JP2003165543A - Transporting pallet - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a light and sturdy transporting pallet which can be manufactured, assembled and disassembled easily. <P>SOLUTION: This transporting pallet comprises (a) a top face panel 11 comprising a metal strip panel having a cross section where (n+1) protrusive parts 11a and n (n is a natural number) recessive parts 11b are arranged alternatively, and (b) a supporting member 13 which is folded and rolled inward at least four parts in the longitudinal direction of the face panel having a roughly square side face, and which is fitted with a reinforcing member 14 having a U shaped cross section on the protrusive part between the top and bottom strip panels at both ends and at least at one part somewhere between them in the longitudinal direction. (c) at the bottom of a plurality of the top face panels 11, a plurality of the supporting members 13 are crossed to be connected at right angles. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transportation pallet which is lightweight, has excellent durability, and can be easily assembled.

[0002]

2. Description of the Related Art Wooden pallets have been widely used as conventional transportation pallets because the materials are easily available and processed. Wooden pallets are likely to be deformed or damaged by repeated loading of heavy objects, and recently, from the viewpoint of environmental problems, the use of metal pallets such as steel plates has become widespread. Such a metal pallet has strength, but becomes heavy, and processing tends to be complicated. Conventionally, various ideas have been made in terms of cost, weight, and strength, and for example, the following technologies are known. (I) In a conventional metal pallet, a vertical member 41 and a horizontal member 43 made of steel having a plurality of U-shaped cross sections are arranged in a frame shape as shown in FIG. 7, and the vertical member 41 and the horizontal member 43 are in contact with each other. A frame 49 is formed by welding and fixing parts, and a pallet 50 for transportation
I was trying. (Ii) In Japanese Unexamined Patent Publication No. 11-157540, an upper surface of a face plate integrally formed of polypropylene or recycled polypropylene by an injection molding method or a press molding becomes a concave portion having an upper surface opened upward and a lower surface side is fitted in the concave portion. It is possible to hang a plurality of downwardly protruding legs,
There is described a transportation pallet in which both end portions of a fork in the insertion / removal direction and fork insertion portions that open downward are formed between leg portions on the lower surface side of a face plate so as to be vertically aligned and stacked. (Iii) In Utility Model Registration No. 3053964, a steel plate is integrally molded in a three-convex two-concave shape, and both side edges are bent inwardly in an L shape to form a tight end, and one side has a cutout. And a prism that is integrally molded to have concave recesses on both the upper and lower sides of the corresponding surface of the recess,
A pallet is described in which two face plates corresponding to each other in parallel are fitted into and combined with the prism by the recessed notch, and are joined by spot welding.

[0003]

The above-mentioned conventional transportation pallets have the following problems. (1) The conventional metal transportation pallet shown in FIG. 7 has a problem that the weight is large, but the strength is poor, and the number of welded portions is large, which requires a great manufacturing labor and a large welding device. there were. (2) The transportation pallet described in JP-A No. 11-157540 lacks durability because it is made of a synthetic resin such as polypropylene, and is flammable, so that it emits toxic gas during a fire, resulting in a special digestion. There was a problem that equipment was required. (3) In the pallet described in Utility Model Registration No. 3053964, the load applied between the two face plates is supported by the complicated-shaped prism having concave recesses on the upper and lower sides. Stress is easy to concentrate on this cutout part,
In addition to lacking in durability, there is a problem in that manufacturing this prism requires a lot of man-hours and is not economical. The present invention has been made to solve the above-mentioned problems, and is a lightweight pallet for transportation which is easy to manufacture and assemble, as well as having required durability and excellent safety during handling and fire. The purpose is to provide.

[0004]

According to a first aspect of the present invention, there is provided a transportation pallet having a sectional shape in which (a) (n + 1) convex portions and n (n is a natural number) concave portions are alternately arranged. An upper face plate composed of a metal strip face plate formed with (b)
Convex portions between the upper and lower strip-shaped face plates at both longitudinal ends and at least one intermediate portion formed by bending and winding inward at four places in the longitudinal direction of the strip-shaped face plate and forming side faces in a substantially square shape. A support member having a reinforcing member having a U-shaped cross section fitted in a curved portion, and (c) a plurality of the support members being orthogonally joined to the lower portions of the plurality of upper face plates. It is characterized by

The transport pallet according to claim 2 is
(A) An upper face plate made of a metal band face plate having a cross-sectional shape in which (n + 1) convex portions and n concave portions (n is a natural number) are alternately arranged; ) A supporting member in which reinforcing members having a U-shaped cross section are fitted to the convex portions between the upper and lower strip-shaped face plates at both ends in the longitudinal direction of the strip-shaped face plates that are vertically opposed to each other, and at least at one position in the intermediate portion. And (c) a plurality of the support members are orthogonally joined to the lower portions of the plurality of upper face plates.

