Suspension tool

Abstract

To suspend an object in a stable state.SOLUTION: A gripping part 130 of a suspension tool 100 is provided in one side surface part of an unpacked corrugated board box WK. In this arrangement, an end part of a flap, which is folded along an outer surface of the unpacked corrugated board box WK, is supported from a -Z direction side by a recessed support part. The flap of the unpacked corrugated board box WK, which is supported with a support part 320, is gripped from the outside of the unpacked corrugated board box by an outside gripping part. Furthermore, the side surface part of the unpacked corrugated board box WK, which is supported by the support part and overlapping with the flap held by the outside gripping part, is gripped from the inside by an inside gripping part. After this arrangement, when the suspension tool 100 is raised, a sling 120 becomes taut, and when the suspension tool 100 is further raised, the unpacked corrugated board box WK is dynamically lifted off such that the unpacked corrugated board box WK is suspended by the suspension tool 100.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a sling. [Background technology]

[0002] Conventionally, when transporting an object using a cargo handling machine, a sling is used to suspend an object from the cargo handling machine. Various techniques have been proposed for the sling depending on the material, shape, etc. of the object to be suspended.

[0003] One of the proposed techniques is a technique for suspending a container such as a cardboard box (hereinafter, simply referred to as a "container") (see Patent Document 1: hereinafter, referred to as a "conventional example"). This conventional technique includes an L-shaped upper claw that fits the corners of the top and side of a cardboard box (hereinafter, referred to as an "upper side corner"), an L-shaped lower side claw that fits the corners of the side and bottom of the cardboard box diagonally opposite the upper side corner (hereinafter, referred to as a "lower side corner"), a first rope attached to the upper claw, and a second rope attached to the lower side claw. These first and second ropes are gathered in parallel by an opening prevention device and connected to a connecting part that is attached to a hook of a cargo handling machine. The upper claw has a grip. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 11-124289 Summary of the Invention [Problem to be solved by the invention]

[0005] In the above-mentioned conventional technique, when hanging a cardboard box, the upper claws are brought into contact with the top and sides of the cardboard box. Therefore, the conventional technique is a technique for hanging a packed cardboard box. When hanging an opened cardboard box with the conventional technique, the upper claws are brought into contact only with the outer side. As a result, it may not be possible to hang an opened cardboard box in a stable state. In addition, in the conventional technique, the width of the two claws is short. Therefore, when the weight of the contents of the cardboard box is heavy, not only is it difficult to hang the cardboard box in a stable state, but there is also a risk that a force will be applied to the narrow part of the cardboard box where the claws are in contact, causing the cardboard box to deform.

[0006] Incidentally, when the contents (e.g., solids) of an opened cardboard box are moved to another large container, if the worker can tilt the cardboard box while hanging it from a material handling machine without lifting it, the workload imposed on the worker can be reduced and the work efficiency can be improved. In the above-mentioned conventional technology, the first and second ropes are connected to the connecting part via an opening prevention device. As a result, when the worker uses the grips arranged on the upper surface claws to perform the work, if the cardboard box is tilted toward the side lower surface claws, the two ropes attached to the upper surface claws and the side lower surface claws get in the way of the movement of the contents. For this reason, it is preferable to tilt the cardboard box in a direction perpendicular to the line connecting the upper surface claws and the side lower surface claws.

[0007] However, in the above-mentioned conventional technology, the lengths of the first and second ropes are fixed, which may result in poor operability when the cardboard box is tilted, as the upper rope may sag.

[0008] For this reason, there is a need for a technology that can suspend containers such as opened cardboard boxes in a stable state, reduce the workload involved in moving the contents, and improve operability. Meeting such a demand is one of the problems that the present invention is intended to solve.

[0009] The present invention has been made in consideration of the above circumstances, and has an object to provide a new suspending device that can suspend an object in a stable manner. [Means for solving the problem]

[0010] The present invention is a suspending device for suspending a bottomed container having an outer surface and a lid extending from an upper edge of the outer surface and capable of being folded at the upper edge, the suspending device comprising a suspending part that can be raised and lowered, a gripping part that grips the container, and a connecting part that connects the suspending part to the gripping part, the gripping part comprising a support part that supports the end of the lid that is folded over to fit along the outer surface, and an inner gripping part that grips the inner surface of the container. [Brief description of the drawings]

