the cargo hold of the main structure and a third car at a center of the cargo hold of the third layer are disposed in a downward sloping manner from the center of the cargo hold .

The first diameter may be 30 mm, and the second diameter may be 16 mm.

According to an embodiment of the present invention, structural analysis for a patriarch having a heavier structure and a heavier structure that is reinforced and heavier than the patriarchal apparatus (100 of FIG. 2) according to an embodiment of the present invention and a less heavily structured patriarch It is possible to have an optimum structure that can minimize the total weight and installation cost while having stability equivalent to that of the conventional chieftain (1 in Fig. 1).

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a view showing a patriarch installed in a conventional cargo hold. FIG.
FIG. 2 is a view illustrating a patriarch apparatus according to an embodiment of the present invention.
FIG. 3 is a table showing a result of structural analysis of the patriotic apparatus according to an embodiment of the present invention and the conventional patriarch shown in FIG. 1. FIG.
FIG. 4 is a view of a first comparative patio which is less reinforced than the conventional patriarch shown in FIG. 1 and more reinforced than the patriarch apparatus according to an embodiment of the present invention shown in FIG. 2;
Figure 5 is a view of a second comparative patriarch less restrained compared to the patriarch apparatus according to an embodiment of the present invention.
FIG. 6 is a table showing a result of a structural analysis of the second comparative patriarch of FIG. 5 and the conventional patriot shown in FIG. 1;

BRIEF DESCRIPTION OF THE DRAWINGS The present invention is capable of various modifications and various embodiments, and specific embodiments are illustrated in the drawings and described in detail in the detailed description. It is to be understood, however, that the invention is not to be limited to the specific embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. Referring to the accompanying drawings, the same or corresponding components are denoted by the same reference numerals, do.

FIG. 2 is a view illustrating a patriarch apparatus according to an embodiment of the present invention. 2, the X-axis direction is the longitudinal direction of the cargo hold or the patriarchal device, the + X direction is the forward direction of the cargo hold or patriarchal device, the Y-axis direction is the width direction of the cargo hold or the patriarchal device, Means the left side of the device.

Referring to FIG. 2, the patriotic apparatus 100 according to the present embodiment includes a main structure 110 and a connection structure 120.

The main structures 110 are provided in pairs. The pair of main structures 110 are respectively disposed on the left and right portions of the internal space of the cargo hold.

The main structure 110 has a structure including a plurality of layers and a plurality of columns supporting each layer.

For example, the main structure 110 has a structure including eight layers F1 to F8. Each layer of the main structure 110 is supported by a plurality of columns P.

The first floor F1 to the fifth floor F5 of the main structure 110 have three cubicles R1 to R3 and the sixth floor F6 has two cubicles R1 to R2 and the seventh floor F7 Has one column R1. Here, 'space' means a space surrounded by a pair of adjacent pillars interposed between the upper and lower layers of the main structure 110 and the upper and lower layers on a section or cross section of the patriarchy device 100.

The connecting structure 120 is disposed at the center of the cargo hold inner space. The connection structure 120 is connected to the pair of main structures 110. The connection structure 120 is positioned between the pair of main structures 110 and may serve as a bridge connecting the pair of main structures 110.

As described above, the patriotic device 100 according to the present embodiment including the pair of main structures 110 and the connection structure 120 is formed to extend in the longitudinal direction of the cargo hold.

In the present embodiment, in the middle of the cargo hold of the first floor F1 of the main structure 110, the first car R1 and the second car R2, and the fourth cargo hold F4, A pair of first braces 111 (indicated by thick solid lines) having a first diameter are arranged in an X-shape in the first chamber R1 at the center of the cargo hold. At this time, the first diameter may be 30 mm.

In the present embodiment, in the center of the cargo hold of the first floor R1 and the second floor R2 and the third floor F3 at the center of the cargo hold of the second floor F2 of the main structure 110, the first car R1 and the second car R2) and in the center of the cargo hold of the first car (R1) and the sixth cargo (F6) from the center of the cargo hold of the first car (R1) and fifth cargo (F5) A pair of second braces 112 (indicated by thin solid lines) having a second diameter smaller than the diameter are arranged in an X-shape. At this time, the second diameter may be 16 mm.

