CN111382478B - Design method of tire with controllable ground pressure distribution - Google Patents
Design method of tire with controllable ground pressure distribution Download PDFInfo
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- CN111382478B CN111382478B CN202010141636.3A CN202010141636A CN111382478B CN 111382478 B CN111382478 B CN 111382478B CN 202010141636 A CN202010141636 A CN 202010141636A CN 111382478 B CN111382478 B CN 111382478B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
Abstract
The invention relates to the technical field of tire structure design, in particular to a design method of a tire with controllable ground pressure distribution. A design method of a tire with controllable ground contact pressure distribution comprises a 1# belt ply, a 2# belt ply, a 3# belt ply and a 0-degree belt ply which are arranged on a carcass ply; the method is characterized in that after the overall layout design of the tire is completed, the width, the angle and the expansion rate of the 1# belt ply, the 2# belt ply and the 3# belt ply are adjusted in the construction design to control the ground contact pressure distribution shape of the final finished tire. The required grounding pressure distribution shape can be designed only by using a normal construction method. If the distribution shape of the grounding pressure needs to be changed, the influence factor of the design of the belted layer in construction can be adjusted, and the method is simple and controllable.
Description
Technical Field
The invention relates to the technical field of tire structure design, in particular to a design method of a tire with controllable ground pressure distribution.
Background
The tire is the only ground contact part of car, and the matching of tire, road surface and car chassis forms the car various performance, and tire performance is crucial to car research analysis. The influence factors of the tire performance are more, wherein the ground contact pressure distribution of the tire is particularly critical, and the ground contact pressure distribution plays an important role in the structural design of the tire. The distribution of the ground contact pressure of the tire can directly influence the wear resistance, the rolling resistance, the steering stability, the noise and the like of the tire, and is the basis for researching various performances of the tire. However, the distribution of the ground contact pressure of the tire is influenced by a plurality of factors, and the inner and outer profiles, the belt layer, the tire body, the shape of the semi-finished product, the pattern and the like in the tire structure have great influence on the distribution, so that the manufacture of the tire with controllable distribution of the ground contact pressure is very difficult.
Chinese patent (CN 101187955B) discloses a tire section designing method using belt bending, which can reflect not only the ground contact shape and the distribution of ground contact pressure of the entire tire but also the ground contact shape and the distribution of ground contact pressure of each tread block in advance, using a tire section designing method guiding belt bending. The method reported in this patent can design the expected tire ground contact pressure distribution, but the design is the whole cross section, and the influence factors include the outer contour, the belt layer, the carcass, the semi-finished product, the pattern and the like, if the ground contact pressure distribution shape needs to be changed, the mold, the semi-finished product shape, the pattern, the belt layer bending shape and the like need to be redesigned, wherein the control factor is the belt layer bending shape. In the case of all-steel radial tires, the tire belts are required to be as flat as possible, the curved belts cause the tire to deteriorate, and how the belts are curved is an uncontrollable factor in the normal manufacturing construction of the tire.
Disclosure of Invention
In view of the problems in the background art, the invention provides a design method of a tire with controllable ground contact pressure distribution, and a required ground contact pressure distribution shape can be designed only by using a normal construction method. If the distribution shape of the grounding pressure needs to be changed, the influence factor of the design of the belted layer in construction can be adjusted, and the method is simple and controllable.
In order to realize the purpose, the invention is realized by the following technical scheme:
a design method of a tire with controllable ground contact pressure distribution comprises a 1# belt ply, a 2# belt ply, a 3# belt ply and a 0-degree belt ply which are arranged on a carcass ply; after the overall layout design of the tire is finished, the width, the included angle with a tire body and the expansion rate of a 1# belted layer, a 2# belted layer and a 3# belted layer are adjusted in the construction design to control the ground contact pressure distribution shape of the final finished tire.
Preferably, the distribution shape of the grounding pressure is judged by using a rectangle degree index L;
w1 is the width of a No. 1 belted layer, A1 is an included angle between the No. 1 belted layer and a tire body, E1 is the expansion rate of the No. 1 belted layer, and the vertical distance between the end point of the No. 1 belted layer and the center is not more than 2mm;
w2 is the width of a No. 2 belted layer, A2 is an included angle between the No. 2 belted layer and a tire body, E2 is the expansion rate of the No. 2 belted layer, and the vertical distance between the end point of the No. 2 belted layer and the center is not more than 3mm;
w3 is the width of A3 # belted layer, A3 is an included angle between the 3# belted layer and a tire body, and E3 is the expansion rate of the 3# belted layer;
b is the running surface width of the tire where the belt structure is located;
when L =0, the belt layer construction adjustment has no influence on the distribution shape of the tire grounding pressure; when L is larger than or equal to 0, the distribution shape of the tire grounding pressure can be changed to be square by the belt layer construction adjustment, and the effect is more obvious when the numerical value is larger; when L is less than or equal to 0, the tire grounding pressure distribution shape is rounded by the belt layer construction adjustment, and the effect is more obvious when the numerical value is larger.
