JP2003231524A - Steel skid - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rigid and long life steel skid for placing an item to be transported thereon, which secures the quality of the bottom face of the item, is easily assembled and disassembled and does not break up when in use for superior workability. <P>SOLUTION: At a cross-shaped crossing part of an intermediate top frame beam and right and left bottom frame beams, the top frame beam is caught between catching metal pieces fixed in the middle of the bottom frame beams. Positioning metal pieces fixed at the right and left ends of the top frame beam regulate the right and left directional position of the top frame beam. At T-shaped crossing parts where the front and back top frame beams and the right, left and intermediate bottom frame beams cross, an L-shaped connecting metal piece fixed on the top frame beams connects the top frame beam and the bottom frame beam. Moreover, at the four corner crossing parts, wire contacting metal pieces are positioned to be outside of the side face of the bottom frame beam. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a steel skid for mounting and transporting objects such as rectangular objects and coiled objects in which thin plates are laminated.

[0002]

2. Description of the Related Art Conventionally, a wooden underframe has been used as an underframe on which the above-mentioned objects are placed and transported. In recent years, the price of wooden underframes has risen due to the exhaustion of wood resources, and because wooden underframes have the drawback of requiring manual disposal after use, they are cheaper and more recyclable instead of wooden underframes. Excellent steel underframes (hereinafter referred to as steel skids) are being used frequently.

[0003] Steel skids are usually used for transporting objects, then disassembled, stored until the next use, and reassembled at the time of use. At that time, since the disassembly / assembly is performed manually, the steel skid needs to be easy to disassemble / assemble. For example, a steel skid that can be disassembled and assembled is known as shown in FIG. This steel skid is disclosed in Japanese Utility Model Publication No. 55-16850, in which one of a plurality of upper frame rods 1 and a plurality of lower frame rods 2 arranged at intervals is cross-shaped. A pair of locking metal fittings 3, 3'is fixed to the frame rod, and the other frame rod is press-fitted between the pair of locking metal fittings 3, 3 '.
In addition, at the T-shaped intersection between the upper frame rod 1 and the lower frame rod 2, the insertion connecting metal fitting 100 fixed to the intermediate portion of one frame rod.
A wedge-shaped insertion portion 100A having a downward opening groove shape in section is press-fitted to the opening end of the other frame rod.

However, in such a type of steel skid, at the time of assembly, the intermediate upper frame rod 1 is locked with the metal fittings 3,
It is easy to press fit between 3'as shown in FIG. 18, but as shown in FIG.
The 0A is press-fitted into the opening end of the lower frame rod 2 because the outer dimension of the wedge-shaped insertion portion 100A is larger than the opening dimension of the lower frame rod 2. Wedge-shaped insertion part 100A
It was difficult to insert and the workability was poor.

Further, during assembly, it takes time and effort to adjust the position of the intermediate upper frame rod 1 in the left-right direction, and further, the locking metal fittings 3 and 3 '.
There is also a problem that workability is deteriorated when the steel upper skid is disassembled by detaching the middle upper frame rod 1 leftward or rightward when the steel skid is transported, because it is simply press-fitted between the two. Furthermore, the above conventional steel skids
When the length in the left-right direction is long, there is no middle lower frame rod, so depending on the weight of the object, when hanging with a wire,
There is also a problem that the workability is poor because the steel skid bends in the plane and the suspended load becomes unstable.

[0006] Further, in the steel skid of this type, when an object is transported and lifted by a wire, an external force is applied from the wires along the lower frame rods 2 on the left and right of the steel skid through the lower frame rod 2. There is also a problem that even if the weight of the object is limited, the period for repeated use is short and the life is short because it acts on the insertion connecting metal fitting 100.

[0007]

SUMMARY OF THE INVENTION An object of the present invention is to eliminate the above-mentioned problems of the prior art. It is possible to secure the bottom quality of an object to be placed and transported, and to disassemble and disassemble the object. An object of the present invention is to provide a steel skid that is easy to assemble, can be prevented from being disassembled during use, has excellent workability, and has a long life and high rigidity.

