JP2013177176A - Forty foot container conforming to iso standard - Google Patents

Abstract

PROBLEM TO BE SOLVED: To satisfy strength conditions specified in ISO standards while excellently maintaining workability when carrying in and out cargo.SOLUTION: In a container 1 having a cargo chamber 2 for loading cargo, and an opening 30 attached with a door to freely open and close; the opening 30 is provided on a side face of one side in a longitudinal direction of the cargo chamber 2; a length in a longitudinal direction of the opening 30 is a length 80-100%, preferably, 90-95%, of a length in the longitudinal direction of the cargo chamber 2; a partition plate 7 in which a length of at least a bottom edge is the same or less than two thirds of a length in a lateral direction of the cargo chamber 2 is provided in a center part in the longitudinal direction of the cargo chamber 2; partition plate holding members 8-1, 8-2, 8-3 holding partition plates 7 and to be reinforcement members of the cargo chamber 2 are disposed between an inner wall and an edge facing an inner wall of the cargo chamber 2 of edges of the partition plates 7; and floor face reinforcement members 9-1, 9-2 to be reinforcement members of a floor face are disposed in a rear face of the floor face of the cargo chamber 2.

Description

  The present invention relates to a 40-foot container conforming to the ISO (International Organization for Standardization) standard.

  A container that complies with the ISO standard satisfies a predetermined external dimension, a predetermined total gross weight, a predetermined strength condition, and the like defined by the ISO standard. This enables efficient container transportation, such as the ability to stack a number of containers of the same shape during sea or land transportation, and also provides cargo maintenance and cargo transportation by having a predetermined strength. The safety of the ship or vehicle is ensured.

  On the other hand, apart from containers conforming to the ISO standard, as seen in Patent Document 1, for example, there is a case in which workability at the time of loading and unloading cargo is emphasized and a door is provided on a side surface when viewed from the longitudinal direction of the container. . According to this, when it is desired to carry in / out a predetermined cargo, it is possible to open the door nearest to the cargo and carry in / out only the cargo or a small number of cargo around the cargo.

EP1136291A1

  In a container compliant with the ISO standard, a door used for loading and unloading cargo is located at the rear as viewed from the longitudinal direction. In this case, it is difficult to carry out only the cargo in the innermost part (frontmost part) of the container conforming to the ISO standard, and if almost all the cargo in front of the cargo in the innermost part is not carried out, Unable to carry out desired cargo. Also, if you have forgotten to load the cargo that should originally be loaded in the innermost part (frontmost part), it is difficult to load it in the innermost part if other cargo has already been loaded. It is. However, since the container conforming to the ISO standard is configured by the panel member of the wall surface except for the rear door, the predetermined strength condition defined by the ISO standard can be easily satisfied.

  On the other hand, the container of Patent Document 1 has high workability when loading and unloading cargo, but has a large opening for attaching a door, and has a lower strength than a container defined by the ISO standard. You may not be able to meet.

  Thus, good workability and strength at the time of loading and unloading cargo in the container are in a trade-off relationship.

  The present invention has been made under such a background, and conforms to the ISO standard that can satisfy the strength conditions defined in the ISO standard while maintaining good workability when loading and unloading cargo. The aim is to provide a compliant 40 foot container.

  The 40-foot container conforming to the ISO standard of the present invention is a 40-foot container conforming to the ISO standard having a cargo compartment in which cargo is loaded and an opening to which a door can be freely opened and closed. The longitudinal length of the opening is 80% to 100% of the longitudinal length of the cargo compartment, more preferably 90% to 95%. A partition plate having at least a bottom edge length equal to or less than two-thirds of the length in the short direction of the cargo chamber is provided at the center of the cargo chamber in the longitudinal direction. A partition plate holding member that holds the partition plate and serves as a reinforcing member for the cargo chamber is disposed between the edge facing the inner wall of the cargo chamber and the inner wall. Floor reinforcement members that serve as surface reinforcement members are arranged. .

  For example, in the floor surface reinforcing member, at least two beam-shaped members are located on the side having the opening portion from the frame on the side having no opening portion between at least two frames in the longitudinal direction supporting the floor surface. It is passed diagonally and radially toward the frame.

  At this time, one end of the at least two floor surface reinforcing members is installed at a distance of L1 from the center position in the longitudinal direction of the frame on the side having no opening, and at least two floor surfaces The other end of the reinforcing member is installed at a distance L2 from the opening ends on both sides in the longitudinal direction of the opening to the inside of the opening, and when the total length in the longitudinal direction of the container is L, the distance L1 is The distance L2 is 0L or more and 0.123L or less, more preferably 0L or more and 0.0858L or less, and the distance L2 is preferably 0L or more and 0.086L or less.