In this embodiment, from the center of the cargo hold of the fifth floor (F5) of the main structure 110 to the second car (R2) from the center of the cargo hold of the second car (R2) and the sixth floor (F6) The first brace 111 and the second brace 112, which are inclined downward in the central direction from the edges of the hold, are arranged in an X-shape.

In the present embodiment, in the space formed by the third car R3 at the center of the cargo holds of the third car R3 and the third cargo F3 at the center of the cargo hold of the second floor F2 of the main structure 110, And the third brace 113 is disposed to be inclined downward in the marginal direction from the center of the cargo hold.

1, a second chamber R2 and a third chamber F3 are formed at the center of the cargo hold of the second floor F2 of the main structure 110 (R2) and 5th floor (F5) from the center of the cargo hold of the first car (R1) and the second car (R2) from the center of the cargo hold of the second car (R2) That is, the size (ex. Diameter) of the brace is small.

That is, as shown in FIG. 2, the patriarchy device 100 according to the present embodiment has a structure in which, in the center of a cargo hold of two layers (F2) and three layers (F3) of the main structure 110, While the pair of second braces 112 (indicated by a thin solid line) are arranged in an X-shape, the conventional chieftain 1 has two layers (F2) and three layers (F3) of the main structure 10 A pair of first braces 111 (indicated by thick solid lines) having a first diameter larger than the second diameter in the second chamber R2 are arranged in the X-shape from the center of the cargo hold.

2, the chief apparatus 100 according to the present embodiment has a structure in which the second compartment R2 is located at the center of the cargo hold of the fifth floor (F5) and the sixth floor (F6) of the main structure 110 The first brace 111 (indicated by a thick solid line) and the second brace 112 (indicated by a thin solid line) inclined downward in the center direction from the edge of the cargo hold are arranged in an X-shape, while the conventional brace 111 1, a pair of first braces 111 are arranged in an X-shape from the center of the cargo hold of the fifth floor (F5) and the sixth floor (F6) of the main structure 110 to the second car R2 .

2, a pair of second braces 112 having a second diameter at the first chamber R1 at the center of the cargo hold of the sixth layer F6 of the main structure 110 (As indicated by a thin solid line) is arranged in an X-shape, the conventional chief hoist 1 is arranged in the second chamber R1 at the center of the cargo hold of the sixth layer F6 of the main structure 10, A pair of first braces 111 (indicated by a thick solid line) having a large first diameter are arranged in an X-shape.

1, the present invention is not limited to the conventional one shown in FIG. 1, and thus, the present invention is not limited thereto. Compared to the chieftain (1), the weight and installation cost are much lower.

Hereinafter, the patriotic apparatus 100 according to the embodiment of the present invention is compared with the conventional patriarch 1 shown in Fig. 1 in terms of stability.

FIG. 3 is a table showing a result of structural analysis of the patriotic apparatus according to an embodiment of the present invention and the conventional patriarch shown in FIG. 1. FIG.

A to J in FIG. 3 are schematic diagrams of a chief device 100 (hereinafter referred to as 'the patriarch device 100') according to an embodiment of the present invention and a conventional chief device 1 shown in FIG. 1 Quot; chief (1) "). For reference, the present chief device 100 and the conventional chief hoist 1 each have sections A through J having substantially the same shapes as those of FIG. 2 and FIG. 1, and sections A through J are spaced along the longitudinal direction of the cargo hold .

Structural analysis for deriving the results of FIG. 3 was performed for sections A through J of the present patriotic device 100 and the conventional patriarch 1, respectively. The values shown in the second row and the third row of the table of FIG. 3 are the maximum structural response (ex. Stress, buckling, etc.), which is a result of structural analysis performed for each section of the present patriotic apparatus 100 and the conventional patriarchy 1, The smaller the number, the more stable the structure can be evaluated.

