CN114486296A - Detection method of full-explosion-proof tire - Google Patents
Detection method of full-explosion-proof tire Download PDFInfo
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- CN114486296A CN114486296A CN202210099263.7A CN202210099263A CN114486296A CN 114486296 A CN114486296 A CN 114486296A CN 202210099263 A CN202210099263 A CN 202210099263A CN 114486296 A CN114486296 A CN 114486296A
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- 238000001514 detection method Methods 0.000 title claims abstract description 21
- 238000012360 testing method Methods 0.000 claims abstract description 86
- 238000000034 method Methods 0.000 claims description 9
- 238000004073 vulcanization Methods 0.000 claims description 3
- 238000013461 design Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000007689 inspection Methods 0.000 description 8
- 238000005457 optimization Methods 0.000 description 5
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000009533 lab test Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
- G01M17/02—Tyres
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Tires In General (AREA)
Abstract
The invention discloses a detection method of a full explosion-proof tire, and belongs to the technical field of tire manufacturing. The detection method can effectively judge the support performance of the tire side wall to provide theoretical data support for the tire to run in a short of air, and ensure the safety and reliability of products put on the market; the zero-air-pressure durability of the tire can be effectively judged, the zero-air-pressure durability is reflected to the use of the tire, the positioning design requirement of a product is met, and the safety and reliability of the product put on the market are ensured; the detection efficiency of the product can be improved without a real vehicle test.
Description
Technical Field
The invention relates to the technical field of tire manufacturing, in particular to a detection method of a full explosion-proof tire.
Background
With the rapid development of the tire industry, the safety requirements for using tires are increasing. The conventional tire is separated from the rim within seconds under the pressure loss state, so that the vehicle loses the support balance and serious threats are brought to the driving safety. The run-flat tire can stably run for a certain distance under the condition of tire pressure loss, thereby improving the safety of tire use. At present, self-supporting run-flat tires are mainly used in the market, and the main principle is to arrange a component with certain supporting force at the tire side part of the tire, which is called as side supporting rubber. Under the condition of tire air leakage and pressure loss, the tire side is not easy to be broken, the tire is ensured to be maintained at a certain sinking amount, and the vehicle body is ensured to run in a balanced manner. The sidewall stiffness is the key to determining the tire support capability, which is primarily the determination of whether the tire has ride capability in the absence of tire pressure.
At present, the only standard for judging the self-supporting capacity running tire is that the running tire runs for 1h at the speed of 80km/h in an indoor zero-air-pressure state and is qualified, the judgment is not applicable to the structure and related performances of the full explosion-proof tire, the difference between the indoor judgment and the use result of an actual vehicle is large, and the existing judgment means is not enough to represent the performance of the full explosion-proof product.
Disclosure of Invention
Aiming at the technical problems, the invention provides a detection method of a full explosion-proof tire, which can improve the accuracy of detection data of the full explosion-proof tire.
In order to solve the technical problem, the invention provides a detection method of a full explosion-proof tire, which comprises the following steps:
condition 1: under the zero air pressure state, the test speed is set to be 50-70km/h, the test load is 65% -80% of the load capacity corresponding to the load index, the test duration is more than or equal to 30min, and if the test load meets the condition that the section height change rate is not more than 20% after the test;
condition 2:
detecting the radial rigidity of the tire in a zero-air-pressure state, wherein the test load index corresponds to 70% of the load capacity, and the rigidity value is more than or equal to 60N/mm;
detecting the radial rigidity of the tire under the condition of 50% of air pressure, wherein the test load index corresponds to 70% of the load capacity, and the rigidity value is more than or equal to 140N/mm;
detecting the radial rigidity of the tire under the condition of 60% of air pressure, wherein the test load index corresponds to 70% of the load capacity, and the rigidity value is more than or equal to 160N/mm;
detecting the radial rigidity of the tire under the condition of 100% of air pressure, wherein the test load index corresponds to 70% of the load capacity, and the rigidity value is more than or equal to 200N/mm;
and simultaneously, at least one of radial rigidity detection of the tire under the air pressure states of zero pressure, 50% air pressure, 60% air pressure and 100% air pressure in the condition 1 and the condition 2 is met, and the full explosion-proof tire is qualified.
