JP2021046765A - Support cover for cable type guard fence and manufacturing method for the same - Google Patents

Abstract

To provide a support cover for cable type guard fence that is easy to attach to a support, is highly safe, and has a reflective material.SOLUTION: Disclosed is a support cover 1 to be assembled to a post P of a cable type guard fence. The support cover 1 of the cable type guard fence includes a cover body 11 and a reflective material layer 13 laminated and integrated on the outer periphery of the cover body 11. The cover body 11 has a curved or bent shape so as to have a cylindrical shape when assembled to the post P. Additionally, the cover body 11 is mainly composed of a pressed non-woven fabric.SELECTED DRAWING: Figure 1

Description

The present invention relates to a support column cover for a cable-type guard fence and a method for manufacturing a support column cover for a cable-type guard fence.

Protective fences will be provided to prevent vehicles from deviating from the road lane. As a kind of protective fence, a cable type protective fence (also called a wire rope type protective fence) in which a plurality of cables are passed between columns is known. For example, Patent Document 1 discloses a cable-type guard fence and a support column used for the cable-type guard fence.

In the technique disclosed in Patent Document 1, by providing a fall direction guiding member at the base of the support, which makes it easy for the support to fall in a specific direction, the asphalt pavement is not destroyed in the event of a vehicle collision, and the amount of protrusion of the vehicle is increased. It is possible to prevent the bent pillars from protruding toward the roadway side while reducing the number of parts.

JP-A-2019-44512

From the viewpoint of suppressing the deviation of the vehicle from the road and the contact of the vehicle with the guard fence, it is desirable to improve the visibility of the cable type guard fence, especially at night. Therefore, a technique for attaching a reflective material to a cable-type protective fence is being studied.

An object of the present invention is to provide a support column cover for a cable-type protective fence that is easy to attach to a support column, has high safety, and is provided with a reflective material.

As a result of diligent studies, the inventor has constructed a cover body mainly composed of a non-woven fabric pressed into a predetermined shape, and integrated a reflective material layer on the outer periphery of the cover body to obtain a support column cover that can solve the above problems. Knowing that, the present invention was completed.

The present invention is a support column cover to be assembled to a support column of a cable-type protective fence, which includes a cover body and a reflective material layer laminated and integrated on the outer periphery of the cover body, and the cover body is assembled to the support column. It is a support column cover of a cable-type protective fence, which is mainly composed of a non-woven fabric press-processed into a curved or bent shape so as to form a tubular shape (first invention).

In the first invention, preferably, the reflector layer is composed of a sheet-like reflector in which the reflector is arranged between the base material layer and the surface protective layer, and the reflector layer is integrated with the cover body by adhesion or welding. (2nd invention). Further, in the first invention, preferably, the cover main body is formed in a tubular shape, and slits are provided along the axial direction of the cylinder (third invention). Further, in the first invention, the cover body is preferably formed in a half-split shape (fourth invention).

Further, the present invention is a method for manufacturing a support column cover for a cable-type protective fence according to any one of the first invention to the fourth invention, in which a non-woven fabric material containing heat-melted fibers is sandwiched between molds to generate heat. It is a method of manufacturing a support column cover of a cable-type protective fence, which includes a hot pressing step of giving a predetermined shape to a cover body by pressing (fifth invention).

According to the support column cover (first invention) of the cable-type protective fence of the present invention, the support column cover is given a tubular shape when assembled to the support column, so that it can be easily attached to the support column. Further, according to this support column cover, a reflector layer can be attached so as to surround the support column, and light from various directions can be efficiently reflected, so that visibility at night is particularly enhanced. Further, since the cover body of the support column cover is made of a press-processed non-woven fabric, the support column cover is very lightweight. If the cover is lightweight, even if the cover is scattered and comes into contact with other articles, such as when the cover comes off from the support when the vehicle comes into contact, secondary damage due to the cover is less likely to occur, and safety is improved. Can be enhanced.

Further, as in the second invention, when the reflector layer is composed of a sheet-like reflector having a predetermined configuration and the reflector layer is integrated with the cover body by adhesion or welding, the rigidity of the support column cover is increased. Is increased as a whole and it is easy to reduce the weight, which is advantageous for maintaining the shape of the support column cover and improving safety.

