CN211570920U - Steel cord with 11 x 27 structure - Google Patents
Steel cord with 11 x 27 structure Download PDFInfo
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- CN211570920U CN211570920U CN201922035676.5U CN201922035676U CN211570920U CN 211570920 U CN211570920 U CN 211570920U CN 201922035676 U CN201922035676 U CN 201922035676U CN 211570920 U CN211570920 U CN 211570920U
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- steel
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- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B1/00—Constructional features of ropes or cables
- D07B1/06—Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core
- D07B1/0606—Reinforcing cords for rubber or plastic articles
- D07B1/0613—Reinforcing cords for rubber or plastic articles the reinforcing cords being characterised by the rope configuration
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- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B1/00—Constructional features of ropes or cables
- D07B1/06—Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core
- D07B1/0606—Reinforcing cords for rubber or plastic articles
- D07B1/062—Reinforcing cords for rubber or plastic articles the reinforcing cords being characterised by the strand configuration
- D07B1/0626—Reinforcing cords for rubber or plastic articles the reinforcing cords being characterised by the strand configuration the reinforcing cords consisting of three core wires or filaments and at least one layer of outer wires or filaments, i.e. a 3+N configuration
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- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B1/00—Constructional features of ropes or cables
- D07B1/06—Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core
- D07B1/0606—Reinforcing cords for rubber or plastic articles
- D07B1/062—Reinforcing cords for rubber or plastic articles the reinforcing cords being characterised by the strand configuration
- D07B1/0633—Reinforcing cords for rubber or plastic articles the reinforcing cords being characterised by the strand configuration having a multiple-layer configuration
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- Ropes Or Cables (AREA)
Abstract
The utility model discloses a steel cord of 11X 27 structure belongs to steel cord technical field. The steel cord is formed by twisting three strands of 3+9+15 Xd core strand steel wires and eight strands of 3+9+15 Xd outer strand steel wires, and the eight strands of outer strand steel wires are uniformly distributed around the three strands of core strand steel wires; the diameter of the core strand steel wire is the same as that of the outer strand steel wire, the twisting direction of the core strand steel wire and the twisting direction of the outer strand steel wire are the same, and the twisting distance of the core strand steel wire is 0.5 times of that of the outer strand steel wire; the cross section of the steel cord is circular. A steel cord of 11X 27 structure can be used as steel cord for the reinforcing of engineering vehicle radial tire and hose rubber, and clearance between its outer thigh is favorable to rubber fully to permeate core strand steel wire, has improved tire and hose rubber's anticorrosive, fatigue-resistant, shock resistance and bonding retentivity, has improved tire and hose rubber's life.
Description
Technical Field
The utility model belongs to the technical field of the steel cord, concretely relates to steel cord of 11X 27 structure.