[0008]

DISCLOSURE OF THE INVENTION The inventors of the present invention arranged an intermediate lower frame rod on the conventional steel skid described above and connected the upper frame rod 1 and the lower frame rod 2 with a connecting structure. The present invention was completed based on the finding that the above problem can be solved by using a connecting structure that smoothly inserts using a connecting metal fitting instead of a structure in which the wedge-shaped insertion portion 100A of the connecting metal fitting 100 is press-fitted. It was

According to the present invention, at least three square steel pipe upper frame rods arranged side by side at front and rear intervals and at least three square steel pipe lower frame rods arranged side by side at left and right intervals. At the cross-shaped intersection of the middle upper frame rod and the left and right lower frame rods, the upper frame rod is locked between the locking metal fittings fixed to the middle of the lower frame rod, and The lateral position of the upper frame rod is restricted by positioning metal fittings fixed to the left and right end portions of the frame rod, and the upper and lower T-shaped intersections of the front and rear upper frame rods with the left and right and intermediate lower frame rods The upper frame rod and the lower frame rod are connected to each other by the L-shaped coupling fittings fixed to the frame rod, and further, at the intersections of the four corners, the wire contact fittings are located outside the side surfaces of the lower frame rod. It is a steel skid characterized by being provided.

With this configuration, the above problems have been solved.
Also, in the present invention, the connection structure in the T-shaped crossing portion is such that the vertical portion of the L-shaped connecting fitting is fixed to the outer side surface of the upper frame rod and the insertion portion of the L-shaped connecting fitting is of the lower frame rod. It is preferable to have a structure in which the opening end is inserted from the outside because the connection structure is simple. Further, in the T-shaped crossing portion, the vertical portion of the reinforcing metal fitting is located inside the upper frame rod. It is more preferable that the horizontal portion of the reinforcing metal member is fixed to the end portion of the lower frame rod because the rigidity against external force from the outside can be increased.

Still further, according to the present invention, in the connection structure at the T-shaped crossing portion, the vertical portion of the L-shaped connecting fitting is fixed to the inner side surface of the upper frame rod, and the insertion portion of the L-shaped connecting fitting is provided. The structure that is inserted from the inside into the receiving metal fitting attached to the side surface of the end of the lower frame rod is that the upper frame rod and the lower frame rod can be connected with a simple connection structure, and It is preferable because it has resistance to decomposition against external force.

Further, according to the present invention, at least three square steel pipe upper frame rods arranged side by side at front and rear intervals, and at least three square steel pipe lower frame rods arranged side by side at left and right intervals. And at the intersection of the upper frame rod and the lower frame rod,
A metal fitting fixed to the lower surface of the upper frame rod and a connecting metal fitting with a downward locking portion fixed to the side surface of the lower frame rod are provided respectively, and an elastic body is interposed on the upper surface of the connecting metal fitting with the downward locking portion. A steel skid characterized by being inserted into a space penetrating in the left-right direction formed by the receiving fitting and the lower surface of the upper frame rod, and connecting the upper frame rod and the lower frame rod. By adopting this configuration, it was possible to solve the above problems.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION First, referring to FIGS.
The steel skid according to the embodiment will be described. 1 is an overall perspective view of a steel skid according to the first embodiment, FIG. 2 is a vertical cross-sectional view showing a cross-shaped intersection of the steel skid, and FIG. 3 is a side view of the cross-shaped intersection shown in FIG. is there. 4 is a front view showing a T-shaped crossing portion of the steel skid, FIG. 5 is a partial side view of the T-shaped crossing portion shown in FIG. 4, and FIG. 6 is an explanatory view of an assembling method of the steel skid. Is.

As shown in FIG. 1, the steel skid according to the first embodiment has three square steel pipe upper frame rods 1 which are arranged in parallel in front and rear with a space therebetween, and with a space between left and right. It is provided with three rectangular steel pipe lower frame rods 2 arranged in parallel. The upper frame rod 1 and the lower frame rod 2 are arranged such that their axes are orthogonal to each other when viewed from above, and below the upper frame rod 1 arranged at the front and rear, the front opening end and the rear opening of the lower frame rod 2. It is arranged so that the ends are located.

Here, in FIGS. 1, 2 and 3, 3,
3'is a locking fitting, 4 is a reinforcing fitting, 5 is an L-shaped connecting fitting, 5A
Is an insertion portion of the L-shaped connecting fitting, 6 is a wire fitting fitting, and 7 is a positioning fitting. In this case, the locking metal fittings 3 and 3 ', the reinforcing metal fitting 4, the connecting metal fitting 5, the wire fitting metal fitting 6 and the positioning metal fitting 7 are all angled steel with an L-shaped cross section.

In the steel skid according to the first embodiment, as shown in FIGS. 1, 2 and 3, at the cross-shaped intersection of the upper frame rod 1 in the middle and the lower frame rods 2 on the left and right. Positioning in which the middle upper frame rod 1 is locked between the locking metal fittings 3 and 3'which are respectively fixed in the middle of the left and right lower frame rods 2 and further fixed to the left and right ends of the upper frame rod 1. The metal fitting 7 regulates the lateral position of the upper frame rod 1.