As an optimization, simultaneously satisfy
In the condition 1, the test speed is set to be 60km/h, the test load is 70% of the load capacity corresponding to the load index, and the test duration is 30 min;
detecting the radial rigidity of the tire under the zero air pressure state in the condition 2, wherein the test load index corresponds to 70% of the load capacity, and the rigidity value is more than or equal to 60N/mm;
and the radial rigidity of the tire is detected under the condition of 50% of air pressure, the test load index corresponds to 70% of the load capacity, and the rigidity value is more than or equal to 140N/mm;
the full run-flat tire is qualified.
As an optimization, the ambient temperature measured in the condition 1 was 35 ℃. + -. 3 ℃.
As an optimization, the tires tested for stiffness were stored at room temperature for 3 days after vulcanization.
As optimization, the environment temperature of the rigidity detection is 25 +/-2 ℃.
And (4) as optimization, selecting a tire quartering point in a test, and taking the minimum value of the radial stiffness of the four points as a judgment standard.
Compared with the prior art, the invention has the following technical effects:
according to the investigation of the positioning of the full explosion-proof tire product, the tire can run for more than 30min at the speed of 60km/h under the condition of air shortage or zero tire pressure, and according to the result of investigating the road conditions of the Chinese expressway and each region, the zero air pressure running capability is enough for vehicles to reach a nearby maintenance station for tire replacement.
1. The support performance of the side wall of the tire can be effectively judged by limiting the radial rigidity value, theoretical data support can be provided for the tire to run in a short time, and the safety and reliability of products put on the market are guaranteed.
2. The zero-air-pressure endurance test can effectively judge the zero-air-pressure endurance of the tire, and the zero-air-pressure endurance test is reflected in the use of the tire, so that the product positioning design requirement is met, and the safety and reliability of the product on the market are ensured.
3. Through the verification of the indoor test, the detection efficiency of the product can be improved without a real vehicle test.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
The invention provides a detection method of a full explosion-proof tire, which can improve the accuracy of detection data of the full explosion-proof tire.
The present invention will be described in further detail with reference to specific embodiments in order to make the above objects, features and advantages more comprehensible.
The invention provides a method for detecting a full explosion-proof tire (the full explosion-proof tire is defined in the following steps that the shape of a supporting rubber is trapezoidal, the thickness of the supporting rubber is 4mm-12mm), and if the full explosion-proof tire can run for more than 60km in a real vehicle at a speed of 60km/h, the tire is judged to be qualified.
Condition 1: under the zero air pressure state, the test speed is set to be 60-80km/h, the test load is 65% -80% of the load capacity corresponding to the load index, the test duration is more than or equal to 30min, and if the condition that the change rate of the section height under the test load is not more than 20% after the test is met, the condition 1 is met;
condition 2:
detecting the radial rigidity of the tire in a zero-air-pressure state, wherein the test load index corresponds to 70% of the load capacity, and the rigidity value is more than or equal to 60N/mm;
detecting the radial rigidity of the tire under the condition of 50% of air pressure, wherein the test load index corresponds to 70% of the load capacity, and the rigidity value is more than or equal to 140N/mm;
detecting the radial rigidity of the tire under the condition of 60% of air pressure, wherein the test load index corresponds to 80% of the load capacity, and the rigidity value is more than or equal to 160N/mm;
detecting the radial rigidity of the tire under the condition of 100% of air pressure, wherein the test load index corresponds to 70% of the load capacity, and the rigidity value is more than or equal to 200N/mm;
and simultaneously, at least one of radial rigidity detection of the tire under the air pressure states of zero pressure, 50% air pressure, 60% air pressure and 100% air pressure in the condition 1 and the condition 2 is met, and the full explosion-proof tire is qualified.
Specifically, the ambient temperature detected in the condition 1 is 35 ℃ ± 3 ℃.
Specifically, the rigidity-tested tire was stored at room temperature for 3 days after vulcanization.
Specifically, the ambient temperature for rigidity detection is 25 ℃ +/-2 ℃.
Specifically, the test selects a tire quartering point, and the minimum value of the radial stiffness of the four points is used as a judgment standard.
In order to further illustrate the present invention, the following detailed descriptions of the technical solutions provided by the present invention are provided with reference to the examples, but they should not be construed as limiting the scope of the present invention.
Example 1
The test speed is set to 70km/h, the test load is 65% of the load capacity corresponding to the load index, the test duration is not less than 30min, the test is completed according to the requirements, the tire tread and the tire sidewall are not separated through appearance inspection, and the section height change rate under the test load after the appearance inspection of the test tire is not more than 20%.
