Cargo vessel

Abstract

To provide a cargo vessel capable of preventing damage to a hold curtain by foreign substance such as a part of a cargo including scraps stored in a hold in a state with a hatchway opened by having the hold curtain for opening / closing the hatchway of the hold.SOLUTION: The cargo vessel includes: a storage unit 15 that is provided on a bow side of a hull 11 and can store a hold curtain 13 in a folded state; and guide rails 16 that are provided to extend to the storage unit 15 respectively on both sides in a width direction of the hull 11 to support both edge parts of the hold curtain 13 in the width direction, wherein the hold curtain 13 is stored folded into the storage unit 15 by being moved along the guide rail 16.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a cargo ship for transporting cargo.

Background Art

[0002] A bulk carrier is a cargo ship designed to load unpacked bulk cargo such as grain, ore, and cement into the ship's hold and transport it. As an example of such a cargo ship, or a cargo ship having a "curtain" inside the hold for the purpose of preventing rainwater and seawater from entering through the gaps in the steel lid covering the hatch from falling onto the cargo (commonly called a "general cargo ship" or a "steel ship"), the one described in Patent Document 1 is known. In this cargo ship, guide rails provided over the entire length on each of both sides in the longitudinal direction of the hatch inside the hold, a rope wound around rope rollers provided near both ends of each of these guide rails, and arranged to surround the periphery of the hatch along the guide rails, a single rope, a drum that can rotate forward and backward around which the single rope is wound for moving the single rope in both forward and reverse directions, a plurality of guide rollers rotatably inserted into each of the guide rails, a guide roller inserted into one side guide rail, a curtain wire attached between the guide roller inserted into the other side guide rail, and a curtain covering the hatch fastened to the curtain wire. One end of this curtain is fixed to one end of the hatch, the end guide roller on the other end side of the curtain is fixed to the rope, and the rope is inserted through the guide rollers other than the end guide roller.

[0003] In a cargo ship equipped with a curtain as described above, when extending the curtain folded on the bow side of the hatch to close the hatch, the drum is rotated in one direction. As a result, the rope moves in one direction, and the end guide rollers fixed to the rope move simultaneously in the guide rail toward the stern side. Therefore, the other end of the curtain is pulled toward the stern side, and via a plurality of curtain wires to which the curtain is fastened, the plurality of guide rollers move simultaneously one after another in the guide rail toward the stern side. Thus, the curtain is fully extended to close the hatch. By closing the hatch, it is possible to prevent the cargo stored in the cabin from getting wet by seawater, rainwater that has entered through the gaps in the hatch cover, or water droplets that have condensed on the back surface of the hatch cover, and to prevent quality degradation due to rusting, etc.

[0004] Also, when folding the extended curtain and opening the hatch, the drum is rotated in the direction indicating the other direction. As a result, the rope moves in the other direction, and the end guide fixed to the rope moves simultaneously in the guide rail toward the bow side. The plurality of guide rollers in the guide rail are pushed by the above-mentioned end guide rollers and move simultaneously one after another in the guide rail toward the bow side. Thus, the curtain moves toward the bow side while being sequentially folded for each curtain wire between the guide rollers, opening the hatch and assuming a folded state at the bow side of the cabin.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] By the way, in the cargo ship as described above, when the hatch is opened, the curtain (hold curtain) is folded on the bow side and left in the hold, so there is a risk that the curtain may be damaged by the cargo stored in the hold. In particular, when the cargo is loose cargo, the loose cargo is often loaded to fill the hold, so the risk of damage to the curtain increases due to the scrap of the loose cargo.

[0007] The present invention has been made in view of the above circumstances, and an object thereof is to provide a cargo ship capable of preventing a hold curtain for opening and closing the hatch of a hold from being damaged by foreign matters such as a part of the load including scrap stored in the hold when the hold curtain is opened and the hatch is opened.

Means for Solving the Problems

[0008] In order to achieve the above object, a cargo ship of the present invention is a cargo ship including a hull, a hold provided in the hull, and a hold curtain for opening and closing the hatch of the hold, a storage portion provided on the bow side and / or the stern side of the hull and capable of storing the hold curtain in a folded state, guide rails provided on both sides in the width direction of the hull so as to extend to the storage portion and movably support both edge portions in the width direction of the hold curtain, The hold curtain is characterized in that it moves along the guide rail and is folded and stored in the storage portion.

