JP2016150695A - Ship - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a ship capable of reducing a burden on an operator performing inspection work while suppressing a decrease in tank capacity.SOLUTION: In a ship, a partition wall 6 partitioning a cargo hold 4 in a bow-stern direction comprises: a first wall part 7A; a second wall part 7B located at a position different from the first wall part 7A in a ship width direction and on a stern side from the first wall part 7A; a first support part 8A protruding from a wall surface 11 directed to the stern side of the first wall part 7A; a second support part 8B protruding from a wall surface 12 directed to a bow side of the second wall part 7B; a first scaffold part 9A supported by a wall surface 15 directed to the stern side of the first wall part 7A, and the second support part 8B; a second scaffold part 9B supported by a wall surface 16 directed to the stern side of the second wall part 7B, and the first support part 8A; a first ladder part 10A arranged between the first scaffold part 9A and the wall surface 12 and extending in a vertical direction; and a second ladder part 10B arranged between the second scaffold part 9B and the wall surface 11 and extending in the vertical direction.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a ship having a cargo hold inside a hull.

  Some ships that carry objects such as cryogenic liquids contain a box-shaped cargo tank whose longitudinal section in the width direction of the ship forms a polygonal shape in the interior space of the hull. In such a ship, a plurality of cargo holds are formed in the fore-and-aft direction by dividing the interior space of the hull into a fore-and-aft direction by a partition wall. Each of these cargo holds contains a cargo tank independently. That is, a plurality of cargo tanks are arranged in the ship's tail direction inside the hull.

  In the above-described ship, the gap between the cargo tank and the hull and the gap between the cargo tank and the partition wall are formed as small as possible in order to ensure a sufficient capacity of the cargo tank without increasing the size of the hull. On the other hand, the cargo tank is provided with a heat insulating material on the outer surface. This heat insulating material needs to be inspected regularly. Therefore, the hull around the above-described cargo tank and the partition wall are each provided with a scaffold for checking the heat insulating material. These scaffolds are formed so as to extend in the horizontal direction, and a plurality of scaffolds are provided at intervals in the vertical direction. Between these multiple upper and lower scaffolds, a ladder is provided for the operator to move up and down. For example, a ladder extending upward from the scaffold arranged on the uppermost side of the partition wall is provided on the upper deck. It is connected to the entrance and exit of a manhole.

  The partition wall mentioned above has what is called a plate bone structure which combined the plate member and the small bone member. The plate member is formed in a plate shape extending in the ship width direction and in the vertical direction. On the other hand, the small bone member is formed so as to protrude toward the stern side or the bow side (generally the stern side) with respect to the plate member and to extend in the vertical direction. The small bone members have, for example, a T-shaped cross section, and are arranged in the ship width direction and attached to the plate member by welding or the like. As for the some partition wall provided in one ship, the direction which a small bone member protrudes is unified by the stern side or the bow side.

  Patent Document 1 is different from a ship equipped with the above-described cargo tank, but in a bulk carrier, a technique for providing a scaffold or a ladder for inspection of a hold frame that is a structural member of a warehouse side wall is described. Yes.

Japanese Patent No. 4632762

By the way, the partition wall mentioned above is equipped with the scaffold and the ladder in both the stern side and the bow side. In this case, a ladder can be provided in the space between the plate member and the scaffold on the side of the stern side and the bow side where the small bone member protrudes. Therefore, the scaffold can be formed continuously in the ship width direction.
However, the scaffolds and ladders provided on the stern side and the bow side on the side where the small bone member does not protrude are both directly fixed to the plate member. Therefore, it is necessary to form a notch penetrating up and down at a place where the scaffold is moved up and down by the ladder. When the notches are formed in this way, the worker must always check his / her feet when moving on the scaffold, increasing the load on the worker.
On the other hand, in order to provide a ladder without forming a notch in the scaffold, it is conceivable to secure the space between the scaffold and the plate member by separating the scaffold and the plate member by a bracket or the like. However, in this case, there is a problem that the space for installing the cargo tank in the stern direction is reduced by the amount of space provided between the scaffold and the plate member, and the tank capacity is reduced.

