WIRE ROPE WITH REFLECTIVE TAPE, WIRE ROPE WITH FLUORESCENT TAPE, AND CABLE-TYPE TRAFFIC BARRIER

Abstract

Provided is a wire rope with a reflective tape (or a fluorescent tape), in which a reflective tape (12) (or a fluorescent tape) is wound around an outer periphery of a wire rope (11), and further having on its outer periphery a protective layer (13) formed of a translucent member, thereby improving visibility of the wire rope at nighttime, etc., and a cable-type traffic barrier using the wire rope with the reflective tape (or the fluorescent tape).

Claims

1. A wire rope with a reflective tape, wherein the reflective tape is wound around an outer periphery of the wire rope, further having an outer periphery thereof covered with a protection layer formed from a translucent material.

2. A wire rope with a fluorescent tape, wherein the fluorescent tape is wound around an outer periphery of the wire rope, further having an outer periphery thereof covered with a protection layer formed from a translucent material.

3. A cable-type traffic barrier comprising the wire rope with the reflective tape of claim 1.

4. A cable-type traffic barrier comprising the wire rope with the fluorescent tape of claim 2.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0014] FIG. 1 shows a wire rope with reflective tape (protection layer not shown) of an embodiment according to this invention.

[0015] FIG. 2 is a cross-sectional view of a wire rope with reflective tape of the embodiment.

[0016] FIG. 3 shows a cable-type traffic barrier.

[0017] FIG. 4 shows another example of a wire rope with reflective tape (protection layer not shown).

EMBODIMENT FOR CARRYING OUT THE INVENTION

[0018] The embodiment of this invention is described concretely below together with the drawings. Incidentally, the embodiment given below is one of the embodiments upon embodying this invention and is not intended to limit the invention within such a scope.

[0019] FIG. 1 is a schematic view showing a wire rope with reflective tape of an embodiment according to this invention, and FIG. 2 shows a cross-section of the wire rope with reflective tape. For convenience of illustration, in FIG. 1, a transparent resin tube (protection layer formed of translucent member) provided on an outermost layer is omitted.

[0020] As shown in FIGS. 1 and 2, a wire rope with reflective tape 10 of this embodiment has a wire rope 11 (3×7 wire rope in this embodiment) having a reflective tape 12 wound spirally around an outer periphery of the wire rope 11, with an outer periphery thereof further covered with a transparent resin tube (protection layer formed of translucent member) 13.

[0021] While a 3×7 wire rope 11 is used as an example in this embodiment, a wire rope of any configuration can be used.

[0022] The reflective tape 12 may be any reflective tape, such as a bead type or a prism type; however, it is preferable to have enough flexibility to be wound around the wire rope.

[0023] The reflective tape 12 is spirally wound around the outer periphery of the wire rope 11. The reflective tape 12 may be adhered to the wire rope 11 by having an adhesive layer or using an adhesive, etc., or may be simply wound without being adhered, etc. to the wire rope 11.

[0024] In this embodiment, an example is given where the reflective tape 12 is wound spirally in the same direction as the twisting direction of the wire rope 11; however, the twisting direction of the wire rope 11 and the spiral direction of the reflective tape 12 can be opposite.

[0025] The transparent resin tube 13 protects the wire rope 11 and the reflective tape 12, and is a tube made of a transparent resin in this embodiment. The wire rope 11 having the reflective tape 12 wound is inserted into the transparent resin tube 13 to form the wire rope with reflective tape 10.

[0026] As the transparent resin tube 13, a transparent heat-shrinkable tube may be used, and after the wire rope 11 having the reflective tape 12 wound thereto is inserted, heat may be applied for adherence.

[0027] FIG. 3 is a diagram schematically showing a cable-type traffic barrier. A cable-type traffic barrier 100 is provided with terminal posts 103 installed at both ends thereof, intermediate posts 102, and wire ropes supported by each post along a roadway.