Further, as in the third invention and the fourth invention, the support column cover provided with the reflective material can be attached to the existing cable type guard fence already laid on the road.

Further, as in the fifth invention, if the non-woven fabric material containing the hot-melt fiber is hot-pressed to give a predetermined shape to the cover main body, the production of the support column cover becomes efficient.

It is a front view and the top view which show the structure of the support column cover of the cable type guard fence of 1st Embodiment. It is the schematic of the process of attaching the support column cover of the cable type guard fence of 1st Embodiment to a support column. It is a front view and the top view which show the structure of the support column cover of the cable type guard fence of 2nd Embodiment. It is a schematic diagram which shows the process example of manufacturing the support column cover of the cable type guard fence of 2nd Embodiment. It is a front view and the top view which show the structure of the support column cover of the cable type guard fence of 3rd Embodiment.

Hereinafter, embodiments of the present invention relating to the support column cover of the cable type guard fence will be described with reference to the drawings. The invention is not limited to the individual embodiments shown below, and the embodiments can be modified and implemented.

FIG. 1 is a front view and a top view showing the structure of the support column cover 1 of the cable type guard fence of the first embodiment. The support column cover 1 includes a cover body 11 and a reflector layer 13. The reflective material layer 13 is laminated and integrated on the outer periphery of the cover main body 11. The means for integrating the reflector layer 13 can be bonded, welded, sewn, locked by a locking member, or the like, and is not particularly limited. The reflective material layer 13 may be formed directly on the outer periphery of the cover main body 11 by applying a reflective paint to the cover main body or the like.

The cover main body 11 is formed in a curved or bent shape so as to have a hollow tubular shape when assembled to a support of a cable-type protective fence. For example, although not essential, the cover body has a cylindrical shape such as a cylindrical shape or a square tubular shape, a gutter-shaped curved shape having a semicircular cross section, or a gutter shape having a substantially L-shaped cross section. Can be bent.
In the present embodiment, the cover main body 11 is formed in a hollow cylindrical shape, and is further provided with slits along the axial direction of the cylinder. The shape of the cover main body 11 may be a form in which the cylinder is divided into a plurality of members along the axial direction, as in the form of the half-split shape described later.

The cover body 11 is mainly composed of a pressed non-woven fabric. By pressing the non-woven fabric, the above-mentioned predetermined shape is given to the cover main body 11. Further, by being pressed, the cover body 11 can be attached or detached by utilizing the elasticity of the non-woven fabric, and the shape of the support column cover 1 attached to the support column can be maintained well by withstanding wind and rain. The cover body 11 is provided with as much rigidity as possible.

The thickness of the non-woven fabric constituting the cover body 11 is preferably 0.5 to 3 mm, more preferably 1 to 2 mm. From the viewpoint of weight reduction and manufacturing efficiency, it is preferable to make the cover body as thin as possible within the range where the desired rigidity can be obtained.

The press working applied to the cover body 11 is preferably a hot press working. Further, in the press working, a binder may be used in combination to improve the shape retention and rigidity of the pressed non-woven fabric.

Although not essential, the non-woven fabric constituting the cover body 11 preferably contains hot-melt fibers. Here, the hot-melt fiber is a synthetic resin fiber that melts at the processing temperature when the non-woven fabric is hot-pressed. The non-woven fabric contains heat-melted fibers, and the other fibers contained in the non-woven fabric are configured so as not to melt at the processing temperature of the hot press, so that the non-woven fabric is heat-pressed to be predetermined while maintaining the non-woven fabric. It is possible to efficiently increase the rigidity of the support column cover 1 by giving the form of the above.

As an example of the non-woven fabric containing the heat-melted fiber, a non-woven fabric having a fiber composition in which PET fiber having a relatively high melting point is used as a base fiber and polyethylene fiber having a relatively low melting point is mixed as a heat-melted fiber can be exemplified. Further, as another example of the non-woven fabric containing the heat-melted fiber, a core having a relatively high melting point PET fiber as a base fiber, a relatively high melting point PET resin as a core, and a relatively low melting point polyethylene resin as a sheath. An example is a non-woven fabric having a fiber composition in which a base fiber and a heat-melted fiber are mixed, using the sheath fiber as a heat-melted fiber. The fibers constituting the non-woven fabric may be synthetic fibers or may contain natural fibers. Further, the type of the raw material of the fiber material constituting the non-woven fabric, for example, the synthetic resin is not particularly limited.