Background
The steel cord is an important component in a radial engineering tire framework material, is a steel cord with a 7 x (3 +9+15 × 0.245) +0.245 structure commonly used for a radial engineering tire, and is formed by weaving and twisting one strand of 3+9+15 × 0.245 core steel wire, six strands of 3+9+15 × 0.245 outer-layer steel wire and one 0.245mm outer winding wire, wherein the 3+9+15 × 0.245 twisting direction is ZZZ, the twisting pitch is 6.3/12.5/18.0mm, each layer of strands are arranged tightly, gaps among the outer-layer strand steel wires are small, and rubber cannot effectively permeate into the core steel wire, so that the air content in the cord is high. The structure of the steel cord and the strength, bending stiffness and adhesive property with rubber thereof have direct influence on the tire, and the defects caused by unreasonable structural design cannot be completely compensated only by controlling the production process of the steel cord. During the use of the radial tire, the problem of the failure of the bearing capacity of the cord is easily caused by the insufficient strength of the steel wire cord or the corrosion and abrasion of the steel wire.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a steel cord of 11X 27 structure to it is little to solve the clearance between the outer thigh of steel cord among the prior art, and rubber can not effectively permeate core thigh steel wire and cause the higher technical problem of cord inside air content.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a steel cord with 11 x 27 structure is formed by three strands of core strand steel wires and eight strands of outer strand steel wires in a twisting mode, wherein the eight strands of outer strand steel wires are uniformly distributed around the three strands of core strand steel wires to form the steel cord with a circular section, each strand of core strand steel wire comprises a first layer formed by three steel wire monofilaments, a second layer formed by nine steel wire monofilaments and twisting the steel wire monofilaments around the steel wire monofilaments, and a third layer formed by fifteen steel wire monofilaments and twisting the steel wire monofilaments around the nine steel wire monofilaments, each strand of outer strand steel wire also comprises a first layer formed by three steel wire monofilaments, a second layer formed by nine steel wire monofilaments and twisting the steel wire monofilaments around the steel wire monofilaments, and a third layer formed by fifteen steel wire monofilaments and twisting the steel wire monofilaments around the nine steel wire monofilaments, wherein the diameters and the twisting directions of the steel wire monofilaments in the core strand steel wires and the outer strand steel wires are the same, the twisting pitch of the first layer steel wire monofilaments in the core strand steel wires is the same as the twisting pitch of the first layer, the lay length of a second layer of steel wire monofilaments in the core strand steel wire is the same as that of a second layer of steel wire monofilaments in the outer layer strand steel wire, and the lay length of a third layer of steel wire monofilaments in the core strand steel wire is the same as that of a third layer of steel wire monofilaments in the outer layer strand steel wire; the twisting directions of the core strand steel wires and the outer layer strand steel wires are the same, and the twisting distance of the core strand steel wires is 0.5 times of that of the outer layer strand steel wires.
Furthermore, the twisting directions of the core strand steel wires and the outer layer strand steel wires are S-twisted, and the twisting directions of the first layer steel wire monofilaments, the second layer steel wire monofilaments and the third layer steel wire monofilaments in the core strand steel wires and the outer layer strand steel wires are Z-twisted.
Furthermore, the twisting directions of the core strand steel wires and the outer layer strand steel wires are Z-twisting, and the twisting directions of the first layer steel wire monofilaments, the second layer steel wire monofilaments and the third layer steel wire monofilaments in the core strand steel wires and the outer layer strand steel wires are S-twisting.
Furthermore, the lay length of the outer layer strand steel wires in the twisting process is 40.0-60.0 mm.
Furthermore, the twisting pitch of the steel wires of the core strand is 25.0mm, and the twisting pitch of the steel wires of the outer layer strand is 50.0 mm.
Furthermore, the diameter of the steel wire monofilament in the core strand steel wire and the outer layer strand steel wire is 0.165-0.38 mm.
Further, the diameter of the steel filament in the core strand steel filament and the outer strand steel filament is 0.245 mm.
Furthermore, the twisting pitch of the first layer of steel wire filaments in the core strand steel wires and the outer layer strand steel wires is 6.3mm, the twisting pitch of the second layer of steel wire filaments is 12.5mm, and the twisting pitch of the third layer of steel wire filaments is 18.0 mm.
Further, the diameter of each of the core strand steel wires and the outer layer strand steel wires is 1.5 mm.
Further, the strength grade of the core strand steel wire and the outer layer strand steel wire is any one of a normal strength NT, a high strength HT, an ultra-high strength ST, an ultra-high strength UT, and an ultra-high strength MT.
Compared with the prior art, the utility model discloses the beneficial effect who reaches:
(1) the steel cord with the 11 x 27 structure of the utility model has larger gaps between the outer strand steel wires, is beneficial to the rubber to fully permeate into the core strand steel wires, avoids the point contact friction between each layer of steel wires caused by not permeating enough rubber, and further avoids the problem that the bearing capacity of the steel cord is invalid due to abrasion;
(2) a steel cord of 11X 27 structure can be used as engineering vehicle radial tire and rubber hose reinforcing steel cord, has improved tire and rubber hose's anticorrosive, fatigue-resistant, shock resistance and adhesion holding power, has improved tire and rubber hose's life.