[0011] [Figure 1] FIG. 1 is an external view (part 1) of a suspending tool according to a first embodiment of the present invention that is attached to a lifting device and suspends a container. [Diagram 2] FIG. 2 is an external view (part 2) of the hoist, container, and lifting device in FIG. [Diagram 3] FIG. 3 is an external view of the sling shown in FIGS. [Figure 4] FIG. 4 is a diagram for explaining the configuration of the hanging part in FIG. 1 to FIG. 3. [Diagram 5] FIG. 4 is a diagram (part 1) for explaining the configuration of the gripping portion in FIGS. 1 to 3. [Figure 6] FIG. 4 is a diagram (part 2) for explaining the configuration of the gripping portion in FIGS. 1 to 3. [Figure 7] This is a diagram for explaining the state of the hanging tool when hanging a container and removing the contents of the container. [Figure 8] FIG. 2 is a second diagram for explaining the state of the hanging tool when the container is hung and the contents of the container are removed. [Figure 9] FIG. 11 is an external view (part 1) of a suspender according to a second embodiment of the present invention that is attached to a lifting device and suspends a container. [Figure 10] FIG. 10 is an external view (part 2) of the hoisting tool, the container, and the lifting device in FIG. 9. [Figure 11] FIG. 11 is an external view of the sling shown in FIGS. [Figure 12] FIG. 12 is a diagram (part 1) for explaining the configuration of the gripping portion in FIGS. 9 to 11. [Figure 13] FIG. 12 is a diagram (part 2) for explaining the configuration of the gripping portion in FIGS. 9 to 11. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings. In the following description and drawings, the same or equivalent elements are designated by the same reference numerals, and duplicated description will be omitted.

[0013] [First embodiment] A first embodiment of the present invention will be described with reference to FIGS.

[0014] <Configuration> 1 and 2 show external views of a suspender 100 according to a first embodiment, which is attached to a lifting device ML and suspends a container. A coordinate system (X, Y, Z) for explaining the suspender 100 is defined as shown in the figures. Here, FIG. 1 is a perspective view of the suspender 100, the lifting device ML, and the container. Also, FIG. 2 is a view of the suspender 100, the lifting device ML, and the container shown in FIG. 1, as viewed from the -Y direction side. Also, FIG. 3 shows a perspective view of the suspender 100 shown in FIG. 1, with the lifting device ML and the container omitted.

[0015] Here, the lifting device ML is equipped with a chain that is wound inside the main body of the lifting device ML and can be wound up and unwound, and a hook is attached to the end of the chain. The hoist 100 is attached to the lifting device ML by hooking this hook onto a hook part of a hanging part at a vertically upper part of the hoist 100. The lifting device ML is equipped with an operation part, and a worker can operate the operation part to wind and unwind the chain to raise and lower the hoist 100. The lifting device ML is placed at a predetermined position in a building and installed in a movable state.

[0016] In the first embodiment, the container is a cardboard box in the shape of a rectangular parallelepiped with a bottom, and the cardboard box has a flap (lid) that extends from the upper edge of the outer side and can be bent. The cardboard box hung by the hoist is a cardboard box that has been opened and folded back outward so that the flap follows the outer side (hereinafter, also referred to as an "opened cardboard box WK"). The open cardboard box WK is designed to allow contents such as solid objects to be placed inside. The hoist 100 grips the outer and inner sides of one side portion of the open cardboard box WK and suspends the open cardboard box WK.

[0017] 1 to 3, the sling 100 includes a suspending portion 110, a sling 120, and a gripping portion 130. Here, the sling 120 corresponds to the connecting portion.

[0018] Configuration of the hanging portion 110 The configuration of the above-mentioned hanging portion 110 will be described.

[0019] 4 shows an external view of the suspending part 110. The suspending part 110 is attached to the lifting device ML, and a sling 120 is attached thereto.

[0020] 4, the hanging part 110 includes fixing members 111 and 112, a hook part 113, and a sling guide 114. Here, the sling guide 114 corresponds to the connecting part guide.

[0021] The fixing members 111 and 112 are members including a surface parallel to the YZ plane. The fixing member 111 is disposed on the +X direction side, and the fixing member 112 is disposed on the -X direction side. A hook portion 113 and a sling guide 114 are fixed to the fixing members 111 and 112.

[0022] In the first embodiment, the hook portion 113 is a cylindrical member parallel to the X-axis direction. The hook portion 113 is fixed to the +Z direction side of the fixing members 111, 112. The hoist 100 is attached to the lifting device ML by hooking a hook attached to an end of a chain of the lifting device ML onto the hook portion 113.

[0023] The sling guide 114 is a cylindrical member parallel to the X-axis direction. The sling guide 114 is fixed to the -Z direction sides of the fixing members 111, 112. The sling guide 114 is capable of slidably mounting the sling 120.

[0024] "Sling 120" Returning to Figs. 1 to 3, the above-mentioned sling 120 will be described. The sling 120 connects the suspension part 110 and the grip part 130. In the first embodiment, the sling 120 is a belt-shaped fiber suspension belt, and has a main body and eyes at both ends. The belt-shaped sling 120 is inserted between the sling guide 114 and the hook part 113 of the suspension part 110. Then, both ends of the sling 120 are attached to the grip part 130. As a result, the sling 120 is slidable relative to the sling guide 114.

