Container unloading method

Abstract

A container unloading method according to an embodiment of the present invention is a method for unloading a plurality of containers from a container carrier, and may comprise the steps of: loading some of a plurality of containers into any one from among a plurality of cargo holds; inserting any one from among a plurality of container loading auxiliary devices into a guide path and holding same in any one cargo hold; and stacking the rest of the plurality of containers on any one container loading auxiliary device.

Description

Container unloading method

[0001] Embodiments of the present invention relate to a method for unloading a container.

[0002] Container carriers are increasingly increasing their container loading capacity, and along with this increase in loading capacity, ensuring the stability of loaded containers during operation is becoming an important factor.

[0003] These container carriers load containers into cargo holds arranged forward and backward inside the hull using structures called cell guides. They then install hatch covers on hatch coamings installed at the entrances to the cargo holds on the upper deck of the hull, and then stack containers in multiple tiers on the hatch covers. To prevent containers from tipping over, they are secured to lashing bridges located above the spaces between the cargo holds using various fittings.

[0004] Hatch covers not only support the load of containers loaded on the upper deck and block foreign substances (seawater, rain, etc.) from entering the cargo hold, but also contribute to reinforcing the longitudinal strength of container carriers.

[0005] However, hatch covers are not only inconvenient in that they are difficult to produce / transport / load due to their heavy weight, but also require additional structures to be installed at the entrance of the cargo hold, which means they take up a lot of space between adjacent cargo holds, making it impossible to load containers in that space.

[0006] Recently, research has been conducted on small container carriers with an open-top concept without hatch covers to solve the problems of producing / transporting / loading hatch covers while loading more containers.

[0007] When applying the open-top concept to small container carriers, there is a problem of damage to the lower containers due to the load of the loaded containers, and the number of containers (tiers) continuously loaded from the bottom of the cargo hold to the upper deck must be limited to a certain number (e.g. 12 tiers) due to issues with the trim and stability of the ship. In addition, there is a problem of having to excessively raise the side plate and reinforce the hull strength compared to container carriers with the same loading capacity to prevent green water, which is a large amount of seawater flowing into the deck of the ship in rough seas when the ship is operating.

[0008] In order to prevent containers loaded on top of the hatch cover from tipping over on large container carriers, various fittings must be used to secure / unfasten the containers on top of the hatch cover to the lashing bridge during container unloading. This is mostly done manually by workers, requiring excessive work time and safety management, which incurs operating costs for container carriers. In addition, when a container carrier is operating, if excessive hull motion occurs due to bad weather, the hatch cover may move due to the load, the fastening devices of the deck or hatch cover may be damaged, the fittings of the lashing bridge may break, or the hatch cover and the hull may be relatively displaced. This can lead to the lashing system continuously collapsing due to imperfect elements of the hatch cover and lashing system, ultimately resulting in the damage or loss of loaded containers into the sea.

[0009] The problem to be solved by the embodiments of the present invention is to maximize the loading capacity by increasing the number (stages) of containers continuously loaded from the bottom of the cargo hold to the upper part of the upper deck on a large container carrier without a hatch cover, simplify the unloading procedure by omitting the fitting work between the container and the lashing bridge to prevent the loaded containers from overturning, and provide a container unloading method that can solve the problem of the loaded containers being damaged or lost.

[0010] However, the tasks of the present invention are not necessarily limited to the tasks mentioned above, and other technical tasks not mentioned can be clearly understood by those skilled in the art from the description below.

[0011] A container unloading method according to an embodiment for solving a problem is a method for unloading a plurality of containers from a container carrier, wherein the container carrier comprises a hull including a side plate, a bottom plate, and an upper deck, a plurality of cargo holds divided in the longitudinal direction of the hull by a plurality of transverse bulkheads inside the hull, a plurality of lower cell guides installed in front and behind each of the plurality of transverse bulkheads in the longitudinal direction and arranged in parallel along the width direction of the hull intersecting the longitudinal direction, a plurality of top bridges extending upward from the plurality of transverse bulkheads and installed so as to extend to the left and right edges of the upper deck in the width direction and arranged in a plurality of rows in the longitudinal direction, a plurality of upper cell guides installed in front and behind each of the plurality of top bridges in the longitudinal direction and connected to the plurality of lower cell guides to provide a continuous guide path for containers, and a plurality of container loading auxiliary devices that are guided by the plurality of upper cell guides and introduced into the guide path and applied to at least one of the plurality of cargo holds so that at least one of the plurality of containers is loaded upward, and a portion of the plurality of containers is loaded into one of the plurality of cargo holds. It may include a step of loading one of the containers inside, a step of introducing one of the plurality of container loading auxiliary devices into a guide path and placing it on one of the cargo holds, and a step of loading another part of the plurality of containers on top of one of the container loading auxiliary devices.

[0012] In one embodiment, the container carrier may further include a twistlock zone visually marked on at least one of the plurality of upper cell guides and the plurality of top bridges, and may further include a step of twistlocking other containers overlapping the twistlock zone with respect to the horizontal direction.

[0013] In one embodiment, the step of fastening the twist lock includes the step of fastening some containers arranged relatively high among other containers to each other with a twist lock, wherein the twist lock zone can overlap some containers arranged relatively high in the horizontal direction.

[0014] In one embodiment, the step of fastening the twistlock comprises fastening all of the other containers to each other with a twistlock, wherein the twistlock zone can overlap the other containers in the horizontal direction.

[0015] In one embodiment, the method may further include the steps of releasing the twist locks from some of the other containers on board, and unloading some of the other containers.

[0016] In one embodiment, the step of releasing the twistlock from some of the other containers on board may include the step of releasing the twistlock secured to the upper surface of a lower container among the upper and lower containers secured with the twistlock among the other containers, and the step of unloading the other containers may include the step of transporting the upper container to land with the twistlock secured to the lower surface, and the step of releasing the twistlock secured to the lower surface of the upper container on land.

[0017] In one embodiment, the method may further include the step of fastening one container loaded on one container loading auxiliary device and one container loaded on another container loading auxiliary device among some other containers on board with a twist lock, and the step of unloading one container loading auxiliary device and one container together while being fastened to one another.

[0018] In one embodiment, the container carrier further includes a fastening member comprising at least one of a lashing eye, a lashing ring, a lashing plate, a plug, and a cone arranged at the uppermost portions of the plurality of tower bridges, and may further include a step of connecting the uppermost portions of the plurality of tower bridges to each other with the fastening member after the step of loading other portions of containers on top of one of the container loading auxiliary devices.

[0019] A container unloading method according to an embodiment for solving a problem is a method for unloading a plurality of containers from a container carrier, wherein the container carrier comprises a hull including a side plate, a bottom plate, and an upper deck, a plurality of cargo holds divided in the longitudinal direction of the hull by a plurality of transverse bulkheads inside the hull, a plurality of lower cell guides installed in front and behind each of the plurality of transverse bulkheads in the longitudinal direction and arranged in parallel along the width direction of the hull intersecting the longitudinal direction, a plurality of top bridges extending upward from the plurality of transverse bulkheads and installed so as to extend to the left and right edges of the upper deck in the width direction and arranged in a plurality of rows along the longitudinal direction, a plurality of upper cell guides installed in front and behind each of the plurality of top bridges in the longitudinal direction and connected to the plurality of lower cell guides to provide a continuous guide path for containers, and a plurality of container loading auxiliary devices that are guided by the plurality of upper cell guides and are introduced into the guide path and applied to at least one of the plurality of cargo holds so that at least one of the plurality of containers is loaded upward, and a portion of the plurality of containers is loaded into one of the plurality of cargo holds. It may include a step of loading inside one of the plurality of containers, a step of loading one of the plurality of containers on top of one of the plurality of container loading auxiliary devices arranged on land, a step of fastening one of the container loading auxiliary devices and one of the containers to each other with a twist lock on the land, a step of introducing one of the container loading auxiliary devices and one of the containers into a guide path in a state of being fastened to each other and placing them on one of the cargo holds, and a step of loading another part of the plurality of containers on top of one of the containers.

[0020] In one embodiment, the container carrier may further include a twistlock zone visually marked on at least one of the plurality of upper cell guides and the plurality of top bridges, and may further include a step of twistlocking other containers overlapping the twistlock zone with respect to the horizontal direction.

[0021] In one embodiment, the method may further include a step of twist-locking one container and another container positioned above one of the other containers when one of the containers overlaps a twist-lock zone in the horizontal direction.

[0022] In one embodiment, the step of engaging the twistlock comprises engaging all of the other containers with twistlocks, wherein the twistlock zones can overlap the other containers in a horizontal direction.

[0023] In one embodiment, the method may further include the steps of releasing the twist locks from some of the other containers on board, and unloading some of the other containers.

[0024] In one embodiment, the method may further include the step of unloading one container loading assistance device and one container together while being connected to each other.

[0025] In one embodiment, the method may further include the steps of releasing the twist lock from one of the container loading aids and one of the containers on board, and sequentially unloading one of the containers and the container loading aid.

[0026] According to the container unloading method according to embodiments of the present invention, the number (stages) of containers continuously loaded from the bottom of the cargo hold to the upper part of the upper deck in a large container carrier without a hatch cover can be increased, thereby increasing the loading capacity, the fitting work between the loaded containers and the lashing bridge can be omitted, thereby reducing the time and cost due to excessive fitting work, and damage and / or loss of the loaded containers can be prevented.

[0027] Figure 1 is a side cross-sectional view showing one embodiment of a container carrier.

[0028] Figure 2 is a front cross-sectional view showing one embodiment of a container carrier.

[0029] Figures 3 to 7 are perspective views and plan views showing one embodiment of a container carrier and an open-type container loading assistance device equipped thereon.

[0030] Figures 8 to 12 are perspective views and plan views showing one embodiment of a container carrier and a closed-type container loading assistance device equipped thereon.

[0031] Figure 13 is a three-dimensional front perspective view illustrating one embodiment of a container carrier.

[0032] Fig. 14 is a perspective view showing one embodiment of an open-type container loading assistance device.

[0033] Fig. 15 is a perspective view showing one embodiment of a closed-type container loading assistance device.

[0034] Fig. 16 is a side view showing the container loading assistance device illustrated in Fig. 14 or 15 loaded onto a transport vehicle.

[0035] Fig. 17 is a perspective view showing the container loading assistance device illustrated in Fig. 14 or 15 loaded onto a container carrier.

[0036] Figures 18 to 22 are conceptual diagrams showing various position adjusting members for adjusting the installation position of the container loading assistance device illustrated in Figure 14 or Figure 15.

[0037] FIGS. 23 and 24 are drawings for comparing and explaining the loading stability of a container in a cell guide system according to one embodiment and a conventional lashing system.

[0038] Figures 25 to 27 are tables for comparing and explaining the loading stability of containers in a cell guide system according to one embodiment and a conventional lashing system.

[0039] Fig. 28 is a perspective view showing a container unloading method using a container loading assistance device on a container carrier according to one embodiment.

[0040] Fig. 29 is a flowchart showing a method of unloading a container using a container loading assistance device on a container carrier according to one embodiment.

[0041] Fig. 30 is another flowchart showing a method of unloading a container using a container loading assistance device on a container carrier according to one embodiment.

[0042] Figure 31 is a perspective view showing one embodiment of a container carrier and the support members, entry guides, and reinforcing members provided thereon.

[0043] Fig. 32 is a perspective view showing the support member of Fig. 31.

[0044] Figures 33 to 35 are perspective and side views showing the entry guide and reinforcing member of Figure 31.

[0045] Figure 36 is a cross-sectional view and a side view showing one embodiment of a protection bar installed on a container carrier.

[0046] FIG. 37 is a cross-sectional view and a side view showing another embodiment of the protection bar illustrated in FIG. 36.

[0047] FIG. 38 is a cross-sectional view and a side view showing another embodiment of the protection bar illustrated in FIG. 36.

[0048] Figure 39 is a side view showing one embodiment of an upper cell guide.

[0049] Figure 40 is a flowchart for explaining a container unloading method using the upper cell guide shown in Figure 39.

[0050] Figure 41 is a first partial flowchart for explaining a container unloading method in the container unloading method of Figure 40.

[0051] Figure 42 is a second partial flowchart for explaining a container loading method in the container unloading method of Figure 40.

[0052] Figure 43 is a drawing for explaining the second partial flowchart of Figure 42.

[0053] Figure 44 is a third partial flowchart for explaining a container unloading method in the container unloading method of Figure 40.

[0054] Figure 45 is a drawing for explaining the third partial flowchart of Figure 44.

[0055] Figure 46 is a drawing showing a state in which container loading assistance devices are stacked in multiple layers and fastened with twist locks.

[0056] Figure 47 is a perspective view showing one embodiment of a top bridge and upper cell guide.

[0057] Fig. 48 is a side view showing one embodiment of a cell guide device.

[0058] FIG. 49 is a side view showing another embodiment of the cell guide device illustrated in FIG. 48.

[0059] Fig. 50 is a perspective view showing one embodiment of a gap cover.

[0060] Figure 51 is a perspective view showing the upper part of the gap cover by enlarging a part of Figure 50.

[0061] Figure 52 is a perspective view showing the lower part of the gap cover by enlarging a part of Figure 50.

[0062] Figure 53 is a side view showing the gap cover illustrated in Figure 50 as viewed from the front.

[0063] Figure 54 is a front cross-sectional view showing the gap cover illustrated in Figure 50 as viewed from the side.

[0064] Figure 55 is a plan view showing the gap cover illustrated in Figure 50 as viewed from above.

[0065] Fig. 56 is a perspective view showing embodiments of the gap cover illustrated in Fig. 50.

[0066] Figure 57 is a graph showing the relationship between the wind load coefficient (Cx) and wind direction angle according to computational fluid dynamics (CFD).

