Additional leg device attached to over-height attachment and over-height attachment

Abstract

To provide an additional leg device that is able to cope with a higher over-height load while using an over-height attachment having a predetermined leg- length.SOLUTION: An additional leg device 3 is attached to an attachment 2 having in each leg portion 21 a twist lock mechanism 22 which is engaged with a corner fitting 101 of a container 100. The additional leg device 3 includes: a mount portion 30 which is mounted by a locking operation in an engaging projection of the twist lock mechanism 22 positioned on a lower-end side of a leg portion 21; an additional leg portion 31 extending downward from the mount portion 30; and an additional twist lock mechanism 33 in which an additional engaging projection is positioned on a lower-end side of the additional leg portion 31 and which performs a locking operation with respect to the corner fitting 100 by the additional engaging projection in conjunction with the twist lock mechanism 22.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to an additional leg device that is attached to an overheight attachment, and to the overheight attachment. [Background technology]

[0002] Patent Document 1 discloses that when an overheight cargo that exceeds the upper end of a flat rack container or the like is transported, an overheight attachment is used to prevent the cargo from interfering with the mother spreader. Furthermore, Patent Document 1 discloses an invention related to a spreader that can suspend both general containers and special containers such as flat rack containers. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Application No. 55-88985 Summary of the Invention [Problem to be solved by the invention]

[0004] However, Patent Document 1 does not disclose the technical idea that enables the transportation of overheight cargo that exceeds the upper end of the flat rack container. Here, if the legs of the overheight attachment are simply made longer than ever before, there is a possibility that a problem will arise when transporting this overheight attachment to a port, such as the transport vehicle being unable to pass under a pedestrian bridge or through a tunnel.

[0005] In view of the above circumstances, an object of the present invention is to provide an additional leg device that can accommodate a higher overheight load while using an overheight attachment having a predetermined leg length, and to provide a new overheight attachment that can shorten the legs when transporting to avoid problems during transportation, but can lengthen the legs when in use. [Means for solving the problem]

[0006] In order to solve the above problems, the additional landing gear device of the present invention is an additional landing gear device attached to an overheight attachment, each of whose legs has a twist lock mechanism that engages with a corner fitting of a container, the additional landing gear device comprising: an attachment portion that is attached by a locking operation at an engaging protrusion of the twist lock mechanism located on the lower end side of the leg of the overheight attachment and that can be detached by an unlocking operation at the engaging protrusion; An additional leg portion extending downward from the mounting portion; an additional twist lock mechanism provided on the additional leg; Equipped with The additional twist lock mechanism is characterized in that an additional engaging protrusion located on the lower end side of the additional leg engages with the corner fitting and performs a locking operation on the corner fitting by the additional engaging protrusion in conjunction with the twist lock mechanism of the overheight attachment.

[0007] With the above configuration, by attaching an additional leg device to the overheight attachment, the leg of the overheight attachment is extended by the additional leg, making it possible to use an overheight attachment having a predetermined leg length while handling a higher overheight load. In other words, by connecting the additional leg to the leg, the additional twist lock mechanism of the additional leg device works in conjunction with the twist lock mechanism of the overheight attachment to perform a locking operation on the corner fitting by the additional engagement protrusion, thereby lifting the container. On the other hand, when the additional leg device is detached from the overheight attachment, the length of each leg of the overheight attachment can be made the same as before, so that when the overheight attachment is transported to a port, the transport vehicle can pass under a pedestrian bridge or through a tunnel without any problems as before.

[0008] The additional leg device may include two partial additional leg device bodies, each of which has the mounting portion, the additional leg, and the additional twist lock mechanism spaced apart at an interval corresponding to the width of the short side of the container, and may also include a support portion that integrally supports the two partial additional leg device bodies. According to this, by preparing two additional leg devices each having the two partial additional leg device bodies, the four legs of the overheight attachment can be extended. Also, each additional leg device has a planar shape, which has the advantage that it does not take up much space when transporting or storing the additional leg devices.

[0009] The additional leg device may include a coupling means mounting area in which coupling means is disposed for preventing the additional leg device from detaching from the overheight attachment during the unlocking operation of the twist lock mechanism of the overheight attachment. By mounting the coupling means to the coupling means mounting area, the additional leg device can be prevented from detaching from the overheight attachment even when the overheight attachment is brought into an unlocking operation state in order to detach a container from the additional leg device.