And simultaneously satisfies the following radial rigidity detection of the tire under 3 air pressure states:
detecting the radial rigidity of the tire under a zero-air-pressure state, wherein the test load index corresponds to 70% of the load capacity, and the rigidity value is more than or equal to 50N/mm;
detecting the radial rigidity of the tire under the condition of 50% of air pressure, wherein the test load index corresponds to 70% of the load capacity, and the rigidity value is more than or equal to 140N/mm;
and (3) detecting the radial rigidity of the tire under the condition of 100% of air pressure, wherein the test load index corresponds to 70% of the load capacity, and the rigidity value is more than or equal to 200N/mm.
The tire is qualified.
Example 2
The test speed is set to be 50km/h, the test load is 80% of the load capacity corresponding to the load index, the test duration is not less than 30min, the test is completed according to the requirements, the tread and the sidewall are not separated in appearance inspection, and the section height change rate under the test load after the appearance inspection of the test tire is not more than 20%.
And simultaneously satisfies the following radial rigidity detection of the tire under 2 air pressure states:
detecting the radial rigidity of the tire in a zero-air-pressure state, wherein the test load index corresponds to 70% of the load capacity, and the rigidity value is more than or equal to 50N/mm;
and (3) detecting the radial rigidity of the tire under the condition of 60% of air pressure, wherein the test load index corresponds to 70% of the load capacity, and the rigidity value is more than or equal to 160N/mm.
The tire is qualified.
Example 3
The test speed is set to be 60km/h, the test load is 70% of the load capacity corresponding to the load index, the test duration is not less than 30min, the test is completed according to the requirements, the tread and the sidewall are not separated in appearance inspection, and the section height change rate under the test load after the appearance inspection of the test tire is not more than 20%.
And simultaneously satisfies the following radial rigidity detection of the tire under 2 air pressure states:
detecting the radial rigidity of the tire in a zero-air-pressure state, wherein the test load index corresponds to 70% of the load capacity, and the rigidity value is more than or equal to 60N/mm;
and (3) detecting the radial rigidity of the tire under the condition of 50% of air pressure, wherein the test load index corresponds to 70% of the load capacity, and the rigidity value is more than or equal to 140N/mm.
The tire is qualified.
Example 4
The test speed is set to be 60km/h, the test load is 70% of the load capacity corresponding to the load index, the test duration is less than 30min, the test is completed according to the requirements, the tread and the sidewall are not separated in the appearance inspection, and the section height change rate under the test load after the appearance inspection of the test tire is 25% and is more than 20%.
And (4) detecting the radial rigidity of the tire under the zero air pressure state, wherein the test load index corresponds to 70% of the load capacity, and the rigidity value is 59N/mm.
The tire does not have zero-pressure supporting capability, and the zero-pressure durability is unqualified.
Indoor test and actual test are carried out on the judging method in the scheme, and the results are shown in a table 1:
TABLE 1 correlation test between laboratory tests and real vehicle usage
As can be seen from Table 1, at 60km/h, the indoor zero-air-pressure endurance result of 4 schemes is more than or equal to 30min, the radial stiffness under zero air pressure is more than 70N/mm, the radial stiffness under 50% air pressure is more than 140N/mm, the actual vehicle result reaches 60min, the actual vehicle requirement is met, the judgment method in the embodiment 3 is the simplest and most accurate, and the technical means adopted in the embodiment 3 is preferably adopted in specific use.
The principle and the implementation mode of the invention are explained by applying a specific example, and the description of the embodiment is only used for helping to understand the method and the core idea of the invention; also, it is obvious to those skilled in the art that various changes and modifications can be made in the embodiments and applications of the invention. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (6)
1. A detection method of a full explosion-proof tire is characterized by comprising the following steps:
condition 1: under the zero air pressure state, the test speed is set to be 50-70km/h, the test load is 65% -80% of the load capacity corresponding to the load index, the test duration is more than or equal to 30min, and if the change rate of the section height under the test load is not more than 20% after the test;
condition 2:
detecting the radial rigidity of the tire in a zero-air-pressure state, wherein the test load index corresponds to 70% of the load capacity, and the rigidity value is more than or equal to 60N/mm;
detecting the radial rigidity of the tire under the condition of 50% of air pressure, wherein the test load index corresponds to 70% of the load capacity, and the rigidity value is more than or equal to 140N/mm;
detecting the radial rigidity of the tire under the condition of 60% of air pressure, wherein the test load index corresponds to 70% of the load capacity, and the rigidity value is more than or equal to 160N/mm;
detecting the radial rigidity of the tire under the condition of 100% of air pressure, wherein the test load index corresponds to 70% of the load capacity, and the rigidity value is more than or equal to 200N/mm;
and simultaneously, at least one of radial rigidity detection of the tire under the air pressure states of zero pressure, 50% air pressure, 60% air pressure and 100% air pressure in the condition 1 and the condition 2 is met, and the full explosion-proof tire is qualified.
