JPH0632429U - Cylindrical body fixing device - Google Patents

Abstract

(57) [Summary] (Modified) [Structure] A plastic buffer layer for preventing scratches with a tensile strength of 0.5 kg / mm ² or more and a thickness of 1 mm or more on at least the upper surface of the structure-retaining portion having strength. 2. A cylindrical body fixing device configured by 2. [Effect] Compared to conventional wood, it is more resistant to impacts, is homogeneous and has sufficient strength, prevents scratches on the surface of the cylinder, and does not damage the paper packaging on the surface. It has a light color, does not easily get dirty, and its position can be easily confirmed even in a dark warehouse. Both strength and appearance endure long-term use.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 TECHNICAL FIELD The present invention relates to a device for preventing rolling and fixing a heavy cylindrical member such as a steel plate coil or a large diameter steel pipe.

[0002]

[Prior art]

 Conventionally, in order to prevent rolling and fixing of a cylindrical body with a large load such as a steel plate coil and a large diameter steel pipe, in order to prevent scratches on the surface of the cylindrical body, a moderately soft property and a cylindrical body Wood was cut into a square shape and used to secure and support wood. However, the quality of the material is not constant because it is wood, and even new wood will break first, making it difficult to determine when to replace it, and it was necessary to perform troublesome inspections at regular intervals.

Since conventional wood is weak against impact, particularly in the case of a coil having a large load such as a steel plate coil, the weight is 1 to 30 tons, and therefore the wood is often broken, and it is necessary to replace it every time. Also, if the wood breaks during use, the cylinders such as the piled coils may collapse and it is dangerous.Since the quality of the wood is not constant, replacement is done by visual inspection and the replacement time is decided. It was

Further, since the weight of the timber is heavy only by cutting the timber into a rectangular shape, the work of replacing the timber with the iron frame with nails is troublesome. Since the conventional timber is a tree, it sometimes breaks the cylindrical paper such as the steel plate coil which is paper-packed by the grain. Moreover, since the conventional product is made of wood, it absorbs oil adhering to the cylinder such as steel plate coil and discolors to black, which not only spoils the aesthetic appearance but also works in a dark warehouse when fixing the cylinder. It was difficult to confirm the position of the fixing device because the black one was not clearly visible. The strength of the conventional wood deteriorated due to water absorption (moisture absorption), and the reliability of the strength was low.

[0005]

[Problems to be solved by the device]

 The purpose of the present invention is to withstand impact, to have a uniform and sufficient strength, to prevent scratches on the surface of the cylindrical body, to prevent stains on the paper packaging, to prevent stains with light colors, and to easily confirm the position even in a dark warehouse. Another object is to provide a simple cylindrical body fixing device.

[0006]

[Means for Solving the Problems]

 The inventors of the present invention have made extensive efforts to solve the above-mentioned problems, and as a result, have made a structure holding part made of hollow metal made of steel plate, etc., which has strength for fixing, and plastic for scratch prevention and shock absorption. The inventors have found that the problem can be solved by combining it with a buffer layer portion for, and completed the present invention.

That is, the present invention is a device for preventing rolling of a cylindrical body such as a steel plate coil, which has a tensile strength of 0.5 kg / mm ² or more and a thickness of 0.5 kg / mm ² or more for preventing damage to the cylindrical body. It is a cylindrical body fixing device having a double structure of a plastic buffer layer portion of 1 mm or more and a structure holding portion having strength.

Hereinafter, the present invention will be described in detail with reference to the drawings. FIG. 2 is a side view showing a state in which the coils are stacked, and 3 is the fixing device of the present invention. It can be used in the same way as conventional wood. In order to reduce the weight, the structure holding portion of the present invention preferably has a cross section in which the top surface is inclined along the circumferential side surface of the steel plate coil when the bottom side is made horizontal by bending the steel plate or the like and welding. It has a shape like a trapezoid with its left and right sides almost parallel, and it is the length of a conventional lumber lumber.

A plastic plate is adhered to the surface of the metal structure holding portion that contacts the coil by adhesion to prevent damage to the coil and shock absorption, or a portion of the plastic plate is bent to form the structure holding portion. The plastic plate is adhered to the inclined surface of the upper surface by hooking it to reinforce the adhesive strength, or by forming the plastic plate into a box shape and covering the structure holding part with a cap shape. .

The tensile strength of the plastic plate should be 0.5 kg / mm ² or more, and the thickness should be 1 mm or more. If the tensile strength of the plastic plate is less than 0.5 kg / mm ² , the failure rate of the plastic sheet due to the load of the steel plate coil or the like increases. FIG. 4 is a plot of the experimental results in which the horizontal axis represents the tensile strength (kg / mm ² ) of the plastic sheet and the vertical axis represents the sheet failure rate. If the tensile strength is 0.5 kg / mm ² or more, the sheet breakage rate can be made almost 0%. If it is less than 0.5 kg / mm ² , the sheet breakage rate will rapidly increase.