[0009] Here, one hold curtain for opening and closing the hatch of the hold is stored in the storage portion provided on the bow side or the stern side of the hull. When the length of the hold is long, etc., two upper and lower hold curtains are used, and one hold curtain is stored in one storage portion, and the other hold curtain is stored in the other storage portion. Also, two sets of guide rails are provided, one set of guide rails is arranged to extend from approximately the mid - longitudinal position of the cabin to one storage part, and the other set of guide rails is arranged to extend from approximately the mid - longitudinal position of the cabin to the other storage part.

[0010] In the present invention, when opening and opening the hatch of the cabin, the hold curtain moves along the guide rail and is folded and stored in the storage part, so it is not left in the cabin. Therefore, it is possible to prevent the hold curtain from being damaged by foreign objects such as part of the load including the scrap stored in the cabin. Also, since the hold curtain is not left in the cabin, the cabin can be filled with the load.

[0011] Also, in the above - mentioned configuration of the present invention, the opening of the storage part may be provided with a slide door that can be opened and closed by sliding up and down.

[0012] Also, in the above - mentioned configuration of the present invention, the slide door may move up and down by a slide door drive mechanism.

[0013] The slide door has a size necessary to close the opening of the storage part and automatically slides up and down by a slide door drive mechanism having a winch, a wire, a pulley, etc. The slide door closes the opening in the upper position and opens the opening in the lower position.

[0014] According to such a configuration, by closing the opening of the storage part where the hold curtain is stored with the slide door, it is possible to prevent the load from entering the storage part from the opening and prevent damage to the hold curtain stored in the storage part. In particular, when the load is unpacked cargo, if the opening is left open, there is a risk that foreign objects such as part of the unpacked cargo including scrap may enter the storage part from the opening, but by closing the opening with the slide door, this risk is eliminated. Also, by opening the opening with a sliding door, the hold curtain stored in the storage section can be pulled out from the storage section to the cabin side. Furthermore, since the sliding door can be automatically moved up and down by a sliding door drive mechanism, the opening and closing of the opening of the storage section becomes easy.

[0015] Also, in the above configuration of the present invention, the guide rail may be provided outside the cabin at a position sandwiching the cabin in the width direction of the hull.

[0016] When the guide rail is provided inside the cabin, if foreign matters such as a part of the load including scraps stored in the cabin enter the guide rail, not only the movement of the hold curtain will not be smooth, but also the guide rail may be damaged. Therefore, according to the above configuration, since the guide rail is provided outside the cabin, it is possible to prevent foreign matters from entering the guide rail from the cabin, and it is possible to prevent the smooth movement of the hold curtain and the damage of the guide rail.

[0017] Also, in the above configuration of the present invention, the guide rail is housed in a guide rail housing portion provided outside the cabin, support members that rotatably support rollers capable of rolling on the guide rail are respectively attached to both edge portions in the width direction of the hold curtain, a slit for inserting the support member into the guide rail housing portion is provided in a wall portion forming the guide rail housing portion, and the width of this slit may be 10 mm to 30 mm.

[0018] According to such a configuration, since the guide rail is housed in the guide rail housing portion provided outside the cabin, the guide rail can be protected. In addition, since support members that rotatably support rollers capable of rolling on guide rails are respectively attached to both edge portions in the width direction of the hold curtain, as the rollers roll on the guide rails, the support members move smoothly along the guide rails, and thereby, the hold curtain can be moved smoothly along the guide rails.

[0019] Further, since the width of the slit provided in the wall portion forming the guide rail housing portion is 10 mm to 30 mm, the support member can move along the guide rail without interfering with the edge portion of the slit and preventing foreign matters such as scraps from entering the guide rail through the slit. Here, the reason for defining the width of the slit to be 10 mm to 30 mm is that if the width of the slit is less than 10 mm, there is a risk that the support member may hit and interfere with the edge portion of the slit due to dimensional errors of the guide rail and the support member, and if it exceeds 30 mm, there is a risk that foreign matters such as scraps may enter the guide rail through the slit.

[0020] In addition, in the above configuration of the present invention, a prevention sheet may be provided on the wall portion forming the guide rail housing portion so as to be slidable relative to the upper surface of the hold curtain to prevent foreign matters from entering the slit.

[0021] According to such a configuration, since the prevention sheet can prevent foreign matters from entering from the upper surface side of the hold curtain, the hold curtain can be moved smoothly along the guide rail.

[0022] In addition, in the above configuration of the present invention, a partition wall may be provided below the opening of the storage portion, and a loading and unloading port through which a loading vehicle can pass may be provided in the partition wall, and the loading and unloading port may be openable and closable by an opening and closing door.

