JPH08301281A - Palette supporter - Google Patents

Abstract

PURPOSE: To obtain a palette supporter that is attached to a lower palette to bear an upper palette when the palettes loaded with goods are vertically stacked in two or more tires and is excellent in vibration resistance and load bearing property. CONSTITUTION: A pair of support frames 1A and 1B has support legs at both ends of upper crossbars 2A and 2B, and a palette supporter is used to cross the support frames 1A and 1B in an X-shape in top view and rect them on a palette. Metal plates 4A and 4B are fixed at intersections 21A and 21B of the upper crossbars 2A and 2B. A protrusion 5 having a non-circular horizontal cross section is provided on the metal plate 4B and a non-circular hole 6 corresponding to the shape of the protrusion 5 is made in the metal plate 4A. The protrusion 5 is fitted in the hole 6 so that the support frames 1A and 1B are crossed in an X-shape in top view.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pallet supporter which is mounted on a lower pallet for supporting the upper pallet when stacking cargo pallets loaded with cargo in a plurality of upper and lower tiers.

[0002]

[Prior art and its problems] Generally, pallet supporters are
A pair of support frames made of pipes having an upper horizontal rod and supporting legs at both ends thereof are combined in an X shape in a plan view, and each supporting leg is erected directly at the four corners of the pallet or through mounting brackets. There is. However, conventional general-purpose pallet supporters have a large amount of rattling when subjected to vibration while the pallets are stacked in a number of stages, and in particular, they can easily collapse when subjected to strong rolling such as earthquake motion. It was found that the earthquake resistance was extremely insufficient.

[0003]

[Means for Solving the Problems] In view of the above-mentioned circumstances, the inventors of the present invention first investigate the cause of the conventional pallet supporter being inferior in seismic resistance when investigating the structure of the pallet supporter excellent in seismic resistance. did. As a result, in the conventional pallet supporter, when the pallets are subjected to a strong rolling motion in a stacked state, the two upper horizontal rods arranged in a crossing swing to change the crossing angle in a wide and narrow manner. It was found that the tilting of the supporting columns could not support the load of the stacked upper pallets, resulting in collapse. Therefore, after further study based on this knowledge, by adopting a specific concavo-convex fitting structure at the intersection of both upper horizontal rods, the crossing arrangement state of both upper horizontal rods can be maintained even when subjected to strong rolling. It can be held unchanged, and the stability of the entire support frame is significantly improved to obtain high earthquake resistance. Also, the cross section of the upper horizontal rod has a specific cross-sectional shape and pipe shape, giving it excellent heat resistance and load strength. Therefore, the present invention has been completed, and the present invention has been completed.

That is, the pallet supporter according to the invention of claim 1 has a pair of support frames (1A) (1B) having upper horizontal rods (2A) (2B) and supporting legs (3) at both ends thereof. In the pallet supporter S constructed such that the rods (2A) and (2B) cross each other in an X shape in a plan view and the supporting legs (3) are erected at the four corners of the pallet P, both upper horizontal rods (2A). Metal plates (4A) and (4B) are fixed to the mutually facing surfaces of the intersections (21A) and (21B) of (2B), and a protrusion (5) having a non-circular cross section is provided on one of the metal plates (4B). And a non-circular fitting hole (6) corresponding to the cross-sectional shape of the projection (5) is formed on the surface of the other metal plate (4A), and this fitting hole (6) And the protrusions (5) are properly fitted so that the support frames (1A) and (1B) are arranged in an X shape in a plan view. Is made is configured.

According to a second aspect of the present invention, in the pallet supporter S according to the first aspect, the cross-sectional shape of the projection (5) and the shape of the fitting hole (6) are quadrangular.

According to a third aspect of the invention, in the pallet supporter S of the first or second aspect, both upper horizontal rods (2A) are provided.
(2B) is made of round pipe, and both upper horizontal rods (2A)
In the crossing portions (21A) and (21B) of (2B), a horizontal wall portion (22a) and substantially vertical wall portions on both sides of the horizontal wall portion (22a) where substantially half of the metal plate (4A) (4B) fixing side of the pipe is a metal plate fixing portion. This is a structure in which a rectangular shape (22) composed of parts (22b) and (22b) is crushed.

