JP2022075354A - Packaging device - Google Patents

Abstract

To provide a packaging device that is compatible with both of positively preventing a positional deviation of a bottom plate arranged on a pallet and making the bottom plate and the pallet separately replaceable.SOLUTION: A packaging device 1 comprises a pallet 2 that has a top plate portion 2a and a concave portion 2b downwardly recessed relatively to an upper surface of the top plate portion 2a, a bottom plate 3 that is arranged on the top plate portion 2a, and a restriction member 4 that is attached to the pallet 2 and prevents the movement of the bottom plate 3. The restriction member 4 has an engagement portion to be engaged with the concave portion 2b. The restriction member 4 can be removed from the pallet 2.SELECTED DRAWING: Figure 6

Description

The present disclosure relates to packaging equipment.

The following Patent Document 1 describes a pallet used for transporting an article, which is detachably attached to a pallet body on which the article is placed and the pallet body, and is mounted upward with respect to the pallet body. A device including a plurality of side support members for laterally supporting an article placed on the pallet body in a state of being mounted in a protruding posture is disclosed.

Japanese Unexamined Patent Publication No. 2009-406191

A floor plate such as a veneer plate may be placed on the pallet, and the packaged object may be mounted on the floor plate. In such a case, the position of the floor plate may shift due to a horizontal impact during physical distribution transportation. For example, it is conceivable to fix the floor plate to the pallet using double-sided tape or nails, but if only one of the floor plate and the pallet is damaged, it cannot be replaced individually and the replacement cost is high. The inconvenience of becoming.

This disclosure is made in order to solve the above-mentioned problems, and it is necessary to surely prevent the position shift of the floor plate arranged on the pallet and to make the floor plate and the pallet exchangeable separately. It is an object of the present invention to provide a packing device capable of achieving both.

The packing device according to the present disclosure includes a pallet having a top plate portion, a recess recessed downward with respect to the upper surface of the top plate portion, a floor plate arranged on the top plate portion, and a floor plate attached to the pallet. The restraining member includes an engaging member that engages with the recess, and the restraining member can be removed from the pallet.

According to the present disclosure, it is possible to provide a packing device capable of reliably preventing misalignment of a floor plate arranged on a pallet and making it possible to replace the floor plate and the pallet separately. It will be possible.

It is a perspective view of the packing apparatus according to Embodiment 1. FIG. It is a perspective view of the packing apparatus according to Embodiment 1. FIG. FIG. 3 is a perspective view of a restraining member included in the packing device according to the first embodiment. It is a perspective view of the pallet provided in the packing device according to Embodiment 1. FIG. FIG. 3 is a perspective view showing a state in which the restraining member shown in FIG. 3 is attached to the pallet shown in FIG. It is a top view of the packing apparatus according to Embodiment 1. FIG. FIG. 3 is a perspective view of a restraining member included in the packing device according to the second embodiment. FIG. 3 is a perspective view of a pallet and a restraining member included in the packing device according to the second embodiment. It is a top view of the packing device according to Embodiment 2. It is a perspective view which shows the example of the floor plate and the restraining member provided in the packing device by Embodiment 3. FIG. It is a top view of the packing device according to Embodiment 3. It is a perspective view which shows the other example of the floor plate and the restraining member provided in the packing device according to Embodiment 3. FIG. It is a perspective view of the restraining member provided in the packing device according to Embodiment 4. FIG. It is a top view of the packing device according to Embodiment 4.

Hereinafter, embodiments will be described with reference to the drawings. The common or corresponding elements in each figure are designated by the same reference numerals to simplify or omit the description. When the angle is referred to in the present disclosure, when there is a superior angle and an obtuse angle in which the sum is 360 °, in principle, the angle of the inferior angle is referred to, and there are an acute angle and an obtuse angle in which the sum is 180 °. In some cases, it refers to an acute angle in principle.

Embodiment 1.
1 and 2 are perspective views of the packing device 1 according to the first embodiment. Note that FIG. 2 is a diagram in which a part of the packing device 1 is cut out so that the inside of the packing device 1 can be seen. FIG. 3 is a perspective view of the restraining member 4 included in the packing device 1 according to the first embodiment. FIG. 4 is a perspective view of the pallet 2 included in the packing device 1 according to the first embodiment. FIG. 5 is a perspective view showing a state in which the restraining member 4 shown in FIG. 3 is attached to the pallet 2 shown in FIG. FIG. 6 is a top view of the packing device 1 according to the first embodiment. As a general rule, in the following description, the direction of each member is specified assuming that the packing device 1 is placed on a horizontal plane.

