JP2978101B2 - Wire rope and rope reinforced composite for highly flexible reinforcement - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a highly flexible reinforcing wire rope suitable for embedding and reinforcing as a reinforcing material in a communication cable, a belt conveyor or the like, and a rope reinforcing composite thereof.

[0002]

2. Description of the Related Art A conventional example will be described using a communication cable. For example, signal lines and electric wires connected to an elevator that repeats ascending and descending with a wire rope or the like are repeatedly bent and deformed, and lubricating oil, dust and the like adhere thereto. Therefore, for example, a reinforcing wire rope having a 7 × 7 structure or a 7 × 19 structure together with a plurality of communication lines and electric wires is directed in a bending deformation direction and buried in a chlorine-based vinyl resin at an interval from each other. , And is reinforced with a synthetic resin. Also, in a belt conveyor or the like where bending deformation is repeated, a similar reinforcing wire rope is buried and reinforced by being directed in the bending deformation direction in rubber.

[0003]

A conventional reinforcing wire rope buried in a communication cable, a belt conveyor, or the like,
It has high rigidity and poor followability with respect to bending deformation, and there is a problem in bending deformation performance, durability, and the like. For example, repeated bending deformation may cause separation from synthetic resin or rubber.

The present invention has been developed in order to solve the above-mentioned problems. The object of the present invention is to make the side strand appropriately small in diameter with respect to the core strand, mold the strand, and twist the core strand. Highly flexible wire rope and rope reinforced composite with high flexibility wire rope with low rope elongation and gap between strands to improve reinforcement, reliability, bending deformation performance and durability In providing the body.

[0005]

In order to achieve the object of the present invention, repeatedly bay
In the rope-reinforced composite that is bent, fingers
In the reinforcing wire rope buried in the direction, a plurality of side strands formed in a small diameter with respect to the core strand are molded, and the side strands are twisted to the core strand to form a gap between the strands, thereby increasing the height. A flexible wire rope, and the diameter of the core strand is D
1 and the diameter of each side strand is D2, the diameter ratio r = D1 / D2 between the core strand and the side strand is 1.08.
１．１1.10 or alternatively the side strand preform height is h and the wire rope diameter is RD
Then, the preform degree of the side strand η = h / RD
To a highly flexible reinforcing wire rope configured in the range of 80 to 85, to ensure a moderately high rope elongation with the core strand on the relatively large diameter side and to form a highly flexible structure by forming an appropriate gap, Bending deformation performance is enhanced with reinforcement performance and reliability.

In the above-described highly flexible reinforcing wire rope, if the arc length in the curved deformation of the wire rope is Lo and the chord length is L1, the rope flexibility ψ =
The L1 × 100 / Lo constitutes 15 to 35% of the
A rope embedded with the wire rope oriented in the bending direction
The rope-reinforced composite is a reinforced composite that enhances the ability to follow the curved deformation and enhances the bending deformation performance and durability of the rope-reinforced composite.

[0007]

1A and 1B show an embodiment of a rope reinforcing composite according to the present invention, FIGS. 1C and 1D show an embodiment of a highly flexible reinforcing wire rope according to the present invention, and FIG. FIG. 3 shows a method of manufacturing a reinforcing wire rope, and FIG. 3 shows a method of measuring the rope flexibility. In the figure, a is an elevator that is lifted and lowered by a wire rope b and the like, and 1 is a rope reinforcement that is repeatedly bent and deformed.
Composite or communication cable or belt conveyor , 3 embedded communication wire or electric wire 2 and wire rope for high flexibility reinforcement
Synthetic resin or rubber for rope reinforced composite (communication cable or belt conveyor) , 10 for wire rope or high flexibility
Strong wire rope , 11 is a core strand formed by twisting a plurality of strands 11a, 12 is a plurality of strands 12
a is a side strand formed by twisting a, r is the diameter ratio of the core strand and the side strand, η is the preform degree of the side strand, ψ is the rope flexibility, 15 is the strand supply device, 16 is the preformer, 17 Is a twisted portion, and 18 is a post preformer.