[0025] Configuration of gripping portion 130 A description will now be given of the configuration of the gripping portion 130. The gripping portion 130 grips one side surface portion of the opened cardboard box WK from the outer surface and the inner surface.

[0026] Figures 5 and 6 show external views of the gripping part 130. Figure 5 is a perspective view of the gripping part 130. Figure 6(A) is a view of the gripping part 130 shown in Figure 5 as seen from the -Y direction side, and Figure 6(B) is a view of the gripping part 130 shown in Figure 5 as seen from the +X direction side.

[0027] 5 and 6, gripping portion 130 includes L-shaped arm portions 311, 312, a support portion 320, outer gripping portions 331, 332, an attachment portion 340, and inner gripping portions 341, 342. Grip portion 130 also includes sling attachment portion 351 which is a first attachment portion, sling attachment portion 352 which is a second attachment portion, and a bend portion 353.

[0028] The L-shaped arm parts 311, 312 are formed into an L-shape and extend in the Y-axis direction and the Z-axis direction. The L-shaped arm parts 311, 312 are connected at the -Y-axis end of the part extending in the Y-axis direction and the +Z-axis end of the part extending in the Z-axis direction. In the first embodiment, the length of the L-shaped arm parts 311, 312 in the Y-axis direction is approximately the same as the length of the unpacked cardboard box WK in the Y-axis direction. The L-shaped arm part 311 and the L-shaped arm part 312 are arranged at a predetermined interval in the X-axis direction. The L-shaped arm part 311 is arranged on the +X-direction side, and the L-shaped arm part 311 is arranged on the -X-direction side. Hereinafter, the part of the L-shaped arm parts 311, 312 extending in the Y-axis direction is also referred to as the "Y arm", and the part extending in the Z-axis direction is also referred to as the "Z arm".

[0029] The support portion 320 is a concave portion extending along the X-axis direction, and is U-shaped in the YZ plane view. The support portion 320 is attached to the -Z direction side of the +Y direction side of the Z arm of the L-shaped arm portions 311, 312. The support portion 320 supports the end portion of the flap folded so as to fit along the outer surface of the unpacking cardboard box WK from the -Z direction side.

[0030] The outer gripping parts 331, 332 are protrusions attached to the +Y direction side of the Z arms of the L-shaped arm parts 311, 312, on the +Z direction side of the support part 320. The outer gripping part 331 is attached to the Z arm of the L-shaped arm part 311, and the outer gripping part 332 is attached to the L-shaped arm part 312. The outer gripping parts 331, 332 grip the flaps of the unpacking cardboard box WK supported by the support part 320, i.e., the flaps folded back so as to follow the outer surface of the cardboard box, from the outside of the unpacking cardboard box WK. The outer gripping parts 331, 332 have a function of preventing the flaps of the unpacking cardboard box WK from opening.

[0031] Here, the support portion 320 supports the end portion of the flap of the unpacking cardboard box WK from the -Z direction side while the outer gripping portions 331, 332 are positioned on the +Y direction side so that the outer gripping portions 331, 332 can grip the flap from the outside.

[0032] The mounting portion 340 is a member extending along the X-axis direction, and is attached to the +Y side of the Z arms of the L-shaped arm portions 311, 312, on the +Z side of the outer gripping portions 331, 332. Inner gripping portions 341, 342 are attached to the mounting portion 340.

[0033] The inner gripping parts 341, 342 are flat members parallel to the XZ plane. The inner gripping part 341 is attached to the end of the mounting part 340 on the +X direction side, and the inner gripping part 342 is attached to the end of the mounting part 340 on the -X direction side. The inner gripping parts 341, 342 grip the side part of the unpacking cardboard box WK that is supported by the support part 320 and overlaps with the flap that the outer gripping parts 331, 332 grip from the inside. The part gripped by the inner gripping parts 341, 342 corresponds to the inside surface of the container. The inner gripping parts 341, 342 have a function of suppressing the bending of the side part of the unpacking cardboard box WK when the unpacking cardboard box WK is lifted.

[0034] Here, the inner gripping portions 341, 342 are disposed on the +Y direction side of the support portion 320 so that the support portion 320 supports a flap of the unpacking cardboard box WK, the outer gripping portions 331, 332 grip the flap from the outside, while the inner gripping portions 341, 342 grip one side surface portion connected to the flap from the inside. The length of the inner gripping portions 341, 342 along the Z direction is determined in advance based on experiments, simulations, etc., taking into consideration the suppression of deflection of the side surface portion of the unpacking cardboard box WK, the ease with which the inner gripping portions 341, 342 can be inserted into the unpacking cardboard box WK when an object is contained therein, and the characteristics of the type of contents (such as characteristics of whether the contents should be damaged), etc.

