JP2863690B2 - Wire rope with composite fiber core - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a moving cable for winding up a coal mine, a mine shaft, a cable for a normal cableway, a balancing cable, a cable for tensioning, and a cable for a steel cable railway (cable car). The present invention relates to a wire rope with a composite fiber core used.

[0002]

2. Description of the Related Art As a cored wire rope, a wire rope (IWRC) whose core cord is a wire rope,
There is a wire rope whose core rope is a fiber rope. In the wire rope in which the cord is a fiber rope, there are a cord using synthetic fibers such as polypropylene and polyester and a cord using natural fibers such as hemp.

[0003] Although the wire rope of the IWRC whose core rope is a wire rope is excellent in breaking load, it has poor flexibility and is not suitable as a moving rope to which bending is repeatedly applied. On the other hand, a wire rope whose fiber rope is a fiber rope is inferior to an IWRC wire rope in breaking load, but is excellent in flexibility. A wire rope which is a fiber is generally used.

[0004] In general, a wire rope used as a moving rope is subjected to socket processing with a molten metal at its end portion, and is used for actual use. That is, the terminal of the wire rope is inserted into a metal socket, and the terminal is loosened for each wire. In this state, a metal such as molten zinc is cast into the socket and the socket is inserted into the terminal of the wire rope. Is fixed, and the terminal portion of the wire rope is connected to a predetermined fixing portion via the socket for use.

[0005] Here, in the case of a wire rope in which the mandrel is a synthetic fiber, the heat resistance of the mandrel (250% of polyester fiber).
° C) is low, and the heat generated during socket processing may cause abnormal deformation of the cord, which may cause early damage from the mouth of the socket during use. A wire rope using a heat-resistant natural fiber is used as a cord.

[0006]

However, in a wire rope in which the cord is a natural fiber, the rope grease impregnated in the cord disappears relatively early due to repeated bending and tensile loads, In addition, the penetration of water such as rainwater into the core rope is severe, and the degree of corrosion progresses inside the wire rope. There is a drawback that causes such as.

The present invention has been made in view of such a point, and it is an object of the present invention that socket processing using molten metal can be performed, and excellent durability is secured by suppressing internal corrosion. It is an object of the present invention to provide a wire rope with a composite fiber core.

[0008]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention incorporates a mandrel made of natural fibers such as manila hemp and sisal hemp into a fixed section of a terminal of a wire rope. A cord made of synthetic fiber such as polypropylene or polyester is incorporated in the middle section except for the section of the above, and the cord of these natural fibers and the cord of synthetic fiber are integrally connected by a splicer, and this wire A socket process is applied to the end of the rope using molten metal.

[0009]

When a socket is formed on the end of a wire rope using molten metal, the core inside the end is a natural fiber having high heat resistance. The socket can be properly processed without causing deterioration. In most sections on the middle side of the wire rope, the inner cord is made of synthetic fibers, and the synthetic cord has excellent oil-impregnating and oil-retaining properties. And the durability is reliably improved.

[0010]

An embodiment of the present invention will be described below with reference to the drawings. The figure shows a side view of a wire rope 1 with a composite fiber core, and this wire rope 1 has a structure of, for example, 6 × WS (26). In the wire rope 1, in the section L 1 of the terminal on both ends, the core rope 1 a inside is a rope of natural fibers such as Manila hemp and sisal, and the section L 1 of the terminal on both ends.
In the middle section L2 except for the
b is a rope of synthetic fiber such as polypropylene or polyester, and the cord 1a of the natural fiber and the cord 1b of the synthetic fiber are integrally connected by a splicer 3.

[0011] Fixing sockets 2 are attached to the ends of both ends of the wire rope 1 by socket processing using molten metal. In the wire rope 1 having such a configuration, since the mandrel 1b disposed inside most of the section L2 is a rope made of synthetic fiber, the durability is greatly improved. That is, when the cord is a synthetic fiber, the cord has good oil-retaining property and oil-retaining property, and therefore, as in this embodiment, the cord 1b inside the section L2 of most of the entire length is synthesized. In the wire rope 1 made of fiber, the rope grease is favorably retained for a long period of time by the synthetic fiber cord 1b, so that corrosion inside the wire rope 1 is suppressed and durability is ensured. And its life is greatly extended.

When the end portion of the wire rope 1 is subjected to socket processing using a molten metal, since the core rope 1a inside the section L1 of the terminal is a natural fiber having high heat resistance, the molten metal is used. The socket processing can be performed without any problem without deterioration due to heat.

Since the terminal of the wire rope 1 is cut by so-called truncation in the middle of its use period, the section L1 of the terminal using the natural fiber cord 1a is determined in consideration of the truncation. Ensure a sufficient length in advance.

[0014]

As described above, according to the present invention,
When performing socket processing using the molten metal at the end of the wire rope, since the core cord inside the terminal part is a natural fiber having high heat resistance, the socket cord is appropriately formed without deteriorating the cord. Processing can be performed, and since the cord inside the most section on the middle side of the wire rope is made of synthetic fiber, the rope grease can be favorably applied to the inside of the wire rope for a long time by the cord made of the synthetic fiber. To improve durability.

[Brief description of the drawings]

FIG. 1 is a side view of a composite fiber core-containing wire rope according to an embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Wire rope 1a ... Core fiber of natural fiber 1b ... Core cable of synthetic fiber 2 ... Socket 3 ... Splice

Claims (1)

(57) [Claims] Claims: 1. A wire rope having a core rope incorporated therein and a socket processed at a terminal portion, wherein a core rope made of a natural fiber is incorporated inside a fixed section of a terminal of the wire rope. A cord composed of synthetic fibers is incorporated inside the section on the intermediate side excluding the section of the terminal, and the cord of these natural fibers and the cord of synthetic fibers are integrally connected by a splice. Wire rope with composite fiber core.