[0008] The first embodiment of the present invention repeats the curve change.
Direction in the direction of bending deformation in the formed rope reinforcement composite 1
In the reinforcing wire rope to be buried, a plurality of side strands 12 formed with a small diameter D2 are formed on the core strand 11 so that the side strands are formed on the core strand 11 .
The strands 12 are twisted to form a gap α between the strands to form a highly flexible wire rope 10 configured as a highly flexible wire rope 10.

In the second embodiment, the diameter of the core strand 11 is D in the high-flexibility reinforcing wire rope.
1 and the diameter of each side strand is D2, the diameter ratio r = D1 / D2 between the core strand 11 and the side strand 12 is in the range of 1.08 to 1.10. Wire rope.

Alternatively, in the third embodiment, the preform height of the side strand 12 and the diameter of the wire rope 10 may be set to R and R, respectively.
Assuming that D (D1 + 2 × D2), the preform degree η = h / RD of the side strands 12 is in the range of 80 to 85, thereby providing a highly flexible reinforcing wire rope.

Further, in the fourth embodiment, in the above-mentioned high-flexibility reinforcing wire rope, if the arc length in the curved deformation of the wire rope 10 is Lo and the chord length is L1, the rope flexibility ψ = L1 × 100 / Lo within the range of 15 to 35% , and the above-described wire
The rope is oriented in the direction of the curve deformation to form a reinforced rope embedded composite.

The illustrated example will be described in more detail.
As shown in C and D, the core strand 11 has a 1 × 7 structure having a diameter D1 of seven twisted element wires (steel wires) such as a stainless steel wire, a plated steel wire, and a bare steel wire. The side strand 12 is a 1 × 7 having a diameter D2 obtained by twisting seven strands (steel wires) such as a stainless steel wire, a plated steel wire, and a bare steel wire.
It has a structure. Also, the diameter D1 of the core strand 11
The diameter D2 of the side strand 12 is relatively small
Specifically, the diameter ratio r = D1 / D2 between the core strand 11 and the side strand 12 is set to 1.08 to 1.1.
It is configured in the range of 0.

Further, the illustrated highly flexible reinforcing wire rope is formed by molding a side strand 12 having a small diameter D2 with respect to the core strand 11 so that seven strands are stranded around the core strand 11 and a gap is formed between the strands. is formed into a highly flexible wire rope 10 to form a 7 × 7 structure.

The above-mentioned high-flexibility reinforcing wire rope is attached to the above-mentioned core strand 11 (1 × 7 structure having a diameter D1) by, for example, a twisting machine as shown in FIG.
2 (1 × 7 structure of diameter D2).
That is, the core strand 11 and each side strand 12 are fed out from the strand supply device 15, and each side strand 1
2 is formed by a preformer 16 and is appropriately preformed, and then twisted around a core strand 11 at a twisting portion 17 to form a 7 × 7 wire rope.
In addition, this wire rope is
At 8, the wire rope 10 is manufactured as a highly flexible wire rope 10 which is slightly reversely rotated in the twisting direction and is appropriately untwisted.

Further, in the above-mentioned highly flexible reinforcing wire rope, the diameter ratio r = D1 / D2 of at least the diameter D1 of the core strand 11 and the diameter D2 of the side strand 12, and the preform degree η = h / RD (preform height: h, diameter of wire rope: RD = D1
+ 2 × D2) to produce a large number of wire rope samples, and as shown in FIG. 3, each sample (a wire rope having a length Lom set by the rope diameter) has both ends on a smooth PVC plate. It is bent into a circular shape 10a and released, and naturally returns to the arc shape 110b or 10c and is deformed, and the chord length L1 (distance between the ends of the sample) and the arc length Lo (length of the sample) of the arc shape are determined. As a result of various measurements and experiments such as measuring the rope flexibility as the ratio and measuring the rope flexibility ψ = L1 × 100 / Lo, at least the diameter ratio r = D1 / D2 is in the range of 1.08 to 1.10. , And the preform degree η = h
/ RD is in the range of 80 to 85, and the rope flexibility ψ = L1
It was confirmed that by configuring x100 / Lo in the range of 15 to 35%, the bending deformation performance of the wire rope was significantly improved as compared with the conventional rope flexibility (about 50%).