[0067] The objects, specific advantages, and novel features of the present invention will become more apparent from the following detailed description and preferred embodiments thereof, taken in conjunction with the accompanying drawings. It should be noted that, in this specification, reference numerals are assigned to components in each drawing, and that, as far as possible, identical components are given the same reference numerals even if they are shown in different drawings. Furthermore, the present invention is not necessarily limited to the embodiments described herein and may be embodied in other forms. However, the embodiments described herein are provided to explain the technical idea of ​​the present invention in sufficient detail to enable those skilled in the art to easily practice it.

[0068] Throughout the specification, when a part is said to be “connected” to another part, this includes not only the case where it is “directly connected” but also the case where it is “indirectly connected” with another component in between. The terminology used herein is for the purpose of describing particular embodiments and is not intended to limit the present invention. For example, the singular form includes the plural form unless the context clearly indicates otherwise. Also, when a part is said to “comprise” a component, this does not exclude other components, but rather means that the other components can be included, unless specifically stated to the contrary. “At least one of X, Y, and Z,” and “at least one selected from the group consisting of X, Y, and Z” can be interpreted as one X, one Y, one Z, or any combination of two or more of X, Y, and Z (e.g., XYZ, XYY, YZ, ZZ). Here, “and / or” includes any combination of one or more of the components.

[0069] Here, terms such as first, second, etc. may be used to describe various components, but are used to distinguish these components from other components. Accordingly, a first component may also refer to a second component within the scope disclosed herein.

[0070] Various embodiments are described with reference to drawings schematically illustrating ideal embodiments. Accordingly, it is to be understood that the shapes may vary, for example, depending on tolerances and / or manufacturing techniques. Therefore, the embodiments disclosed herein should not be construed as necessarily limited to the specific shapes depicted, but rather to encompass, for example, variations in shapes resulting from manufacturing processes. Likewise, the shapes depicted in the drawings may not necessarily represent the actual shapes of individual components of the vessel, and the embodiments herein are not necessarily limited thereto.

[0071] Fig. 1 is a side cross-sectional view showing an embodiment of a container carrier. Fig. 2 is a front cross-sectional view showing an embodiment of a container carrier. Figs. 3 to 7 are perspective views and plan views showing an embodiment of a container carrier and an open-type container loading assistance device equipped thereon. Figs. 8 to 12 are perspective views and plan views showing an embodiment of a container carrier and a closed-type container loading assistance device equipped thereon. Fig. 13 is a three-dimensional front perspective view for explaining an embodiment of a container carrier. Fig. 14 is a perspective view showing an embodiment of an open-type container loading assistance device. Fig. 15 is a perspective view showing an embodiment of a closed-type container loading assistance device.

[0072] As illustrated in FIGS. 1 to 15, a container carrier (1) can transport containers (C) from a departure point to a destination by loading them in multiple stages inside and outside the hull (10), and as a new concept container carrier without a hatch cover, can include a container loading auxiliary device (100, 100a) for loading and supporting containers (C).

[0073] In the embodiments, the container carrier (1) may be a large container ship that loads a large quantity of containers (C) in 13 or more tiers, including the amount loaded from the bottom of the cargo hold (17) to the upper part of the upper deck (11), but is not necessarily limited thereto. For example, the containers (C) may include at least one of a 20-foot container (hereinafter referred to as a “small container”) and a 40-foot container (hereinafter referred to as a “large container”), which are mainly loaded on the container carrier (1). However, since, in accordance with the ISO standard, containers (C) having various specifications and dimensions other than the 20-foot or 40-foot containers mentioned above may be used as marine containers (C), it should be noted that the small container (C) or large container (C) mentioned below are not used in a meaning limited to 20-foot or 40-foot.

[0074] The container loading assistance device (100, 100a) may be an open-type container loading assistance device (100) as shown in FIGS. 3 to 7 and 14, and may be a closed-type container loading assistance device (100a) as shown in FIGS. 8 to 12 and 15. Since the open-type container loading assistance device (100) and the closed-type container loading assistance device (100a) are somewhat similar in terms of configuration and function, the following description will focus on the open-type container loading assistance device (100), and the different configuration and function of the closed-type container loading assistance device (100a) will be described with reference to FIGS. 8 to 12 and 15.

[0075] The hull (10) may form the exterior of a container carrier (1). The hull (10) may be surrounded by a top deck (11), a side plate (12), and a bottom plate (13).

[0076] The hull (10) can be formed as a double-hull structure in which the side plate (12) is composed of a side outer plate (12a) and a side inner plate (12b), and a double-bottom structure in which the bottom plate (13) is composed of a bottom outer plate (13a) and a bottom inner plate (13b).

[0077] A plurality of containers (C) can be loaded inside the hull (10). To this end, a plurality of cargo holds (17) partitioned in the front-rear direction by a transverse bulkhead (16) can be arranged inside the hull (10). A plurality of lower cell guides (31) are installed at regular intervals on the side of the transverse bulkhead (16) inside the cargo hold (17) to guide the loading of containers (C) introduced into the cargo hold (17).

[0078] In the embodiments, the cargo hold (17) may be configured to have an open entrance, and instead of a conventional hatch cover being installed at the entrance, a container loading assistance device (100) to be described later may be installed at the entrance of the cargo hold (17) or at an arbitrary location inside the cargo hold (17). For example, the entrance of the cargo hold (17) may have a simple structure so that the container loading assistance device (100) can be installed. When the container loading assistance device (100) is installed inside the cargo hold (17), a groove (not shown) may be formed on the upper deck forming the entrance of the cargo hold (17) so that the container loading assistance device (100) can pass through the entrance of the cargo hold (17).

[0079] In addition, when the container loading assistance device (100) is applied to a container carrier with an existing lashing bridge or a container carrier with a hatch coaming at the entrance of a cargo hold (17), it can be installed on the hatch coaming placed on the upper part of the upper deck (11).

[0080] An engine room (R) may be arranged at a location adjacent to the stern (15) inside the hull (10). A propulsion engine (not shown) may be accommodated inside the engine room (R), and the propulsion engine may be mechanically or electrically connected to a propeller to consume liquefied gas as fuel and provide driving force to rotate the propeller.

[0081] A cabin (A) may be arranged on the upper deck (11) of the hull (10). The cabin (A) is a living space for the crew and may be composed of multiple floors in the height direction of the hull (10), and a cockpit for controlling navigation may be arranged on the top floor.

[0082] An engine casing (I) may be placed at the rear of the cabin (A). The engine casing (I) may include a chimney for discharging exhaust generated from the propulsion engine to the outside, and may also be equipped with an emergency generator or fire extinguishing equipment.

[0083] On the upper deck (11) of the hull (10), containers (C) can be loaded in the area excluding the cabin (A) and the engine casing (I). To load the containers (C), a plurality of tower bridges (20) arranged in a plurality of rows in the longitudinal direction of the hull (10) are provided on the upper deck (11).

[0084] The top bridge (20) may be installed so as to extend upward from a plurality of transverse bulkheads (16) to the left and right edges of the upper deck (11) in the width direction of the hull (10), and may be arranged at a certain interval from the bow (14) to the stern (15).

[0085] A plurality of upper cell guides (32) are installed in front and behind each of the plurality of top bridges (20) based on the longitudinal direction of the hull (10), but may be arranged side by side along the width direction of the hull (10). In other words, the top bridge (20) may not be a lashing bridge to which an existing lashing system is applied, but may be a cell guide system to which a plurality of upper cell guides (32) are applied.

[0086] A plurality of upper cell guides (32) extend from the top of the top bridge (20) to the upper deck (11) and are connected to a plurality of lower cell guides (31) installed inside the cargo hold (17) to form a continuous guide path for containers (C). When a container loading auxiliary device (100, 100a) is introduced into the interior of the upper cell guide (32) using a crane (CR) and lowered, the container loading auxiliary device (100, 100a) can be introduced into the guide path and lowered while being guided by the upper cell guide (32).

[0087] The upper cell guide (32) can guide the lifting and lowering of containers (C) transported by the crane (CR), and the upper cell guide (32) installed on the top bridge (20) and the lower cell guide (31) installed on the transverse bulkhead (16) are respectively connected so that the unloading of containers (C) can be performed continuously without additional work such as hatch cover mounting or lashing work. In addition, the upper cell guide (32) can support the lateral load of the containers (C) generated by the movement of the hull (10).

[0088] The top bridge (20) can support and fix containers (C) by installing upper cell guides (32) in the front-back direction based on the longitudinal direction of the hull (10), so that the existing lashing system (fastening devices such as lashing rods and lashing bars) can be omitted. In addition, the top bridge (20) can prevent containers (C) loaded in tiers 1 to 4 from overturning, and can also secure access and working space for maintenance and monitoring of control units, etc. provided in reefer containers (C). In this way, the top bridge (20) can directly support containers (C) on the upper deck (11) when the container carrier (1) is in operation, so that the problem of loaded containers (C) being damaged or lost can be solved.

[0089] In particular, the problem of the hatch cover moving due to the load, the fastening device of the deck or hatch cover being damaged, the fittings of the lashing bridge being broken, or the relative displacement of the hatch cover and the hull occurring when excessive hull movement occurs due to bad weather during operation, which is a problem of the existing large container carriers, can be solved by removing the imperfect elements of the hatch cover and lashing system, such as the lashing system continuously collapsing and the loaded containers (C) being damaged or lost to the sea.

[0090] In the case of the existing lashing bridge, since the lashing system is applied, sufficient width is required for the lashing work according to the worker environment regulations, whereas the top bridge (20) according to the embodiments omits the lashing system and applies a cell guide system, thereby minimizing the width and simplifying the complex structure in which the existing lashing bridge is installed. In addition, since the width of the top bridge (20) can be minimized, the width of the upper deck (11) between the cargo holds (17) can be minimized compared to the existing container carrier in which the existing lashing bridge is installed, thereby securing design flexibility (optimization possible due to the elimination of the hull length and other lashing systems) compared to the same specifications of the container carrier (1), and increasing the loading capacity of the containers (C).

[0091] In embodiments, the top bridge (20) may include a plurality of vertical members (21) and a plurality of horizontal members (22).

[0092] Among the vertical members (21), the outer vertical members (21a) arranged in two on each side of the upper deck (11) based on the width direction of the hull (10) can be arranged at intervals corresponding to the width of the containers (C).

[0093] Among the vertical members (21), a plurality of intermediate vertical members (21b) arranged between the outer vertical members (21a) can be arranged at intervals corresponding to twice the width of the container (C).

[0094] The upper cell guide (32) can be placed between each of the outer vertical members (21a), the middle vertical members (21b) and the middle vertical members (21b).

[0095] Since the top bridge (20) is connected to the upper cell guide (32) that supports the lateral load of the container (C) generated by the movement of the hull (10), it is desirable to form it so as to withstand the lateral load.

[0096] The plurality of upper cell guides (32) may be formed to have the same height as the top bridge (20), but are not necessarily limited thereto. For example, the upper cell guides (32) may be formed to have various heights according to the ship owner's request. In other words, the upper cell guides (32) may have a height higher or lower than the top bridge (20). In this way, since the upper cell guides (32) are installed in the top bridge (20), loss of the container (C) due to overturning can be fundamentally prevented, and the number of tiers above the upper deck (11) can be designed to be customized according to the ship owner's request, and the upper structure and lower structure of the hull (10) can be manufactured as a unit block that integrates them, thereby maximizing weight reduction and productivity.

[0097] In addition, the top bridge (20) may additionally apply an existing lashing system to the top in addition to the aforementioned cell guide system. For example, at least one of a lashing eye, a lashing ring, a lashing plate, a plug, and a cone, which are fixing devices of the lashing system, may be arranged at the top of the top bridge (20), thereby further enhancing the safety of the loading container (C).

[0098] Although the container carrier (1) is described as having a top bridge (20) with a cell guide system applied thereto, it is not limited thereto, and it is obvious that a lashing bridge with a lashing system applied similar or identical to the existing one may be installed in some rows or some sections on the left and right sides of one row. For example, the container carrier (1) may be configured as a hybrid bridge in which a top bridge (20) with a cell guide system applied thereto and a lashing bridge with a conventional lashing system applied thereto are mixed.

[0099] Referring to FIG. 14, the container carrier (1) may include a container loading assistance device (100).

[0100] The container loading assistance device (100) is applicable to a container carrier (1) without a hatch cover, and can be mounted on at least one cargo hold (17) to load and support multiple containers (C) on the upper side.

[0101] The container loading assistance device (100) may include an upper frame (111), a lower frame (112), a support (113), a protruding member (120), a reinforcing frame (130), a first fitting member (141), and a second fitting member (142). The container loading assistance device (100) may be configured such that the upper frame (111), the lower frame (112), and the support (113) are mutually connected to form a main body (110) having an overall rectangular box shape.

[0102] The upper frame (111) may be configured in a square shape having a width corresponding to the width of a small container (C) or a large container (C) and a length corresponding to the length of the large container (C).

[0103] The upper frame (111) may be configured with a pair of first long-axis frames (111a) arranged with a width corresponding to the width of a small container (C) or a large container (C) and having a length corresponding to the length of the large container (C), and a pair of first short-axis frames (111b) connecting the ends of each of the pair of first long-axis frames (111a) and having a width corresponding to the width of the small container (C) or the large container (C).

[0104] The lower frame (112) may be configured in a square shape having a width corresponding to the width of a small container (C) or a large container (C) and a length corresponding to the length of the large container (C).

[0105] The lower frame (112) may be configured with a pair of second long-axis frames (112a) arranged with a width corresponding to the width of the small container (C) or the large container (C) and having a length corresponding to the length of the large container (C), and a pair of second short-axis frames (112b) connecting the ends of each of the pair of second long-axis frames (112a) and having a width corresponding to the width of the small container (C) or the large container (C).