With the above structure, the following effects can be obtained. (1) Since the strip-shaped face plate has a zigzag cross section in which a plurality of (n + 1 (n is a natural number)) convex portions and a plurality (n) concave portions are alternately arranged, the strip-shaped face plate is formed by the convex portions and the concave portions. By increasing the resistance against bending of the strip-shaped face plate in the longitudinal direction, rigidity that does not bend even when a heavy object is loaded can be obtained, and stability in pallet transportation can be improved. (2) Since it has a zigzag cross section, it can be made lighter in weight relative to the entire volume, and is easy to disassemble when moving an empty pallet and has excellent handleability. (3) Since the upper face plate and the band-shaped face plate forming the support member are formed of a metal plate, they are excellent in safety without generating toxic gas even in the event of a fire. (4) Since the strip-shaped face plate can be integrally formed from the metal plate by press molding, roll molding, or the like, manufacturing and assembly can be easily performed, and the transportation pallet can be manufactured at low cost. (5) A pair of convex portions at both ends of a plurality of convex portions formed in parallel with the upper and lower strip-shaped face plates of the supporting member,
Since the reinforcing members are fitted and combined with each other, it suffices to fit both end sides of the reinforcing members to the convex portions of the strip-shaped face plate that constitutes the supporting member, and extremely easily assemble and disassemble. be able to. (6) Since the supporting member reinforced by the reinforcing member can be attached to the upper surface plate serving as the pallet mounting surface by welding, the assembly can be easily performed. (7) In the case where the support member is fixed to the lower portions of the plurality of upper face plates at a position orthogonal to each other by welding or the like, the strength of the transportation pallet is improved, and heavy objects can be safely transported.
The life of the pallet can be extended. (8) With respect to the pallet according to claim 1, it is possible to obtain a solid pallet by reducing the number of reinforcing members to be fitted by using a molded support member formed by bending the strip-shaped face plate at four positions in the longitudinal direction. Assembly is also easy.

The metal plate material integrally formed with the strip-shaped face plate may be made of a steel plate or the like, or a galvanized steel plate or a stainless steel plate if corrosion resistance is required. Further, when it is required to be lightweight, an aluminum alloy such as duralumin may be used. The reinforcing member is formed by, for example, bending a strip-shaped metal plate into a U-shape, and a pair of upper and lower strip-shaped face plates are arranged in parallel with each other through the reinforcing member so as to be coupled and supported so that the supporting member is crushed. Can be reinforced without The above-mentioned joining of the upper face plate, the supporting member, the reinforcing member, etc.
It can be joined by known means such as welding, bolting, and riveting.

In the carrying pallet according to the third aspect, L-shaped portions provided at both ends in the width direction of the strip-shaped face plate are formed by being folded back inward, so that the sharp end portion does not project outward. As a result, the safety can be improved and the resistance against the external force in the direction of bending the strip plate can be improved.

The transport pallet according to claim 4 is the protective part according to any one of claims 1 to 3, wherein the longitudinal end of the upper face plate is crushed and bent downward in an L shape. Is configured. With the above configuration,
In addition to the actions of claims 1 to 3, the following actions are obtained. (1) Since the upper face plate serving as the pallet mounting face has the protective portion formed by crushing and bending the end portion of the strip face plate into an L-shape, even if a person or a mounted object comes into contact with the transportation pallet, Damage can be kept to a minimum and safety can be ensured when handling and shipping pallets. (2) Since the protective portion can be easily formed only by crushing and bending the end portion of the strip-shaped face plate inwardly into an L-shape, a transportation pallet can be manufactured very easily, which is excellent in economy.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION (Embodiment 1) Hereinafter, a first embodiment, which is an embodiment of the present invention, will be described in detail with reference to the drawings. FIG. 1 is a perspective view of a transportation pallet according to the first embodiment. In FIG. 1, 10 is a transportation pallet according to the first embodiment, 11 is an upper face plate composed of a band-shaped face plate having a zigzag-shaped cross section in which convex portions 11a and concave portions 11b are alternately arranged, and 12 is a belt-shaped face plate. L-shaped portions formed by bending the ends of the convex portions 11a on both sides inward, 13 are concave portions 1
The upper surface side is welded to a predetermined position on the back surface of 1b, and the band-shaped face plate is bent inward at four positions in the longitudinal direction and wound to be wound inward. A support member formed in the shape of (1), and 14 are two vertical surfaces 13a, 13c of the support member 13 which face each other.
The reinforcing member is arranged between the surfaces or between the surfaces 13e and 13c. The transport pallet 10 has a plurality of support members 13 (three in this case) arranged in parallel, and a plurality (five in this case) of upper face plates 11 are arranged so as to straddle the support members 13, 13, 13. The contact points are fixedly joined to each other. Known means such as spot or seam welding, bolt tightening, and rivet caulking can be used for fixing and joining.