In the cross-shaped crossing portion, the horizontal portions of the L-shaped locking metal fittings 3 and 3'are fixed to the upper middle surface of the left and right lower frame rods 2 by welding, and are formed wider than the width of the upper frame rod 1. The upper frame rod 1 in the gap between the vertical parts of the locking metal fittings 3 and 3 '.
Is inserted so as to drop from above (see FIG. 6). As shown in FIG. 18, the locking metal fittings 3 and 3 ′ are bent such that their intermediate portions approach each other, and the upper frame rod 1 in the middle is press-fitted by being pushed in from above. The intermediate protruding portions of the locking fittings 3 and 3 ′ may be elastically crimped to both side surfaces of the upper frame rod 1.

Further, in the above-mentioned cross-shaped crossing portion, the horizontal portion of the positioning metal fitting 7 is fixed to the lower surfaces of the left and right ends of the intermediate upper frame rod 1 by welding, and the hanging portion of the positioning metal fitting 7 is the lower left and right parts. It is arranged so as to be located close to the inside of the frame rod 2. In addition, in FIG. 2, the hanging part of the positioning metal fitting 7 is shown in contact with the inner side of the lower frame rod 2.
It is preferable to provide an appropriate gap so that the movement of the intermediate upper frame rod 1 in the left-right direction can be restricted and can be easily disassembled and assembled.

In this case, among the cross-shaped crossing portions, the metal fittings 3 and 3'and the positioning metal fitting 7 are not provided at the cross-shaped crossing portion between the intermediate upper frame rod 1 and the intermediate lower frame rod 2. , The locking metal fittings 3 and 3 ′ are fixed in the middle of the lower frame rod 2, and the locking metal fittings 3 and 3 ′ are provided at the cross-shaped intersection between the intermediate upper frame rod 1 and the intermediate lower frame rod 2. You can also do it. In addition, in the T-shaped crossing portion shown in FIG. 1, the upper frame rod 1 and the lower frame rod 2 are connected by an L-shaped connecting fitting 5 fixed to the upper frame rod 1, and these T-shaped crossing portions are further connected. In the section, reinforcing metal fittings 4 are provided on both ends of the lower frame rod 2 and the upper frame rod 1
It is provided so as to be located inside.

The vertical portion of the L-shaped coupling member 5 is fixed to the outer side surface of the upper frame rod 1 by welding and the horizontal portion of the L-shaped coupling member 5 is fixed to the open end of the lower frame rod 2. It is inserted from the outside (see FIGS. 4, 5, and 6). The gap between the horizontal portion of the L-shaped coupling fitting 5 and the lower surface of the upper frame rod 1 is formed to be larger than the thickness dimension of the opening end of the lower frame rod 2 inserted into the gap. Further, the width of the L-shaped connecting fitting 5 is formed narrower than the opening width of the lower frame rod 2. The horizontal portion of the reinforcing metal member 4 is fixed to the upper surface of the end portion of the lower frame rod 2 so that the vertical portion of the reinforcing metal member 4 is located inside the upper frame rod 1. Although not shown in FIG. 1, the L-shaped coupling fitting 5 is brought into contact with the outer side surface of the rear upper frame rod 1 and fixed by welding, so that the upper frame rod 1 and the lower frame rod 2 are separated from each other. Further, the reinforcing metal fitting 4 is fixed to the upper surface of the front end portion of the lower frame rod 2.

Further, in the T-shaped crossing portions at the four corners,
As shown in FIG. 1, a wire fitting 6 is provided.
The wire patch metal 6 is fixed by welding the horizontal parts of the wire patch metal 6 to the lower surfaces of the front and rear upper frame rods 1 so that the hanging parts are located outside the side surfaces of the left and right lower frame rods 2, respectively. (See FIGS. 4 and 5). In FIG. 4, the hanging part of the wire abutting metal 6 is illustrated so as to contact the outside of the side surface of the lower frame rod 2, but between the hanging part of the wire abutting metal 6 and the side face of the lower frame rod 2. It is advisable to form a gap that does not hinder disassembly and assembly even after repeated use.

In such a steel skid,
The front and rear upper frame rods 1 have the same cross-sectional dimension and the same length dimension, and the upper frame rod members are common, and the left and right lower frame rods 2 have the same cross-sectional dimension and the same length dimension. It is desirable to use common members because the cost can be reduced and the workability can be improved. The effects of the steel skid according to the first embodiment described above are as follows.