According to a fourth aspect of the present invention, in the pallet supporter S according to any one of the first to third aspects, the central portion including the crossing portion (21B) of the upper horizontal rod (2B) arranged on the lower side at the crossing position. (20) employs a configuration that is bent downwardly.

[0008]

According to the structure of claim 1, a pair of support frames (1A) (1) for the pallet supporter S mounted on the pallet P (1)
The upper horizontal rod (2A) is formed by fitting the protrusion (5) having a non-circular cross section into the corresponding non-circular fitting hole (6).
(2B) is locked at the crossing portions (21A) and (21B) so as to be relatively unrotatable and relatively immovable in the horizontal plane. Therefore, even if it receives strong rolling vibration such as earthquake motion, the crossing arrangement state of the upper lateral rods (2A) and (2B) does not change, so that the supporting legs (3) ... do not tilt and maintain the vertical state. , Very high earthquake resistance can be obtained. Also, the upper rod (2
Since the intersections (21A) and (21B) of (A) and (2B) are reinforced by the metal plates (4A) and (4B), the intersections (21) and (21B) are formed by forming the projections (5) and the fitting holes (6). 21
A) (21B) does not have strength reduction and has a large load bearing strength.

The cross-sectional shape of the protrusion (5) and the shape of the fitting hole (6) may be non-circular so that they can be fitted properly to each other, but the availability and workability of the material of the protrusion (5) and From the ease of processing the fitting hole (6), the square defined in claim 2 is particularly preferable.

According to the third aspect of the invention, the crossing portions (21A) (2) of the upper rods (2A) (2B) of the upper portion made of round pipes are connected.
1B) is composed of a horizontal wall portion (22a) in which approximately half of the metal plate (4A) (4B) fixed side of the pipe is a metal plate fixed portion and vertical side wall portions (22b) (22b) on both sides thereof. Since it is crushed into a square shape (22), it has higher compressive strength than when it is squeezed into a semi-circular shape by simply pressing the pipe from one direction, and it has load bearing strength and seismic resistance as a pallet supporter. The property is improved. By the way, if the round pipe itself has a vertical compressive strength of 1000 kg, a crushed product having a semicircular shape has a compressive strength of about 500 kg, whereas a crushed product having the rectangular shape (22) has a compressive strength of about 500 kg. A pressure resistance of 700 kg can be obtained.

According to the fourth aspect of the invention, the central portion (20) including the crossing portion (21B) of the upper horizontal rod (2B) arranged on the lower side at the crossing position is bent downward, and the central portion ( Two
0) Since the upper upper horizontal rod (2A) on the straight line passes above, both upper horizontal rods (2A) (2B) can be placed horizontally and crossed without any height difference. Therefore, when the pallets P are stacked on this pallet supporter S, the load of the upper pallet P can be evenly supported by the entire upper rods (2A) (2B), and the intersections (21A) (21B). The strain due to the concentration of load on the core does not occur, and the load bearing strength is improved.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The drawings show a pallet according to an embodiment of the present invention.
The supporter S is shown. The pair of support frames (1A) and (1B) constituting the pallet supporter S are respectively attached to the lower sides of both ends of the upper horizontal rods (2A) and (2B) made of a round pipe, and the supporting legs (3) made of the round pipe. (3) has a U-shaped frame that is welded and fixed by abutting the upper end portion of the concave arc shape. Therefore, as shown in FIG. 1, the pallet supporter S has both support frames (1
A) The upper horizontal rods (2A) and (2B) of (1B) are intersected with each other in the center in an X-shape in plan view, and the lower ends of the supporting legs (3) are provided with supporting leg standing holes H at the four corners of the pallet P. , And is locked by a collar (3a) provided on the supporting leg (3) to stand on the pallet P.