If the rope flexibility ψ is less than 15, the twisting of the wire rope will cause twisting, which will tend to cause variations in curve deformation and the like. If the rope flexibility ψ exceeds 35, signal cables and belt conveyors (For example, a curved diameter 400 corresponding to the chord length L1)
(５００500 mmφ) cannot be secured.

Further, assuming that the rope twist pitch (twist pitch of the side strand) is P in relation to the diameter ratio r of the core strand and the side strand 12, P / RD is 5
９9 times, more preferably 6８8 times, and further in relation to the preform degree η,
If the rope diameter of the preform is PD, PD x 1
It is preferable to set the value in the range of 00 / RD = 80 to 150%, and an appropriate gap α is formed between the strands to further enhance the accuracy of the rope flexibility. In addition, the proper twisting and reshaping by the post homer 18 effectively reduces the residual torque of each of the strands 11 and 12, achieves even more excellent twisting accuracy, and prevents the rope twisting phenomenon and the like.

As shown in FIGS. 1A and 1B, the wire rope 10 has a bending direction (in the example shown in the drawing, a cable) inside a synthetic resin (such as chlorine-based vinyl resin) 3 or rubber in a communication cable 1 or a belt conveyor. (Length direction) and embedded as a reinforcing material to form a rope reinforced composite. Preferably, as shown in FIG. 1B, Z- and S-twisted wire ropes 10 having different twisting directions are buried in parallel with communication lines and electric wires 2 at appropriate intervals to prevent cable twisting together with reinforcement. Composed of a communication cable 1 and the like (rope reinforced composite) integrally embedded in a synthetic resin. For example, as shown in FIG. 1A, this communication cable 1 is connected to an elevator a and applied, and even if the bending deformation W of the communication cable on the elevator side is repeated with the elevation, the wire rope 1
With excellent flexibility of 0, the ability to follow the curve deformation is remarkably enhanced, and excellent curve deformation performance and reliability are obtained.

In the above-described high-strength reinforcing wire rope, the core strand 11 has a moderately large diameter D1 relative to the side strands 12, ensuring a moderately low rope elongation and effectively functioning as a reinforcing material. In addition to effectively preventing elongation, that is, cutting, of the signal line or electric wire 2, excellent reinforcement performance is exhibited, and each side strand 12 is configured to have a moderately small diameter D 2 with respect to the core strand 11, and A suitable gap α is formed between the strands in a configuration in which the strands 12 are appropriately molded and twisted to the core strands 11, so that friction between the core strands and the side strands and between the side strands is effectively reduced. , Wire rope 1
The curve deformation performance of No. 0 is remarkably enhanced. Also, at least the diameter ratio r of the core strand 11 and the side strand 12
= D1 / D2 in the range of 1.08 to 1.10, or alternatively, the preform degree of the side strand η = h / RD is 80
８５ = 85, rope flexibility ψ = L1 × 100 / L
By configuring o in the range of 15 to 35%, no particular variation occurs in the wire rope 10 even when the bending deformation is repeated, and the followability to the bending deformation W required by the communication cable 1 and the belt conveyor is improved. The bending deformation performance and reliability are improved, for example, significantly improved.

Therefore, when the above-mentioned wire rope 10 is formed into a rope reinforcing composite which is buried in the communication cable 1 or a belt conveyor or the like in the direction of bending deformation, the reinforcing composite is effectively reinforced and The required bending deformation performance corresponding to the reinforced composite is obtained.Even if the bending deformation is repeated, it is buried integrally in synthetic resin or rubber, and there is no damage due to special twisting phenomenon. High durability and excellent durability.

