JP7442188B2 - Support frame for stacking transport pallets - Google Patents

Description

The present invention relates to a support frame for stacking transport pallets.

A plurality of support frames for stacking that enable stacking of cargo on a transport pallet are known, as in Patent Documents 1 and 2. In the conventional support frame, the transport pallet was generally surrounded by a lattice frame on all four sides.

Japanese Patent Application Publication No. 9-2472 JP2015-209218A

When all four sides of a transport pallet are surrounded by lattice-shaped frames as in the case of conventional support frames, it is difficult to provide size versatility for changing the size of the transport pallet to which the support frame is attached. For this reason, if the size of the transport pallet changes, it becomes impossible to attach the support frame. Therefore, it is necessary to prepare multiple types of support frames corresponding to multiple sizes of transport pallets, which has been an obstacle to reducing the cost of support frames.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a support frame for stacking that is versatile in size.

In order to solve the above-mentioned problems, the stacking support frame of the present invention is a support that allows transport pallets, each of which has a pair of left and right fork pockets on opposing sides, to be stacked with a load placed on the pallet. The support frame has four pillar units that are removably installed at the four corners of the transport pallet, and each pillar unit includes a pillar part that constitutes the main body of the pillar unit, and a pillar part that constitutes the main body of the pillar unit. legs that can be inserted into and fixed in the fork pockets at the lower ends of the pillars; brackets that can support the four corners of the upper transport pallet that are located at the upper ends of the pillars; It has a first connecting cross member and a second connecting cross member extending toward the other two pillars facing each other in the side direction of the transport pallet, and the tips of the first connecting cross member and , the tip ends of the second connecting cross members are capable of being connected by the first locking member in a state in which they overlap each other so as to be relatively slidable.

According to the present invention, it is possible to realize a support frame that is versatile in size.

FIG. 1 is a perspective view of a stacking support frame according to an embodiment of the present invention attached to a transport pallet. FIG. 3 is an enlarged perspective view of the top of the support frame. (a) is an exploded perspective view of a support frame attached to a square transportation pallet, and (b) is an exploded perspective view of a support frame attached to a rectangular transportation pallet. It is a perspective view which shows the state in which the support frame is attached to each (a) square and (b) rectangular transport pallet. FIG. 2 is a perspective view showing a state in which two square transport pallets are stacked using support frames. FIG. 2 is a perspective view showing a state in which two rectangular transport pallets are stacked using support frames. They are (a) a perspective view and (b) a sectional view seen from direction B of a leg portion provided with a retaining claw portion.

Hereinafter, one embodiment of the present invention will be described with reference to the drawings. In addition, by attaching the same reference numerals to the same or corresponding parts throughout all the figures, duplicate explanations will be omitted as appropriate.

(Overall configuration of support frame for stacking)
FIG. 1 is a perspective view showing a stacking support frame 100 according to an embodiment of the present invention attached to a transport pallet 200 from which cargo has been removed. The transport pallet 200 is a rectangular plate-shaped resin molded product, and has a two-layer structure including an upper layer 210 and a lower layer 220.

The transport pallet 200 differs in length and width depending on the product number, and may be square or rectangular. Although the conventional support frame did not have size versatility, the support frame 100 according to the present invention has size versatility.

The transport pallet 200 has an upper layer 210 and a lower layer 220 in a mesh shape to reduce weight. Between the upper layer section 210 and the lower layer section 220, four corner sections 230 and an intermediate section 240 located at the center of each side are arranged.

A predetermined space is maintained between the upper layer section 210 and the lower layer section 220 by the corner sections 230 and the intermediate section 240. A pair of left and right fork pockets 250 are formed between the left and right corner portions 230 and the intermediate portion 240, into which a pair of left and right forks of a forklift are inserted. The fork pockets 350 are compatible with four-sided insertion, and are formed on the four sides of the transport pallet 300.

The support frame 100 has four pillar units 110. An integrated support frame 100 is constructed by horizontally interconnecting the four support units 110.

These support units 110 are connected in pairs by a first connecting cross member 111 and a third connecting cross member 113, as will be described later, and are then removably installed upright at the four corners of the transport pallet 200. The two strut units 110 arranged diagonally on the transport pallet 200 have the same shape, and the two strut units 110 arranged on the left and right in the side direction of the transport pallet 200 have a mutually symmetrical shape.

Each pillar unit 110 has a pillar part 110a that constitutes the main body of the pillar unit 110. A leg portion 115 that can be inserted and fixed into the fork pocket 250 from the horizontal direction is attached to the lower end of the column portion 110a at a substantially right angle.