[0035] In addition, the distance along the Z-axis direction between the groove portion of the support portion 320 and the -Z direction side portion of the mounting portion 340 is determined in advance based on experiments, simulations, etc., taking into account the size, shape, etc. of the flap of the cardboard box.

[0036] The sling attachment part 351 is a cylindrical member extending along the X-axis direction. The sling attachment part 351 is attached between the +Y direction side of the Y arm of the L-shaped arm part 311 and the +Y direction side of the Y arm of the L-shaped arm part 312. One end part of the sling 120 is attached to the sling attachment part 351.

[0037] The sling attachment portion 352 is a cylindrical member extending along the X-axis direction. The sling attachment portion 352 is attached between the -Z direction side of the Z arm of the L-shaped arm portion 311 and the -Z direction side of the Z arm of the L-shaped arm portion 312. The other end of the sling 120 is attached to the sling attachment portion 352.

[0038] Thus, in the first embodiment, the gripping portion 130 has a first attachment portion, sling attachment portion 351, and a second attachment portion, sling attachment portion 352, and one end of the sling 120 is attached to the first attachment portion and the other end of the sling 120 is attached to the second attachment portion.

[0039] The bend portion 353 is a cylindrical member extending along the X-axis direction. The bend portion 353 is attached between an approximate center portion of the Z arm of the L-shaped arm portion 311 in the Z direction and an approximate center portion of the Z arm of the L-shaped arm portion 312 in the Z direction. The bend portion 353 changes the direction of the sling 120.

[0040] <Operation> The operation of the sling 100 configured as above will now be described.

[0041] {Installation of the unpacked cardboard box (container) WK and hanging of the unpacked cardboard box WK} It is assumed that the hoist 100 is attached to and suspended from the lifting device ML. Also, it is assumed that initially, the cardboard box is opened, the unpacked cardboard box WK, which is a container, contains contents such as solid objects, and the unpacked cardboard box WK is placed on the floor.

[0042] In this state, first, the worker operates the operating part of the lifting device ML to adjust the height position of the hoist 100, and positions the gripping part 130 on one side portion of the unpacking cardboard box WK. During this positioning, the concave support part 320 supports the end of the flap folded back so as to follow the outer surface of the unpacking cardboard box WK from the -Z direction side, and the outer gripping parts 331, 332 grip the flap of the unpacking cardboard box WK supported by the support part 320 from the outside of the unpacking cardboard box. During this positioning, the inner gripping parts 341, 342 grip from the inside the side portion of the unpacking cardboard box WK that is overlapped with the flap supported by the support part 320 and gripped from the outside by the outer gripping parts 331, 332.

[0043] Next, the worker operates the operating part of the lifting device ML to move (raise) the hoist 100 in the +Z direction. As the hoist 100 rises, the sling 120 becomes taut, and as the hoist 100 rises further, the unpacked cardboard box WK breaks through the ground and is suspended by the hoist 100 (see FIGS. 1 and 2).

[0044] {Removing the contents of unpacked cardboard box WK} 1 and 2, when moving the contents of the unpacked cardboard box WK to another large container, the worker grips at least one of L-shaped arm portion 311 and L-shaped arm portion 312. Next, the worker rotates hoist 100 clockwise on the YZ plane with the gripping hand.

[0045] When the user rotates the sling 100 in this manner, the sling 120 attached to the sling guide 114 slides on the sling guide 114, causing the sling 100 and the unpacked cardboard box WK to become tilted as shown in Figures 7 and 8. Here, Figure 7 is a perspective view showing the -Y direction side of the sling 100, and Figure 8 is a perspective view showing the +Y direction side of the sling 100. As a result, the contents of the unpacked cardboard box WK can be moved to another large container.

[0046] As described above, in the first embodiment, the gripping portion 130 of the hoist 100 is disposed on one side surface of the unpacking cardboard box WK. During such disposition, the concave support portion 320 supports the end of the flap folded back so as to follow the outer surface of the unpacking cardboard box WK from the -Z direction side, and the outer gripping portions 331, 332 grip the flap of the unpacking cardboard box WK supported by the support portion 320 from the outer surface of the unpacking cardboard box. During such disposition, the inner gripping portions 341, 342 grip, from the inner surface, the side surface portion of the unpacking cardboard box WK that overlaps with the flap supported by the support portion 320 and gripped from the outside by the outer gripping portions 331, 332. Then, when the worker operates the operating part of the lifting device ML and the hoisting tool 100 rises, the sling 120 becomes taut, and as the hoisting tool 100 rises further, the unpacked cardboard box WK breaks free from the ground and is suspended from the hoisting tool 100.

