CN210283792U - All-steel radial tire with high mileage - Google Patents
All-steel radial tire with high mileage Download PDFInfo
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- CN210283792U CN210283792U CN201822038029.5U CN201822038029U CN210283792U CN 210283792 U CN210283792 U CN 210283792U CN 201822038029 U CN201822038029 U CN 201822038029U CN 210283792 U CN210283792 U CN 210283792U
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Abstract
The utility model discloses an all-steel radial tire with high mileage, which comprises a tire shoulder and a tire tread, wherein the tire tread profile is of a two-section structure, and a relation that TDW/SW is more than or equal to 0.68 and less than or equal to 0.83 exists between the tire tread width TDW and the tire section width SW; the tire tread is divided into a first crown arc and a second crown arc in sequence from the intersection point a of the tire equatorial plane CL and the tire tread profile to the initial point b of the tire shoulder on the section of the tire meridian. The utility model solves the problem that the shoulder part of the tire deforms too much in the running process of the tire, controls the smooth transition of the first section crown arc and the second section crown arc by improving the design of the shape of the tire tread, and ensures the even distribution of the stress of the tire in the grounding process; and meanwhile, the critical dimensions H1, H2 and H3 of the tire crown to tire inner contour are controlled, so that the sufficient shoulder growth of the tire is ensured when the tire is inflated, and the driving mileage of the tire is finally improved.
Description
Technical Field
The utility model relates to the technical field of tires, specifically an all-steel radial tire of high mileage.
Background
With the governance of the state to the phenomenon of excess passengers in the passenger transport market in recent years, the potential safety hazard caused by the overlarge tire load rate of passenger transport vehicles is relieved, but with the reduction of the load rate of tires, the grounding shape and the grounding stress of the tires are correspondingly changed, and the grounding condition of the tires is closely related to the abrasion performance of the tires. In the case of insufficient tire load rates currently on the market, this results in a tire with a shoulder footprint shorter than the center footprint, which is very detrimental to tire wear.
At present, in order to solve the problem of tire abrasion, most tire manufacturers generally adopt the thickness of the shoulder part to be improved, or the width of a tire belt layer is shortened to improve the abrasion performance of the shoulder part, so that the length of a shoulder part footprint of the tire is increased. However, increasing the thickness of the tire shoulder can cause excessive material of the shoulder, increase heat generation, be unfavorable for the safety of the tire and increase the production cost of the tire; shortening the width of the tire belt reduces the rigidity of the tire crown shoulder, so that the tire shoulder deforms too much in the driving process, the economy and the safety of the tire are adversely affected, and the driving mileage of the tire is affected.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an all steel radial tire of high mileage to solve the problem that proposes in the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
the all-steel radial tire with high mileage comprises a tire shoulder and a tire tread, wherein the tire tread profile is of a two-section structure, and the relationship that TDW/SW is more than or equal to 0.68 and less than or equal to 0.83 exists between the tire tread width TDW and the tire section width SW;
the tire tread is divided into a first crown arc and a second crown arc in sequence from the intersection point a of the tire equatorial plane CL and the tire tread profile to the initial point b of the tire shoulder on the section of the tire meridian;
the horizontal width L1 of the first section of crown arc and the horizontal width L2 of the second section of crown arc have the relation that L2/L1 are more than or equal to 1.23 and less than or equal to 1.49, and the horizontal width L1 of the first section of crown arc and the tread width TDW have the relation that L1/TDW is more than or equal to 0.39 and less than or equal to 0.46.
As a further aspect of the present invention: the outer diameter R1 of the first section of crown arc and the outer diameter R2 of the second section of crown arc have the relation of R2/R1 being more than or equal to 0.78 and more than or equal to 0.64.
As a further aspect of the present invention: the vertical distance from the intersection point a of the tire equatorial plane CL and the tread outline to the tire inner outline is H1, the vertical distance from the central point c of the first section of crown arc and the second section of crown arc to the tire inner outline is H2, and the vertical distance from the initial point b of the tire shoulder to the tire inner outline is H3; the H1: h2: h3 equals 32.9: 33.7: 43.2, the fluctuation is within a range of + -1.5.
As a further aspect of the present invention: the vertical distance H1 from the intersection point a of the tire equatorial plane CL and the tread outline to the tire inner outline, and the vertical distance H2 from the central point c of the first section crown arc and the second section crown arc to the tire inner outline have the relation of 0.87 to H1/H2 to 0.97.