[0023] According to such a configuration, by opening the loading and unloading port with the opening and closing door, it is possible to easily load into the cabin the fixing members and other members that support and fix the cargo in the cabin by the cargo handling vehicle from the loading and unloading port, and to easily unload the unnecessary members. By closing the loading and unloading port with the opening and closing door, it is possible to prevent the cargo handling vehicle and other members from entering the cabin during the transportation of the cargo and the like. In addition, when the cargo is unpacked cargo, by closing the loading and unloading port with the opening and closing door, it is possible to prevent the unpacked cargo from exiting the cabin through the loading and unloading port and going outside the cabin.

[0024] In addition, in the above configuration of the present invention, the opening and closing door may open and close the loading and unloading port by rotating up and down about the lower end of the opening and closing door by an opening and closing door drive mechanism.

[0025] According to such a configuration, the opening and closing door is rotated up and down about the lower end of the opening and closing door by the opening and closing door drive mechanism to open and close the loading and unloading port, so that the opening and closing of the loading and unloading port becomes easy.

Advantages of the Invention

[0026] According to the present invention, in the state where the hold curtain for opening and closing the hatch is open, since the hold curtain is folded and stored in the storage portion, it is possible to prevent the hold curtain from being damaged by foreign matters such as a part of the cargo including the scrap stored in the cabin.

Brief Description of the Drawings

[0027]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Figure 12

Figure 13

Figure 14

Figure 15

Figure 16

Embodiments for Carrying Out the Invention

[0028] Hereinafter, embodiments of the present invention will be described with reference to the drawings. Figs. 1 to 4 show the cargo ship of this embodiment. Fig. 1 is a perspective view of a main part schematically showing a state where the hatch of the hold is covered and closed by a hold curtain. Fig. 2 is a perspective view of a main part schematically showing a state where the hold curtain is stored in a storage part. Fig. 3 is a side view of a main part showing the hold. Fig. 4 is a plan view showing a schematic configuration of the cargo ship.

[0029] As shown in Figs. 1 to 4, the cargo ship 10 of this embodiment includes a hull 11, a hold 12 provided in the hull 11, and a hold curtain 13 for opening and closing a hatch 12a of the hold 12. A hatch coaming 14 (see Figs. 1 and 2) is provided at the upper end of the hatch 12a to prevent water from entering the hold 12. In Figs. 1 to 4, the direction of arrow A is the bow direction. Also, in Fig. 3, the description of the hold curtain 13 is omitted.

[0030] The cargo ship 10 also includes a storage part 15 capable of storing the hold curtain 13 in a folded state, and guide rails 16 for movably supporting both edge parts in the width direction of the hold curtain 13. The storage part 15 is provided on the bow side of the hull 11 and has a rectangular opening 15a that opens toward the hold 12. The opening 15a is provided substantially flush with the surface of a wall part 20 provided on the bow side of the hold 12. The guide rails 16 are provided on both sides in the width direction of the hull 11 so as to extend to the storage part 15 and are configured to movably support both edge parts in the width direction of the hold curtain 13. The hold curtain 13 moves along the guide rails 16 and is folded and stored in the storage part 15 (see Fig. 2).

[0031] Further, as shown in FIG. 4, the guide rail 16 is provided outside the cabin 12 at a position sandwiching the cabin 12 in the width direction of the hull 11. As shown in FIG. 5, this guide rail 16 is housed in a guide rail housing portion 17 provided outside the cabin 12 (the left side in FIG. 5). This guide rail 16 is erected in a state slightly inclined with respect to the horizontal plane on the inner surface of the wall portion 17a facing the cabin 12 among the wall portions forming the guide rail housing portion 17.

[0032] Further, support members 18 are respectively attached to both edge portions in the width direction of the hold curtain 13 (one edge portion is shown in FIG. 5). The support member 18 is inserted into a slit 19 formed in the wall portion 17a, and the main body portion 18a is housed in the guide rail housing portion 17. The main body portion 18a is formed in a substantially U-shaped cross section, and rollers 21 capable of rolling the guide rail 16 are rotatably attached to the inside of the main body portion 18a in the forward and reverse directions. Further, a cylindrical insertion portion 18b through which a wire 29 described later is inserted is fixed to the lower surface of the support member 18. Further, the base end portion of the support member 18 protrudes from the slit 19, and this protruding base end portion is attached to the edge of the hold curtain 13 by screwing.

