Hanging equipment

Abstract

To provide a hoisting accessory capable of stably lifting a box body in an ideal posture, in implementing drop testing to evaluate impact resistance performance of the box body.SOLUTION: A hoisting accessory 1 comprises: a front lower holding member 10 for covering a front lower apex P1 of a box body 50; a left lower holding member 21 for covering a left lower apex P2; a right lower holding member 22 for covering a right lower apex P3; a front upper holding member 23 for covering a front upper apex P4; and a coupling member 30 for covering a rear upper apex P5. In addition, the hoisting accessory 1 comprises: a left linear member 41 extending from the front lower holding member 10 to the coupling member 30 via the left lower holding member 21; a right linear member 42 extending from the front lower holding member 10 to the coupling member 30 via the right lower holding member 22; and a front linear member 43 extending from the front lower holding member 10 to the coupling member 30 via the front upper holding member 23. In the front lower holding member 10, an open hole 11 into which the front lower apex P1 can be inserted is formed.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a hanging tool used for the drop test of a box body.

Background Art

[0002] In order to evaluate whether a cardboard box can protect its contents from the impact received during transportation, a drop test of the box is carried out (for example, see Patent Document 1). In the drop test of the box, the box containing the contents is lifted to a predetermined height and then dropped, and the impact resistance performance of the box is evaluated based on the degree of damage to the box. In the drop test, since it is necessary to make the box collide with the floor surface from the weakest part of the box, in the case of a rectangular parallelepiped box, it will collide with the floor surface from one of the bottom vertices.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the conventional drop test of a box, when the box is placed in a bag-shaped net and lifted, it is difficult to stabilize the posture of the box, so it is difficult to make the box collide with the floor surface in an ideal posture for accurately evaluating the impact resistance performance of the box.

[0005] An object of the present invention is to solve the above-described problems and provide a hanging tool that can stably lift a box in an ideal posture when performing a drop test for evaluating the impact resistance performance of the box.

Means for Solving the Problems

[0006] To solve the aforementioned problems, the present invention is a lifting device used for drop testing of a rectangular box. The lifting device comprises a front lower support member that is placed over the front lower top of the box, a left lower support member that is placed over the left lower top adjacent to the front lower top of the box, a right lower support member that is placed over the right lower top adjacent to the front lower top of the box, a front upper support member that is placed over the front upper top adjacent to the front lower top of the box, and the box On the top plate The device comprises a connecting member that is positioned diagonally opposite the front upper top and covers the rear upper top. The lifting device also comprises a left linear member extending from the front lower holding member through the left lower holding member to the connecting member, a right linear member extending from the front lower holding member through the right lower holding member to the connecting member, and a front linear member extending from the front lower holding member through the front upper holding member to the connecting member. The connecting member is detachable from the lifting member (e.g., a hook or ring) of the drop test device. The front lower holding member has a through hole through which the front lower top of the box body can be inserted.

[0007] In the lifting device of the present invention, the box can be lifted in a position where the rear upper top of the box is at the top and the front lower top of the box is at the bottom. At this time, the front lower top of the box protrudes downward from the through hole of the front lower holding member. Furthermore, the suspension device of the present invention supports the lowest front lower top and the three tops adjacent to the front lower top, and also supports the three ridges that make up the front lower top of the box body with three linear members. Therefore, with the lifting device of the present invention, when conducting a drop test to evaluate the impact resistance performance of the box, the box can be stably lifted and dropped in an ideal position.

[0008] In the aforementioned suspension device, the front lower holding member is formed by a triangular annular member with a through hole formed in its center, and the left linear member, the right linear member, and the front linear member are connected to the three vertices of the front lower holding member, respectively, thereby the front lower top of the box body can be stably held by the front lower holding member.

[0009] In the aforementioned lifting device, the front lower holding member, the left lower holding member, the right lower holding member, and the front upper holding member are formed in a cup shape that overlaps the three outer surfaces constituting the top of the box, thereby ensuring that the top of the box is securely held by the holding members.