The steel skid according to the first embodiment is provided with an intermediate lower frame rod, and at least three rectangular steel pipe lower frame rods 2 are arranged side by side at intervals,
The workability can be improved because the rigidity can be made high and the in-plane deformation of the steel skid can be suppressed when the object is transported by being lifted by a wire. Also,
The steel skid according to the first embodiment has a connection structure of the upper frame rod 1 and the lower frame rod 2 at the T-shaped crossing portion,
In place of the structure in which the wedge-shaped insertion portion 100A of the connecting metal fitting 100 is press-fitted, the structure is such that the L-shaped connecting metal fitting 5 is used for smooth insertion, so disassembling and assembling (however, disassembling with the arrow shown in FIG. It is possible to easily perform (reverse direction) manually.

Further, since the steel skid according to the first embodiment has a structure in which the upper frame rod 1 and the lower frame rod 2 are connected by the L-shaped connecting fitting 5, as shown in FIG. 7 (a). In addition, the lower frame rod 2 may be detached downward when the object is transported by a wire or when the object is transported by a forklift fork as shown in FIG. 7B. In addition, since the positioning metal fittings 7 are fixed to both ends of the intermediate upper frame rod 1, the intermediate upper frame rod 1 is pulled out in the left-right direction when the steel skid is transported, and the steel skid is disassembled. Can also be prevented. Positioning metal fittings 7 are provided on both ends of the middle upper frame rod 1.
It is needless to say that since the intermediate upper frame rod 1 can be easily positioned at the time of assembling, the workability is improved because the is fixed. 7 (a) and 7 (b)
S shown in is a rectangular object in which steel plates and the like are laminated.

Further, in the steel skid according to the first embodiment, the wire contact fittings 6 are provided outside the side surfaces of the left and right lower frame rods 2, respectively. Fig.7 (a)
As shown in FIG. 3, the wire-contact fitting 6 receives an external force acting from the wire, so that the deformation of the L-shaped fitting 5 can be suppressed.

By the way, in the steel skid according to the first embodiment, the connecting structure at the T-shaped crossing portion has the insertion portion 5A of the L-shaped connecting fitting 5 inserted from the outside into the opening end portion of the lower frame rod 2. It is preferable to adopt a structure in which the horizontal portion of the reinforcing metal fitting 4 is arranged so that the vertical portion of the reinforcing metal fitting 4 is located inside the upper frame rod 1 at the T-shaped crossing portion. It is fixed to the end of the lower frame rod 2. When the fork of the forklift is inserted into the lower part of the steel skid when transporting an object, the fork shown in FIG. Even when abutting, it is more preferable because the steel skid can be prevented from being disassembled and the deformation of the L-shaped connecting fitting 5 can be suppressed.

Of course, in the above-mentioned steel skid, at least three upper frame rods 1 that come into contact with the object are made of square steel pipes, and the flat rectangular surfaces of the square steel pipes make contact with the bottom surface of the object to be placed. Needless to say, the bottom quality of the object can be ensured, and since all the members used are made of steel, there is no need to separate them at the time of disposal after repeated use, and recycling is easy.

Next, a steel skid according to the second embodiment will be described with reference to FIGS. FIG. 8 is an overall perspective view of a steel skid according to the second embodiment, and FIG. 9 is a T-shaped crossing portion A of the steel skid.
FIG. 10 is a front view of the portion, and FIG. 10 is a partial sectional view taken along line XX of FIG. In addition, Figure 11 is an explanatory diagram of the method of assembling the steel skid,
12 is an explanatory view of an assembling method of the A portion which is the T-shaped crossing portion of FIG.

The steel skid according to the second embodiment differs from the steel skid according to the first embodiment described above in that the connection structure between the upper frame rod 1 and the lower frame rod 2 is
The vertical portion of the L-shaped connecting fitting 11 is fixed to the inner side surface of the upper frame rod 1, and the insertion portion 11A of the L-shaped connecting fitting 11 is attached to the lower frame rod 2.
The structure is such that it is inserted from the inside into the receiving metal fitting 10 attached to the side surface of the end portion of. At that time, the reinforcing metal fittings 4 are not provided because they interfere with each other during assembly. Other than that, since it is the same as the steel skid according to the first embodiment, only the connection structure between the upper frame rod 1 and the lower frame rod 2 at the T-shaped intersection will be described in detail.

