JPH07257577A - Pedestal for steel sheet - Google Patents

Abstract

PURPOSE:To obtain a pedestal for steel sheets, light in weight, having no directional properties in strength and having size stability by using a glass-fiber- reinforced plastic foam board as a base plate and disposing two legs comprising a hollow rectangular bar made of glass-fiber-reinforced plastic at a predetermined interval on the lower face of the base plate to be bonded and fixed thereto. CONSTITUTION:A setting stand 1 has a base plate 2 comprising a glassfiber- reinforced urethane foam board and excellent in mechanical and thermal characteristics, and a pair of legs 3 comprising a hollow rectangular bar formed of a GFRP plate is disposed in parallel with each other at a given interval on the lower face of the base plate 2 and bonded and fixed thereto with an epoxy adhesive. Each leg 3 has recesses 8 for allowing binding ropes or bands to pass therethrough, which are provided on the base plate side face (upper face) of the leg, and forms an angle 4 for roller transport. Further, a composite body having a sandwich structure wherein a foam or a honeycomb body is disposed between plate bodies made of glass-fiber-reinforced plastic is used as the base plate 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pedestal used for transporting and transporting product steel sheets cut into a predetermined size, particularly plated steel sheets, stacked on top of each other.

[0002]

2. Description of the Related Art Conventionally, steel sheets that have been cut to a predetermined size, for example, steel sheets whose surfaces are plated, are stacked in a factory and are transported by a conveyor or by a vehicle for transportation by a vehicle. The pedestal is used for. However, in the case of this wooden pedestal, corrosion of the material is unavoidable and durability is poor, and since nails are used to fix the base plate and legs, transportation and transportation on the way by conveyor etc. Due to repeated impacts such as vibrations, the nail may come off or float up, resulting in troubles such as damage to the steel sheet surface of the product. In addition, wood also has a problem in surface smoothness and is often damaged by grain, knots, tars, wood chips, and the like. In addition, wood has a directional strength, which causes bending and distortion, resulting in misalignment of binding and misalignment of ropes during transportation.In particular, it is necessary to protect the bottom corners with angles to prevent damage. However, there is also a drawback that the number of manufacturing steps increases.

[0003]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems of the wooden base plate, the present invention is durable, lightweight, has no directionality in strength, and has dimensional stability and usability. The purpose is to provide a pedestal for a good steel plate. Another object of the present invention is to provide a pedestal whose surface is smooth, has no nailing process, and does not damage the product steel sheet.

[0004]

DISCLOSURE OF THE INVENTION The present invention for solving the above problems is a glass fiber reinforced plastic foam plate (foam FR, which is lightweight, has excellent surface smoothness, and has no directionality in strength.
Focusing on (P plate), the sandwich is made by sandwiching the base plate between the foamed FRP plate single plate or the glass fiber reinforced plastic plate (GFRP plate) with the honeycomb structure made of plastic foam, paper, aluminum foil, etc. G which is composed of a composite structure and is formed in a hollow shape as a leg portion which supports the base plate.
This is a structure in which a FRP square bar is arranged on the bottom of the base plate and adhered and fixed.

Further, in the pedestal of the present invention described above, a notch portion for passing a binding band is formed on the side of the hollow GFRP square bar constituting both legs thereof which is fixedly adhered to the base plate, and the lower side thereof. It has a structure in which chamfered portions (angles) are formed at both ends of both end portions.

Foamed FRP used for the base plate of the pedestal of the present invention
The various dimensions of the GFRP hollow square bar that constitutes the plate and leg are
The size is appropriately set in consideration of satisfying the dimensions of the steel plates to be loaded and the strength that can be loaded, and the like. Generally, the base plate has a long side of 90 cm to 100 cm and a short side of 60 cm to
The thickness is 80 cm and the thickness is in the range of 20 mm to 30 mm, and the hollow square members forming the legs have a thickness of 3 mm to 5 mm.
Other dimensions are appropriately set according to the dimensions of the base plate.

