JPH10168772A - Fiber rope containing wire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a fiber rope containing wire, useful as a mooring line such as buoy without impairing transmitting and communicating functions of wire by helically winding the wire and flexible linear body around a core made of fiber having high strength and modulus and successively providing a stationary layer and an outer layer thereon. SOLUTION: This fiber rope containing wire is obtained by forming a protective layer 2 braided with a polyester fiber yarn around a core 1 composed of high-strength and high-modulus fiber such as aramid, arranging plural wires 4 and a flexible linear body 5 such as polyurethane having a diameter or area which is larger by 10-30% than that of the wires 4 in no-load state between these wires 4 and 4 on the outer periphery of the protective layer 2 and winding the wires and the linear body around the protective layer, further providing a water-permeable stationary layer 6 winding yarn, tape, belt fabric, etc., on the circumference and providing an outer layer 7 made of a polyester fiber and having braiding structure on the circumference.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fiber rope with an electric wire.

[0002]

2. Description of the Related Art As a means for imparting a communication function and a power transmission function to a rope, a fiber rope with an electric wire or a fiber rope with an electric wire has been conventionally known. Such a fiber rope with an electric wire has a structure in which an electric wire is inserted into the center of each strand when the rope has a twisted structure, and an electric wire is inserted into a central hollow portion when the rope has a braided structure. However, fiber ropes have much larger stretches than wire ropes. In the cross section at right angles, stress in the center direction (radial force) occurs, which causes the wire to be strongly compressed from the radial direction and damaged,
There was a problem that the function as an electric wire was reduced or disappeared. For this reason, conventionally, in the case of a fiber rope with an electric wire, the limit of the load applied to the rope must be determined so as not to deteriorate the electric wire function, and the rope must be used under a safety factor higher than the intrinsic safety factor of the rope. In this case, the diameter of the fiber rope is unnecessarily large and the tensile strength is large, which makes it difficult to sufficiently cope with the recent use environment of the fiber rope.

That is, in recent years, with the development of marine development,
There is a pressing need for mooring lines for buoys to have a signal transmission function. In this case, the rope must be large in diameter and high in strength in order to exhibit a sufficient function as a mooring line for buoys, and the rope must be sufficiently used as long as the rope can withstand the tensile strength. In this regard, the appearance of a high-strength and high-elasticity fiber typified by aramid fiber and ultra-high molecular weight polyethylene fiber makes it possible to make a rope with considerably high strength. However, in such a rope, when the electric wire is inserted into the center of the strand or the center of the rope as described above, the function of the electric wire is lost when the function as the mooring line is exhibited, and conversely, the function of the electric wire is lost. If they try to make use of them, there arises a problem that the intended purpose of the high strength property is not exhibited.

[0004]

DISCLOSURE OF THE INVENTION The present invention has been made by research to solve the above-mentioned problems, and its purpose is to exhibit the original strong characteristics of a rope. Moreover, it is still another object of the present invention to provide a fiber rope with a wire which is extremely effective as a mooring line having a communication function and a power transmission function without impairing the function of the wire. In addition,
In the present invention, “electric wire” is a concept including both power lines and signal lines.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a plurality of electric wires arranged around the outer periphery of a core made of high-strength and high-modulus fibers and a flexible wire between the electric wires. Are arranged, spirally wound around the outer periphery of the core, and further provided on the outer periphery thereof a water-permeable fixing layer for fixing the electric wire and the linear body, and an outer layer made of synthetic fiber is provided on the outer periphery of the fixing layer. The configuration is as follows. A protective layer made of synthetic fiber may be provided around the core, and the electric wire and the wire may be arranged around the outer periphery of the protective layer and spirally wound. The protective layer preferably has a braided structure. The linear body is appropriately thicker than the diameter of the electric wire in a no-load state.
It is preferable to use one that is about 30% thicker. In the present invention, the “linear body” is not limited as long as it is flexible and can be wound, and a synthetic polymer, a metal, or a composite thereof can be used. The fixing layer is formed by winding a strip such as a yarn, a tape, and a band cloth. The strip may have water permeability or may not have water permeability. In the latter case, it may be wound so as to leave a gap between the turns without making the strips overlap in the width direction of the strip. The surface layer preferably has a braided structure.