Upper horizontal rod (2A) of one supporting frame (1A)
Is an upper horizontal rod (2) of the other supporting frame (1A) at the crossing position.
It is arranged on the upper side of A). As shown in FIGS. 5 to 7, the crossing portion (21A) of the upper horizontal rod (2A) is formed by crushing a round pipe so that the lower half of the horizontal wall portion (22a) forms a bottom surface and vertical portions on both sides thereof. Side wall (22b)
(22b) and a rectangular shape (22), the upper half of which is formed into a semicircular shape (23) which is the original shape of the pipe, and a circular hole (24) at the center of the horizontal wall (22a). Has been drilled. A thick metal plate (4A) such as an iron plate having a square fitting hole (6) is welded and fixed to the horizontal wall portion (22a), and the fitting hole (6) is a circle. It is set to fit inside the hole (24).

Upper horizontal rod (2B) of the other support frame (1B)
Is arranged on the lower side at the crossing position, and as shown in FIGS. 8 and 9, the central portion (20) is bent downward to form a convex shape by bending the round pipe, and the lower portion of the crossing portion is bent. It constitutes the section (21B). This intersection (21
B) is a horizontal wall portion (22a) whose upper half is an upper surface and vertical side walls on both sides thereof, which are formed by crushing a round pipe, upside down from the intersecting portion (21A) of the upper horizontal rod (2A) described above. Forming a square (22) consisting of parts (22b) and (22b),
The lower half portion is formed to have a semicircular shape (23), and a thick metal plate (4B) such as an iron plate is welded and fixed to the horizontal wall portion (22a). The metal plate (4B) has a protrusion (5) in which only the top portion (5a) of the regular square pole is truncated cone.
The projection (5) is provided at the intersection (21A) of the upper horizontal rod (2A) in the one support frame (1A).
The size and the direction are set so that the fitting hole (6) can be fitted properly.

The intersection (21) of the upper horizontal rods (2A) (2B)
In order to make (A) (21B) into the above-mentioned cross-sectional shape by crush molding, a round pipe is pressed from one direction and the horizontal wall (22) is pressed.
When forming a), the round pipe is housed in a die having, for example, a U-shaped cross section and pressed to prevent bulging to both sides due to crushing of the pipe, so that the horizontal wall portions (22a) are provided on both sides. Vertical sidewall portions (22b) (22b)
b) should be produced. In addition, when swelling to both sides is not restricted in the above crushing, the horizontal wall portion (22a)
It is not preferable because bulging portions having a U-shaped or V-shaped cross section are formed on both sides of the bulge, and the vertical compressive strength is significantly reduced.

At both ends of the upper horizontal rod (2A) (2B), as shown in FIG. 1, and as shown in FIGS. 5 and 6 as one of the upper horizontal rods (2A) as a representative, A bearing member (7) consisting of a U-shaped frame portion (7a) covering the upper half of the pipe peripheral surface and a cap portion (7b) covering the open end surface of the round pipe is welded and fixed. This support member (7)
It is manufactured by punching and bending a single metal plate, and a large number of anti-slip projections (71) are formed on the horizontal bearing surface (70) which is the upper surface of the U-shaped frame portion (7a). Has been done.

When the pallet supporter S having the above-described structure is erected on the pallet P, the upper horizontal rods (2A) and (2B) of the support frames (1A) and (1B) are X-shaped in plan view at the center. 3 and 4, at this time, as shown in FIGS. 3 and 4, the projection (5) of the lower horizontal rod (2B) is fitted to the fitting hole (2A) of the upper horizontal rod (2A). 6) Fit. By this fitting, the upper horizontal rods (2A) and (2B) are locked so that they cannot rotate relative to each other and cannot move relative to each other in the horizontal plane, so that the upper horizontal rods (2A) and (2B) are in a constant crossover arrangement state.

It should be noted that both upper horizontal rods (2A) and (2B) have their crossing portions (21A) (21A) in the above-mentioned crossing arrangement state.
The metal plates (4B) and (4B) of (B) are joined to each other as shown in FIG. 4, and the recessed central portion (2) of the upper horizontal rod (2B) is connected.
Except for 0), dimensions are set so that the heights of both are the same. Further, the both support frames (1A) and (1B) have upper horizontal rods (2A) (2A) (2A) so that the lower end positions of the support legs (3) in the crossed arrangement state match the support leg standing holes H of the pallet P.
The crossing angle of B) and the distance between the supporting legs (3) and (3) are set.