The highly flexible reinforcing wire rope shown in FIG.
Although the present invention has a × 7 structure, the present invention further provides a 7 × 19 structure in which a plurality of side strands are similarly twisted as outer strands around the side strand group, or a configuration in which the number of side strands is changed. It is also possible to obtain basically the same operation and effect. Although mainly described as a reinforcing material for a communication cable, it is embedded as a reinforcing material for a conveyor belt or the like whose bending deformation is repeated, and is effectively used widely as a variety of rope reinforcing composites.

[0022]

According to the present invention, the bending is repeated as described above.
Deformed rope reinforced composites (communication cables and belt cables)
Embedded in the direction of curvature deformation
In the reinforcing wire rope, a plurality of side strands formed in a small diameter with respect to the core strand are molded, and the side strands are twisted to the core strand to form a gap between the strands, thereby forming a highly flexible wire rope. When the diameter of the core strand is D1 and the diameter of each side strand is D2, the diameter ratio of the core strand to the side strand is D1. r = D1 / D2 is 1.08 to 1.10
Alternatively, assuming that the preform height of the side strand is h and the diameter of the wire rope is RD, the preform degree η = h / RD of the side strand is 80.
To 85, a moderately low rope elongation is secured by increasing the diameter of the core strand relative to the side strand, and a highly flexible structure is formed by forming a gap. In addition, the bending deformation performance as well as the reinforcement performance and reliability are remarkably improved, for example, damage due to the twisting phenomenon is prevented.

Further, in the above-mentioned highly flexible reinforcing wire rope, if the arc length in curve deformation of the wire rope is Lo and the chord length is L1, the rope flexibility ψ = L
Constructing 1 × 100 / Lo to 15-35%, curved shape
Rope reinforced composite (communication cable)
As a result , the wire rope is effectively prevented from being damaged or the like, and is integrally buried in a synthetic resin or rubber to improve the bending deformation performance and durability of the rope reinforced composite.

[Brief description of the drawings]

FIG. 1 is a perspective view (A) showing one mode of use of a rope-reinforced composite of the present invention, an enlarged perspective view (B) thereof, and a cross-sectional view (C) showing an embodiment of a highly flexible reinforcing wire rope; Side view of the side strand (D)

FIG. 2 is a side view mechanism diagram showing an apparatus for manufacturing a highly flexible reinforcing wire rope.

FIG. 3 is a stage diagram of a curve deformation showing one method of measuring the rope flexibility.

[Explanation of symbols]

1 rope reinforcement composite (communication cable, belt con
Bear) 10 wire rope 11 core strand 12 side strand α gap (gap between strands) D1 core strand diameter D2 side strand diameter r diameter ratio h preform height (side strand) RD wire rope diameter η preform degree (Side strand) Lo Arc length of curved deformation L1 Chord length of curved deformation ψ Rope flexibility

Claims (4)

(57) [Claims] 1. A rope reinforcing member repeatedly bent and deformed.
In a reinforcing wire rope that is embedded in the joint in a direction of bending deformation, a plurality of side strands formed to have a small diameter with respect to the core strand are molded, and the side strand is twisted to the core strand to form a strand. A highly flexible wire rope for reinforcement, characterized in that a gap is formed between them to form a highly flexible wire rope. 2. The wire rope for high flexibility reinforcement according to claim 1, wherein the diameter of the core strand is D1 and the diameter of the side strand is D2, and the diameter ratio of the core strand to the side strand is r = D1 / 1. D2 is 1.08 to 1.10
A highly flexible wire rope for reinforcement characterized by having been configured in the range of. 3. The preform degree of the side strand, wherein the height of the preform of the side strand is h and the diameter of the wire rope is RD. η = h / RD is 80
A highly flexible wire rope for reinforcement, characterized in that the wire rope is configured in the range of -85. 4. The high-flexibility reinforcing wire rope according to claim 1, 2 or 3, wherein the arc length in the bending deformation of the wire rope is Lo and the chord length is L1.
Then, the rope flexibility ψ = L1 × 100 / Lo becomes 15
35. A rope reinforced composite, wherein the wire rope is embedded in the rope reinforced composite so as to be oriented in a bending deformation direction.