[0106] Each of the pair of second long axis frames (112a) may be configured such that both ends are connected to the lower end of a support (113) to be described later, have a downward slope as they go inward, and are bent so as to be level with each of the pair of first long axis frames (111a) at the middle portion.

[0107] The support (113) can be provided in the height direction on the upper frame (111) and the lower frame (112), and can connect each of the square corners of the upper frame (111) and each of the square corners of the lower frame (112).

[0108] The protruding member (120) may be configured to protrude outwardly from the upper frame (111) and the lower frame (112), or the support member (113), so as to be mounted at any position of the cargo hold (17). The protruding member (120) may protrude outwardly in the longitudinal direction from the lower end of each of the support members (113) so as to be mounted at the entrance of the cargo hold (17) or at any position inside the cargo hold (17).

[0109] When the protruding member (120) is installed on the upper deck (11) at the entrance of the cargo hold (17), the load of a small container (C) or a large container (C) transmitted through the support (113) can be transmitted to the upper deck (11).

[0110] When the protruding member (120) is installed at an arbitrary position inside the cargo hold (17) using the position adjusting member (40) to be described later, a groove through which the protruding member (120) passes can be formed in the upper deck (11) of the entrance to the cargo hold (17) at the portion where the protruding member (120) is installed. Accordingly, the protruding member (120), after passing through the groove formed in the upper deck (11), is installed on the position adjusting member (40) to be described later, which is installed at an arbitrary position of the transverse bulkhead (16) inside the cargo hold (17), and the load of the small container (C) or the large container (C) transmitted through the support (113) can be transmitted to the transverse bulkhead (16).

[0111] In embodiments, when the container loading assistance device (100) is applied to an existing container carrier having a lashing bridge installed or an existing container carrier having a hatch coaming at the entrance to the cargo hold (17), the protruding member (120) may be installed on the upper hatch coaming of the upper deck (11) at the entrance to the cargo hold (17).

[0112] The reinforcing frame (130) connects the middle part in the longitudinal direction of the upper frame (111) and the middle part in the longitudinal direction of the lower frame (112), and can support the load of containers (C) loaded on the upper surface of the container loading auxiliary device (100).

[0113] The reinforcing frame (130) may be composed of a first horizontal reinforcing member (131) connecting the middle portions of each of a pair of first long-axis frames (111a), a second horizontal reinforcing member (132) connecting the middle portions of each of a pair of second long-axis frames (112a), a first vertical reinforcing member (133) connecting one end of the first horizontal reinforcing member (131) and one end of the second horizontal reinforcing member (132), and a second vertical reinforcing member (not shown) connecting the other end of the first horizontal reinforcing member (131) and the other end of the second horizontal reinforcing member (132).

[0114] The container loading assistance device (100) may further include a first plate (151), a second plate (152), and a reinforcing frame (160).

[0115] The first plate (151) can be installed on a one-sided frame formed by one of a pair of first long axis frames (111a), one of a pair of second long axis frames (112a), and a support (113) connecting both ends thereof.

[0116] The second plate (152) can be installed on the other side frame formed by the other one of the pair of first long axis frames (111a), the other one of the pair of second long axis frames (112a), and a support (113) connecting both ends thereof.

[0117] The reinforcing frame (160) can be installed on at least one side of the outer side and inner side of each of the first plate (151) and the second plate (152).

[0118] When the reinforcing frame (160) is installed on the outer surface of each of the first plate (151) and the second plate (152), the reinforcing frame (160) may include an intermediate reinforcing frame (161) connected to each of the first long axis frames (111a) and the second long axis frames (112a) so as to face each of the first vertical reinforcing member (133) and the second vertical reinforcing member, with each of the first plate (151) and the second plate (152) interposed therebetween, and a first reinforcing frame (162) and a second reinforcing frame (163) arranged between the supports (113) on both sides based on the intermediate reinforcing frame (161), and connected to each of the first long axis frames (111a) at the bent portion of each of the second long axis frames (112a).

[0119] The pair of second longitudinal frames (112a) are illustrated as having a folded shape, but are not necessarily limited thereto, and may, for example, be formed in a flat shape. In other words, the container loading assistance device (100) may be manufactured in the overall shape of a rectangular box.

[0120] In the embodiments, the container loading assistance device (100) may secure rigidity capable of supporting the load of a container (C) loaded on top by including all or part of the reinforcing frame (130), the first plate (151) and the second plate (152), and the reinforcing frame (160), unlike similar technologies of the related art.

[0121] The first fitting member (141) is positioned at the top of each of the square corners of the upper frame (111) and can be used for fixing when loading a container (C) or for lifting when transporting it with a crane (CR). The first fitting member (141) can be formed at the same height at each of the square corners of the upper frame (111).

[0122] The second fitting member (142) is provided as a pair at the upper part of the middle part of the upper frame (111), and can be used for fixing when loading a container (C), or can be used for lifting together with the first fitting member (141) when transporting with a crane (CR).

[0123] The second fitting member (142) is provided at the upper end of the middle portion of each of a pair of first longitudinal frames (111a), and may be formed 5 mm to 15 mm higher than the height of the first fitting member (141) so that the two facing containers (C) do not come into contact with each other even if they tilt inward due to buckling caused by the load when two containers (C) are placed longitudinally.

[0124] In the embodiments, the container loading assistance device (100) is provided with a first fitting member (141) and a second fitting member (142), so that, unlike similar technologies in the related art, small containers (C) and large containers (C) can be safely fixed together on the upper surface.

[0125] Fig. 16 is a side view showing the container loading assistance device shown in Fig. 14 or 15 loaded onto a transport vehicle. Fig. 17 is a perspective view showing the container loading assistance device shown in Fig. 14 or 15 loaded onto a container carrier.

[0126] Referring to FIGS. 16 and 17, the stacking member (180) may have a structure that can be switched from a first state in which it is stacked on a transport vehicle (TR) or land (corresponding to reference numeral 2 in FIG. 13) to a second state in which it is stacked on a container carrier (1).

[0127] The stacking member (180) may include a stacking leg (181) installed on the outer side in the width direction on each side of the support (113), and a third fitting member (182) provided at the lower end of each stacking leg (181) and connected to a first fitting member (141) provided on the main body (110) to be stacked at the top when stacking the main body (110) in multiple stages.

[0128] The stacking legs (181) can be configured so that when the main body (110) is stacked in multiple stages using the first fitting member (141) and the third fitting member (182), a pair of second fitting members (142) provided on the main body (110) stacked at the bottom do not come into contact with the lower frame (112) of the main body (110) stacked at the top.

[0129] In the embodiments, the stacking legs (181) may be formed to a length such that, when the container loading auxiliary devices (100) are stacked vertically, the lower part of the container loading auxiliary device (100) stacked above and the upper part of the container loading auxiliary device (100) stacked below do not touch each other. This is because there is a possibility that the container loading auxiliary devices (100) arranged above and below may be damaged due to contact friction when shaking occurs due to external environmental factors while in contact with each other.

[0130] The stacking member (180) is a component that connects and / or supports the container loading auxiliary device (100), and can have the function of safely storing the container loading auxiliary device (100) when manufactured or stacked on land (2), the function of supporting and connecting each of the container loading auxiliary devices (100) stacked vertically when transporting a plurality of container loading auxiliary devices (100) from land (2) to a transport vehicle (TR), and the function of supporting and connecting each of the container loading auxiliary devices (100) when storing multiple container loading auxiliary devices (100) by stacking them in some cells (18) of a container carrier (1).

[0131] The container loading assistance device (100) can be guided by the upper cell guide (32) when being raised and lowered between neighboring tower bridges (20) by a crane (CR).

[0132] In addition, the container loading assistance device (100) can be stored by being placed between outer vertical members (21a) facing each other in the longitudinal direction of the hull (10) on the upper deck (11) on the left or right side of the hull (10) as shown in FIG. 17 during or before the container unloading operation, but is not necessarily limited thereto. For example, the container loading assistance device (100) can be placed not only between middle vertical members (21b) facing each other in the longitudinal direction, but can also be placed between two or more vertical members (21) when two or more container loading assistance devices (100) are connected in parallel. In this way, by placing and storing the container loading assistance device (100) on the container carrier (1), a separate storage area on land is not required, and the unloading efficiency of the containers (C) can be improved.

[0133] In the above, an open-type container loading assistance device (100) in which the left and right sides of the main body (110) are sealed with first and second plates (151, 152) and the upper, lower, front, and rear sides of the main body (110) are open has been described. Below, a closed-type container loading assistance device (100a) will be described.

[0134] As shown in FIGS. 8 to 13 and 15, the closed-type container loading assistance device (100a) may be similar to the open-type container loading assistance device (100) in overall shape, function and configuration, but may further include a watertight member (153).

[0135] Hereinafter, in describing the closed-type container loading assistance device (100a), components other than the watertight member (153) are identical or similar to those of the open-type container loading assistance device (100) and are given the same drawing reference numerals (parts not shown in FIGS. 8 to 13 and FIG. 15 are cited from those shown in FIGS. 3 to 7 and FIG. 14). Accordingly, in order to avoid duplication of explanation, detailed descriptions of each identical component will be omitted, and only the watertight member (153), which is a component different from the open-type container loading assistance device (100), and the parts that are different due to this will be described.

[0136] The watertight member (153) can block water (seawater or rain) from flowing into the cargo hold (17) when a closed-type container loading auxiliary device (100a) is installed on the upper deck (11) of the cargo hold (17) entrance and a container (C) is loaded thereon. In embodiments, the watertight member (153) can include a first watertight plate (153a), a second watertight plate (153b), and a third watertight plate (153c).

[0137] The first watertight plate (153a) can be installed on the upper frame formed by a pair of first long-axis frames (111a) and a pair of first short-axis frames (111b) forming the upper frame (111), and can block water from flowing into the cargo hold (17) through the upper portion of the closed-type container loading auxiliary device (100a).

[0138] The second watertight plate (153b) can be installed on the front and rear frames formed by the first short frame (111b), the support (113), and the protruding member (120) of the upper frame (111), and can block water from flowing into the cargo hold (17) through the front and rear portions of the closed-type container loading auxiliary device (100a). The lower portion of the second watertight plate (153b) protrudes outward in correspondence with the shape of the protruding member (120), and is thus placed on the upper deck (11) at the entrance of the cargo hold (17).

[0139] The third watertight plate (153c) can be installed at a certain height along the edge of each of the pair of first long-axis frames (111a) forming the upper frame (111), and can guide water accumulated on the first watertight plate (153a) to the second watertight plate (153b) forming the side of the closed-type container loading auxiliary device (100a), thereby preventing water from flowing into the cargo hold (17).

[0140] In embodiments, the closed-type container loading assistance device (100a) may be formed so that the width of the upper portion is larger than the width of the small container (C) or the large container (C), unlike the open-type container loading assistance device (100). For example, the third watertight plate (153c) may have a gap width larger than the width of the small container (C) or the large container (C), or may be formed at a lower height than the first fitting member (141) and the second fitting member (142) so as not to be damaged when the small container (C) or the large container (C) is fixed to the first and second fitting members (141, 142).

[0141] When a closed-type container loading auxiliary device (100a) including a watertight member (153) is installed on the upper deck (11) around the entrance of a cargo hold (17) and a container (C) is loaded on top thereof and water flows down the side wall of the container (C), the water accumulates on the first watertight plate (153a), and the accumulated water overflows to the side of the closed-type container loading auxiliary device (100a) by the third watertight plate (153c) and does not flow into the interior of the cargo hold (17), but can be drained to the upper deck (11) through the second watertight plate (153b).

[0142] The container loading auxiliary device (100, 100a) can be operated in the same manner as an ISO container (C), and can maximize loading convenience by operating it with a crane (CR), and can promote production and logistics convenience by loading and transporting it on land with a transport vehicle (TR), and can reduce the weight by about 25% (for example, about 600 tons lighter for 15K) compared to the existing 6-row hatch cover.

[0143] Figures 18 to 22 are conceptual diagrams showing various position adjusting members for adjusting the installation position of the container loading assistance device illustrated in Figure 14 or Figure 15.

[0144] Referring to FIGS. 18 to 22, the container carrier (1) may further include a position adjusting member (40) for adjusting the position and number of loading stages of the container loading assistance device (100).

[0145] The position adjustment member (40) is arranged horizontally between the neighboring lower cell guides (31) in each of the plurality of cells (18) inside the cargo hold (17), and at least one may be installed in the transverse bulkhead (16) that partitions the cargo hold (17).

[0146] The position adjustment member (40) can be configured to be able to accommodate a container loading assistance device (100) lowered into the cargo hold (17) through a groove formed in the upper deck (11).

[0147] The position adjustment member (40) may be composed of at least one of a fixed stopper (41), a sliding stopper (42), and a hinged stopper (43a, 43b, 43c).

[0148] Referring to Fig. 18, the position adjustment member (40) may be a fixed stopper (41).

[0149] A pair of fixed stoppers (41) are horizontally arranged between the neighboring lower cell guides (31) in each of the plurality of cells (18), and are installed on the transverse bulkhead (16) so as to correspond to the protruding member (120) of the container loading assistance device (100) so as to be able to support the protruding member (120).

[0150] Referring to Fig. 19, the position adjustment member (40) may be a sliding stopper (42).

[0151] A pair of sliding stoppers (42) can be installed so as to be movable along a rail (42a) installed horizontally on a transverse bulkhead (16) between neighboring lower cell guides (31) in each of a plurality of cells (18).

[0152] The sliding stopper (42) can be moved left and right when the container loading auxiliary device (100) is raised and lowered so that the protruding member (120) is placed (illustrated in solid lines in the drawing), or moved to the middle so that the protruding member (120) does not interfere (illustrated in dotted lines in the drawing).