  In addition, a columnar member to which hinges that support the door are attached to the opening ends on both sides in the longitudinal direction of the opening portion are inserted between the frame that supports the ceiling and the frame that supports the floor in the longitudinal direction of the cargo compartment. Is preferably provided.

  According to the present invention, a 40-foot container conforming to the ISO standard (hereinafter simply referred to as a container) that can satisfy the strength conditions defined in the ISO standard while maintaining good workability when loading and unloading cargo. Can be provided).

It is a figure which shows the container of embodiment of this invention, and the vehicle which conveys this. It is the figure which looked at the container of FIG. 1 from the side. It is the figure which looked at the container of FIG. 2 from the upper surface, and is a figure which abbreviate | omitted illustrations, such as a ceiling panel and a corner metal fitting. It is a figure for demonstrating the role of the columnar member which attaches a hinge. It is a figure which shows the opening part which removed the door of the container. It is a perspective view of the container of the state which removed the door. It is the perspective view which looked at the container of the state which removed the door from the back surface. It is a figure which shows the state which opened the door of the container of FIG. It is a figure which shows the state with which the cargo (pallet) was loaded in the container of FIG. It is a figure which shows the mode of carrying in / out of the cargo (pallet) of the container of FIG. It is a figure which shows the state of a displacement of the lower side frame at the time of applying a loading weight to a container. It is a figure which shows the space | interval of two containers in the loading form in which two containers are stacked in the vertical direction. It is a figure which shows the arrangement position of a floor surface reinforcement member, and is a figure which shows the state which changes the attachment position of the floor surface reinforcement member of the side without an opening part variously. It is the conceptual diagram which looked at the state of FIG. 13 from the upper surface. It is a figure which shows the amount of displacement of a floor surface at the time of changing the attachment position of the floor surface reinforcement member by the side without an opening part variously as shown in FIG. It is a figure which shows the arrangement position of a floor surface reinforcement member, and is a figure which shows the state which changes the attachment position of the floor surface reinforcement member by the side which has an opening part variously. It is the conceptual diagram which looked at the state of FIG. 16 from the upper surface. It is a figure which shows the displacement amount of a floor surface at the time of changing the attachment position of the floor surface reinforcement member of the side which has an opening part as shown in FIG. 16, FIG. It is a figure which shows an example of the arrangement position of a floor surface reinforcement member. It is a figure which shows the state in which cargo (pallet) is loaded into the container which has a door in the rear part as a comparative example.

(Container 1 configuration)
The configuration of the container 1 will be described with reference to FIGS. 1, 2, and 3. FIG. 1 is a diagram showing a container 1 and a vehicle V that carries the container 1. FIG. 2 is a side view of the container 1. FIG. 3 is a view of the container 1 as seen from above. In FIG. 3, the ceiling panel, the ceiling frame (F5 to F8), and the corner metal fitting 5 are not shown for easy understanding of the state of the door 3.

  The container 1 which concerns on embodiment of this invention is mounted and conveyed by the vehicle V or the ship not shown, for example as shown in FIG. Here, a 40 ft (feet) container conforming to the so-called ISO standard will be described. The 40 ft container conforming to the ISO standard has an external dimension of 9 ft 6 in (inch) (2896 mm (millimeters)) × width 8 ft (2438 mm) × length 40 ft (12192 mm) and a maximum total mass of 30480 kg (kg). . The corner bracket 5 is used for connecting the frames constituting the container 1 to each other by welding. When the plurality of containers 1 are stacked in the vertical direction, the corner bracket 5 is used for connecting the containers. It also plays a role as a department. Therefore, the corner bracket 5 protrudes slightly from the full length, full width, and full height of the cargo compartment 2. Therefore, the total length of the container 1 for calculating the aperture ratio described later does not need to include the protruding portion of the corner metal fitting 5. Therefore, in the following, when calculating the aperture ratio, 12000 mm is adopted as the total length (L to be described later) of the container 1.

  The container 1 has a rectangular parallelepiped cargo compartment 2 as shown in FIGS. 1 to 3, and a door 3 on one side wall surface in the longitudinal direction. The door 3 includes small doors 3R-1, 3R-2, 3L-1, 3L-2. The small doors 3R-2 and 3L-2 are attached to the columnar members F30 and F40 of the container 1 by a hinge 4 so as to be freely opened and closed. Further, the small door 3R-1 and the small door 3R-2, and the small door 3L-1 and the small door 3L-2 are rotatably connected by a hinge 4, respectively. Further, corner metal fittings 5 are disposed at the corners of the cargo compartment 2.

