JPS6335965Y2 - - Google Patents

Description

[Detailed description of the invention] [Purpose of the invention] (Field of industrial application) The present invention relates to a pallet used when transporting cargo with a forklift or the like.

(Prior Art) Pallets have conventionally been used to facilitate loading, unloading, and transporting cargo.

This pallet is usually transported together with loaded cargo and is made of wood, plastic, or the like.

As this pallet, a wood pallet as shown in FIG. 9 has been proposed (Japanese Utility Model Publication No. 127565/1983).

This pallet 100 has three sets of pallet girders 105 formed in advance, and the plates 10 are arranged around these.
6. This pallet girder plate 105 consists of two upper and lower strip-shaped plates 101, 101.
A cylindrical support member 10 at least at both ends between
2, 102, and a piece of wood 103, 103 interposed in the support member 103, 103 so that its end surface abuts the inner surface of the plate body 101, 101, and these plate bodies 101, 101 and the support member 10
2, 102 are connected with nails 104.

However, pallets made of such wood are not only expensive in themselves, but also bulky, and when used as part of pallet packaging materials, which has been the case recently, this increases transportation costs. This is the cause. Furthermore, in the case of wooden pallets, pests may attach to them, making it difficult to use them for international transactions, and requiring treatments such as fumigation, resulting in high costs.

On the other hand, plastics are not strong enough,
It is slippery during cargo handling and is expensive.

Recently, paper pallets as shown in FIGS. 10 and 11 have been proposed (see, for example, Japanese Utility Model Publication No. 39793/1983).

This pallet 200 has a U-shaped upper plate 202 made of cardboard, which is shallower than the main body 201, tightly attached to the top of a U-shaped main body 201 made of corrugated cardboard.
A plurality of square paper tubes 204 are brought into close contact with the inner peripheral surface of a cavity 203 formed by the inside of the paper tube 1 and the upper plate 202 in the direction perpendicular to the axis, and a fork insertion opening 205 is inserted between the square paper tubes 205. The main body 201, the upper plate 202 and the square paper tube 204 are connected to the boxer needle 2
They are fixed together by joining at 06.

(Problem that the invention attempts to solve) However, such paper pallets 10
0.200 does not have sufficient compressive strength, so pallets using square paper tubes have the disadvantage of being crushed if the weight of the loaded object is large. In particular, because it has a sandwich structure in which square paper tubes are connected by paper flat plates, it is weak against forces acting in a direction perpendicular to the square paper tubes, which are the girders, in a lateral direction, and is easily deformed. There were flaws.

Furthermore, since the square paper tubes used as beams for such paper pallets are hollow inside, they cannot be nailed, and there are problems in fixing them to other members such as the U-shaped top plate.

The present invention was developed in order to solve the drawbacks and problems associated with the conventional technology described above, and it is possible to drive nails and has excellent strength against lateral forces without losing weight. The purpose is to provide a paper pallet with high rigidity.

[Structure of the idea]

(Means for Solving the Problems) The present invention provides a pallet in which a plurality of square paper tube girders are arranged in parallel at predetermined intervals on the lower surface of a deck board and are fixed by fixing devices. The paper tube girder material is made of an outer shell made of a long square paper tube, an outer tube made of a short square paper tube whose axial length is approximately equal to the vertical length of this outer shell, and this outer shell. It consists of a wooden pedestal attached to the top of the cylinder, and a reinforcing unit made of paper angle material that supports this pedestal, and the reinforcing unit is inserted into the outer shell so that the axis of the outer cylinder is aligned with the outer shell. The above object is achieved by fitting the pedestal in close contact with the outer shell in a direction perpendicular to the axis.

(Function) In this way, it becomes possible to drive nails into the pedestal, and therefore it becomes easy to fix it to various things. In addition, regardless of the direction of the load applied to this pallet, the compressive strength increases significantly, and in particular, since the outer shell and outer cylinder are in surface contact, the square paper tube girder material is strong against lateral loads. Therefore, the rigidity of the pallet is improved.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.

Figure 1 is a perspective view of the pallet according to the present invention, Figure 2 is a perspective view of the pallet according to the present invention;
The figure is a schematic perspective view of the square paper tube girder used in the pallet of Figure 1, Figure 3 is a partially cutaway perspective view of the reinforcing unit in Figure 2, and Figure 4 is A--A of Figure 3. A
FIG. 5 is a cross-sectional view taken along the line B--B in FIG. 3.

The pallet 1 shown in FIG. 1 is formed by fixing a plurality of square paper tube girders 2 and deck boards 3 such as veneer plywood or corrugated board using nails 4.

As shown in FIG. 2, the square paper tube girder 2 consists of a long square paper tube outer shell 5 and a plurality of reinforcing units 6 that are tightly fitted into the outer shell 5. ing.

This reinforcing unit 6, as shown in FIG.
An outer cylinder 7 made of a square paper tube having an axis perpendicular to the axis of the outer shell 5, a wooden pedestal 8 attached to the top of the outer cylinder 7, and a paper angle material for supporting the pedestal 8. It consists of 9. This paper angle material 9 is an L-shaped angle material formed by stacking papers.

A plurality of reinforcing units 6 thus constructed are inserted into the outer shell 5, and the pedestal 8 and the outer shell 5 are fixed together with the deck board 3 using nails 4.