[0033] The width h of the slit 19 is wider than the thickness of the base end portion of the support member 18 and is set to 10 mm to 30 mm. The reason for defining the width of the slit 19 to be 10 mm to 30 mm is that if the width of the slit 19 is less than 10 mm, the support member 18 may hit the edge of the slit 19 and interfere due to dimensional errors of the guide rail 16 and the support member 18, and if it exceeds 30 mm, foreign matters such as scraps may enter the guide rail 16 through the slit 19. Further, a prevention sheet 22 for preventing foreign matter from entering the slit 19 is provided on the wall portion 17a forming the guide rail housing portion 17 so as to be slidable relative to the upper surface of the hold curtain 13. This prevention sheet 22 is formed to be curved in a cross-sectional view and extends along the length direction of the hold curtain 13.

[0034] In addition, the hold curtain 13 is automatically moved along the guide rail 16 by the hold curtain drive mechanism 25 and folded and stored in the storage section 15. As schematically shown in FIGS. 6 and 7, the hold curtain drive mechanism 25 has a vertical pulley 26 provided on the stern side and a winch drum 27 provided on the bow side. The winch drum 27 is installed on the back side of the storage section 15 (see FIGS. 1, 2, and 4). A wire 29 wound around the winch drum 27 extends toward the pulley 26 and is wound around the pulley 26. As described above, the roller 21 is capable of rolling on the guide rail 16, and the hold curtain 13 is attached to a support member 18 that supports the roller 21.

[0035] Also, as shown in FIG. 7, a plurality of horizontal pulleys 26a and a plurality of vertical pulleys 26b are arranged between the leading pulley 26 and the winch drum 27, and the wire 29 is wound around these pulleys 26a and 26b, thereby changing the direction of the wire 29. Also, as shown in FIG. 8, the wire 29 is inserted through the insertion portion 18b of the support member 18, and the insertion portion 18b of the leading support member 18 is fixed to the wire 29 by fastening members 18c, 18c such as clips. The trailing support member 18 is fixed to one end or the vicinity of the bow side of the guide rail 16 in the storage section 15 (see FIG. 6).

[0036] In such a hold curtain drive mechanism configured as described above, as shown in FIGS. 6 and 7, when the winch drum 27 is rotated in one direction so that the pulleys 26 and 26 rotate counterclockwise, the wire 29 moves in the direction of the arrow accordingly. As a result, the leading support member 18 moves in the direction of the arrow, and the support members 18 behind it move while being pulled in the direction of the arrow by the hold curtain 13. Thereby, the hold curtain 13 moves in the direction of the arrow while being deployed from the folded state, exits from the storage section 15 (see FIGS. 1 and 2), and closes the hatch 12a of the cabin 12.

[0037] On the other hand, when the winch drum 27 is rotated in the other direction so that the pulleys 26, 26 rotate clockwise, accordingly, the wire 29 moves in the direction opposite to the arrow direction. As a result, the leading support member 18 moves in the direction opposite to the arrow direction, and the support members 18 behind it move while being pushed in the direction opposite to the arrow direction by the leading support member. Accordingly, the hold curtain 13 moves in the direction opposite to the arrow direction while being folded, and is stored in the storage portion 15 (see FIGS. 1 and 2) in a folded state.

[0038] Further, as shown in FIGS. 1 and 2, the cargo ship of the present embodiment includes a slide door 30 that can be opened and closed by sliding up and down the opening 15a of the storage portion 15. The slide door 30 is formed of an iron plate having a rectangular shape in front view, and the vertical and horizontal lengths are slightly longer than the vertical and horizontal lengths of the opening 15a.

[0039] FIG. 9 is a front view showing a state in which the opening 15a of the storage portion 15 is closed by the slide door 30, and shows the left half of the opening 15a. FIG. 10 is a view taken along the line A-A in FIG. 9, and FIG. 11 is a view taken along the line B-B in FIG. 9. Note that FIG. 11 shows a state in which the opening 15a is closed. The slide door 30 is automatically slid up and down by a slide door drive mechanism 31. That is, first, guide rails 31a are provided vertically on both the left and right sides (the left side in FIG. 9) of the opening 15a, and the slide door 30 can slide up and down along the guide rails 31a. When the slide door 30 is in the uppermost position, the opening 15a is closed, and when it is in the lowermost position, the opening 15a is opened.

[0040] In addition, an electric winch 32 is fixed to the floor surface (the floor surface of the second deck) 12c of the portion below the opening 15a. Four electric winches 32 are arranged at predetermined intervals in the width direction (the left-right direction in FIG. 9) of the slide door 30. Note that FIG. 9 shows two of the four electric winches 32.

