CN217997652U - 2+4 extra-high strength steel cord for tyre - Google Patents
2+4 extra-high strength steel cord for tyre Download PDFInfo
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- CN217997652U CN217997652U CN202222440910.4U CN202222440910U CN217997652U CN 217997652 U CN217997652 U CN 217997652U CN 202222440910 U CN202222440910 U CN 202222440910U CN 217997652 U CN217997652 U CN 217997652U
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- tire
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- high strength
- sheath
- steel cord
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Abstract
The utility model discloses a 2+4 tyre extra-high strength steel cord, which comprises a core strand and an outer layer strand, wherein the core strand consists of two core steel wires without weaving and twisting; the outer layer strand is formed by weaving and twisting four sheath steel wires around the core strand; the diameters of the core steel wire and the sheath steel wire are the same; the 2+4 tire extra-high strength steel cord is used in a radial tire carcass or a belt ply, and the fatigue resistance of the tire can be enhanced; compared with a conventional 2+4 multiplied by 0.22HT structural steel cord, under the condition of equal cord strength, the usage amount of the 2+4 tire extra-high strength steel cord and rubber is reduced by 3.2%, and the weight of the tire can be reduced.
Description
Technical Field
The utility model relates to a steel cord technical field specifically is a 2+4 tire extra high strength steel cord.
Background
In order to reduce environmental pollution, environmentally friendly tires are required. One direction is to develop lighter weight tires. One of the solutions is to reduce the amount of rubber in the belt of the tire, taking measures to reduce the thickness of the belt and to reduce the weight of the tire. However, this would allow adjacent belts to easily separate, which would lead to tire failure. Another solution is to reduce the weight of the steel cord in the tire by taking measures that the steel cord strength is increased, the steel cord becomes lighter and the tire becomes lighter under the same strength conditions.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a 2+4 tire extra high strength steel cord to solve the problem of how to alleviate tire weight among the prior art.
In order to achieve the above object, the utility model provides a following technical scheme:
the utility model provides a 2+4 tyre extra-high strength steel cord, which comprises a core strand and an outer layer strand, wherein the core strand consists of two core steel wires without weaving and twisting; the outer layer strand is formed by weaving and twisting four sheath steel wires around the core strand; the core wire and the sheath wire have the same diameter.
Furthermore, the twisting direction of the four sheath steel wires of the outer layer strand is S twisting.
Furthermore, the lay length of the four sheath steel wires of the outer layer strand is 8.0-16.0 mm.
Furthermore, the lay length of the four sheath steel wires of the outer layer strand is 14.0mm.
Further, the diameter of the core wire and the sheath wire is 0.175 to 0.350mm.
Further, the core wire and the sheath wire each have a diameter of 0.220mm.
Further, the tensile strength of the core wire and the sheath wire is (4350-2000) × d MPa, where d is the diameter of the core wire and the sheath wire.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model provides a 2+4 tire extra-high strength steel cord, can be applicable to any tire, for example passenger train tire, truck tire etc.; the wear resistance of the tire can be improved, and the service life of the tire can be prolonged.
The 2+4 tire extra-high strength steel cord is used in a radial tire carcass or a belt ply, and the fatigue resistance of the tire can be enhanced; compared with the conventional 2+4 x 0.22HT structural steel cord, under the condition of equal cord strength, the using amount of the 2+4 tire extra-high strength steel cord and the rubber compound is reduced by 3.2%, and the weight of the tire can be reduced.
Drawings
FIG. 1 is a schematic structural diagram of a 2+4 extra-high strength steel cord for a tire according to an embodiment of the present invention;
fig. 2 is a cross-sectional view of 2+4 extra high strength steel cord for tire provided by the embodiment of the present invention.
In the figure: 1-core steel wire and 2-sheath steel wire.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1 and fig. 2, the 2+4 extra-high strength steel cord for a tire provided by the embodiment of the present invention comprises a core strand and an outer layer strand, wherein the core strand is composed of two core steel wires 1 without twisting; the outer layer strand is formed by four sheath steel wires 2 which are twisted around the core strand; the core wire 1 and the sheath wire 2 have the same diameter.
The twisting direction of the four sheath steel wires 2 of the outer layer strand is S twisting.