[0007]

In the pedestal of the present invention having the above-described structure, the base plate has excellent mechanical characteristics peculiar to FRP, is lightweight, and has no directional strength. It will not be distorted and will not be deformed when the loaded steel materials are bound with ropes or bands. In addition, it is easy to bind and fix the product to the pedestal of the product with the rope or band through the hollow timber and the notch provided in the timber, and even if impact is continuously applied by roller transportation etc., the band and rope will be displaced. Absent. Furthermore, it has excellent surface smoothness so that it does not damage the steel surface. In addition, since it has corrosion resistance and does not deteriorate with time, it has an advantage of being highly durable.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the pedestal for steel sheet according to the present invention will be described in detail below with reference to the accompanying drawings, but the present invention is not limited to the embodiment. 1 is a perspective view of a pedestal of the present invention, FIG. 2 is a sectional view of the pedestal shown in FIG. 1 taken along line XX, and FIG. 3 is a sectional view of the pedestal shown in FIG. 1 taken along line YY. . Further, FIG. 4 is a perspective view of a pedestal of the present invention in which a composite having a structure in which a plastic foam is sandwiched between GFRP plates is used as a base plate,
FIG. 5 is a perspective view of a pedestal of the present invention having a structure in which a honeycomb core is sandwiched between GFRP plates as a base plate. In each drawing, reference numeral 1 is a pedestal, 2 is a base plate, 3 is a leg portion, 4 is an angle formed at the tip of the leg portion, 5 is a foam, 6 is a honeycomb core, 7 is a surface FRP member, and 8 is The notch, 9 is an adhesive part, and 10 is a hollow part.

In FIG. 1, the pedestal 1 has a long side of 910 m.
A base plate having excellent mechanical and thermal characteristics, which is made of a glass fiber reinforced urethane foam plate having m, a short side of 710 mm and a thickness of mm, is used. The leg portion 2 is made of a hollow square bar made of a GFRP plate having an outer diameter of 70 mm and a thickness of 4.5 mm, and the base plate side (upper surface) thereof is provided with a notch portion 8 for passing a rope or band for binding. Further, an angle 4 for transporting the rollers is formed, and the base plate 1 is adhesively fixed to the lower surface of the base plate 1 in parallel with an epoxy adhesive at an interval of 55 cm.

Under the same conditions, both the pedestal having the structure shown in FIG. 1 and the conventional wooden pedestal are loaded with plated steel products.
As a result of conducting a usage test in the cycle of customer loading to product loading, the conventional wooden pedestal has a decrease in material strength after being used 2-3 times.
Corrosion, nail dropout, and other damage were observed, and the pedestal had a short life. On the other hand, the pedestal of the present invention having the above-mentioned structure does not change in appearance and performance even after 50 cycles. It was not seen, and it was clear that the usage cycle could be repeated. In addition, as shown in Table 1, the results of observing the damage ratio of the product after one use cycle and the cause thereof for 100 samples of each of the conventional wooden pedestal and the pedestal of the present invention are shown in Table 1. However, product damage due to various causes was found on the wooden pedestal.

[0011]

[Table 1]

Similarly to the above, for each of the 500 samples, the results of observing the deviation of the ropes and the products that bind the products after loading and transporting the products are shown in Table 2.

[0013]

[Table 2]

Similar results to the pedestal of FIG. 1 are shown in FIGS.
It could also be obtained by the pedestal using the FRP base plate having the sandwich structure shown in FIG.

[0015]

As is clear from the above results, the FRP pedestal of the present invention has excellent durability and flatness, does not damage product-plated steel sheets, and has excellent mechanical strength. Therefore, the angle of the lower end of the leg, which is indispensable in the conventional wooden pedestal, is not always necessary to reduce the impact during the transportation of the rollers, and thus there is an advantage that the manufacturing process can be simplified.

[Brief description of drawings]

FIG. 1 is a perspective view of a pedestal of the present invention.

FIG. 2 is a sectional view taken along line XX of the pedestal shown in FIG.

3 is a cross-sectional view of the pedestal of FIG. 1 taken along the line YY.

FIG. 4 is a perspective view of a pedestal of the present invention in which a composite having a structure in which a plastic foam is sandwiched between GFRP plates is used as a base plate.

FIG. 5 is a perspective view of a pedestal of the present invention having a structure in which a honeycomb core is sandwiched by GFRP plates.

[Explanation of symbols]

1: pedestal, 2: base plate, 3: leg part, 4: angle, 5: foam, 6: honeycomb core, 7: surface FRP member, 8: cutout part, 9: adhesive part, 10: hollow part.

Claims (3)

[Claims] 1. A glass fiber reinforced plastic foam plate is used as a base plate, and two leg portions made of hollow glass fiber reinforced plastic square members are arranged in parallel at a constant interval on the lower surface of the base plate and fixed by adhesion. A pedestal for steel plates, which is characterized in that 2. The both legs are formed with a notch for passing a binding band at a base plate side portion thereof, and chamfered portions at both lower end portions thereof. The pedestal for steel plate according to Item 1. 3. The base plate is made of a composite material having a sandwich structure in which a foam body or a honeycomb body is arranged between glass fiber reinforced plastic plate bodies.
Alternatively, the pedestal for steel plate according to 2.