CN216786685U - Steel cord for radial tire - Google Patents
Steel cord for radial tire Download PDFInfo
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- CN216786685U CN216786685U CN202220232930.XU CN202220232930U CN216786685U CN 216786685 U CN216786685 U CN 216786685U CN 202220232930 U CN202220232930 U CN 202220232930U CN 216786685 U CN216786685 U CN 216786685U
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Abstract
The utility model provides a steel cord for a radial tire, which comprises an inner layer strand, a middle strand, an outer layer strand and a steel cord, wherein the inner layer strand comprises three core wires which are distributed triangularly, the middle strand comprises 9 middle steel wires which are uniformly distributed circularly around the inner layer strand, the outer layer strand comprises 15 outer steel wires which are uniformly distributed circularly around the middle strand, two adjacent middle steel wires are arranged at intervals, the interval size is 0.05mm, two adjacent outer winding steel wires are arranged at intervals, and the interval size is 0.1 mm; the interval sets up between inlayer thigh and the middle thigh, and the interval size is 0.05mm, the interval sets up between outer thigh and the middle thigh, and the interval size is 0.05 mm. The steel cord for the radial tire forms larger glue permeation area, so that the combination between strands is tighter, the adhesive force between the steel cord and the glue stock is improved, the corrosion resistance of the steel cord is improved, and the service life of the tire is prolonged.
Description
Technical Field
The utility model belongs to the technical field of steel cord production, and particularly relates to a steel cord for a radial tire.
Background
With the rapid development of the automobile industry, the demand of radial tires is increasing continuously, higher requirements are put forward on the performance and quality of steel cords, and particularly, the corrosion resistance of the steel cords for the radial tires is related to the service life of the whole tires, so that people pay attention to the corrosion resistance. The steel cord for the radial tire is wrapped in rubber, and the distance between every two strands of steel wires in the steel cord determines the inner rubber amount of the steel cord, and is the most important influence parameter of the corrosion resistance. At present, the steel cord for the radial tire is stranded in the same direction, the distance between each strand of the steel cord and each strand of the steel cord is small, rubber wrapping is not facilitated, and the resistance performance of the steel cord is poor.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problems, the utility model discloses a steel cord for a radial tire, which solves the problems of small glue seepage amount between each strand and steel wires, poor corrosion resistance and the like of the steel cord.
In order to achieve the purpose, the utility model adopts the following technical scheme:
the utility model provides a steel cord for radial tire, steel cord includes inlayer thigh, middle thigh, outer thigh, inlayer thigh includes that 3 are triangular distribution's core silk, middle thigh includes that 9 are circular evenly distributed at inlayer thigh around middle steel wire, outer thigh includes that 15 are circular evenly distributed at middle thigh around outer steel wire, and the interval sets up between two adjacent middle steel wires, and the interval size is 0.05mm, and the interval sets up between two adjacent outer steel wires 301, and the interval size is 0.1 mm.
Furthermore, the interval sets up between inlayer thigh and the intermediate stock, and the interval size is 0.05mm, the interval sets up between outer thigh and the intermediate stock, and the interval size is 0.05 mm.
Further, the diameter D0 of the core wire, the diameter D1 of the middle steel wire and the diameter D2 of the outer layer steel wire satisfy the following relations: d0 is more than or equal to 0.21mm and less than or equal to 0.230mm, D1 is more than or equal to 0.21mm and less than or equal to 0.230mm, and D2 is more than or equal to 0.210mm and less than or equal to 0.230 mm.
Furthermore, D2 is not less than D1 is not less than D0.
Furthermore, the diameters of the core wire, the middle steel wire and the outer layer steel wire are all 0.225 mm.
Further, the twisting direction of the core wire, the middle steel wire and the outer layer steel wire is Z.