As shown in FIG. 2, the strip-shaped face plates constituting the upper face plate 11 and the support member 13 are plural (n + 1, 3 in the figure).
Number of convex portions 11a and a plurality of (n, two in the figure) concave portions 11b are alternately arranged, and the convex portions 11a at both ends in the width direction are further arranged.
L formed by bending the outer end of the
It is provided with a character portion 12, and is wholly integrally formed from a metal plate such as a band. With the structure including the strip-shaped face plate having such a zigzag-shaped cross section and the support member 13 reinforced by the reinforcing member 14, rigidity that does not bend even when a heavy object is loaded on the transportation pallet 10 is obtained. can get. The natural number n can be set in the range of 2 to 10, for example.

As shown in FIG. 3, the support member 13 has a surface 13 formed by bending a strip-shaped face plate inward at four locations in the longitudinal direction.
a to 13e are formed, and they are molded into a rectangular frame shape having a side wall square shape surrounded by them. This bending process can be easily performed by crushing and bending the bending line portion using a press brake or the like. Also, if the concave portion of the strip-shaped face plate corresponding to the bending line and the portion of the right-angled rising surface connecting the concave portion and the convex portion are cut out in advance,
It can be bent more easily. When a strip-shaped flat plate is formed from a flat metal plate having a strip shape, a part of the portion corresponding to the bending line is previously punched out in a state of the flat metal plate by a punching press or the like, and a through hole is formed in a portion on the bending line. It is also possible to make it easy to bend by forming the.

As shown in FIG. 4A, the reinforcing member 14
The cross-sectional shape can be formed in a U shape surrounded by the surfaces 14a to 14c or can be a square shape. Reinforcement member 1
4 is formed by bending so as to have the cross-sectional structure as described above. The surface 14a having the width of the bent portion is the width of the convex portion 11a, and when fitted to the convex portions 11a at both ends, the width is further reduced by the width of the end portion. It should be noted that the direction of the U-shape can be arranged so as to be different from the direction by 90 degrees (see FIG. 4B), or the end portion can be bent inward to have a C-shaped cross section (FIG. 4 (c)). In the present invention, these U-shape, B-shape, and C-shape are collectively referred to as U-shape.

As shown in FIG. 1, the reinforcing member 14 is disposed between the upper and lower opposing belt-shaped face plates of the supporting member 13 at at least one of the both ends and the intermediate portion of the supporting member 13. If necessary, the end of the strip-shaped face plate of the upper face plate 11 may be bent and welded or bolted to the support member 13, or a reinforcing plate such as an L-shaped metal fitting may be attached and welded or bolted to combine. You can also reinforce the whole.

Since the transport pallet 10 of the first embodiment is configured as described above, it has the following excellent effects. (1) Since the strip-shaped face plate constituting the upper face plate 11 and the support member 13 has a cross section in which convex portions and concave portions are alternately arranged,
The resistance against bending in the direction in which this cross section extends can be increased and durability and stability can be maintained. (2) The weight can be reduced relative to the total volume, and the disassembling and assembling can be facilitated when moving an empty pallet. (3) Since the transportation pallet 10 is molded from a metal plate material, it does not generate toxic gas even in the event of a fire, etc., and is excellent in safety. (4) Since the upper face plate 11 and the support member 13 can be integrally molded from a metal plate by press molding, roll molding, etc., their manufacture and assembly can be facilitated, and the transportation pallet 10 can be manufactured at low cost. (5) By forming the L-shaped portion 12 formed by bending both ends in the width direction of the strip-shaped face plate, damage can be reduced even if a sharp end comes into contact with a person or another placed object. (6) Since the lightweight support member 13 reinforced by the reinforcing member 14 is attached to the back surface side of the strip plate, the pallet can be easily assembled and disassembled. (7) If the support member 13 is arranged under the upper face plate 11 by welding or bolting, the carrying pallet 1
The strength of 0 can be improved and heavy goods can be transported stably, and
The life of the pallet can be extended. (8) Since the supporting member 13 formed by bending and winding the band-shaped face plate is reinforced by the reinforcing member 14, the supporting member 13
As a result, it is possible to reduce the weight while maintaining the required structural strength. (9) The reinforcing member 14 having a U-shaped cross section is easy to manufacture and inexpensive because the shape is not complicated.
By arranging and removing an appropriate number of pallets, a pallet can be constructed according to the weight of the placed object.