Thus, the pallet supporter S, in which the upper horizontal rods (2A) (2B) are arranged in an X-shape in plan view, is mounted on the pallet P by inserting them into the fulcrum standing holes H of the fulcrums (3). For example, another pallet P can be placed on the pallet supporter S as shown by the phantom line in FIG. Furthermore,
By mounting the same pallet supporter S on the placed pallet P, it is possible to stack three or more tiers.

The pallet supporter S mounted on the pallet P in this manner receives the strong lateral vibration such as earthquake motion in a stacked state in which other pallets P are placed on the upper pallet rod (2A) ( 2B) does not change the crossing angle due to the fitting of the protrusion (5) and the fitting hole (6), and thus the supporting legs (3) ... maintain the vertical state without tilting, which is excellent in stability and collapses. It is difficult to do and exhibits extremely high earthquake resistance. In addition, in this pallet supporter S, the upper rod (2A)
The intersections (21A) and (21B) of (2B) are metal plates (4
A) (4B) is reinforced, and the half portion of the round pipe is a horizontal wall portion (22a) and vertical side wall portions (22b) (2) on both sides thereof.
2b) has a rectangular shape (22), the cross-sections (21A) and (21B) have a large pressure resistance, and both upper horizontal rods (2A) and (2B) are horizontal and are arranged in a horizontal manner without any difference in height. However, the load of the upper pallet P stacked on the upper pallet P is evenly supported by the entire upper rods (2A) and (2B), and there is no distortion due to the load concentration on the intersections (21A) and (21B). , Very high load capacity can be obtained.

In the above-mentioned embodiment, the upper horizontal rod (2B) located on the lower side at the crossing position is provided with the projection (5), and the upper horizontal rod (2A) located on the upper side is provided with the fitting hole (6). On the contrary, a fitting hole (6) may be provided in the lower upper horizontal rod (2B) and a protrusion (5) may be provided in the upper horizontal rod (2A). Also protrusions (5)
Although the cross-sectional shape and the fitting hole (6) are square in the embodiment, they may be non-circular, and various shapes such as a triangle, a pentagon or more polygon, a rhombus, an ellipse, a rectangle, and a cross. The shape can be set.

On the other hand, in the support frame of the embodiment, the upper horizontal rod and the supporting legs on both sides are integrated by welding. However, the upper horizontal rod and the supporting legs are provided separately and are connected at the time of assembling the pallet supporter. It may be configured. Further, in the embodiment, in order to improve the placement stability of the pallets P to be piled up, the support member (7) having the anti-slip projections (71) at both ends of the upper horizontal rod.
However, instead of this, both ends of the upper horizontal rod may be simply covered with a cap, or a slip stopper such as a rubber sheet may be provided. The pallet supporter of the present invention can be applied to other than the exemplified synthetic resin pallet P. For example, in the case of a wooden pallet, the supporting legs may be erected on the four corners through appropriate mounting metal fittings.

[0023]

According to the first aspect of the present invention, as a pallet supporter, the upper horizontal rods of the pair of support frames are appropriately fitted with projections having a non-circular cross section and non-circular fitting holes at the intersections. Since the pallets are stacked on top of each other in an X-shape, the crossing angle of the upper horizontal rod does not change and the vertical state of the fulcrum is maintained even when subjected to strong rolling vibration such as seismic motion. Thus, it is possible to provide the one that is not easily collapsed and has a very high earthquake resistance, and that the crossing portion of the upper horizontal rod has a large strength, so that the load resistance is excellent.

According to the second aspect of the present invention, there is provided the above-mentioned pallet supporter which can be easily manufactured at a low cost, particularly in the process of the intersection of the upper horizontal rod.

According to the invention of claim 3, as the pallet supporter using the round pipe for the upper horizontal rod, the pallet supporter has a particularly large pressure resistance because the intersecting portion of the upper horizontal rod has a specific cross-sectional shape. As a result, a load bearing having a higher load resistance is provided.