In the steel skid according to the second embodiment, as shown in FIG. 8, the vertical portion of the L-shaped connecting fitting 11 is fixed to the inner side surface of the upper frame rod 1 at the T-shaped crossing portion, Moreover, the insertion portions 11A of the L-shaped connecting fittings 11 are inserted from the inside into the receiving fittings 10 attached to the side surfaces of the ends of the lower frame rod 2. This L-shaped connecting fitting 11 is
Has a vertical portion abutting the inner side surface of the upper frame rod 1 and fixed by welding, and a gap is formed between the insertion portion 11A of the L-shaped coupling fitting 11 and the lower surface of the upper frame rod 1. The upper part of the receiving fitting 10 can be smoothly inserted into the gap (see FIGS. 9 and 10). Further, the inner width of the portion of the receiving metal fitting 10 into which the insertion portion 11A is inserted is formed wider than the width of the insertion portion 11A.

The receiving metal fittings 10 are attached to the side surfaces of both ends of the left and right and the middle lower frame rod 2 by welding. However, the receiving metal fittings 10 are provided on the same side surface at both ends of the left and right lower frame rods 2, and the receiving metal fittings 10 are provided on the opposite side surfaces at both end portions of the middle lower frame rod 2. . When assembling the steel skid according to the second embodiment,
As shown in FIGS. 11 and 12, the upper frame rod 1 is inserted into the lower frame rod 2 from the inside.

The steel skid according to the second embodiment has a decomposition resistance against an external force from the inside opposite to the steel skid according to the first embodiment. The steel skid according to the second embodiment is preferable because it can suppress decomposition even when an external force from the inside acts on the upper frame rod 1 by the above-described simple connection structure.

In the steel skid according to the second embodiment, the upper frame rod 1 and the lower frame rod 2 are connected to each other by an L-shaped connecting fitting 11
Connection facilitates disassembly and assembly, increases rigidity by providing an intermediate lower frame rod, improves workability by providing a positioning metal fitting 7, and extends life by providing a wire abutting metal fitting 6. The description is omitted because it is the same as the steel skid according to the first embodiment.

A steel skid according to the third embodiment is shown in FIGS. 14 and 15. As shown in FIG. 14, the steel skid according to the third embodiment is provided with three square steel pipe upper frame rods 1 provided side by side at the front and rear with a space therebetween at the bottom, as shown in FIG. It is provided with the three lower frame rods 2 made of square steel pipes that are installed side by side. These upper frame rod 1 and lower frame rod 2
In all of the intersections, the receiving metal fittings 21 are fixed to the lower surface of the upper frame rod 1, and the receiving metal fittings are attached to the side surfaces of the lower frame rod 2.
A downward fitting locking fitting 22 which can be inserted with an elastic body 23 interposed is fixed in a space formed by 21 and the lower surface of the upper frame rod 1 in the left-right direction (see FIGS. 15 and 16). ).

In this case, the receiving metal fitting 21 is a metal fitting formed in a U-shape, and a space penetrating in the left-right direction is defined by the lower surface of the upper frame rod 1 and the three surfaces of the U-shaped metal fitting part. It is fixed to the lower surface of the upper frame rod 1 by welding so that the U-shaped opening faces upward so that it can be done. On the other hand, the downward fitting locking fitting 22 is formed in a U-shape having an L-shaped leading end with a downward locking portion so that the elastic body 23 can be inserted into the upper surface of the connecting fitting 22 and can be inserted into the space. The U-shaped opening faces downward and is fixed to the side surface of the lower frame rod 2 by welding. Then, as shown in Fig. 15, the downward fitting metal fitting 22
The elastic body 23 is placed on the upper surface of the upper frame rod 1 and is inserted in the space formed by the receiving metal fitting 21 and the lower surface of the upper frame rod 1 in the left-right direction in the direction of the arrow, and as shown in FIG. Lower frame rod 2
And are connected.

FIG. 16 shows that, when the above insertion is completed, the engaging portion of the downward fitting engaging fitting 22 comes out from the space formed by the receiving fitting 21 and the lower surface of the upper frame rod 1, and the downward engaging Schematic diagram of the state in which the stopper is locked at the end of the receiving metal fitting 21, the upper frame rod 1 and the lower frame rod 2 are connected, and the lower frame rod 2 is hung on the upper frame rod 1. Is. In this embodiment, a leaf spring is used as the elastic body 23.

