JPH0139939B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a pallet for a forklift that is easy to manufacture and can be provided at low cost.

[Problems to be solved by conventional technology and invention]

Plastic pallets, which are generally used when loading and unloading large amounts of cargo with forklifts, are molded from plastic with the same external dimensions as the length, width, and thickness when in use. The disadvantage was that the mold became larger and more expensive, and the price of the plastic pallet increased accordingly.

For this reason, since the pallet board is made of plastic and is integrally molded, the inventor decided to mold the pallet board into eight pieces (actually two types of molds) and assemble them. We thought that it would be possible to make a pallet board with fork holes like the previous products, and based on that idea, we could form a pallet board by stacking and polymerizing two boards to form one board by incorporating four boards. He invented a new method.

There are also ``synthetic resin pallets'' disclosed in Utility Model Application Publication No. 54-140460 and ``Components of skids or pallet stacking platforms'' disclosed in Utility Model Publication No. 53-29338, but these are all It is simply a type in which upper and lower members of the same shape are joined together and secured with bolts.

[Means for solving problems]

The present invention aims to solve these drawbacks, and will be detailed as follows with reference to the accompanying drawings showing embodiments.

Bolt penetration holes 2 are bored at predetermined positions at the four corners of the square plate 1, and a convex plate 3 with bolt penetration holes 11 bored in alignment with the bolt penetration holes 2 at one corner is provided integrally with the square plate 1, A semi-cylindrical fitting convex portion 4 is formed on one half edge of the bolt penetration hole 11 of this convex plate 3, and a semi-cylindrical fitting concave portion 5 is formed on the opposite half edge to provide a butt joint portion 6, and this butt joint is provided. A pallet piece a in which a protruding butt-engaging part 7, which has the same structure as the butt-joining part 6 and is connected to the outside in an extended protruding state, is integrally provided with the square plate 1 at the opposite corner of the part 6. , b, and two pallet pieces c, d, each having a butt-joining part 6 formed at one corner of the same square plate 1 and protruding butt-engaging parts 7 formed at both adjacent corners.
Four pallet pieces a, b, c, and d are arranged adjacent to each other so that pallet piece a, pallet piece b, and pallet piece c and pallet piece d are located on diagonal lines that intersect, respectively. to form an upper plate A and a lower plate B, and the upper plate A and the lower plate B are butt-fitted by butt-fitting the respective butt-joining portions 6 and protruding butt-engaging portions 7 to form overlapping bolt penetration holes 2. , 11 and screw together the nuts 9 to separate the eight pallet pieces a, b, c,
d are combined to form two fork insertion grooves 10 in a square shape.

〔Example〕

The drawing shows that the heads of the fixing bolts 8 and nuts 9, which are inserted into the upper and lower ends of the bolt penetration holes 2 and 11 drilled at the four corners of pallet pieces a, b, c, and d, are on pallet piece a. , b, c, and d, so that the fixing bolts 8 and nuts 9 do not protrude onto the pallet surface when assembled.

Although not shown in the drawings, the pallet board may of course be formed into a rectangular shape, or the pallet pieces a, b, c, and d may be further connected to the pallet board.

〔Effect of the invention〕

Since the present invention is configured as described above, it has the following features.

1 A semi-cylindrical fitting protrusion 4 is attached to one half edge of the bolt penetration hole 2, 11 of the butt joint part 6 of the pallet pieces a, b, c, d and the protruding butt engagement part 7, and a half cylindrical fitting convex part 4 is attached to the opposite half edge. Since the cylindrical fitting recess 5 is formed, when the upper plate A and the lower plate B are butt-fitted, the upper plate A
The fitting protrusion 4 of the lower plate B is inserted into the fitting recess 5 of the lower plate B.
The fitting protrusion 4 of the upper plate A fits into the fitting concave member 5 of the upper plate A to form the bolt penetration holes 2 and 11.
and the lower plate B are fitted together without sliding forward, backward, left or right.

2. Since the same structure as the protruding abutment part 7 of pallet pieces a, b, c, and d is connected to the outside of the pallet pieces a, b, c, and d in an extended protruding state, the extended protruding part is connected to the adjacent pallet pieces a, b, and c. , d overlap the corners where there is no butt joint 6 to form the bolt penetration holes 2 and 11, so that adjacent pallet pieces a, b, c, and d of upper plate A and lower plate B may be misaligned. It will be connected correctly.

3 In this way, the bolts 8 are assembled into the bolt penetration holes 2 and 11 while preventing rattling in the vertical, longitudinal, horizontal, and lateral directions, and the fixing bolts 8 are inserted into the bolt holes 2 and 11, and the nuts 9 are screwed together, making it easy to connect and work. Even if the pallet pieces a, b, c, and d are of the type that is formed by joining together, all of the pallet pieces a, b, c, and d are properly tightened and connected without wobbling or shifting, and there are forks on each side. Two insertion grooves 10 are formed.

Therefore, the fork rod can be inserted into any of the four sides, making it easier to use.

4 In this way, eight pallet pieces a, b, c, d
By combining these to form a single pallet, the molding molds can be made smaller than conventional molding molds, which reduces mold manufacturing costs, and makes it easier to make pallet pieces a, b, c, and d, which makes the product easier to manufacture. It has excellent features such as being able to provide it at a low price and also having a strong bond that allows it to be used for a long time.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, and FIG. 1 is a perspective view of the lower board before assembly, FIG. 2 is an exploded perspective view of the upper and lower boards, and FIG. 3 is a perspective view of the upper and lower boards superimposed. FIG. 4 is a sectional view showing a state in which the pallet pieces are combined. a, b, c, d...Pallet piece, A...Top plate,
B... lower plate, 1... square plate, 2, 11... bolt penetration hole, 3... convex plate, 4... fitting convex part, 5... fitting recessed part, 6... butt joint part, 7... Protruding butt engaging portion, 8... Fixing bolt, 9... Nut, 10... Fork insertion groove.

Claims (1)

[Claims] 1. Bolt through holes are drilled at predetermined positions at the four corners of a square plate, and a convex plate with bolt through holes drilled in line with the bolt through holes in one corner is provided protruding integrally with the square plate, and the bolt through holes of this convex plate are A semi-cylindrical fitting protrusion is provided on the half edge of the insertion hole.
A semi-cylindrical fitting recess is formed on the opposite half edge to provide a butt-joint part, and a part of the same structure as the butt-joint part is placed in an extended protruding state at the opposite corner of the butt-joint part. Two pallet pieces a and b each have continuous protruding butt-engaging parts integrally protruding from a square plate, a butt-joining part is formed in one corner of the same square plate, and protruding butt-engaging parts are formed in both adjacent corners. Formed pallet pieces c and d
Four pallet pieces a, b, c, and d are placed adjacent to each other so that pallet pieces a, pallet piece b, and pallet piece c and pallet piece d are located on diagonal lines that intersect, respectively. The upper plate and the lower plate are arranged to form an upper plate and a lower plate, and the butt joint portion and the protruding butt engaging portion of the upper plate and the lower plate are butt-fitted, and a fastening bolt is inserted into the overlapping bolt penetration hole. A pallet for a forklift, characterized in that eight pallet pieces a, b, c, and d are joined together by inserting the fork and screwing together a nut, thereby forming two fork insertion grooves in a square shape.