[0153] Referring to FIGS. 20 to 22, the position adjustment member (40) may be a hinge-type stopper (43a, 43b, 43c) that rotates in various ways.

[0154] A pair of hinge-type stoppers (43a, 43b, 43c) are horizontally arranged between neighboring lower cell guides (31) in each of the plurality of cells (18), and a pair can be installed so as to be rotatable on the transverse bulkhead (16) near the position where the protruding member (120) passes.

[0155] The hinge-type stopper (43a, 43b, 43c) can be rotated in one direction to allow the protruding member (120) to be placed when the container loading auxiliary device (100) is raised or lowered (illustrated in a solid line in the drawing), or can be rotated in the other direction to prevent the protruding member (120) from interfering (illustrated in a dotted line in the drawing).

[0156] Fig. 22(a) is a side view of the hinge-type stopper (43c) showing a rotated state. Fig. 22(b) is a plan view of the hinge-type stopper (43c) showing a rotated state so that the protruding member (120) can be placed. Fig. 22(c) is a plan view of the hinge-type stopper (43c) showing a rotated state so that the protruding member (120) can pass through.

[0157] In this way, the position adjustment member (40) can be composed of various types of stoppers, such as a fixed stopper (41), a sliding stopper (42), and a hinge-type stopper (43a, 43b, 43c), and these various stoppers can be used in parallel.

[0158] For example, when a fixed stopper (41) is installed at an arbitrary position of a transverse bulkhead (16), by installing at least one sliding stopper (42) or a hinged stopper (43a, 43b, 43c) on the transverse bulkhead (16) above or below the fixed stopper (41), it is possible to install at least two container loading auxiliary devices (100) in each of a plurality of cells (18) inside the cargo hold (17).

[0159] As another example, when the fixed stopper (41) is not installed at any location of the transverse bulkhead (16), by installing at least one sliding stopper (42) or hinged stopper (43a, 43b, 43c) at the transverse bulkhead (16), it is possible to install at least one container loading auxiliary device (100) in each of the plurality of cells (18) inside the cargo hold (17).

[0160] In embodiments, the container carrier (1) may include lower cell guides (31) installed at regular intervals on the side of the transverse bulkhead (16) in the cargo hold (17), and upper cell guides (32) installed on the top bridges (20, 20-1, 20a, 20b) corresponding thereto and connected to the lower cell guides (31). In this way, the ability to continuously load containers (C) from the bottom of the cargo hold (17) to the top of the upper deck (11) may be similar to the open-top of a conventional small container carrier, but the container carrier (1) according to the embodiments can load containers (C) in bulk in 13 or more stages, including the amount loaded from the bottom of the cargo hold (17) to the top of the upper deck (11), due to the role of the container loading auxiliary device (100, 100a) arranged in the central portion of the lower cell guide (31) and the upper cell guide (32), the top bridge (20, 20-1, 20a, 20b) installed on the upper deck (11), and the upper cell guide (32).

[0161] A container carrier (1) according to embodiments omits the existing lashing system applied to the existing lashing bridge and applies a cell guide system in which an upper cell guide (32) is provided on the top bridge (20). Hereinafter, with reference to FIGS. 23 and 24, the loading stability of a container (C) in the cell guide system according to embodiments and the existing lashing system will be compared and explained.

[0162] FIGS. 23 and 24 are drawings for comparing and explaining the loading stability of a container in a cell guide system according to one embodiment and a conventional lashing system.

[0163] Figure 23 (a) illustrates the load acting on the socket foundation section during internal lashing in the existing lashing system applied to the existing lashing bridge. It illustrates that the compressive load due to self-weight and the lateral load due to hull movement act as an additional compressive load on the socket foundation section as a moment component.

[0164] Figure 23 (b) shows the load acting on the socket foundation section during external lashing in the existing lashing system applied to the existing lashing bridge. It shows that the compressive load due to self-weight and the lateral load due to hull movement act as an additional compressive load on the socket foundation section as a moment component, but the load is relatively reduced compared to internal lashing.

[0165] Fig. 23 (c) illustrates that in the existing lashing system applied to the existing lashing bridge, as shown in Fig. 23 (a) and (b), the excessive hull motion load acts as an imperfect element on the hatch cover and lashing system, causing movement of the hatch cover and relative displacement of the deck stool and hatch cover and the hull, resulting in damage to the socket foundation, and this damage to the socket foundation is the main cause of container collapse and loss.

[0166] FIG. 24 illustrates the loads acting on the first and second fitting members (141, 142) as socket foundation parts of the container loading assistance device (100, 100a) when applying the cell guide system and container loading assistance device (100, 100a) according to embodiments in which the upper cell guide (32) is arranged on the top bridge (20). The compressive load due to self-weight and the transverse load due to the movement of the hull are absorbed by the upper cell guide (32), so that no additional compressive force is generated. In addition, a margin equivalent to the general structural strength of the hull (10) can be secured for the load due to the movement of the hull (10), the influence of the relative displacement of the hull (10) is minimal, and the domino collapse phenomenon of the container (C) due to damage to the loaded container (C) due to load concentration and collapse of the lashing system can be fundamentally prevented.

[0167] A container carrier (1) according to embodiments omits the existing lashing system applied to the existing lashing bridge and applies a cell guide system in which an upper cell guide (32) is provided on the top bridge (20). Hereinafter, referring to FIGS. 25 to 27, the loading stability of a container (C) in the cell guide system according to embodiments and the existing lashing system will be compared and explained, thereby clarifying that the present invention is differentiated from the existing one.

[0168] Figures 25 to 27 are tables for comparing and explaining the loading stability of containers in a cell guide system according to one embodiment and a conventional lashing system.

[0169] Figure 25 is a table obtained by calculating racking force, corner post force, and twistlock force when containers are loaded in 12 stages on the upper hatch cover of the upper deck of the hull and the containers are lashed in 3 stages using the lashing system in the existing lashing system applied to the existing lashing bridge.

[0170] Racking force is the force applied to the loaded container (C) in the inclined direction due to the effect of the hull rolling, corner post force is the force applied upward and downward to the four corners (post) of the loaded container, and twistlock force is the force applied to the connecting member (twistlock) that connects the containers due to the movement of the hull.

[0171] Fig. 26 is a table obtained by calculating racking force, corner post force, and twistlock force in a cell guide system according to embodiments in which an upper cell guide (32) is arranged on a top bridge (20), when containers (C) are loaded in 12 stages on a container loading auxiliary device (100), and the cell guide system is applied up to 4 stages based on the container loading auxiliary device (100).

[0172] FIG. 27 is a table of analysis results of racking force, corner post force, and twistlock force in the existing lashing system and the cell guide system according to the embodiments, based on the tables of FIGS. 25 and 26.

[0173] As shown in Fig. 27, when the loaded container (C) moves left and right during the rolling motion of the container carrier, the corner post force applied at the maximum value of the motion acceleration was analyzed. Compared to the allowable value of 848 kN, in the case of the existing lashing system (three-tier container lashing bridge), it was found to exceed the allowable value of 927.5 kN at the lowest level of the loaded container on the top of the hatch cover, which may lead to a container collapse accident. On the other hand, in the case of the cell guide system according to the embodiments (a structure that supports up to four tiers of containers (C) loaded on top of the container loading auxiliary device (100, 100a) with cell guides), the cell guides absorb the motion acceleration up to the four tiers of the loaded containers, so it can be seen that there is no risk of container collapse as the maximum value is below the allowable value of 805.7 kN.

[0174] In addition, although not shown in the drawing, under the same conditions of loading 12 tiers of containers (C) and loading small containers (20 ft containers) from tier 1 to tier 10, in the existing lashing system, there is no lashing when loading 20 ft containers on the top of the hatch cover (if lashing is only on one side, a worse condition than not lashing occurs), but in the cell guide system according to the embodiments (a structure that supports up to 5 tiers of containers (C) with cell guides), the cell guides support the containers (C), so that, unlike the existing lashing system, load transfer is possible in a purely lateral direction (same load transfer as inside the cargo hold), and the design safety factor of the embodiments can be increased by about 8 times compared to the existing design safety factor at the twist lock allowable load (Min. breaking 500 kN (per person), 420 kN (shear)). In other words, when the cell guide system according to the embodiments is applied, it is expected that superior stability will be secured compared to the existing lashing system under the harsh sailing conditions of loading 20 ft containers.

[0175] Fig. 28 is a perspective view illustrating a method for unloading containers using a container loading assistance device on a container carrier according to one embodiment. Fig. 29 is a flowchart illustrating a method for unloading containers using a container loading assistance device on a container carrier according to one embodiment. Fig. 30 is another flowchart illustrating a method for unloading containers using a container loading assistance device on a container carrier according to one embodiment.

[0176] Referring to FIGS. 28 and 29, an embodiment of a container unloading method using a container loading assistance device (100, 100a) on a container carrier (1) is described.

[0177] In the embodiments, a container loading auxiliary device (100, 100a) used in a container unloading method is applied to at least one cargo hold (17) of a container carrier (1) that loads containers (C) so as to load containers (C) upward, and includes an upper frame (111) and a lower frame (112) having a width and a length that are 1 to n times (n is a natural number) the width and the length of the container (C) but having a flat surface smaller than the entrance of the cargo hold (17), a support (113) arranged in the height direction with respect to the upper frame (111) and the lower frame (111), a protruding member (120) that protrudes outward from the upper frame (111) and the lower frame (112) or the support (113) so as to be able to be placed at any position of the cargo hold (17), and a coupling member (170) that connects two or more upper frames (111) and lower frames (112) that are arranged adjacent to each other. Can be.

[0178] Hereinafter, a method for unloading containers (C) from a container carrier (1) including a container loading auxiliary device (100, 100a) will be described in detail.

[0179] First, the work of loading a container (C) on land (2) onto a container carrier (1) using a crane (CR) is described.

[0180] By performing the task of loading the container (C) into the cargo hold (17) using a crane (CR), the loading of the container (C) into the cargo hold (17) can be completed (step S11).

[0181] Container loading auxiliary devices (100, 100a) can be connected in parallel using a coupling member (170) (step S12).

[0182] In the embodiments, when transporting the container loading auxiliary devices (100, 100a) connected in parallel with the crane (CR), it is preferable to connect them in an odd number to align the center of gravity. For example, when transporting the container loading auxiliary devices (100, 100a) using a spreader (SR) attached to the crane (CR), since the spreader (SR) is connected to the container loading auxiliary device (100, 100a) located in the middle of the container loading auxiliary devices (100, 100a) connected in parallel, it is necessary to connect them in an odd number to easily align the center of gravity during transport.

[0183] Container loading auxiliary devices (100, 100a) can be transported in a parallel state using a crane (CR) (step S13).

[0184] Container loading auxiliary devices (100, 100a) can be placed at any location on the cargo hold (17) using a crane (CR) (step S14).

[0185] In step S14, the container loading auxiliary devices (100, 100a) can be transported from a state stored on land (2) to the cargo hold (17) of the container carrier (1) using a crane (CR).

[0186] By using a crane (CR), the work of loading containers (C) onto the upper portion of a container loading auxiliary device (100, 100a) can be performed, so that loading of containers (C) onto the upper portion of the container loading auxiliary device (100, 100a) can be completed (step S15).

[0187] Below, the work of unloading containers (C) from a container carrier (1) to land (2) using a crane (CR) is described.

[0188] The task of unloading a container (C) loaded on top of a container loading auxiliary device (100, 100a) using a crane (CR) is performed (step S16).

[0189] By removing the container loading auxiliary devices (100, 100a) from the entrance of the cargo hold (17) using a crane (CR), the entrance of the cargo hold (17) can be opened (step S17).

[0190] In step S17, the container loading auxiliary devices (100, 100a) can be transported to any location on the upper deck (11) in a parallel state and stored on the upper deck (11), and can be transported to land (2) and stored on land (2).

[0191] The task of unloading containers (C) loaded inside the cargo hold (17) can be performed using a crane (CR) (step S18).

[0192] In embodiments, when a container carrier (1) includes a hull (10) having an upper deck (11), a side plate (12), and a bottom plate (13) forming the exterior, a cargo hold (17) partitioned by a transverse bulkhead (16) inside the hull (10), lower cell guides (31) installed at regular intervals on the sides of the transverse bulkheads (16), a top bridge (20) that extends to the left and right edges of the upper deck (11) between the cargo holds (17) and is arranged in a plurality of rows in the longitudinal direction of the hull (10), and an upper cell guide (32) that is connected to each of the lower cell guides (31) and is installed on both sides of the top bridge (20), the upper cell guide (32) is connected in parallel to a container loading auxiliary device (100, 100a) using a coupling member (170) (step S12), using a crane (CR). When placed on the upper deck (11) of the entrance of the cargo hold (17) (step S14) or removed from the entrance of the cargo hold (17) (step S17), it can be inserted into the gap between the container loading auxiliary devices (100, 100a) connected in parallel to guide the lifting.

[0193] Referring to FIGS. 28 and 30, another method of unloading a container using a container loading assistance device (100, 100a) on a container carrier (1) according to one embodiment is described.

[0194] In embodiments, a container loading auxiliary device (100, 100a) used in a container unloading method may include an upper frame (111) and a lower frame (112) having a width and a length that are 1 to n times (n is a natural number) the width and the length of the container (C) but having a flat surface smaller than the entrance of the cargo hold (17), a support (113) arranged in the height direction of the upper frame (111) and the lower frame (112), and a protruding member (120) protruding outward from the upper frame (111) and the lower frame (111, 112) or the support (113) so as to be placed at the entrance of the cargo hold (17) so as to be mounted thereon.

[0195] Hereinafter, a method for unloading a container from a container carrier (1) including container loading auxiliary devices (100, 100a) is specifically described.

[0196] First, the work of loading a container (C) on land (2) onto a container carrier (1) using a crane (CR) is described.

