JPH09225806A - Sawing wire rope - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance anti-deformation and wear resistance characteristics, etc., to improve fatigue resistance and durability, etc., by increasing the stranding length of strands through a proper reduction of the strand pitch multiple of outer layer strand. SOLUTION: An outer layer strand 3 or 13 or 23 is formed in the range of strand pitch multiple Ns 4.5-6.5 and the strand is stranded with an inner layer rope 2 or 12 or 22 in the range of rope pitch multiple Nr 6-7. In the so- prepared sawing wire rope, the inner layer rope 2 or 12 or 22 and the outer layer strand 3 or 13 or 23 of multilayered stranded wire rope are formed respectively by stranding a zinc plated strand or brass plated strand therewith, or a multilayered stranded wire rope 1 or 11 or 21 is at least covered with a rubber or synthetic resin spacer being interposed in an annular cutter.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sewing wire rope for cutting various reinforced concrete structures, stone materials and the like with a large number of tubular cutters fitted with a multi-layer twisted wire rope at intervals.

[0002]

2. Description of the Related Art Recently, for various reinforced concrete structures, stone materials, etc., a sewing wire rope, in which a large number of annular cutters are fitted to the wire rope at intervals, is moved at high speed in a wound state and sprinkled with water to cool it. It has been cut efficiently. In addition, as shown in FIG. 5A, the wire rope of this sewing wire rope includes a wire rope R1 having a (7 × 7) structure in which a similar outer layer strand b1 is twisted with a strand a1 having a (1 + 6) structure, and FIG. As shown in Fig. 3, a wire rope R2 having a (7 × 19) structure in which the same outer layer strand b2 is twisted is applied to the strand a2 having a (1 + 6 + 12) structure, but the wire rope has a small number of strands. Due to problems such as large diameter and poor flexibility, damage to outer layer strands and easy cutting,
Recently, as shown in FIG. 5C, the inner layer rope a of the (7 × 7) structure formed by twisting the strands of the (1 + 6) structure
3, the outer layer strand b3 of S (seal type) [1 + 9 + 9] structure is twisted together and has a 7 × 7 + 6 × S (19) structure (strand pitch multiple is about 7 to 8 and rope pitch multiple is about 6 to 7), and high. The application of a multi-layer stranded wire rope R3 or the like, which has high strength and appropriate flexibility, and has improved bending resistance, abrasion resistance, etc., is being studied.

[0003]

Among conventional sewing wire ropes, the multi-layer stranded wire rope shown in FIG. 5C has the above-mentioned characteristics, but it is subjected to severe cutting conditions such as bending under high load, heat and humidity. When used in
There is a problem that the annular cutter may be cut before its life due to corrosion or the like.

The present invention was developed in order to solve the above-mentioned problems, and the object of the present invention is to appropriately reduce the strand pitch multiple of the outer layer strand and twist the strands thereof. To provide a sewing wire rope with increased length and increased resistance to shape deformation and wear resistance by forming or covering with bare wire to improve fatigue resistance and durability. is there.

[0005]

SUMMARY OF THE INVENTION According to the present invention, a large number of annular cutters are fitted at intervals on a multi-layer twisted wire rope obtained by twisting a plurality of outer layer strands on an inner layer rope formed by twisting a plurality of strands. In the sewing wire rope, the outer layer strand is formed within a range of a strand pitch multiple of 4.5 to 6.5, and the outer layer strand is twisted with the inner layer rope within a range of a rope pitch multiple of 6 to 7. As a result, the twisting length of the strands of the outer layer strand is appropriately increased, and the shape-deformation resistance and abrasion resistance are improved to improve fatigue resistance and durability.

In the above-mentioned sewing wire rope, the inner layer rope and the outer layer strand of the multi-layer twisted wire rope are formed by twisting galvanized element wires or brass element wires, respectively, or alternatively, the multi-layer element The twisted wire rope is coated with a spacer made of synthetic resin or rubber interposed at least between the annular cutters to further improve corrosion resistance, abrasion resistance, shape-degrading performance, etc., and overall fatigue resistance and durability. It further enhances sex.