[0028] Visibility of the wire rope of the cable-type traffic barrier at nighttime, etc. is improved by using the wire rope with reflective tape 10 as the wire rope. Namely, according to the wire rope with reflective tape 10 of this embodiment, since the light of a headlight of a vehicle, etc. is reflected by the reflective tape 12, the wire rope has high luminance and excellent visibility as compared to those with a resin wire including the luminous material as disclosed in Japan Patent No. 6368449.

[0029] Further, in winding the resin wire around the wire rope as in Japan Patent No. 6368449, the resin wire forms a projection in the cross-sectional shape as shown in FIG. 2, etc. of Japan Patent No. 6368449. Such a projection is likely to be damaged during construction or vehicle contact, and the resin wire is easily broken. If the thickness of the resin wire is reduced, it is possible to reduce formation of the projection of the resin wire in the cross-sectional shape. However, the reduced thickness of the resin wire causes a problem where the effect of improving visibility is reduced.

[0030] On the other hand, since the wire rope with reflective tape 10 of this embodiment uses the reflective tape 12, the above-described problem can be reduced.

[0031] The resin wire of Japan Patent No. 6368449 is likely to be broken as mentioned above, and if the resin wire is cut even at one location, the resin wire may be loosened from such a point and may fall off.

[0032] On the other hand, since the wire rope with reflective tape 10 of this embodiment is covered with the transparent resin tube 13 as a protection layer, damage or breakage of the reflective tape 12 is reduced, and even if a local breakage occurs, the reflective tape 12 does not loosen and fall off therefrom.

[0033] As described above, according to the wire rope with reflective tape 10 of this embodiment, visibility of the wire rope at nighttime, etc. is improved by winding the reflective tape 12. Further, due to being covered with the transparent resin tube 13, the reflective tape 12 is prevented from being damaged or falling off.

[0034] In this embodiment, the wire rope with reflective tape 10 is used for a cable-type traffic barrier as an example. However, the present invention is not limited thereto, and the wire rope with reflective tape 10 can be used for various applications.

[0035] When the wire rope with reflective tape 10 is used for the cable-type traffic barrier, the wire rope with reflective tape 10 may be used for all the wire ropes, or the wire rope with reflective tape 10 may only be partially used.

[0036] For example, when only one wire rope with reflective tape 10 is used, the use of the wire rope with reflective tape 10 for the topmost wire rope is considered to have a great effect of improving visibility.

[0037] In this embodiment, an example is given where the reflective tape is wound; however, a fluorescent tape may be wound. Further, both of the reflective tape and the fluorescent tape may be wound, and a light-accumulating tape may further be wound.

[0038] A retroreflective tape may be used as the reflective tape.

[0039] In this embodiment, the transparent resin tube 13 is used as the protection layer. However, it is sufficient as long as light can be transmitted and capable of coating the wire rope as a protection layer. For example, the wire rope may be coated with resin, etc. (any coating method can be used).

[0040] Any winding manner can be used for winding the reflective tape around the wire rope.

[0041] FIG. 4 shows another example of the wire rope with reflective tape (protection layer not shown).

[0042] For example, the number of the reflective tapes to be wound around the wire rope is arbitrary, and FIG. 4(a) shows as an example a wire rope with reflective tape 10′ wound with two reflective tapes 12′.

[0043] The area of the reflecting surface can be easily adjusted by adjusting the width of the reflective tape, the number of the tapes to be wound, or the pitch of winding. For example, the surface of the wire rope may be covered almost entirely with the reflective tape by applying narrower pitches.

[0044] In this embodiment, the reflective tape is spirally wound as an example. However, this invention is not limited thereto, and for example, as shown in FIG. 4(b), the wire rope with reflective tape 10″ may be wound with a reflective tape 12″ in a ring-like manner.

DESCRIPTION OF REFERENCE NUMERALS

[0045] 10 wire rope with reflective tape [0046] 11 wire rope [0047] 12 reflective tape [0048] 13 transparent resin tube (protection layer formed by translucent material) [0049] 100 cable-type traffic barrier