As shown in FIG. 2, the packing device 1 according to the first embodiment packs a plurality of packed objects 90. The packaged object 90 in the illustrated example is a compressor that compresses the refrigerant in the air conditioner. It goes without saying that the packaged object in the present disclosure is not limited to the compressor, and may be any product. Further, the number of items to be packed by one packing device 1 is not particularly limited.

The packing device 1 includes a pallet 2, a floor plate 3, and a restraining member 4. The pallet 2 is made of resin, that is, plastic. The floor plate 3 is laid on the pallet 2. The floor plate 3 may be made of wood such as plywood, plastic, or metal, for example. In the present embodiment, the pressure due to the load of the packaged object 90 can be equalized by the floor plate 3, so that damage to the pallet 2 can be reliably suppressed. As shown in FIG. 6, in top view, the pallet 2 and the floor plate 3 have a substantially rectangular or square outer shape. In top view, the outer shape of the floor plate 3 is slightly smaller than the outer shape of the pallet 2.

The restraining member 4 is attached to the pallet 2. The restraining member 4 has a function of preventing the floor plate 3 from moving in the horizontal direction with respect to the pallet 2. The restraining member 4 may be made of plastic, metal, wood, or paper such as corrugated cardboard.

As shown in FIG. 4, the pallet 2 has a top plate portion 2a and a recess 2b recessed downward with respect to the upper surface of the top plate portion 2a. The upper surface of the top plate portion 2a is horizontal. The floor plate 3 is arranged on the top plate portion 2a. The load of the packaged object 90 acts on the upper surface of the top plate portion 2a via the floor plate 3.

As shown in FIG. 3, the restraining member 4 has an engaging portion 4a and a protruding portion 4b protruding upward from the upper surface of the engaging portion 4a. As shown in FIG. 5, the engaging portion 4a is inserted into and engaged with the recess 2b of the pallet 2. That is, the outer peripheral portion of the engaging portion 4a is in contact with the inner peripheral portion of the recess 2b. As a result, the restraining member 4 is mounted on the pallet 2. The restraining member 4 can be removed from the pallet 2 by pulling out the engaging portion 4a from the recess 2b. With the restraining member 4 attached to the pallet 2, the protruding portion 4b protrudes above the position of the upper surface of the top plate portion 2a. As shown in FIG. 6, the protrusion 4b is in contact with the floor plate 3 to prevent the floor plate 3 from moving in the horizontal direction with respect to the pallet 2.

In the present embodiment, by providing the restraining member 4, it is possible to reliably prevent the floor plate 3 from moving in the horizontal direction with respect to the pallet 2. Therefore, even when the packing device 1 is subjected to a horizontal impact during physical distribution transportation, it is possible to reliably prevent the displacement of the floor plate 3 from occurring. Further, since it is not necessary to directly fix the floor plate 3 to the pallet 2, when only one of the floor plate 3 and the pallet 2 is damaged, only the damaged one can be individually replaced. Therefore, the cost at the time of replacement is reduced. Further, since the restraining member 4 is removable from the pallet 2, even if only one of the restraining member 4 and the pallet 2 is damaged, only the damaged one can be individually replaced.

It is desirable that the engaging portion 4a has a shape that does not move as much as possible in the recess 2b. For example, it is desirable that the cross-sectional shape of the engaging portion 4a cut in the horizontal plane corresponds to the cross-sectional shape of the internal space of the recess 2b cut in the horizontal plane. Further, it is desirable that the restraining member 4 is mounted in the recess 2b so that the upper surface of the engaging portion 4a is located on the same plane as the upper surface of the top plate portion 2a.

As shown in FIG. 4, the pallet 2 has a plurality of leg portions 2c protruding downward from the top plate portion 2a. When the packing device 1 is placed on the floor surface, the lower end of the leg portion 2c comes into contact with the floor surface, so that a space is formed between the floor surface and the lower surface of the top plate portion 2a. Since the fork of the forklift can be inserted into the space, the packing device 1 can be easily carried by the forklift.

In the illustrated example, the pallet 2 is provided with nine legs 2c arranged in a matrix of 3 rows × 3 columns in a top view. The four legs 2c are arranged at the four corners of the pallet 2. Further, the leg portions 2c are arranged in the middle of the two adjacent corners of the pallet 2 and in the center of the top plate portion 2a.