[0197] By performing the task of loading the container (C) into the cargo hold (17) using a crane (CR), the loading of the container (C) into the cargo hold (17) can be completed (step S21).

[0198] The container loading auxiliary device (100, 100a) can be placed at any location on the cargo hold (17) using a crane (CR) (step S22).

[0199] In step S22, the container loading auxiliary devices (100, 100a) are transported from a state stored on land (2) to a cargo hold (17) of a container carrier (1) using a crane (CR), or are transported from a state stored at an arbitrary location on the upper deck (11) of the container carrier (1) to a cargo hold (17) of the container carrier (1) using a crane (CR).

[0200] By performing the task of loading containers (C) onto the upper portion of the container loading auxiliary device (100, 100a) using a crane (CR), the loading of containers (C) onto the upper portion of the container loading auxiliary device (100, 100a) can be completed (step S23).

[0201] Below, the work of unloading containers (C) from a container carrier (1) to land (2) using a crane (CR) is described.

[0202] The work of unloading containers (C) loaded on top of the container loading auxiliary device (100, 100a) using a crane (CR) is performed (step S24).

[0203] The work of removing the container loading auxiliary device (100, 100a) from the entrance of the cargo hold (17) using a crane (CR) is performed, and the container loading auxiliary device (100, 100a) to be removed can be lowered to the land (2) or moved to any location on the upper deck (11) to open the entrance of the cargo hold (17) (step S25).

[0204] In step S25, the container loading auxiliary device (100, 100a) can be transported to any location on the upper deck (11) and stored on the upper deck (11), and can be transported to land (2) and stored on land (2).

[0205] The task of unloading containers (C) loaded inside the cargo hold (17) can be performed using a crane (CR) (step S26).

[0206] In embodiments, when a container carrier (1) includes a hull (10) having an upper deck (11), a side plate (12), and a bottom plate (13) forming the exterior, a cargo hold (17) partitioned by a transverse bulkhead (16) inside the hull (10), lower cell guides (31) installed at regular intervals on the sides of the transverse bulkheads (16), a top bridge (20) that is installed to extend to the left and right edges of the upper deck (11) between the cargo holds (17) and is arranged in a plurality of rows in the longitudinal direction of the hull (10), and upper cell guides (32) that are connected to each of the lower cell guides (31) and installed on both sides of the top bridge (20), the container loading auxiliary device (100, 100a) stacks containers between the top bridges (20) facing each other in the front-rear direction on the upper deck (11) in step S25 of opening the entrance of the cargo hold (17). It can be stored or stored by being placed on land (2).

[0207] According to this structure, by providing a top bridge (20, 20-1, 20a, 20b) on which an upper cell guide (32) is installed, the container (C) can be supported and fixed by the upper cell guide (32), so that the existing lashing system (fastening device such as a lashing rod or a lashing bar) can be omitted, which reduces material costs as well as the time and cost consumed for lashing work. In addition, when a container carrier (1) is operated, the problem of damage or loss of the loaded container (C) due to directly supporting the container (C) on the upper deck (11) can be solved, and in addition, since the upper cell guide (32) provided on the top bridge (20, 20-1, 20a, 20b) and the lower cell guide (31) installed on the transverse bulkhead (16) are respectively connected, continuous loading or unloading work can be possible without additional work such as hatch cover installation or lashing work when unloading a container (C).

[0208] In addition, according to embodiments, by configuring a container loading auxiliary device (100, 100a) so that it can be installed at the entrance of the cargo hold (17) of a container carrier (1), not only can it contribute to the longitudinal strength of the hull (10) when installed at the entrance of the cargo hold (17), but also the loading load of the container (C) loaded on the upper deck (11) can be transferred to the hull (10), so that a large quantity of containers (C) of 13 or more levels, including the amount loaded on the upper deck (11) from the bottom of the cargo hold (17), can be stacked.

[0209] In addition, the present embodiment configures a container loading auxiliary device (100, 100a) so that it can be transported by one or more cranes (CR) and can be self-stacked, thereby facilitating handling for placement at the entrance of a cargo hold (17) of a container carrier (1), enabling convenient storage on a container carrier (1) or land (2), and facilitating transport from land (2) to a transport vehicle (TR).

[0210] In addition, according to embodiments, the container loading assistance device (100, 100a) can secure rigidity capable of supporting the load of containers (C) loaded on top by having a reinforcing frame (130), a first plate (151) and a second plate (152), and all or part of the reinforcing frame (160).

[0211] In addition, according to embodiments, by arranging first and second fitting members (141, 142) corresponding to the corner casting of the container (C) on the upper surface of the container loading assistance device (100, 100a), not only can the container loaded on the upper surface be safely fixed, but also a 20-foot small container (C) and a 40-foot large container (C) can be stacked together.

[0212] In addition, according to embodiments, instead of omitting the lashing bridge, the top bridge (20, 20-1, 20a, 20b) is configured as a cell guide system in which the upper cell guide (32) and the lower cell guide (31) installed on the transverse bulkhead (16) are each connected, thereby minimizing the width compared to the existing lashing bridge, and forming a complex structure in which the existing lashing bridge is installed into a simple structure, and minimizing the width of the upper deck (11) between the cargo holds (17) compared to the existing container carrier in which the existing lashing bridge is installed, thereby securing design flexibility (optimization possible due to the elimination of the hull length and other lashing systems) compared to the same specifications of the container carrier (1) or increasing the loading capacity of the container (C).

[0213] In addition, according to embodiments, by providing a position adjusting member (40) for adjusting the position of the container loading auxiliary device (100, 100a), one or more container loading auxiliary devices (100) can be installed at any position inside the cargo hold (17), thereby increasing the flexibility of loading containers (C).

[0214] Fig. 31 is a perspective view illustrating an embodiment of a container carrier and the supporting member, entry guide, and reinforcing member provided thereon. Fig. 32 is a perspective view illustrating the supporting member of Fig. 31. Figs. 33 to 35 are perspective and side views illustrating the entry guide and reinforcing member of Fig. 31.

[0215] As illustrated in FIGS. 31 to 35, a container carrier (1) according to one embodiment may further include a support member (200), an entry guide (300), and a reinforcing member (400).

[0216] The support member (200) is arranged at both ends of a plurality of tower bridges (20) based on the width direction of the hull (10), and can reinforce the structure and vibration of the hull (10) by connecting one of the plurality of tower bridges (20) adjacent to each other in the length direction among the plurality of tower bridges (20).

[0217] The top bridge (20) may include a plurality of vertical members (21) and a plurality of horizontal members (22). The plurality of vertical members (21) may include two outer vertical members (21a) arranged on the upper deck (11) on each side of the hull (10) in the width direction, and a plurality of intermediate vertical members (21b) arranged at regular intervals between the outer vertical members (21a).

[0218] At this time, a pair of support members (200) can connect the outer side of the outer vertical member (21a) between the upper horizontal member (22a) among the plurality of horizontal members (22) and the adjacent middle horizontal member (22b).

[0219] Referring to FIG. 32, each of the support members (200) may include a first support member (210), a second support member (220), a third support member (230), and a fourth support member (240). Hereinafter, each of the support members (200) is described as being formed by combining the first to fourth support members (210, 220, 230, 240), but is not necessarily limited thereto. For example, the first to fourth support members (210, 220, 230, 240) may be formed as an integral body, or the first and third support members (210, 230) and the second and fourth support members (220, 240) may be formed as an integral body, and the like.

[0220] Each of the first to fourth support members (210, 220, 230, 240) may have a 'ㄷ' shape with one side open and the other side closed. In the drawing, each of the first to fourth support members (210, 220, 230, 240) is depicted as having a 'ㄷ' shape, but may be configured in various shapes.

[0221] The first support member (210) can be connected to the other side opposite to the open side of the outer vertical member (21a) of one of the pair of tower bridges (20) spaced apart from each other in the front and rear.

[0222] The second support member (220) can be connected to the other side opposite to the open side of the outer vertical member (21a) of the other top bridge (20) among a pair of top bridges (20) spaced apart from each other in the front and rear.

[0223] The third and fourth support members (230, 240) can be placed between the first support member (210) and the second support member (220).

[0224] The third and fourth support members (230, 240) can be joined between the first support member (210) and the second support member (220) by connecting the other side opposite to the open side of the third support member (230) and the other side opposite to the open side of the fourth support member (240).

[0225] The third support member (230) may have one open side connected to the open side of the first support member (210). In this way, a single support member (200) having a hollow space may be formed by combining the first support member (210) and the third support member (230).

[0226] The fourth support member (240) may have one open side connected to the open side of the second support member (220). In this way, another support member (200) having a hollow space may be formed by combining the second support member (220) and the fourth support member (240).

[0227] The entry guide (300) is arranged at the top of each of the plurality of upper cell guides (32) to guide the container (C) when loading the container (C).

[0228] Referring to FIGS. 33 to 35, the entry guide (300) may include a first entry guide member (310) that guides the front or rear side of the container (C), and a second entry guide member (320) that guides one side of the container (C).

[0229] The first entry guide member (310) can be connected to the upper end of the upper cell guide (32) and can be extended upward at a certain angle so as to guide the front or rear side of the container (C).

[0230] The first entry guide member (310) may have a square shape with the lower width and upper width being the same.

[0231] The second entry guide member (320) may be connected to the upper end of the upper cell guide (32) and may extend upward. The second entry guide member (320) may have a trapezoidal shape with one side connected to the first entry guide member (310) and the width expanding in the left-right direction as it goes toward the top.

[0232] The second entry guide member (320) may include a first guide member (320a) having a first height and a second guide member (320b) having a second height higher than the first height.

[0233] The first and second guide members (320a, 320b) may include an inclined surface (321a, 321b) whose upper end is inclined at a certain angle so as to guide one side of the containers (C).

[0234] The inclined surface (321a) of the first guide member (320a) and the inclined surface (321b) of the second guide member (320b) may have the same width and length. In this way, since the first and second guide members (320a, 320b) have different heights and the lengths of the inclined surfaces (321a, 321b) are the same, the ratio at which the width expands in the left and right directions as it goes toward the top may be different.

[0235] However, although the lengths of the inclined surface (321a) of the first guide member (320a) and the inclined surface (321b) of the second guide member (320b) have been described as being the same, it is not necessarily limited thereto. For example, since the first and second guide members (320a, 320b) may have the same ratio of width expansion in the left and right directions as they go upward, the length of the inclined surface (321a) of the first guide member (320a) having the first height may be shorter than the length of the inclined surface (321b) of the second guide member (320b) having the second height.

[0236] An entry guide (300) having a first guide member (320a) of a first height and an entry guide (300) having a second guide member (320b) of a second height may be alternately arranged on the upper portion of each of the plurality of upper cell guides (32), but is not necessarily limited thereto.

[0237] The reinforcing member (400) can support the upper cell guide (32).

[0238] A tower bridge (20) may be composed of a combination of a plurality of vertical members (21) and a plurality of horizontal members (22). The plurality of horizontal members (22) may include an upper horizontal member (22a) forming the uppermost portion of the tower bridge (20), and a plurality of intermediate horizontal members (22b) arranged at regular intervals between the upper horizontal member (22a) and the upper deck (11).

[0239] The upper cell guide (32) can be placed on the upper side of the upper horizontal member (22a).

[0240] According to this structure, the reinforcing member (400) can support the upper cell guide (32) portion extending to the upper portion of the upper horizontal member (22a) of the top bridge (20) and / or the entry guide (300) arranged on the upper portion of the upper cell guide (32).

[0241] These reinforcing members (400) may protrude from the rear of the upper cell guide (32) toward the center of the top bridge (20) and may include first to fourth reinforcing members (410, 420, 430, 440).

[0242] The first reinforcing member (410) can be fixed on the rear surface of the upper cell guide (32) extending to the upper portion of the upper horizontal member (22a) of the top bridge (20), and can extend to the upper portion of the upper cell guide (32).

[0243] The second reinforcing member (420) may have one side vertically connected to the first reinforcing member (410), and its lower surface may be fixed on the upper horizontal member (22a). The second reinforcing member (420) may protrude toward the center of the top bridge (20).

[0244] The third reinforcing member (430) may have a lower surface connected to the upper surface of the second reinforcing member (420), and an upper surface connected to one side plane of the first entry guide member (310).

[0245] The fourth reinforcing member (440) may have a lower surface connected to the upper surface of the first reinforcing member (410), and an upper surface connected to one side plane of the first entry guide member (310).

[0246] In the embodiments, the first and second reinforcing members (410, 420) can support the upper cell guide (32), and the third and fourth reinforcing members (430, 440) can support the entry guide (300).

[0247] Referring to Fig. 31, the upper cell guide (32) is installed in front and behind each of the plurality of top bridges (20) based on the longitudinal direction of the hull (10), but can be arranged side by side along the width direction of the hull (10).

[0248] The upper cell guide (32) not only guides the lifting and lowering of containers (C) transported by the crane (CR), but can also support and fix containers (C) loaded on the upper deck (11).

[0249] As the height of the top bridge (20) increases, the upper cell guide (32) is vulnerable to external impact and its structural strength inevitably weakens, and this may become particularly severe towards the top. As a result, if the upper part of the upper cell guide (32) is damaged, the container (C) may be detached. Accordingly, the container carrier (1) according to the embodiments may further include protection bars (500a, 500b, 500c) to protect the hull (10) from impact applied to the upper cell guide (32) and to reinforce the structural strength. The protection bars (500a, 500b, 500c) may have various shapes, which will be described below with reference to FIGS. 36 to 38.

[0250] Fig. 36 is a plan view and a side view showing one embodiment of a protection bar installed on a container carrier. Fig. 37 is a plan view and a side view showing another embodiment of the protection bar shown in Fig. 36. Fig. 38 is a plan view and a side view showing another embodiment of the protection bar shown in Fig. 36.