The invention also provides a tire with controllable ground contact pressure distribution, which is designed by adopting the method.
The invention has the beneficial effects that:
by changing the belt width, angle and expansion ratio, the tendency of the ground contact pressure distribution shape of the tire to change can be predicted, and a tire satisfying a desired ground contact pressure distribution shape can be obtained. The design method can enlarge the influence of the belted layer on the tire grounding pressure distribution shape by adjusting the expansion rate of the belted layer and generate decisive influence on the belted layer, thereby realizing the controllable design of the tire grounding pressure distribution by only changing the construction of the belted layer on the premise of not changing other influencing factors.
Drawings
FIG. 1 is a schematic view of the belt structure of the tire of the present invention.
Fig. 2 shows the original ground pressure distribution.
FIGS. 3-7 show the results of ground contact pressure distributions for tires constructed according to the belt design methods of examples 1-5, respectively.
Detailed Description
The invention will be further described with reference to specific examples, but the scope of the invention is not limited thereto, and the effect of the invention will be illustrated by taking an all-steel radial tire of 12r22.5 specification as an example.
The tire belt layer shown in figure 1 adopts a 0-degree belt layer structure, the structure comprises a 1# belt layer 1, a 2# belt layer 1, a 3# belt layer 3 and a 0-degree belt layer 4 which are arranged on a carcass ply, the 1# belt layer 1 is laid above the carcass ply, the 2# belt layer 2 and the 3# belt layer 3 are sequentially laid above the 1# belt layer 1, the 0-degree belt layers 4 are respectively laid above two ends of the 2# belt layer 2 and two sides of the 3# belt layer 3, and the 0-degree belt layers 4 are of an upper layer structure and a lower layer structure.
The invention relates to a design method of a tire with controllable ground contact pressure distribution, which is characterized in that after the overall layout design of the tire is finished, the widths of a 1# belt ply, a 2# belt ply and a 3# belt ply, the included angle between the tire body and the expansion rate are adjusted in the construction design to control the ground contact pressure distribution shape of a finished tire.
The distribution shape of the grounding pressure is judged by adopting a rectangle degree index L;
w1 is the width of a No. 1 belted layer, A1 is an included angle between the No. 1 belted layer and a tire body, E1 is the expansion rate of the No. 1 belted layer, and the vertical distance between the end point of the No. 1 belted layer and the center is not more than 2mm;
w2 is the width of a No. 2 belted layer, A2 is an included angle between the No. 2 belted layer and a tire body, E2 is the expansion rate of the No. 2 belted layer, and the vertical distance between the end point of the No. 2 belted layer and the center is not more than 3mm;
w3 is the width of A3 # belted layer, A3 is an included angle between the 3# belted layer and a tire body, and E3 is the expansion rate of the 3# belted layer;
b is the running surface width of the tire where the belt structure is located;
when L =0, the belt layer construction adjustment has no influence on the distribution shape of the tire grounding pressure; when L is larger than or equal to 0, the distribution shape of the tire grounding pressure can be changed to be square by the belt layer construction adjustment, and the effect is more obvious when the numerical value is larger; when L is less than or equal to 0, the tire grounding pressure distribution shape is rounded by the belt layer construction adjustment, and the effect is more obvious when the numerical value is larger.
Example 1
By the technical method, a belt ply is redesigned, the rectangle index L of the tire ground pressure distribution shape is designed to be 0, and the specific parameters are as follows (the width unit is mm):
example 2
By the technical method, a belted layer is redesigned, the rectangle index L of the tire grounding pressure distribution shape is designed to be 1%, and the specific parameters are as follows (the width unit is mm):
example 3
By the technical method, a belted layer is redesigned, the rectangle index L of the tire ground pressure distribution shape is designed to be 2%, and the specific parameters are as follows (the width unit is mm):
example 4
By the technical method, a belted layer is redesigned, the rectangle index L of the tire ground pressure distribution shape is designed to be-1%, and the specific parameters are as follows (the width unit is mm):
example 5
By the technical method, a belted layer is redesigned, the rectangle index L of the tire ground pressure distribution shape is designed to be-2%, and the specific parameters are as follows (the width unit is mm):
tires were designed according to the belt design methods of examples 1 to 5 (all other factors were kept the same), and trial-manufacture was carried out, and the ground contact pressure distribution results of the manufactured tires are shown in fig. 2. As can be seen from the figure, by using the belt layer design method, the tire grounding pressure distribution shape can be adjusted by adjusting the tire grounding pressure distribution shape rectangularity index L, and the tire design with controllable grounding pressure distribution is realized.