[0041] Further, a pulley 33 is rotatably attached to the frame above the opening 15a, and a wire 34 wound and unwound by an electric winch 32 is wound around the pulley 33. The tip of the wire 34 is fixed to the sliding door 30. As shown in FIG. 11, two pulleys 33 are provided at a distance in the direction orthogonal to the opening 15a (the left - right direction in FIG. 11), and an electric winch 32 is provided below the pulley 33 on the back side (the right side in FIG. 11). Therefore, when the electric winch 32 winds the wire 34 wound around the pulleys 33, 33, the sliding door 30 slides upward accordingly, and when the wire 34 is unwound, the sliding door 30 slides downward accordingly. As shown in FIG. 10, when the sliding door 30 slides downward and is in the lower position, the opening 15a is opened, and as shown in FIG. 11, when the sliding door 30 slides upward and is in the upper position, the opening 15a is closed.

[0042] Further, in the present embodiment, as shown in FIG. 12, holding means 35 for holding the sliding door 30 in the upper position is provided. The holding means 35 includes a locking hook 36 and a fall - prevention hook 37 provided on the upper end surface of the wall portion 20a located below the opening 15a, and a plurality of these locking hooks 36 and fall - prevention hooks 37 are provided at a predetermined interval in the width direction of the wall portion 20a (the left - right direction in FIG. 12(a)).

[0043] The locking hook 36 prevents the sliding door 30 from deviating in the plane direction when the sliding door 30 is in the upper position. The upper part of the sliding door 30 is pressed from the front side by a vertical frame 36 fixed to the upper end side of the opening 15a as shown in FIG. 11. Further, the fall - prevention hook 37 fits into the lower part of the sliding door 30 to prevent the sliding door 30 from falling when the sliding door 30 is in the upper position.

[0044] As shown in Fig. 12(b), on the upper end surface of the wall portion 20a, receiving members 36a, 36a are coaxially fixed with a spacing in their axial directions at positions where the locking clevis 36 is disposed. Further, on the back surface of the slide door 30, a receiving member 36b is fixed coaxially with the receiving members 36a, 36a. The locking clevis 36 is inserted through the receiving members 36a, 36a, 36b and is rotatable in both forward and reverse directions about the axis. Also, the locking clevis 36 has two locking bars 36c, 36d that extend in a direction perpendicular to its axis and are provided with a spacing in the axial direction. The receiving member 36b has a fitting groove 36e into which the locking bar 36d fits.

[0045] Then, as shown in Fig. 12(b), by rotating the locking clevis 36 such that the locking bar 36c abuts against the end face of the receiving member 36a on the side closer to the receiving member 36b and the locking bar 36d is fitted into the fitting groove 36e of the receiving member 36b, deviation of the slide door 30 in the plane direction is prevented. Also, by rotating the locking clevis 36 from this locked position to remove the locking bar 36d from the fitting groove 36e, and after axially opposing the locking bar 36c to the grooves 36f, 36f formed to extend axially in the receiving members 36a, 36a, the locking of the slide door 30 is released by pulling out the locking clevis 36 from the receiving member 36b, and the slide door 30 becomes slidable downward.

[0046] Also, as shown in Fig. 12(c), on the upper end surface of the wall portion 20a, receiving members 37a, 37b are coaxially fixed with a spacing in their axial directions at positions where the fall prevention clevis 37 is disposed. Further, on the back surface of the slide door 30, a receiving member 37c is fixed coaxially with the receiving members 37a, 37b. The fall prevention clevis 37 is inserted through the receiving members 37a, 37b, 37c and is rotatable in both forward and reverse directions about the axis. Also, the fall prevention clevis 37 has a locking bar 37d that extends in a direction perpendicular to its axis.

[0047] Then, as shown in FIG. 12(c), the anti-drop pawl 37 is rotated so that the locking bar 37d abuts against the end face of the receiving member 37b, and the anti-drop pawl 37 is inserted into the receiving member 37c in a state where it is prevented from being pulled out from the receiving member 37c, thereby preventing the slide door 30 from dropping. Further, when the anti-drop pawl 37 is rotated from this anti-drop position to disengage the locking bar 37d from the end face of the receiving member 37b and the anti-drop pawl 37 is pulled out from the receiving member 37c, the slide door 30 can slide downward.

[0048] Also, in the present embodiment, as shown in FIGS. 1 and 2, a wall portion (partition wall) 20 is provided below the opening 15a of the storage portion 15. A loading / unloading port 40 is provided in this partition wall 20. The loading / unloading port 40 is formed to a size that allows a cargo handling vehicle such as a forklift to pass through, and the lower end of the loading / unloading port 40 is substantially flush with the floor surface 12b of the cabin 12. Further, the loading / unloading port 40 can be opened and closed by an opening / closing door 41.