[0007]

1A shows a first embodiment of a multi-layer stranded wire rope for a sewing wire rope according to the present invention, FIG.
B, the second embodiment, FIG. 1C, the third embodiment, and FIG. 1D.
Fig. 4 is a side view structure for double-layer twisted wire ropes, Fig. 2 is an example of a sewing wire rope to which the double-layer twisted wire ropes of the respective examples are applied, Fig. 3 is a usage mode of the sawing wire rope, Fig. 4 Figure 2 shows the durability test mechanism for multi-layer stranded wire rope. In the figure, 1, 11 and 21 are multi-layer twisted wire ropes of each example, 2 and 3 are inner layer ropes and outer layer strands of the first example, 5 is an annular cutter, 6 is a spacer, 7 is a whole coating film, 12 and 13 are inner layer ropes and outer layer strands of the second embodiment, 22 and 23 are inner layer ropes and outer layer strands of the third embodiment, 30 is a sewing wire rope of each example, Sd is the strand diameter of the outer layer strands, and Sp is The strand pitch, Rd is the rope diameter, R
p is a rope pitch.

The embodiment shown in FIG. 1 is a multi-layer twisted wire rope 1 or 11, in which a plurality of outer layer strands 3 or 13, 23 are twisted with an inner layer rope 2 or 12, 22 in which a plurality of strands are twisted together. 21 is a sewing wire rope 30 in which a large number of annular cutters 5 are fitted at intervals.
In the above, in the outer layer strands 3 or 13, 23, the strand pitch multiple Ns (Sp / Sd) 4.5 to 6.5 is used.
Within the range of the outer layer strand 3 or 13,
The sewing wire rope 30 is characterized in that 23 is twisted within the range of rope pitch multiple Nr (Rp / Rd) 6 to 7.

The above-mentioned sewing wire rope 30
In, the multi-layer twisted wire rope 1 or 11, 21
The inner layer ropes 2 or 12, 22 and the outer layer strands 3, 13 or 23 of the above are sewing wire ropes characterized by being formed by twisting galvanized element wires or brass element wires.

Furthermore, in the above-mentioned sewing wire rope 30, the multi-layer stranded wire rope 1 or 1
1, 21 are sawing wire ropes characterized by being covered with a spacer 6 made of synthetic resin or rubber interposed at least between the annular cutters 5.

More specifically, in the multi-layer twisted wire rope 1 (see FIGS. 1A and 1D) of the first embodiment, preferably zinc-plated or brass-plated wires are twisted (1 + 6).
Inner layer rope 2 of (7 × 7) structure formed of inner layer strands (7 pieces) of structure and strands of preferably zinc-plated or brass-plated S (seal type) [1 + 9 +
9] The outer layer strands 3 (six) having the structure are used. Each outer layer strand 3 has a strand pitch multiple Ns (strand pitch Sp / strand diameter Sd) of about 4.5 to 6.
It is formed within the range of 5 and the inner layer rope 2 is twisted with a rope pitch multiple Nr (rope pitch Rp / rope diameter Rd) within a range of about 6 to 7 to form a multilayer twist of 7 × 7 + 6 × S (19) structure. I'm running.

The multi-layer twisted wire rope 11 of the second embodiment (see FIGS. 1B and 1D) is also formed of strands of preferably zinc-plated or brass-plated strands (7 × 7). WS in which the inner layer rope 12 of the structure is twisted with a wire preferably zinc plated or brass plated
(Wallington seal type) [1 + 5 + (5 + 5) +1
0] structure outer layer strands 13 (six), and each outer layer strand 13 has a strand pitch multiple N.
s (Sp / Sd) is formed within a range of about 4.5 to 6.5, and the rope pitch multiple Nr (Rp / R
d) is twisted within the range of about 6 to 7 and 7 × 7 + 6 × W
It is a multi-layered twist of S (26) structure.

