CN216107799U - Steel cord for engineering vehicle tire - Google Patents
Steel cord for engineering vehicle tire Download PDFInfo
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- CN216107799U CN216107799U CN202120288994.7U CN202120288994U CN216107799U CN 216107799 U CN216107799 U CN 216107799U CN 202120288994 U CN202120288994 U CN 202120288994U CN 216107799 U CN216107799 U CN 216107799U
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Abstract
The utility model provides a steel cord for an engineering vehicle tire, which comprises a core strand, six outer strands and an outer winding wire, wherein the six outer strands are uniformly distributed on the outer peripheral side of the core strand in a circular manner, the outer circumferences of the six outer strands are tangent to the outer circumference of the core strand, the outer circumferences of two adjacent outer strands are tangent to each other, and the outer winding wire is wound on the outer surfaces of the six outer strands; the core strand and the outer strand respectively comprise 3 inner layer steel wires, 9 middle layer steel wires and 15 outer layer steel wires, the 3 inner layer steel wires are in triangular mutual external tangent distribution, the 9 middle layer steel wires are circularly and uniformly distributed on the peripheral sides of the three inner layer steel wires, and the 15 outer layer steel wires are circularly and uniformly distributed on the peripheral sides of the 6 middle layer steel wires; the twisting direction of the 6 outer layer strands around the core strand is left twisting, and the twisting direction of the outer winding wires is right twisting. The steel cord disclosed by the utility model has the advantages that the diameter of the steel cord is reduced while the performance of the finished product meets the national standard requirement, so that the weight of the tire is reduced, the safety performance of the tire is improved, and the production cost is reduced.
Description
Technical Field
The utility model belongs to the technical field of steel cord production, and particularly relates to a steel cord for an engineering vehicle tire.
Background
With the rapid development of global economy, the demand for resources such as steel, coal and the like is greatly increased, the number of large engineering vehicles used in mine operation is increasing day by day, and the demand for corresponding large engineering tires is also continuously increased.
Compared with a light truck wheel, a large engineering tire needs a larger bearing capacity, so that a 7x (3+9+15x0.22) +0.20HT steel cord is commonly used for a tire body and a belted layer at present, and the steel cord has the advantages of thicker diameter, large tire mass and low safety performance; in addition, the diameter of the steel cord is large, which is not beneficial to production and increases cost.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problems, the utility model discloses a high-strength steel cord with an external winding wire, which has the advantages of stable structure, high strength and good fatigue resistance.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a steel cord for an engineering vehicle tire comprises a core strand, six outer layer strands and an outer winding wire, wherein the six outer layer strands are uniformly distributed on the outer peripheral side of the core strand in a circular shape, and the outer winding wire is wound on the outer surfaces of the six outer layer strands; the core strand and the outer layer strand respectively comprise 3 inner layer steel wires, 9 middle layer steel wires and 15 outer layer steel wires, wherein the 3 inner layer steel wires are distributed in a triangular shape, the 9 middle layer steel wires are circularly and uniformly distributed on the peripheral sides of the three inner layer steel wires, and the 15 outer layer steel wires are circularly and uniformly distributed on the peripheral sides of the 6 middle layer steel wires; the twisting direction of the 6 strands of outer layer strands around the core strand is left twisting, and the twisting direction of the outer winding yarns around the 6 strands of outer layer strands is right twisting.
Furthermore, in the core strand, the twisting direction of 3 inner layer steel wires is left twist, the twisting direction of 9 middle layer steel wires is left twist, and the twisting direction of 15 outer layer steel wires is left twist.
Furthermore, in the outer layer strand, the twisting direction of 3 inner layer steel wires is right-hand twist, the twisting direction of 9 middle layer steel wires is right-hand twist, and the twisting direction of 15 outer layer steel wires is right-hand twist.