  Further, as shown in FIG. 3, a partition plate 7 is provided near the center of the cargo compartment 2. Among the four edges, the partition plate 7 has three partition plate holding members 8-1, 8-2 having three edges on the ceiling side of the cargo compartment 2, the inner wall side without the door 3, and the floor surface side. 8-3. The three partition plate holding members 8-1, 8-2 and 8-3 are made of the same material as the members constituting the frame, and firmly connect the ceiling and floor surface of the container 1 as a reinforcing member. Also plays a role. Further, as shown in FIG. 3, the partition plate 7 has a length equal to or less than two-thirds of the length of the container 1 in the short direction, and does not completely separate the cargo compartment 2. Further, in FIG. 3, frames F1 to F4 at the four corners appear. The side wall 6R is attached by welding between the frame F3 and the columnar member F30, and the side wall 6F is attached by welding between the frame F4 and the columnar member F40.

  Here, as shown in the lower part of FIG. 4, the position where the hinge 4 is attached is not the frames F3 and F4 but the columnar members F30 and F40 as shown in the upper part of FIG. The position at which the displacement (deflection) of the frame F12 that supports the floor of 1 starts is shifted not to the positions of the frames F3 and F4 but to the positions of the columnar members F30 and F40 on the inner side. In other words, the frame F12 is in a straight state between the frames F3, F4 and the columnar members F30, F40 with almost no displacement (deflection), and the inner portion is displaced from the position of the columnar members F30, F40. Thus, the displacement amount (deflection amount) of the frame F12 can be significantly suppressed by setting the position where the displacement occurs in the frame F12 to the position of the columnar members F30 and F40 further inside than the frames F3 and F4. That is, the displacement amount (deflection amount) of the frame F12 can be significantly suppressed by the synergistic effect of the frames F3 and F4 and the columnar members F30 and F40. For convenience of explanation, the columnar members F30 and F40 are named differently from the other frames such as the frames F3 and F4, but are substantially made of the same material as the other frames such as the frames F3 and F4. It is a member. The frames F1 to F12 and the columnar members F30 and F40 are constituted by, for example, hollow iron prismatic pipes.

(About the opening 30 of the container 1)
The lower part of FIG. 5 shows the opening 30 from which the door 3 of the container 1 shown in the upper part of FIG. 5 is removed. FIG. 6 is a perspective view of the container 1 with the door 3 removed. Thus, the door 3 is attached to the opening 30. As shown in FIG. 5, the ratio [(La / L) × 100] (%) of the length La of the opening 30 that appears when the door 3 is opened to the total length L of the container 1 is referred to as the opening ratio. . Further, columnar members F30 and F40, side walls 6F and 6R, and frames F3 and F4 are disposed on both sides of the opening 30 in the longitudinal direction. For example, the areas of the side walls 6F and 6R are equal on the left and right.

  Moreover, the container 1 has the floor surface reinforcement members 9-1 and 9-2 in the back surface of a floor surface, as shown in FIG. For example, the floor reinforcing members 9-1 and 9-2 include two beams from one frame F10 in the longitudinal direction constituting the floor surface on the side without the opening 30 toward the frame F12 on the side having the opening 30. The shaped member is passed radially and obliquely. The floor surface reinforcing members 9-1 and 9-2 are members made of the same material as the frames F1 to F12 and the columnar members F30 and F40, and are made of, for example, hollow iron square column pipes.

(About opening and closing the door 3 of the container 1)
The opening / closing mechanism of the door 3 of the container 1 will be described with reference to FIG. FIG. 8 is a diagram illustrating a state in which the door of the container 1 is opened. As shown in FIG. 8, the door 3 of the container 1 is opened and closed by a hinge 4, and the small doors 3 </ b> R- 1, 3 </ b> R- 2, 3 </ b> L- 1 and 3 </ b> L- 2 are folded by the hinge 4. In FIG. 8, the small door 3L-2 is not opened.

(About loading and unloading of cargo in container 1)
Carrying in / out of cargo in the container 1 will be described with reference to FIGS. 9 and 10. FIG. 9 is a diagram illustrating a state in which cargo (pallet 10) is loaded on the container 1. FIG. 10 is a diagram illustrating a state in which the cargo (pallet 10) in the container 1 is carried in and out.

  As shown in FIG. 9, the container 1 can be loaded with cargo such as a pallet 10. The pallet 10 is assumed to be a flat pallet for consistent transportation conforming to JIS Z0105 standard, and the dimensions are 1100 mm long × 1100 mm wide × 144 mm high. As a result, 20 pallets 10 in a maximum of 10 × 2 rows can be loaded in the container 1.

  Loading and unloading of the pallet 10 and the like into the container 1 can be performed from the side door 3. As shown in FIG. 10, the pallet 10 loaded in the container 1 has small doors 3R-1, 3R-2, 3L-1, 3L-2 (in FIG. 10, the closed state is illustrated). By opening, it becomes possible to carry in / out from the side of the container 1. Obviously, the larger the aperture ratio shown in FIG. 5, the easier and more convenient the loading and unloading of the pallet 10 is.