Claims (1)
1. A design method of a tire with controllable ground contact pressure distribution comprises a 1# belt ply, a 2# belt ply, a 3# belt ply and a 0-degree belt ply which are arranged on a carcass ply; the method is characterized in that after the overall layout design of the tire is finished, the width and expansion rate of a 1# belt ply, a 2# belt ply and a 3# belt ply and the included angle between the belt ply and a tire body are adjusted in the construction design to control the ground pressure distribution shape of the final finished tire; the distribution shape of the grounding pressure is judged by adopting a rectangle degree index L;
w1 is the width of a No. 1 belted layer, A1 is an included angle between the No. 1 belted layer and a tire body, E1 is the expansion rate of the No. 1 belted layer, and the vertical distance between the end point of the No. 1 belted layer and the center does not exceed 2mm;
w2 is the width of a No. 2 belted layer, A2 is an included angle between the No. 2 belted layer and a tire body, E2 is the expansion rate of the No. 2 belted layer, and the vertical distance between the end point of the No. 2 belted layer and the center is not more than 3mm;
w3 is the width of the 3# belt layer;
b is the tread width of the tire;
when L =0, the belt layer construction adjustment has no influence on the distribution shape of the tire grounding pressure; when L is larger than or equal to 0, the distribution shape of the tire grounding pressure can be changed to be square by the belt layer construction adjustment, and the effect is more obvious when the numerical value is larger; when L is less than or equal to 0, the tire grounding pressure distribution shape is rounded by the belt layer construction adjustment, and the effect is more obvious when the numerical value is larger.
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| CN202010141636.3A CN111382478B (en) | 2020-03-03 | 2020-03-03 | Design method of tire with controllable ground pressure distribution |
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| CN202010141636.3A CN111382478B (en) | 2020-03-03 | 2020-03-03 | Design method of tire with controllable ground pressure distribution |
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| CN111382478B true CN111382478B (en) | 2023-03-28 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101187955A (en) * | 2006-11-13 | 2008-05-28 | 韩国轮胎株式会社 | Tire section design method using belt ply part bending |
| CN102582368A (en) * | 2012-01-17 | 2012-07-18 | 安徽佳通轮胎有限公司 | Inflatable Load radial tire with sectional type belted layer structure |
| CN104442210A (en) * | 2014-11-15 | 2015-03-25 | 杭州朝阳橡胶有限公司 | High-rectangular-degree ground-contact shaped all-steel low-load radial tire with three-belt-ply structure |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017045600A1 (en) * | 2015-09-14 | 2017-03-23 | 江苏大学 | Method for improving production process for wide-base truck radial tire |
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2020
- 2020-03-03 CN CN202010141636.3A patent/CN111382478B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101187955A (en) * | 2006-11-13 | 2008-05-28 | 韩国轮胎株式会社 | Tire section design method using belt ply part bending |
| CN102582368A (en) * | 2012-01-17 | 2012-07-18 | 安徽佳通轮胎有限公司 | Inflatable Load radial tire with sectional type belted layer structure |
| CN104442210A (en) * | 2014-11-15 | 2015-03-25 | 杭州朝阳橡胶有限公司 | High-rectangular-degree ground-contact shaped all-steel low-load radial tire with three-belt-ply structure |
Non-Patent Citations (5)
| Title |
|---|
| 12R22.5规格载重子午线轮胎接地印痕和压力分布优化改进;崔鲁欣等;《橡塑技术与装备》;20181001(第19期);全文 * |
| 445/45R19.5超低断面宽基无内胎全钢载重子午线轮胎的设计;李福香等;《橡胶工业》;20170325(第03期);全文 * |
| 子午线轮胎接地特性可控设计理论及实验研究;崔志博;《中国优秀博硕士学位论文全文数据库(电子期刊) 工程科技Ⅰ辑》;20180115;第6、14-17、74页 * |
| 带束层帘线对载重子午线轮胎胎面耐磨性能的影响;赵亚元等;《橡胶工业》;20170425(第04期);全文 * |
| 高性能子午线轮胎结构设计;田芳等;《橡塑资源利用》;20180228(第01期);全文 * |
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Address after: 310018 No. 1, No. 1 Street, Qiantang District, Hangzhou, Zhejiang Applicant after: Zhongce Rubber Group Co.,Ltd. Address before: 310018 No.2, 10th Street, economic and Technological Development Zone, Jianggan District, Hangzhou City, Zhejiang Province Applicant before: ZHONGCE RUBBER GROUP Co.,Ltd. |
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