Although not essential, the cover body 11 may be formed with a mounting portion such as the flange portion 12. The support column cover 1 can be securely attached to the support column of the cable-type protective fence by using a mounting portion such as the flange portion 12. In the present embodiment, a pair of flange portions 12 are provided in the open slit portions of the cylindrical cover body 11. By arranging the support column cover 1 so as to be wound around the outer circumference of the support column and then integrating the flange portions 12 facing each other, the support column cover 1 can be securely attached without falling off from the support column. The means for fixing the flange portions 12 to each other is not particularly limited, but means such as adhesion, welding, fastening with screws, locking with a clip member, and suturing with a string or thread can be used.

Although not essential, the reflector layer 13 is preferably composed of a sheet-like reflector in which the reflector is arranged between the base material layer and the surface protective layer. Further, it is particularly preferable that the reflector layer 13 has retroreflective property. As such a sheet-shaped reflective material, a commercially available reflective tape or a reflective sheet may be used.

Although not essential, the reflector layer 13 composed of a sheet-like reflector in which the reflector is arranged between the base material layer and the transparent surface protective layer is integrated with the cover body 11 by adhesion or welding. It is preferable to have. When the sheet-shaped reflector layer is integrated by adhering or welding the non-woven fabric to the outer periphery of the press-molded cover body, the support column cover 1 can be made lighter and more rigid.

The support column cover 1 is used by being attached so as to cover the outer periphery of the support column of the cable type guard fence in a tubular shape. FIG. 2 shows a part of the process of attaching the support column cover 1 to the support column of the cable type guard fence. In the cable-type guard fence, a plurality of cables C1, C2, and C3 (three in the example of FIG. 2) are stretched between the poles P at predetermined intervals in the vertical direction. FIG. 2 shows the circumference of one pole P.

The strut cover 1 is attached to, for example, a strut in a portion between the cable C1 on the lowermost side and the road surface in a tubular shape so as to cover the periphery of the strut. In the case of the support column cover 1 of the above embodiment, the support column P is inside the support column cover 1 by using the elasticity of the support column cover formed in a tubular shape to push out the slit portion in which the cylinder is cut open. Install the strut cover so that it is placed in. When the support column cover 1 is arranged at a predetermined position, the support column covers 1 are prevented from coming off from the support column P by, for example, adhering the flange portions 12 and 12, which are mounting portions, to each other.

When the support column cover 1 is attached to the support column P, the visibility of the support column P, particularly the visibility at night, is enhanced by the reflective material layer 13 provided on the outer peripheral surface of the support column cover 1.
The column cover 1 is adjusted in length so as to be arranged between the cables (for example, between the second cable C2 from the bottom and the third cable C3 from the bottom). It may be attached.

According to the support column cover 1, since the support column cover 1 is given a tubular shape in advance when assembled to the support column P, it can be easily attached to the support column P. Further, according to the main support column cover 1, the reflector layer 13 can be attached so as to surround the support column P, and light from various directions can be efficiently reflected, so that visibility at night is particularly improved.

Further, since the cover body 11 of the support column cover 1 is made of a press-processed non-woven fabric, the support column cover can be easily attached by utilizing the elasticity of the support column cover 1. Further, since the cover main body 11 of the support column cover is made of a press-processed non-woven fabric, the support column cover 1 is very lightweight. If the cover is lightweight, even if the cover comes off the support when the vehicle comes into contact with the guard fence, secondary damage will occur due to the cover when the cover scatters and comes into contact with other articles. It becomes difficult and safety is improved.

Further, when the cover main body 11 is formed in a tubular shape and a slit is provided along the axial direction of the cylinder as in the support column cover 1 of the present embodiment, the elasticity of the slit and the support column cover 1 is increased. By utilizing this, the support column cover 1 can be attached to the support column P from the side surface of the support column P by expanding the slit portion. Therefore, even for the existing cable-type guard fence already laid on the road, the support column cover 1 provided with the reflective material can be attached to the support column P, and the convenience of attaching the support column cover is enhanced.