(About strength evaluation of container 1)
The evaluation of the strength of the container 1 will be described with reference to FIG. FIG. 11 shows the corner metal fitting 5 when the loaded weight is applied to the container 1, the upper frames F6 and F8, the lower frames F10 and F12, the rear frames F2 and F3, the columnar member F30, and the front frame F1, It is a figure which shows the state of the displacement of F4 and the columnar member F40. As a comparison object, a 40-foot container (hereinafter referred to as a conventional container) that does not have a door on the side and has a door only at the rear and conforms to a conventionally well-known ISO standard (hereinafter referred to as a conventional container) is used. The strength of the container 1 was evaluated by comparing with the strength of the container 1. That is, evaluation was performed by applying the same force to the container 1 and the conventional container and measuring the difference in displacement. Note that each frame of the conventional container will be described using the same reference numerals as the container 1 for convenience.

  The strength is evaluated by the displacement of the frames F10 and F12 that support the floor of the container 1 and the conventional container, the displacement of the frames F6 and F8 that support the ceiling of the container 1 and the conventional container, the displacement of the corner bracket 5, and the door 3 (this Does not have a conventional container), and the displacement of the rear frames F2, F3 is evaluated. Note that the front frames F1 and F4 and the rear frames F2 and F3 of the container 1 have substantially the same amount of displacement, so attention is paid to the rear frames F2 and F3. Further, since the conventional container has a door on the side of the rear frames F2 and F3 and has an opening for the door, the amount of displacement of the front frames F1 and F4 is always the rear frame F2, F2. Below the displacement of F3. For this reason, the front frames F1 and F4 are excluded from the objects of strength evaluation.

  Regarding the displacement of the lower frames F10 and F12, heavy objects were loaded on the container 1 and the conventional container, and the displacement was measured. Regarding the displacement of the corner metal fitting 5 and the upper frames F6 and F8, container-shaped heavy objects were stacked on top of the container 1 and the conventional container, and the displacement was measured. Further, regarding the displacement of the corner fitting 5 and the rear frames F2 and F3, a force was applied from the longitudinal direction and the short direction perpendicular to the longitudinal direction, and the displacement was measured.

  According to the strength evaluation of the container 1 performed in this way, the stress due to the force from the short direction of the corner bracket 5 and the rear frames F2 and F3 is concentrated on the upper corner of the rear frame, but the cargo The partition plate holding members 8-1, 8-2, and 8-3 that are located at the approximate center of the chamber 2 can achieve a displacement equivalent to that of the conventional container. Further, the displacement due to the force from the longitudinal direction of the corner bracket 5 and the rear frames F2 and F3 was the same as the displacement amount of the conventional container. Further, the displacement of the upper frames F6 and F8 was the same displacement amount as that of the conventional container.

  Further, it has been found that the displacement amount of the frames F10 and F12 below the container 1 changes depending on the size of the opening 30 that the conventional container does not have. At this time, it was also found that the amount of displacement of the lower frames F10 and F12 exceeded the amount of change defined in the ISO standard at a predetermined aperture ratio. That is, between the upper frames F6 and F8 and the lower frames F10 and F12, the frames F3 and F4, the columnar members F30 and F40, the side walls 6F and 6R, and the partition plate holding members 8-1 and 8 are connected. Each member of −2, 8-3 is interposed. Therefore, the frame F3, F4, the columnar members F30, F40, the side walls 6F, 6R, and the partition plate holding members 8-1, 8-2, 8-3 can partially transfer the load applied to the lower frames F10, F12. The frames F6 and F8 can be borne. At this time, since the shapes of the constituent members of the frames F3, F4, the columnar members F30, F40, the side walls 6F, 6R, and the partition plate holding members 8-1, 8-2, 8-3 are constant, the size of the opening 30 is large. Thus, it was found that the amount of displacement of the lower frames F10 and F12 also changes. At this time, in the container 1, the floor surface reinforcing members 9-1 and 9-2 are arranged on the floor surface based on the idea that the opening ratio of the opening 30 is as large as possible and importance is attached to the improvement of workability of cargo handling. It was decided. Specifically, in the container 1, the total length L in the longitudinal direction is 12000 mm, whereas the total length La in the longitudinal direction of the opening 30 is 11500 mm. According to this, the aperture ratio is about 95%.

  Since the container 1 has the opening 30 on the lower frame F12 side and does not have the opening 30 on the lower frame F10 side, the displacement amount of the frame F12 is larger than the displacement amount of the frame F10. Will always grow. Therefore, in the following description, the lower frame F12 will be described for convenience of description.

