JP2002061115A - Cable water stop cover - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cable water stop cover easily manufacturable according to an eccentric quantity, the eccentric direction and a diametral difference in a cable. SOLUTION: In this cable water stop cover 3 for installing one end fastening part 4a in close contact on an outer peripheral surface of the cable 1 and the other end fastening part 4b in close contact on an outer peripheral surface of an installing pipe 2, cylindrical members 5a and 5b are arranged between the outer peripheral surface of the cable 1 and/or the outer peripheral surface of the installing pipe 2 and the fastening parts 4a and 4b.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cable waterproof cover, and more particularly, to a cable waterproof cover that can be easily manufactured according to the amount of eccentricity of a cable and the difference in eccentricity direction and diameter.

[0002]

2. Description of the Related Art Various cables are widely used for supporting bridge girder of a cable stayed bridge. As shown in FIG. 3, a fastening portion 4a at one end is provided on the outer peripheral surface of the cable 1 on the outer peripheral surface of the tubular mounting pipe 2 at the lead-in portion where this cable is attached to a bridge girder or a tower. Attach the funnel-shaped rubber water-stop cover 3 so that the fastening part 4b at the other end is in close contact to prevent rainwater from entering the drop-in part and prevent damage to the cable 1 and bridge components due to corrosion. It is configured to be.

However, if the position of the core of the cable 1 deviates from the center axis of the mounting pipe 2 by a large amount of eccentricity due to an error in the construction of the cable 1 or the mounting pipe 2, the cable waterproof cover 3 will be described.
In order to fix the cable, it is necessary to forcibly deform the cable waterproof cover 3 itself, or to cut and incline the inner surfaces of the tightening portions 4a and 4b according to the size, thereby deteriorating the workability and mounting. There is a problem that the deformation follow-up amount of the cable waterproof cover 3 is adversely affected later. For this purpose, the inner surface of the tightening portion which comes into contact with the cable 1 or the mounting pipe 2 of the tightening portion 4a or 4b is configured to be eccentric, and the cable waterproof cover 3 corresponding to the eccentricity of the cable 1 is provided. Have been made. However, in order to cope with various eccentricity amounts and eccentric directions, it is necessary to manufacture while exchanging a mold member (core) for molding a portion abutting on the inner peripheral surface of the tightening portion. And the workability deteriorates. In addition, when the cable 1 and the mounting pipe 2 are made to correspond to the difference in diameter, the production is performed while exchanging the cores having different diameters in the same manner. Was.

[0004]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a cable waterproof cover which can easily manufacture a cable according to the amount of eccentricity, the eccentric direction and the difference in diameter.

[0005]

According to the present invention, there is provided a cable waterproof cover for attaching a tightening portion at one end to an outer peripheral surface of a cable and attaching a tightening portion at the other end to an outer peripheral surface of a mounting pipe. There is provided a cable waterproof cover in which a cylindrical member is arranged between an outer peripheral surface and / or the outer peripheral surface of the mounting pipe and the fastening portion.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The configuration of the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 and FIG.
FIG. 2 which is a sectional view taken along the line AA of FIG. 2 shows an example in which the cable waterproof cover according to the present invention is used for a cable-stayed bridge, and one end of a cable 1 having the other end fixed to a bridge tower (not shown) is used as a bridge girder. FIG. 4 is a cross-sectional view of a pull-in portion to be attached. FIG. 1 shows a case where the cable 1 is eccentric with respect to the center axis of the mounting pipe 2 in the upper part of the figure, but a cable made of funnel-shaped rubber is provided on the outer peripheral surface of the cable 1 via a cylindrical member 5a. Tightening part 4 of water stop cover 3
a is attached closely. A stainless steel band is wound around the outer peripheral surface of the fastening portion 4a as fastening means 6, and the fastening portion 4a is fastened to fix the cable waterproof cover 3 to the cable 1.

