JPS583945Y2 - End fastening device for resin-coated steel cables - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a resin-coated steel cable end unfastening device for fastening the ends of a steel cable whose outer periphery is coated with resin.

Steel cables that are installed and used in the ocean for long periods of time are usually coated with resin around their outer peripheries to prevent rust and corrosion.

The ends of such steel cables are fastened with socket fasteners and connected to a predetermined connecting portion.

To explain this fastening structure, a steel cable is inserted into a socket formed into a tapered cylindrical shape from its small diameter opening side, and the insertion end is separated for each strand or each wire.

Next, a metal with a low melting point is cast into the socket, and as the metal solidifies, the steel cable is fastened to the socket.

However, when a steel cable is installed underwater for a long period of 15 years or more, seawater gradually enters through the small diameter opening of the socket, corroding the dissected proximal end of the steel cable.
As a result, a situation has arisen in which the steel cable breaks from the mouth of the socket much earlier than expected.

For this reason, attempts have been made to seal the small-diameter opening of the socket with synthetic resin, but ordinary synthetic resins tend to become keratinized and crack relatively quickly due to aging and the influence of seawater temperature differences. Therefore, even with such measures, it was difficult to prevent seawater from entering for a long period of time, and early breakage of the steel cables was inevitable.

In view of the above, this invention aims to provide a device for untying the ends of resin-coated steel cables, which is capable of constantly preventing the intrusion of seawater, etc., and reliably fastening and holding the steel cables for a long period of time. It is.

An embodiment of this invention will be described below with reference to the drawings.

In the figure, reference numeral 1 denotes a socket formed into a tapered cylindrical shape, and a cylindrical body 3 is attached to the small-diameter opening side of one end of the socket via a screw 2, and a groove 4 is formed along the inner circumference of this cylindrical body 3. There is.

Reference numeral 5 denotes a steel cable whose outer periphery is covered with a resin layer 6, and the terminal end of this steel cable 5 is fastened to the socket 1 in the following manner.

That is, the resin layer 6 on the outer periphery of the end of the steel cable 5 is removed, and the removed portion of the steel cable 5 is separated for each strand or each wire, and in this state, the end portion of the steel cable 5 is removed from the small diameter opening side of the socket 1. The socket 1 is inserted into the interior thereof, and the releasable portion is located on the large-diameter opening side of the socket 1, and the resin layer 6 is located on the small-diameter opening side.

Next, a molten metal with a low melting point such as white metal is poured into the socket 1 from the large-diameter opening side of the socket 1, and the outer peripheral portion of the boundary between the resin layer 6 and the dissociated portion is buried with the metal 7.

The reason for using a low melting point metal such as white metal is to prevent the resin layer 6 from dissolving.

Thereafter, molten metal such as zinc alloy is further cast from the large-diameter opening side of the socket 10, and the dissociated portion is buried with this metal 8.

Through such processing, the steel cable 5 is reliably fastened to the socket 1 via the metals 7 and 8, and is connected to a predetermined connecting portion by this socket 1.

Incidentally, after the metal γ, 8 is cast, the groove 4 is densely filled with a non-solidifying fluid substance, such as tar 11, through the gap 10, and this tar 11 causes the socket 1 to
A space between the small diameter opening of the steel cable 5 and the surface of the resin layer of the steel cable 5 is liquid-tightly sealed.

After the gap 10 is filled with tar 11, it is appropriately sealed with mastic or the like.

According to such a configuration, the socket 1 is damaged by the tar 11.
It is possible to reliably prevent seawater etc. from entering the interior.

Since tar 11 is a non-solidifying fluid substance, it retains almost its original properties over a long period of time without becoming keratinized due to aging or temperature differences in seawater, etc. Even for a long period of time, such as 5 years, the steel cable 5 always reliably prevents seawater from entering.
It is something that can be protected.

[Brief explanation of the drawing]

The figure is a sectional view showing an embodiment of this invention. 1... Socket, 4... Concave groove, 5... Steel cable, 6...
... Resin layer, 7, 8... Cast molten metal, 11... Tar (non-solidifying fluid substance).

Claims (1)

[Scope of utility model registration request] The end of a steel cable whose outer periphery is coated with resin is inserted into a socket formed into a tapered cylindrical shape from the small diameter opening side, and the inserted part is fastened with molten cast metal into the socket. A groove is formed along the inner periphery of the mouth, and this groove is filled with a non-solidifying fluid substance such as tar, and this fluid substance creates a liquid tight seal between the small diameter mouth of the socket and the resin surface of the steel cable. A device for unfastened ends of resin-coated steel cables sealed in.