As shown in FIG. 15, the leaf spring is placed on the upper surface of the downwardly-engaged connecting fitting 22 so that a space formed by the receiving fitting 21 and the lower surface of the upper frame rod 1 penetrates in the left-right direction. When inserting in the direction of the arrow, counter the predetermined spring force,
It is formed in a height dimension such that it is compressed in the vertical direction and the height is lowered to allow it to pass through a space. Moreover, the height of the leaf spring is dimensioned so that it is vertically compressed in the state shown in FIG.

Here, a leaf spring interposed at the connecting portion between the upper frame rod 1 and the lower frame rod 2 is vertically compressed when the lower frame rod 2 is suspended on the upper frame rod 1. The size of the lower frame rod 2 allows the flat portion of the downward-fitting connecting metal fitting 22 to be pressed against the upper surface of the metal fitting 21 by a predetermined spring force, and the lower frame rod 2 is moved to the upper frame by vibration or the like during movement. It is preferable because the rod 1 can be more effectively prevented from falling off. However, the elastic body 23 used in the third embodiment is not limited to the leaf spring.

Here, the connection structure of the upper frame rod 1 and the lower frame rod 2 arranged on the left and right is that the steel skid is decomposed by an external force acting from the wire when the object is lifted by the wire when being transported. In order to prevent the above, the downward fitting connecting fittings 22 with locking portions are inserted into the receiving fittings 21 of the upper frame rod 1 from the outside. The height of the elastic body 23 used in the third embodiment is set so that the steel skid can be easily disassembled and assembled, and the steel skid can be prevented from being disassembled when the steel skid is used.

As described above, in the steel skid according to the third embodiment, at least three square steel pipe upper frame rods provided at front and rear intervals are provided, and at least three steel frame upper frame rods provided at left and right intervals are provided. Equipped with three square steel pipe lower frame rods,
At the intersection of the upper frame rod and the lower frame rod, a receiving metal fitting fixed to the lower surface of the upper frame rod and a connecting metal fitting with a downward locking portion fixed to the side surface of the lower frame rod are provided respectively, With the elastic body interposed on the upper surface of the connecting fitting with a stopper,
It is a steel skid that is inserted into a space that penetrates in the left-right direction formed by the receiving metal fitting and the lower surface of the upper frame rod so that the upper frame rod and the lower frame rod are connected to each other.

Since the above steel skid connects the upper frame rod 1 and the lower frame rod 2 by the above-mentioned connection structure,
For example, when the fork of a forklift is inserted into the lower part of the upper frame rod 1 of the steel skid, and when the upper frame rod 1 is lifted by the fork to move the steel skid, the connecting portion is disengaged due to vibration during movement and the lower frame rod. 2 can be prevented from falling off, and the steel skid can be prevented from disassembling. When the steel skid on which the object is placed is placed on the floor, the elastic body 23 is compressed by the upper weight including the upper frame, and there is no hindrance.

Further, since the above-mentioned steel skid connects the upper frame rod 1 and the lower frame rod 2 by the above-mentioned connection structure, they can be easily disassembled and assembled, and they can be lifted by a wire when transporting an object. At this time, the external force acting from the wire can be received by the receiving metal fitting 21 via the lower frame rod 2, so that the connection portion can be prevented from being deformed by the external force and can be repeatedly used for a long time. Regarding the above-mentioned steel skid, the rigidity enhancement due to the provision of the intermediate lower frame rod is the same as that in the steel skid according to the first embodiment, and therefore the description thereof is omitted.

[0043]

Example 1 As a steel skid of Example 1, three square steel pipe upper frame rods having a length of 3048 mm arranged side by side in front and back as shown in FIG. 1, It is provided with three rectangular steel pipe lower frame rods with a length of 1829 mm that are arranged side by side with a space left and right, and the lower frame rod is provided at the cross-shaped intersection between the intermediate upper frame rod and the left and right lower frame rods. Position the upper frame rods on the left and right ends of the upper frame rod so that the upper frame rods are locked between the locking metal fixtures that are respectively fixed in the middle of the The horizontal portion of the metal fitting is fixed, and at the T-shaped intersection of the front and rear upper frame rods and the left and right and middle lower frame rods, the upper frame rod and the lower frame are fixed by the L-shaped connecting metal fittings fixed to the upper frame rod. In addition, the wire contact metal fittings are connected to the lower frame rod at the intersections of the four corners. The assumed that each is provided so as to be positioned on the outside, the steel skid thin steel plate is placed a rectangular packing body formed by laminating and transported. At that time, the steel skid was lifted with a wire or lifted with a forklift fork for repeated use.