  This invention is made | formed in view of the said situation, and it aims at providing the ship which can reduce the load of the operator who performs inspection work, suppressing the fall of a tank capacity | capacitance.

According to a first aspect of the present invention, a ship includes a hull having a cargo hold formed therein, and a partition wall that divides the cargo hold in a fore-and-aft direction, and the partition wall includes a first wall portion. And a second wall portion located at the stern side different from the first wall portion and located on the stern side of the first wall portion, and a wall surface facing the stern side of the first wall portion. A first support portion, a second support portion provided so as to protrude from a wall surface facing the bow side of the second wall portion, a wall surface facing the bow side of the first wall portion, and the second support portion A second scaffold supported by the first scaffold, a wall facing the stern side of the second wall, a second scaffold supported by the first support, and a bow of the first scaffold and the second wall A first ladder that is arranged between a wall surface facing the side and extends in the vertical direction, and the second scaffold and the ship of the first wall portion And a second ladder extending vertically arranged between the wall surface facing the side.
With this configuration, the first support portion can be provided on the stern side and the second support portion can be provided on the bow side without increasing the thickness dimension of the partition wall in the stern direction. Furthermore, a first ladder is provided between the wall surface facing the bow side of the second wall portion and the first scaffold, and a second ladder is provided between the wall surface facing the stern side of the first wall portion and the second scaffold. be able to. Therefore, it is not necessary to provide a notch for installing the ladder with respect to the first scaffold and the second scaffold. As a result, it is possible to reduce the load on the operator due to the foot confirmation during the inspection work while suppressing the capacity of the cargo tank from decreasing due to the increase in the thickness of the partition wall.

According to the second aspect of the present invention, in the ship, a plurality of first scaffolds in the first aspect are provided in a vertical direction of the cargo hold, and the first ladder has a predetermined number of the first scaffolds. The first ladders that are provided so as to cross over and are adjacent to each other in the vertical direction are shifted from each other in the extending direction of the first scaffold, and the first scaffold and the second wall on which the first ladder is disposed A first platform continuing to the first scaffold may be provided between a wall surface facing the bow side of the section.
By comprising in this way, the length of one 1st ladder can be fully shortened rather than the case where it forms so that a 1st ladder may be covered over all the 1st scaffolds. Therefore, even if an operator falls on the first platform by stepping off the first ladder when moving up and down the first ladder, the falling height can be kept low. As a result, damage to the operator can be minimized.

According to the third aspect of the present invention, in the ship, a plurality of second scaffolds in the first or second aspect are provided in the vertical direction of the cargo hold, and the second ladder has a predetermined number of the first scaffolds. The second ladders, which are provided so as to cross a scaffold and are adjacent to each other in the vertical direction, are shifted from each other in a direction in which the second scaffold extends, and the second scaffold on which the second ladder is disposed and the second ladder You may provide the 2nd platform which follows the said 2nd scaffold between the wall surfaces which face the stern side of a 1st wall part.
By comprising in this way, the length of one 2nd ladder can fully be shortened rather than the case where it forms so that a 2nd ladder may be covered over all the 2nd scaffolds. Therefore, even if the worker falls on the second platform by stepping off the foot when the second ladder is raised or lowered, the height of the fall can be kept low. As a result, damage to the operator can be minimized.

According to the fourth aspect of the present invention, in the second or third aspect, the ship may be provided such that at least a part of the first platform and the second platform can be opened and closed.
By configuring in this way, for example, when an operator falls in the cargo hold, by opening all the first platforms arranged in the vertical direction among the first platforms, the bow of the second wall portion The space between the side wall and the first scaffold can be used as a rescue route to lift the worker to the upper deck. Similarly, by opening all the second platforms that are lined up and down in the second platform, the space between the stern side wall of the first wall and the second scaffold can be moved to the upper deck. It can be used as a rescue route for lifting.