[0010] The connecting means may be an engaging member having an engaging hole that engages with a protruding portion protruding laterally from the leg of the overheight attachment, which allows the additional leg device to be hooked onto the protruding portion and stably held thereon.

[0011] The connecting means attached to the connecting means attachment region may be capable of attaching a plate-like member that does not pass through the engagement hole to the end of the protruding portion that passes through the engagement hole. In this way, the engagement member can be prevented from coming off the protruding portion by a simple operation of attaching the plate-like member to the end of the protruding portion.

[0012] The overheight attachment of the present invention is an overheight attachment having twist lock mechanisms on each leg that engage with corner fittings of a container, The leg and twist lock mechanism comprise a first part located on the mother spreader side and a second part on the side having an engaging protrusion that engages with the corner fitting, and the second part is detachable from the first part.

[0013] With the above configuration, when the overheight attachment is in a used state with the second part attached, it is possible to lift a container with an overheight cargo. On the other hand, when the second part is detached from the overheight attachment, the length of each leg of the overheight attachment becomes shorter, so that when the overheight attachment is transported to a port, the transport vehicle can pass under a footbridge or through a tunnel without any problem as before. Also, by preparing multiple types of the second part with different lengths, it is possible to handle cargo with different overheight amounts.

[0014] In the overheight attachment, the first and second parts may be fixed to each other by a bolt inserted laterally, and an opening through which the bolt passes may be formed in an outer plate of the leg, which makes it easy to connect the second part to the first part. Effect of the Invention

[0015] The additional leg device of the present invention can accommodate a higher overheight load while using an overheight attachment having a predetermined leg length. Also, the overheight attachment of the present invention has the effect of shortening the legs during transportation to avoid problems during transportation, and lengthening the legs when in use to accommodate an overheight load. [Brief description of the drawings]

[0016] [Figure 1] 1 is a schematic perspective view showing an additional leg device according to an embodiment of the present invention, an overheight attachment for suspending the additional leg device, and a mother spreader for suspending the overheight attachment. FIG. [Diagram 2] FIG. 1 is a schematic perspective view showing a state in which a container is lifted by an overheight attachment with the additional leg device removed. [Diagram 3] FIG. 2 is a schematic perspective view showing an overheight attachment. [Figure 4] FIG. 2 is a schematic perspective view showing a leg of an overheight attachment. [Diagram 5] 1A and 1B are schematic perspective views showing the lower part of the leg of an overheight attachment and an embodiment of an additional leg device attached to this lower part. [Figure 6] FIG. 2 is a schematic perspective view showing an additional leg device according to an embodiment. [Figure 7]FIG. 1A is a schematic perspective view showing the leg of an overheight attachment of an embodiment, and FIG. 1B and FIG. 1C are explanatory diagrams showing the connection between the first and second parts of the leg. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0017] <Additional leg device> An additional leg device according to an embodiment of the present invention will be described below with reference to the accompanying drawings. Fig. 1 shows a state in which an overheight attachment 2 is attached to a mother spreader 1, two additional leg devices 3 according to an embodiment are attached to the overheight attachment 2, and a container (such as a flat rack container or an open-top container) 100 is suspended by the two additional leg devices 3.

[0018] The overheight attachment 2 comprises a main body frame 20 having a rectangular shape corresponding to the rectangular shape of the container 100 in a plan view, and four prismatic legs 21 attached to the underside of the four corners of the main body frame 20. Each leg 21 is provided with a twist lock mechanism 22 that engages with and disengages from a corner fitting 101 of the container 100, and as shown in Figure 2, the overheight attachment 2 can be used to suspend the container 100 even in a usage mode in which the additional leg device 3 is not installed.

[0019] As shown in FIG. 3, an engagement long hole 211 having approximately the same shape as the engagement long hole of the corner fitting 101 is formed on the upper surface of each leg 21, and the mother-side engagement protrusion of the mother-side twist lock mechanism in the mother spreader 1 fits into this engagement long hole 211 so that this mother-side engagement protrusion can fit into the engagement recess located on the upper side of the twist lock mechanism 22.

[0020] 4, the engagement recess is located on the upper part of shaft portion 22a of twist lock mechanism 22, and shaft portion 22a is provided so as to be rotatable approximately 90 degrees around its axis. In addition, twist lock mechanism 22 has engagement protrusion 22c on the lower side of shaft portion 22a that can enter through the engagement long hole of corner fitting 101 and fit into corner fitting 101.