(About the allowable range of displacement of the lower frame F12)
The allowable range of the amount of displacement of the lower frame F12 will be described with reference to FIG. FIG. 12 is a diagram illustrating an interval between two containers 1-1 and 1-2 in a stacking form in which the two containers 1-1 and 1-2 are stacked in the vertical direction.

  The loading form as shown in FIG. 12 is a loading form generally adopted when the container 1 is transported by sea. The containers 1-1 and 1-2 are shown in FIG. 12 even if the corner fittings 5-1 and 5-2 are connected by a fixing device called a twist lock so that the container 1-1 may be shaken during transportation. The loading form can be kept. At this time, the distance between the container 1-1 and the container 1-2 is about 12.5 mm. Here, according to the provisions of the ISO standard, the container 1-1 should not interfere with other containers 1-2 even if it is the maximum load capacity. Therefore, the amount of displacement allowed for the lower frame F12 must be less than 12.5 mm.

  However, the displacement amount of the above-mentioned 12.5 mm frame F12 is an allowable maximum value, and at the time of designing the container 1, the strength variation due to the variation of the material of the component member, the secular change of the strength of the component member, In consideration of factors such as changes in displacement due to vibrations and impacts that occur during transportation of the container 1, it is necessary to obtain a strength that does not exceed a displacement smaller than 12.5 mm. Therefore, in the container 1, the displacement amount of the frame F12 is considered to be “2”, and is allowed to be 6 mm, which is about half of 12.5 mm.

(Regarding the relationship between the arrangement positions of the floor reinforcing members 9-1 and 9-2 and the displacement amount of the frame F12)
As shown in FIGS. 13 and 14, the floor surface reinforcing members 9-1 and 9-2 are arranged on the floor surface of the container 1 from the frame F <b> 10 on the side without the opening 30 to the frame on the side having the opening 30. It is arranged radially (C-shaped) toward F12. In the following description, in the floor reinforcing members 9-1 and 9-2 that are radially arranged, the gradually expanding direction is referred to as “radial direction”, and the gradually narrowing direction is referred to as “convergence direction”. In FIGS. 13 and 14, the radial directions of the floor reinforcing members 9-1 and 9-2 are fixed to the side of the corner bracket 5 at fixing points fp1 and fp2, respectively, and the floor reinforcing members 9-1 and 9- 2 shows a state in which the two convergence directions are separated from each other by a distance L1 from the position of the partition plate holding member 8-3. 16 and 17, the convergence direction of the floor surface reinforcing members 9-1 and 9-2 is fixed at both sides of the partition plate holding member 8-3 at fixing points fp3, and the floor surface reinforcing member 9- The state in which the radial directions 1 and 9-2 are installed at positions separated by L2 from the opening ends on both sides in the longitudinal direction of the opening 30 inside the opening 30 is illustrated.

  First, as shown in FIGS. 13 and 14, the frame of the container 1 when the convergence directions of the floor surface reinforcing members 9-1 and 9-2 are separated from each other by a distance L1 from the position of the partition plate holding member 8-3. The displacement amount (deflection) of F12 is shown in FIG. FIG. 15 shows the displacement amount of the frame F12 when the distance L1 is changed to P1: 0 mm (millimeter), P2: 1029 mm, P3: 1542 mm, P4: 1992 mm, P5: 2507 mm, P6: 3471 mm, P7: 4486 mm. ing. In addition, this numerical value is P1: 0L, P2: 0.0858L, P3: 0.129L, P4: 0.166L, P5: 0.209L, P6: 0.289L when the total length L of the container 1 is 12000 mm. , P7: 0.374L. According to this replacement, even if the total length L is not exactly 12000 mm, the displacement data shown in FIG. 15 can be adopted by substituting the total length value into L.

  As shown in FIG. 15, the displacement amount when L1 = P1 is the minimum, and the displacement amount when L1 = P4 reaches −6 mm. Therefore, the maximum range of L1 is a range from L1 to P1 to P4. From another point of view, in FIG. 15, when the slope of the change from L1 = P1 to P2 is I1, and the slope of the change from L1 = P5 to P7 is I2, the slopes I1 and I2 Intersect at intersection C1. The position of the intersection C1 is located at an approximately middle point where the inclination I1 shifts to the inclination I2. The event that the gradient I1 shifts to the gradient I2 means an event in which the increase rate of the displacement amount changes from a small value to a large value. Therefore, by setting the value of L1 corresponding to the intersection C1 as the maximum value of L1, the maximum value of L1 can be set before the increase rate of the displacement amount increases rapidly. In the example of FIG. 15, the displacement amount has just reached −6 mm at the position of the intersection C1. Moreover, as a practical range of the distance L1, it is preferable to consider, for example, a range of P1 to P2 in consideration of the safety factor within the maximum range of the distance L1.

