JP2003191954A - Pallet for transfer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pallet for transfer, easy to be manufactured, assembled and disassembled, light in weight and strong in its structure. <P>SOLUTION: The pallet consists of (a) upper face sheets 11, each consisting of a metal belt-like face sheet M formed to have a sectional shape in which (n+1) pieces of protrusions 11a and n pieces (n is a natural number) of recesses 11b are alternately arranged, (b) lower face sheets 13, each consisting of a belt-like face sheet M and being disposed on the underface of each upper face sheet 11, and (c) support members 14 mounted to the underfaces of the lower face sheets 13 at both ends of each lower face sheet 13 in its longitudinal direction and at a portion of at least one place of an intermediate part thereof. The pallet 10 for transfer is formed by a method wherein (d) each support member 14 is formed in the state of a U-shaped section with a mouth opened upward, and upper ends 27 and 28 of left and right side faces of each support member 14, which are formed by upwardly bending both right and left sides of a bottom 25 thereof, are fitted with the protrusions 11a of each lower face sheet 13, and (e) each of a plurality of lower face sheets 13 is orthogonally joined to the underface of each of a plurality of upper face sheets 11. <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. 6, 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. 6 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 problems,
An object of the present invention is to provide a transportation pallet that is lightweight and has required durability, is excellent in safety during handling and fire, and is easy to manufacture and assemble.

[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)
A lower face plate made of the strip face plate disposed below the upper face plate, and (c) both ends in the longitudinal direction of the lower face plate,
And a support member attached below the lower face plate at at least one position of the intermediate portion, and (d) the support member is formed in a U-shaped cross section with an upward opening. The left and right side upper ends formed by bending the left and right sides of the bottom part upward are fitted into the convex portions of the lower face plate, and (e) the lower face plate is provided below the plurality of upper face plates. It is characterized in that a plurality of them are orthogonally joined.

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 strip-shaped face plates constituting the upper face plate and the lower face plate are formed of a metal plate, they are excellent in safety because they do not generate 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) Since the left and right upper end portions of the support member are fitted and combined with the pair of convex portions at both ends of the plurality of convex portions formed in parallel with the lower face plate, respectively, It suffices to fit both left and right upper ends of the support member to the convex portions of the strip-shaped face plate that constitutes the lower face plate, and extremely easily assemble,
Decomposition can be done. (6) Since the lower face plate can be attached to the upper face plate serving as the pallet mounting surface by welding, the assembly can be easily performed. (7) In the case where the lower face plate is fixedly arranged by welding or the like at right angles to the lower parts of the plurality of upper face plates, the strength of the transportation pallet is improved, and heavy objects can be safely transported, and
The life of the pallet can be extended.

The metal plate 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 support member is formed, for example, by bending a strip-shaped metal plate into a U-shape, and the support member can be fitted and arranged in a convex portion below the lower face plate at a predetermined interval.
The upper face plate, the lower face plate, the support member, and the like can be joined by a known means such as welding, bolting, and riveting.

In the carrying pallet according to the second 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.

According to a third aspect of the present invention, in the pallet for transportation according to the first or second aspect of the present invention, a longitudinal end portion of the upper face plate has a protective portion bent downward in an L shape. Is configured. According to the above configuration, claim 1
Alternatively, the following action can be obtained in addition to the action of 2. (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.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below with reference to the drawings. FIG. 1 is a perspective view of a transportation pallet according to an embodiment. FIG. 2 is a perspective view of a belt-shaped face plate in the transportation pallet of the embodiment. In FIGS. 1 and 2, reference numeral 10 denotes a transportation pallet according to the present embodiment.
Reference numeral 1 denotes an upper face plate composed of a strip face plate M having a zigzag cross section in which convex portions 11a and concave portions 11b are alternately arranged, and 12 denotes end portions of the convex portions 11a on both sides of the strip face plate M. An L-shaped portion 13 formed by bending inward is welded to a predetermined position on the back surface side of the concave portion 11b of the upper face plate 11 at the same upper face side of the belt face plate M as the belt face plate M constituting the upper face plate 11. 14 is a lower face plate arranged in a longitudinal direction, and 14 is a U-shaped cross section fitted to the convex portion of the lower face plate 13 at both longitudinal end portions of the lower face plate 13 and at least one position in the middle portion. It is a support member. In the transportation pallet 10 of the present invention, a plurality of lower face plates 13 (three in FIG. 1) provided with support members 14 are arranged in parallel, and a plurality of upper face plates 11 (five in FIG. 1) 11 are arranged. The lower face plates 13, 13,
It is placed on the upper part so as to straddle 13 and each contact point is fixedly joined. 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 face plates M constituting the upper face plate 11 and the lower face plate 13 are plural (n + 1, three in the figure) convex portions 11a and plural (n, two in FIG. 2). The concave portions 11b are alternately arranged, and further, the outer ends of the convex portions 11a at both ends in the width direction are provided with L-shaped portions 12 formed by being bent inward in an L-shape. It is molded integrally. Even if a heavy object is loaded on the transportation pallet 10 by adopting the structure including the upper face plate 11 and the lower face plate 13 formed of the band-shaped face plate M having the zigzag cross section, and the supporting member 14. The rigidity that does not bend can be obtained. The natural number n can be set in the range of 2 to 10, for example.

