CN208698378U - A kind of heavily loaded Pneumatic belt tire with tyre ring reinforcement material - Google Patents
A kind of heavily loaded Pneumatic belt tire with tyre ring reinforcement material Download PDFInfo
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- CN208698378U CN208698378U CN201820532822.8U CN201820532822U CN208698378U CN 208698378 U CN208698378 U CN 208698378U CN 201820532822 U CN201820532822 U CN 201820532822U CN 208698378 U CN208698378 U CN 208698378U
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Abstract
The utility model is a kind of load-carrying Pneumatic belt tire more particularly to a kind of heavily loaded Pneumatic belt tire with tyre ring reinforcement material.The body piles of the tire are layer of steel wire casing plies, wrap wire loop downwards and then outward from the inside of wire loop, anti-package is completed on the outside of wire loop；Cover the anti-package region is one layer of strengthening course being made of wirecord fabric；Strengthening course at least covers wire loop side and carcass anti-package endpoint, and height than carcass anti-package endpoint closer to sidewall rubber；Carcass anti-package endpoint range of (a) at a distance from strengthening course endpoint is 8mm~20mm；And the endpoint of strengthening course covers protective rubber.The elongation characteristics that the utility model passes through change strengthening course steel wire, steel wire is set still to be able to realize biggish elongation under low stress, to enable strengthening course relatively easily to follow when by extension strain described previously, the strain near strengthening course upper extreme point is mitigated, improves bead durability.
Description
Technical field
The utility model is a kind of load-carrying Pneumatic belt tire more particularly to a kind of weight with tyre ring reinforcement material
Carry Pneumatic belt tire.
Background technique
In recent years, reuse Pneumatic belt tire is uploaded in Chinese market rapidly realize tubeless.With Europe
There is difference in U.S. market, Chinese market part tire uses higher air pressure and load at present.This most of to live through Europe
The technology of U.S. market test is easy to appear the problem of bead durability deficiency in Chinese market.
Fig. 1 is the bead structure schematic diagram of common load-carrying Pneumatic belt tubeless tyre.In this structure, carcass from
On the inside of wire loop on the outside of anti-package to wire loop, there is one layer of strengthening course being made of wirecord fabric in the design of anti-package areas outside, mend
Strong layer cord is arranged according to 20 °~40 ° of angle (relatively circumferential).In the structure of fig. 1, it is anti-to be higher than carcass for strengthening course upper extreme point
Packet endpoint.In order to adapt to the Stress distribution situation in this region, the strengthening course steel wire in this structure is usually using high drawing
Steel wire.
Fig. 2 is the ruptured type that relatively common carcass anti-package region compared with hyperbar, high load occurs
Schematic diagram.This kind of destruction is characterized in: usually with carcass anti-package endpoint be rupture starting point, this region experience repeatedly deflect change
Rupture, often appears in the mid-term of tire used caused by the shearing force generated after shape.But with the transport form of China
Gradually be changed into high speed from short-distance transport to transport for long-distance, the load of tire is opposite to be reduced, and use intensity reduces, it is previously described this
Kind ruptured type also gradually tails off.But at the same time, in the latter stage of Life of Tyre, and primary renovation, secondary renovation
Stage, also due to rupture caused by the shearing force in anti-package region appears on the position of strengthening course upper extreme point, fracture pattern
In umbrella, Fig. 3 is seen.
Summary of the invention
The utility model aim be to provide it is a kind of be able to solve above-mentioned strengthening course upper extreme point splintering problem, effectively promotion tire
Enclose the load-carrying Pneumatic belt tire of durability.
In order to achieve the above purpose, the utility model uses technical solution below:
A kind of heavily loaded Pneumatic belt tire with tyre ring reinforcement material, the body piles of the tire are layer of steel wire cords
Layer wraps wire loop downwards and then outward from the inside of wire loop, anti-package is completed on the outside of wire loop；Cover the anti-package region
Be one layer of strengthening course being made of wirecord fabric；Strengthening course uses, and strengthening course at least covers wire loop side and carcass is anti-
Packet endpoint, and height than carcass anti-package endpoint closer to sidewall rubber；Carcass anti-package endpoint at a distance from strengthening course endpoint (a) model
It encloses for 8mm~20mm；And the endpoint of strengthening course covers protective rubber, and protectiveness rubber is cladded with the total of glue with strengthening course
There are following relationships between thickness (d) and strengthening course cord diameter (c): d=(2.5~5) × c；The protectiveness rubber from
Wirecord fabric endpoint upwardly extends, and decrescence, elongation (b) is within the scope of 8mm~35mm for thickness.