[0049] That is, as shown in FIG. 13, the opening / closing door 41 has a door body 41a formed of a rectangular plate-shaped iron plate and a reinforcing steel material 41b fixed to the front surface side of the door body 41a, and the reinforcing steel material 41b is arranged vertically and horizontally. Such an opening / closing door 41 opens and closes the loading / unloading port 40 by rotating up and down about the lower end portion of the opening / closing door 41 as an axis by an opening / closing door drive mechanism 42. That is, above the opening / closing door 41, pulleys 43a and 43b are rotatably provided, and a wire 44 is wound around these pulleys 43a and 43b. One end of the wire 44 is connected to the opening / closing door 41 via a connecting member 41c fixed to the upper end portion of the opening / closing door 41, and the other end is connected to an electric winch (not shown).

[0050] Also, as shown in Fig. 14, on the floor surface 12b, hinge portions 46, 46 are provided at positions facing the lower end portion of the opening / closing door 41 and spaced apart in the width direction of the opening / closing door 41, and the lower end portion of the opening / closing door 41 is connected to these hinge portions 46, 46. As a result, the opening / closing door 41 can be rotated up and down about the hinge portions 46, 46 as axes, and the loading / unloading port 40 can be opened and closed. Also, a stopper 47a is fixed to the back surface side (the right side in Fig. 14) of the opening / closing door 41 on the floor surface 12b, and this stopper 47a is in contact with the lower end portion of the back surface of the opening / closing door 41. Further, a stopper 47b is fixed to the wall portion located above the loading / unloading port 40 on the back surface side of the opening / closing door 41, and this stopper 47b is in contact with the upper end portion of the back surface of the opening / closing door 41. When the lower end portion of the back surface of the opening / closing door 41 comes into contact with the stopper 47a and the upper end portion of the back surface of the opening / closing door 41 comes into contact with the stopper 47b, the opening / closing door 41 is perpendicular to the floor surface 12b.

[0051] Then, the opening / closing door 41 rotates downward about the hinge portion 46 as an axis from a position perpendicular to the floor surface 12b toward the floor surface 12d side on the opposite side across the cabin 12 and the loading / unloading port 40, and the upper end portion of the opening / closing door 41 comes into contact with the floor surface 12d at the position where it rotates to the lowest position. As a result, the loading / unloading port 40 is opened. Also, from this open position, the opening / closing door 41 rotates about the hinge portion 46 as an axis, and when it rotates to the uppermost position, the upper end portion of the opening / closing door 41 comes into contact with the stopper 47b and the lower end portion of the opening / closing door 41 comes into contact with the stopper 47a. As a result, the loading / unloading port 40 is closed by the opening / closing door 41.

[0052] Also, a snatch pulley 48 is connected to the lower surface of the floor surface (the floor surface of the second deck) 11b above the floor surface 12d. This snatch pulley 48 is rotatably attached to the lower surface of the floor surface 11b on the warehouse side (the left side in Fig. 14) from the opening / closing door 41 in a state where the loading / unloading port 40 is closed. The warehouse is provided on the side opposite to the cabin 12 across the loading / unloading port 40. On one side, at the upper end of the opening / closing door 41, a snatching pulley 49 is rotatably connected via a connecting member 41c fixed to the upper end of the opening / closing door 41, and this snatching pulley 49 and the snatching pulley 48 are connected by a wire 49a.

[0053] Therefore, when the wire 44 is unwound by an electric winch (not shown) from the state where the opening / closing door 41 closes the loading / unloading port 40 in the vertical state, the upper end of the opening / closing door 41 is pulled forward by the snatching pulley 49 while the opening / closing door 41 rotates downward about the hinge portions 46, 46, and the wire 49a of the snatching pulley 49 is unwound. When the upper end of the opening / closing door 41 abuts against the floor surface 12d, the opening / closing door 41 becomes substantially horizontal and the loading / unloading port 40 is opened.

[0054] On the other hand, when the wire 44 is wound up by an electric winch (not shown) from the state where the opening / closing door 41 is substantially horizontal and the loading / unloading port 40 is opened, the upper end of the opening / closing door 41 is pulled upward by the snatching pulley 49 while the opening / closing door 41 rotates upward about the hinge portions 46, 46, and the wire 49a of the snatching pulley 49 is wound up. When the upper end of the opening / closing door 41 abuts against the stopper 47b and the lower end of the opening / closing door 41 abuts against the stopper 47a, the opening / closing door 41 becomes substantially vertical and the loading / unloading port 40 is closed by the opening / closing door 41.