The multi-layer twisted wire rope 21 of the third embodiment (see FIGS. 1C and 1D) is also a strand 22 formed by twisting strands of zinc-plated or brass-plated wire.
The inner layer rope 22 having the (7 × 7) structure formed in (4) is preferably twisted with the zinc-plated or brass-plated element wire F
i (filler type) [1+ (6 + 6) +12] structured outer-layer strands 23 (six), and each outer-layer strand 23 has a strand pitch multiple Ns (Sp / S).
d) is formed within the range of about 4.5 to 6.5, and the rope pitch multiple Nr (Rp / Rd) is set to about 6 to 7 on the inner layer rope 22.
And twisted within the range to form a 7 × 7 + Fi (25) multi-layered twist.

Further, as the annular cutter 5, preferably, an annular body having a structure obtained by sintering steel iron + diamond + powder, or an annular body obtained by sintering superalloy is applied. The twisted wire rope 1 or 11, 21 is fitted with a required gap. In addition, spacer 6
Is made of various synthetic resins and rubber, and the annular cutter 5
The above-mentioned multi-layer stranded wire rope is coated between them.

The sewing wire rope 30 of the embodiment is
As shown in FIG. 2, a multiplicity of annular cutters 5 and spacers 6 are provided on each of the multi-layer twisted wire ropes 1 or 11 and 21.
Alternately, the annular cutter 5 is fitted by means such as caulking.
Are fixed to each other and are fitted at predetermined intervals, and the multi-layer stranded wire ropes 1 or 11 and 21 are covered with at least a spacer 6, and further, a coating film 7 is applied to the entire circumference as necessary. It

The above-mentioned sewing wire rope 30
For example, as shown in FIG. 3, the drive wheel 31 and the idler pulleys 32, 3 are formed in an annular shape by a connecting tool 34 or the like.
3 over, various reinforced concrete structures and stones 5
It is arranged around 0 as shown in the drawing, and the sewing wire rope 30 is driven at high speed as indicated by arrow X, and when it is moved by moving in the direction Y indicated by arrow, water is sprinkled and cooled at any time,
A large number of annular cutters 5 arranged at appropriate intervals are used to continuously and continuously cut the periphery of the reinforced concrete structure and the stone material 50 over a wide range. Compared with the conventional cutter blade, it is possible to efficiently cut a large object to be cut. In addition to the illustrated example, various cutting modes such as reciprocating the sawing wire rope 30 at high speed and disposing the sawing wire rope 30 outside the reinforced concrete structure or the stone material 50 are possible.

7 × 7 + 6 × of the cross section shown in FIGS. 1A, 1B, 1C.
S (19) structure, 7 × 7 + 6 × WS (26) structure, 7 ×
Using 7 + 6 × Fi (25) structure, each multi-layer stranded wire rope is manufactured by using galvanized strands and manufacturing many outer layer strands with different strand pitch multiples Ns and twisting the outer layer strands with rope pitch multiple Nr6.5. In addition, a multi-layer stranded wire rope 30 having a rope diameter of 5.0 mm and an outer diameter of 7 mm formed with a rubber coating was manufactured, and a durability test was carried out using these as samples for evaluation.

[0018]

[Table 1]

In the above-mentioned durability test, as shown in FIG. 4, a large number of multi-layer twisted wire ropes 30 are connected to the guide pulley 37 of the testing machine.
And test pulleys 36, 38 (diameter 50 mm),
A rope tension of 100 kgf was applied to the weight W, and the rope was reciprocated as indicated by arrow Z. Table 1 shows representative examples of the above-mentioned multi-layer twisted wire rope as a conventional example, a comparative example and an example, and shows these test results as an index.

As is clear from the display, Examples 1 to 5 are
It was confirmed that the strand pitch multiple Ns was formed in the range of about 4.5 to 6.5, and the number of durability was significantly increased as compared with the conventional example and the comparative example. In addition, a multi-layer twisted wire rope of each of the above samples was fitted with a large number of annular cutters and spacers to form a sewing wire rope, and as a result of actual cutting test, it was confirmed that similar durability evaluation was obtained. ing.

Incidentally, in Examples 1 to 5, the strand pitch multiples Ns7 to 8 of the outer layer strand of the conventional example are formed in a small number within the range of about 4.5 to 6.5. Although the cutting load is reduced by a few percent as shown, the multi-layer twisted wire load with the structure shown in Fig. 1 is basically a high-strength structure even when applied as a sewing wire rope. The reduction of the cutting load to this extent can be easily compensated by a slight increase in the wire diameter, that is, the rope diameter, if necessary, and the basic required strength as a sewing wire rope is sufficiently secured.