Drawings
Fig. 1 is a schematic cross-sectional view of a steel cord of 11 × 27 structure according to an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view of a 7 x (3 +9+15 x d) + d1 structural steel cord commonly used in the prior art;
in the figure: 1. 4 core strand steel wire; 2.5 outer layer strand steel wire; 6, winding steel wires outside; d1, d 1' first layer of steel filaments; d2, d 2' second layer of steel filaments; d3, d 3' third layer of steel filaments.
Detailed Description
The invention will be further described with reference to specific embodiments. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
It should be noted that, in the description of the present invention, the terms "front", "rear", "left", "right", "upper", "lower", "inner", "outer", etc. indicate the directions or positional relationships based on the directions or positional relationships shown in the drawings, and are only for convenience of description of the present invention but do not require the present invention to be constructed and operated in a specific direction, and thus, should not be construed as limiting the present invention. As used in the description of the present invention, the terms "front," "back," "left," "right," "up," "down" and "in" refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.
As shown in figure 1, the steel cord with the 11 multiplied by 27 structure can be used for reinforcing radial tires and rubber hoses of engineering vehicles, and is formed by weaving and twisting three strands of 3+9+15 multiplied by d core strand steel wires 1 and eight strands of 3+9+15 multiplied by d outer strand steel wires 2, the section of the steel cord is circular, and the eight strands of outer strand steel wires 2 are woven and twisted around the core strand steel wires 1 to form a structure that the eight strands of outer strand steel wires 2 are uniformly distributed around the three strands of core strand steel wires 1. The core strand steel wire 1 and the outer layer strand steel wire 2 are respectively formed by weaving and twisting three first layer steel wire monofilaments d1, nine second layer steel wire monofilaments d2 and fifteen third layer steel wire monofilaments d3, the nine second layer steel wire monofilaments d2 are woven and twisted around the three steel wire monofilaments, and the fifteen third layer steel wire monofilaments d3 are woven and twisted around the nine second layer steel wire monofilaments d 2. The diameters of all layers of steel wire monofilaments in the core strand steel wire 1 and the outer layer strand steel wire 2 are the same, and the diameter range of the selected steel wire monofilaments is 0.165-0.38 mm. The twisting directions of the steel wire monofilaments in each layer of the core strand steel wire 1 and the outer layer strand steel wire 2 are the same. The lay length of the first layer steel wire filament d1 in the core strand steel wire 1 is the same as the lay length of the first layer steel wire filament d1 in the outer layer strand steel wire 2, the lay length of the second layer steel wire filament d2 in the core strand steel wire 1 is the same as the lay length of the second layer steel wire filament d2 in the outer layer strand steel wire 2, and the lay length of the third layer steel wire filament d3 in the core strand steel wire 1 is the same as the lay length of the third layer steel wire filament d3 in the outer layer strand steel wire 2. The utility model discloses a change steel cord's structure, compensate because of the unreasonable defect that brings of steel cord structural design, improve steel cord's oozing gluey performance, shock resistance and fatigue resistance ability, reduce the air content between the steel cord strand for tire or rubber hose and the thigh, improve tire or rubber hose cord fabric intensity level. The twisting directions of the core strand steel wire 1 and the outer layer strand steel wire 2 are the same; the twisting pitch of the core strand steel wire 1 is 0.5 times of the twisting pitch of the outer strand steel wire 2, so that the contact area between the steel wires of all layers is increased, the point contact friction between the steel wires of all layers of the steel wire cord is reduced, the problem of failure of the bearing capacity of the cord due to point contact abrasion of the steel wires of all layers in the use process of the engineering radial tire or the rubber hose is avoided, the rubber seepage performance, the corrosion resistance, the fatigue resistance, the impact resistance and the adhesion retention of the engineering radial tire or the rubber hose are improved, and the service life of the tire or the rubber hose is prolonged.