[0021] In this embodiment, the overheight attachment 2 is a type in which the shaft 22a, the engaging recesses and the engaging protrusions 22c of the twist lock mechanism 22 rotate by receiving a rotating force from the mother side engaging protrusions. That is, the overheight attachment 2 performs a locking operation / unlocking operation in conjunction with a locking operation / unlocking operation caused by the rotation of the mother side twist lock mechanism in the mother spreader 1. However, the overheight attachment 2 is not limited to this interlocking type, and may be a type in which the locking operation / unlocking operation is performed by rotating the shaft 22a of the twist lock mechanism 22 by a manual rotating operation.

[0022] The additional leg device 3 of this embodiment has two partial additional leg device bodies 3A spaced apart at an interval corresponding to the width of the short side of the container 100, and has a beam-shaped support portion 32 that integrates these two partial additional leg device bodies 3A.

[0023] Each partial additional leg device body 3A includes an attachment portion 30, an additional leg portion 31, and an additional twist lock mechanism 33.

[0024] As shown in Figs. 5(A) and 5(B), the mounting part 30 is attached and fixed to the lower end side of the leg part 21 by a locking operation at the engaging protrusion 22c located at the lower end side of the twist lock mechanism 22 in the leg part 21 of the overheight attachment 2. That is, an engagement long hole 30a having the same shape as the engagement long hole of the corner fitting 101 is formed in the upper end surface of the mounting part 30 as shown in Fig. 6, and the engagement protrusion 22c enters this engagement long hole 30a, and the shaft part 22a of the twist lock mechanism 22 is rotated 90 degrees, thereby attaching and fixing the mounting part 30 to the leg part 21. On the other hand, the mounting part 30 can be detached from the leg part 21 by an unlocking operation at the engagement protrusion 22c. In addition to a receiving area facing the lower end surface of the leg part 21, a connecting means attachment area 30b is provided at the upper end of the mounting part 30. The engagement long hole 30a is located in the receiving area.

[0025] An approximately square tubular additional leg 31 is provided below the mounting part 30. An additional twist lock mechanism 33 is provided in the mounting part 30 and the additional leg 31.

[0026] The additional twist lock mechanism 33 comprises an additional shaft portion 33a that is supported so as to be rotatable about its axis, an additional engagement recess 33b located on the upper side of the additional shaft portion 33a and into which the engagement protrusion 22c is fitted, and an additional engagement protrusion 33c located on the lower side of the additional shaft portion 33a and capable of engaging with an elongated engagement hole of the corner fitting 101. When the twist lock mechanism 22 is rotated 90 degrees with the engagement protrusion 22c of the twist lock mechanism 22 of the overheight attachment 2 fitting into the additional engagement recess 33b and the additional engagement protrusion 33c fitting into the elongated engagement hole of the corner fitting 101, the additional shaft portion 33a of the additional twist lock mechanism 33 is also rotated 90 degrees and a locking operation with respect to the corner fitting 101 is performed.

[0027] A rotation restriction mechanism 34 is provided within the additional leg 31. This rotation restriction mechanism 34 has a vertical shaft 34a that penetrates an upper plate portion 36 fixed within the additional leg 31 and a lower plate portion 37 that forms the lower end of the additional leg 31, and is supported by these plate portions 36, 37 so as to be movable up and down. When the lower plate portion 37 abuts against the corner fitting 101, the lower end of the vertical shaft 34a abuts against the corner fitting 101 and the vertical shaft 34a moves upward. A square portion 34b that serves as an engagement claw portion is provided at the upper end of the vertical shaft 34a, while an engagement portion 33d in which a first engagement notch portion 33d1 and a second engagement notch portion 33d2 are formed is fixed to the additional shaft portion 33a. When the vertical shaft 34a comes into contact with the corner fitting 101 and moves upward, the engagement between the angular portion 34b and the engagement portion 33d is released, and the additional shaft portion 33a is allowed to rotate. Meanwhile, a return spring 34c is fitted onto the vertical shaft 34a, and when the vertical shaft 34a leaves the corner fitting 101 and moves downward due to the bias of the return spring 34c, the angular portion 34b engages with the first engagement notch 33d1 of the engagement portion 33d. Here, the first engagement notch 33d1 and the second engagement notch 33d2 are spaced apart from each other at an angle of 90 degrees. As described above, when the additional shaft portion 33a is allowed to rotate, and the additional shaft portion 33a of the additional twist lock mechanism 33 rotates 90 degrees to perform a locking operation relative to the corner fitting 101, the second engagement notch 33d2 is located below the angular portion 34b. When the container 100 is lifted by the additional leg device 3, the vertical shaft 34a is lowered by the amount of the gap between the additional engagement protrusion 33c and the corner fitting 101, and the rectangular portion 34b fits into the second engagement cut-out portion 33d2, restricting the rotation of the additional twist lock mechanism 33.