[0055] Also, the opening / closing door 41 can be locked in the position where it closes the loading / unloading port 40. That is, as shown in FIG. 13, a plurality of locking portions 50 are provided at predetermined intervals along the peripheral edge of the loading / unloading port 40 on the wall portion 20 located outside the loading / unloading port 40. The locking portion 50 has a support portion 50a fixed to the wall portion 20 and a locking lever 50b rotatably attached to the support portion 50a in the forward and reverse directions about its axis.

[0056] Then, by rotating the lock lever 50b and pressing the peripheral edge of the opening / closing door 41 against the wall portion 20 at its tip, the opening / closing door 41 is locked when it is in the position closing the loading / unloading port 40. On the other hand, by rotating the lock lever 50b from this closed position and removing its tip from the wall portion 20, the lock of the opening / closing door 41 is released, and thereafter, the opening / closing door 41 can be rotated downward about the hinge portions 46, 46, that is, the loading / unloading port 40 can be opened.

[0057] As described above, according to this embodiment, when opening the hatch 12a of the cabin 12, the hold curtain 13 moves along the guide rail 16 and is folded and stored in the storage portion 15, so it is not left in the cabin 12. For this reason, it is possible to prevent the hold curtain 13 from being damaged by foreign matters such as part of the cargo including the scrap stored in the cabin 12 or a lifting tool for lifting the cargo. Also, since the hold curtain 13 is not left in the cabin 12, the cabin 12 can be filled with cargo.

[0058] Further, since the storage portion 15 is provided with a slide door 30 that can be opened and closed by sliding up and down the opening 15a of the storage portion 15, by closing the opening 15a of the storage portion 15 where the hold curtain 13 is stored with the slide door 30, it is possible to prevent the intrusion of cargo into the storage portion 15 from the opening 15a and prevent damage to the hold curtain 13 stored in the storage portion 15. In particular, when the cargo is loose cargo, if the opening 15a is left open, there is a risk that foreign matters such as part of the loose cargo including scrap may enter the storage portion 15 from the opening 15a, but by closing the opening 15a with the slide door 30, this risk is eliminated.

[0059] Further, since the guide rail 16 is provided outside the cabin 12 at a position sandwiching the cabin 12 in the width direction of the hull 11, it is possible to prevent foreign matters from entering the guide rail 16 from the cabin 12, and it is possible to prevent smooth movement of the hold curtain 13 and damage to the guide rail 16.

[0060] Furthermore, since the guide rail 16 is accommodated in the guide rail housing portion 17 provided outside the cabin 12, the guide rail 16 can be protected. In addition, since support members 18 that rotatably support rollers 21 capable of rolling on the guide rail 16 are respectively attached to both edge portions in the width direction of the hold curtain 13, as the rollers 21 roll on the guide rail 16, the support members 18 can move smoothly along the guide rail 16, and thereby, the hold curtain 13 can be moved smoothly along the guide rail 16.

[0061] Also, since the width of the slit 19 provided in the wall portion 17a forming the guide rail housing portion 17 is 10 mm to 30 mm, the support member 18 can move along the guide rail 16 without interfering with the edge portion of the slit 19 and preventing scraps from entering the guide rail 16 through the slit 19.

[0062] In addition, a prevention sheet 22 is provided on the wall portion 17a forming the guide rail housing portion 17 so as to be slidable relative to the upper surface of the hold curtain 13, thereby preventing foreign matter from entering the slit 19. Therefore, the prevention sheet 22 can prevent foreign matter from entering from the upper surface side of the hold curtain 13, and thus, the hold curtain 13 can move smoothly along the guide rail 16.

[0063] Furthermore, a partition wall 20 is provided below the opening 15a of the storage portion 15, and a loading and unloading port 40 through which a cargo handling vehicle can pass is provided in the partition wall 20. The loading and unloading port 40 can be closed by an opening and closing door 41. Therefore, a fixing member for supporting and fixing a load in the cabin 12 by a cargo handling vehicle and other members can be easily carried into the cabin 12 from the loading and unloading port 40, and unnecessary members can be easily carried out. In addition, when the load is unpacked cargo, by closing the loading and unloading port 40 with the opening and closing door 41, it is possible to prevent the unpacked cargo from exiting the cabin 12 through the loading and unloading port 40 and going outside the cabin.

