JPH08198259A - Pallet - Google Patents

Abstract

PURPOSE: To provide a pallet that is lightweight, highly rigid and strong while being accommodative to improvement of efficiency in distributing articles, automatization of unloading and storage in a warehouse, and is free from giving damages to articles to be carried because of low hardness of its surface, while being durable without being deteriorated. CONSTITUTION: A pallet is constructed of a frame 2 that is made up by combining hollow FRP frame bodies 1, 1... in closed section structure in butting with corners where the frame bodies 1, 1... combined in butting joined with L-shaped plate materials 3, 9 and T-shaped plate materials 4, and support legs 5, 5... that are attached to the frame bodies.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pallet suitable for carrying objects having a relatively low surface hardness such as resin pipes and aluminum sashes.

[0002]

2. Description of the Related Art Conventionally, most pallets are made of wood. The wooden one has the advantage that it does not easily scratch the transported object because it has a low surface hardness, but it is relatively heavy,
Moreover, since it decays, it is inferior in durability.

There is also a steel pallet, but the steel pallet has a heavy weight and is difficult to handle, and the surface hardness is high, so that the object to be transported has a relatively surface such as resin or aluminum. If the hardness is low, the transported object is easily damaged. In order to prevent this, some cushioning materials such as rubber are attached to the surface, but they are frequently peeled off, which makes maintenance troublesome.

On the other hand, in recent years, the weight reduction of pallets has come to be widely taken up along with the securing of the flow rate of goods, the efficiency of physical distribution, the automation of unloading work, the spread of automation of physical distribution warehouses, and the maintenance. Resin-made pallets have come to be considered from the viewpoints of cost reduction and improvement of durability.
However, resin pallets have a problem that they are inferior in rigidity and strength to those made of wood or metal.

[0005]

SUMMARY OF THE INVENTION The object of the present invention is to solve the above-mentioned problems of conventional pallets, to secure a material flow rate with light weight, high rigidity and high strength, to improve the efficiency of physical distribution, and to carry out unloading work. It is an object of the present invention to provide a pallet that is not only convenient for the automation of the above, the automation of the distribution warehouse, etc., but also has a low surface hardness so that there is little fear of damaging the transported object, and that it does not decay and has excellent durability.

[0006]

In order to achieve the above object, the present invention comprises a frame made of FRP frame members butted together, and the butted portions of the frame members are joined together using a plate material. Providing a pallet. For lighter weight, higher rigidity, and higher strength, the frame body preferably has a hollow closed cross-section structure, and preferably contains reinforcing fibers extending in the longitudinal direction. The joining of the frame bodies at the abutting portion is performed by using an L-shaped plate material on the side surface of the abutting portion, and further, a T-shaped plate material is provided on the back surface of the butting portion corresponding to the surface on which the transported object is placed. It is preferable to use it. Further, the plate material is preferably made of FRP. Further, a projection portion to which a lower part of the pillar legs of the upper pallet to be superposed is fitted on the upper portion so that the frame can be used for accommodating a fork of a forklift, and a plurality of pillar legs, preferably, can be used by stacking in multiple stages It is also good to provide. It is also preferable to provide a buffer layer on the surface of the frame on which the transported object is placed in order to more completely prevent the transported object from being damaged.

To explain the present invention in more detail, the pallet of the present invention has, for example, FRP plate members connected in parallel to the upper and lower surfaces of an FRP frame body arranged in parallel. Although it can be configured as a so-called "sawtooth" shape, it is preferably configured as follows.

That is, as shown in FIGS. 1 and 2, FR
Frames 1, 1, ... Made of P are butted to form a frame 2. The abutting portions of the frame bodies 1, 1, ... Are joined by using L-shaped plate members 3 and 3 on their side surfaces, and T-shaped plate member 4 is used on the back surface corresponding to the surface on which the transported object is placed. To join. In the corner, L instead of the T-shaped plate 4
Shaped plate material 9 is used. The frame 2 is preferably provided with a plurality of prismatic columnar legs 5, 5, ... Made of light metal such as aluminum alloy.
The lower part of each of the column legs 5, 5 ... projects a little from the back surface of the pallet, and a space into which the fork of the forklift can enter is formed below the pallet. Further, a projecting portion 6 to which the lower part of the pillar legs of the upper pallets to be stacked is fitted is provided on the upper part of each pillar leg 5, 5, ... In order to stack a plurality of pallets in multiple stages. .