The leg portion 115 is formed by bending a rectangular sheet metal into a U-shaped cross section, and includes an upper plate portion 115a, a lower plate portion 115b, and a connecting plate portion 115c. The upper plate portion 115a is screwed or welded to the lower surface of the third connecting cross member 113, and the connecting plate portion 115c is attached to the side surface of the lower end of the column unit 110, respectively. Further, the connecting plate portion 115c comes into contact with the inner surface of the fork pocket 350 (the side surface of the corner portion 230).

On the other hand, as shown in FIGS. 2 and 4, a receiving metal fitting 150 capable of supporting the four corners of the upper transport pallet 200 is attached to the upper end of the column portion 110a. In addition, a first connecting cross member 111 extends horizontally from one side of the upper end of the column 110a toward the other column 110a facing in the side direction of the transport pallet 200 (left-right direction in FIG. 1). There is. As shown in FIG. 2, the leading ends of the first connecting cross members 111 of the left and right column units 110 can be connected by a lock pin 112 as a first locking member in a state in which they are overlapped so as to be relatively slidable. ing.

This lock pin 112 has a ball at its tip that is biased radially outward by a spring. After the ball passes through the insertion hole (lock hole) of the lock pin 112, it protrudes toward the outer diameter side, thereby preventing the lock pin 112 from coming out.

Specifically, an insertion shaft having a plurality of lock holes equally spaced in the longitudinal direction is fixed to the tip of one of the first connecting cross members 111 (see FIG. 3A(b)). After this insertion shaft is inserted into the tip of the other first connecting cross member 111 so as to be able to slide relative to it in a nested manner, the lock pin 112 of the other first connecting cross member 111 is inserted into the predetermined lock hole. By inserting, the tips of the first connecting cross members 111 are connected to each other.

Similarly, a third connecting cross member 113 extends horizontally from one side of the lower end of the column 110a toward the other column 110a facing in the side direction (left-right direction in FIG. 1) of the transport pallet 200. ing. As shown in FIG. 2, the leading ends of the third connecting cross members 113 of the left and right support units 110 can be connected to each other by a lock pin 114 as a second lock member in a state where they are overlapped so as to be relatively slidable. ing.

An L-shaped frame 130 is removably attached to the upper end of the column 110a. The receiving metal fittings 150 are integrally formed at the corners of this L-shaped frame 130. As shown in FIG. 2, the L-shaped frame 130 has a second connecting cross member 131 extending horizontally and a connecting longitudinal member 132 extending vertically downward.

The second connecting cross member 131 is arranged at a higher position than the first connecting cross member 111 described above, and is connected to the other column portion 110a facing from the receiving metal fitting 150 in the side direction of the transport pallet 200 (front-back direction in FIG. 2). It extends in the horizontal direction toward the receiving metal fitting 150. The leading ends of the second connecting cross members 131 can be connected to each other by another lock pin 135 as a first locking member in a state where they overlap each other so as to be relatively slidable. By arranging the second connecting cross member 131 at a high position as described above, it is possible to carry out side loading and unloading of the cargo W as shown in FIGS. 4 and 5.

The connecting vertical member 132 has an insertion shaft 132a extending downward, as shown in FIGS. 3A(a) and 3(b). The insertion shaft 132a is vertically inserted into and connected to the upper end of the column 110a in a detachable manner.

(Attachment of support frame 100)
The support frame 100 is configured as described above, and the support frame 100 is mounted horizontally on the transport pallet 200 as shown by the arrows in FIGS. 3B(a) and (b). FIG. 3B (a) shows a square transportation pallet 200, and FIG. 3B (b) shows a rectangular transportation pallet 300. Prior to the mounting shown in FIG. 3B, the pair of left and right support columns 110 are first connected in pairs by the first connecting cross member 111 and the third connecting cross member 113.

That is, the leading ends of the first connecting cross members 111 and the leading ends of the third connecting cross members 113 that face each other in the side direction of the transport pallet 200 (300) are inserted in a nested manner. The tips are connected to each other by lock pins 112 and 114 at a predetermined position corresponding to the size of the transport pallet 200 (300). By connecting the support units 110 in pairs in this way, a rectangular frame structure that is placed on one surface of the transport pallet 200 (300) is created.

The height of the third connecting cross member 113 is the same height as the top surface height of the upper part 210 of the transport pallet 200 (300). Further, the inner surface of the third connecting cross member 113 abuts the outer surface of the transport pallet 200 (300). Therefore, in the stacked state shown in FIGS. 4 and 5, the third connecting cross member 113 does not interfere with the cargo W.