  According to the ship described above, it is possible to reduce the load on the worker who performs the inspection work while suppressing the decrease in the tank capacity.

It is a figure which shows schematic structure of the ship in embodiment of this invention. It is sectional drawing of the partition wall which follows the II-II line of FIG. It is the figure which looked at the partition wall in embodiment of this invention from the bow side. It is the figure which looked at the partition wall in embodiment of this invention from the stern side. It is the perspective view which looked at the partition wall in embodiment of this invention from the bow side. It is the perspective view which looked at the partition wall in embodiment of this invention from the stern side.

Next, a ship according to an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a diagram showing a schematic configuration of a ship according to an embodiment of the present invention.
The ship 1 of this embodiment is an LPG carrier ship that carries LPG (liquefied petroleum gas). In order to transport more LPG, the ship 1 can be stored in the cargo tank 3 in a state where the LPG is cooled and liquefied to reduce the volume. The cargo tank 3 is provided with a heat insulating material on its outer surface.

  As shown in FIG. 1, a plurality of cargo holds 4 are formed inside the hull 2 of the ship 1. These cargo holds 4 are spaces for accommodating the cargo tanks 3. A plurality of these cargo holds 4 are provided in a row in the bow-stern direction. Cargo holds 4 that are adjacent in the fore-and-aft direction are partitioned by a partition wall 6 in the fore-and-aft direction. The cargo hold 4 in this embodiment is formed below the upper deck 5 of the hull 2. In FIG. 1, the bow-stern direction of the hull 2 is indicated by an arrow, and the bow side is “F” and the stern side is “R”, respectively.

FIG. 2 is a cross-sectional view of the partition wall taken along line II-II in FIG.
As shown in FIG. 2, the partition wall 6 includes a wall portion 7, a support portion 8, a scaffold portion 9, and a ladder portion 10.
The wall portion 7 includes a first wall portion 7A and a second wall portion 7B.
7 A of 1st wall parts are formed in the plate shape extended in a ship width direction and an up-down direction.
The second wall portion 7B is formed in a plate shape parallel to the first wall portion 7A. The second wall portion 7B is formed at a position different from the first wall portion 7A in the ship width direction. The second wall portion 7B in this embodiment is formed between the two first wall portions 7A arranged in the ship width direction, and is located on the stern side with respect to the first wall portion 7A. The distance in the fore-and-aft direction between the first wall portion 7A and the second wall portion 7B in this embodiment is set to be equal to the length in the fore-and-aft direction of the first support portion 8A and the second support portion 8B described later. Has been.

  The support portion 8 is a so-called small aggregate that ensures the rigidity of the partition wall 6. The support portion 8 includes a first support portion 8A and a second support portion 8B.

FIG. 3 is a view of the partition wall according to the embodiment of the present invention as viewed from the bow side. FIG. 4 is a view of the partition wall according to the embodiment of the present invention as seen from the stern side.
As shown in FIGS. 2 and 3, the first support portion 8A protrudes from the wall surface 11 facing the stern side of the first wall portion 7A, and a plurality of first support portions 8A are provided at intervals in the ship width direction. These first support portions 8 </ b> A are formed so as to extend in the vertical direction along the wall surface 11. The first support portion 8A includes a main body portion 13A extending in the fore-and-aft direction and a tip end portion 14A extending in the ship width direction, and is formed in a T-shaped cross section. In these first support portions 8A, the base portion of the main body portion 13A is fixed to the wall surface 11 by welding or the like.