In the above description, the FRP frame body may have an open cross-sectional structure with a U-shaped cross section, but if the hollow closed cross-section structure with the cross section is closed as shown in FIG. It is preferable because the strength is further improved. Both frames can be manufactured by, for example, a pultrusion method. High-strength, high-modulus fibers such as carbon fibers, glass fibers, and aramid fibers can be used as the reinforcing fibers in the FRP. The form may be a strand, or may be a fabric form such as a woven fabric, a mat, or a non-woven fabric. However, in order to obtain a frame body having higher rigidity and high strength, 10
It is preferable that about 60% contains continuous reinforcing fibers extending in the length direction of the frame. In addition, when arranging continuous reinforcing fibers such as strands and fabrics in the inner layer and arranging mats of reinforcing fibers, non-woven fabrics and non-woven fabrics of synthetic fibers in the outer layer
A frame having a good surface condition can be obtained. As the resin forming the FRP matrix, a thermosetting resin such as an epoxy resin, an unsaturated polyester resin or a vinyl ester resin, or a thermoplastic resin such as a nylon resin, an ABS resin or a polyphenylene sulfide resin can be used.

The plate member joining the abutting portions of the frame is
It may be made of a metal such as an aluminum alloy, but like the frame body, it is preferably made of FRP including the above-mentioned reinforcing fiber woven fabric or mat as a reinforcing material. The joining of the frame body by such a plate material made of FRP is carried out through a prepreg obtained by impregnating a preformed plate material into the frame body and impregnating the woven fabric or mat of the above-mentioned reinforcing fiber with the thermosetting resin. It is performed by pasting and curing the resin of the prepreg. At this time, it is preferable to similarly attach a prepreg so as to cover the end portion of the plate material and cure the resin of the prepreg to form the reinforcing layer 7.

The support leg is, for example, as shown in FIG.
The plate material 8 is welded to the support leg in advance, and the plate material portion is attached to the frame by using a blind rivet. You may use an adhesive together. The pillar legs are also
Further, like the frame body, it may be made of FRP.

In the above, the abutting portion of the frame body can be joined by using the T-shaped plate material even on the surface on which the transported object is placed. However, in that case, a step is formed on the surface of the frame, and it may be necessary to eliminate the step depending on the type of the transported object.

In the pallet of the present invention, since the frame body is made of FRP and the surface hardness is relatively low, there is little fear of damaging the transported object, but the surface of the frame on which the transported object is placed is buffered. By forming the layer, it becomes possible to more completely prevent the transported object from being damaged. Such a buffer layer can be formed by sticking rubber or the like, but since it is easily peeled off, the surface of the frame, for example, a paint such as polyurethane paint, polyester paint, epoxy paint, etc. Is 40-80 μm
Resin hollow filler with some degree of cushioning property (for example, vinylidene chloride / acrylonitrile filler)
It is preferable to form a mixture by adding 2 to 10% by weight of rubber powder or the like in a thickness of 0.1 to 0.5 mm.

[0014]

EFFECTS OF THE INVENTION The pallet of the present invention is formed by abutting FRP frame members to form a frame, and the abutting portions of the frame members are joined together by using a plate material.
It is convenient for securing the flow rate of goods with high rigidity and strength, improving the efficiency of physical distribution, automating the unloading work, and automating the physical distribution warehouse.
For example, if the loaded weight is 2,000 kg, the weight can be about one half of that of conventional steel, that is, about 40 kg. Therefore, the flow rate can be secured and the physical distribution can be made more efficient by the reduced weight, and the unloading work and the distribution warehouse can be easily automated. Moreover, unlike wooden ones, it does not decay, so it has excellent durability, and by selecting the type, arrangement, and amount of reinforcing fibers, the shortcomings of rigidity and strength, which were the drawbacks of resin-made ones, can be solved. . Furthermore, since the frame is made of FRP and the surface hardness is relatively low, there is essentially no concern about damaging the transported object,
By forming a buffer layer on the surface of the frame on which the transported object is placed, scratches can be more completely prevented.

[Brief description of drawings]

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

FIG. 2 is a schematic perspective view of a main part of the back surface of the pallet shown in FIG.

[Explanation of symbols]

 1: FRP frame body 2: Frame 3: L-shaped plate material 4: T-shaped plate material 5: Support leg 6: Protruding part of support leg 7: Reinforcing layer 8: Plate material 9: L-shaped plate material

Claims (9)

[Claims] 1. A pallet formed by abutting FRP frame bodies to form a frame, and joining the abutting portions of the frame bodies with a plate material. 2. The pallet according to claim 1, wherein the frame has a hollow closed cross-section structure. 3. The pallet according to claim 1, wherein the frame body includes reinforcing fibers extending in the length direction of the frame body. 4. The frame body is L on the side surface of the butted portion.
The pallet according to any one of claims 1 to 3, which is joined using a shaped plate material. 5. The pallet according to claim 4, wherein the frame body is joined using a T-shaped plate material on the back surface of the butting portion corresponding to the surface on which the transported object is placed. 6. The plate material is made of FRP.
One of the 5 palettes. 7. The pallet according to claim 1, wherein a plurality of support legs are attached to the frame. 8. The pallet according to claim 7, wherein the upper part of the pillar leg is provided with a protrusion to which the lower part of the pillar leg of the upper pallet to be superposed is fitted. 9. The pallet according to claim 1, wherein a buffer layer is provided on the surface of the frame on which the transported object is placed.