[0047] Here, inner gripping portion 341 is attached to the end of mounting portion 340 on the +X direction side, and inner gripping portion 342 is attached to the end of mounting portion 340 on the -X direction side. In this way, inner gripping portions 341, 342 grip both ends of one side surface portion, rather than a narrow portion of the side surface portion. As a result, no force is applied to the narrow portion of the cardboard box, reducing the risk of the cardboard box being deformed.

[0048] Therefore, in the first embodiment, an opened container such as a cardboard box can be hung in a stable state.

[0049] In the first embodiment, when performing the task of moving the contents of the unpacking cardboard box WK to another large container, the worker grips at least one of L-shaped arm portion 311 and L-shaped arm portion 312. Next, when the worker rotates the hoist 100 clockwise on the YZ plane, the sling 120 attached to the sling guide 114 slides, and the hoist 100 and the unpacking cardboard box WK rotate, so that the opening of the unpacking cardboard box WK faces downward. As a result, the contents of the unpacking cardboard box WK can be moved to another large container.

[0050] Here, the sling 100 grips one side of the unpacked cardboard box. The sling 120 is slidably attached to the gripping part 130. As a result, when the opening of the unpacked cardboard box WK faces downward, there is nothing to impede the movement of the contents, improving operability. This reduces the workload involved in moving the contents and improves operability.

[0051] Therefore, according to the first embodiment, the object can be suspended in a stable state, and the contents inside the object can be moved efficiently.

[0052] [Second embodiment] A second embodiment of the present invention will be described with reference mainly to FIGS.

[0053] <Configuration> 9 and 10 show external views of a suspender 100B according to a second embodiment, which is attached to a lifting device ML and suspends an unpacked cardboard box WK, which is a container. Here, FIG. 9 is a perspective view of the suspender 100B, the lifting device ML, and the container. Also, FIG. 10 is a view of the suspender 100B, the lifting device ML, and the container shown in FIG. 9, as viewed from the +X direction side. Also, FIG. 11 shows a perspective view of the suspender 100B shown in FIG. 9, with the lifting device ML and the container omitted.

[0054] 9 to 11 collectively show that suspender 100B differs from suspender 100 according to the first embodiment described above in that it includes suspender portion 110B instead of suspender portion 110, and in that it includes two gripping portions 130B1 and 130B2 instead of gripping portion 130. The following description will focus mainly on these differences.

[0055] Configuration of hanging portion 110B The configuration of the above-mentioned hanging portion 110B will be described.

[0056] As shown in FIG. 11, the hanging portion 110B includes a hook portion 115 and a connector 116.

[0057] In the second embodiment, the hook portion 115 is a fixture of an O-shaped annular member forming an elongated hole. A connection portion 116 is connected to the hook portion 115. The suspender 100B is attached to the lifting device ML by hanging a hook attached to an end of a chain of the lifting device ML on the hook portion 115.

[0058] The above-mentioned connecting part 116 is a connector made of a plate-like member having a circular opening and an elongated closed opening. The hook part 115 is connected to the connecting part 116 using the circular opening of the connecting part 116. In addition, the sling 120 is passed through the elongated opening of the connecting part 116, and the sling 120 is slidably attached to the connecting part 116.

[0059] Configuration of gripping portions 130B1 and 130B2 The configuration of the gripping portions 130B1 and 130B2 will be described. In the second embodiment, the gripping portion 130B1 is disposed on the -Y direction side of the entire suspender 100B, and the gripping portion 130B2 is disposed on the -Y direction side of the entire suspender 100B.

[0060] 12 and 13, the gripping portion 130B j As a representative of (j=1,2), an external view of gripping portion 130B1 is shown. In the second embodiment, gripping portion 130B2 is configured similarly to gripping portion 130B1. Fig. 12 is a perspective view of gripping portion 130B1. Fig. 13(A) is a view of gripping portion 130B1 shown in Fig. 12 as viewed from the +Y direction side, and Fig. 13(B) is a view of gripping portion 130B1 shown in Fig. 12 as viewed from the +X direction side.

[0061] As shown in Figures 12 and 13, the gripping portion 130B1 includes L-shaped arm portions 311B and 312B, a support portion 320B, outer gripping portions 331B and 332B, an attachment portion 340B, and inner gripping portions 341B and 342B. The gripping portion 130B1 also includes a sling attachment portion 351B. That is, the gripping portion 130B1 differs from the gripping portion 130 of the first embodiment described above in that it includes only one sling attachment portion and does not include a bend portion.