  Next, as shown in FIGS. 16 and 17, the radial directions of the floor reinforcing members 9-1 and 9-2 are respectively distanced L2 from the opening ends on both sides in the longitudinal direction of the opening 30 to the inside of the opening 30. FIG. 18 shows the amount of displacement (deflection) of the frame F12 of the container 1 when separated. In FIG. 18, the distance L2 is P11: 0 mm, P12: 486 mm, P13: 1033 mm, P14: 1330 mm, P15: 1480 mm, P16: 1994 mm, P17: 2573 mm, P18: 3023 mm, P19: 3537 mm, P20: 3987 mm, P21: 4500 mm The amount of displacement of the frame F12 when transitioned is shown. In addition, this numerical value is P11: 0L, P12: 0.0405L, P13: 0.086L, P14: 0.111L, P15: 0.123L, P16: 0.166L when the total length L of the container 1 is 12000 mm. , P17: 0.214L, P18: 0.252L, P19: 0.295L, P20: 0.332L, P21: 0.375L. According to this replacement, even if the total length L is not exactly 12000 mm, the displacement data shown in FIG. 18 can be employed by substituting the total length value into L.

  As shown in FIG. 18, the amount of displacement when L2 = P11 is the minimum, and the amount of displacement when L2 = P15 reaches −6 mm. Therefore, the maximum range of L2 is a range of L2 from P11 to P15. From another viewpoint, in FIG. 18, when the slope of the change from L2 = P11 to P12 is I3 and the slope of the change from L1 = P16 to P21 is I4, the slopes I3 and I4 are Intersect at intersection C2. The position of the intersection point C2 is located at a substantially middle point where the inclination I3 shifts to the inclination I4. The event that the gradient I3 shifts to the gradient I4 means an event in which the increase rate of the displacement amount changes from a small value to a large value. Therefore, by setting the value of L2 corresponding to the intersection C2 as the maximum value of L2, the maximum value of L2 can be set before the increase rate of the displacement amount increases rapidly. In the example of FIG. 18, the displacement amount has just reached −6 mm at the position of the intersection C2. In addition, the practical range of the distance L2 is preferably set to a range of P11 to P13, for example, in consideration of the safety factor within the maximum range of the distance L2.

  Moreover, as shown in FIG. 19, it can also arrange | position so that both the radial direction and the convergence direction of the floor surface reinforcement members 9-1 and 9-2 may be spaced apart from each other by the distances L1 and L2. For example, in the example of FIG. 19, the distance L1 is the maximum value P4 shown in FIG. 15, and the distance L2 is the maximum value P15 shown in FIG. As a result of measuring the displacement amount of the frame F12 when the floor surface reinforcing members 9-1 and 9-2 are arranged in this manner, a measurement result that the displacement amount is less than −6 mm was obtained.

  From the above, the distance L1 may be P1 to P4, and the distance L2 may be P11 to P15. More preferably, the distance L1 is P1 to P2, and the distance L2 is P11 to P13. In other words, the distance L1 is 0L or more and 0.166L or less, the distance L2 is 0L or more and 0.123L or less, and more preferably, the distance L1 is 0L or more and 0.0858L or less, and the distance L2 is 0L or more and 0.086L or less. It is preferable that

  Moreover, although the arrangement position which exhibits the maximum strength as the arrangement position of the floor reinforcement members 9-1 and 9-2 is the distance L1 = P1 (0 mm) and the distance L2 = P11 (0 mm), This arrangement position is an arrangement position where the entire lengths of the floor surface reinforcing members 9-1 and 9-2 are longest. On the contrary, the arrangement position that exhibits the minimum allowable strength as the arrangement position of the floor surface reinforcing members 9-1 and 9-2 is the distance L1 = P2 and the distance L2 = P15. At this time, the overall lengths of the floor reinforcing members 9-1 and 9-2 are the shortest. That is, from the viewpoint of reducing the weight of the container 1, it is preferable that the total length of the floor surface reinforcing members 9-1 and 9-2 is short. Therefore, whether the floor surface reinforcing members 9-1 and 9-2 are disposed at positions where the minimum allowable strength is exhibited, or the floor surface reinforcing members 9-1 and 9-2 are disposed at positions where the maximum strength is exhibited, Alternatively, whether or not the floor surface reinforcing members 9-1 and 9-2 are arranged to exhibit moderate strength may be appropriately determined according to the usage form of the container 1 (for example, the weight of the loaded cargo).