  As shown in FIGS. 2 and 4, the second support portion 8B protrudes from the wall surface 12 facing the bow side of the second wall portion 7B, and a plurality of second support portions 8B are provided at intervals in the ship width direction. These second support portions 8 </ b> B are formed to extend in the vertical direction along the wall surface 12. The second support portion 8B includes a main body portion 13B extending in the bow-stern direction and a tip portion 14B extending in the ship width direction, and is formed in a T-shaped cross section. In these second support portions 8B, the base portion of the main body portion 13B is fixed to the wall surface 12 by welding or the like. In FIG. 3 and FIG. 4, illustration of the scaffold part 9 is omitted for convenience of illustration.

  In this embodiment, the second wall portion 7B described above is connected to the first wall portion 7A via the support portion 8. Further, in this embodiment, two second support portions 8B, which are sufficiently smaller than the number of first support portions 8A installed, are provided at intervals in the ship width direction. Here, the first support portion 8A and the second support portion 8B in this embodiment are formed in a part of the partition wall 6 in the vertical direction, more specifically, in a portion excluding the lower portion of the partition wall 6. Is illustrated. However, the range in the vertical direction in which the first support portion 8A and the second support portion 8B are formed is not limited to the above-described range, and for example, may be formed so as to extend across the entire vertical direction of the partition wall 6. .

  As shown in FIG. 3, the wall portion 7 </ b> C is formed so as to go around the first support portion 8 </ b> A continuously to the second wall portion 7 </ b> B. In the wall portion 7C, the wall surface 16a facing the stern side of the first support portion 8A is flush with the surface 17 facing the stern side of the tip portion 14A of the first support portion 8A, both above and below the first support portion 8A. ing. The wall portion 7C has a concave arc portion 18 between the first support portions 8A adjacent in the ship width direction. That is, these arc portions 18 form a long hole extending in the vertical direction between the tip portions 14A of the first support portions 8A adjacent in the ship width direction.

  As shown in FIG. 4, similarly to the wall portion 7 </ b> C, a wall portion 7 </ b> D is formed continuously around the first wall portion 7 </ b> A so as to go around the second support portion 8 </ b> B. The wall portion 7D has a wall surface 15a facing the bow side, both above and below the second support portion 8B, flush with the surface 19 facing the bow side of the tip portion 14B of the second support portion 8B. ing. Similarly to the wall portion 7C, the wall portion 7D has a concave arc portion 20 between the second support portions 8B adjacent in the ship width direction. That is, a long hole extending in the vertical direction is also formed between the distal end portions 14B of the second support portions 8B adjacent in the ship width direction by the arc portions 20.

FIG. 5 is a perspective view of the partition wall according to the embodiment of the present invention as viewed from the bow side. FIG. 6 is a perspective view of the partition wall according to the embodiment of the present invention as viewed from the stern side.
The scaffold portion 9 is configured such that an operator can mainly walk and move in the horizontal direction during maintenance such as inspection of the heat insulating material of the cargo tank 3. The scaffold part 9 includes a first scaffold part 9A and a second scaffold part 9B.

  As shown in FIGS. 2 and 5, the first scaffold portion 9A is supported by a wall surface 15 facing the bow side of the first wall portion 7A and a second support portion 8B. The first scaffold portion 9A is formed in a plate shape that is long in the ship width direction, and is provided so as to protrude horizontally from the first wall portion 7A toward the bow side. A plurality of first scaffold portions 9A are provided at predetermined intervals in the vertical direction, that is, in the height direction of the cargo hold 4.

  As shown in FIGS. 2 and 6, the second scaffold portion 9B is provided so as to be symmetric with the first scaffold portion 9A described above in the bow-stern direction. The second scaffold portion 9B is supported by the wall surface 16 (see FIG. 2) facing the stern side of the second wall portion 7B and the first support portion 8A. Similarly to the first scaffold portion 9A, the second scaffold portion 9B is formed in a plate shape that is long in the ship width direction, and is provided so as to protrude horizontally from the second wall portion 7B toward the stern side. A plurality of second scaffold portions 9 </ b> B are provided at intervals in the vertical direction, that is, the vertical direction of the cargo hold 4.