[0062] The L-shaped arm parts 311B and 312B are formed in an L-shape and extend in the Y-axis direction and the Z-axis direction, similar to the L-shaped arm parts 311 and 312 of the first embodiment described above. The L-shaped arm parts 311B and 312B are connected at one end of the part extending in the Y-axis direction and at the end on the +Z direction side of the part extending in the Z-axis direction. In the second embodiment, the length of the L-shaped arm parts 311B and 312B in the Y-axis direction is determined based on experiments, simulations, experiences, etc., from the viewpoint of suspending the unpacked cardboard box WK in a stable state. In FIG. 10, the ratio of the length of the L-shaped arm parts 311B and 312B in the Y-axis direction to the length of the unpacked cardboard box WK in the Y-axis direction is about 1 / 2. Furthermore, when the length in the Y-axis direction of the hanging unpacking cardboard box is longer than that of the unpacking cardboard box shown in Fig. 10, the ratio of the length in the Y-axis direction of the L-shaped arm portions 311B and 312B to the length in the Y-axis direction of the unpacking cardboard box may be further reduced. The L-shaped arm portion 311B and the L-shaped arm portion 312B are disposed at a predetermined interval in the X-axis direction. The L-shaped arm portion 311B is disposed on the +X direction side, and the L-shaped arm portion 311B is disposed on the -X direction side.

[0063] The support portion 320B is a concave portion extending along the X-axis direction, and is U-shaped in the YZ plane view, similar to the support portion 320 of the first embodiment described above. The support portion 320B is attached to the -Z direction side of the +Y direction side of the Z arm of the L-shaped arm portions 311B, 312B. The support portion 320B supports the end of the flap folded along the outer surface of the unpacking cardboard box WK from the -Z direction side.

[0064] The outer gripping parts 331B and 332B are protrusions attached to the +Y direction side of the Z arms of the L-shaped arm parts 311B and 312B on the +Z direction side of the support part 320B. The outer gripping part 331B is attached to the Z arm of the L-shaped arm part 311B, and the outer gripping part 332 is attached to the L-shaped arm part 312B. The outer gripping parts 331B and 332B grip the flaps of the unpacking cardboard box WK supported by the support part 320B, that is, the flaps folded back along the outer surface of the cardboard box, from the outside of the unpacking cardboard box WK. The outer gripping parts 331B and 332B have a function of preventing the flaps of the unpacking cardboard box WK from opening, similar to the outer gripping parts 331 and 332 of the first embodiment described above.

[0065] Here, as in the first embodiment described above, the support portion 320B is positioned on the +Y side of the outer gripping portions 331B, 332B so that the support portion 320B supports the end portion of the flap of the unpacking cardboard box WK from the -Z side while the outer gripping portions 331B, 332B can grip the flap from the outside.

[0066] The mounting portion 340B is a member extending along the X-axis direction, similar to the mounting portion 340B of the first embodiment described above, and is attached to the +Y side of the Z arms of the L-shaped arm portions 311B, 312B, on the +Z side of the outer gripping portions 331B, 332B. The inner gripping portions 341B, 342B are attached to the mounting portion 340B.

[0067] The inner gripping parts 341B and 342B are flat members parallel to the XZ plane, similar to the inner gripping parts 341 and 342 of the first embodiment described above. The inner gripping part 341B is attached to the end of the mounting part 340B on the +X direction side, and the inner gripping part 342B is attached to the end of the mounting part 340B on the -X direction side. The inner gripping parts 341B and 342B grip the side part of the unpacking cardboard box WK, which is supported by the support part 320B and overlaps with the flap that the outer gripping parts 331B and 332B grip from the inside. The inner gripping parts 341B and 342B have a function of suppressing the bending of the side part of the unpacking cardboard box WK when the unpacking cardboard box WK is lifted, similar to the inner gripping parts 341B and 342B of the first embodiment described above.

[0068] Here, the inner gripping parts 341B, 342B are disposed on the +Y direction side of the support part 320B so that the support part 320B supports the flap of the unpacking cardboard box WK, the outer gripping parts 331B, 332B grip the flap from the outside, and the inner gripping parts 341B, 342B grip the side part connected to the flap from the inside, as in the case of the first embodiment described above. Also, the length of the inner gripping parts 341B, 342B along the Z direction is determined in advance based on experiments, simulations, etc., in consideration of suppression of deflection of the side part of the unpacking cardboard box WK, ease of insertion of the inner gripping parts 341B, 342B into the inside when an object is contained in the unpacking cardboard box WK, and characteristics such as the type of contents, as in the case of the first embodiment described above.

[0069] In addition, the distance along the Z-axis direction between the groove portion of support portion 320B and the -Z direction side portion of mounting portion 340B is determined in advance based on experiments, simulations, etc., taking into account the size, shape, etc. of the flap of the cardboard box, as in the first embodiment described above.