2. A method for testing a fully run-flat tire according to claim 1, wherein the requirements are satisfied simultaneously
In the condition 1, the test speed is set to be 60km/h, the test load is 70% of the load capacity corresponding to the load index, and the test duration is 30 min;
in the condition 2, radial rigidity of the tire is detected in a zero-air-pressure state, the test load index corresponds to 70% of the load capacity, and the rigidity value is more than or equal to 60N/mm;
and the radial rigidity of the tire is detected under the condition of 50% of air pressure, the test load index corresponds to 70% of the load capacity, and the rigidity value is more than or equal to 140N/mm;
the full run-flat tire is qualified.
3. The method for testing a full run-flat tire according to claim 1 or 2, wherein the ambient temperature measured in the condition 1 is 35 ℃ ± 3 ℃.
4. The method for testing a fully run-flat tire according to claim 1 or 2, wherein the tire for testing rigidity is stored at room temperature for 3 days after vulcanization.
5. The method for testing a fully run-flat tire according to claim 4, wherein the ambient temperature for the rigidity test is 25 ℃ ± 2 ℃.
6. The method for detecting the full explosion-proof tire according to claim 5, wherein the test selects the tire quartering points, and the minimum value of the radial stiffness of the four points is used as a judgment standard.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210099263.7A CN114486296B (en) | 2022-01-27 | 2022-01-27 | Detection method of full explosion-proof tire |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210099263.7A CN114486296B (en) | 2022-01-27 | 2022-01-27 | Detection method of full explosion-proof tire |
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| CN114486296A true CN114486296A (en) | 2022-05-13 |
| CN114486296B CN114486296B (en) | 2024-03-01 |
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|---|---|---|---|---|
| KR20080079464A (en) * | 2007-02-27 | 2008-09-01 | 금호타이어 주식회사 | A method for testing a run-flat tire |
| WO2010137347A1 (en) * | 2009-05-29 | 2010-12-02 | 株式会社ブリヂストン | Run-flat tire |
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| CN111780994A (en) * | 2020-07-10 | 2020-10-16 | 三角轮胎股份有限公司 | Indoor test method for cutting resistance and puncture resistance of tire |
| CN111929081A (en) * | 2020-07-31 | 2020-11-13 | 济宁齐鲁检测技术有限公司 | Durability test method for tire bead of truck tire |
| CN112590464A (en) * | 2019-10-02 | 2021-04-02 | 韩国轮胎与科技株式会社 | Tire wear measuring device and tire wear measuring method using the same |
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2022
- 2022-01-27 CN CN202210099263.7A patent/CN114486296B/en active Active
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| KR20080079464A (en) * | 2007-02-27 | 2008-09-01 | 금호타이어 주식회사 | A method for testing a run-flat tire |
| WO2010137347A1 (en) * | 2009-05-29 | 2010-12-02 | 株式会社ブリヂストン | Run-flat tire |
| CN112590464A (en) * | 2019-10-02 | 2021-04-02 | 韩国轮胎与科技株式会社 | Tire wear measuring device and tire wear measuring method using the same |
| CN110823602A (en) * | 2019-10-31 | 2020-02-21 | 安徽佳通乘用子午线轮胎有限公司 | Method for verifying indoor evaluation of tire life cycle validity degree |
| CN111780994A (en) * | 2020-07-10 | 2020-10-16 | 三角轮胎股份有限公司 | Indoor test method for cutting resistance and puncture resistance of tire |
| CN111929081A (en) * | 2020-07-31 | 2020-11-13 | 济宁齐鲁检测技术有限公司 | Durability test method for tire bead of truck tire |
Non-Patent Citations (2)
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| 罗吉良 等: "自体支撑型缺气保用轮胎", 《中华人民共和国国家标准》, pages 7 * |
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| CN114486296B (en) | 2024-03-01 |
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