As shown in FIG. 3A, for example, the support member 14 is formed by bending both left and right sides of the bottom portion 25 upward so that the left side surface portion 21 and the right side surface portion 22 and the left side surface portion 21 and the right side surface portion 22 are further inward. The left bent portions 23, 23 and the right bent portions 24, 24 that are bent are formed. Such a support member 14 is shown in FIG.
From the metal expansion plate 26 shown in (b), the left bent portions 23, 23 and the right side surface portion 2 provided at the end of the left side surface portion 21.
It is formed by bending the right side bent portions 24, 24 provided at the end portions of 2 inward (direction of arrow K) and further bending the left side surface portion 21 and the right side surface portion 22 inward (direction of arrow H).

As shown in FIG. 3B, which is a sectional view taken along the line X--X of FIG. 3A, the support member 14 is formed by bending.
Has a U-shaped cross section with an open mouth, a left side surface portion 21 is formed from the lower left of the bottom portion 25 to the upper side, and a left side surface upper end portion 27 is formed at the upper end thereof. Similarly, the right side surface portion 22 is formed from the lower right side to the upper side of the bottom portion 25, and the right side surface upper end portion 28 is formed at the upper end thereof.

As shown in FIG. 4, the bent portions 23, 24
14a is formed to be substantially the same as the width 11H of the openings 11c formed at both ends in the width direction of the lower face plate. That is, the width 11H is obtained by subtracting the width of the L-shaped portion 12 from the width of the convex portion 11a.

As shown in FIGS. 1 and 4, the support member 14
Is at least one of both ends of the lower face plate 13 and the middle part.
At a location below the lower face plate. The number of supporting members arranged on one lower face plate 13 is appropriately increased or decreased depending on the magnitude of the load placed on the pallet. In the case of FIG. 1, as an example, one lower face plate 13 is provided at two end portions and one intermediate portion. If necessary, both ends of the upper face plate 11 in the longitudinal direction may be bent downward and welded or bolted to the lower face plate 13, or a reinforcing plate such as an L-shaped metal fitting may be attached and welded or bolted. It is also possible to reinforce the whole by combining them.

Since the transport pallet 10 of the embodiment is constructed as described above, it has the following excellent effects. (1) Since the strip-shaped face plates constituting the upper face plate 11 and the lower face plate 13 have 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 lower face plate 13 can be integrally formed 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) If the L-shaped portion 12 is formed by bending the lower ends of both ends of the strip-shaped face plate in the width direction, the damage can be reduced even if the sharp edge comes into contact with a person or another placed object. (6) Since the lightweight support member 14 is attached to the back surface side of the lower face plate 13, the pallet can be easily assembled and disassembled. (7) If the lower face plate 13 is arranged below 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 14 having a U-shaped cross section is not complicated in shape, it is easy and inexpensive to manufacture.
By arranging and removing an appropriate number of pallets, a pallet can be constructed according to the weight of the placed object.

Next, a carrying pallet according to the embodiment of the present invention will be described. FIG. 5 is an enlarged perspective view of essential parts showing a combined state of the upper face plate 11, the lower face plate 13 and the support member 14 of the transportation pallet of the present embodiment shown in FIG. As shown in FIG. 5, the protective portion 15 is formed by crushing the exposed end portion of the upper face plate 11 serving as the pallet mounting surface arranged on the lower face plate 13 into an L-shape to bend it downward. Can be formed. By forming the protective portion 15, it is possible to prevent the cut end surface of the upper face plate 11 made of a band-shaped face plate from being exposed, and avoid damaging the body, clothes, or load of the operator.

[0017]

The carrying pallet of the present invention has an upper face plate and a lower face made of metal strip-shaped face plates such as steel plates integrally formed so as to have a cross-sectional shape in which a plurality of convex portions and concave portions are alternately arranged. A face plate and a supporting member, etc. made of steel plate that is easy to manufacture are connected to each other by fitting them into the convex portion of the lower face plate for reinforcement and assembling and disassembling the pallet, and it is lightweight. You can be firm with.

[Brief description of drawings]

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

FIG. 2 is a perspective view of a band-shaped face plate in the transportation pallet of the embodiment.

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

FIG. 4 is a side view showing a fitted state of support members in the transportation pallet of the embodiment.

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

FIG. 6 is a perspective view of a transportation pallet in a conventional example.

[Explanation of symbols]

M: Strip face plate 10: Pallet for transportation 11: Upper face plate 11a: convex portion 11b: concave portion 11c: opening 11H: Width of opening 12: L-shaped part 13: Lower face plate 14: Support member 14a: width of the bent portion 15: Protection section 21: Left side part 22: Right side part 23: Left bend 24: Right bend 25: Bottom 26: Deployment plate 27: Upper left edge 28: Upper end of right side surface

   ─────────────────────────────────────────────────── ─── 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 CA09 CA11                       CA13 CA25 EE03 GG10

Claims (3)

[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)
A lower face plate made of the strip face plate disposed below the upper face plate, and (c) both ends in the longitudinal direction of the lower face plate,
And a support member attached below the lower face plate at at least one position of the intermediate portion, and (d) the support member is formed in a U-shaped cross section with an upward opening. The left and right side upper ends formed by bending the left and right sides of the bottom part upward are fitted into the convex portions of the lower face plate, and (e) the lower face plate is provided below the plurality of upper face plates. A transportation pallet characterized in that a plurality of them are joined at right angles. 2. The transportation 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. 3. A longitudinal end portion of the upper face plate is L downward.
The transport pallet according to claim 1 or 2, further comprising a protective portion that is crushed and bent into a letter shape.