[0006]

Embodiments of the present invention will be described below with reference to the accompanying drawings. 1 to 3 show a first embodiment of a fiber rope with a wire according to the present invention. Reference numeral 1 denotes a core to be a strong matrix, which is a fiber having good electrical insulation, high strength, high elastic modulus and low elongation, for example, a tensile strength of 20 gf / D or more, an elongation of 3 to 5%, Those having a tensile modulus of 500 gf / D or more are used. Examples of fibers having this property include high-performance fibers such as aramid fibers, ultrahigh molecular weight polyethylene, and polyarylate. The core 1 is constructed by braiding a strand 10 in which yarns made of such fibers are twisted. Its structure is arbitrary such as 8 hits, 12 hits, 16 hits, 24 hits. Reference numeral 2 denotes a protective layer (fourth layer) provided in close contact with the outer periphery of the core 1 to protect the core 1 as the strong base.
Layer). The protective layer 2 is formed by twisting a strand 20 obtained by twisting a yarn made of a general-purpose fiber having a higher elongation than the fiber used for the core 1, for example, a fiber selected from polyester, nylon, etc. It is braided.

[0007] Reference numeral 3 denotes an electric wire arrangement layer (third layer).
It consists of a combination of (four in this example) electric wires 4 and a flexible linear body 5. Each of the electric wires 4 and 4 is a conductor 4
The outer periphery of the protective layer 2 is arranged at regular intervals on the outer periphery of the protective layer 2. The linear body 5 is disposed between the wires 4. In this example, a total of eight linear bodies 5 are arranged between two adjacent electric wires 4. The electric wire 4 and the linear body 5 are spirally wound around the outer periphery of the protective layer 2. FIG. 3 shows this state. The linear body 5 may have any suitable elasticity (shrinkability) and flexibility, and may be, for example, a stranded stainless steel wire, a synthetic polymer rod, or a string or cord of synthetic fiber. No. Specific examples include a 1 × 19 stainless steel wire, a urethane resin rod, and a nylon cord. The cross-sectional shape of the linear body 5 is arbitrary such as circular or rectangular, and may be solid or hollow. However, in order to reduce the influence of external force that the electric wire 4 receives from a fixed layer or an outer layer described later, It is preferable to have a diameter (cross-sectional area) larger than the diameter of the electric wire 4 so as to appropriately project from the winding diameter of the electric wire 4 in a no-load state.

Although the degree of increase in the diameter of the linear body 5 depends on the degree of shrinkage of the linear body 5, it is generally about 10
What is necessary is just to select from the range larger by 30%. When the thickness is less than 10% of the diameter of the electric wire, when a force from the fixed layer or the outer layer acts, the force may directly act on the electric wire 4, which is not preferable. However, when the thickness is more than 30% of the diameter of the wire 4, the wire 4 floats and moves away from the protective layer 2, although it is effective in preventing the influence of external force on the wire 4. It is not preferable because there is an inconvenience that the offset occurs. Electric wire 4 and linear body 5
The winding pitch of the core 1 and the protective layer 2 is appropriately selected so as to follow the elongation of the core 1 as a strong base. For example, the winding pitch may be about 5 to 9 times the total diameter of the core 1 and the protective layer 2. .

Reference numeral 6 denotes a fixing layer provided on the outer periphery of the electric wire arrangement layer 3 for fixing the electric wire 4 and the linear body 5 so as not to move.
(Second layer). The fixed layer 6 needs to have water permeability so as to allow water to penetrate into the inside of the rope and to minimize the influence of the water pressure on the rope even when used at a deep water depth. . The water permeability may be provided in the member constituting the fixed layer itself. Alternatively, the members constituting the layers themselves have no water permeability,
Water permeability may be obtained depending on the degree of attachment to the electric wire arrangement layer 3.