[0010] In the aforementioned suspension device, it is preferable to provide a length adjustment mechanism in at least one of the left linear member, the right linear member, and the front linear member. In this configuration, the length of the linear members can be adjusted to match the size of the box. Therefore, boxes of various sizes can be lifted in a position suitable for drop testing. [Effects of the Invention]

[0011] The lifting device of the present invention allows for stable lifting and dropping of a box in an ideal position when conducting drop tests to evaluate the impact resistance of the box, thereby significantly improving the workability and reproducibility of the drop test. Furthermore, the lifting device of the present invention enhances the stability of the lifted box, significantly improving the safety of the drop test. In addition, the improved accuracy of determining the impact resistance of a box through drop tests using the lifting device of the present invention allows for the design of a box with desired impact resistance while keeping material costs down. [Brief explanation of the drawing]

[0012] [Figure 1] This is a perspective view showing a box body being lifted using a lifting device according to an embodiment of the present invention. [Figure 2] This figure shows the front lower holding member, left lower holding member, right lower holding member, front upper holding member, left linear member, right linear member, and front linear member of the suspension device according to an embodiment of the present invention. [Figure 3] This figure shows a connecting member of a suspension device according to an embodiment of the present invention. [Modes for carrying out the invention]

[0013] Embodiments of the present invention will be described in detail with reference to the drawings as appropriate. As shown in FIG. 1, the lifting tool 1 of the present embodiment is a tool for lifting the box body 50 to a predetermined height in the drop test of the box body 50. In the present embodiment, a drop test in accordance with JIS Z 0200 standard or a drop test of UN inspection by the Japan Marine Equipment Inspection Association, Inc. is assumed.

[0014] The box body 50 of the present embodiment is a rectangular parallelepiped packing box made of cardboard, and the drop test is carried out with the contents packed. Note that the material, size, and contents of the box body lifted by the lifting tool of the present invention are not limited.

[0015] In the following description, the front-back, left-right direction is set for convenience in explaining the configuration of the lifting tool 1 and the box body 50 of the present embodiment in an easy-to-understand manner, and does not limit the configuration and usage state of the lifting tool 1 and the normal usage form of the box body 50.

[0016] The lifting tool 1 includes a front lower holding member 10, a left lower holding member 21, a right lower holding member 22, a front upper holding member 23, a connecting member 30, a left linear member 41, a right linear member 42, and a front linear member 43.

[0017] As shown in FIG. 2, the front lower holding member 10 is a triangular plate-like member made of resin. A triangular through hole 11 is formed in the central portion of the front lower holding member 10. That is, the front lower holding member 10 is formed in a triangular annular shape. Note that the front lower holding member 10 of the present embodiment is formed using a polyethylene resin, but the material is not limited.

[0018] Connecting holes 12 are formed at the three top portions of the front lower holding member 10, respectively. Further, an annular reinforcing linear member 13 for reinforcing the tensile strength of the front lower holding member 10 is provided on the outer surface of the front lower holding member 10. Note that the reinforcing linear member 13 of the present embodiment is a polyester rope, but the material is not limited.

[0019] As shown in Fig. 1, the front lower holding member 10 is to be placed on the outer surface of the front lower top P1 of the box body 50 when the hanging tool 1 is attached to the box body 50. The front lower holding member 10 placed on the front lower top P1 has a cup shape (a truncated triangular pyramid shape in this embodiment) that overlaps the outer surfaces of the three wall bodies (the left front side wall L1, the right front side wall R1, and the bottom plate A2) of the box body 50 that constitute the front lower top P1. Also, the three tops of the front lower holding member 10 are respectively arranged on the three ridge lines that constitute the front lower top P1. In the state where the front lower holding member 10 is placed on the front lower top P1, the front lower top P1 is inserted through the through hole 11 of the front lower holding member 10, and the front lower top P1 protrudes to the outside (downward) of the front lower holding member 10.

[0020] The left lower holding member 21 is to be placed on the left lower top P2 of the box body 50 when the hanging tool 1 is attached to the box body 50. The left lower holding member 21 has a cup shape (a triangular pyramid shape in this embodiment) that overlaps the outer surfaces of the three wall bodies (the left front side wall L1, the left rear side wall L2, and the bottom plate A2) of the box body 50 that constitute the left lower top P2. An insertion hole 21a is formed at the central part (top) of the left lower holding member 21 (see Fig. 2).