Each of the plurality of legs 2c has a hollow portion. The hollow portion is a recess 2b. That is, the inner wall of the recess 2b is formed by the leg portion 2c. Such a leg portion 2c has a shape like a bottomed container having an open upper surface, and the inside of the container corresponds to a recess 2b. That is, the shape of the recess 2b is similar to the shape of the leg portion 2c. Such a leg portion 2c can be integrally molded with the top plate portion 2a by, for example, blow molding.

The legs 2c have sufficient strength and size so as to reliably support the weight of the packing device 1. Therefore, the inner wall of the recess 2b also has sufficient strength, and the size of the recess 2b is also sufficiently large. In the present embodiment, by attaching the restraining member 4 to the recess 2b having sufficient strength and size, the restraining member 4 can be more reliably fixed to the pallet 2 with sufficiently high strength. Will be. As a result, the misalignment of the floor plate 3 can be prevented more reliably. Further, by using the recess 2b formed by the leg portion 2c, there is an advantage that it is not necessary to newly form the recess 2b for attaching the restraining member 4.

In the present embodiment, the recess 2b is formed in a tapered shape so that the cross-sectional area obtained by cutting the internal space of the recess 2b in a horizontal plane gradually decreases downward. Therefore, the outer shape of the cross section of the leg portion 2c cut in the horizontal plane also gradually decreases downward. When a plurality of pallets 2 having the same shape are stacked, the legs 2c of the upper pallet 2 are nested by inserting them into the recesses 2b of the lower pallet 2. Therefore, since the height of the plurality of stacked pallets 2 can be lowered, there is an advantage that the storage space of the pallets 2 becomes small.

In the present embodiment, since the cross-sectional area obtained by cutting the internal space of the recess 2b in a horizontal plane is formed in a tapered shape in which the cross-sectional area gradually decreases downward, the inner peripheral portion of the recess 2b and the engaging portion 4a are formed. It is possible to more reliably suppress the formation of a gap between the outer peripheral portion and the outer peripheral portion. Therefore, the frictional force between the inner peripheral portion of the recess 2b and the outer peripheral portion of the engaging portion 4a makes it possible to more reliably fix the restraining member 4 to the pallet 2 with sufficient strength. As a result, the misalignment of the floor plate 3 can be prevented more reliably.

As shown in FIG. 7, in the restraining member 4 in the present embodiment, the cross-sectional area of the engaging portion 4a cut in the horizontal plane is larger than the cross-sectional area of the protruding portion 4b cut in the horizontal plane. As described above, since the engaging portion 4a is relatively large, the movement of the floor plate 3 can be reliably prevented even when the restraining member 4 receives a strong force from the floor plate 3. Further, since the protruding portion 4b is relatively small, it is possible to more reliably suppress the protruding portion 4b from becoming an obstacle during the packing work or the unpacking work. In the illustrated example, the cross-sectional shape obtained by cutting the internal space of the recess 2b in a horizontal plane and the cross-sectional shape obtained by cutting the engaging portion 4a in a horizontal plane are substantially rectangular or square. These cross-sectional shapes are not particularly limited, and may be, for example, other polygons, circles, ellipses, or the like.

As shown in FIGS. 3 and 6, the protrusion 4b in the present embodiment has an L-shape in a top view. By contacting the L-shaped protrusion 4b with the corner of the floor plate 3, the movement of the floor plate 3 can be prevented more reliably. In the illustrated example, the protruding portion 4b protrudes upward from two adjacent sides of the four sides of the rectangle of the engaging portion 4a. The protruding portion 4b protrudes in a plate shape perpendicular to the horizontal plane.

The height H of the protrusion 4b is preferably about the same as the thickness of the floor plate 3. For example, the height H of the protrusion 4b may be in the range of 0.8 times to 1.5 times the thickness of the floor plate 3. The height H of the protruding portion 4b is a vertical distance from the upper surface of the engaging portion 4a to the upper end of the protruding portion 4b.

As shown in FIGS. 5 and 6, the packing device 1 of the present embodiment includes four restraining members 4 attached to recesses 2b at the four corners of the pallet 2. As a result, the protruding portion 4b of the restraining member 4 comes into contact with all four corners of the floor plate 3, so that the movement of the floor plate 3 can be prevented more reliably. However, it is not always necessary to attach the restraining member 4 to all the recesses 2b at the four corners of the pallet 2. For example, even when the restraining member 4 is attached only to the recesses 2b at the two diagonal corners of the pallet 2, it is possible to prevent the floor plate 3 from moving in any direction in the horizontal plane. ..