FIG. 3 is a plot of experimental results in which the horizontal axis represents the sheet thickness and the vertical axis represents the occurrence rate of coil scratches. It can be seen that if the sheet thickness is 1.0 mm or more, the coil scratch occurrence rate can be made almost 0%, but if the sheet thickness is less than 1.0 mm, the coil scratch occurrence rate becomes high. Especially when there is no plastic sheet (thickness 0 mm), the occurrence rate of scratches is 20% or more. Material A in FIG. 3 is a plastic sheet having a tensile strength of 0.5 kg / mm ² , and material B is a plastic sheet having a tensile strength of 20 kg / mm ² .

[0012]

[Action]

 Scratch on a cylindrical body such as a coil by a fixing device for a cylindrical body characterized by a structure for fixing with metal such as a steel plate and a buffer layer for preventing damage and absorbing impact with plastic Can be fixed without. The structure holding part made of metal such as steel plate can be used for a long period of time, it does not break like the conventional wooden and the cylinder does not roll, and it is superior to wooden in terms of safety.

If the structure holding part such as steel plate is manufactured with the strength exceeding the fatigue limit, it can be used semi-permanently when it is used in a room such as a warehouse. Therefore, it is only necessary to replace the plastic sheet of the lightweight cushioning layer. Maintenance is sufficient and replacement work is easy. FIG. 5 is a diagram showing an example of a method of attaching the plastic sheet of the buffer layer.

Further, since the plastic sheet of the buffer layer is homogeneous and does not easily deteriorate, it generally withstands long-term use more than non-uniform wood. In addition to that, the breakage of paper packaging due to being caught by the grain of wood, such as wood, does not occur with homogeneous plastic sheets. Plastics can be colored freely by mixing colorants when molding, making it easy to see bright colors even in a dark warehouse.

When a material such as polypropylene (PP) having good chemical resistance is used as the plastic, even if it gets dirty with oil, it will not penetrate into the plastic and can be easily wiped with a cloth etc. Since it falls, it is difficult to identify the fixing device because it becomes dirty with oil or the like like wood and work efficiency is not reduced. In addition, plastic is less prone to deterioration than wood that absorbs moisture and so on, and its strength and appearance endure long-term use.

Also in recycling, in the case of using only one kind of plastic as in the present invention, it can be easily regenerated and is superior to wood that can only be burned to be a fuel. Furthermore, recently, from the standpoint of protecting the natural environment, the use of wood has become a problem, and the use of wood may become difficult in the future, and it is also excellent from the perspective of ecology.

[0017]

【Example】

 Hereinafter, the present invention will be specifically described by way of examples, but the present invention is not limited to these examples.

Example 1 FIG. 1A shows a structure holding part 1 made of a steel plate of the present invention in which a trapezoid is laid sideways, and a plastic 2 is adhered or covered on the inclined part of the upper surface. The left side is a perspective view and the right side is a sectional side view.

Embodiment 2 FIG. 1 (b) shows that the same structure holding portion 1'is formed by adhering a plastic 2'which is bent in a V shape to the inclined portion of the upper surface and the downward portion beyond the top portion. The left side is a perspective view and the right side is a sectional side view.

Embodiment 3 FIG. 1 (c) shows a case in which a plastic 2 ″ is formed in a box shape in the same shape as the structure holding portion 1 ″ to cover the upper surface and the upper side surface and is covered with a cap. It can be applied to plastics that are difficult to bond. The left side is a perspective view and the right side is a sectional side view.

The effects of Examples 1 to 3 are the same as long as the plastic sheet is on the upper surface, and the effects are as shown in FIGS. 3 and 4. Note that FIG. 5 is an enlarged perspective view showing a place where the cap 2 ″ of the third embodiment is covered with the structure holding portion 1 ″.

[0022]

[Effect of device]

 The fixing device of the present invention is shock-resistant, homogeneous and has sufficient strength, prevents damage to the surface of the cylindrical body, and does not damage the paper packaging on the surface. In addition, it can be made light-colored, does not easily get dirty, and its position can be easily confirmed even in a dark warehouse. Both strength and appearance endure long-term use, and because it does not consume wood, it is ecologically superior.

[Brief description of drawings]

1A, 1B, and 1C are a perspective view and a sectional side view of an embodiment of the present invention.

FIG. 2 is a cross-sectional side view in which cylindrical bodies are stacked using the fixing device of the present invention.

FIG. 3 is a relationship diagram between a sheet thickness of a buffer layer and a coil scratch occurrence rate.

FIG. 4 is a diagram showing the relationship between the tensile strength of the buffer layer and the sheet breakage rate.

5 is an example of a method of attaching a sheet of a buffer layer {FIG. 1 (c)} to a structure holding portion.

[Explanation of symbols]

 1, 1 ', 1 "structure holding part 2, 2', 2" buffer layer 3 cylindrical body fixing device of the present invention 4 cylindrical body such as steel plate coil 5 floor surface

Continuation of the front page (72) Creator Satoru Mita 12-16 Tomizawa-cho Nihonbashi, Chuo-ku, Tokyo Inside Japan Contec Co., Ltd.

Claims (1)

[Scope of utility model registration request] 1. A device for preventing rolling of a cylindrical body such as a steel plate coil having a tensile strength of 0.5 kg / mm ² or more and a thickness of 1 mm or more for preventing damage to the cylindrical body. A cylindrical body fixing device having a double structure of a plastic buffer layer portion and a structure holding portion having strength.