Referring to FIG. 3, the maximum structural responses of the patriarchy device 100 shown in the sections A to G are 0.93, 1.07, 1.03, 1.08, 1.05, 1.01 and 1.02, , 1.06, 1.09, 1.08, 1.04, 1.03. The maximum structural responses of the patriarchal apparatus 100 viewed in sections H to J are 1.09, 1.13, and 0.93, and the maximum structural responses of the conventional patriarch 1 are 1.08, 1.1, and 0.926.

In this case, the patriarchy device 100 shown in the sections A to G is structurally stable compared to the conventional patriarchy 1, and the patriarchy device 100 seen in sections H to J can be evaluated as a less stable structure than the conventional patriarchy 1 have.

When the structural analysis result of FIG. 3 is viewed from the viewpoint of the maximum structural response ratio, the ratio of the maximum structural response of the present patois apparatus 100 to the maximum structural response of the conventional patriarch 1 is 99.7% in the sections A to G, 98.2%, 97.2%, 99.1%, 97.2%, 97.1%, 99.0%, and 100.9%, 102.7%, 100.4% in sections H to J.

At this time, in the sections A to J, the ratio of the maximum structural response of the main patriotic apparatus 100 to the maximum structural response of the conventional patriotism ranges from 97.2% to 102.7%. In this case, the maximum structural response ratio in all sections falls within an acceptable range of 95% to 105%.

Therefore, although the present patriotic apparatus 100 uses a brace smaller than the conventional patriarchal apparatus, the overall weight and installation cost can be effectively reduced while having stability equivalent to that of the conventional patriarch.

In this regard, FIG. 4 is a view of a first comparative patriarch less reinforced than the conventional patriot shown in FIG. 1 and further reinforced compared to the patriotic apparatus according to an embodiment of the present invention shown in FIG.

Referring to FIGS. 4 and 2, the first comparative patriarch 100 'and the present patriotic device 100 have almost the same structure. It should be noted that the first comparative chiefs 100 'are formed by a pair of first braces having a first diameter larger than the second diameter in the second chamber R2 at the center of the cargo hold of the third layer F3 of the main structure 110' 2, the main patriotic apparatus 100 is arranged in the second chamber R2 at the center of the cargo hold of the third layer F3 of the main structure 110 as shown in FIG. 2, The first comparison caretaker 100 'has a more reinforced structure than the present caretaker apparatus 100 in that a pair of second braces 112 (indicated by a thin solid line) having a diameter are arranged in an X-shape .

Although not shown in the figure, when the structural analysis of the first comparison chief 100 'and the conventional chief length 1 is performed, the maximum structural response ratio of the first comparison chief 100' to the conventional chief length 1 is not less than 95% %.

Further, although not shown in the case of other comparative patriarchs that are less reinforced than the conventional patriarchy 1 and more reinforced than the present patriarchy apparatus shown in FIG. 2, if structural analysis is performed, the allowable range of maximum structural response ratio is 95% ≪ / RTI >

As a result, the patriarchs having a structure reinforced with respect to the present patriotic apparatus 100 and having a structure that is less reinforced than the conventional patriarchy 1 have the same stability as the present patriarchy apparatus 100, It will cost more.

FIG. 5 is a view illustrating a second comparative short patio which is less reinforced than the patriarch apparatus according to an embodiment of the present invention. 5 and 2, the second comparative patriarch 100 "and the main patriotic device 100 have substantially the same structure, except that the second comparison patriarch 100" A pair of second braces 112 (indicated by a thin solid line) having a second diameter in a second compartment R2 are arranged in an X-shape in the cargo hold of the fifth floor F5 of the first floor 110 '', The first brace 100 has a second brace 112 having a second diameter in the second chamber R2 and a second brace 112 having a first diameter larger than the second diameter in the cargo hold of the fifth layer F5 of the main structure 110 as shown in Fig. The second comparison clan 100 "has a less reinforcing structure and less heavier structure than the present clan device 100 in that the first braces 111 are arranged in an X-shape.