Furthermore, the diameters of the inner layer steel wire, the middle layer steel wire and the outer layer steel wire in the core strand and the outer layer strand are A, B and C respectively, A is more than or equal to 0.095mm and less than or equal to 0.183mm, B is more than or equal to 0.095mm and less than or equal to 0.183mm, and C is more than or equal to 0.095mm and less than or equal to 0.183 mm; the diameter of the outer winding wire is D, and D is 0.20 mm.
Further, the diameter A of the inner layer steel wire is 0.180mm, the diameter B of the middle layer steel wire is 0.180mm, and the diameter C of the outer layer steel wire is 0.180 mm.
Furthermore, in the core strand and the outer layer strand, the lay length of the inner layer steel wire is E, E is more than or equal to 4.70mm and less than or equal to 5.30mm, the lay length of the middle layer steel wire is F, F is more than or equal to 9.5mm and less than or equal to 10.5mm, the lay length of the outer layer steel wire is G, and G is more than or equal to 15.0mm and less than or equal to 17.0 mm.
Furthermore, the lay length of the outer layer strand is H, H is more than or equal to 36mm and less than or equal to 40mm, the lay length of the outer winding is I, and I is more than or equal to 4.75mm and less than or equal to 5.25 mm.
Further, the diameter of the steel cord is J, and J is more than or equal to 3.25mm and less than or equal to 3.45 mm.
The utility model discloses a preparation process flow of a steel cord for an engineering vehicle tire, which comprises the following steps: the wire rod special for the steel cord is generally adopted, wherein the wire rod is subjected to controlled cooling and sorbitizing of phi 5.5, the wire rod after qualified in-factory inspection is subjected to surface treatment, rough drawing is carried out, the wire rod is drawn to phi 2.2-2.8 mm, then primary normalizing treatment is carried out to eliminate work hardening, then the wire rod is subjected to middle drawing, drawn to phi O.8-1.6 mm, then lead bath isothermal quenching is carried out, brass is electroplated to obtain the required mechanical property, metallographic structure and coating quality, then wet drawing is carried out to phi 0.15-0.38 mm, and finally stranding, rope forming, external winding, rewinding inspection and finished product inspection are carried out until packaging and warehousing are carried out.
The steel cord for the engineering vehicle tire disclosed by the utility model has the advantages that the diameter of the steel cord is reduced while the performance of the finished product is ensured to meet the national standard requirements, so that the mass of the tire is reduced, and the safety performance of the tire is improved; compared with 3x (3+9+15x0.22) +0.20HT steel cords, the excessive tire bearing capacity is converted into the reduction of tire quality, so that the waste is reduced, and the production cost is reduced.
Drawings
Fig. 1 is a schematic structural view of a steel cord for a tire of a construction vehicle according to the present invention.
Wherein, 1-core strand, 2-outer layer strand, 3-inner layer steel wire, 4-middle layer steel wire, 5-outer layer steel wire and 6-outer winding 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 tire of a construction vehicle as shown in fig. 1, the steel cord comprising a core strand, six outer layer strands circularly and uniformly distributed on the outer circumferential side of the core strand, and an outer wrap filament wound around the outer surfaces of the six outer layer strands; the core strand and the outer layer strand respectively comprise 3 inner layer steel wires, 9 middle layer steel wires and 15 outer layer steel wires, wherein the 3 inner layer steel wires are distributed in a triangular shape, the 9 middle layer steel wires are circularly and uniformly distributed on the peripheral sides of the three inner layer steel wires, and the 15 outer layer steel wires are circularly and uniformly distributed on the peripheral sides of the 6 middle layer steel wires; the twisting direction of the 6 strands of outer layer strands around the core strand is left twisting, and the twisting direction of the 6 strands of outer layer strands around the outer winding wires is right twisting; in the core strand, the twisting direction of 3 inner layer steel wires is left twist, the twisting direction of 9 middle layer steel wires is left twist, and the twisting direction of 15 outer layer steel wires is left twist; in the outer layer strand, the twisting direction of 3 inner layer steel wires is right twist, the twisting direction of 9 middle layer steel wires is right twist, and the twisting direction of 15 outer layer steel wires is right twist.
