WO2017166417A1

WO2017166417A1 - Steel wire rope for air-impermeable rubber belt

Info

Publication number: WO2017166417A1
Application number: PCT/CN2016/084001
Authority: WO
Inventors: 张春雷; 刘红芳; 陆毅; 赵国瑞
Original assignee: 法尔胜泓昇集团有限公司
Priority date: 2016-04-01
Filing date: 2016-05-31
Publication date: 2017-10-05
Also published as: CN105625067A

Abstract

A steel wire rope for an air-impermeable rubber belt, comprising a core strand (1) and several outer strands (2), the several outer strands (2) wrapping around the outside of the core strand (1); the core strand (1) is a linear strand; the core strand (1) is either a cross lay strand or a parallel lay strand; the outer strands (2) each consists of an outer strand core yarn (2.1), an outer strand intermediate yarn layer (2.2) and an outer strand outer yarn layer (2.3), which are arranged from inside to outside; the outer strand outer yarn layer (2.3) consists of outer strand outer yarn layer heavy wires (2.3.1) and outer strand outer yarn layer small-gauge wires (2.3.2), the outer strand outer yarn layer heavy wires (2.3.1) and the outer strand outer yarn layer small-gauge wires (2.3.2) being arranged alternately so as to wrap around the outer side of the outer strand intermediate yarn layer (2.2); and the outer strand outer yarn layer heavy wires (2.3.1) and/or each steel wire of the outer strand intermediate yarn layer (2.2) are bent steel wires having a wavy shape in a plane. The steel wire rope has the advantage of achieving sufficient combination of the rubber belt steel wire rope and rubber, thereby guaranteeing the air impermeableness of the rubber belt.

Description

Airtight tape wire rope

Technical field

The present invention relates to a tape wire rope, and more particularly to a gas-tight tape wire rope.

Background technique

With the massive construction of domestic mines and terminals, high-efficiency, energy-saving and pollution-free conveyor belt transportation has replaced the original short-distance automobile transportation. The key components of this type of transportation and the main equipment consumables are conveyor belts, in which the steel cord conveyor belt is reinforced with steel wire ropes, and its carrying capacity is greatly improved, so that it can be used for high speed, large traffic volume and long distance transportation belts. At present, the steel cord conveyor belt is widely used at home and abroad.

The wire rope tape has the characteristics of large tensile strength, small elongation, good groove formation, good flexural resistance, large conveying capacity and long service life. With the open application of the wire rope structure, the rubber can fully penetrate into the wire rope structure. Between the strands, the bond strength between the rubber and the steel wire is increased, the corrosion resistance of the steel wire rope is improved, the shearing between the strands and the twisting of the strands are alleviated, and the dynamic fatigue life of the tape is further improved.

With the light weight development of the tape products, it is hoped that the wire rope as the core support has a higher breaking force, and the diameter can be reduced, and the weight of the wire rope is reduced, thereby achieving the weight reduction of the tape product. Therefore, in the design of the wire rope structure, some of the original point contact structures can be improved to the line contact structure. Compared with the point-diameter wire rope of the same diameter specification, the wire contact wire rope has a high metal density coefficient, that is, the metal cross-sectional area increases, correspondingly The breaking tension is improved, but due to the high filling factor of the wire contact wire strand, the permeability of the rubber is not very good, and it can not completely penetrate all the steel wires inside the wire rope. The pressure loss of the tape is detected, that is, the rubber does not penetrate sufficiently, but the steel wire rope is affected. The actual supporting role is not a good substitute for point contact products.

Summary of the invention

In view of the above disadvantages, an object of the present invention is to develop a tape wire rope capable of sufficiently penetrating rubber, that is, a gas-tight tape steel wire rope.

The technical content of the present invention is a gas-impermeable tape steel cord comprising a core strand and a plurality of outer strands, a plurality of outer strands covering the outer side of the core strand; the core strand being a linear strand; the core strand being a point contact Shares or strand contact shares;

Characterized in that the outer layer consists of an outer core strand, an outer strand intermediate layer and an outer strand outer layer from the inside out;

The outer outer layer of the outer strand consists of a thick outer steel wire of outer outer layer and a thin steel wire of outer outer layer of silk. The outer outer layer of thick outer steel wire and the outer outer layer of thin outer steel wire are interlaced and coated on the outer layer. Outside the middle layer of the strand;

Each of the outer strands of the outer wire layer or the outer wire of the outer layer of the outer layer is a flat wavy bent wire.