According to the utility model, a 3+8+13+1 structure is adopted, large gaps are reserved between two adjacent middle steel wires and between two adjacent outer steel wires, rubber materials can be more easily permeated, and meanwhile, certain gaps are reserved between the inner strand and the middle strand and between the outer strand and the middle strand to form a larger glue permeation area, so that the strands are more tightly combined, the adhesive force between the steel cord and the rubber materials is improved, the corrosion resistance of the steel cord is improved, the phenomenon that water vapor in a humid environment invades into the steel cord to cause corrosion due to poor adhesion is avoided, and the service life of the tire is prolonged.
The diameters of the core wire steel wire, the middle steel wire and the outer layer steel wire are not more than 0.184mm, and are smaller compared with the diameters of the 3+9+15x0.175+0.15HT steel cords, so that the weight of the tire is reduced, the manufacturing cost of the tire is reduced, the light weight of the tire is realized, and the economic benefit is improved.
Drawings
FIG. 1 is a schematic structural view of a corrosion-resistant steel cord for a radial tire according to the present invention.
Wherein, 1-core strand, 2-outer layer strand, 3-inner layer steel wire, 101-core wire, 201-middle steel wire, and 301-outer layer steel wire.
Detailed Description
The utility model is further described with reference to the following figures and specific embodiments.
Example 1
A steel cord for a radial tire as shown in fig. 1, the steel cord comprising an inner strand 1, a middle strand 2, and an outer strand 3, the inner strand 1 comprising three core filaments 101 distributed in a triangular shape, the middle strand 2 comprising 9 middle steel filaments 201 uniformly distributed in a circular shape around the inner strand 1, the outer strand 3 comprising 15 outer steel filaments 301 uniformly distributed in a circular shape around the middle strand 2, the twist directions of the core filaments 101, the middle steel filaments 201, and the outer steel filaments are Z, the twist pitch of the core filaments is 5.5mm, the twist pitch of the middle steel filaments is 11.5mm, the twist pitch of the outer steel filaments is 17.5mm, and the diameters of the core filaments 101, the middle steel filaments 201, and the outer steel filaments 301 are 0.22 mm; two adjacent middle steel wires 201 are arranged at intervals, the interval is 0.05mm, two adjacent outer winding steel wires 301 are arranged at intervals, and the interval is 0.1 mm; the interval sets up between inlayer thigh 1 and the middle thigh 2, and the interval size is 0.05mm, the interval sets up between outer thigh 3 and the middle thigh 2, and the interval size is 0.05 mm.
The detection proves that the diameter of the steel cord is 1.28mm, the breaking force is 3000N, and the linear density is 8.15g
The adhesive strength was 1200N, and the coating rate was 90%.
Example 2
A steel cord for a radial tire as shown in fig. 1, the steel cord comprising an inner strand 1, a middle strand 2, and an outer strand 3, the inner strand 1 comprising three core filaments 101 distributed in a triangular shape, the middle strand 2 comprising 9 middle steel filaments 201 uniformly distributed in a circular shape around the inner strand 1, the outer strand 3 comprising 15 outer steel filaments 301 uniformly distributed in a circular shape around the middle strand 2, the twist directions of the core filaments 101, the middle steel filaments 201, and the outer steel filaments are Z, the twist pitch of the core filaments is 6.3mm, the twist pitch of the middle steel filaments is 12.5mm, the twist pitch of the outer steel filaments is 18mm, and the diameters of the core filaments 101, the middle steel filaments 201, and the outer steel filaments 301 are 0.225 mm; two adjacent middle steel wires 201 are arranged at intervals, the interval is 0.05mm, two adjacent outer winding steel wires 301 are arranged at intervals, and the interval is 0.1 mm; the interval sets up between inlayer thigh 1 and the middle thigh 2, and the interval size is 0.05mm, the interval sets up between outer thigh 3 and the middle thigh 2, and the interval size is 0.05 mm.
The steel cord has the diameter of 1.39mm, the breaking force of 3120N and the linear density of 8.63g
The adhesive force was 1250N, and the coating rate was 90%.