The diameters of the inner layer steel wire, the middle layer steel wire and the outer layer steel wire in the core strand and the outer layer strand are the same, A, B and C are provided respectively, A is 0.095mm, B is 0.095mm, and C is 0.095 mm; the diameter of the outer winding wire is D, and D is 0.200 mm.
In the core strand and the outer layer strand, the lay length E of the inner layer steel wire is 4.75mm, the lay length F of the middle layer steel wire is 9.5mm, and the lay length G of the outer layer steel wire is 15.2 mm; the lay length H of the outer layer strand is 36mm, and the lay length I of the outer winding wire is 4.75 mm; the diameter J of the steel cord is 3.25mm, the breaking force is 10080N, the linear density is 36.19g/m, the adhesive force is 1872N, and the rubber coating rate is 90%.
Example 2
A steel cord for a tire of a construction vehicle as shown in fig. 1, the steel cord comprising a core strand, six outer layer strands circularly and uniformly distributed on the outer circumferential side of the core strand, and an outer wrap filament wound around the outer surfaces of the six outer layer strands; the core strand and the outer layer strand respectively comprise 3 inner layer steel wires, 9 middle layer steel wires and 15 outer layer steel wires, wherein the 3 inner layer steel wires are distributed in a triangular shape, the 9 middle layer steel wires are circularly and uniformly distributed on the peripheral sides of the three inner layer steel wires, and the 15 outer layer steel wires are circularly and uniformly distributed on the peripheral sides of the 6 middle layer steel wires; the twisting direction of the 6 strands of outer layer strands around the core strand is left twisting, and the twisting direction of the 6 strands of outer layer strands around the outer winding wires is right twisting; in the core strand, the twisting direction of 3 inner layer steel wires is left twist, the twisting direction of 9 middle layer steel wires is left twist, and the twisting direction of 15 outer layer steel wires is left twist; in the outer layer strand, the twisting direction of 3 inner layer steel wires is right twist, the twisting direction of 9 middle layer steel wires is right twist, and the twisting direction of 15 outer layer steel wires is right twist.
The diameters of the inner layer steel wire, the middle layer steel wire and the outer layer steel wire in the core strand and the outer layer strand are the same and are all 0.183 mm; the diameter of the outer winding wire is D, and D is 0.200 mm.
In the core strand and the outer layer strand, the lay length E of the inner layer steel wire is 5.25mm, the lay length F of the middle layer steel wire is 10.5mm, and the lay length G of the outer layer steel wire is 16.8 mm; the lay length H of the outer layer strand is 40mm, and the lay length I of the outer winding wire is 5.25 mm; the diameter J of the steel cord is 345mm, the breaking force is 11200N, the linear density is 37.9g/m, the adhesive force is 2425N, and the coating rate is 90%.
Example 3
A steel cord for a tire of a construction vehicle as shown in fig. 1, the steel cord comprising a core strand, six outer layer strands circularly and uniformly distributed on the outer circumferential side of the core strand, and an outer wrap filament wound around the outer surfaces of the six outer layer strands; the core strand and the outer layer strand respectively comprise 3 inner layer steel wires, 9 middle layer steel wires and 15 outer layer steel wires, wherein the 3 inner layer steel wires are distributed in a triangular shape, the 9 middle layer steel wires are circularly and uniformly distributed on the peripheral sides of the three inner layer steel wires, and the 15 outer layer steel wires are circularly and uniformly distributed on the peripheral sides of the 6 middle layer steel wires; the twisting direction of the 6 strands of outer layer strands around the core strand is left twisting, and the twisting direction of the 6 strands of outer layer strands around the outer winding wires is right twisting; in the core strand, the twisting direction of 3 inner layer steel wires is left twist, the twisting direction of 9 middle layer steel wires is left twist, and the twisting direction of 15 outer layer steel wires is left twist; in the outer layer strand, the twisting direction of 3 inner layer steel wires is right twist, the twisting direction of 9 middle layer steel wires is right twist, and the twisting direction of 15 outer layer steel wires is right twist.