On the other hand, the cylindrical member 5 is also provided on the outer peripheral surface of the mounting pipe 2.
b, the fastening portion 4b of the cable waterproof cover 3 is attached in close contact therewith. Similarly, a stainless steel band is wound around the outer peripheral surface of the tightening portion 4b as the fastening means 6, and the tightening portion 4b is tightened to tighten the cable waterproof cover 3.
Is fixed to the mounting tube 2.

As shown in FIG. 2, which is a cross-sectional view taken along the line AA of the fastening portion 4a in FIG. 1, these cylindrical members 5a, 5b are configured such that their inner peripheral surfaces are eccentric. Since the cable 3 can cope with a large eccentricity of the cable 3, it is not necessary to forcibly deform and attach the cable waterproof cover 3, and the mounting workability is good. In addition, the cylindrical member 5
Since a and 5b are manufactured separately from the main body of the cable waterproof cover 3, the main body of the cable waterproof cover 3 is manufactured in the same shape, and the cylindrical members 5a and 5a which are small members are formed.
b, various kinds of cables according to the amount of eccentricity and the diameter of the cable 1 are manufactured in various forms, and the main body of the cable waterproof cover 3 and the cylindrical members 5a and 5b are fitted while aligning the eccentric directions. The productivity is greatly improved as compared with the case where various cable waterproof covers 3 are manufactured according to the eccentricity and the diameter of the cable 1.

Incidentally, 7a and 7b in FIG.
These are convex portions provided circumferentially inside a and 5b, and are configured to be fitted into concave portions of the main body of the cable waterproof cover 3. 8a of FIG. 2 shows that the cylindrical member 5a is
It is a split butting part to be attached to the.

The cable waterproof cover 3 is formed in a funnel shape and is axially cut off at one location on the circumference to insert the cable 1 and the mounting pipe 2. Each is provided with a flange portion 9 shown in FIG. 1, and is configured to be fastened and joined via a bolt portion or the like via the flange portion 9. Note that the cable waterproof cover 3 may be formed by winding a sheet-like member, and overlapping and fixing the terminal portions thereof.

The cylindrical member may not be used for both the tightening portion 4a and the tightening portion 4b, but may be arranged on only one of them. Further, a sealing material may be applied to a gap between the cylindrical member and the fastening portion to improve the adhesion, that is, the water stopping property.

The material of the cable waterproof cover and the cylindrical member of the present invention is not particularly limited as long as it is an elastic member such as rubber or resin, but it is preferable to use weather-resistant rubber such as EPDM and CR. In addition, their shapes and sizes may be appropriately set according to the conditions of the structure to be attached.

The cable waterproof cover according to the present invention is also applicable to various types of bridges other than cable-stayed bridges, and to fixing and fixing portions of cables used in buildings.

[0014]

According to the present invention, by arranging a cylindrical member between the outer peripheral surface of the cable and / or the outer peripheral surface of the mounting pipe and the tightening portion of the cable waterproof cover, the eccentric amount and eccentric direction of the cable can be improved. In addition, it is possible to obtain a cable waterproof cover that can be easily manufactured according to the difference in diameter.

[Brief description of the drawings]

FIG. 1 is a sectional view of a cable waterproof cover according to the present invention.

FIG. 2 is a sectional view taken along the line AA of FIG.

FIG. 3 is a cross-sectional view of a conventional cable waterproof cover.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cable 2 Mounting pipe 3 Cable waterproof cover 4a, 4b Tightening part 5a, 5b Cylindrical member 6 Fastening means 7a, 7b Convex part 8a Dividing butting part 9 Flange part

Claims (2)

[Claims] 1. A cable waterproof cover for attaching a tightening portion at one end to an outer peripheral surface of a cable and a tightening portion at the other end to an outer peripheral surface of a mounting tube, wherein the outer peripheral surface of the cable and / or the outer peripheral surface of the mounting tube. A water blocking cover having a cylindrical member disposed between the cover and the fastening portion. 2. The cable waterproof cover according to claim 1, wherein said cylindrical member is eccentric.