[0070] The sling attachment portion 351B is a cylindrical member extending along the X-axis direction, similar to the sling attachment portion 351 of the first embodiment described above. The sling attachment portion 351B is attached between the +Y side of the Y arm of the L-shaped arm portion 311B and the +Y side of the Y arm of the L-shaped arm portion 312B. An end of the sling 120 is attached to the sling attachment portion 351B.

[0071] <Attaching the lifting tool 100B to the unpacked cardboard box WK> The attachment of the suspender 100B configured as above to an unpacked cardboard box (container) WK will be described.

[0072] It is assumed that the hoist 100B having the two gripping portions 130B1 and 130B2 is attached to the lifting device ML and suspended. Also, it is assumed that the cardboard box WK is initially unpacked and placed on the floor.

[0073] In the second embodiment, one end of the sling 120 is attached to the sling attachment portion 351B of the gripping portion 130B1, and the other end of the sling 120 is attached to the sling attachment portion 351B of the gripping portion 130B2. That is, one end and the other end of the sling 120 are attached to the gripping portions 130B1 and 130B2, respectively.

[0074] In this state, first, the worker operates the operating part of the lifting device ML to adjust the height position of the hoist 100B, and positions the gripping part 130B1 on one side part of the unpacking cardboard box WK, and positions the gripping part 130B2 on the other side part opposite the one side part of the unpacking cardboard box WK. During such positioning, for each of the gripping parts 130B1 and 130B2, the concave support part 320B supports the end part of the flap folded back so as to follow the outer surface of the unpacking cardboard box WK from the -Z direction side, and the outer gripping parts 331B and 332B grip the flap of the unpacking cardboard box WK supported by the support part 320B from the outside of the unpacking cardboard box. In addition, when positioned in this manner, the inner gripping portions 341B, 342B of the gripping portions 130B1, 130B2 respectively grip from the inside the side portion of the unpacking cardboard box WK that overlaps with the flap supported by the support portion 320B and gripped from the outside by the outer gripping portions 331B, 332B.

[0075] Next, the worker operates the operating part of the lifting device ML to raise the hoist 100B in the +Z direction. As the hoist 100B rises, the sling 120 becomes taut, and as the hoist 100B rises further, the unpacked cardboard box WK breaks through the ground and is suspended by the hoist 100B (see FIGS. 9 and 10).

[0076] As described above, in the second embodiment, one end of the sling 120 is attached to the sling attachment portion 351B of the gripping portion 130B1, and the other end of the sling 120 is attached to the sling attachment portion 351B of the gripping portion 130B2. In this state, the gripping portion 130B1 is disposed on one side surface of the unpacking cardboard box WK, and the gripping portion 130B2 is disposed on the other side surface opposite to the one side surface of the unpacking cardboard box WK. In this arrangement, for each of the gripping portions 130B1 and 130B2, the concave support portion 320B supports the end of the flap folded back so as to follow the outer surface of the unpacking cardboard box WK from the -Z direction side, and the outer gripping portions 331B and 332B grip the flap of the unpacking cardboard box WK supported by the support portion 320B from the outer surface of the unpacking cardboard box. In addition, during such arrangement, for each of gripping parts 130B1, 130B2, inner gripping parts 341B, 342B grip from the inner side of the side portion of the unpacking cardboard box WK that overlaps with the flap supported by support part 320B and gripped from the outside by outer gripping parts 331B, 332B. Then, when the worker operates the operation part of lifting device ML and hoisting tool 100B rises, sling 120 becomes taut, and as hoisting tool 100B rises further, unpacking cardboard box WK breaks through the ground and is suspended by hoisting tool 100B.

[0077] Here, the inner gripping portions 341B, 342B of the gripping portion 130B1 grip both ends of one side surface portion, not just the narrow portion of the one side surface portion. The inner gripping portions 341B, 342B of the gripping portion 130B2 grip both ends of the other side surface portion, not just the narrow portion of the other side surface portion. As a result, no force is applied to the narrow portion of the cardboard box, reducing the risk of the cardboard box being deformed.

[0078] Therefore, in the second embodiment, similarly to the first embodiment, an opened container such as a cardboard box can be suspended in a stable state.

[0079] Therefore, according to the second embodiment, an object can be suspended in a stable manner, similar to the first embodiment described above. [Modifications of the embodiment] The present invention is not limited to the above-described embodiment, and various modifications are possible.

[0080] In the first and second embodiments, the sling includes an outer gripping portion, but the outer gripping portion may be omitted. In the case where the outer gripping portion is omitted, a condition can be set that the side portion of the unpacked cardboard box is not bent by the inner gripping portion.

[0081] In addition, in the above first and second embodiments, an outer gripping portion is provided to prevent the flaps of the unpacking cardboard box from opening, but if the flaps do not open or if other means are provided to prevent the flaps from opening, the outer gripping portion may be omitted.