  The first scaffold portion 9A and the second scaffold portion 9B are movable by an operator and have a width dimension W1 (for example, about 400 mm) so that the dimension in the bow-stern direction is as small as possible. Is set. In addition, the first scaffold portion 9A and the second scaffold portion 9B ensure a slight gap (for example, about 200 mm) between the cargo hold 4 and the cargo tank 3 in the horizontal direction. Has been.

  The above-described cargo hold 4 is formed with a side scaffold (not shown). The side scaffolding portions are fixed to the inner surfaces (not shown) of both side walls of the hull 2 that connect the partition walls 6 adjacent in the bow-tail direction. In one cargo hold 4, the side scaffold portion is formed in a plate shape that is continuous with the first scaffold portion 9 </ b> A disposed on the stern side and the second scaffold portion 9 </ b> B disposed on the bow side. A plurality of side scaffolding portions are provided at intervals in the vertical direction, and connect the first scaffolding portion 9A and the second scaffolding portion 9B arranged at the same height. That is, the worker can make a round around the cargo tank 3 by moving on the first scaffold 9A, the side scaffold 9B, and the second scaffold 9B, which are arranged at the same height. It can be done.

As shown in FIGS. 2, 5, and 6, the ladder unit 10 includes a first ladder unit 10 </ b> A and a second ladder unit 10 </ b> B.
As shown in FIG. 5, a plurality of first ladder portions 10A are arranged between the first scaffold portion 9A and the wall surface 12 facing the bow side of the second wall portion 7B, and each extend in the vertical direction. The first ladder portion 10A in this embodiment is installed so as to cross between the first scaffold portions 9A adjacent in the vertical direction so that the operator can move between the first scaffold portions 9A adjacent in the vertical direction. Has been. Further, the first ladder portion 10A includes the main body portion 13B of the second support portion 8B and the second support portion 8B between the first scaffold portion 9A and the wall surface 12 facing the bow side of the second wall portion 7B. Are fixed to the main body portion 13B of the first support portion 8A adjacent in the ship width direction.

  The first ladder portions 10A adjacent in the vertical direction are arranged at different positions in the ship width direction in which the first scaffold portion 9A extends. The plurality of first ladder portions 10A in this embodiment are installed so that the first ladder portions 10A arranged adjacent to each other in the vertical direction are at the same position in the ship width direction in which the first scaffold portion 9A extends. ing. Further, among the plurality of first ladder portions 10A in this embodiment, the first ladder portion 10A arranged at the uppermost position is connected to an opening (not shown) formed in the upper deck 5, and the upper deck When the operator descends the first ladder portion 10A from 5 through the opening, it is possible to move onto the first scaffold portion 9A arranged at the uppermost position.

  As shown in FIG. 6, a plurality of second ladder portions 10B are arranged between the second scaffold portion 9B and the wall surface 11 facing the stern side of the first wall portion 7A, and each extend in the vertical direction. Similarly to the first ladder portion 10A, the second ladder portion 10B in this embodiment is a second scaffold portion adjacent in the vertical direction so that the operator can move between the second scaffold portions 9B adjacent in the vertical direction. It is installed to cross between 9B. Further, the second ladder portion 10B is fixed to the main body portion 13A of the first support portion 8A between the second scaffold portion 9B and the wall surface 11 facing the stern side of the first wall portion 7A.

  The second ladder portions 10B adjacent in the vertical direction are arranged at different positions in the ship width direction in which the second scaffolding portion 9B extends, like the first ladder portion 10A. The plurality of second ladder portions 10B in this embodiment are installed so that the second ladder portions 10B arranged adjacent to each other in the vertical direction are at the same position in the ship width direction in which the second scaffold portion 9B extends. ing. Furthermore, the 2nd ladder part 10B arrange | positioned uppermost among the several 2nd ladder parts 10B in this embodiment is connected to the opening part (not shown) formed in the upper deck 5, and upper deck When the operator descends the second ladder portion 10B from 5 through the opening, it is possible to move onto the second scaffold portion 9B disposed at the uppermost position.