According to the fourth aspect of the present invention, as the pallet supporter, since the central portion of the upper horizontal rod arranged on the lower side at the intersecting position is bent downwardly, both upper horizontal rods are bent. Are horizontally arranged without any difference in height, and the load of the stacked upper pallets can be evenly supported by the entire upper and lower rods, thus providing greater load-bearing strength and greater earthquake resistance. .

[Brief description of drawings]

FIG. 1 is a perspective view showing a state in which a pallet supporter according to an embodiment of the present invention is erected on a pallet.

FIG. 2 is a partially cutaway plan view showing an intersection of upper horizontal rods of the pallet supporter.

FIG. 3 is a perspective view showing a state in which an intersecting portion of upper horizontal rods of the pallet supporter is vertically separated.

4 is a cross-sectional view taken along the line IV-IV of FIG.

FIG. 5 is a side view of one upper horizontal rod of the pallet supporter.

FIG. 6 is a plan view of the upper horizontal rod.

FIG. 7 is a sectional view taken along line VII-VII of FIG.

FIG. 8 is a side view of the central portion of the other upper horizontal rod of the pallet supporter.

9 is a sectional view taken along the line IX-IX in FIG.

[Explanation of symbols]

 1A, 1B ・ ・ ・ Support frame 2A, 2B ・ ・ ・ Upper horizontal rod 3 ・ ・ ・ Support legs 4A, 4B ・ ・ ・ Metal plate 5 ・ ・ ・ Protrusion 6 ・ ・ ・ Engagement hole 20 ・ ・ ・ Central part 21A, 21B ... Crossover 22 ... Square 22a ... Horizontal wall 22b ... Vertical wall P ... Pallet S ... Pallet supporter

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[Procedure amendment]

[Submission date] July 21, 1995

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0013

[Correction method] Change

[Correction content]

Upper horizontal rod (2A) of one supporting frame (1A)
Is an upper horizontal rod (2) of the other supporting frame (1 B ) at the crossing position.
It is arranged on the upper side of B ). As shown in FIGS. 5 to 7, the crossing portion (21A) of the upper horizontal rod (2A) is formed by crushing a round pipe so that the lower half of the horizontal wall portion (22a) forms a bottom surface and vertical portions on both sides thereof. Side wall (22b)
(22b) and a rectangular shape (22), the upper half of which is formed into a semicircular shape (23) which is the original shape of the pipe, and a circular hole (24) at the center of the horizontal wall (22a). Has been drilled. A thick metal plate (4A) such as an iron plate having a square fitting hole (6) formed therein is welded and fixed to the horizontal wall portion (22a), and the fitting hole (6) is circular. It is set to fit inside the hole (24).

Claims (4)

[Claims] 1. A pallet constructed such that a pair of support frames having an upper horizontal rod and supporting legs at both ends thereof are crossed in an X shape in a plan view between the upper horizontal rods so that each supporting leg is erected at four corners of the pallet.・ In the supporter, metal plates are fixed to the mutually opposing surfaces at the intersections of both upper horizontal rods, one metal plate surface is provided with a protrusion having a non-circular cross-section, and the other metal plate surface Has a non-circular fitting hole corresponding to the cross-sectional shape of the projection, and the fitting hole and the projection are appropriately fitted so that both support frames are arranged in an X shape in a plan view. Palette supporter 2. The pallet supporter according to claim 1, wherein the cross-sectional shape of the protrusion and the shape of the fitting hole are square. 3. Both upper horizontal rods are made of round pipes, and at the intersection of both upper horizontal rods, substantially half of the pipes on the metal plate fixing side are horizontal wall portions to which the metal plates are fixed and both sides thereof. The pallet supporter according to claim 1 or 2, wherein the pallet supporter is formed by crushing into a rectangular shape including a vertical side wall portion of the. 4. The pallet supporter according to claim 1, wherein a central portion including an intersecting portion of the upper horizontal rod arranged on the lower side at the intersecting position is bent downward.