[0064] In addition, in this embodiment, as shown in FIG. 5, it is configured to open and close a single hold curtain 13. However, when the length of the cabin 12 in the longitudinal direction of the hull increases with the enlargement of the hull 11, as shown in FIG. 15, two upper and lower hold curtains 13, 13 may be used. One hold curtain 13 is used to open and close the bow-side half of the hatch 12a of the cabin 12, and the other hold curtain 13 is used to open and close the stern-side half of the hatch 12a of the cabin 12.

[0065] In this case, as shown in FIG. 15, the guide rail housing portion 17 is extended in the vertical direction, and two upper and lower guide rails 16, 16 are arranged inside it. One hold curtain 13 is attached to a support member 18 that moves along one guide rail 16, and the other hold curtain 13 is attached to a support member 18 that moves along the other guide rail 16. Then, the storage portions 15 are provided on both the bow side and the stern side respectively. One guide rail 16 is arranged so as to extend from a substantially mid-position in the longitudinal direction of the cabin 12 to one storage portion 15, and the other guide rail 16 is arranged so as to extend from a substantially mid-position in the longitudinal direction of the cabin 12 to the other storage portion 15. One hold curtain 13 is stored in one storage portion 15, and the other hold curtain 13 is stored in the other storage portion 15.

[0066] Also, in this embodiment, as shown in FIG. 5, the guide rail 16 is housed in the guide rail housing portion 17 and provided. A slit 19 for inserting the support member 18 is formed in the wall portion 17a forming the guide rail housing portion 17 to prevent scraps in the cabin 12 from entering the guide rail 16 through the slit 19. However, when the cargo ship is mainly a ship for transporting steel materials, etc., since the cargo does not contact the guide rail, as shown in FIG. 16, without providing the guide rail housing portion 17, a T-shaped cross-section guide rail 56 is fixed to the wall portion 45 located outside the cabin 12, and the hold curtain 13 may be attached to a support member 18 that supports a roller 21 that rolls on this guide rail 56.

[0067] As described above, the embodiments of the present invention have been described with reference to the drawings. However, the present invention is not limited to the above-described embodiments and can include various modifications. For example, the above-described embodiments have been described in detail for easy understanding of the present invention, and are not necessarily limited to those having all the configurations described. Also, a part of the configuration of an embodiment can be replaced with another configuration, and another configuration can be added to the configuration of the embodiment. Further, for a part of the configuration of an embodiment, addition, deletion, or replacement with another configuration is possible.

Explanation of Reference Numerals

[0068] 10 Cargo ship 11 Hull 12 Cargo hold 12a Hatch 13 Hold curtain 15 Storage section 15a Opening 16, 56 Guide rail 17 Guide rail housing section 18 Support member 20 Wall section 22 Prevention sheet 30 Slide door 31 Slide door drive mechanism 40 Loading / unloading port 41 Opening / closing door 42 Opening / closing door drive mechanism

Claims

1. A cargo ship comprising a hull, a cabin provided in the hull, and a hold curtain for opening and closing a hatch of the cabin, wherein: a storage part provided on the bow side and / or the stern side of the hull, capable of storing the hold curtain in a folded state; guide rails provided on both sides in the width direction of the hull so as to extend to the storage part, for movably supporting both edge parts in the width direction of the hold curtain; and the hold curtain moves along the guide rails and is folded and stored in the storage part.

2. The cargo ship according to claim 1, further comprising a slide door capable of opening and closing by sliding up and down at an opening of the storage part.

3. The cargo ship according to claim 2, wherein the slide door moves up and down by a slide door drive mechanism.

4. The cargo ship according to claim 1, wherein the guide rails are provided at a position sandwiching the cabin in the width direction of the hull and outside the cabin.

5. The guide rails are housed in a guide rail housing part provided outside the cabin, support members for rotatably supporting rollers capable of rolling on the guide rails are respectively attached to both edge parts in the width direction of the hold curtain, a slit for inserting the support member into the guide rail housing part is provided in a wall part forming the guide rail housing part, and the width of the slit is 10 mm to 30 mm.

6. The cargo ship according to claim 5, wherein a prevention sheet is provided on a wall part forming the guide rail housing part, which is in slidable contact with the upper surface of the hold curtain relatively, to prevent foreign matter from entering the slit.

7. a partition wall is provided below an opening of the storage part, a loading and unloading port through which a loading and unloading vehicle can pass is provided in the partition wall, and the loading and unloading port is openable and closable by an opening and closing door.

8. The cargo ship according to claim 7, wherein the opening and closing door opens and closes the loading and unloading port by rotating up and down about the lower end of the opening and closing door by an opening and closing door drive mechanism.

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