  The openings formed in the upper deck 5 described above are individually formed by the first ladder portion 10A and the second ladder portion 10B. In the above-described embodiment, the plurality of first ladder portions 10A are all installed in the same direction in the ship width direction with respect to the first support portion 8A, and similarly, the plurality of second ladder portions 10B are the second The case where all were installed in the same direction by the ship width direction with respect to the support part 8B was illustrated. However, the direction in which the first ladder portion 10A and the second ladder portion 10B are installed is not limited to the above-described direction.

  As shown in FIG. 5, a first platform 22 is provided between the first scaffold portion 9 </ b> A where the first ladder portion 10 </ b> A is disposed and the wall surface 12 facing the bow side of the second wall portion 7 </ b> B. . These first platforms 22 are formed in a plate shape so as to be continuous with the first scaffold portion 9A. The first platform 22 extends from the first scaffold 9A toward the second wall 7B, in other words, toward the stern. These first platforms 22 are spaces in which the lower portions of the plurality of first ladder portions 10A are respectively arranged, in other words, two second support portions 8B, second wall portions 7B, which are adjacent in the ship width direction, At least a part of the space defined by the scaffold portion 9A is vertically closed. On the first platform 22, an operator who uses the first ladder portion 10A stands. Thereby, the worker can easily move between the first scaffold portion 9A and the first ladder portion 10A.

  As shown in FIG. 6, the second platform 23 is provided between the second scaffolding portion 9B where the second ladder portion 10B is disposed and the wall surface 11 facing the stern side of the first wall portion 7A. . These second platforms 23 are formed in a plate shape so as to be continuous with the second scaffold portion 9B. The second platform 23 extends from the second scaffold 9B toward the first wall 7A, in other words, toward the bow. These second platforms 23 are spaces in which the lower portions of the plurality of second ladder portions 10B are respectively arranged, in other words, two first support portions 8A, a first wall portion 7A, and a second wall that are adjacent in the ship width direction. At least a part of the space defined by the scaffold 9B is vertically closed. On the second platform 23, as with the first platform 22, an operator who uses the second ladder unit 10 </ b> B is set up. Thereby, the worker can easily move between the second scaffold part 9B and the second ladder part 10B.

  Here, although illustration is omitted, a handrail extending in the ship width direction is fixed to the second support portion 8B above the first scaffold part 9A where the first platform 22 is not arranged in the ship width direction. Yes. Similarly, although not shown, a handrail extending in the ship width direction is fixed to the first support portion 8A above the second scaffold part 9B where the second platform 23 is not arranged in the ship width direction. ing.

  Among the plurality of first platforms 22, the first platform 22 disposed at a predetermined position in the ship width direction is provided so as to be swingable upward via a hinge or the like. That is, a rescue route penetrating in the vertical direction can be formed between the second support portions 8B by opening all the first platforms 22 by swinging upward. Although not shown, this rescue route reaches the bottom of the cargo hold 4 through the inside of the partition wall 6. With this rescue route, for example, an operator who is in poor physical condition in the cargo hold 4 can be quickly pulled up from the bottom of the cargo hold 4 to the upper deck 5 using a rope or the like.

  Similarly, among the plurality of second platforms 23, the second platforms 23 arranged at predetermined positions in the ship width direction are provided so as to be swingable upward via hinges or the like. That is, a rescue route penetrating in the vertical direction can be formed between the second support portions 8B by opening all the swingable second platforms 23 by swinging upward.