Here, as the square paper tubes used as the outer shell 5 and the outer cylinder 6, for example,
There is one described in No. 142397.

The square paper tube disclosed herein uses a plurality of strips of paper coated with an adhesive on the back side, except for the strip paper forming the bottom layer, which is coated with a lubricant such as paraffin on the back side. The paper strips are rotated diagonally into several layers in a spiral manner so that there are no gaps on either side, and so that they do not overlap with the paper strips forming other layers. After winding around a square shaft, the surface of this square paper tube is pressed with rollers to form the paper tube.

Regarding the rectangular paper tube used for the outer shell 5, one having a thermosetting resin layer formed on its surface is preferable from the viewpoints of compressive strength, water resistance, moisture resistance, etc. Examples of the thermosetting resins used include unsaturated polyester resins, epoxy resins, phenolic resins, melamine resins, thermosetting acrylic resins, and diisocyanate resins [e.g., diisocyanate prepolymers (trade name: PHB-40)]. Yes, usually 20~
100g/ ^m2 is used.

Moreover, the paper angle material 9 is, for example,
As described in No. 51-13921, a plurality of paper strips whose inner surfaces are coated with adhesive, except for the paper strip constituting the innermost layer, are run in the axial direction on a shaft having an approximately right-angled cross section. The laminated paper is pressed and pressed to form a preform, and then this laminated paper is pressed and molded from both the inside and outside using rotating rollers.

When a load is placed on the pallet 1 constructed in this way, the load of the load is applied to the pallet 1, especially the plurality of square paper tube girders 2; A part of this load is supported by the outer shell 5, and most of the other load is supported by a reinforcing unit 6 provided inside the outer shell 5.

In particular, in this reinforcing unit 6, the load is supported by the outer cylinder 7 and also by the pedestal 8 and paper angle material 9, so the supporting strength is significantly improved. .

Moreover, even if a lateral load is applied to the pallet 1, since the reinforcing unit 6 is in surface contact with the outer shell 5, it can sufficiently withstand this lateral load, and the pallet 1. The rigidity of the entire structure is significantly improved.

In addition, as shown in FIG. 3, if both ends of the paper angle material 9 are inserted into the corners of the outer cylinder 7 and the apex is in contact with the inner surface, the holding force of the pedestal 8 will only be improved. Therefore, sufficient durability is exhibited even against the load from the lateral direction.

The present invention is not limited to the above-mentioned embodiment. For example, as shown in FIGS. 6 and 7, pedestals 8 may be provided above and below the reinforcing unit 6, and as shown in FIG. may be fixed to the top and bottom of the square paper tube girder material 2.

[Effect of idea]

As mentioned above, the palette according to the present invention is
The square paper tube girder material is made of an outer shell made of a long square paper tube,
An outer cylinder made of a short square paper tube whose axial length is approximately equal to the vertical length of this outer shell, a wooden pedestal attached to the top of this outer cylinder, and a wooden pedestal that supports this pedestal. and a reinforcing unit made of paper angle material, and the reinforcing unit is placed inside the outer shell so that the axis of the outer cylinder is perpendicular to the axis of the outer shell and the pedestal is in close contact with the outer shell. Since it is fitted, it can be nailed, making it easy to fix to various things, and the pedestal part only needs to be thick enough for nailing. It requires less wood, is inexpensive, extremely lightweight, and easy to transport.

Furthermore, the compressive strength is significantly increased regardless of the direction of the load applied to the pallet. In particular, if a paper angle material is inserted into the outer cylinder, the holding force of the pedestal is extremely good, and durability is exhibited even against lateral loads.

[Brief explanation of drawings]

Figure 1 is a perspective view of the pallet according to the present invention, Figure 2 is a perspective view of the pallet according to the present invention;
The figure is a schematic perspective view of the square paper tube girder used in the pallet shown in Figure 1. Figure 3 is a partially cutaway perspective view of the reinforcing unit used in the square paper tube girder shown in Figure 2. 4 is a sectional view taken along the line A-A in FIG. 3, FIG. 5 is a sectional view taken along the line BB in FIG. 3, and FIG. 6 is a 4th sectional view showing another embodiment of the present invention. A- similar to
7 is a sectional view taken along the line B-B in the embodiment shown in FIG. 6, and FIG. 8 is a sectional view taken along the line B-B of the embodiment shown in FIG. 9 and 10 are perspective views showing conventional pallets, and FIG. 11 is a sectional view taken along the line A--A in FIG. 10. 1... Pallet, 2... Square paper tube girder material, 3...
Deck board, 4...nail, 5...outer shell, 6...reinforcement unit, 7...outer cylinder, 8...cradle, 9...paper angle material.

Claims (1)

[Scope of utility model registration request] In a pallet in which a plurality of square paper tube girder members are arranged in parallel at predetermined intervals on the lower surface of a deck board and are fixed by fixing devices, the square paper tube girder materials are attached to a long square paper tube. an outer shell made of a short square paper tube whose axial length is approximately equal to the vertical length of the outer shell, a wooden pedestal attached to the top of the outer shell, and a wooden pedestal attached to the top of the outer shell. a reinforcing unit made of paper angle material that supports a pedestal, and the reinforcing unit is placed inside the outer shell so that the axis of the outer cylinder is in a direction perpendicular to the axis of the outer shell, and the pedestal is placed inside the outer shell. A pallet that fits tightly into the pallet.