As a further aspect of the present invention: the center points of the first crown arc and the second crown arc are in the relation that the vertical distance H2 from c to the inner contour of the tire and the vertical distance H3 from the starting point b of the tire shoulder to the inner contour of the tire have the value of H2/H3 which is more than or equal to 0.70.
As a further aspect of the present invention: the tire tread is provided with more than four circumferential main grooves extending along the circumferential direction of the tire.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the tread of the tire is provided in a two-segment configuration comprising only a first segment crown arc and a second segment crown arc, and the relation between the tread width TDW and the tire section width SW is more than or equal to 0.68 and less than or equal to TDW/SW and less than or equal to 0.83, the relation between the horizontal width L1 of the first section of crown arc and the horizontal width L2 of the second section of crown arc is more than or equal to 1.23 and less than or equal to L2/L1 and less than or equal to 1.49, the relation between the horizontal width L1 of the first section of crown arc and the tread width TDW is more than or equal to 0.39 and less than or equal to L1/TDW and less than or equal to 0.46, thereby realizing the reasonable distribution of the widths of the first section, further realizing reasonable distribution of the whole tire tread material, ensuring that the shoulder part of the tire can grow enough when the tire is inflated, further realizing that the tire can run in the running process, the deformation amount of the shoulder part is controlled within a reasonable range, and the uniform distribution of the tire grounding pressure is ensured, so that the uniform abrasion of the tire is ensured, and the driving mileage of the tire is greatly improved;
2. the ratio of the outer diameter R1 of the first section of crown arc and the outer diameter R2 of the second section of crown arc of the tire tread is controlled to be more than or equal to 0.64 and less than or equal to R2/R1 and less than or equal to 0.78, so that the crown arcs at two ends of the tire tread can be in smooth transition, the phenomenon of stress concentration of the tire in the driving process due to the uneven transition between the two sections of crown arcs of the tire tread is avoided, the smooth transition of the crown arcs at two ends is ensured, the service life of the tire can be greatly prolonged, and the driving mileage of the tire is further improved;
3. by defining the tire tread H1: h2: h3 ═ 32.9: 33.7: 43.2, the fluctuation is +/-1.5, the smooth transition of the tire tread profile can be further ensured, the uniform distribution of the ground contact stress of the tire and the uniform abrasion of the tire in the running process are ensured, and the service life of the tire is prolonged;
4. by controlling the proportional relation of H1/H2 in the range of 0.87-0.97, the proportional relation of H2/H3 in the range of 0.70-0.78 or simultaneously controlling the proportional relation of H1/H2 and the proportional relation of H2/H3 in the respective ranges, the shoulder part of the tire can be prevented from expanding unevenly when inflated, and further, the stress distribution of the tire is uniform during running when the tire runs, particularly under the condition of insufficient load rate;
5. the whole all-steel radial tire with high mileage limits the functional relation among R1, R2, L1, L2 and TDW by changing the outline shape of the tire surface, realizes the design of the tire surface shape, controls the smooth transition of a first section crown arc and a second section crown arc, and ensures the uniform distribution of the stress of the tire in the grounding process; meanwhile, the key sizes H1, H2 and H3 from the crown part to the inner contour of the tire are controlled, so that the shoulder part of the tire can grow sufficiently when the tire is inflated, the ground contact stress of the tire is uniformly distributed in the running process, abnormal abrasion of the tire in the running process, particularly under the condition of insufficient load rate, is avoided, the service life of the tire is prolonged, and the running mileage of the tire is finally improved.
Drawings
FIG. 1 is a partial cross-sectional view of the high mileage all-steel radial tire of the present invention;
FIG. 2 is a ground contact profile of the tire of the present invention at 80% load;
FIG. 3 is a ground contact profile of a conventional tire at 80% load;
FIG. 4 is a ground contact profile of the tire of the present invention at 100% load;
fig. 5 is a ground contact shape diagram of a conventional tire at 100% load.
In the figure: 1-tire shoulder, 2-tire tread profile, 21-first section crown arc, 22-second section crown arc, 3-tire inner profile and 4-circumferential main groove.
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.