The lay length of the four sheath steel wires 2 of the outer layer strand is 8.0-16.0 mm.
The lay length of the four sheath steel wires 2 of the outer layer strand is 14.0mm.
The diameter of the core wire 1 and the sheath wire 2 is 0.175 to 0.350mm.
The core wire 1 and the sheath wire 2 each have a diameter of 0.220mm.
The tensile strength of the core wire 1 and the sheath wire 2 is (4350-2000) × d MPa, where d is the diameter of the core wire 1 and the sheath wire 2.
Example 1
A2+4 tire extra-high strength steel cord comprises a core strand and an outer layer strand, wherein the core strand consists of two core steel wires 1 without weaving and twisting; the outer layer strand is formed by four sheath steel wires 2 which are twisted around the core strand; the twisting direction of the four sheath steel wires 2 of the outer layer strand is S twisting; the twisting pitch of the four sheath steel wires 2 of the outer layer strand is 14.0mm; the diameters of the core steel wire 1 and the sheath steel wire 2 are the same and are both 0.220mm; the 2+4 tire ultra-high strength steel cord is 2+4 x 0.22UT structural steel cord.
Table 1 is a table comparing the performance indexes of 2+4 × 0.22HT structural steel cord and 2+4 × 0.22UT structural steel cord of the embodiment 1 of the present invention:
TABLE 1
| |
2+4×0.20 |
2/4×0.22HT |
| Thickness (mm) | 0.68 | 0.68 |
| Lay length (mm) | ∞/14.0 | ∞/14.0 |
| Direction of twist | -/S | -/S |
| Break force (N) | 750 | 670 |
| Linear density (g/m) | 1.81 | 1.81 |
| Curtain cloth strength (N/dm) | 54000 | 40200 |
| Cord fabric weight index (%) | 96.8 | 100 |
The 2+4 tire ultra-high strength steel cord is used in a radial tire carcass or a belted layer, and the fatigue resistance of the tire can be enhanced; compared with the conventional 2+4 x 0.22HT structural steel cord, under the condition of equal cord strength, the using amount of the 2+4 tire extra-high strength steel cord and the rubber compound is reduced by 3.2%, and the weight of the tire can be reduced.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (7)
1. The 2+4 extra high strength steel cord for the tire is characterized by comprising a core strand and an outer layer strand, wherein the core strand consists of two core steel wires (1) and is free of weaving and twisting; the outer layer strand is formed by four sheath steel wires (2) which are twisted around the core strand; the diameters of the core steel wire (1) and the sheath steel wire (2) are the same.
2. The 2+4 extra high strength steel cord for tire as claimed in claim 1, wherein the twist direction of said outer layer strand four sheath steel wires (2) is S twist.
3. The 2+4 extra high strength steel cord for tire as claimed in claim 1, wherein the lay length of the four sheath steel wires (2) of the outer strand is 8.0-16.0 mm.
4. The 2+4 extra high strength steel cord for tire as claimed in claim 3, wherein the lay length of said outer layer strand four sheath steel wires (2) is 14.0mm.
5. The 2+4 extra high strength steel cord for tire according to claim 1, characterized in that the diameter of the core steel wire (1) and the sheath steel wire (2) is 0.175-0.350 mm.
6. 2+4 tyre super high strength steel cord according to claim 5 characterized by that the diameter of the core steel wire (1) and the sheath steel wire (2) are both 0.220mm.
7. The 2+4 extra high strength steel cord for tire according to claim 1, characterized in that the tensile strength of the core wire (1) and the sheath wire (2) is (4350-2000) × d MPa, where d is the diameter of the core wire (1) and the sheath wire (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222440910.4U CN217997652U (en) | 2022-09-15 | 2022-09-15 | 2+4 extra-high strength steel cord for tyre |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222440910.4U CN217997652U (en) | 2022-09-15 | 2022-09-15 | 2+4 extra-high strength steel cord for tyre |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217997652U true CN217997652U (en) | 2022-12-09 |
Family
ID=84288435
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222440910.4U Active CN217997652U (en) | 2022-09-15 | 2022-09-15 | 2+4 extra-high strength steel cord for tyre |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217997652U (en) |
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2022
- 2022-09-15 CN CN202222440910.4U patent/CN217997652U/en active Active
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