That is, in the ship 1 of the above-described embodiment, the second wall portion 7B of the partition wall 6 is located on the stern side of the first wall portion 7A at a position in the ship width direction different from the first wall portion 7A. Furthermore, the first support portion 8A is provided so as to protrude from the wall surface 11 facing the stern side of the first wall portion 7A, and the second support portion 8B protrudes from the wall surface 12 facing the bow side of the second wall portion 7B. To be provided.
Therefore, according to the above-described embodiment, the first support portion 8A is provided on the stern side and the second support portion 8B is provided on the bow side without increasing the thickness dimension of the partition wall 6 in the stern direction. Can do. Furthermore, the first ladder portion 10A is provided between the wall surface 12 facing the bow side of the second wall portion 7B and the first scaffold portion 9A, and the wall surface 11 facing the stern side of the first wall portion 7A and the second scaffold portion. A second ladder portion 10B can be provided between 9B and 9B. Therefore, it is not necessary to provide a notch for installing the ladder portion 10 with respect to the first scaffold portion 9A and the second scaffold portion 9B. As a result, it is possible to reduce the load on the operator due to the foot confirmation during the inspection work while suppressing the capacity of the cargo tank 3 from decreasing due to the increase in the thickness of the partition wall 6.

  Furthermore, in the embodiment described above, a plurality of first scaffold portions 9A are provided in the vertical direction of the cargo hold 4, and the first ladder portion 10A is provided so as to cross between the first scaffolds adjacent in the vertical direction. ing. Furthermore, the first ladder portions 10A adjacent in the vertical direction are arranged so as to be shifted from each other in the extending direction of the first scaffold portion 9A. In addition, a first platform 22 that is continuous with the first scaffold portion 9A is provided between the first scaffold portion 9A where the first ladder portion 10A is disposed and the wall surface 12 facing the bow side of the second wall portion 7B. .

  Therefore, the length of one first ladder portion 10A can be made sufficiently shorter than when the first ladder portion 10A is formed so as to extend over all the first scaffold portions 9A in the vertical direction. Therefore, even if the operator falls on the first platform 22 by stepping off the first ladder portion 10A when moving up and down the first ladder portion 10A, the falling height can be kept low. As a result, damage to the operator can be minimized.

  Similarly, in the embodiment described above, a plurality of second scaffold portions 9B are provided in the vertical direction of the cargo hold 4, and the second ladder portion 10B is provided so as to cross between the second scaffolds adjacent in the vertical direction. It has been. Furthermore, the second ladder portions 10B adjacent in the vertical direction are arranged so as to be shifted from each other in the extending direction of the second scaffold portion 9B. Moreover, the 2nd platform 23 continued from the 2nd scaffold part 9B is provided between the 2nd scaffold part 9B by which the 2nd ladder part 10B is arranged, and the wall surface 11 which faces the stern side of the 1st wall part 7A. .

  Therefore, the length of one second ladder portion 10B can be made sufficiently shorter than when the second ladder portion 10B is formed so as to extend over all the second scaffold portions 9B in the vertical direction. Therefore, even if an operator falls on the second platform 23 by stepping off the foot when the second ladder portion 10B is raised or lowered, the height of the fall can be kept low. As a result, damage to the operator can be minimized.

  In addition, when an operator falls down in the cargo hold 4, the first platform 22 disposed at the same position in the ship width direction is opened in the first platform 22, so that the bow side of the second wall portion 7 </ b> B is opened. The space between the wall surface 12 and the first scaffold portion 9A can be used as a rescue route for lifting the worker to the upper deck 5. Similarly, by opening all the second platforms 23 arranged at the same position in the ship width direction among the second platforms 23, the space between the wall 11 on the stern side of the first wall portion 7A and the second scaffold portion 9B. This space can be used as a rescue route for lifting an operator up to the upper deck 5.

Further, as compared with the case where any one of the first scaffolding portion 9A and the second scaffolding portion 9B is directly supported by the wall portion 7 of the partition wall 6, the swinging necessary for the rescue route is possible. The number of simple members (platforms) can be reduced. Therefore, the number of parts can be halved.
Furthermore, rescue routes can be easily provided on both the bow side and the stern side of the partition wall 6. Therefore, safety can be improved.