[0251] As shown in (a) and (b) of each of FIGS. 36 to 38, a portion of the protection bar (500a, 500b, 500c) is fixed between a pair of upper cell guides (32) whose faces face each other, and the remaining portion can protrude a certain length outward from a pair of upper cell guides (32).

[0252] The protection bar (500a, 500b, 500c) may be provided to have a certain length and width on the lower part of the entry guide (300) that is relatively vulnerable to external impact and structural strength along the entire length of the upper cell guide (32), i.e., on the upper part of the upper cell guide (32).

[0253] The protection bar (500a, 500b, 500c) may include a spacer portion (510a, 510b, 510c) that is positioned between a pair of adjacent upper cell guides (32) to support and fix the pair of upper cell guides (32) apart from each other, and a separation prevention portion (520a, 520b, 520c) that extends a certain length from the spacer portion (510a, 510b, 510c) to the outside of the pair of upper cell guides (32) to prevent the containers (C) from being separated.

[0254] The spacer portion (510a, 510b, 510c) can fix a pair of adjacent upper cell guides (32).

[0255] The detachment prevention parts (520a, 520b, 520c) protrude outward from the upper cell guides (32), so that they can play a role in holding the container (C) when it leaves the upper cell guide (32) due to hull deformation, thereby preventing the container (C) from being detached from the upper cell guide (32).

[0256] Such spacer portions (510a, 510b, 510c) and anti-separation portions (520a, 520b, 520c) can be implemented in various forms.

[0257] Referring to Fig. 36, the protection bar (500a) may be configured as an integral body in which the spacer portion (510a) and the detachment prevention portion (520a) are formed integrally.

[0258] When the protection bar (500a) is integral, the spacer portion (510a) can be positioned between a pair of adjacent upper cell guides (32), and the detachment prevention portion (520a) can protrude outward from a pair of adjacent upper cell guides (32).

[0259] The spacer portion (510a) may have a thickness corresponding to the gap between a pair of adjacent upper cell guides (32), may have a length of 45 mm to 65 mm inward from the ends of the pair of upper cell guides (32), and may have a length of 1.4 m to 1.6 m from the top to the bottom. For example, the spacer portion (510a) may be formed as a rectangular hexahedron. Here, the numerical values ​​are merely examples and are not necessarily limited thereto, and it is to be noted that the numerical values ​​mentioned below are also not limited thereto.

[0260] The anti-separation portion (520a) has the same thickness as the spacer portion (510a), has a length of 30 mm to 50 mm outward from the ends of the pair of upper cell guides (32), and may have a length of 0.9 m to 1.1 m from the top to the bottom. At this time, the anti-separation portion (520a) may have its top aligned with the top of the spacer portion (510a). For example, the anti-separation portion (520a) may be formed as a rectangular hexahedron having a length smaller than that of the rectangular hexahedron of the spacer portion (510a) while its top is aligned with the top of the spacer portion (510a).

[0261] Additionally, the detachment prevention part (520a) may have a wedge-shaped end, and the length between the top and bottom may become shorter as it goes outward.

[0262] Referring to Fig. 37, the protection bar (500b) may be configured as a separate type in which the spacer portion (510b) and the separation prevention portion (520b) are separated.

[0263] When the protection bar (500b) is of a detachable type, the spacer portion (510a) is positioned between a pair of adjacent upper cell guides (32), but is positioned a certain distance inside from the ends of the pair of upper cell guides (32), and the detachment prevention portion (520b) protrudes outward from the pair of upper cell guides (32), but a portion of the spacer portion can be positioned between the pair of upper cell guides (32).

[0264] The spacer portion (510a) has a thickness corresponding to the gap between a pair of adjacent upper cell guides (32), has a length of 25 mm to 45 mm from one end to the other, and may have a length of 1.4 m to 1.6 m from the top to the bottom. For example, the spacer portion (510a) may be positioned between a pair of upper cell guides (32), but may be positioned a certain distance inside from the ends of the pair of upper cell guides (32), and may be formed in a rectangular hexahedron.

[0265] The detachment prevention portion (520b) has the same thickness as the spacer portion (510a), and has a length of 50 mm to 70 mm from one end to the other end. However, a portion disposed between a pair of adjacent upper cell guides (32) has a length of 1 / 3 of the total length, a portion protruding outward from a pair of upper cell guides (32) has a length of 2 / 3 of the total length, and may have a length of 0.9 m to 1.1 m from the top to the bottom. At this time, the upper end of the detachment prevention portion (520b) may coincide with the upper end of the spacer portion (510a). For example, the anti-separation portion (520b) may be formed as a rectangular hexahedron having a length smaller than that of the rectangular hexahedron of the spacer portion (510a) with a portion protruding outward from a pair of upper cell guides (32) and positioned between the pair of upper cell guides (32) and the upper end aligned with the upper end of the spacer portion (510a).

[0266] In addition, the anti-separation portion (520b) may have a wedge-shaped end, and the length between the top and bottom may be the same between the pair of upper cell guides (32) and may become shorter as it goes outward outside the pair of upper cell guides (32). The reason why a part of the anti-separation portion (520b) according to one embodiment is positioned between the pair of upper cell guides (32) is to increase the fixing force because, unlike the aforementioned integrated protection bar (500a), it is formed separately from the spacer portion (510a).

[0267] Referring to FIG. 38, the spacer portion (510c) and the detachment prevention portion (520c) of the protection bar (500c) according to one embodiment may be configured in an overlapping manner.

[0268] When the protection bar (500c) is of the overlapping type, the spacer portion (510c) is provided as a pair and is placed between a pair of adjacent upper cell guides (32), and each of the pair of spacer portions (510c) is spaced apart from each other by a certain distance and is in close contact with each surface of the pair of upper cell guides (32), and the separation prevention portion (520c) protrudes outward from the pair of upper cell guides (32), and a portion thereof can be positioned and fixed between the pair of spacer portions (510c).

[0269] Each of the pair of spacer portions (510c) may have a thickness corresponding to 1 / 3 to 1 / 4 of the gap between the pair of upper cell guides (32), a length of 45 mm to 65 mm inward from the ends of the pair of upper cell guides (32), and a length of 1.4 m to 1.6 m from the top to the bottom. For example, each of the pair of spacer portions (510c) may be provided as a pair and positioned between the pair of upper cell guides (32), but each of the pair of spacer portions (510c) may be positioned so as to be spaced apart from each other by a certain distance and come into close contact with each surface of the pair of upper cell guides (32), and may be formed in a rectangular hexahedron.

[0270] Additionally, each of the pair of spacer portions (510c) may extend a certain length outward from the ends of the pair of upper cell guides (32), and the extending portion may have a chamfer shape.

[0271] The detachment prevention portion (520c) has a thickness corresponding to the gap between the pair of spacer portions (510c), a length of 85 mm to 105 mm from one end to the other end, a length of 45 mm to 65 mm inward from the ends of the pair of upper cell guides (32), a length of 30 mm to 50 mm outward from the ends of the pair of upper cell guides (32), and a length of 0.9 m to 1.1 m from the top to the bottom. At this time, one end and the top of the detachment prevention portion (520c) may be aligned with one end and the top of the pair of spacer portions (510c). For example, the anti-separation portion (520c) may be formed as a rectangular hexahedron having a length smaller and a width larger than the rectangular hexahedron of the pair of spacer portions (510c), with one end and an upper end aligned with the one end and the upper end of the pair of spacer portions (510c) and the other end extending outward from the other end of the pair of spacer portions (510c).

[0272] In addition, the anti-separation part (520c) may have a rounded end, and the length between the upper and lower ends may be formed to be the same between a pair of upper cell guides (32) and to become shorter as it goes outward outside a pair of upper cell guides (32).

[0273] Figure 39 is a side view showing one embodiment of an upper cell guide.

[0274] Referring to Fig. 39, the upper cell guide (32) installed on a container carrier (1) according to one embodiment may be installed on both sides of the top bridge (20). However, as described above, the top bridge (20) is not a lashing bridge to which a conventional lashing system is applied, but rather a cell guide system to which an upper cell guide (32) is applied, and thus may be relatively weaker in terms of strength compared to the conventional lashing system.

[0275] When supporting and fixing multi-layer containers (C) with upper cell guides (32) installed on such a top bridge (20), if the container (C) shakes due to the movement of the hull (10) and eventually tilts to one side, and an excessive lateral load is applied to the upper cell guide (32) and / or the top bridge (20), there is a risk that the upper cell guide (32) and / or the top bridge (20) may be damaged, and in severe cases, the container (C) may overturn. Accordingly, the embodiments can provide a method for minimizing the shaking of the top bridge (20).

[0276] The upper cell guide (32) is used when small containers (C) or large containers (C) are loaded in 5-tier levels. Containers (C) in the lower tiers (e.g., 1st to 3rd tiers) are close to the upper deck (11) and therefore rarely shake, but containers (C) in the higher tiers (e.g., 4th to 5th tiers) may shake relatively more, so stability can be secured by installing twist locks (TL) in containers (C) loaded in the higher tiers.

[0277] The drawing depicts twist locks (TL) being installed on containers (C) stacked on four to five levels to reduce installation work, but this is not necessarily the case. For example, if necessary, twist locks (TL) can also be installed on containers (C) stacked on one to three levels.

[0278] Since the twist lock (TL) is installed on the corner fitting of the lower container (C) and the corner fitting of the upper container (C), it is not easy to inspect whether it is installed or if there is an installation error. Therefore, if there is no installation standard for the twist lock (TL), the installation of the twist lock (TL) may be omitted in the container (C) of the same level where the twist lock (TL) should be installed, or the twist lock (TL) may be installed in the container (C) of the lower level where the installation of the twist lock (TL) is not required. This not only causes confusion in the twist lock (TL) installation work, but also leads to a problem that a major accident may occur if the container (C) is unloaded without removing the twist lock (TL).

[0279] To solve this problem, a twist lock zone (TW) that can be easily confirmed with the naked eye can be formed in the top bridge (20) or upper cell guide (32). The twist lock zone (TW) can be marked so that the upper and lower containers (C) loaded in a high layer among the containers (C) loaded in multiple layers can be fastened to each other with a twist lock (TL).

[0280] The twist lock zone (TW) is set based on a container (C) loaded in a specific area (an area corresponding to level 4 to 5) among multi-layer containers (C) loaded between upper cell guides (32), and a twist lock (TL) is fastened to a container (C) loaded above the twist lock zone (TW) to ensure stability against installation errors and installation errors.

[0281] These twist lock zones (TW) can be implemented by painting a specific color of paint on the support structure or upper structure of the top bridge (20) or upper cell guide (32) corresponding to a specific area (area corresponding to level 4 to 5) or by installing a visually visible indicator structure so that the twist lock (TL) can serve as an indicator as to whether it is properly installed.

[0282] When the twist lock zone (TW) is displayed in an area corresponding to levels 4 and 5, as shown in Fig. 39 where containers (C) are arranged in two rows, the lower limit height can be displayed between levels 3 and 4 based on small containers (C), and the upper limit height can be displayed between levels 4 and 5 based on large containers (C).

[0283] The Twistlock Zone (TW) serves as a guideline setting standard for ensuring that all containers (C) loaded above it, including those whose height extends partway over the target area, are equipped with Twistlocks (TL). For example, the Twistlock Zone (TW) allows for the creation of visual inspection guidelines based on the installation guide.

[0284] The visual inspection guide allows you to check items such as whether the twist lock (TL) is installed and the locking status of the twist lock (TL) above the specified area.

[0285] Although the twist lock zone (TW) is described above as being mainly displayed on the upper cell guide (32), the twist lock zone (TW) may also be displayed on the top bridge (20) where the upper cell guide (32) is installed in the same manner as described above.

[0286] In embodiments, the upper cell guide (32) may be made of a different material from the lower cell guide (31).

[0287] The upper cell guide (32) according to the embodiments applied to the lashing-free container carrier (1) must guide the container (C) loaded on the upper deck (11), and therefore may be made of a material with higher strength than the lower cell guide (31) installed on the transverse bulkhead (16) of the cargo hold (17). For example, the upper cell guide (32) may be made of a second high-strength steel having a higher grade than the first high-strength steel forming the lower cell guide (31).

[0288] In addition, the upper cell guide (32) may be formed of second high-strength steel, but the entry guide (300) portion may be formed of a flexible material. In embodiments, the entry guide (300) portion may be damaged by impact from the container (C) during loading or unloading operations, and thus may be formed of a flexible material to mitigate impact. For example, the flexible material may be a metal+rubber composite material, a steel core+rubber sandwich material, or a plastic material that has excellent friction and wear resistance and high durability.

[0289] Hereinafter, with reference to FIG. 40, a container unloading method of a container carrier (1) including a container loading assistance device (100, 100a), a twist lock zone (TW), and an upper cell guide (32) will be described in more detail.

[0290] Figure 40 is a flowchart for explaining a container unloading method using the upper cell guide shown in Figure 39.

[0291] First, let's explain how to load a container (C).

[0292] By performing the task of loading the container (C) into the cargo hold (17) using a crane (CR), the loading of the container (C) into the cargo hold (17) can be completed (step S31).

[0293] Using a crane (CR), the container loading auxiliary device (100, 100a) can be lowered into the guide path while being guided by the upper cell guide (32) (step S32).

[0294] The container loading auxiliary device (100, 100a) can be placed at any location on the cargo hold (17) using a crane (CR) (step S33).

[0295] The container loading auxiliary devices (100, 100a) can be transported using a crane (CR) either singly or in parallel using a coupling member (170). When transporting the parallel-connected container loading auxiliary devices (100, 100a) using a crane (CR), they can be connected in an odd number to balance the center of gravity, but this is not necessarily limited thereto.