[0021] The right lower holding member 22 is to be placed on the right lower top P3 of the box body 50 when the hanging tool 1 is attached to the box body 50. The right lower holding member 22 has a cup shape (a triangular pyramid shape in this embodiment) that overlaps the outer surfaces of the three wall bodies (the right front side wall R1, the right rear side wall R2, and the bottom plate A2) of the box body 50 that constitute the right lower top P3. An insertion hole 22a is formed at the central part (top) of the right lower holding member 22 (see Fig. 2).

[0022] The front upper holding member 23 is to be placed on the front upper top P4 of the box body 50 when the hanging tool 1 is attached to the box body 50. The front upper holding member 23 has a cup shape (in this embodiment, a triangular pyramidal shape) that overlaps the outer surfaces of the three walls (left front side wall L1, right front side wall R1, and top plate A1) of the box body 50 that constitute the front upper top P4. An insertion hole 23a is formed in the central part (top) of the front upper holding member 23 (see Figure 2).

[0023] The connecting member 30 includes a retaining plate 31 that is placed over the rear upper top P5 of the box body 50 when the lifting device 1 is attached to the box body 50, and a connecting device 35.

[0024] The retaining plate 31 is cup-shaped and overlaps the outer surfaces of the three walls (left rear side wall L2, right rear side wall R2, and top plate A1) of the box body 50 that constitute the rear upper top P5. As shown in Figure 3, the retaining plate 31 in this embodiment is formed in a cup shape by combining three rectangular plate-like members so that they intersect perpendicularly to each other. An insertion hole 32 is formed in the center of each plate-like member.

[0025] The connector 35 has an upper ring 36 and three lower rings 37. The upper ring 36 is detachably attached to the lifting member F (see Figure 1) of the drop test device. In this embodiment, the upper ring 36 and each lower ring 37 are formed from a polyester belt in an annular shape, but the material is not limited.

[0026] The upper ends of each lower ring 37 are connected to the lower end of the upper ring 36. Each lower ring 37 is inserted through three through holes 32 in the retaining plate 31. The upper ring 36 is positioned above the retaining plate 31 (see Figure 1). The lower rings 37, which extend downward from the lower end of the upper ring 36, are pulled out from the outer surface of the retaining plate 31 through the through holes 32 to the inner surface of the retaining plate 31.

[0027] As shown in Figure 1, the left linear member 41 extends from the front lower holding member 10 through the left lower holding member 21 to the connecting member 30. In this embodiment, the left linear member 41 is a single member connecting the lower rope 41a and the upper belt 41b. In this embodiment, the lower rope 41a and upper belt 41b are made of polyester, but the material is not limited.

[0028] As shown in Figure 2, one end of the lower rope 41a of the left linear member 41 is inserted from the inner surface of the front lower holding member 10 into the left connecting hole 12, and is connected to the reinforcing linear member 13 on the outside of the connecting hole 12 of the front lower holding member 10. The lower rope 41a of the left linear member 41 extends from the front lower holding member 10 to the left lower holding member 21. The lower rope 41a extending from the front lower holding member 10 is inserted through the insertion hole 21a from the inner surface side of the left lower holding member 21 and extends to the outer surface side of the left lower holding member 21.

[0029] The other end of the lower rope 41a is connected to one end (lower end) of the upper belt 41b. Also, as shown in Figure 1, the other end (upper end) of the upper belt 41b is connected to the lower end of the lower ring 37 of the connecting member 30. Thus, the lower rope 41a and upper belt 41b of the left linear member 41 extend from the left lower holding member 21 to the connecting member 30. The upper belt 41b is provided with a known length adjustment mechanism 45 for adjusting the length of the belt.

[0030] The right linear member 42 extends from the front lower holding member 10 through the right lower holding member 22 to the connecting member 30. The right linear member 42 has a similar configuration to the left linear member 41, with the lower rope 42a and the upper belt 42b being connected.