In the present embodiment, the restraining member 4 is not attached to the remaining five recesses 2b other than the recesses 2b at the four corners of the pallet 2. As a modification, the restraining member 4 may be attached to the recesses 2b other than the recesses 2b at the four corners of the pallet 2. For example, the restraining member 4 is attached to the recess 2b at the center of each of the four sides of the pallet 2, and the protruding portion protruding upward from the engaging portion 4a of the restraining member 4 contacts the center of each of the four sides of the floor plate 3. It may be configured as follows.

As shown in FIG. 2, the packing device 1 of the present embodiment packs the items to be packed 90 in a state of being stacked in two stages on one pallet 2. In the illustrated example, a total of 32 packed objects 90 including the 16 packed objects 90 in the first stage and the 16 packed objects 90 in the second stage are stacked on one pallet 2. ..

The packing device 1 of the present embodiment further includes a first internal holding material 5, a second internal holding material 6, a floor plate 7, a side holder 8, a lid 9, and a band 10. The first internal holding material 5 and the second internal holding material 6 may be made of, for example, corrugated cardboard or other paper. The floor plate 7 may be, for example, a veneer plate. The side holder 8 may be made of corrugated cardboard. The lid 9 may be made of resin, for example. The band 10 may be, for example, a polypropylene band.

The first internal holding material 5 is arranged on the floor plate 3. The upper surface of the first internal holding material 5 may be formed with a recess into which the lower portion of the packaged object 90 fits. The 16 items to be packed 90 in the first stage are placed on the first internal holding material 5 on the floor plate 3. The second internal holding material 6 is arranged on the 16 packed objects 90 in the first stage. In the illustrated example, the second internal holding material 6 has a tubular portion that engages with the upper part of the packaged object 90. A floor plate 7 is arranged on the second internal holding material 6. Another first internal holding material 5 is arranged on the floor plate 7.

On the first internal holding material 5 on the floor plate 7, 16 items to be packed 90 in the second stage are placed. Another second internal holding material 6 is arranged on the 16 packed objects 90 in the second stage. A lid 9 is arranged on the second internal holding material 6. The side holder 8 is arranged so as to cover the periphery of the packaged object 90, the second internal holding material 6, the first internal holding material 5, and the like on the pallet 2 from the outside. The pallet 2 and the lid 9 are fastened with the band 10. In FIG. 2, the restraining member 4 is not shown.

As shown in FIG. 4, the pallet 2 of the present embodiment has a peripheral wall portion 2d protruding upward from the outer edge of the top plate portion 2a. The lower end portion of the side surface holder 8 is arranged so as to be in contact with the upper surface of the top plate portion 2a and the inner wall surface of the peripheral wall portion 2d. As shown in FIG. 6, a gap 11 is formed between the peripheral wall portion 2d and the protruding portion 4b. A part of the lower end portion of the side surface holder 8 is arranged in the gap 11 between the peripheral wall portion 2d and the protruding portion 4b.

Assuming that the floor plate 3 is not provided with the restraining member 4 and the floor plate 3 is displaced in the horizontal direction due to a horizontal impact during physical distribution transportation, there is a gap between the edge portion of the floor plate 3 and the inner wall surface of the peripheral wall portion 2d. The lower end of the side holder 8 is pinched by a strong force. As a result, the side holder 8 may be damaged such as deformed or torn, and the packing quality may be deteriorated. Further, at the time of unpacking, the lower end portion of the side surface holder 8 sandwiched between the floor plate 3 and the peripheral wall portion 2d by a strong force cannot be smoothly removed, which may reduce workability. In contrast to this, in the present embodiment, since the restraining member 4 can surely prevent the position shift of the floor plate 3, it is possible to surely avoid the above-mentioned adverse effects. The pallet 2 in the present disclosure may not have the peripheral wall portion 2d described above.

Embodiment 2.
Next, the second embodiment will be described with reference to FIGS. 7 to 9, but the differences from the above-described first embodiment will be mainly described, and the common description will be simplified or omitted. Further, the same reference numerals are given to the elements common to or corresponding to the above-mentioned elements.