(Second Embodiment) A carrying pallet according to a second embodiment of the present invention will be described. FIG. 5 shows the second embodiment.
FIG. 3 is an enlarged perspective view of a main part of the transportation pallet. In FIG. 5, 20 is a pallet for transportation of the second embodiment, 21, 21
a is a pair of upper and lower support plates, which are a pair of upper and lower support plates, which are strip-shaped face plates in which zigzag cross sections in which convex portions 11a and concave portions 11b (see FIG. 2) are alternately arranged are reversed, and 22 is an upper portion. L-shaped portions formed by bending the ends of the convex portions 11a on both end sides of the support plate 21 and the lower support plate 21a inward, and 23 are upper support plate 21 and lower support plate 21.
Reinforcing members having a U-shaped cross section in which upper and lower base end portions are fitted to the back surface side of each convex portion 11a of a and fixed by spot welding or the like, 24 is an upper support plate 21, a lower portion A support member comprising a support plate 21a and a reinforcing member 23, 25
Is an upper face plate serving as a pallet mounting surface fixedly arranged on the upper support plate 21 by welding or the like, and 26 is formed by crushing and bending an end portion in the longitudinal direction of the strip face plate of the upper face plate 25 into an L shape. It is a protected part.

FIG. 6 is a schematic sectional view showing a state in which the upper support plate 21 and the lower support plate 21a of the support member 24 and the reinforcing member 23 are connected to each other. As shown in FIG. 6, the support member 24 according to the second embodiment includes an upper support plate 21 and a lower support plate 21a that are band-shaped face plates, and a reinforcing member 23 that connects them. Then, as shown in FIG. 6A, the upper and lower end portions of the reinforcing member 23 are fitted to the back sides of the central convex portions 11a of the upper support plate 21 and the lower support plate 21a to support the upper support plate 21 and the lower support plate. It is connected to the plate 21a. or,
As shown in FIG. 6 (b), the reinforcing member 23 is provided on both the convex portions 11 a on both ends in the width direction of the upper support plate 21 and the lower support plate 21 a.
It is also possible to fit and connect the upper and lower ends of the upper and lower ends. The number of the reinforcing members 23 can be appropriately determined according to the weight of the object to be placed, and can be a transportation pallet that does not easily deform.

In this way, the reinforcing member 23 arranges a plurality of supporting members 24 connected in parallel by combining the upper supporting plate 21 and the lower supporting plate 21a, each of which is a strip-shaped face plate, and the supporting members 24 are arranged in parallel. Place a plurality of upper face plates 25 so as to be stacked on top of each other in a direction orthogonal to each other.
The second embodiment by spot welding or bolting the upper surface of the upper support plate 21 and the lower surface of the upper face plate 25 at each contact point.
The pallet 20 for transportation is formed. In this case, the protective portion 26 is formed by crushing the end portion side of the upper face plate 25, which is the pallet mounting surface arranged on the upper support plate 21, where the sharp cut portion is exposed downward into an L shape. be able to. By forming the protection portion 26, it is possible to prevent the cut end surface of the upper face plate 25 made of a band-shaped face plate from being exposed and prevent the worker's body or clothes from being damaged.
If the method of bending the strip face plate described in Embodiment 1 is applied to the method of bending the strip face plate, the L-shaped bending process becomes easy.

