JP3608826B2 - Strut by elastic support and manufacturing method thereof - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a support column by an elastic support used in places where impacts are applied to bridges, roads, and general structures, and a method for manufacturing the same.
[0002]
[Prior art]
For example, a guard rail post on a highway and a post for various signs have a structure in which a lower portion of the post is supported by a cushioning material such as rubber in order to buffer an impact upon contact or collision with an automobile. This structure will be described below with reference to the drawings.
As shown in FIG. 7, a shock absorbing rubber 2 is attached to the lower end of the metal pipe 1, and the periphery of the rubber 2 is covered with a metal cover 3. A flange 4 formed around the lower portion of the metal cover 3 is bolted. It is fixed on the road surface and structures.
[0003]
In the production, the rubber 2 is filled between the metal cover 3 and the metal pipe 1 so as to be molded as a whole.
[0004]
[Problems to be solved by the invention]
According to the strut with elastic support having such a configuration, there is a problem that a metal cover is required on the outer periphery of the rubber and bolting is required when fixing the strut to a road or a structure. Then, when a large displacement occurs, there is a problem that if the pulling force acts on the support column due to the moment and it is severe, it falls down.
[0005]
In addition, there is a limit to the size of the buffer part by rubber, and since the spring characteristics are also low, large deformation occurs when a large external force is applied, and a bearing stress exceeding the pressure received by the rubber is generated, causing cracks in the rubber material. It may occur, and there is a problem that the column is tilted even by a slight impact.
[0006]
[Means for Solving the Problems]
The present invention provides a strut by elastic support provided with a buffer portion of the rubber under end,
The cloth-like laminate material which presses the rubber on both sides of the constraining material are laminated is wound around the lower end portion and the buffer portion, to the buffer unit, characterized in that the installation is buried in the structure such as roads.
[0007]
[Action]
By pressing the rubber on both sides of the cloth-like restraining member and laminate material are laminated is wound around the end portions of the struts forming the buffer portion while applying tension to the laminate, when vulcanized, to form the post buffer It becomes a strut with a buffer part with high spring characteristics by wrapping and vulcanizing cloth with tension on the surface of the part , and it is installed by burying the buffer part to install on roads and structures can.
[0008]
【Example】
Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a partial cross-sectional view showing an elastic support column, FIG. 2 is an explanatory diagram of a laminate material, FIG. 3 is an explanatory diagram showing a method of forming a buffer portion on the column, and in the figure, 5 is a laminate material The rubber 7 is pressed on both surfaces of the restraint 6 made of natural fiber, synthetic fiber, metal, or the like.
[0009]
Such a laminate 5 is wound around a shaft 8 such as a pipe. One end of the laminate material 5 wound around the shaft 8 is locked to one end of the support column 9, and the laminate material 5 is always pulled by changing the rotational speed of the shaft 8 and the support column 9 or applying tension between both shafts. So that it can be wound around the column 9 with The tensile force may be a tensile force that generates a displacement that exceeds the amount of thermal contraction of the restraining material 6.
[0010]
Further, in order to prevent moisture permeation into the cross section of the restraint material 6, the end surface of the laminate material 5 may be covered with rubber, or the rubber may be adhered to the end surface of the laminate after rotational lamination. In this bonding method, an adhesive may be applied to the laminated end face and bonded, or rubber may be bonded before vulcanization, and an adhesive is not necessary when performed before vulcanization.
Note that the width and the number of layers of the laminate material 5 are determined according to the intended use of the product. Also, as shown in FIG. One having a narrower width may be used.
[0011]
The vulcanization operation is carried out by putting it in the mold 10 after lamination. As shown in FIG. 5, the surrounding surface can be replaced with a mold by winding the cloth 11 with tension on the surrounding surface. As a result, it is possible to construct a laminated state that is more reliably integrated.
The buffer portion 12 made of multilayer rubber thus configured has high spring characteristics, and for the required spring characteristics, the choice of the restraint material and rubber material to be used, the thickness of the laminate material, and the number of laminated layers This can be handled by determining Furthermore, it is possible to cope by inserting a rubber having a predetermined thickness at the time of winding.
[0012]
Further, in the case where the support column is a pipe, as shown in FIG. 6, if the inside of the vicinity of the base of the buffer portion 12 is filled with rubber or sand filler 13 as shown in FIG. This can prevent the amount of energy absorbed up to the yield point.
[0013]
【The invention's effect】
According to the present invention described in detail above, rubber is pressed on both sides of the cloth-like restraint material to form a laminate material, and this laminate material can be wound around a support column while applying a predetermined tension and laminated. It has the effect that it can be set as the buffer part with a high spring characteristic.
[0014]
Furthermore, since this buffer part laminates | stacks the laminate material which has a restraint material, it becomes a durable buffer part.
In addition, desired spring characteristics can be obtained by arbitrarily selecting the material of the restraining material of the laminate material, the physical properties of the rubber to be pressure-bonded, the thickness of the laminate material, and the like.
[Brief description of the drawings]
FIG. 1 is a partial cross-sectional view showing a support column by elastic support.
FIG. 2 is an explanatory diagram of a laminate material.
FIG. 3 is an explanatory view showing a method of forming a buffer portion on a support column.
FIG. 4 is an explanatory diagram of laminate materials having different widths.
FIG. 5 is an explanatory view showing a vulcanized state.
FIG. 6 is an explanatory diagram when a filler is mounted in the support column.
FIG. 7 is an explanatory diagram of a conventional example.
[Explanation of symbols]
5 Laminate material 6 Restraint material 7 Rubber 8 Shaft 9 Strut 11 Cloth 12 Buffer part

Claims (2)

In strut by elastic support provided with a buffer portion of the rubber under end,
The cloth-like laminate material which presses the rubber on both sides of the constraining material are laminated is wound around the lower end portion and a buffer portion, the elastic support of the buffer portion, characterized in that the installation is buried in a structure such as a road By prop. Rubber is pressed on both sides of the cloth-like restraint material to form a laminate, and the laminate is wrapped around the end of the support column while tension is applied to form a buffer portion, and the buffer formed on the support column during vulcanization A method of manufacturing a column with elastic support, characterized in that the surface of the part is wound with a tension applied to the cloth and vulcanized .

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