[0082] Further, in the above first and second embodiments, the sling is slidably attached to the suspension part, but it may be fixedly attached.

[0083] Furthermore, in the above first and second embodiments, the support portion has a recess extending along the X-axis direction, but it may be a plate-like portion extending along the X-axis direction.

[0084] In the second embodiment, the hoist has two gripping parts that grip the cardboard box, but the number of gripping parts may be three or more. For example, the number of gripping parts may be four, and the gripping parts may be disposed on four side portions of a rectangular parallelepiped cardboard box, so that the cardboard box is gripped by the four gripping parts.

[0085] In the second embodiment described above, the sling has two gripping parts, one end of the sling is attached to the sling attachment part of gripping part 130B1, and the other end of the sling is attached to the sling attachment part of gripping part 130B2. However, for example, the sling may have two gripping parts and two slings, and one end of each sling may be attached to the sling attachment part of each gripping part. In this case, the other end of each sling may be attached to the sling.

[0086] Furthermore, in the above first and second embodiments, the sling is a fiber suspension belt, but the sling may be a wire rope, a chain, or the like.

[0087] In the second embodiment, a sling is used as the connecting part. Alternatively, for example, a beam-shaped member may be used as the connecting part. In this case, for example, the center of the beam-shaped member is attached to the hanging part. Then, each end of one side and the other side of the beam-shaped member may be attached to the gripping parts 130B1 and 130B2, respectively. In this case, the weight balance of the gripping parts 130B1 and 130B2 may be appropriately adjusted in consideration of the positional deviation of the contents of the unpacked cardboard box.

[0088] The connecting portion may be, for example, a beam-shaped member and flexible members at both ends of the beam-shaped member. In this case, for example, the center of the beam-shaped member is attached to the hanging portion. Then, the gripping portions 130B1 and 130B2 may be attached to the flexible members attached to the ends of one side and the other side of the beam-shaped member, respectively.

[0089] Furthermore, in the above first and second embodiments, an unpacked cardboard box is suspended, but an object of another shape may be used as long as it can be supported by the support portion. [Explanation of symbols]

[0090] 100,100B … Hanging tool 110,110B … Hanging part 111,112 … Fixing parts 113 ... Hook section 114 ... Sling guide (connection guide) 115 ... Hook section 116 … Connection 120 … Sling (connection part) 130,130B1,130B2… Gripping part 311,311B,312,312B … L-shaped arm part 320,320B … Support part 331,331B,332,332B … Outer grip part 340,340B … Mounting part 341,341B,342,342B … Inner grip part 351 ... Sling attachment part 351B … Sling attachment part 352 ... Sling attachment part 353 ... Bend section ML … Lifting device WK: Unpacked cardboard box (container)

Claims

1. A lifting device that grasps a container having an outer surface on a side portion that surrounds the container to form an opening, and a lid that extends from an upper edge of the side portion that corresponds to one side of the opening and can be bent outward from the upper edge toward the outer surface, and that allows the container to be lifted and lowered by hanging it using a lifting device, The sling is A hanging part that is connected to the lifting device and is attached so that it can be lifted and lowered; A gripping portion that can contact at least the lid body and grip the container; a connecting portion that connects the hanging portion and the gripping portion in a vertical relationship and allows the hanging portion and the gripping portion to be raised and lowered by the lifting device; and The gripping portion is At least a support portion extending along one side of the end of the lid body bent outward and facing downward, and an arm portion to which the connecting portion is attached, are provided, The support portion is In response to contact from below at a predetermined length along one side of the downward-facing lid body, the arm portion connected to the hanging portion moves up and down to support the container so that the container can be hung with the opening facing upward. A sling characterized by:

2. The connecting portion is a strip-shaped material having an end portion for connecting to the arm portion and having a predetermined length extending between the upper and lower portions; The strip material is The other side of the end portion that is extended upward from the end portion on one side connected to the arm portion is entangled with a guide portion provided on the hanging portion so as to be slidable, thereby forming a connected state, When the lifting and lowering is performed, the portion of the strip material between the hanging portion and the gripping portion is tensioned.

2. The sling according to claim 1.

3. The guide portion provided on the hanging portion is The gripping portion has a columnar configuration that allows the entangled portion of the strip to slide when an external force is applied to the gripping portion, The edge portion of the strip material is The eye portion is provided to be attachable to a pillar-shaped portion of the arm portion, and enabling the sliding of the guide portion to tilt the opening upward in response to the application of the external force. The sling according to claim 2 .

4. The support portion provided on the gripping portion is The side surface portions surrounding the opening are provided so as to abut against each other along a downward side of each of the plurality of lid bodies.

3. The sling according to claim 1 or 2.

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