The locking metal fitting, the positioning metal fitting, and the wire fitting metal fitting have an L angle of 5.0 mm in thickness and a side length of 40 mm × 40 mm, and the L-shaped connecting metal fitting has a thickness of 6.0 mm and a side length. The angle is 50 mm x 50 mm. Also, the reinforcing metal fittings were L-angles with a thickness of 5.0 mm and side lengths of 40 mm × 40 mm. Both the upper frame rod 1 and the lower frame rod 2 are square steel pipes having a thickness of 2.3 mm and a side length of 50 mm × 50 mm. All the above materials were SS400.

As a result, the steel skid of Example 1 can have a long life and high rigidity without causing a problem in the bottom surface quality of the rectangular packaged object, and disassembles the steel skid during use. In addition to being able to prevent it, the steel skid could be easily disassembled and assembled, and workability could be improved. (Embodiment 2) As shown in FIG. 8, in the T-shaped intersection,
The vertical portion of the L-shaped connecting fitting 11 is fixed to the inner side surface of the upper frame rod 1, and the insertion portion 11A of the L-shaped connecting fitting 11 is attached to the lower frame rod 2.
Using steel skids each having a structure inserted from the inside into the receiving metal fittings 10 attached to the side surfaces of the end portions of the rectangular packing objects in which thin steel plates were laminated were placed on the steel skids and transported.

The L-shaped connecting fitting 11 had an angle of 4.0 mm and a side length of 50 mm × 50 mm. The bracket 10 is formed of a plate having a thickness of 3.2 mm. Also, no reinforcing metal fittings are provided. Other than that, the same as in Example 1. The steel skid of Example 2 had the same results as in Example 1. (Embodiment 3) As a steel skid of Embodiment 3,
A length of 18 attached at the front and back as shown in 14
The upper frame rod 1 and the lower frame rod 2 are equipped with three 00 mm upper frame rods 1 made of square steel pipes and three 900 mm long lower frame rods 2 made of square steel and arranged side by side. At the intersection with
A bracket 21 and a lower frame rod 2 fixed to the lower surface of the upper frame rod 1.
Downwardly-connecting metal fittings 22 with locking portions are provided respectively, and the connecting-metal fittings 22 with downwardly locking parts are provided on the upper surface thereof with an elastic body 23, so that the receiving metal fittings 21 and the upper frame rod 1
The upper frame rod 1 and the lower frame rod 2 are connected to each other by being inserted into the space formed by the lower surface of the and which penetrates in the left-right direction.
A rectangular packaging object in which thin steel plates were laminated was placed on this steel skid and transported.

Both the upper frame rod 1 and the lower frame rod 2 were square steel pipes having a thickness of 2.3 mm and a side length of 50 mm × 50 mm. The bracket 21 has a length of 50 mm in the left-right direction and a length of 50 m in the front-rear direction.
m, height 15 mm, U-shaped member with appropriate thickness, downward fitting locking fitting 22 is 55 mm long in the left-right direction, 40 mm long in the front-rear direction, and 10 mm in height It was a U-shaped member. The material of the above members except the elastic body 23 was SS400. The elastic body 23 is a leaf spring having a predetermined height and an appropriate spring force.

As a result, the steel skid of Example 3 can also have a long life and high rigidity without causing a problem in the bottom quality of the rectangular packaged object, and disassemble the steel skid during use. In addition to being able to prevent it, the steel skid could be easily disassembled and assembled, and workability could be improved.

[0049]

According to the present invention, the bottom quality of an object to be placed and transported is ensured, the recyclability is facilitated, the life is long and the rigidity is high, and the disassembly / assembly is easy. The effect is that it is easy, it is difficult to disassemble during use, and workability is excellent.

[Brief description of drawings]

FIG. 1 is an overall perspective view of a steel skid according to a first embodiment.

FIG. 2 is a vertical cross-sectional view of a cross-shaped intersection portion of the teal skid shown in FIG.

FIG. 3 is a side view of the cross-shaped intersection of the teal skid shown in FIG.

FIG. 4 is a partial front view of a T-shaped intersecting portion of the teal skid shown in FIG.

5 is a partial side view of the T-shaped crossing portion shown in FIG. 4. FIG.

6 is an explanatory view of an assembling method of the teal skid shown in FIG. 1. FIG.

7A and 7B are views showing an example of use of the teal skid shown in FIG. 1, in which FIG. 7A is when the wire is lifted up, and FIG. 7B is when the fork is moved back and forth.

FIG. 8 is an overall perspective view of a steel skid according to a second embodiment.