FIG. 6 is a table showing a result of a structural analysis of the second comparative patriarch of FIG. 5 and the conventional patriot shown in FIG. 1;

Referring to FIG. 6, the maximum structural responses of the second comparison sheathed 100 " in sections A through J are 0.942, 1.45, 1.16, 1.32, 1.33, 1.31, 1.31, 1.41, 1.19 and 0.931, The maximum structural responses of the samples 1) are 0.933, 1.09, 1.06, 1.09, 1.08, 1.04, 1.03, 1.08, 1.1, 0.926.

In this case, the second comparison sheathed 100 " in sections A to J can be evaluated to be less stable than the conventional sheathed area (1 in Fig. 1).

6, the ratio of the maximum structural response of the second comparison length 100 "to the maximum structural response of the conventional length (1 in Fig. 1) J, the ratio of the maximum structural response of the second comparison choker 100 "to the maximum structural response of the conventional chug (1 in FIG. 1) was 101.0%, 133.0%, 109.4%, 121.1%, 123.1%, 126.0% %, 130.6%, 108.2%, 100.5%.

At this time, the ratio of the maximum structural response of the second comparison sheathed 100 " to the maximum structural response of the conventional sheathed section (1 in Fig. 1) in the remaining sections except sections A and J far exceeds the upper limit of the allowable range of 105% do.

In this case, the second comparison sheathed 100 " has a stability that is significantly lower than that of the conventional sheeting (1 in Fig. 1).

Further, even in the case of other comparative patriarchs which are less reinforced than the present patriarchy apparatus 100, although not shown, when the structural analysis is performed, the maximum structural response ratio far exceeds the allowable upper limit of 105%.

The above-described patriarchy device 100 is structured to have the same structure as the conventional patriarchy 100 through structural analysis of a patriarch having a heavier structure and a less reinforcing and less heavily structured structure than the present patriarchy device 100 It can be confirmed that it has an optimal structure that can minimize the total weight and installation cost while having stability.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, many modifications and changes may be made by those skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims. The present invention can be variously modified and changed by those skilled in the art, and it is also within the scope of the present invention.

1: Chieftain
10: Main structure
20: connection structure
100: Patriarchal device
110: main structure
111: First brace
112: second brace
113: Third brace
120: connection structure

Claims (3)

A chief device installed in a cargo hold,
A pair of main structures respectively disposed on left and right sides of the internal space of the cargo hold; And
And a connection structure disposed at a central portion of the internal space of the cargo hold and connected to the pair of main structures,
The main structure has eight layers, the first to fifth layers are divided into three spaces, the sixth layer is divided into two spaces, the seventh layer is divided into one space,
A first pair of braces having a first diameter at the center of the cargo hold of the first structure and a first chamber at the center of the cargo hold of the seventh layer at the center of the cargo hold of the fourth layer and a first brace Shaped,
First and second compartments in the middle of the cargo hold in the second layer of the main structure and first and second compartments in the middle of the cargo hold in the third and fourth floors, A pair of second braces having a second diameter smaller than the first diameter are arranged in an X-shape at a center of the cargo hold of the sixth layer,
The second compartment in the middle of the cargo hold in the fifth layer of the main structure and the second compartment in the middle of the cargo hold in the sixth floor are provided with the first brace inclined downward from the center to the edge of the cargo hold, The second brace is arranged in an X-
First and second compartments in the middle of the cargo hold in the second layer of the main structure and first and second compartments in the middle of the cargo hold in the third and fourth floors and a first compartment in the middle of the cargo hold in the fourth layer and a first compartment in the center of the cargo hold in the fifth, Wherein the second brace is disposed in the first chamber at the center of the cargo hold of the sixth layer in an X-shaped configuration, and the second brace is disposed in the second chamber at the center of the cargo hold of the fifth layer of the main structure, Wherein the second brace, not the first brace, is disposed in a downward sloping manner at the edge of the cargo hold in a center, thereby reducing weight and installation cost. The method according to claim 1,
The third brace having the first diameter is disposed in a downward sloping manner from the center of the cargo hold in a space formed by the third car from the middle of the cargo hold of the second structure and the third car from the center of the cargo hold of the third cargo , A patriarchal device. The method according to claim 1,
Wherein the first diameter is 30 mm and the second diameter is 16 mm.

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