In the above gas-impermeable tape steel wire rope, the core strand is a linear strand, and all or part of the outermost steel wire The split wire is a flat wave-shaped bent wire, or all or part of the outer wire and the secondary wire are flat wave-shaped bent steel wires.

In the above gas-impermeable tape steel wire rope, when the core strand is a point contact strand, the structure may be 1*19, 3+9, 1*7 or 7*7, and the number of steel wires is 7 to 49; the core strand is a line contact. In the case of strands, the structure may be 1*9W, 1*12W, 1*19S, 1*19W, 1*26SW, and the number of steel wires is 9-26.

In the above-mentioned gas-impermeable tape steel wire, the wavelength of the flat wave-shaped bent steel wire is 3 to 8 times its diameter, and the wave height is 0.05 to 1.0 times its diameter.

The flat wave-shaped bent steel wire in the above gas-impermeable tape steel wire is obtained by rolling a single steel wire through a pair of self-made toothed wheels.

The gas-impermeable tape steel wire of the invention improves the permeability of the rubber from the lateral direction of the steel wire, and improves the gas permeability of the wire-contact steel wire rope as a rubber skeleton, and the planar wave-shaped bent steel wire has a view from the longitudinal direction of the steel wire rope. A certain amount of elongation is stored in the wire rope. In the detection of the breaking force of the wire rope, the elongation of the storage can provide axial stretching, which offsets the strength loss caused by the bending of the steel wire, so that the breaking force of the wire rope is not The decline has improved.

DRAWINGS

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a schematic view of a planar wavy bent wire in the present invention.

Figure 2 is a left side view of Figure 1.

Figure 3 is a schematic illustration of one embodiment of the invention.

Figure 4 is a schematic illustration of another embodiment of the invention.

Figure 5 is a schematic illustration of still another embodiment of the present invention.

Figure 6 is a schematic illustration of still another embodiment of the present invention.

detailed description

As shown in Fig. 1 and Fig. 2, in the present invention, the wavelength undulating bending steel wire has a wavelength L of 3 to 8 times its diameter d, and the wave height h is 0.05 to 1.0 times its diameter d.

Example 1, as shown in Fig. 1, Fig. 2 and Fig. 3, a gas-tight tape steel wire rope is a 6*19W+WSC structure; it comprises a core strand 1 and 6 outer strands 2, and an outer strand 2 is 1 *19W structure; 6 outer layer strands 2 are wrapped on the outer side of the core strand 1; the core strand 1 is a WSC structure, and the WSC is a point contact 1*19 structure;

It is characterized in that all the steel wires contained in the core strand 1 are conventional steel wires, and the wire diameter of the core strand 1 is 0.70 mm, 0.76 mm and 0.88 mm from the outside to the inside respectively; the outer strand 2 is from the inside to the outside by the outer strand a core wire 2.1, an outer layer of intermediate strands 2.2 and an outer layer of outer strands 2.3;

The outer outer layer of the outer layer 2.3 consists of a thick outer steel wire 2.3.1 and an outer outer layer of thin steel wire 2.3.2, an outer outer layer of thick steel wire 2.3.1 and outer outer strand. The thin steel wires 2.3.2 are interlaced and arranged on the outer side of the outer layer of the outer layer of the outer layer 2.2;

The outer diameter of the outer layer of the thick wire 2.3.1 has a diameter of 0.70 mm, and the outer layer of the outer layer of fine wire 2.3.2 has a diameter of 0.54 mm;

The outer wire strand intermediate layer 2.2 has a wire diameter of 0.64 mm, and the core wire 2.1 has a diameter of 0.70 mm;

The outer wire outer thick layer steel wire 2.3.1 is a flat wave-shaped bent steel wire;

The outer diameter of the outer strand of the thick steel wire 2.3.1 has a wavelength L of 3.5 mm and a wave height h of 0.06 mm.

Example 2, as shown in FIG. 1, FIG. 2 and FIG. 4, a gas-impermeable tape steel wire rope is a 6*19W+WSC structure; it comprises a core strand 1 and 6 outer strands 2, and an outer strand 2 is 1 *19W structure; 6 outer layer strands 2 are wrapped on the outer side of the core strand 1; the core strand 1 is a WSC structure, and the WSC is a point contact 1*19 structure;

It is characterized in that all the steel wires contained in the core strand 1 are conventional steel wires, and the wire diameter of the core strands 1 is 0.70 mm, 0.76 mm and 0.88 mm from the outside to the inside;

The outer layer 2 consists of an outer core strand 2.1, an outer strand intermediate layer 2.2 and an outer strand outer layer 2.3 from the inside out;

The outer steel wire outer thick layer steel wire 2.3.1 is a flat wave-shaped bent steel wire, and the outer steel wire intermediate wire layer 2.2 each wire is a flat wave-shaped bent steel wire;

The outer diameter of the outer wire layer of the thick steel wire 2.3.1 has a wavelength L of 3.5 mm and a wave height h of 0.07 mm;

The outer wire of the outer layer of the intermediate layer 2.2 has a wavelength L of 3.2 mm and a wave height h of 0.06 mm.