The strength grades of the core strand steel wire 1 and the outer layer strand steel wire 2 are normal strength NT, high strength HT, ultra-high strength ST, ultra-high strength UT or ultra-high strength MT. The utility model is suitable for a steel wire to the different intensity grades of normal strength NT, high strength HT, superhigh strength ST, extra-high strength UT or high strength MT is compiled and is twisted with fingers, can improve the intensity requirement, the glue permeability performance and shock resistance, the fatigue resistance ability of compiling the steel cord that twists with fingers the formation.
The first embodiment is as follows:
in the embodiment, the diameters of the steel wire monofilaments of each layer selected from the core strand steel wire 1 and the outer layer strand steel wire 2 are both 0.245 mm. The twisting pitch of the first layer steel wire monofilament d1 in the core strand steel wire 1 and the outer layer steel wire 2 is 6.3mm, the twisting pitch of the second layer steel wire monofilament d2 is 12.5mm, and the twisting pitch of the third layer steel wire monofilament d3 is 18.0 mm. The twisting pitch of the core strand steel wires 1 is 0.5 times of the twisting pitch of the outer layer strand steel wires 2. The core strand steel wire 1 and the outer layer strand steel wire 2 adopt the same twisting direction, and are S-twisted. The present embodiment (3 + 8) steel cord structure is used for an engineering vehicle radial tire and a rubber hose reinforcing steel cord.
Table 1 shows a comparison table of performance indexes between 7 × (3 +9+15 × 0.245) HT structural steel cords commonly used in radial tires in the prior art and the first embodiment of the present invention:
TABLE 1
FIG. 2 is a schematic cross-sectional view of a 7 x (3 +9+15 x d) + d1 structural steel cord commonly used in the prior art, in combination with FIGS. 1 and 2, table 1 shows that the diameter of a 7 × (3 +9+15 × 0.245) +0.245HT structural steel cord is 4.84mm, each layer of steel filaments in the core strand steel wires 4 and each layer of steel filaments in the outer layer strand steel wires 5 are ZZZ twisted, the outer layer strand steel wires 5 are S twisted, the twist direction of the outer-wound steel wires 6 is Z twisted, the lay length of the first layer of steel filaments d1 ' in the core strand steel wires 4 and the outer layer of strand steel wires 5 is 6.3mm, the lay length of the second layer of steel filaments d2 ' is 12.5mm, the lay length of the third layer of steel filaments d3 ' is 18.0mm, the lay length of the outer layer of steel wires 5 is 55.0mm, the lay length of the outer-wound steel wires 6 is 5.0mm, the breaking force is 22385N or more, the cord diameter is 4.84mm, the breaking force/cord diameter is 4625N/(mm) or more, 2600N/25 mm; the diameter of the steel cord of the first embodiment of the utility model is 6.0mm, each layer of steel wire monofilament is ZZZ twists with fingers in the core strand steel wire 1 and the outer strand steel wire 2, the core strand steel wire 1 and the outer strand steel wire 2 are S twists with fingers, the lay length of the core strand steel wire 1 is 25.0mm, the lay length of the outer strand steel wire 2 is 50.0mm, the breaking force is not less than 31000N, the breaking force/cord diameter is 5166.6N/(mm), the adhesive force is not less than 4800N/25 mm; compared with the prior art, the embodiment of the utility model provides an adopt the steel wire strand of the same intensity level, improve steel wire cord intensity, ooze gluey rate and fatigue resistance ability through increasing strand quantity.