The legs 115 at the lower end of the rectangular frame structure in which two pillar units 110 are arranged are inserted into the fork pockets 250 of the transport pallet 200 (300) and fixed. The vertical height of the leg portion 115 is set to correspond to the vertical height of the fork pocket 250.

As a result, once the leg portion 115 is firmly inserted into the fork pocket 250, it is firmly fixed to the fork pocket 250 to the extent that the leg portion 115 cannot be easily removed. By providing a gentle downward taper or upward taper on the upper or lower surface of the leg portion 115, the leg portion 115 can be more firmly fixed to the fork pocket 250. Further, as will be described later with reference to FIG. 6, by providing a retaining claw portion 115d on the lower surface of the leg portion 115, it is possible to securely fix the leg portion 115 to the fork pocket 250 (prevent the leg portion from coming off).

After the leg portion 115 is fixed to the fork pocket 250 and the column unit 110 is erected, the L-shaped frame 130 is connected to the upper end of the column portion 110a. That is, the insertion shaft 132a at the lower end of the connecting vertical member 132 of the L-shaped frame 130 is inserted and connected to the upper end of the column 110a from the vertical direction. When the transport pallets 200 are stacked on the upper tier, there is no risk that this connecting portion will come off upward even if it is not screwed, but it may be screwed or fixed with a lock pin if necessary.

Finally, the tips of the second connecting cross members 131 of the L-shaped frame 130 are stacked telescopically so as to be relatively slidable, as shown in FIG. 2, and are connected with a lock pin 135. The connection position of the lock pin 135 is a predetermined position corresponding to the size of the transport pallet 200. Since the size of the transport pallet 200 usually varies slightly, it is preferable to finely adjust the connecting positions of the lock pins 112, 113, and 135 while the support frame 100 is attached at the site.

Although FIGS. 3B(a) and (b) show the empty transport pallet 200, in reality, as shown in FIGS. 4 and 5, the lower transport pallet 200 (300) is loaded with cargo W. The support frame 100 is attached to (300). Thereafter, the upper transport pallet 200 (300) containing the cargo W is stacked on the receiving metal fittings 150 at the four corners of the upper end of the support frame 100.

The receiving metal fitting 150 has a horizontal rectangular plate-shaped support surface 151 and an L-shaped positioning plate portion 152 that stands up from two orthogonal outer sides of the support surface 151. The lower surfaces of the four corner portions 230 of the upper transport pallet 200 are supported by the support surface 151. In addition, the two orthogonal outer surfaces of the corner portion 230 abut against the positioning plate portion 152 to prevent the upper transport pallet 200 (300) from shifting in the lateral direction.

The support frame 100 according to the embodiment of the present invention has size versatility that allows the same support frame 100 to be used even if the size of the transport pallet 200 (300) changes. Assume that the transport pallets 200 stacked as shown in FIG. 4 have a square size of, for example, 1100 mm x 1100 mm, and the transport pallets 300 stacked as shown in FIG. 5 have a rectangular size of, for example, 1200 mm x 1100 mm. In this case, the connecting positions of the upper and lower lock pins 112 and 114 on the front side are each extended by 100 mm.

3A(b) and FIG. 3B(b) show how the support frame 100 is attached to such a rectangular transportation pallet 300. This rectangular transportation pallet 300 also has corner portions 330, intermediate portions 340, and fork pockets 350, similar to the square transportation pallet 200. Note that the fork pockets 350 are two-way compatible and are formed on two opposing sides of the transport pallet 300.

Furthermore, although FIGS. 4 and 5 show the transport pallets 200 and 300 stacked in two stages, the transport pallets 200 and 300 can also be stacked in three or more stages. In addition, in the stacked state shown in FIGS. 4 and 5, since there is no connecting cross member that connects the lower ends of the column units 110 to each other in the horizontal direction shown by the arrow, it is also possible to take in and out the cargo W in the lower tier in the direction of the arrow. It is possible.

In contrast, conventional transportation pallets are surrounded by grid-like support frames on all four sides, making it difficult to load and unload cargo from the sides of the pallet. If a door is provided in a part of the lattice frame, cargo can be taken in and out from there, but this would complicate the structure of the support frame, resulting in an increase in the number of parts and cost. In this embodiment, since two directions of the support frame 100 are open, the cargo W can be taken in and out in the directions of the arrows.