Example 3, as shown in FIG. 1, FIG. 2 and FIG. 5, a gas-impermeable tape steel wire rope is a 6*19W+WSC structure; it comprises a core strand 1 and 6 outer strands 2, and an outer strand 2 is 1 *19W structure; 6 outer strands 2 are wrapped on the outer side of the core strand 1; the core strand 1 is a WSC structure, and the WSC is a line contact 1*19 structure;

It is characterized in that the core strand 1 is a linear strand, and the outermost steel wire of the core strand 1 has a diameter of 0.87 mm thick steel wire 1.1 and a 0.65 mm thin steel wire 1.2, respectively, wherein the thick steel wire 1.1 having a diameter of 0.87 mm is a plane wave. The bent steel wire has a wavelength of 4.35 mm and a wave height of 0.08 mm; the diameter of the secondary steel wire 1.3 of the core strand 1 is 0.81 mm, and the diameter of the central steel wire 1.4 of the core strand 1 is 0.87 mm;

The outer diameter of the outer strand of the thick steel wire 2.3.1 has a wavelength L of 3.5 mm and a wave height h of 0.07 mm.

Example 4, as shown in FIG. 1, FIG. 2 and FIG. 6, a gas-impermeable tape steel wire rope is a 6*19W+WSC structure; it comprises a core strand 1 and 6 outer strands 2, and an outer strand 2 is 1 *19W structure; 6 outer strands 2 are wrapped on the outer side of the core strand 1; the core strand 1 is a WSC structure, and the WSC is a line contact 1*19 structure;

It is characterized in that the core strand 1 is a linear strand, and the outermost steel wire of the core strand 1 has a diameter of 0.87 mm thick steel wire 1.1 and a 0.65 mm thin steel wire 1.2, respectively, wherein the thick steel wire 1.1 having a diameter of 0.87 mm is a plane wave. The bent steel wire has a wavelength of 4.35 mm and a wave height of 0.08 mm; the secondary layer steel wire 1.3 of the core strand 1 has a diameter of 0.81 mm, and the secondary layer steel wire 1.3 is a flat wave-shaped bent steel wire having a wavelength of 4.05 mm and a wave height of 0.08mm; the center wire 1.4 of the core strand 1 has a diameter of 0.87mm

Claims

A gas impermeable tape steel cord comprising a core strand and a plurality of outer strands, a plurality of outer strands being wrapped on the outside of the core strand; the core strands being point contact strands or strand contact strands;

Characterized in that the outer layer consists of an outer core strand, an outer strand intermediate layer and an outer strand outer layer from the inside out;

The outer outer layer of the outer strand consists of a thick outer steel wire of outer outer layer and a thin steel wire of outer outer layer of silk. The outer outer layer of thick outer steel wire and the outer outer layer of thin outer steel wire are interlaced and coated on the outer layer. Outside the middle layer of the strand;

Each of the outer wire outer layer of the thick wire or/and the outer layer of the outer layer of the outer layer is a flat undulating bent wire.
The gas-impermeable tape steel cord according to claim 1, wherein when the core strands are in contact with the strands, the core strands are straight-line strands, and all or part of the outermost steel wires are flat wavy bent steel wires, or All or part of the outermost steel wire and the secondary steel wire are flat undulating bent steel wires.
The gas-impermeable tape steel cord according to claim 1, wherein when the core strand contacts the strand, the core strand is a linear strand, and all or part of the outermost steel wire is a flat wave-shaped bent steel wire, or All or part of the outermost steel wire and the secondary steel wire are flat wave-shaped bent steel wires, or all steel wires are conventional round steel wires.
A gas-impermeable tape steel cord according to claim 1, 2 or 3, wherein the wave-shaped bent steel wire has a wave pitch of 3 to 8 times the diameter of the round wire, and the wave height is 0.05 to the diameter of the round wire. 1.0 times.