Since the transport pallet 20 of the second embodiment is constructed as described above, it has the following excellent effects. (1) Since the upper face plate 25 is laminated on the support member 24 in which the upper support plate 21 and the lower support plate 21a composed of a plurality of strip-shaped face plates are joined to each other by the reinforcing member 23, the strength and rigidity of the entire structure can be improved. Can be increased. (2) The zigzag cross-section directions of the support member 24 and the upper face plate 25 are alternately shifted by 90 degrees, thereby increasing the resistance against the twisting direction of the face of the transport pallet 20 and transporting. The stability when transporting the pallet 20 for use can be improved. (3) Convex portion 1 of each upper support plate 21 and lower support plate 21a
By assembling the upper and lower end portions of the reinforcing member 23 by fitting them on the back surface side of 1a so as to be connected and laminated. It can be disassembled easily and has excellent workability. (4) By forming the protection portion 26, even if a person, a placing object, or the like comes into contact with the transportation pallet 20, damage to the pallet 20 can be minimized, and safety is ensured during handling or transportation of the pallet. it can. (5) Since the protective portion 26 can be easily formed only by crushing and bending the end portion of the strip-shaped face plate of the upper face plate 25, which is the pallet mounting surface, inwardly into an L shape, it is extremely easy to carry the pallet 2 for transportation.
0 can be produced, and it is also economical.

[0020]

The transport pallet of the present invention comprises an upper face plate composed of a metal strip face plate such as a steel plate integrally formed to have a cross-sectional shape in which a plurality of convex portions and concave portions are alternately arranged, The support member and the support member are connected to each other through a reinforcing member made of a steel plate, which has a shape that is easy to manufacture, and is fitted to the convex portion to reinforce and combine them, so that the pallet can be easily assembled and disassembled, and Lightweight and robust.

[Brief description of drawings]

FIG. 1 is a perspective view of a transportation pallet according to a first embodiment of the present invention.

FIG. 2 is a perspective view of a strip-shaped face plate in the transportation pallet according to the first embodiment.

FIG. 3 is a perspective view of a support member in the transportation pallet according to the first embodiment.

FIG. 4 is a perspective view of a reinforcing member in the transportation pallet according to the first embodiment.

FIG. 5 is a perspective view of a main part of the transportation pallet according to the second embodiment of the present invention.

FIG. 6 is a schematic diagram showing a structure of a support member according to the second embodiment.

FIG. 7 is a perspective view of a transportation pallet in a conventional example.

[Explanation of symbols]

10: Transport pallet according to the first embodiment 11: Upper face plate 11a: convex portion 11b: concave portion 12: L-shaped part 13: Support member 13a to 13e: surface of support member 14: Reinforcing member 14a to 14c: Reinforcing member surface 20: Transport pallet according to the second embodiment 21: Upper support plate 21a: Lower support plate 22: L-shaped part 23: Reinforcing member 24: Support member 25: Upper face plate 26: Protective part

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Noboru Shimizu             2 Yamabashi Works at 905 Higashitoyoi, Kudamatsu City, Yamaguchi Prefecture             Business F-term (reference) 3E063 AA03 BA02 BA03 CA06 CA09                       CA11 CA13 CA16 CA25 EE01                       GG10

Claims (4)

[Claims] 1. An upper part formed of a metal strip-shaped face plate having a cross-sectional shape in which (a) (n + 1) convex portions and n (n is a natural number) concave portions are alternately arranged. Face plate, (b)
Convex portions between the upper and lower strip-shaped face plates at both longitudinal ends and at least one intermediate portion formed by bending and winding inward at four places in the longitudinal direction of the strip-shaped face plate and forming side faces in a substantially square shape. A support member having a reinforcing member having a U-shaped cross section fitted in a curved portion, and (c) a plurality of the support members being orthogonally joined to the lower portions of the plurality of upper face plates. A pallet for transportation characterized by 2. An upper part made of a metal strip-shaped face plate having a cross-sectional shape in which (a) (n + 1) convex portions and n (n is a natural number) concave portions are alternately arranged. Face plate, (b)
Both end portions in the longitudinal direction of the strip-shaped face plate arranged to face each other vertically,
And at least one portion of the intermediate portion, and a support member having a reinforcing member having a U-shaped cross section fitted to the convex portion between the upper and lower strip-shaped face plates, (c) the plurality of upper parts A pallet for transportation, wherein a plurality of the support members are orthogonally joined to the lower part of the face plate. 3. The transport pallet according to claim 1, wherein the strip-shaped face plate is one in which the end portions of the convex portions at both ends in the width direction are bent inward in an L-shape. 4. An end portion of the upper face plate in the longitudinal direction is L downward.
The transport pallet according to any one of claims 1 to 3, further comprising a protective portion that is crushed and bent into a letter shape.