(Claws to prevent leg from coming out)
6(a) and 6(b) are examples in which the aforementioned leg portion 115 is provided with a retaining claw portion 115d, and FIG. 6(b) is a cross-sectional view seen from the direction of arrow B in the perspective view of FIG. 6(a). It is. That is, a retaining claw portion 115d is provided at the edge of the lower plate portion 115b of the leg portion 115, and after the leg portion 115 is inserted into the fork pocket 250, the retaining claw portion 115d is bent vertically downward.

Then, the lower end portion of the bent claw portion 115d is engaged with the mesh hole 220a of the lower layer portion 220 of the transport pallet 200, as shown in FIG. 6(b). This prevents the leg portion 115 from coming out of the fork pocket 250.

Note that the upper plate portion 115a of the leg portion 115 may also be provided with a similar retaining claw portion, and the claw portion may be bent vertically upward and engaged with a mesh hole in the upper layer portion 210 of the transport pallet 200. The claw portions 115d of the upper plate portion 115a and the lower plate portion 115b may be used not only to prevent the leg portions 115 from falling out, but also to prevent the pair of left and right support units 110 from approaching depending on the engagement position with respect to the mesh hole. is also possible.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above embodiments and can be modified in various ways. For example, in the embodiment described above, each column unit 110 is connected laterally by three connecting cross members 111, 131, and 113, but the third connecting cross member The cross member 113 can also be omitted. That is, when the leg portion 115 is firmly fixed to the fork pocket 250 by using the retaining claw portion 115d as described above, the third connecting cross member on the lower side of the first connecting cross member 111 The material 113 can be omitted if it is not absolutely necessary in terms of strength.

Furthermore, in the embodiment described above, the L-shaped frame 130 is made separate from the column 110a and integrated by being inserted into and connected to the column 110a. This is to do so. Therefore, if there is sufficient storage space, it is also possible to configure the support unit 110 including the L-shaped frame 130 in one piece.

100: Stacking support frame 110: Support unit 110a: Column portion 111: First connecting cross member 112, 135: Lock pin (first lock member)
114: Lock pin (second lock member)
113: Third connecting horizontal member 115: Leg portion 115a: Upper plate portion 115b: Lower plate portion 115c: Connecting plate portion 115d: Removal prevention claw portion 130: L-shaped frame 131: Second connecting horizontal member 132: Connection Vertical member 132a: Insertion shaft 135: First locking member 150: Receiving metal fitting 151: Support surface 152: Positioning plate portion 200, 300: Transport pallet 200, 300: Transport pallet 210: Upper part 220: Lower part 220a: Mesh Hole 230, 330: Corner part 240, 340: Middle part 250, 350: Fork pocket W: Load

Claims (5)

A support frame that enables transport pallets having a pair of left and right fork pockets on opposing sides to be stacked with cargo loaded on the pallets, the support frame comprising:
The support frame has four support units that are removably installed at the four corners of the transport pallet, and each support frame includes:
A pillar part that constitutes the main body of the pillar unit;
A leg portion located at the lower end of the pillar portion and capable of being inserted and fixed into the fork pocket;
a receiving metal fitting located at the upper end of the pillar and capable of supporting the four corners of the upper transport pallet;
a first connecting cross member and a second connecting cross member extending from the upper end side surface of the pillar portion toward the other two pillar portions facing each other in the side direction of the transport pallet ;
and a third connecting cross member extending below the second connecting cross member from a side surface of the lower end of the column toward the other two pillars facing in the side direction of the transport pallet. ,
The distal ends of the first connecting cross member and the distal ends of the second connecting cross member can be connected by a first locking member in a state in which they overlap so as to be relatively slidable, respectively ,
The tips of the third connecting cross members can be connected to each other by a second locking member in a state where they are overlapped in a nested manner,
A retaining claw portion that engages with the fork pocket of the transport pallet is formed on the leg portion,
The third connecting cross member is arranged to match the height of the upper surface of the transport pallet, and the leg portion is inserted and fixed into the fork pocket, and the retaining claw portion is engaged with the fork pocket. In this state, the third connecting cross member abuts against the side surface of the transport pallet.
A support frame characterized by: 2. The support frame according to claim 1, wherein the distal ends of the first connecting cross members and the distal ends of the second connecting cross members can be nested together. The receiving metal fitting is disposed at the base end of the first connecting cross member, and the insertion shaft provided at the lower part of the receiving metal fitting is removably inserted and connected to the upper end of the column part. The support frame according to claim 1 or 2, characterized in that: 4. The support frame according to claim 3, wherein the second connecting cross member is connected to the column portion at a higher position than the first connecting cross member. The support frame according to claim 1 , wherein the first locking member and the second locking member are locking pins.

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