[0031] The front linear member 43 extends from the front lower holding member 10 through the front upper holding member 23 to the connecting member 30. The front linear member 43 has the same configuration as the left linear member 41 and the right linear member 42, and the lower rope 43a and the upper belt 43b are connected.

[0032] The lengths of the lower rope 41a and upper belt 41b of the left linear member 41, the lower rope 42a and upper belt 42b of the right linear member 42, and the lower rope 43a and upper belt 43b of the front linear member 43 are set to match the lengths of each part of the box body 50.

[0033] In the suspension device 1, one end of the left linear member 41, the right linear member 42, and the front linear member 43 are connected to the three tops of the front lower holding member 10, respectively, and the other ends of the left linear member 41, the right linear member 42, and the front linear member 43 are connected together to the connecting member 30.

[0034] Next, the procedure for conducting a drop test using the suspension device 1 of this embodiment will be described. As shown in Figure 1, when the front lower holding member 10 is placed over the front lower top P1 of the box body 50, the front lower top P1 (the triangular pyramidal part) protrudes outward from the through hole 11 of the front lower holding member 10. Furthermore, the left lower holding member 21, the right lower holding member 22, and the front upper holding member 23 are placed over the left lower top P2, the right lower top P3, and the front upper top P4 of the box body 50, respectively. In addition, the holding plate 31 of the connecting member 30 is placed over the rear upper top P5 of the box body 50.

[0035] When the suspension device 1 is attached to the box body 50 in this manner, the left linear member 41 is positioned on the ridge line between the front lower top P1 and the left lower top P2. The right linear member 42 is positioned on the ridge line between the front lower top P1 and the right lower top P3. The front linear member 43 is positioned on the ridge line between the front lower top P1 and the front upper top P4.

[0036] In the left linear member 41, the portion between the left lower holding member 21 and the connecting member 30 is positioned on the outer surface of the left rear side wall L2 of the box body 50. Similarly, in the right linear member 42, the portion between the right lower holding member 22 and the connecting member 30 is positioned on the outer surface of the right rear side wall R2 of the box body 50. Furthermore, in the front linear member 43, the portion between the front upper holding member 23 and the connecting member 30 is positioned on the outer surface of the top plate A1 of the box body 50.

[0037] After attaching the lifting device 1 to the box body 50, the upper ring 36 of the connecting member 30 is hooked onto the lifting member F (an L-shaped hook in this embodiment) of the drop test device. Then, the lifting member F is raised, and the box body 50 is lifted together with the lifting device 1. At this time, the box body 50 is lifted from the rear upper top P5 side, and is in a tilted position such that the rear upper top P5 is at the top and the front lower top P1 is at the bottom.

[0038] After the box 50 is lifted to a predetermined height, the lifting member F is rotated around its horizontal axis, causing the connecting member 30 to detach from the lifting member F and the box 50 to fall to the floor. At this time, the box 50 will hit the floor with its front lower top P1. The impact resistance performance of the box 50 is then evaluated based on the degree of damage to the box 50.

[0039] With the lifting device 1 described above, as shown in Figure 1, the box body 50 can be lifted to a predetermined height in a position where the rear upper top P5 of the box body 50 is at the top and the front lower top P1 of the box body 50 is at the bottom. At this time, the front lower top P1 of the box body 50 protrudes outward from the through hole 11 of the front lower holding member 10. In this embodiment, the orientation of the box 50 can be adjusted by adjusting the lengths of the left linear member 41, the right linear member 42, and the front linear member 43 according to the size and weight of the box 50.

[0040] Furthermore, in the suspension device 1 of this embodiment, the front lower holding member 10, the left lower holding member 21, the right lower holding member 22, and the front upper holding member 23 are cup-shaped (shape that conforms to the triangular pyramidal shape of the top of the box body 50), so the box body 50 can be held securely. Furthermore, in the suspension device 1 of this embodiment, the three ridges constituting the front lower top P1 of the box body 50 are supported by the left linear member 41, the right linear member 42, and the front linear member 43.

[0041] As a result, the lifting device 1 of this embodiment can stably lift the box 50 in a position where the front lower top P1 of the box 50 is at its lowest point. Therefore, the lifting device 1 of this embodiment can lift and drop the box 50 in an ideal position when conducting a drop test to evaluate the impact resistance performance of the box 50.