(About effect)
As described above, the container 1 has the cargo compartment 2 in which cargo is loaded and the opening 30 to which the door 3 can be freely opened and closed. The opening 30 is provided on one side in the longitudinal direction of the cargo compartment 2. The length in the longitudinal direction of the opening 30 provided on the side is 80% to 100% of the length of the cargo chamber 2 in the longitudinal direction, more preferably 90% to 95%. A partition plate 7 having at least a bottom edge length equal to or less than two-thirds of the length in the short direction of the cargo chamber 2 is provided at the center of the cargo chamber 2 in the longitudinal direction. A partition plate holding member 7 that holds the partition plate 7 and serves as a reinforcing member for the cargo chamber 2 is disposed between the edge facing the inner wall of the cargo chamber 2 and the inner wall. On the back surface, floor surface reinforcing members 9-1 and 9-2 that serve as floor surface reinforcing members are arranged. It can provide a container 1 which can satisfy the strength requirements defined in the ISO standard, while maintaining good workability.

  The floor surface reinforcing members 9-1 and 9-2 have a frame F10 in which at least two beam-shaped members are on the side not having the opening 30 between at least two frames in the longitudinal direction that support the floor surface. To the frame F12 on the side having the opening 30 and are obliquely distributed radially. At this time, one end of each of the floor surface reinforcing members 9-1 and 9-2 is installed at a position separated from the center position in the longitudinal direction of the frame F10 on the side not having the opening 30 by a distance L1. The other ends of the surface reinforcing members 9-1 and 9-2 are installed at positions separated by L2 from the opening ends on both sides in the longitudinal direction of the opening 30 inside the opening 30, respectively. When the total length is L, the distance L1 is 0L or more and 0.166L or less, the distance L2 is 0L or more and 0.123L or less, and more preferably, the distance L1 is 0L or more and 0.0858L or less, and the distance L2 is 0L. Since it is above 0.086L, the arrangement | positioning aspect of the floor surface reinforcement members 9-1 and 9-2 can be changed variously. For example, when priority is given to the strength of the floor surface, the total length of the floor surface reinforcing members 9-1 and 9-2 may be maximized and the distances L1 and L2 may be set to 0L, respectively. On the other hand, when priority is given to weight reduction of the container 1, the total length of the floor reinforcing members 9-1 and 9-2 may be minimized to set the distance L1 to 0.166L and the distance L2 to 0.123L.

  Further, at the opening ends on both sides in the longitudinal direction of the opening 30, a hinge is supported between the frame F 8 that supports the ceiling in the longitudinal direction of the cargo compartment 2 and the frame F 12 that supports the floor and supports the door 3. Since the columnar members F30 and F40 to which 4 is attached are provided, the displacement amount (deflection amount) of the frame F12 can be suppressed to be small due to a synergistic effect with the frames F3 and F4. Thereby, the container 1 can be comprised, without increasing the intensity | strength of each member including the flame | frame F12. Since it is not necessary to increase the strength of each member constituting the container 1 in this way, it is not necessary to increase the weight or size of each member. According to this, the container 1 can be reduced in weight, and the container 1 can be configured such that the cargo compartment 2 is widened.

  As for the handling workability, as a comparative example, FIG. 20 shows a container 101 that conforms to the ISO standard with the door 100 at the rear. In the container 101 that complies with the ISO standard, when carrying out the hatched pallet 10, it can only be carried out after all other pallets 10 have been carried out.

  On the other hand, according to the container 1 having the door 3 on the side surface, it is possible to easily carry out the cargo to be carried out. Moreover, since carrying in of the pallet 10 etc. to the container 1 can be loaded from the side door 3, arbitrary cargo can be easily loaded into arbitrary loading locations. Moreover, since the width of the opening 30 can be 90% to 95% of the total length in the longitudinal direction of the container 1 conforming to the ISO standard, the large door 3 can be provided on the side surface. In this way, by setting the aperture ratio to 90% to 95%, it becomes possible to carry in / out only the desired pallet 10 and to maintain a sufficient strength in view of the ISO standard. .

  As a result, the same number of pallets 10 as containers 101 can be loaded, and a small amount of various types of parts can be loaded into a plurality of pallets 10 and loaded freely at predetermined positions. it can. For example, even when a part is forgotten to be loaded on the container 1, by opening the door 3 on a predetermined side surface, only that part can be added and loaded at a predetermined position of the container 1 later. This is the same even when cargo is dropped from the container 1, and even if a part is forgotten to be dropped from the container 1, the door 3 on the predetermined side surface is opened so that it can be moved from a predetermined position on the container 1 later. Only that part can be dropped. Moreover, since the door 3 is divided into small doors 3L-1, 3L-2, 3R-1, 3R-2 and can be folded, the space around the container 1 required to open the door 3 can be reduced. .