Example two:
the diameters of the steel wire monofilaments of each layer selected from the core strand steel wire 1 and the outer layer strand steel wire 2 in the embodiment are both 0.175 mm. The twisting pitch of the first layer steel wire monofilament d1 in the core strand steel wire 1 and the outer layer steel wire 2 is 5.0mm, the twisting pitch of the second layer steel wire monofilament d2 is 10.0mm, and the twisting pitch of the third layer steel wire monofilament d3 is 16.0 mm. The twisting pitch of the core strand steel wires 1 is 0.5 times of the twisting pitch of the outer layer strand steel wires 2. The core strand steel wire 1 and the outer layer strand steel wire 2 adopt the same twisting direction, and are S-twisted. This example (3 + 8) steel cord structure is used for engineering radial tires and rubber hose steel cords.
Table 2 is a table comparing the performance index of 7 × (3 +9+15 × 0.22) +0.20HT structural steel cord commonly used in radial tires in the prior art with the embodiment two of the present invention:
TABLE 2
FIG. 2 is a schematic cross-sectional view of a 7 x (3 +9+15 × d + d1 structural steel cord commonly used in the prior art, and as can be seen from FIG. 1, FIG. 2, Table 2, the diameter of the 7 x (3 +9+15 × 0.22) +0.20HT structural steel cord is 4.35mm, each layer of steel filaments in the core strand steel 4 is SSS twist, each layer of steel filaments in the outer layer strand steel 5 is ZZZ twist, the outer layer strand steel 5 is S twist, the lay direction of the outer winding steel wire 6 is Z twist, the lay length of the first layer of steel filaments d1 in the core strand steel 4 and the outer layer of steel filaments is 6.3mm, the lay length of the second layer of steel filaments d2 'is 12.5mm, the lay length of the third layer of steel filaments d 3' is 18.0mm, the lay length of the outer strand steel wire 5 is 48.0mm, the lay length of the outer winding steel wire 6 is 5.0mm, the breaking force is not less than 174.35 mm, and the breaking force N4127.6 mm/(N25 mm) diameter of the cord is 4/25 mm/(N4127.6 mm), the adhesive force is more than or equal to 2600N/25 mm; the diameter of the steel cord of the second embodiment of the utility model is 4.20mm, each layer of steel wire monofilament is ZZZ twists with fingers in the core strand steel wire 1 and the outer strand steel wire 2, the core strand steel wire 1 and the outer strand steel wire 2 are S twists with fingers, the lay length of the core strand steel wire 1 is 23.0mm, the lay length of the outer strand steel wire 2 is 46.0mm, the breaking force is not less than 17300N, the breaking force/cord diameter is 4119N/(mm), the adhesive force is not less than 3200N/25 mm; compared with the two, the embodiment of the utility model provides a two adopt the same strength grade and the steel wire strand of monofilament diameter, improve steel wire cord intensity, glue permeation rate and fatigue resistance ability through increasing strand quantity.
It can be seen through the contrast above, when the radial tire of preparation equal density, adopt the utility model discloses the radial tire intensity of preparation is equal with the radial tire intensity that adopts prior art preparation, but cord oozes gluey performance and fatigue resistance can improve by a wide margin. The utility model discloses can effectively reduce engineering vehicle radial tire and rubber hose's manufacturing cost, prolong engineering vehicle radial tire and rubber hose's life.
The embodiments of the present invention are merely examples. According to different applications, the steel filaments in the core strand steel wires 1 and the steel filaments in the outer strand steel wires 2 can be proportioned by other diameters, and the twist direction is ZZZ/S/S or SSS/Z/Z (3 + 8) x (3 +9+15 x d) structure.
The present invention has been disclosed in the foregoing with reference to the preferred embodiments, but it is not intended to limit the present invention, and all technical solutions obtained by adopting equivalent replacement or equivalent transformation schemes fall within the protection scope of the present invention.
