JPH0338241Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a structure for fixing cable terminals, and relates to a structure for fixing the terminals of cable materials used in suspension bridges, cable-stayed bridges, suspended roofs, etc.

(Prior art) Suspension bridges illustrated in Fig. 8, buildings illustrated in Fig. 9, suspended roofs illustrated in Fig. 10, etc. are made by bundling a large number of steel wires. A cable is used which is unbundled and secured by a socket.

That is, in FIG. 8, both ends of the suspension bridge 1 main cable 2 are fixed to anchors 3, and
The hanger rope 4 is suspended from the main cable 2 and fixed to the bridge girder 5.

In FIG. 9, a building 6 is fixed to its roof 9 or the like by extending a cable 8 from the top of a support 7.

Furthermore, in FIG. 10, columns 10 are erected at predetermined intervals, and the ends of cables 11 stretched radially from the columns 10 are fixed to a roof 12 to form a suspended roof structure.

Rust prevention measures are essential for these various cables (hanger ropes are also considered cables), and as countermeasures, painting, covering with rubber, plastic, polyethylene, etc., and gap filling such as injection of epoxy resin have been adopted so far.

Furthermore, as disclosed in Japanese Utility Model Publication No. 56-13374, a water shielding device with an umbrella-shaped outer shape is provided, a hanger rope is inserted through this water shielding device, and the material is sealed with zinc or the like. There is.

(Problem to be solved by the invention) However, in any of the conventional techniques,
Water that has flowed down inside and outside the cable accumulates near the anchorage, which causes corrosion of the cable terminals.

In the case of painting or covering, there are many cases in which water enters through small defects and accumulates in the fixing area. Once water has entered, the painting or covering has the opposite effect and does not dry easily, causing corrosion.

Furthermore, in the case of gap filling, water tends to accumulate in filling defects and at the boundary between filled and unfilled areas, which causes corrosion.

Corrosion of these cables is a serious defect in that the cables may be cut because they carry loads and wind pressure, and such a situation may occur inside the cable anchorage. If this occurred, it would be difficult to inspect, which could lead to a serious accident.

In view of this situation, the present invention was designed from the perspective of preventing water from entering, whereas all of the conventional examples were conceived from the perspective of preventing water from entering.In contrast, the present invention is designed to promptly remove water from the outside even if water enters for some reason. The purpose of the present invention is to provide a fixing structure that prevents rust by allowing escape and promoting drying in the fixing part.

(Means for Solving the Problems) The technical means taken by the present invention to achieve the above-mentioned object is characterized by the fact that the end of the cable, which is made by bundling a large number of steel wires, is unbundled into a fixing tube. In the case where the cable end is inserted into a socket and the inserted cable end is fixed through a filler, the mouth part 26 of the inner circumference of the cylindrical socket 22
A drainage channel 25 extending downward from the cylindrical socket 22 and communicating with the outside of the cylindrical socket 22 is formed in the cylindrical socket 22 or the filler 24.

(Function) Water that enters the outer circumferential surface of the cable 20 and the inside thereof is passed down the cable 20 and collected at the mouth portion 26 of the cable 22.

Water accumulated in the mouth portion 26 is discharged to the outside of the socket 22 via the drainage channel 25.

(Example) An example of the present invention will be described in detail with reference to FIGS. 1 to 7.

In FIGS. 1 to 7, a cable 20 (including a hanger rope) is formed by bundling a large number of steel wires (including a high-tensile steel wire) 21 in parallel.

Reference numeral 22 designates a cylindrical socket, and a pressure-bearing type having a cone-cylindrical shape and fixed via a pressure-bearing plate 23 is exemplified.

The end of the cable 20 is unbundled and inserted into a cylindrical socket 22, and fixed therein via a filler 24 such as zinc casting or resin injection.

A drainage channel 25 extends downward from the mouth portion 26 of the socket 22 and communicates with the outside of the socket 22.

In the first embodiment shown in FIGS. 1 and 2, drain channels 25 are formed radially from the mouth portion 26 to penetrate the socket 22 in the radial direction.

Water accumulated at the bottom of the mouth portion 26 can be discharged to the outside. In this case, the mouth area 26
It is desirable that the bottom of the drainage channel 25 has a conical shape that follows the slope of the drainage channel 25.

In the second embodiment shown in FIGS. 3 and 4, one or two or three core steel wires 21 of the cable 20 are cut at a portion 21A, and a filling material 24 and a drainage channel 25 are placed on the extension line of the steel wire 21. is formed to extend downward from the mouth portion 26.

In the case of this embodiment, water that has entered the inside of the cable 20 and flowed down can be allowed to escape to the outside through the drainage channel 25.

In this case, the bottom of the mouth part 26 is the central drainage channel 2.
5, it is desirable to have a so-called funnel shape that is inclined downward in the centripetal direction.

In the embodiment shown in FIGS. 5 and 6, drainage channels 25 are formed radially on the inner circumferential surface of the socket 22 in the longitudinal direction of the socket, and in this case as well, water accumulated in the mouth portion 26 is drained. It escapes to the outside through the drainage channel 25.

In the case of the embodiments shown in FIGS. 5 and 6, the drainage channel 25 may be formed vertically through the wall portion of the socket 22 on the condition that it communicates with the mouth portion 26 and communicates with the outside. A slit-shaped drainage channel 25 may be formed on the outer peripheral surface of the material 24.

The embodiment shown in FIG. 7 is a combination of the first embodiment (FIGS. 1 and 2) and the second embodiment (FIGS. 3 and 4) described above, and as is clear from this example, each embodiment It is possible to create a structure that combines.

The filler 24 also corresponds to the cone core, and can be manufactured using a split mold, etc. At this time, the part where the drainage channel 25 will be made is made of asbestos, etc. after casting. Just remove it.

(Effect of the invention) According to the invention, the mouth part 26 of the socket 22
The accumulated water flows through the drain channel 25 to the socket 22.
Water can be drained outwards by the action of gravity, thereby reducing the cause of cable corrosion and keeping the anchorage dry.

This not only extends the life of the cable 20 but also saves the cost of repair and replacement, and is therefore useful as a fixing structure for various cables as illustrated in FIGS. 8 to 10. .

Furthermore, by observing and analyzing the water flowing out from the drainage channel 25, it can be used as a guide for checking the internal health of the cable 20, and serious incidents can be prevented from occurring.

[Brief explanation of the drawing]

The drawings show various embodiments and application examples of the present invention; FIG. 1 is an elevational sectional view of the first embodiment, FIG. 2 is a plan sectional view of the same, and FIG. 3 is an elevational sectional view of the second embodiment. 4 is a sectional view of the same plane, FIG. 5 is an elevational sectional view of the third embodiment, FIG. 6 is a sectional view of the same plane, FIG. 7 is an elevational sectional view of the fourth embodiment, FIGS. 8 to 10 are explanatory diagrams showing three examples of application. 20... Cable, 21... Steel wire, 22... Socket, 24... Filler, 25... Drainage channel, 26
...mouth area.

Claims (1)

[Claim for Utility Model Registration] The terminal end of a cable made of a large number of steel wires is unbundled and inserted into a cylindrical fixing socket, and the inserted cable terminal is fixed via a filler. In the case, the mouth part 26 on the inner circumference of the cylindrical socket 22
A cable terminal fixing structure characterized in that a drainage channel 25 extending downward from the cylindrical socket 22 and communicating with the outside of the cylindrical socket 22 is formed in the cylindrical socket 22 or the filler 24.