FIG. 7 is a perspective view of the restraining member 4 included in the packing device 12 according to the second embodiment. FIG. 8 is a perspective view of the pallet 2 and the restraining member 4 included in the packing device 12 according to the second embodiment. FIG. 9 is a top view of the packing device 12 according to the second embodiment.

The packing device 12 according to the second embodiment is different from the packing device 1 according to the first embodiment in the shape of the protruding portion 4c of the restraining member 4 and the shape of the corner portion of the floor plate 3. As shown in FIG. 7, the restraining member 4 in the present embodiment includes a protruding portion 4c instead of the protruding portion 4b in the first embodiment. The protruding portion 4c projects upward from the upper surface of the engaging portion 4a. The protrusion 4c has a triangular columnar shape. The protruding portion 4c projects upward from one corner of the rectangular engaging portion 4a. Of the three side surfaces of the protruding portion 4c, two side surfaces are continuous with respect to the side surface of the engaging portion 4a, and the remaining one side surface is slanted with respect to the side surface of the engaging portion 4a.

As shown in FIG. 8, a restraining member 4 is attached to each of the recesses 2b at the four corners of the pallet 2. Each of the restraining members 4 is arranged so that the protruding portion 4c is located at the corner of the pallet 2. One side surface of the protrusion 4c is slanted with respect to the side of the pallet 2 and faces the center of the pallet 2.

As shown in FIG. 9, the floor plate 3 has a chamfered portion 3a. The chamfered portion 3a is a portion where the corner portion of the floor plate 3 is chamfered diagonally with respect to the side of the floor plate 3. That is, the chamfered portion 3a has an edge portion extending in an oblique direction with respect to the side of the floor plate 3. In the present embodiment, the one side surface of the protruding portion 4c is in contact with the chamfered portion 3a, so that the floor plate 3 is prevented from moving in the horizontal direction with respect to the pallet 2. As a result, the same effect as that of the first embodiment can be obtained.

Embodiment 3.
Next, the third embodiment will be described with reference to FIGS. 10 to 12, but the differences from the above-described first embodiment will be mainly described, and the common description will be simplified or omitted. Further, the same reference numerals are given to the elements common to or corresponding to the above-mentioned elements.

FIG. 10 is a perspective view showing an example of a floor plate 3 and a restraining member 14 included in the packing device 13 according to the third embodiment. FIG. 11 is a top view of the packing device 13 according to the third embodiment. FIG. 12 is a perspective view showing another example of the floor plate 3 and the restraining member 14 included in the packing device 13 according to the third embodiment.

As shown in these figures, the packing device 13 according to the third embodiment includes a restraining member 14 instead of the restraining member 4 according to the first embodiment. The restraining member 14 is fixed to the lower surface of the floor plate 3. The restraining member 14 is inserted into and engaged with the recess 2b of the pallet 2. The entire restraining member 14 corresponds to the engaging portion 4a in the first embodiment. The restraining member 14 in the illustrated example has a rectangular parallelepiped shape. The method of fixing the restraining member 14 to the floor plate 3 is not particularly limited, and for example, an adhesive, double-sided tape, nails, or other fixing means can be used.

In the present embodiment, the restraining member 14 fixed to the floor plate 3 engages with the recess 2b of the pallet 2, so that the floor plate 3 is prevented from moving in the horizontal direction with respect to the pallet 2. As a result, the same effect as that of the first embodiment can be obtained.

The number of restraining members 14 fixed to the floor plate 3 is not particularly limited. In the example of FIG. 10, four restraining members 14 are fixed to the four corners of the floor plate 3. The four restraining members 14 engage with the recesses 2b at the four corners of the pallet 2. In the example of FIG. 11, six restraining members 14 are fixed to the floor plate 3. In the example of FIG. 12, nine restraining members 14 are fixed to the floor plate 3 corresponding to all nine recesses 2b of the pallet 2. As the number of the restraining members 14 increases, it becomes possible to more strongly prevent the floor plate 3 from moving.

Embodiment 4.
Next, the fourth embodiment will be described with reference to FIGS. 13 and 14, but the differences from the above-described first embodiment will be mainly described, and the common description will be simplified or omitted. Further, the same reference numerals are given to the elements common to or corresponding to the above-mentioned elements.