9 is a front view of an A portion which is a T-shaped crossing portion of FIG. 8. FIG.

10 is a partial sectional view taken along line XX of FIG. 9.

FIG. 11 is an explanatory diagram of a method for assembling the steel skid according to the second embodiment.

12 is an explanatory diagram of an assembling method of an A portion which is the T-shaped crossing portion of FIG. 8.

13A and 13B are views showing an example of use of the steel skid shown in FIG. 8, in which FIG. 13A is when the wire is hoisted by a wire, and FIG. 13B is when the fork is moved back and forth.

FIG. 14 is an overall perspective view of a steel skid according to a third embodiment.

15 is a partial perspective view of the intersection shown in FIG. 14.

16 is a front view of a main part of the intersecting part shown in FIG. 14.

FIG. 17 is a perspective view showing an entire conventional steel skid.

18 is a side view of the cross intersection of the steel skid shown in FIG. 17.

19 is a front view of the T-shaped crossing portion of the steel skid shown in FIG.

[Explanation of symbols]

1 Upper frame rod 2 Lower frame rod 3,3 'locking metal fittings 4 Reinforcing metal fittings 5, 11 L type connection fitting 5A, 11A insertion part 6 wire patch metal fittings 7 Positioning bracket 10 Bracket 21 Bracket 22 Connecting bracket with downward locking part 23 Leaf spring (elastic body) S Rectangular object with thin steel plates laminated 100 Insertion fitting 100A wedge-shaped insertion part

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Kisaburo Miya             254-9 Nakano, Shijonawate City, Osaka Prefecture             Ring Co., Ltd. (72) Inventor Kenjiro Hayakawa             43-1 Uozakihama-cho, Higashinada-ku, Kobe-shi, Hyogo Stock             Company Kawatetsu Konan Steel Center (72) Inventor Mitsuhiro Onishi             43-1 Uozakihama-cho, Higashinada-ku, Kobe-shi, Hyogo Stock             Company Kawatetsu Konan Steel Center F-term (reference) 3E063 AA03 BA02 CA04 CA11 CA25                       EE01 FF09

Claims (5)

[Claims] 1. An upper frame rod made of square steel pipes arranged side by side at front and rear intervals, and at least three lower frame rods made of square steel pipe arranged side by side at left and right intervals. At the cross-shaped intersection of the middle upper frame rod and the left and right lower frame rods, the upper frame rod is locked between the locking metal fittings fixed to the middle of the lower frame rod, respectively. The position of the upper frame rod in the left-right direction is restricted by the positioning metal fittings fixed to the left and right ends of the upper frame rod, and the upper frame rod is provided at the T-shaped intersections of the front and rear upper frame rods with the left and right and the intermediate lower frame rods. The upper frame rod and the lower frame rod are connected to each other by the L-shaped connecting metal fittings fixed to the wire frame, and at the intersections of the four corners, the wire fittings are provided so as to be located outside the side surfaces of the lower frame rod. A steel skid that is characterized by being. 2. The connection structure in the T-shaped crossing portion,
The vertical portion of the L-shaped connecting fitting is fixed to the outer side surface of the upper frame rod, and the insertion portion of the L-shaped connecting fitting is inserted into the open end portion of the lower frame rod from the outside. The steel skid according to claim 1. 3. The T-shaped crossing portion further comprises:
The steel skid according to claim 2, wherein a horizontal portion of the reinforcing metal member is fixed to an end portion of the lower frame rod so that a vertical portion of the reinforcing metal member is located inside the upper frame rod. 4. The connection structure in the T-shaped crossing portion,
The vertical portion of the L-shaped connecting fitting is fixed to the inner side surface of the upper frame rod, and the insertion portion of the L-shaped connecting fitting is inserted from the inside into the receiving fitting attached to the side surface of the end portion of the lower frame rod. The steel skid according to claim 1, wherein the steel skid has a structure. 5. An upper part comprising at least three square steel pipe upper frame rods provided side by side at front and rear intervals and at least three square steel pipe lower frame rods provided at left and right intervals. At the intersection of the frame rod and the lower frame rod, a receiving metal fitting fixed to the lower surface of the upper frame rod and a connecting metal fitting with a downward locking portion fixed to the side surface of the lower frame rod are provided, and the downward locking is performed. The connecting metal fitting with a part is inserted into the space penetrating in the left-right direction formed by the receiving metal fitting and the lower surface of the upper frame rod with the elastic body interposed on the upper surface, and the upper frame rod and the lower frame rod are connected. Steel skid characterized by doing so.