In FIG. 2, the method of attaching the support column cover 1 to the existing cable-type guard fence already laid on the road has been described, but the support column cover is attached to the support column before being laid on the road, and the support column cover is attached. Cable-type guard fences may be laid using the attached columns. In this case, even if the support column cover is formed in a tubular shape without slits, it can be attached to the support column without delay.

FIG. 3 shows the support column cover 2 of the second embodiment. The support column cover 2 of the present embodiment is mainly different in shape from the support column cover 1 of the first embodiment, and has the same configuration in other respects.
The cover body 21 of the support column cover 2 of the second embodiment is formed in a gutter-shaped curved shape having a semicircular arc shape in cross section. That is, the cover main body 21 has a half-split shape in which the cylinder is divided into half-split shapes. Flange portions 22, 22 are provided on both sides of the cover main body 21. The flange portions 22 and 22 are each provided with three through holes for fastening.

Two reflective material layers 23, 23 are adhesively integrated on the outer periphery of the cover body 21. The reflective material layer may be provided so as to cover the entire outer circumference of the cover main body, or may cover a part of the cover main body. Further, the reflector layer may be integrated with the outer periphery of the cover body in a specific plane pattern.

When attaching the support column cover 2 of the second embodiment to the support column P, the support columns P are sandwiched between the two support column covers 2 so that the through holes of the flange portions 22 and 22 facing each other are matched, and the bolt is passed through the through holes. It is fastened with nuts and attached so that the support column covers 2 and 2 are arranged in a tubular shape around the support column P.

Also in the support column cover 2 of the second embodiment, since the support column cover 2 is given a tubular shape in advance when assembled around the support column P, it can be easily attached to the support column P.

Further, when the cover main body 21 is formed in a half-split shape as in the support column cover 2 of the second embodiment, the support column P is sandwiched between the two support column covers 2 and 2 from the side surface of the support column P. The column covers 2 and 2 can be attached to the column P. Therefore, even for the existing cable-type guard fence already laid on the road, the support column cover 2 provided with the reflective material can be attached to the support column P, and the convenience of attaching the support column cover is enhanced.

An example of a method for manufacturing a support column cover using a hot press will be described by taking the support column cover 2 of the second embodiment as an example. The manufacturing process is schematically shown in FIG.

Heat press dies D1 and D2 having a die forming surface matching the shape of the outer peripheral surface of the cover main body 21 are prepared. The mold is opened and the non-woven fabric material NW to be the cover main body 21 is arranged between the molds D1 and D2 (FIG. 4A). Prior to the heat pressing step, it is preferable to preheat the non-woven fabric material NW.

Molds D1 and D2 are closed and hot press processing is performed. The non-woven fabric material NW is formed into the shape of the cover body 21 while being compressed in the thickness direction by the heat press (FIG. 4 (b)). At this time, the flange portion 22 is also formed at the same time. A non-woven fabric material containing heat-melted fibers is used as the non-woven fabric material NW, and the non-woven fabric material NW is sandwiched between heated dies and hot-pressed to give a predetermined shape to the cover body. Is preferable. In this way, it is possible to efficiently manufacture a support column cover having a predetermined shape and having a relatively high rigidity. When burrs and the like are generated due to the hot press, these burrs and the like are appropriately removed after the pressing process.

A sheet-shaped reflector layer 23 is integrated on the outer periphery of the molded cover body 21 (FIG. 4 (c)). The integration may use an adhesive, an adhesive, a hot melt, or the like, but may also be welding using a resin of a heat-melted fiber contained in a non-woven fabric material.
When the reflector layer 23 is integrated with the cover main body 21, the support column cover 2 is completed (FIG. 4 (d)).

When the support column cover 1 of the first embodiment is manufactured by hot pressing, two-step hot pressing is performed, that is, a step of hot-pressing the cylindrical portion of the cover body 11 and a step of hot-pressing the flange 12. It may be.

The invention is not limited to the above embodiment, and can be implemented with various modifications. Further, other embodiments of the invention will be described below, but in the following description, the parts different from the above-described embodiment will be mainly described, and the detailed description of the same parts will be omitted. Moreover, these embodiments can be carried out by combining some of them with each other or replacing some of them.