In the first embodiment, the former embodiment is adopted, in which a porous strip 60 is used, which is
Is spirally wound around the outer periphery of. This porous strip 6
Examples of zero include a woven or knitted synthetic fiber, a nonwoven fabric, or a porous tape or band cloth having a large number of holes formed by perforation. However, the strip 60 is not limited to this, and may be, for example, a yarn or a strand of about 1.5 mm to 3 mm. Synthetic fibers and fibers having a certain degree of elongation, such as polyester and nylon. In the case where the strips themselves have water permeability, the strips 60 may overlap in the winding width direction. The strip 60 may have an adhesive layer or an adhesive layer on the side facing the electric wire arrangement layer 3. Reference numeral 7 denotes an outer layer (first layer) covering the outer periphery of the fixing layer 6, which is made of braided synthetic fiber having good abrasion resistance such as polyester. 16 shots, 2 × 32 shots, etc. may be used.

FIG. 4 shows a second embodiment of the present invention.
In this embodiment, as the strip 60 of the fixing layer 6, a non-permeable material such as a synthetic resin tape such as polyethylene or vinyl is used, and the strip 60 is wrapped in the width direction. It is wound spirally with an appropriate gap for each turn so that it does not stick together. Since other configurations are the same as those of the first embodiment, the same reference numerals are given to the same parts and portions, and description thereof will be omitted.

The present invention is not limited to the above embodiment. That is, in some cases, the protective layer 2 on the outer periphery of the core 1 may be omitted, and the electric wire arrangement layer 3 may be provided directly on the outer periphery of the core 1. The number of wires 4 is not four, but three, five.
Any number, such as six or six. The linear members 5 do not necessarily have to be a two-piece set, but may be arranged one by one between the adjacent electric wires 4 and 4, or may be a three-piece set or more.

[0013]

Next, examples of the present invention will be described. 1) Using aramid fiber, braiding it into 2 × 8 (8 hits), diameter 15mm
With a heart. 2 x 2 polyester fibers around the outer periphery of this core
A protective layer (fourth layer) was formed by braiding in four strokes. The diameter at the time of forming this protective layer is 18 mm. Four wires each having a diameter of 4 mm are arranged at equal intervals on the outer periphery of the protective layer, and two urethane linear bodies each having a diameter of 5 mm when no load is applied are arranged and arranged two by two between the wires at a pitch of 135 mm. The wire was spirally wound to obtain an electric wire arrangement layer (third layer). The diameter at this stage is 28 mm. Then, a 70 mm wide polyester fiber band is wound around the outer periphery of the electric wire arrangement layer so that each turn wraps, to obtain a fixed layer (second layer) having a diameter of 28.5 mm. An outer layer (first layer) was obtained by braiding the polyester fiber into 2 × 24 hits. The thus obtained rope with a wire of the present invention has a diameter of 36 mm and a tensile strength of 18 mm.
It showed characteristics of tonf and elongation of 6%. 2) In order to compare the performance of this rope, aramid fiber was braided into 2 × 8 (8 hits), and four wires of 4 mm in diameter were put in the center of the braid, and the diameter was 17 m.
m, and a rope made by braiding polyester fibers to 2 × 24 perimeters around the circumference was made, having a diameter of 22 mm and a tensile strength of 18 mm.
A conventional rope with electric wire having tonf and elongation of 6% was obtained.

The test contents are as follows. A. Change in conductor resistance value due to repeated pulling This was done by gripping both ends of a 1.6 m sample length rope, repeating tension and unloading in the axial direction within a load range of 1 ton to 5 tonf, and watching the change in resistance value. Things. Table 1 shows the results. B. Change in conductor resistance value due to repeated bending in U-bend This is a sample with a sample length of 6.6 m and a sheave diameter of 1210 mm.
(D / d = 33.6) The sample was grasped at both ends through a sheave of (D / d = 33.6) and alternately pulled and unloaded alternately with a load of 2.2 tonf, and the change in resistance value was observed. Table 2 shows the results.