In each of the above-mentioned multi-layer twisted wire ropes, when the strand pitch multiple is less than 4.5, the strength due to twisting decreases, and when it exceeds 6.5, the durability decreases and the rope diameter Rd is If it is less than 3 mm, the required strength cannot be secured, and if it exceeds 8 mm, the equipment becomes excessively large. Therefore, the multi-layer twisted wire rope 30 for sewing wire rope has a rope diameter Rd within the range of 3 to 8 mm. It is preferable that the outer layer strand is formed with a strand pitch multiple within a range of about 4.5 to 6.5, and the outer layer strand is twisted in the same direction with the inner layer rope at a rope pitch multiple of about 6 to 7. It has been confirmed that the above-described excellent fatigue resistance and durability can be obtained by adopting the combined structure.

The illustrated example shows a typical example of a multi-layer twisted wire rope, and the present invention is also applicable to various multi-layer twisted wire ropes having similar structures and characteristics.

[0024]

As described above, according to the present invention, a large number of annular cutters are fitted at intervals on a multi-layer twisted wire rope obtained by twisting a plurality of outer layer strands on an inner layer rope formed by twisting a plurality of strands as described above. In the sawing wire rope, the outer layer strand is multiplied by the strand pitch multiple.
It is formed within a range of about 5 to 6.5, and the outer layer strand is twisted with the inner layer rope within a range of a rope pitch multiple of about 6 to 7, so that the twisted length of the strand is moderate. In addition, fatigue resistance, durability, etc. have been significantly improved by reducing the deformation, wear, disconnection, etc.

Further, in the above sewing wire rope, the inner layer rope and the outer layer strand of the multi-layer twisted wire rope are formed by twisting galvanized element wires or brass plated element wires, respectively, or alternatively, the multi-layer twisted wire By covering the rope with a spacer made of synthetic resin or rubber interposed at least between the annular cutters, corrosion, wear and deformation are further reduced, and overall fatigue resistance, durability, etc. are further enhanced. ing.

[Brief description of drawings]

FIG. 1 is a cross sectional view (A) of a first embodiment showing a multi-layer twisted wire rope of the present invention and a cross sectional view (B) of a second embodiment thereof.
And a cross-sectional view (C) showing the third embodiment and a side view mechanism diagram (D) which is also used for each embodiment.

FIG. 2 is a side view mechanism diagram showing an embodiment of the sewing wire rope of the present invention.

FIG. 3 is a diagram of a cutting mechanism using the sewing wire rope of the present invention.

[Figure 4] Endurance test mechanism diagram of each multi-layer stranded wire rope

5A to 5C are cross-sectional views (A), (B) and (C) showing conventional examples of a wire rope for sewing.

[Explanation of symbols]

 1,11,21 Multi-layer stranded wire rope 2,12,22 Inner layer rope 3,13,23 Outer layer strand 5 Annular cutter 6 Spacer Ns Strand pitch multiple Nr Rope pitch multiple

Claims (3)

[Claims] 1. A sewing wire rope in which a large number of annular cutters are fitted at intervals in a multi-layer twisted wire rope in which a plurality of outer layer strands are twisted into an inner layer rope in which a plurality of strands are twisted together. A sewing wire, characterized in that the outer layer strand is formed within a range of a strand pitch multiple of 4.5 to 6.5, and the outer layer strand is twisted with an inner layer rope within a range of a rope pitch multiple of 6 to 7. rope. 2. The sewing wire rope according to claim 1, wherein the inner layer rope and the outer layer strand of the multi-layer twisted wire rope are formed by twisting galvanized element wires or brass element wires, respectively. Sewing wire rope. 3. The sewing wire rope according to claim 1 or 2, wherein the multi-layer twisted wire rope is covered with a spacer made of synthetic resin, rubber or the like interposed at least between the annular cutters. A characteristic sewing wire rope.