[0028] In this embodiment, a rotation restricting mechanism having a similar configuration to the rotation restricting mechanism 34 is also provided in the leg 21 of the overheight attachment 2.

[0029] Furthermore, protrusions 21a that protrude laterally (in the facing direction) are provided on the opposing outer plate portions of the two legs 21 facing each other on the short sides of the container in the overheight attachment 2. Each protrusion 21a is, for example, a round steel bar cut to a predetermined length and welded onto a base plate, and the base plate is welded to the outer plate portion of the leg 21.

[0030] On the other hand, the connecting means attachment region 30b is located at a position that receives the protrusion 21a, and is a portion where the engaging member 35, which is the connecting means, is attached. A female screw portion is formed in the connecting means attachment region 30b, into which a bolt 35a for fixing the engaging member 35 is screwed. The engaging member 35 is composed of a base portion 351 that is fixed by screwing the bolt 35a into the female screw portion, and a hook portion 352 that is welded and fixed onto the base portion 351. The hook portion 352 has a horizontal hole 352a through which the protrusion 21a is inserted. The horizontal hole 352a is an elongated hole shape that is long in the vertical direction, and this elongated hole shape allows temporary vertical positional fluctuation of the engaging member 35 with respect to the protrusion 21a.

[0031] With the additional leg device 3 attached to the overheight attachment 2, the protrusion 21a is passed through the horizontal hole 352a (engagement hole) of the hook portion 35b, and the base portion 351 is fixed to the female screw portion of the connecting means mounting area 30b with the bolt 35a, thereby connecting the additional leg device 3 to the overheight attachment 2. This connection makes it possible to prevent the additional leg device 3 from falling off the overheight attachment 2 even if the unlocking operation is performed in the twist lock mechanism 22 of the overheight attachment 2.

[0032] A plate-like member 38, for example, disk-shaped, having an outer shape larger than the outer shape (outer diameter) of the protrusion 21a can be attached to the end face of the protrusion 21a. A female screw portion into which a bolt 38a is screwed is formed on the end face of the protrusion 21a, and an insertion hole into which the bolt 38a is inserted is formed in the plate-like member 38, so that the plate-like member 38 can be fixed to the end face of the protrusion 21a by the bolt 38a. The plate member 38 is attached in anticipation of a case in which a large force is applied such that the legs of the overheight attachment 2 open. In addition, even if one partial additional leg device body 3A falls off one engagement member 35 and the additional leg device body 3 tilts, if the other plate-like member 38 exists, it is possible to prevent the additional leg device body 3 from slipping off the other protrusion 21a.

[0033] With this configuration, the additional leg device 3 can be attached to the overheight attachment 2, and the leg 21 of the overheight attachment 2 is extended by the additional leg 31, so that the overheight attachment 2 having a predetermined leg length can be used to handle a higher overheight load. That is, by connecting the additional leg 31 to the leg 21, the additional twist lock mechanism 33 of the additional leg device 3 can hoist the container 100 by locking the corner fitting 101 with the additional engagement protrusion 33c in conjunction with the twist lock mechanism 22 of the overheight attachment 2. On the other hand, when the additional leg device 3 is detached from the overheight attachment 2, the length of each leg 21 of the overheight attachment 2 can be made the same as before, so that when the overheight attachment 2 is transported to a port, the transport vehicle can pass under a pedestrian bridge or through a tunnel without any problems as before.

[0034] Furthermore, the additional leg device 3 of the embodiment includes two partial additional leg device bodies 3A, each consisting of an attachment portion 30, an additional leg portion 31, and an additional twist lock mechanism 33, spaced apart at an interval corresponding to the width of the short side of the container 100, and also includes a support portion 32 that integrally supports these two partial additional leg device bodies 3A. As a result, by providing two additional leg devices 3 each having the two partial additional leg device bodies 3A, the four legs 21 of the overheight attachment 2 can be extended. Also, each additional leg device 3 has a planar form, which has the advantage that the additional leg devices 3 do not take up much space when transporting or storing them.