The diameters of the inner layer steel wire, the middle layer steel wire and the outer layer steel wire in the core strand and the outer layer strand are the same and are all 0.18 mm; the diameter of the outer winding wire is D, and D is 0.200 mm.
In the core strand and the outer layer strand, the lay length E of the inner layer steel wire is 5mm, the lay length F of the middle layer steel wire is 10 mm, and the lay length G of the outer layer steel wire is 16 mm; the lay length H of the outer layer strand is 38mm, and the lay length I of the outer winding wire is 5 mm; the diameter J of the steel cord is 3.42mm, the breaking force is 11470N, the linear density is 37.5g/m, the adhesive force is 2325N, 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 steel cord for the engineering vehicle tire is characterized by comprising a core strand, six outer layer strands and an outer winding wire, wherein the six outer layer strands are uniformly distributed on the outer peripheral side of the core strand in a circular shape, and the outer winding wire is wound on the outer surfaces of the six outer layer strands; the core strand and the outer strand respectively comprise 3 inner layer steel wires, 9 middle layer steel wires and 15 outer layer steel wires, wherein the 3 inner layer steel wires are in triangular mutual circumscribed distribution, the 9 middle layer steel wires are circularly and uniformly distributed on the peripheral sides of the three inner layer steel wires, and the 15 outer layer steel wires are circularly and uniformly distributed on the peripheral sides of the 6 middle layer steel wires; the twisting direction of the six outer layer strands around the core strand is left twisting, and the twisting direction of the outer winding yarns around the six outer layer strands is right twisting; the diameters of the inner layer steel wire, the middle layer steel wire and the outer layer steel wire in the core strand and the outer layer strand are A, B and C respectively, the diameter A of the inner layer steel wire is 0.180mm, the diameter B of the middle layer steel wire is 0.180mm, the diameter C of the outer layer steel wire is 0.180mm, and the diameter D of the outer winding wire is 0.20 mm.
2. A steel cord for a tire of a construction vehicle according to claim 1, wherein in said core strand, the twisting direction of 3 inner layer steel wires is left twist, the twisting direction of 9 middle layer steel wires is left twist, and the twisting direction of 15 outer layer steel wires is left twist.
3. A steel cord for a tire of a construction vehicle according to claim 2, wherein in said outer layer strand, the twisting direction of 3 inner layer steel wires is right twist, the twisting direction of 9 middle layer steel wires is right twist, and the twisting direction of 15 outer layer steel wires is right twist.
4. The steel cord for a tire of engineering vehicles according to claim 1, wherein in the core strand and the outer layer strand, the lay length of the inner layer steel wires is E, 4.70 mm. ltoreq. E.ltoreq.5.30 mm, the lay length of the middle layer steel wires is F, 9.5 mm. ltoreq. F.ltoreq.10.5 mm, the lay length of the outer layer steel wires is G, 15.0 mm. ltoreq. G.ltoreq.17.0 mm.
5. A steel cord for a tyre for engineering vehicles according to claim 1, characterized in that the lay length of the outer layer strands is H, 36mm ≦ H ≦ 40mm, the lay length of the outer windings is I, 4.75mm ≦ I ≦ 5.25 mm.
6. A steel cord for a tyre for engineering vehicles according to claim 1, characterized in that the diameter of the steel cord is J, J3.25 mm 3.45 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120288994.7U CN216107799U (en) | 2021-02-02 | 2021-02-02 | Steel cord for engineering vehicle tire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120288994.7U CN216107799U (en) | 2021-02-02 | 2021-02-02 | Steel cord for engineering vehicle tire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216107799U true CN216107799U (en) | 2022-03-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120288994.7U Active CN216107799U (en) | 2021-02-02 | 2021-02-02 | Steel cord for engineering vehicle tire |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216107799U (en) |
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2021
- 2021-02-02 CN CN202120288994.7U patent/CN216107799U/en active Active
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