FIG. 5 shows the support column cover 3 of the third embodiment. In the cover main body 31 of the support column cover 3, two gutter-shaped curved portions having a semicircular cross section are provided side by side, and the strip-shaped deformed portion 34 that is easily deformed provides these two curved shapes. The parts are connected. The non-woven fabric may be thinned in the deformed portion 34, or the non-woven fabric may be made to retain flexibility. The reflector layers 33 and 33 are integrated on the outer periphery of each of the curved portions.

By arranging the support column cover 3 having such a form on the side surface of the support column P and deforming it so as to be bent by the band-shaped deformed portion 34, the two curved portions of the cover main body 31 cover the outer periphery of the support column P. As described above, the support column cover 3 can be arranged with respect to the support column P. If the flange portions of the cover body are fixed to each other in the state where the support column cover 3 is arranged, the support column cover 3 can be formed into a tubular shape and fixed to the support column. Alternatively, the support column cover 3 may be attached to the support column by binding the support column cover 3 so as to wrap it around the support column cover 3 with a string or a band so that the support column cover 3 does not open. Similar effects can be obtained with such an embodiment.

In the support column cover 3 of the third embodiment, when the cover is assembled into a tubular shape, the upper part of the cover body 31 is provided with two gaps at positions facing each other in the radial direction on the upper part of the support column cover. Is cut out. If the cables (C1, C2, C3) are passed through this gap, the entire support column (P) can be covered with one support column cover 3, and the cover can be attached more efficiently.

It should be noted that the support column cover does not necessarily have to be attached by forming the cover into a closed tubular shape, and the support column cover may be adhered to the outer peripheral surface of the support column P, or the support column cover may be screwed to the outer periphery of the support column P. It may be attached by doing so.

An example of a strut cover that does not become a closed tubular shape when attached is an example of a strut cover formed in a spiral shape. In this case, the cover body of the support column cover is formed so that the tape-shaped non-woven fabric is spirally wound. The spiral form may be a spiral form in which a predetermined gap is provided between the tapes, or a spiral form in which the tapes are in close contact with each other. A tape-shaped reflective material is integrated on the outer peripheral surface of the spirally formed cover body.

Such a strut cover can be attached to the strut by passing the strut through the space around the central axis of the spiral. Alternatively, the elasticity of the strut cover can be used to wrap the spiral strut cover around the strut so that the strut cover can be retrofitted to the strut of the cable-type protective fence that has already been laid.

Such a strut cover is, for example, a cover body in which a tape-shaped non-woven fabric is spirally wound around a core metal and pressed so that the non-woven fabric is compressed and has a predetermined rigidity to form the non-woven fabric into a spiral shape. At the same time, it can be manufactured by applying an adhesive to the outer periphery of the molded cover body and attaching a tape-shaped reflective material. A similar manufacturing method may be performed using an apparatus capable of causing a rotary feed motion while spirally winding a tape-shaped material (for example, a known hose manufacturing apparatus).

The strut cover can be used as a strut of a cable-type protective fence, and the visibility of the strut can be improved, which has high industrial utility value.

1 Support column cover 11 Cover body 12 Flange part (mounting part)
13 Reflective material layer P prop C1, C2, C3 cable

Claims (5)

It is a support cover that can be attached to the support of the cable type guard fence.
With the cover body
It has a reflective material layer that is laminated and integrated on the outer circumference of the cover body.
The cover body is mainly composed of a non-woven fabric that has been pressed into a curved or bent shape so that it becomes tubular when assembled to a support.
Support fence cover for cable type guard fence. The reflective material layer is composed of a sheet-shaped reflective material in which the reflective material is arranged between the base material layer and the surface protective layer.
The reflector layer is integrated into the cover body by adhesion or welding,
The support column cover of the cable type guard fence according to claim 1. The cover body is formed in a tubular shape, and slits are provided along the axial direction of the cylinder.
The support column cover of the cable type guard fence according to claim 1. The cover body is formed in a half-split shape,
The support column cover of the cable type guard fence according to claim 1. The method for manufacturing a support column cover for a cable-type protective fence according to any one of claims 1 to 4.
A heat pressing step of giving a predetermined shape to the cover body by sandwiching a non-woven fabric material containing hot melt fibers between dies and performing hot pressing is included.
Manufacturing method of the support fence of the cable type guard fence.

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