Example 3
A steel cord for a radial tire as shown in fig. 1, the steel cord comprising an inner strand 1, a middle strand 2, and an outer strand 3, the inner strand 1 comprising three core filaments 101 distributed in a triangular shape, the middle strand 2 comprising 9 middle steel filaments 201 uniformly distributed in a circular shape around the inner strand 1, the outer strand 3 comprising 15 outer steel filaments 301 uniformly distributed in a circular shape around the middle strand 2, the twist directions of the core filaments 101, the middle steel filaments 201, and the outer steel filaments are Z, the twist pitch of the core filaments is 6.5mm, the twist pitch of the middle steel filaments is 12.7mm, the twist pitch of the outer steel filaments is 18.5mm, and the diameters of the core filaments 101, the middle steel filaments 201, and the outer steel filaments 301 are 0.23 mm; two adjacent middle steel wires 201 are arranged at intervals, the interval is 0.05mm, two adjacent outer winding steel wires 301 are arranged at intervals, and the interval is 0.1 mm; the interval sets up between inlayer thigh 1 and the middle thigh 2, and the interval size is 0.05mm, the interval sets up between outer thigh 3 and the middle thigh 2, and the interval size is 0.05 mm.
The detection proves that the diameter of the steel cord is 1.48mm, the breaking force is 3200N, the linear density is 8.89g/m, the adhesive force is 1250N, and the rubber coating rate is 90%.
Those of ordinary skill in the art will understand that: the utility model is not to be considered as limited to the specific embodiments thereof, but is to be understood as being modified in all respects, all changes and equivalents that come within the spirit and scope of the utility model.
Claims (6)
1. The utility model provides a steel cord for radial tire, steel cord includes inlayer thigh (1), middle thigh (2), outer thigh (3), inlayer thigh (1) is triangular distribution's core silk (101) including 3, middle thigh (2) are middle steel wire (201) around inlayer thigh (1) circular evenly distributed including 9, outer thigh (3) are outer steel wire (301) around middle thigh (2) circular evenly distributed including 15, its characterized in that, and the interval sets up between two adjacent middle steel wire (201), and the interval size is 0.05mm, and the interval sets up between two adjacent outer steel wire (301), and the interval size is 0.1 mm.
2. A steel cord for radial tires according to claim 1, characterized in that the inner ply (1) and the middle ply (2) are spaced apart by 0.05mm, and the outer ply (3) and the middle ply (2) are spaced apart by 0.05 mm.
3. A steel cord for radial tires according to claim 1, characterized in that the diameter D0 of the core wire (101), the diameter D1 of the middle steel wire (201), and the diameter D2 of the outer layer steel wire (301) satisfy the following relations: d0 is more than or equal to 0.21mm and less than or equal to 0.230mm, D1 is more than or equal to 0.21mm and less than or equal to 0.230mm, and D2 is more than or equal to 0.210mm and less than or equal to 0.230 mm.
4. A steel cord for radial tires according to claim 3, characterized by D2 ≦ D1 ≦ D0.
5. A steel cord for radial tires according to claim 4, characterized in that the diameters of the core wire (101), the middle wire (201), and the outer layer wire (301) are all 0.225 mm.
6. A steel cord for radial tires according to claim 1, characterized in that the twisting direction of the core wire (101), the middle steel wire (201) and the outer layer steel wire (301) is Z.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220232930.XU CN216786685U (en) | 2022-01-28 | 2022-01-28 | Steel cord for radial tire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220232930.XU CN216786685U (en) | 2022-01-28 | 2022-01-28 | Steel cord for radial tire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216786685U true CN216786685U (en) | 2022-06-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220232930.XU Active CN216786685U (en) | 2022-01-28 | 2022-01-28 | Steel cord for radial tire |
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| Country | Link |
|---|---|
| CN (1) | CN216786685U (en) |
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2022
- 2022-01-28 CN CN202220232930.XU patent/CN216786685U/en active Active
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