[0042] In the drop test using the lifting device 1 of this embodiment, workability and reproducibility can be greatly improved. In addition, since the stability of the box body 50 lifted using the lifting device 1 is increased, the safety of the drop test can be greatly improved. Furthermore, by improving the accuracy of determining the impact resistance performance of the box 50 through drop tests using the suspension device 1 of this embodiment, it becomes possible to design a box 50 with the desired impact resistance performance while keeping material costs down.

[0043] Although embodiments of the present invention have been described above, the present invention is not limited to the embodiments described above, and can be modified as appropriate without departing from its spirit. In the suspension device 1 of this embodiment, as shown in Figure 1, the left linear member 41, the right linear member 42, and the front linear member 43 are constructed by connecting a rope and a belt, but the linear members may also be constructed from a single rope or a single belt. Furthermore, the linear members of the present invention are not limited to ropes or belts, and for example, metal wires may be used.

[0044] In this embodiment, the left linear member 41, the right linear member 42, and the front linear member 43 are provided with a length adjustment mechanism 45, but it is not necessary to provide a length adjustment mechanism 45 for all of the right linear member 42 and the front linear member 43.

[0045] In this embodiment, the front lower holding member 10 is provided with a reinforcing linear member 13, but the reinforcing linear member 13 is not required. In this case, the left linear member 41, the right linear member 42, and the front linear member 43 are directly connected to each connecting hole 12 of the front lower holding member 10.

[0046] In this embodiment, the connector 35 of the connecting member 30 is made up of a ring formed by multiple belts, as shown in Figure 3, but the connector 35 may also be made up of a metal ring. [Explanation of Symbols]

[0047] 1. Lifting device 10 Front lower holding member 11 Through hole 12 Connection hole 13 Reinforcing linear members 21 Lower left retaining member 21a Through hole 22 Lower right retaining member 22a Through hole 23 Front upper holding member 23a Through hole 30 Connecting member 31 Holding plate 32 Through hole 35 Connectors 36 Upper ring 37 Lower ring 41 Left linear member 41a Lower rope 41b Upper belt 42 Right linear member 42a Lower rope 42b Upper belt 43 Frontal members 43a Lower rope 43b Upper belt 45 Length adjustment mechanism 50 box body F Lifting member P1 Anterior lower apex P2 Lower left top P3 Lower right top P4 anterior superior apex P5 posterior superior apex A1 top plate A2 bottom plate L1 Left front side wall L2 Left rear side wall R1 Right front side wall R2 Right rear side wall

Claims

1. A lifting device used for drop tests of rectangular boxes, A front lower holding member that covers the front lower top of the box body, A left lower holding member is placed over the left lower top portion adjacent to the front lower top portion of the box body, A right lower holding member is placed over the right lower top portion adjacent to the front lower top portion of the box body, A front upper holding member is placed over the front upper top portion adjacent to the front lower top portion of the box body, A connecting member that is placed diagonally across the front upper top of the top plate of the box body and covers the rear upper top, A left linear member extending from the front lower holding member through the left lower holding member to the connecting member, A right linear member extending from the front lower holding member through the right lower holding member to the connecting member, It comprises a front linear member extending from the front lower holding member through the front upper holding member to the connecting member, The aforementioned connecting member is detachable from the lifting member of the drop test device. The lifting device is characterized in that the front lower holding member has a through hole formed therein that allows the front lower top portion of the box body to be inserted through it.

2. A suspension device according to claim 1, The aforementioned front lower holding member is a triangular annular member with the through hole formed in its central part. A suspension device characterized in that the left linear member, the right linear member, and the front linear member are connected to the three tops of the front lower holding member, respectively.

3. A suspension device according to claim 1, The hanging device is characterized in that the front lower holding member, the left lower holding member, the right lower holding member, and the front upper holding member are formed in a cup shape that overlaps the three outer surfaces constituting the top of the box body.

4. A suspension device according to claim 1, A suspension device characterized in that at least one of the left linear member, the right linear member, and the front linear member is provided with a length adjustment mechanism.

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