Referring to fig. 1, a high-mileage all-steel radial tire comprises a tire shoulder 1 and a tread, wherein the tread profile 2 has a two-segment structure, and a relationship of TDW/SW between the tread width TDW and the tire section width SW is more than or equal to 0.68 and less than or equal to 0.83; the tire tread is divided into a first crown arc 21 and a second crown arc 22 in sequence from the intersection point a of the tire equatorial plane CL and the tire tread profile 2 to the initial point b of the tire shoulder 1 on the section of the tire meridian;
the horizontal width L1 of the first section of crown arc 21 and the horizontal width L2 of the second section of crown arc 22 have the relation that L2/L1 is more than or equal to 1.23 and less than or equal to 1.49, and the horizontal width L1 of the first section of crown arc 21 and the tread width TDW have the relation that L1/TDW is more than or equal to 0.39 and less than or equal to 0.46.
By changing the tread profile 2 of the tire, the tread profile 2 of the tire is set to only comprise a first section of crown arc 21 and a second section of crown arc 22, a relation that L2/L1 is more than or equal to 1.23 and less than or equal to 1.49 exists between the horizontal width L1 of the first section of crown arc 21 and the horizontal width L2 of the second section of crown arc 22, and a relation that L1/TDW is more than or equal to 0.39 and less than or equal to 0.46 exists between the horizontal width L1 of the first section of crown arc 21 and the tread width TDW, so that the reasonable distribution of the widths of the first section of crown arc 21 and the second section of crown arc 22 of the tire is realized, the reasonable distribution of the tread material of the whole tire is realized, the shoulder of the tire can grow sufficiently when the tire is inflated, the deformation of the shoulder of the tire is controlled in a reasonable range during driving, and the uniform distribution.
Referring to fig. 2 and fig. 3, in the running process of the tire, when the load factor of the tire is reduced to 80%, compared with the tire of the conventional design, the footprint of the tire shoulder 1 is substantially the same as the footprint of the tire middle part, which indicates that the ground pressure distribution of the tire of the present invention is more uniform.
Further, the ground contact pressure when the load factor is reduced to 80% of the tire according to the present invention is compared with the tire conventionally designed in the prior art, please refer to the following table one:
through inciting somebody to action the utility model discloses a tire of design contrasts with the tire of conventional design, can see out, and the tire is at the in-process of traveling, the utility model discloses a tire average ground pressure is less than the ground pressure of tire under the conventional design, simultaneously, the utility model relates to a line of design tire carries standard deviation, shoulder pressure not enough degree and equally divides the line that does not be less than tire under the conventional design far away and carries standard deviation, shoulder pressure not enough degree.
Referring to fig. 4 and 5, in the running process of the tire, when the load factor of the tire is reduced to 100%, compared with the tire of the conventional design, the footprint of the tire shoulder 1 is substantially the same as the footprint of the tire middle part, and it can be known that the ground pressure distribution of the tire of the present invention is also more uniform than that of the tire of the conventional design.
Further, the ground contact pressure when the load factor is reduced to 100% of the tire according to the present invention is compared with the tire conventionally designed in the prior art, please refer to the following table two:
through inciting somebody to action the utility model discloses a tire of design contrasts with the tire of conventional design, can see out, and the tire is at the in-process of traveling, the utility model relates to a tire average ground pressure is less than the ground pressure of tire under the conventional design, simultaneously, the utility model relates to a standard deviation is carried on the line of tire also is less than the standard deviation is carried on the line of tire under the conventional design, and the utility model relates to a shoulder pressure of scheme tire is not enough degree is less than the shoulder pressure of tire under the conventional design far away.
To sum up, through set the tread of tire to the structure that only includes both ends crown arc, and make and exist the relation that L2/L1 is less than or equal to 1.49 that 1.23 is less than or equal to between the horizontal width L1 of first section crown arc 21 and the horizontal width L2 of second section crown arc 22, there is 0.39 between the horizontal width L1 of first section crown arc 21 and the tread width TDW and is less than or equal to L1/TDW and is less than or equal to 0.46's relation, make the utility model discloses a tire compares with the tire of current conventional design, the utility model discloses a tire ground pressure distributes more evenly.
When the proportional relation between the horizontal widths of the first crown arc and the second crown arc and the proportional relation between the widths of the two crown arcs and the tread are exceeded, the ground contact stress distribution of the tire is not uniform enough, the phenomenon that the abrasion between the middle part of the tire and the shoulder part of the tire is not synchronous is caused, and the abnormal abrasion such as uneven abrasion of the tire is caused. And ultimately results in a reduction in the overall range of the tire.