FIG. 13 is a perspective view of the restraining member 4 included in the packing device 15 according to the fourth embodiment. FIG. 14 is a top view of the packing device 15 according to the fourth embodiment. The packing device 15 according to the fourth embodiment is different from the packing device 1 according to the first embodiment in that the shape of the protruding portion 4d of the restraining member 4 is different and the floor plate 3 has a hole 3b.

As shown in FIG. 13, the restraining member 4 in the present embodiment includes a protruding portion 4d instead of the protruding portion 4b in the first embodiment. The protruding portion 4d projects upward from the center of the upper surface of the engaging portion 4a. The protrusion 4d has a square columnar shape.

As shown in FIG. 14, a restraining member 4 is attached to each of the recesses 2b at the four corners of the pallet 2. In the floor plate 3, a quadrangular hole 3b corresponding to the shape of the protruding portion 4d is formed at a position corresponding to the protruding portion 4d of each restraining member 4. The protruding portion 4d is inserted into the hole 3b of the floor plate 3. By contacting the inner peripheral portion of the hole 3b with the outer peripheral portion of the protruding portion 4d, the floor plate 3 is prevented from moving in the horizontal direction with respect to the pallet 2. As a result, the same effect as that of the first embodiment can be obtained.

The shape of the protruding portion 4d is not limited to a quadrangular prism, and may be, for example, a cylindrical column, an elliptical column, or a polygonal column other than the quadrangular column. Correspondingly, the shape of the hole 3b may be a polygon other than a circle, an ellipse, or a quadrangle.

The number and position of the restraining members 4 to be installed are not limited to the illustrated examples. The number and position of the holes 3b can be changed accordingly. For example, even when only one restraining member 4 is attached to the recess 2b in the center of the pallet 2 and only one hole 3b is formed in the center of the floor plate 3, the position shift of the floor plate 3 is prevented. It is possible.

In the illustrated example, the hole 3b penetrates from the lower surface to the upper surface of the floor plate 3. Instead of such an example, the hole 3b may be opened only on the lower surface of the floor plate 3, and the hole 3b may not be opened on the upper surface of the floor plate 3. That is, the hole 3b may not penetrate to the upper surface of the floor plate 3.

Of the plurality of embodiments described above, two or more that can be combined may be combined and carried out.

1 Packing device, 2 Pallet, 2a Top plate, 2b Recess, 2c Leg, 2d Peripheral wall, 3 Floor plate, 3a Chamfer, 3b Hole, 4 Stopping member, 4a Engagement, 4b Protrusion, 4c Protrusion, 4d projecting part, 5 1st internal holding material, 6 2nd internal holding material, 7 floor plate, 8 side holder, 9 lid, 10 band, 11 gap, 12 packing device, 13 packing device, 14 restraint member, 15 packing device, 90 Items to be packed

Claims (10)

A pallet having a top plate portion and a recess recessed downward with respect to the upper surface of the top plate portion.
The floor plate placed on the top plate and
A restraining member attached to the pallet to prevent the floor plate from moving,
Equipped with
The restraining member has an engaging portion that engages with the recess.
A packing device in which the restraining member can be removed from the pallet. The pallet has a plurality of legs protruding downward from the top plate portion, and the pallet has a plurality of legs.
The packing device according to claim 1, wherein each of the plurality of legs has a hollow portion that serves as the recess. The packing device according to claim 1 or 2, wherein the cross-sectional area obtained by cutting the internal space of the recess in a horizontal plane gradually decreases downward. The restraining member has a protruding portion protruding above the position of the upper surface of the top plate portion from the engaging portion.
The packing device according to any one of claims 1 to 3, wherein the protruding portion is in contact with the floor plate to prevent the floor plate from moving. The packing device according to claim 4, wherein the cross-sectional area of the engaging portion cut in a horizontal plane is larger than the cross-sectional area of the protruding portion cut in a horizontal plane. The packing device according to claim 4 or 5, wherein the protruding portion has an L shape in contact with a corner of the floor plate when viewed from above. The floor plate has a chamfered portion whose corner portion is chamfered diagonally with respect to the side of the floor plate.
The packing device according to claim 4 or 5, wherein the protruding portion is in contact with the chamfered portion. The floor plate has holes and
The packing device according to claim 4 or 5, wherein the protrusion is inserted into the hole of the floor plate. The packing device according to any one of claims 1 to 3, wherein the restraining member is fixed to the lower surface of the floor plate. The packing device according to any one of claims 1 to 9, further comprising the plurality of restraining members.

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