[0015]

[Table 1]

[0016]

[Table 2]

As is clear from Tables 1 and 2, the product of the present invention has no influence of tension up to about 60000 times in the test of A.
The resistance value has risen after 000 cycles. Also, in the test of B., the resistance value of the product of the present invention did not change even after 50 U bendings, but the resistance value of the conventional product increased remarkably after 10 U bendings. From these, a high strength and good electric wire function can be obtained by alternately winding the electric wire around the core as a strength base as in the present invention with a flexible linear body and fixing the arrangement with a fixing layer. You can see that.

[0018]

According to the first aspect of the present invention described above, a plurality of electric wires 4 are arranged on the outer periphery of a core 1 made of high-strength and high-modulus fibers, and a flexibility is provided between the electric wires 4 and 4. A linear body 5 having a wire is spirally wound around the outer periphery of the core 1, and a water-permeable fixing layer 6 for fixing the electric wire 4 and the linear body 5 is provided on the outer periphery thereof. Since the outer layer 7 made of synthetic fiber is provided on the outer periphery, the core 1 becomes a strong base and exhibits excellent high-strength performance. In addition, since the electric wire 4 is arranged around the core 1, external force is applied to the rope. In this case, the wires 4 are hardly affected by the stress in the direction of the center of the rope, and the load of the external force is reduced by the spacers of the wires 5 disposed between the wires. Moreover, since the fixing layer 6 for fixing the linear member 5 and the electric wire 4 has water permeability, water penetrates into the rope, and the electric wire 4 is hardly affected by the water pressure even when the water depth is deep. . For this reason, when used for mooring lines of buoys, an excellent effect is obtained in that the strength of the rope can be sufficiently utilized and the electric wire function can be maintained well.

According to the second aspect, since the core 1 has the protective layer 2 made of synthetic fiber on the outer periphery, and the electric wire 4 and the linear body 5 are wound around the core, the indentation on the core 1 is prevented. An excellent effect is obtained in which generation is prevented and the characteristics of the strong parent can be sufficiently exhibited. According to claim 3, the diameter is 10 to 3 times smaller than the diameter of the electric wire 4 when the linear body 5 is unloaded.
Since it is made thicker by about 0%, an excellent effect is obtained in that when an external force acts, the load itself is received and the load on the electric wire can be reduced appropriately. According to the fourth aspect, since the fixing layer 6 is formed by winding a strip such as a yarn, a tape, or a band cloth, the electric wire 4 and the linear body 5 can be firmly fixed, and the linear layer can be fixed. Since the body 5 is compressed and the wound state is tensed by the reaction force, an excellent effect that the body 5 is not loosened is obtained.

[Brief description of the drawings]

FIG. 1 is a side view showing a first embodiment of the present invention.

FIG. 2 is a cross-sectional view taken along line XX of FIG.

FIG. 3 is a perspective view showing a state of a step of winding an electric wire and a linear body according to the present invention.

FIG. 4 is a side view showing a second embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 core 2 protective layer (4th layer) 3 electric wire arrangement layer 4 electric wire 5 linear body 6 fixed layer 7 outer layer 60 strips

Claims (4)

[Claims] 1. A plurality of electric wires 4 are arranged around an outer periphery of a core 1 made of high-strength and high-modulus fibers, and a flexible linear body 5 is arranged between the electric wires 4. A spiral wound around the outer periphery of the core 1, a water-permeable fixing layer 6 for fixing the electric wire 4 and the linear body 5 is provided on the outer periphery, and an outer layer 7 made of synthetic fiber is provided on the outer periphery of the fixing layer 6. A fiber rope with an electric wire, characterized in that: 2. The electric wire according to claim 1, wherein the core has a protective layer made of synthetic fiber around the core, and an electric wire and a wire are arranged around the outer periphery of the protective layer, and the core is wound spirally. Containing fiber rope. 3. When the wire 5 is in a no-load state, the wire 5
The wire-containing fiber rope according to claim 1 or 2, having a diameter or a cross-sectional area that is about 0 to 30% thicker. 4. The fiber rope with an electric wire according to claim 1, wherein the fixing layer 6 is formed by winding a strip 60 such as a yarn, a tape or a band cloth.