The tire tread is arranged to be a structure only comprising two end crown arcs, so that the relation that the horizontal width L1 of the first section crown arc 21 and the horizontal width L2 of the second section crown arc 22 are more than or equal to 1.23 and less than or equal to L2/L1 and less than or equal to 1.49, and the relation that the horizontal width L1 of the first section crown arc 21 and the tread width TDW are more than or equal to 0.39 and less than or equal to L1/TDW and less than or equal to 0.46 exist, and the relation that the length of the footprint of the shoulder part is more than or equal to 0.97 and less than or equal to/the length of the footprint of the middle part is less than or equal to 1.03 can be realized between the length of the footprint of the tire shoulder part 1 and.
The outer diameter R1 of the first section crown arc 21 and the outer diameter R2 of the second section crown arc 22 have the relation of R2/R1 being more than or equal to 0.78 and more than or equal to 0.64.
The tire tread profile 2 of the tire is set to be a structure only comprising a first section of crown arc 21 and a second section of crown arc 22, and the relation that R2/R1 is more than or equal to 0.64 and less than or equal to 0.78 exists between the outer diameter R1 of the first section of crown arc 21 and the outer diameter R2 of the second section of crown arc 22, so that smooth transition can be realized between the crown arcs at two ends of the tire tread of the tire, the phenomenon of stress concentration of the tire in the driving process due to uneven transition between the two sections of crown arcs of the tire tread is avoided, the local pressure of the tire in the driving process is overlarge, the abrasion of the tire is accelerated, the outer diameter ratio between the crown arcs at two ends of the tire is controlled to be 0.64-0.78, the smooth transition of the crown arcs at two ends of the tire is ensured, the service life of the.
The vertical distance from the intersection point a of the tire equatorial plane CL and the tread outline 2 to the tire inner outline 3 is H1, the vertical distance from the central point c of the first section of crown arc 21 and the second section of crown arc 22 to the tire inner outline 3 is H2, and the vertical distance from the starting point b of the tire shoulder 1 to the tire inner outline 3 is H3; the H1: h2: h3 equals 32.9: 33.7: 43.2, the fluctuation is within a range of + -1.5.
By defining the tire tread H1: h2: h3 ═ 32.9: 33.7: 43.2, and the fluctuation is within +/-1.5, can further ensure the smooth transition of the tire tread profile 2, guarantee the even distribution of the ground contact stress of the tire, the even wear of the tire in the running process, have lengthened the service life of the tire.
The vertical distance H1 from the intersection point a of the tire equatorial plane CL and the tread contour 2 to the tire inner contour 3 and the vertical distance H2 from the central point c of the first section crown arc 21 and the second section crown arc 22 to the tire inner contour 3 have the relation of H1/H2 being more than or equal to 0.87 and less than or equal to 0.97.
The central points of the first crown arc 21 and the second crown arc 22 are the vertical distance H2 from c to the inner contour 3 of the tire, and the vertical distance H3 from the starting point b of the tire shoulder 1 to the inner contour 3 of the tire has the relation of H2/H3 being more than or equal to 0.70.
By controlling the proportional relation of H1/H2, the proportional relation of H2/H3 or the proportional relation of H1/H2 and H2/H3 within a reasonable range, the shoulder part of the tire can be ensured to expand uniformly when inflated, and further, the uniform distribution of the ground contact stress of the tire and the uniform abrasion of the tire in the running process are ensured.
When the proportional relation of H1/H2 exceeds the range of 0.87-0.97, or the proportional relation of H2/H3 exceeds the range of 0.70-0.78, or the proportional relation of H1/H2 and H2/H3 simultaneously exceeds the respective ranges, the shoulder part of the tire is not uniformly expanded when inflated, the shoulder part 1 of the tire is not sufficiently grown, furthermore, the footprint of the shoulder part 1 of the tire is smaller than that of the middle part of the tire during the running process of the tire, particularly under the condition of insufficient load rate, the stress distribution of the tire during the running process is not uniform, abnormal wear occurs, and the running mileage of the tire is finally influenced.
The tread is provided with more than four circumferential main grooves 4 extending along the circumferential direction of the tire.
The axial main groove arranged on the tire tread is mainly used for draining water in rainy days, and meets the requirements of the wheel platform during running in rainy days.
According to the technical solution provided by the utility model, the utility model discloses a change 2 shapes of tread profile, inject the functional relation between R1, R2, L1, L2, the TDW, realize the design to tread shape, control the smooth transition of first section crown arc and second section crown arc, guarantee that the distribution of tire stress in ground connection process is even. Meanwhile, the key sizes H1, H2 and H3 from the crown part to the inner contour of the tire are controlled, so that the shoulder part of the tire can grow sufficiently when the tire is inflated, the ground contact stress of the tire is uniformly distributed in the running process, abnormal abrasion of the tire in the running process, particularly under the condition of insufficient load rate, is avoided, the service life of the tire is prolonged, and the running mileage of the tire is finally improved.
