JPS5824348B2 - shipping pallet - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a pallet that serves as a base or a packaging container stand when exporting goods.

Since pallets are handled by forklift trucks, they require skid space for long nails, and the conventional structure was to nail skids made of wood or steel plates to flat wood plates.

However, many countries have prohibited wood from being exported due to its inherent pest-infested nature.

In addition, there is a problem that wood may be twisted and damaged depending on the weather environment, or may release moisture and cause rust on the transported goods, so there has been a demand for a combination of a corrugated ponytail plate and a steel plate skid.

However, the mechanical properties of the two materials are extremely different, and the overall material must be lightweight and have great strength, so it was difficult to connect them and it was not realized.

That is, corrugated board material has a small Young's modulus in both directions and undergoes plastic deformation (commonly referred to as Shinu), while steel plate material has a large Young's modulus.

In short, it resembles the archaic word ``bran ni nail.''

The present invention has been made to overcome these problems, and has been achieved by skillfully utilizing the sinew properties of corrugated board to achieve positioning and strength distribution, thereby satisfying productivity and quality.

The present invention has the following configuration to achieve the above object.

It consists of a corrugated pole flat plate, a skid, and a tightening screw, and the skid, which is made by joining multiple bridge steel plates with a female thread in the center, is placed on the bottom surface of the corrugated flat plate parallel to the paper flute at right angles, and on the top surface of the gutter-shaped bent steel plate. , is characterized in that the bridge steel plate of the skid is fastened with a tightening screw with a washer extending from the upper surface of the corrugated pole flat plate.

The present invention will be explained below with reference to embodiments shown in the drawings.

As shown in Figures 1 and 2, the corrugated board 1 and the skid 2
and a tightening screw 3, and the lower surface 4 of the corrugated board flat plate 1
As shown by peeling off the part B, there is a paper flute 5.
The skids 2 are arranged parallel to each other in a direction perpendicular to the .

In the skid 2, a plurality of bridge steel plates 9 having a female thread 8 at the center are joined to the upper surface 7 of the trough-shaped bent steel plate 6 as simply and strongly as possible by spot welding.

The skid 2 forms a closed structure with the trough-shaped bent steel plate 6 and the bridge steel plate 9, and the required strength can be obtained by using the trough-shaped bent steel plate 0.8 mm and the bridge steel plate 12 mm for a skid with a height of 50 mm.

In terms of strength, workability, and material cost, it is optimal to join three bridge steel plates 9 to the center and both ends of the trough-shaped bent steel plate 6 in the longitudinal direction.

A pallet for transportation is made by fastening the female screw 8 in the center of the bridge steel plate 9 with the tightening screw 3 which passes through the washer 15 from the top surface 10 of the corrugated board flat plate 1.

The corrugated pole flat plate 1 is generally made of two layers of paper flutes (double flute) and has a thickness of about 8 mm.

In the case of two layers, when the tightening screw 3 is tightened, the paper on the top paper 11 and the bottom paper 12 of the corrugated pole flat plate 1 is subjected to a strong surface pressure, which causes the flute 13 to buckle and generate a drag force. The paper 14 holds a flat sheet.

The bridge steel plate 9 protruding from the upper surface 7 of the trough-shaped bent steel plate 6 and the washer 15 of the tightening screw 3 align the corrugated pole flat plate 1, and the recesses have a good positioning effect, and the skid 2 and the corrugated flat plate 1 are The surface pressure distribution becomes uniform, and a stable pallet for transportation can be obtained without mutual bending distortion.

The tightening screw 3 of the corrugated pole flat plate 1 is a blind fitting operation.

Pre-drilling holes in the corrugated pole flat plate 1 as shown in FIG. 4 helps the work efficiency.

The size of the hole should be approximately 20 mm even when using a 6 mm tightening screw.

In general export packaging, cardboard boxes are loaded on pallets.

At this time, it is easy to position by bending both ends 16 of the corrugated pole flat plate 1 onto a transportation pallet as shown in FIG. 5, and inserting it into the lower gap 17 of the corrugated pole box as shown in FIG. 6.

Finally, the loading stage pole and pallet are tightened together with the band 18.

The number of skids 2 is provided corresponding to the two claws of a forklift truck, and three skids are used, 19 in the center and 20 at both ends,
Use your fingernail to access the skid space 21.

As shown in Figures 7 and 8, there is a method of attaching a female thread 8 to the center of the bridge steel plate 9 by projection narrating, etc., but it is possible to attach a female thread 8 to the center of the bridge steel plate 9 by applying only burring processing, which is a potential female thread, and attaching the tightening screw 3 to the center of the bridge steel plate 9. It is efficient to tighten it all at once as a tapping screw.

The washer 15 used for the tightening screw 3 requires a larger area than expected.

In addition, it is necessary to consider the shape and thickness so that the corrugated pole flat plate 1 will bite firmly, and if the tightening screw is 6 mm, it is appropriate to use a flat washer with a thickness of 1.6mm and 16i.

As described above, we have provided a transportation pallet that satisfies productivity and required quality by utilizing the different mechanical properties of corrugated pole material and steel plate to achieve positioning and strength distribution.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing the assembled state of the present invention, and FIG.
1. FIG. 3 is a partially enlarged view of FIG. 2. FIG. 4 is a plan view of main parts. FIG. 5 is a sectional view of the second embodiment of the present invention. The figure is a partially cutaway sketch of the second embodiment.
Fig. 7 is a sketch showing the fastening relationship, and Fig. 8 is a schematic drawing of fastening using tapping screws, where 1 is a corrugated pole flat plate, 2 is a skid, and 3 is a...
・・Tightening screw, 6：・・・Gutter-shaped bent steel plate, 9：・・・Bridge steel plate, 11：・・・Top paper, 12：Bottom paper , 13 is...flute, 14 is...center paper, 15 is...
The washer 18 is a band.

Claims (1)

[Claims] 1. Consisting of a corrugated pole flat plate, a skid, and a tightening screw, on the lower surface of the corrugated cardboard flat plate in a direction perpendicular to and parallel to the paper flute,
A skid in which a plurality of bridge steel plates having female threads in the center are joined is arranged on the upper surface of the trough-shaped bent steel plate, and the bridge steel plates of the skid are fastened with tightening screws with washers from the upper surface of the corrugated pole flat plate. pallet for transportation. 2. A transportation pallet according to claim 1, in which the above-mentioned corrugated pole flat plates are fluted in two layers. 3. Claims 1 and 2 in which a hole is pre-drilled at the position where the tightening screw of the corrugated pole flat plate is passed through.
Parallel for shipping. 4. The transport pallet according to claim 1, wherein both ends of the corrugated cardboard flat plate are bent to position the loaded corrugated pole boxes. 5. The transportation pallet according to claim 1, wherein the number of skids arranged in parallel is three. 6. The transportation pallet according to claim 1, in which the number of the plurality of bridge steel plates is three. 7. The transportation pallet according to claim 1, wherein the bridge steel plate having a female thread in the center is burred to have a latent female thread, and the tightening screws are self-tapping screws. 8. The transportation pallet according to claim 1, wherein a rectangular washer is used as the washer for the tightening screw. 9. The transport pallet according to claim 1, wherein the bridge steel plates are joined by spot welding.