  The present invention is not limited to the above-described embodiment, and includes various modifications made to the above-described embodiment without departing from the spirit of the present invention. That is, the specific shapes, configurations, and the like given in the embodiment are merely examples, and can be changed as appropriate.

  For example, in the embodiment described above, the first ladder portion 10A is formed so as to extend between the first scaffold portions 9A adjacent in the vertical direction, and the second ladder portion 10B is adjacent in the vertical direction. The case where it is formed so as to cross between the portions 9B has been described as an example. However, the first ladder portion 10A is formed so as to cross between a predetermined number of three or more first scaffold portions 9A, and the second ladder portion 10B is set to a predetermined number of three or more. You may form so that between the 2nd scaffold parts 9B may be crossed.

Furthermore, in embodiment mentioned above, the case where the 2nd wall part 7B was distribute | arranged between the two 1st wall parts 7A in the ship width direction was demonstrated. However, the first wall portion 7A may be disposed between the two second wall portions 7B.
Moreover, in embodiment mentioned above, although the case where only one 1st ladder part 10A was provided in the same height position was demonstrated, you may provide multiple. Similarly, a plurality of second ladder portions 10B may be provided at the same height position.

  Furthermore, the ship 1 of the above-described embodiment has been described by taking the case of an LPG carrier ship as an example. However, what the ship 1 stores and transports in the cargo tank 3 is not limited to LPG. Moreover, it is not restricted to a low temperature liquid like LPG. The present invention is also applicable to ships that carry high-temperature substances such as asphalt.

DESCRIPTION OF SYMBOLS 1 Ship 2 Hull 3 Cargo tank 4 Cargo hold 5 Upper deck 6 Partition wall 7 Wall part 7A First wall part 7B Second wall part 7C Wall part 7D Wall part 8 Support part 8A First support part 8B Second support part 9 Scaffolding Part 9A First scaffold part 9B Second scaffold part 10 Ladder part 10A First ladder part 10B Second ladder part 11 Wall surface 12 Wall surface 13A Main body part 13B Main body part 14A Front end part 14B Front end part 15 Wall surface 15a Wall surface 16 Wall surface 16a Wall surface 17 18 Arc part 19 Surface 20 Arc part 22 First platform 23 Second platform

Claims (4)

A hull with a cargo hold inside,
A partition wall that divides the cargo hold in the bow-stern direction,
The partition wall is
A first wall,
A second wall portion located at the stern side of the first wall portion and at a position different from the first wall portion in the width direction;
A first support provided to protrude from the wall facing the stern side of the first wall,
A second support provided to protrude from the wall facing the bow side of the second wall,
A first scaffold supported by the wall surface facing the bow side of the first wall portion and the second support portion;
A second scaffold supported by the wall facing the stern side of the second wall and the first support;
A first ladder that is arranged between the first scaffold and a wall surface facing the bow side of the second wall portion and extends in the vertical direction;
A second ladder disposed between the second scaffold and a wall surface facing the stern side of the first wall portion and extending in the vertical direction;
Ship equipped with. A plurality of the first scaffolds are provided in the vertical direction of the cargo hold,
The first ladder is
A predetermined number of the first scaffolds are provided across the up and down direction;
The first ladders adjacent in the vertical direction are arranged to be shifted from each other in the extending direction of the first scaffold,
The ship according to claim 1, further comprising a first platform continuous to the first scaffold between the first scaffold on which the first ladder is arranged and a wall surface facing the bow side of the second wall. A plurality of the second scaffolds are provided in the vertical direction of the cargo hold,
The second ladder is
Provided to cross a predetermined number of the second scaffolds,
The second ladders adjacent in the up-down direction are arranged to be shifted from each other in the extending direction of the second scaffold,
The ship according to claim 1, further comprising a second platform continuous to the second scaffold between the second scaffold on which the second ladder is disposed and a wall surface facing the stern side of the first wall. .   The ship according to claim 2 or 3, wherein at least a part of the first platform and the second platform is provided to be openable and closable.

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