[0035] Furthermore, if the additional leg device 3 has a connecting means mounting region 30b and is configured so that the connecting means (engaging member 35) can be connected to the overheight attachment 2, the additional leg device 3 can be prevented from falling off the overheight attachment 2 even if the overheight attachment 2 is put into an unlocking operation state in order to detach the container 100 from the additional leg device 3. Furthermore, if the engaging member 35 is configured to be attached to the connecting means mounting region 30b, it becomes easy to hook the additional leg device 3 onto the protruding portion 21a and hold it.

[0036] When a disk-shaped plate member 38 having an outer shape larger than the outer shape (outer diameter) of the protrusion 21a is attached to the end face of the protrusion 21a, the engagement member 35 (connecting means) can be prevented from detaching from the protrusion 21a by the simple task of attaching the plate member 38 to the end of the protrusion 21a.

[0037] The additional leg device 3 is not limited to the above-mentioned form, and may be configured, for example, as one partial additional leg device body 3A without the support portion 32. Alternatively, it may be configured as a frame-shaped body having four partial additional leg device bodies 3A and the support portion 32 also provided on the long side.

[0038] Furthermore, the connecting means is not limited to being configured with the engaging member 35, and may be configured such that the additional leg device 3 or the partial additional leg device body 3A is connected to the overheight attachment 2 by a bolt inserted laterally instead of the protruding portion 21a. Alternatively, the additional leg device 3 or the partial additional leg device body 3A may be configured to be connected to the overheight attachment 2 by a bolt inserted vertically.

[0039] <Overheight attachment> DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An overheight attachment according to an embodiment of the present invention will now be described with reference to the accompanying drawings.

[0040] 7(A) shows a part of the leg 61 of the overheight attachment 6 of the embodiment and a part of the twist lock mechanism 62 provided in the leg 61. The leg 61 is composed of a first leg 611 located on the mother spreader side and a second leg 612 located on the corner fitting 101 side. The shaft 63 of the twist lock mechanism 62 is also composed of a first shaft portion 631 located on the mother spreader side and a second shaft portion 632 located on the corner fitting 101 side. An engaging protrusion 62a that engages with the corner fitting 101 is located at the lower end of the second shaft portion 632. That is, the leg 61 and the twist lock mechanism 62 are composed of a first portion located on the mother spreader side and a second portion on the side having the engaging protrusion 62a that engages with the corner fitting 101.

[0041] 7(B), a recess 631a is formed at the lower end of the first shaft portion 631, and a bolt insertion hole is formed that passes through the recess 631a and intersects with the axial direction of the first shaft portion 631. A protrusion 632a that fits into the recess 631a is formed at the upper end of the second shaft portion 632, and a bolt insertion hole is formed in the protrusion 632a and passes through the protrusion 632a and intersects with the axial direction of the second shaft portion 632.

[0042] When joining and fixing the second shaft portion 632 to the first shaft portion 631, the convex portion 632a of the second shaft portion 632 is fitted into the concave portion 631a, a bolt 634 is passed horizontally through these bolt insertion holes, and a nut is screwed onto the bolt 634.

[0043] The outer plate portion on the lower side of the first leg portion 611 has an overlapping portion that is fitted onto the outer plate portion on the upper side of the second leg portion 612, and has a notched opening 611a that allows the bolt 634 and the nut to be attached. In addition, the second leg portion 612 is fixed to the first leg portion 611 by screwing the bolt 64 into the overlapping portion.

[0044] In an operating state in which the second leg portion 612 is fixed to the first leg portion 611 and the second shaft portion 632 is connected and fixed to the first shaft portion 631, when the twist lock mechanism 62 is in an unlocked state, the engaging protrusion 62a can be attached to and detached from the corner fitting 101, and when in a locked state, the engaging protrusion 62a cannot be attached to and detached from the corner fitting 101.

[0045] With the above configuration, the overheight attachment 6 can handle overheight cargo by attaching the second leg 612 and the second shaft portion 632 to the overheight attachment 6. On the other hand, when the second leg 612 and the second shaft portion 632 are removed from the overheight attachment 6, the length of each leg 61 of the overheight attachment 6 is shortened to the first leg 611 only, so that when the overheight attachment 6 is transported to a port, the transport vehicle can pass under a pedestrian bridge or through a tunnel without any problems as before. Note that by preparing multiple types of the second leg 612 and the second shaft portion 632 with different lengths, cargo of different overheight amounts can be handled.