[0296] By using a crane (CR) to load a container (C) onto the upper portion of a container loading auxiliary device (100, 100a) through an upper cell guide (32), containers (C) can be loaded onto the upper portion of the container loading auxiliary device (100, 100a) (step S34).

[0297] Among the containers (C) loaded in multiple layers between the upper cell guides (32), the upper and lower layers of containers (C) loaded in the area corresponding to the twist lock zone (TW) indicated on the upper cell guide (32) can be fastened with a twist lock (TL) (step S35).

[0298] As described above, the twist lock zone (TW) can be marked with a paint of a specific color from the entry guide (300) to a certain height of the upper cell guide (32) or can be marked using a visually visible marking structure, and in the case where the containers (C) loaded in multiple layers are at 5 levels, the twist lock (TL) can be marked on a part corresponding to the 4th to 5th levels so that the twist lock (TL) is not fastened to the containers (C) loaded in the lower 1st to 3rd levels and the twist lock (TL) can be fastened only to the containers (C) loaded in the higher 4th to 5th levels.

[0299] Next, the installation of the twist lock (TL) and any installation errors can be checked, and the loading operation of the container (C) can be completed (step S36).

[0300] The task of checking whether the twist lock (TL) is installed and whether there is an installation error performed in step S36 is important. This is because the twist lock (TL) is installed in containers (C) loaded between upper cell guides (32), and thus the twist lock (TL) may interfere with the upper cell guide (32) and not be clearly visible, resulting in the possibility of missing installation or failure to install in the correct position.

[0301] After the loading operation of the container (C) is completed (step S36), the container is transported to the destination by a container carrier (1), and at the destination, an unloading operation is performed to unload the containers (C) from the container carrier (1) to land. The method of unloading the containers (C) is described below.

[0302] The locking device of the twist lock (TL) can be released to unload containers (C) loaded on top of the container loading auxiliary device (100, 100a) using a crane (CR) (step S37).

[0303] After checking whether the lock of the twist lock (TL) is released, the unloading operation of the container (C) can be performed (step S38).

[0304] The task of checking whether the twist lock (TL) locking device is released in step S38 is important. This is because the twist lock (TL) is installed in containers (C) loaded between upper cell guides (32), and thus, whether the twist lock (TL) is released cannot be easily confirmed because the twist lock (TL) is covered by the upper cell guide (32). If the unloading operation is performed while the twist lock (TL) locking device is not released, a major accident may occur.

[0305] In the case of step S37 of releasing the locking device of the twist lock (TL), the twist lock (TL) can be recovered by releasing the locking device of the twist lock (TL) from both the upper and lower containers (C) on the hull (10), but it is not necessarily limited thereto. For example, the twist lock (TL) can also be recovered after the containers (C) and the container loading auxiliary devices (100, 100a) are transported to land. Hereinafter, another method of recovering the twist lock (TL) will be described in more detail with reference to FIG. 41.

[0306] Figure 41 is a first partial flowchart for explaining a container unloading method in the container unloading method of Figure 40.

[0307] Referring to Fig. 41, only the locking device of the twist lock (TL) fastened to the upper surface of the lower container (C) among the upper and lower containers (C) can be released (step S41).

[0308] At this time, in step S38 of performing the task of unloading the container (C), when the container (C) on the upper floor is transported to the land (2) with the twist lock (TL) fastened to the lower surface, the locking device of the twist lock (TL) fastened to the lower surface of the container (C) on the land (2) is released, so that the twist lock (TL) can be recovered on the land (step S42).

[0309] Hereinafter, step S33 of placing a container loading auxiliary device (100, 100a) at an arbitrary position of a cargo hold (17) using a crane (CR) will be described in more detail with reference to FIGS. 42 and 43.

[0310] Figure 42 is a second partial flowchart for explaining a container loading method in the container unloading method of Figure 40. Figure 43 is a drawing for explaining the second partial flowchart of Figure 42.

[0311] First, a container (C) can be positioned on the upper surface of a container loading auxiliary device (100, 100a) installed on land (2) using a crane (CR) (step S331).

[0312] A container (C) and a container loading auxiliary device (100, 100a) can be fastened with a twist lock (TL) (step S332).

[0313] Using a crane (CR), the container (C) and the container loading auxiliary device (100, 100a) can be transported to the cargo hold (17) in a connected state (step S333).

[0314] Through this, the container loading auxiliary device (100, 100a) can be transported together with the container (C) rather than transported alone, thereby reducing the transport work of the crane (CR).

[0315] Hereinafter, step S38 of performing the task of unloading the container (C) will be described in more detail with reference to FIGS. 44 and 45.

[0316] Figure 44 is a third partial flowchart for explaining the container unloading method in the container unloading method of Figure 40. Figure 45 is a drawing for explaining the third partial flowchart of Figure 44. Figure 46 is a drawing showing a state in which container loading assistance devices are stacked in multiple layers and fastened with twist locks.

[0317] First, if the container loading auxiliary device (100, 100a) and the container (C) above it are not fastened with a twist lock (TL), a fastening operation can be performed (step S381).

[0318] Step S381 may be omitted if steps S331 to S333 described above have been performed.

[0319] A container (C) can be transported to land (2) together with a container loading auxiliary device (100, 100a) fastened with a twist lock (TL) using a crane (CR) (step S382).

[0320] The locking device of the twist lock (TL) that connects the container loading auxiliary device (100, 100a) and the container (C) on land (2) can be released (step S383).

[0321] The container loading auxiliary device (100, 100a) can be stored in a land-based storage area. The container loading auxiliary device (100, 100a) is used for transport between the land-based storage area and the container carrier (1) during loading or unloading of containers (C). In this case, in order to increase the efficiency of the transport, as illustrated in Fig. 46, after stacking in three or more stages, the devices can be connected vertically with twist locks (TL) so that multiple devices can be moved at once using a mobile crane or the like.

[0322] Figure 47 is a perspective view showing one embodiment of a top bridge and upper cell guide.

[0323] Fig. 47 (a) shows a top bridge (20) and an upper cell guide (32) according to one embodiment, and Fig. 47 (b) shows a conventional lashing bridge (20c).

[0324] Referring to (a) of FIG. 47, a plurality of tower bridges (20) according to one embodiment may be installed to extend to the left and right edges of the upper deck (11) between cargo holds (17) in the width direction of the hull (10), and may be arranged in a plurality of rows at regular intervals from the bow (14) to the stern (15) along the longitudinal direction of the hull (10). Upper cell guides (32) may be installed at regular intervals on both sides of the tower bridges (20).

[0325] In embodiments, the top bridge (20) may be a cell guide system in which an upper cell guide (32) is installed, rather than a conventional lashing bridge (20c) to which a lashing system for securing a container (C) is applied.

[0326] Referring to (b) of Fig. 47, the existing lashing bridge (20c) may be one of the known lashing bridges having various fittings and other components to prevent the container (C) loaded on the hatch cover from falling over, and accordingly, the specific configuration will not be described here, and the description will be centered on the part that is in contrast to the top bridge (20) of the present embodiment.

[0327] Referring again to (a) of FIG. 47, a top bridge (20) according to one embodiment is composed of a combination of a plurality of vertical members (21) and a plurality of horizontal members (22), and can be installed on the upper deck (11) that divides the cargo hold (17) between the left and right upper decks (11) on the outer side plate (12a) and inner side plate (12b) of a container carrier (1).

[0328] A plurality of vertical members (21) may be installed on the upper deck (11) in pairs at regular intervals in the longitudinal direction of the upper deck (11) that divides between adjacent cargo holds (17), and a plurality of horizontal members (22) may be installed on a pair of vertical members (21) in pairs at regular intervals in the upper direction of the upper deck (11).

[0329] In addition, between a pair of vertical members (21), a passage space (25a) through which a worker can pass for maintenance and monitoring of a control unit, etc., provided in a reefer container (C) may be provided in multiple layers at a certain interval in the vertical direction.

[0330] Each of these multiple-layer passage spaces (25a) can be connected to each of the other multiple-layer passage spaces (25a) provided between a pair of adjacent vertical members (21) by a passageway (26a), thereby enabling workers to perform maintenance work while moving.

[0331] In embodiments, the passageway (26a) may be a stringer and a floor member arranged between a pair of horizontal members (22) arranged in pairs in multiple layers, and an upper deck (11) that divides between cargo holds (17) where a top bridge (20) is installed. For example, the passageway (26a) may be arranged in multiple layers based on the upper deck (11), and the height between each layer may be determined in conjunction with the height of a reefer container (C).

[0332] The width of each of the passage space (25a) provided in the tower bridge (20) and the passageway (26a) connecting them can be determined by the width between a pair of vertical members (21) corresponding to the width of the tower bridge (20).

[0333] Referring to (b) of Fig. 47, a conventional lashing bridge (20c) in contrast to a top bridge (20) can be installed on the upper deck (11) that divides between adjacent cargo holds (17), and a passage space (25b) and a passageway (26b) can be formed on the upper deck (11) for lashing work and maintenance.

[0334] The existing lashing bridge (20c) is installed according to the minimum width (e.g., 600 mm) stipulated in the International Maritime Organization (IMO) code for the width of the passage space (25b) and passageway (26b). In the case of the existing lashing bridge (20c), space for installing a hatch cover must be secured, interference must be avoided when loading a container (C) onto a cargo hold (17) where a lower cell guide (31) is installed, and in addition, the above-mentioned International Maritime Organization code regulations must be complied with. Therefore, there is an inevitably limit to reducing the width of the upper deck (11) that divides the cargo holds (17) where the lashing bridge (20c) is installed.

[0335] That is, the existing lashing bridge (20c) must be installed in compliance with the code regulations of the International Maritime Organization, but must be installed with a width narrower than the width of the upper deck (11) that divides the cargo holds (17), so that the portion of the upper deck (11) that is outside the width range of the existing lashing bridge (20c) will not only remain as a useless area, but also there will inevitably be restrictions on reducing the overall size of the container carrier (1).

[0336] On the other hand, in the case of the top bridge (20) according to the embodiments, not only does it play a role of fixing and supporting the upper cell guide (32) that is integrally connected to the lower cell guide (31), but also since the container (C) is loaded by being guided to the upper cell guide (32), it does not affect interference with the container (C), so it can be installed on the edge of the upper deck (11) that divides between the cargo holds (17).

[0337] According to this structure, the top bridge (20) according to the embodiments can be formed with the same width as the width of the upper deck (11) that divides between adjacent cargo holds (17), so that not only can the portion of the upper deck (11) be utilized to the maximum extent, but also, when installed in compliance with the code regulations of the International Maritime Organization, an area of ​​the upper deck (11) that is not useful compared to the existing one can be eliminated, thereby reducing the overall size of the container carrier (1).

[0338] In addition, the top bridge (20) according to the embodiments can utilize even the area of ​​the upper deck (11) where the existing lashing bridge (20c) is installed, where the upper deck (11) is not useful, thereby securing a passage space (25a) and passageway (26a) wider than the code regulations of the International Maritime Organization.

[0339] Fig. 48 is a side view showing one embodiment of a cell guide device. Fig. 49 is a side view showing another embodiment of the cell guide device shown in Fig. 48.

[0340] Specifically, (a) of FIG. 48 is a side view showing the state of use of the cell guide device (600). (b) of FIG. 48 is a side view showing the state of operation of the cell guide device (600). (c) of FIG. 48 is a side view showing the state of not being used of the cell guide device (600).

[0341] Referring to FIG. 48, a container carrier (1) according to one embodiment may further include a cell guide device (600). The cell guide device (600) is a component that can extend the length of the upper cell guide (32), and may include an extension cell guide (610) and an operating unit (620).

[0342] The extension cell guide (610) may have a certain length with the same structure as the upper cell guide (32).

[0343] The extension cell guide (610) can be fixed in a straight line with the upper cell guide (32) by the operating unit (620) when loading the container (C), thereby supporting and fixing the container (C) or guiding the lifting and lowering of the container (C).

[0344] When the extension cell guide (610) is not loaded with a container (C), it can be separated from the upper cell guide (32) by the operating unit (620) and stored on the top of the top bridge (20), as shown in (b) and (c) of FIG. 48.

[0345] An entry guide (300) that guides a container (C) may be installed at the top of the upper cell guide (32). In this case, the extension cell guide (610) may be connected and fixed to or separated from the top of the entry guide (300).

[0346] The operating part (620) can operate the extension cell guide (610) and may include a fixed member (621), a hinge member (622), a rotating member (623), and a handle (624).

[0347] The fixed member (621) is fixed at the lower end to the upper end of the top bridge (20) and can be extended vertically to a certain length.

[0348] The hinge member (622) can be installed on the top of the fixed member (621) and enables rotation of the rotating member (623).

[0349] The rotating member (623) can be rotatably connected at one end to the hinge member (622), and the other end can be connected to the extension cell guide (610).

[0350] The rotating member (623) may be provided with a handle (624), and the extended cell guide (610) may be rotated using the handle (624).

[0351] Referring to Fig. 49, a container carrier (1) according to one embodiment may further include an extended entry guide (630). The extended entry guide (630) is installed at the upper end of the extended cell guide (610), thereby preventing the upper end from interfering with the container (C) when the extended cell guide (610) guides the lifting and lowering of the container (C).

[0352] The configuration of the extended entry guide (630) may be identical to that of the aforementioned entry guide (300), and thus a detailed description thereof will be omitted here. However, it should be understood that the extended entry guide (630) may be configured identically or similarly to the existing entry guide.

[0353] Fig. 50 is a perspective view showing one embodiment of a gap cover. Fig. 51 is an enlarged perspective view of a portion of Fig. 50 showing the upper portion of the gap cover. Fig. 52 is an enlarged perspective view of a portion of Fig. 50 showing the lower portion of the gap cover. Fig. 53 is a side view showing the gap cover shown in Fig. 50 as seen from the front. Fig. 54 is a front cross-sectional view showing the gap cover shown in Fig. 50 as seen from the side. Fig. 55 is a plan view showing the gap cover shown in Fig. 50 as seen from the top.