Claims (10)
1. A steel cord with 11 x 27 structure is characterized in that the steel cord is formed by weaving and twisting three strands of core strand steel wires and eight strands of outer strand steel wires, the eight strands of outer strand steel wires are uniformly distributed around the three strands of core strand steel wires to form the steel cord with a circular section, each strand of core strand steel wires comprises a first layer consisting of three steel wire monofilaments, a second layer formed by weaving and twisting nine steel wire monofilaments around the steel wire monofilaments and a third layer formed by weaving and twisting fifteen steel wire monofilaments around the nine steel wire monofilaments, each strand of outer strand steel wires also comprises a first layer consisting of three steel wire monofilaments, a second layer formed by weaving and twisting nine steel wire monofilaments around the steel wire monofilaments and a third layer formed by weaving and twisting fifteen steel wire monofilaments around the nine steel wire monofilaments, wherein the diameters and the twisting directions of the steel wire monofilaments in the core strand steel wires are the same, the twisting pitch of the first layer steel wire monofilaments in the core strand steel wires is the same as the twisting pitch of the first layer steel wire monofilaments in the outer strand steel wires, the lay length of a second layer of steel wire monofilaments in the core strand steel wire is the same as that of a second layer of steel wire monofilaments in the outer layer strand steel wire, and the lay length of a third layer of steel wire monofilaments in the core strand steel wire is the same as that of a third layer of steel wire monofilaments in the outer layer strand steel wire; the twisting directions of the core strand steel wires and the outer layer strand steel wires are the same, and the twisting distance of the core strand steel wires is 0.5 times of that of the outer layer strand steel wires.
2. A steel cord of 11 x 27 structure as claimed in claim 1, wherein said core strand steel wires and said outer strand steel wires are each S-twisted, and said core strand steel wires and said outer strand steel wires are each Z-twisted in the twisting direction of the first, second and third layers of steel filaments.
3. A steel cord of 11 x 27 structure as claimed in claim 1, wherein said core strand steel wires and said outer strand steel wires are Z-twisted in both directions, and said core strand steel wires and said outer strand steel wires are S-twisted in both directions of the filaments of the first, second and third layers.
4. A steel cord of 11 x 27 structure as claimed in claim 1, wherein said outer layer strand wires are twisted with a lay length of 40.0 to 60.0 mm.
5. A steel cord of 11 x 27 structure as claimed in claim 1, wherein said core strand steel wires are twisted at a pitch of 25.0mm, and said outer layer strand steel wires are twisted at a pitch of 50.0 mm.
6. A steel cord of 11 x 27 structure as claimed in claim 1, wherein the diameter of the steel filament in said core strand steel filament and said outer strand steel filament is 0.165 to 0.38 mm.
7. A steel cord of 11 x 27 structure as claimed in claim 1, characterized in that the diameter of the steel filaments in said core strand steel filaments and outer strand steel filaments is 0.245 mm.
8. A steel cord of 11 x 27 structure as claimed in claim 2, wherein said core strand steel wires and said outer strand steel wires have a first layer of steel filaments twisted with a pitch of 6.3mm, a second layer of steel filaments twisted with a pitch of 12.5mm, and a third layer of steel filaments twisted with a pitch of 18.0 mm.
9. A steel cord of 11 x 27 structure as claimed in claim 1, characterized in that said core strand steel filaments and said outer layer strand steel filaments are each 1.5mm in diameter.
10. A steel cord of 11 x 27 structure, according to claim 1, characterized in that said core strand steel filaments and outer layer strand steel filaments have strength grades of any one of normal strength NT, high strength HT, ultra high strength ST, ultra high strength UT and ultra high strength MT.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922035676.5U CN211570920U (en) | 2019-11-22 | 2019-11-22 | Steel cord with 11 x 27 structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922035676.5U CN211570920U (en) | 2019-11-22 | 2019-11-22 | Steel cord with 11 x 27 structure |
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| Publication Number | Publication Date |
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| CN211570920U true CN211570920U (en) | 2020-09-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922035676.5U Active CN211570920U (en) | 2019-11-22 | 2019-11-22 | Steel cord with 11 x 27 structure |
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| CN (1) | CN211570920U (en) |
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- 2019-11-22 CN CN201922035676.5U patent/CN211570920U/en active Active
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