[0046] Moreover, in the overheight attachment 6, the first shaft portion 631 and the second shaft portion 632 are fixed to each other by the bolt 634 inserted laterally, and the outer plate portion on the lower side of the first leg portion 611 has an overlapping portion that fits into the outer plate portion on the upper side of the second leg portion 612, and has an opening 611a that allows the bolt 634 and the nut to be attached, so that the first shaft portion 631 and the second shaft portion 632 and the first leg portion 611 and the second leg portion 612 can be easily connected. The notched opening that allows the bolt 634 and the nut to be attached may be formed on the second leg portion 612 side. Also, in order to allow the bolt 634 and the nut to be attached, at least one end side (connection side) of the outer plate portion of the first leg portion 611 and the outer plate portion of the second leg portion 612 may have a U-shaped cross section to form an opening (window).

[0047] Although the embodiment of the present invention has been described above with reference to the drawings, the present invention is not limited to the illustrated embodiment. Various modifications and variations can be made to the illustrated embodiment within the same scope as the present invention or within an equivalent scope. [Explanation of symbols]

[0048] 1: Mother Spreader 2: Overheight attachment 3: Additional leg device 3A: Partial additional leg device body 6: Overheight attachment 20: Main body frame 21: Legs 21a:Protrusion 22: Twist lock mechanism 22a:Shaft part 22c: Engagement convex part 30: Mounting part 30a:Elongated engagement hole 30b: Connection means attachment area 31:Additional legs 32: Support part 33: Additional twist lock mechanism 33a: Additional shaft 33b: Additional engagement recess 33c: Additional engagement protrusion 33d: Engagement part 33d1: First engagement notch 33d2: Second engagement notch 34: Rotation restriction mechanism 34a: Vertical axis 34b: Square section 34c: Return spring 35: Engagement member 35a:Bolt 36: Upper plate part 37:Lower plate part 38: Plate-shaped member 38a:Bolt 61: Legs 62: Twist lock mechanism 62a: Engagement protrusion 63: Shaft 64: Bolt 100: Container 101: Corner fittings 211: Engagement slot 351: Base 352: Hook part 352a: Horizontal hole 611: 1st leg 611a: opening 612:Second leg 631: 1st axis part 631a : Recess 632: 2nd axis part 632a: Convex 634: Bolt

Claims

1. An additional leg device attached to an overheight attachment, the additional leg device having a twist lock mechanism on each leg that engages with a corner fitting of a container, an attachment portion that is attached by a locking operation at an engaging protrusion of the twist lock mechanism located on the lower end side of the leg of the overheight attachment and that can be detached by an unlocking operation at the engaging protrusion; An additional leg portion extending downward from the mounting portion; an additional twist lock mechanism provided on the additional leg; It is equipped with The additional leg device is characterized in that the additional twist lock mechanism engages an additional engagement protrusion located on the lower end side of the additional leg with a corner fitting and performs a locking operation on the corner fitting by the additional engagement protrusion in conjunction with the twist lock mechanism of the overheight attachment.

2. 2. The additional leg device according to claim 1, further comprising: two partial additional leg device bodies, each of which has the mounting portion, the additional leg portion, and the additional twist lock mechanism spaced apart at an interval corresponding to the width of the short side of the container; and a support portion that integrally supports the two partial additional leg device bodies.

3. 3. The additional leg device according to claim 1 or 2, further comprising a connecting means mounting area to which a connecting means is attached that prevents the additional leg device from coming off the overheight attachment during the unlocking operation of the twist lock mechanism of the overheight attachment.

4. 4. The additional leg device according to claim 3, wherein an engaging member having an engaging hole that engages with a protrusion protruding laterally from the leg of the overheight attachment is attached to the connecting means mounting area as the connecting means.

5. 5. The additional leg device according to claim 4, wherein the connecting means attached to the connecting means attachment area is capable of attaching a plate-like member that does not pass through the engagement hole to an end of the protrusion that is passed through the engagement hole.

6. An overheight attachment having twist lock mechanisms on each leg that engage with corner fittings of a container, an overheight attachment characterized in that the leg and the twist lock mechanism comprise a first portion located on the mother spreader side and a second portion on a side having an engaging protrusion that engages with the corner fitting, the second portion being detachably provided on the first portion.

7. 7. The overheight attachment according to claim 6, wherein the first and second parts are fixed to each other by a bolt inserted laterally, and an opening for passing the bolt is formed in an outer plate of the leg.

Images