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.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (6)
1. The utility model provides an all steel radial tire of high mileage, includes shoulder (1) and tread, its characterized in that: the tread profile (2) is of a two-section structure, and the relationship of TDW/SW between the tread width TDW and the tire section width SW is more than or equal to 0.68 and less than or equal to 0.83;
the tire tread is divided into a first crown arc section (21) and a second crown arc section (22) in sequence from the intersection point a of the tire equatorial plane CL and the tire tread profile (2) to the tire crown profile of the starting point b of the tire shoulder (1) on the section of the tire meridian;
the horizontal width L1 of the first section of crown arc (21) and the horizontal width L2 of the second section of crown arc (22) have the relation of 1.23-1.49, L2/L1-1.49, and the horizontal width L1 of the first section of crown arc (21) and the tread width TDW have the relation of 0.39-0. 1/TDW-0.46.
2. The high-mileage all-steel radial tire according to claim 1, characterized in that: the outer diameter R1 of the first section of crown arc (21) and the outer diameter R2 of the second section of crown arc (22) have the relation of R2/R1 being less than or equal to 0.78.
3. The high-mileage all-steel radial tire according to claim 1, characterized in that: the vertical distance from the intersection point a of the tire equatorial plane CL and the tread profile (2) to the tire inner profile (3) is H1, the vertical distance from the central point c of the first section of crown arc (21) and the second section of crown arc (22) to the tire inner profile (3) is H2, and the vertical distance from the starting point b of the tire shoulder (1) to the tire inner profile (3) is H3; the H1: h2: h3 equals 32.9: 33.7: 43.2, the fluctuation is within a range of + -1.5.
4. The high-mileage all-steel radial tire according to claim 3, characterized in that: the vertical distance H1 from the intersection point a of the tire equatorial plane CL and the tread profile (2) to the tire inner profile (3) and the vertical distance H2 from the central point c of the first section crown arc (21) and the second section crown arc (22) to the tire inner profile (3) have the relation of H1/H2 being more than or equal to 0.87 and less than or equal to 0.97.
5. The high-mileage all-steel radial tire according to claim 3 or 4, characterized in that: the center points of the first section of crown arc (21) and the second section of crown arc (22) are in the vertical distance H2 from c to the inner contour (3) of the tire, and the vertical distance H3 from the starting point b of the tire shoulder (1) to the inner contour (3) of the tire has the relation of H2/H3 being more than or equal to 0.78.
6. The high-mileage all-steel radial tire according to claim 1, characterized in that: the tire tread is provided with more than four circumferential main grooves (4) extending along the circumferential direction of the tire.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201822038029.5U CN210283792U (en) | 2018-12-04 | 2018-12-04 | All-steel radial tire with high mileage |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201822038029.5U CN210283792U (en) | 2018-12-04 | 2018-12-04 | All-steel radial tire with high mileage |
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| CN210283792U true CN210283792U (en) | 2020-04-10 |
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| CN201822038029.5U Active CN210283792U (en) | 2018-12-04 | 2018-12-04 | All-steel radial tire with high mileage |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109501523A (en) * | 2018-12-04 | 2019-03-22 | 安徽佳通乘用子午线轮胎有限公司 | A kind of all-steel radial tyre of high mileage |
| CN114312147A (en) * | 2022-01-27 | 2022-04-12 | 青岛双星轮胎工业有限公司 | Tire outer contour design method |
| CN114132123B (en) * | 2021-11-17 | 2023-10-27 | 安徽佳通乘用子午线轮胎有限公司 | Load radial tire with low rolling resistance |
-
2018
- 2018-12-04 CN CN201822038029.5U patent/CN210283792U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109501523A (en) * | 2018-12-04 | 2019-03-22 | 安徽佳通乘用子午线轮胎有限公司 | A kind of all-steel radial tyre of high mileage |
| CN114132123B (en) * | 2021-11-17 | 2023-10-27 | 安徽佳通乘用子午线轮胎有限公司 | Load radial tire with low rolling resistance |
| CN114312147A (en) * | 2022-01-27 | 2022-04-12 | 青岛双星轮胎工业有限公司 | Tire outer contour design method |
| CN114312147B (en) * | 2022-01-27 | 2024-03-01 | 青岛双星轮胎工业有限公司 | Tire outer contour design method |
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