  Further, since the partition plate 7 is less than or equal to two-thirds of the short side direction of the cargo chamber 2, the partition plate 7 is not provided in one third of the short side direction of the cargo chamber 2. According to this, it becomes possible to load the goods close | similar to the full length of the longitudinal direction of the cargo chamber 2 in the part without the partition plate 7. FIG.

(Other embodiments)
Various modifications can be made to the embodiment of the present invention without departing from the gist thereof. For example, by changing the material itself of each frame and each wall surface of the container 1 to a stronger material, the above-described aperture ratio can be set to a larger value. For example, by using a material such as a titanium alloy, the aperture ratio can be set to a value larger than 95% (for example, 100%). Alternatively, the opening ratio is 95%, and any one or both of the floor surface reinforcing members 9-1 and 9-2 and the partition plate holding members 8-1, 8-2 and 8-3 can be omitted.

  Alternatively, the opening ratio of the container 1 is set to a value smaller than 95% (for example, 80%), and any of the floor surface reinforcing members 9-1 and 9-2 and the partition plate holding members 8-1, 8-2 and 8-3 Either one or both may be omitted.

  Further, with respect to the wall surfaces 6F and FR between the frames F3 and F4 and the columnar members F30 and F40, the frames F3 and F4 and the columnar members F30 and F40 are separated by increasing the thickness of the columnar members F30 and F40. It can be omitted if it is closely attached.

  In the above-described embodiment, the pallet 1 is exemplified as the loaded cargo of the container 1, but the loaded cargo may be any type. For example, the cargo may be directly loaded on the container 1 without using the pallet 1, or the cargo loaded on the pallet 1 and the cargo loaded without using the pallet 1 may be mixedly loaded. Alternatively, in the above-described embodiment, the usage form in the height direction of the container 1 is not described in detail, but if the height of the container 1 allows, cargo such as the pallet 1 is stacked in a plurality of stages and loaded. May be.

  DESCRIPTION OF SYMBOLS 1 ... Container, 2 ... Cargo compartment, 3 ... Door, small door ... 3R-1, 3R-2, 3L-1, 3L-2, 6F, 6R ... Side wall, 7 ... Partition plate, 8-1, 8-2 , 8-3 ... partition plate holding member, 9-1, 9-2 ... floor surface reinforcing member, 10 ... pallet (flat pallet for consistent transport of JIS Z0105), 30 ... opening, F1 to F12 ... frame, F30, F40 ... Columnar member

Claims (4)

In a 40-foot container conforming to the ISO standard having a cargo compartment in which cargo is loaded and an opening to which a door can be freely opened and closed,
The opening is provided on one side surface in the longitudinal direction of the cargo compartment,
The longitudinal length of the opening is 80% to 100% of the longitudinal length of the cargo compartment, more preferably 90% to 95%.
A partition plate having at least a bottom edge length equal to or less than two-thirds of a length of the cargo chamber in a short direction is provided at a central portion in a longitudinal direction of the cargo chamber,
A partition plate holding member that holds the partition plate and serves as a reinforcing member of the cargo chamber is disposed between the inner wall and the edge facing the inner wall of the cargo chamber among the edges of the partition plate,
A floor surface reinforcing member serving as a reinforcing member for the floor surface is disposed on the back surface of the floor surface of the cargo compartment.
A 40-foot container conforming to the ISO standard characterized by A 40 foot container complying with the ISO standard of claim 1,
The floor surface reinforcing member is configured such that at least two beam-shaped members between the at least two frames in the longitudinal direction supporting the floor surface have the openings from the frame on the side not having the openings. Passed diagonally radially toward the frame on the side having
A 40-foot container conforming to the ISO standard characterized by A 40 foot container complying with the ISO standard according to claim 2,
One end of each of the at least two floor surface reinforcing members is installed at a position separated by a distance L1 from the center position in the longitudinal direction of the frame on the side not having the opening,
The other ends of the at least two floor surface reinforcing members are installed at positions separated by distance L2 from the opening ends on both sides in the longitudinal direction of the opening to the inside of the opening, respectively.
When the total length in the longitudinal direction of the container is L, the distance L1 is 0L to 0.166L, the distance L2 is 0L to 0.123L, and more preferably, the distance L1 is 0L to 0.0858L. The distance L2 is 0L or more and 0.086L or less,
A 40-foot container conforming to the ISO standard characterized by A 40-foot container conforming to the ISO standard according to any one of claims 1 to 3,
A columnar shape is attached to the opening ends on both sides in the longitudinal direction of the opening portion, and hinges are attached between the frame supporting the ceiling and the frame supporting the floor in the longitudinal direction of the cargo compartment to support the door. Members are provided,
A 40-foot container conforming to the ISO standard characterized by

Images