[0354] The hull (10), upper deck (11), top bridge (20), lower cell guide (31), upper cell guide (32), entry guide (300), and reinforcing member (400) illustrated in FIGS. 50 to 55 can be configured substantially the same as the hull (10), upper deck (11), top bridge (20), lower cell guide (31), upper cell guide (32), entry guide (300), and reinforcing member (400) described with reference to FIGS. 1 to 13 and FIGS. 31 to 35, and thus, redundant descriptions thereof will be omitted below. However, components structurally connected to the gap cover (700) to be described with reference to FIGS. 50 to 55 below will be additionally described together with the gap cover (700) if necessary.

[0355] Referring to FIGS. 50 to 55, a gap cover (700) can cover a space between one upper cell guide (32) and another upper cell guide (32) among a plurality of upper cell guides (32) adjacent to each other along the longitudinal direction of the hull (10). The upper cell guide (32) can have an L-shaped cross-section to cover the side and rear of the container (C).

[0356] Referring to FIG. 51, the gap cover (700) may include a gap cover body (710) formed in a plate shape, with both ends connected to one side of the first reinforcing member (410) and covering between adjacent pairs of the first reinforcing members (410). In embodiments, the gap cover body (710) may be formed integrally with the first reinforcing member (410), but is not necessarily limited thereto. For example, although not shown in the drawing, the gap cover body (710) may include a connecting member (not shown) such as a ring, and the gap cover body (710) and the first reinforcing member (410) may be connected to each other in such a way that the connecting member passes through a hole (not shown) formed on one side of the first reinforcing member (410). The gap cover body (710) may cover between adjacent pairs of the first reinforcing members (410) and is not limited in material, etc.

[0357] The gap cover (700) may further include an extension member (720) extending from both ends of the gap cover body (710) that contact one side of the first reinforcing member (410). In other words, the extension member (720) may extend from one side of the gap cover body (710) to one upper cell guide (32) based on the longitudinal direction of the hull (10), and may extend from the other side of the gap cover body (710) to another upper cell guide (32) positioned on the opposite side based on the gap cover body (710).

[0358] The extension member (720) may be formed by being bent in a direction toward the upper cell guide (32). In other words, the extension member (720) may have a sloped surface toward the upper cell guide (32), but is not necessarily limited thereto. For example, the extension member (720) may extend in a direction parallel to the gap cover body (710). According to this structure, the extension member (720) can support the upper cell guide (32) laterally, and since the extension member (720) includes a surface formed at the front and rear of the container carrier (1), the wind resistance of the hull (10) can be reduced.

[0359] Referring to FIGS. 52 to 54, the gap cover (700) may be supported by a stool (S) placed on the upper deck (11). Accordingly, an empty space may be formed between the left and right edges of the hull (10) in the width direction and the upper deck (11) and the container (C). A worker may move along this empty space.

[0360] In embodiments, the gap cover body (710) may be a closed type without holes, but is not necessarily limited thereto. For example, a hole may be formed in one area of ​​the gap cover body (710). If the container (C) is a reefer container, a hole may be formed in one area of ​​the gap cover body (710) for ventilation.

[0361] The gap cover body (710) can be placed on the left and right edges of the top bridge (20) on the upper deck (11), and by blocking the gap formed between adjacent upper cell guides (32), it can prevent air from being transmitted to the top bridge (20) or the gap, thereby generating wind resistance.

[0362] Fig. 56 is a perspective view showing embodiments of the gap cover illustrated in Fig. 50.

[0363] Figure 56 (a) is a drawing explaining the linear arrangement of the gap cover (700). Figure 56 (b) is a drawing explaining the inclined arrangement of the gap cover (700).

[0364] Referring to FIG. 56, in a container carrier (1), containers (C) can be loaded more widely left and right in the middle of the hull (10) than at the bow (14) or stern (15) of the hull (10). For example, a container (C) closer to the bow (14) can be loaded more narrowly left and right than a container (C) positioned further rearward. Conversely, a container (C) closer to the stern (15) can be loaded more narrowly left and right than a container (C) positioned further forward. In other words, a container (C) closer to the bow (14) or stern (15) can be loaded more narrowly in the width direction of the hull (10) than a container (C) closer to the center of the ship.

[0365] In this way, when the left-right width of the containers (C) loaded in the longitudinal direction of the container carrier (1) is different, a gap cover (700) can be placed at a certain angle with respect to the longitudinal direction of the container carrier (1) to cover the gap between adjacent containers (C) in the longitudinal direction of the container carrier (1).

[0366] Referring to (a) of FIG. 56, a gap cover (700) can be placed between containers (C) adjacent to each other in the longitudinal direction of the hull (10), and at this time, the gap cover (700) can be placed in a direction parallel to the side of the container (C).

[0367] Referring to (b) of FIG. 56, some of the gap covers (700) are arranged in a direction parallel to the side surfaces of the containers (C), but other parts of the gap covers (700) may be arranged in a direction intersecting the longitudinal direction of the container carrier (1) depending on the arrangement of the containers (C). The gap covers (700) may be arranged between adjacent containers (C) to cover the gaps between the containers (C). For example, the gap covers (700) may be arranged in a direction parallel to the direction in which one point of an edge created when the walls of one container (C) are connected and one point of an edge created when the walls of another container (C) adjacent to one of the containers (C) are connected are connected. In this case, the edge created when the walls are connected may be an edge in a direction facing outward from the hull (10) in a container (C) arranged at the outermost end of the hull (10).

[0368] According to this structure, the gap cover (700) can cover the space between the corner where the walls of one container (C) meet and the corner where the walls of another container (C) adjacent to one of the containers (C) meet.

[0369] Although not shown in the drawing, a top bridge (20) and / or an upper cell guide (32) may be arranged between containers (C) adjacent to each other in the longitudinal direction of the hull (10), and a gap cover (700) may cover at least one of the top bridge (20) and the upper cell guide (32).

[0370] As described above, since the left-right width length of the hull (10) can vary along the longitudinal direction of the hull (10), the left-right width length of the plurality of top bridges (20) can also vary according to the left-right width length of the hull (10).

[0371] Referring to Fig. 56, the gap cover (700b) may have a step formed on the lower surface, a portion of the lower surface may extend upward from the upper deck (11), and a portion of the lower surface may extend upward from a bulwark formed on the bow. The gap cover (700b) of this structure may be placed at a position along the longitudinal direction of the hull (10) such that the number of containers (C) stacked on the upper deck (11) varies.

[0372] Figure 57 is a graph showing the relationship between the wind load coefficient (Cx) and wind direction angle according to computational fluid dynamics (CFD).

[0373] Referring to Fig. 57, the wind resistance coefficient according to the longitudinal direction of the container carrier (1) and the angle of the wind toward the container carrier (1) was confirmed. When a gap cover (700) is installed between adjacent tower bridges (20) based on the longitudinal direction of the hull (10) regardless of the wind direction (Case 2), the wind resistance coefficient is reduced compared to when a lashing bridge is provided on the left and right edges of the hull (10) (Case 1). The lashing bridge may be the lashing bridge (20c) illustrated in Fig. 47 (b). The gap cover (700) may have a surface extending toward the container (C) compared to the lashing bridge.

[0374] In particular, as shown in Table 1 below, when the angle between the longitudinal direction of the container carrier (1) and the wind heading toward the container carrier (1) is 30 degrees, the improvement in wind resistance was the greatest, and at this time, the wind resistance was reduced by about 3% or more.

[0375] Case 1Case 2Wind resistance reduction rate -3%

[0376] While the present invention has been described above with reference to embodiments thereof, these are merely examples and are not intended to limit the present invention. Those skilled in the art will appreciate that various combinations, modifications, and applications not illustrated in the description of the embodiments are possible, as long as they do not depart from the essential technical content of the embodiments. Therefore, technical contents related to modifications and applications readily derived from the embodiments of the present invention should be construed as being included within the present invention.

Claims

1. A method for unloading multiple containers from a container carrier, The above container carrier, Hull including side plates, bottom plates, and upper deck; A plurality of cargo holds partitioned in the longitudinal direction of the hull by a plurality of transverse bulkheads inside the hull; A plurality of lower cell guides installed in front and behind each of the plurality of transverse bulkheads based on the longitudinal direction, but arranged in parallel along the width direction of the hull intersecting the longitudinal direction; A plurality of tower bridges extending upward from the plurality of transverse bulkheads, extending to the left and right edges of the upper deck in the width direction, and arranged in a plurality of rows along the length direction; A plurality of upper cell guides installed in front and behind each of the plurality of top bridges based on the longitudinal direction, and connected to the plurality of lower cell guides to provide a continuous guide path for the container; and A plurality of container loading auxiliary devices are introduced into the guide path while being guided by the plurality of upper cell guides, and are applied to at least one of the plurality of cargo holds so that at least one of the plurality of containers is loaded upward. A step of loading some of the plurality of containers into one of the plurality of cargo holds; A step of introducing one of the plurality of container loading auxiliary devices into the guide path and placing it on one of the cargo holds; and A container unloading method comprising the step of loading another part of the plurality of containers on top of one of the container loading auxiliary devices.

2. In paragraph 1, The above container carrier, Further comprising a twist lock zone visually visible to the naked eye on at least one of the plurality of upper cell guides and the plurality of top bridges; A container unloading method further comprising the step of twist-locking other containers overlapping the twist-lock zone in the horizontal direction.

3. In paragraph 2, The steps for fastening the above twist lock are: Including a step of fastening some containers among the other containers arranged at relatively high levels to each other with the twist lock, The above twist lock zone is, A container unloading method, wherein the container is overlapped with some of the containers arranged at a relatively high level based on the horizontal direction.

4. In paragraph 2, The steps for fastening the above twist lock are: Comprising the step of fastening all of the above other containers to each other with the twist locks, The above twist lock zone is, A method of unloading a container, wherein the container overlaps with other containers based on the horizontal direction.

5. In paragraph 2, A step of releasing said twist lock from said other containers on board; and A method for unloading containers, further comprising the step of unloading some of the above containers.

6. In paragraph 5, The step of releasing said twist lock from said other containers on board is: A step of releasing the twist lock fastened to the upper surface of the lower container among the upper and lower containers fastened with the twist lock among the other containers of the above, The steps for unloading some of the above containers are: A step of transporting the upper container to land with the above twist lock fastened to the lower surface; and A container unloading method, comprising the step of releasing the twist lock fastened to the lower surface of the upper container on land.

7. In paragraph 1, A step of twist-locking one container loaded on one of the container loading auxiliary devices and one of the other containers among the containers loaded on one of the container loading auxiliary devices on board; and A container unloading method further comprising the step of unloading one of the container loading assistance devices and one of the containers together while being connected to each other.

8. In paragraph 1, The above container carrier, It further includes a fixing member comprising at least one of a lashing eye, a lashing ring, a lashing plate, a plug, and a cone arranged at the uppermost portions of the plurality of tower bridges. A container unloading method, further comprising the step of connecting the uppermost portions of the plurality of top bridges to each other with the fixing member, after the step of loading the other containers on top of the one container loading auxiliary device.

9. A method for unloading multiple containers from a container carrier, The above container carrier, Hull including side plates, bottom plates, and upper deck; A plurality of cargo holds partitioned in the longitudinal direction of the hull by a plurality of transverse bulkheads inside the hull; A plurality of lower cell guides installed in front and behind each of the plurality of transverse bulkheads based on the longitudinal direction, but arranged in parallel along the width direction of the hull intersecting the longitudinal direction; A plurality of tower bridges extending upward from the plurality of transverse bulkheads, extending to the left and right edges of the upper deck in the width direction, and arranged in a plurality of rows along the length direction; A plurality of upper cell guides installed in front and behind each of the plurality of top bridges based on the longitudinal direction, and connected to the plurality of lower cell guides to provide a continuous guide path for the container; and A plurality of container loading auxiliary devices are introduced into the guide path while being guided by the plurality of upper cell guides, and are applied to at least one of the plurality of cargo holds so that at least one of the plurality of containers is loaded above. A step of loading some of the plurality of containers into one of the plurality of cargo holds; A step of loading one of the plurality of containers onto one of the plurality of container loading auxiliary devices arranged on land; A step of fastening one of the container loading auxiliary devices and one of the containers on land with a twist lock; A step of introducing one of the container loading auxiliary devices and one of the containers into the guide path while being connected to each other and placing them on one of the cargo holds; and A method for unloading containers, comprising the step of loading another part of said plurality of containers on top of one of said containers.

10. In paragraph 9, The above container carrier, Further comprising a twist lock zone visually visible to the naked eye on at least one of the plurality of upper cell guides and the plurality of top bridges; A container unloading method further comprising the step of twist-locking other containers overlapping the twist-lock zone in the horizontal direction.

11. In clause 10, If any one of the containers overlaps the twist lock zone based on the horizontal direction, A container unloading method further comprising the step of fastening one of the above containers and another container positioned above one of the above containers with a twist lock.

12. In paragraph 11, The steps for fastening the above twist lock are: Comprising the step of fastening all of the above other containers to each other with the twist locks, The above twist lock zone is, A method of unloading a container, wherein the container overlaps with other containers based on the horizontal direction.

13. In paragraph 10, A step of releasing said twist lock from said other containers on board; and A method for unloading containers, further comprising the step of unloading some of the above containers.

14. In paragraph 13, A container unloading method further comprising the step of unloading one of the container loading assistance devices and one of the containers together while being connected to each other.

15. In paragraph 13, A step of releasing said twist lock from said one container loading aid device and said one container on board; and A container unloading method further comprising the step of sequentially unloading one of the containers and the container loading assistance device.

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