Above-mentioned strengthening course upper extreme point position is also covered with section shown in Fig. 4 and mitigates rubber (also referred to as in fusiform strain
Protectiveness rubber), it can further promote bead durability.This protectiveness rubber shape and ess-strain size shown in Fig. 3
It is distributed consistent, the protectiveness rubber thickness (d) of strengthening course upper extreme point position and strengthening course steel wire diameter (c) exist with ShiShimonoseki
System: d=(2.5~5) × c.If protectiveness rubber thickness is less than 2.5 times of steel wire diameter, mitigation strain cannot be given full play to
Effect；And if thickness is greater than 5 times of diameter, the effect for mitigating strain is no longer so obvious, and can cause in production
The problem of.And the length (b) that the protectiveness rubber extends near sidewall rubber from strengthening course upper extreme point will also guarantee in 8mm or more
The effect of dispersion strain can just be given full play to.But if length (b), more than 35mm, protectiveness rubber can not play more
Dispersion strain effect, and can cause production on problem.
The distance (a) of carcass anti-package endpoint to strengthening course upper extreme point is also required to guarantee to make on strengthening course in 8mm or more with this
Endpoint can avoid the shearing force acted on anti-package endpoint.But if distance (a) will increase reinforcement more than if 20mm or more
The strain that layer itself is generated due to deflecting deformation, causes strengthening course to rupture.
As a further improvement, the strengthening course cord is complex root according to steel strand group made of certain lay pitch wringing
At one every steel wire is made of complex root according to finer wire made of certain lay pitch twisting.
As a further improvement, the elongation at break of the strengthening course cord is 5% or more.
As a further improvement, the elongation at break of the strengthening course cord is 5% or more.
As a further improvement, the structural elongation of the strengthening course cord reaches optimum efficiency 2.5% or more
Structural elongation is 3.5% or more.The pulling force of strengthening course steel wire-elongation characteristics curve as shown in figure 5, the catastrophe point of curve by passing
The elongation 2% of system is postponed to 3.5%, realizes that steel wire can more generate structural stretch in the case where being acted on by pre-stress with this
It is long.The structural elongation characteristic of steel wire depend on every finer wire be twisted angle (α) and each steel strand be twisted angle
(β) is twisted angle and adds up between (alpha+beta) and pulling force-extension curve catastrophe point that there are following relationships:
Alpha+beta=20 °~29 ° 2%
Alpha+beta=30 °~38 ° 2.5%
3.0% or more alpha+beta=39 °~48 °
After steel wire using this elongation characteristics, so that it may so that steel wire extends (strain) greatly under low-stress state, in
Elongation (strain) is small under high-stress state, nonlinear strain-stress relation is showed, so that strengthening course be enable to withstand more
Prolonged use.
As a further improvement, the strengthening course cord diameter is within the scope of 0.8mm~1.4mm.
As a further improvement, the carcass anti-package endpoint at a distance from strengthening course endpoint (a) range be 12mm~
16mm；Elongation (b) is within the scope of 12mm~28mm.
As a further improvement, the lower extreme point position of strengthening course is called in person (5h) not higher than the tire of tyre bead, upper extreme point is higher than carcass
Anti-package endpoint.
As a further improvement, the range of the arrangement angle of the strengthening course steel wire can be 20 °~45 °.If choosing
With 20 ° or so of low-angles, the strengthening effect to carcass anti-package end region is best, but can be encouraged on strengthening course
The rupture of endpoint location occurs；And if selecting 45 ° or so of wide-angle, although helping to reduce the broken of strengthening course upper extreme point
It splits, but can also reduce the invigoration effect to turn-up position simultaneously.So both comprehensive superiority and inferiority, the arrangement angles of the strengthening course steel wire
30 ° of degree selection.
As a further improvement, 100% of the protectiveness rubber outside the strengthening course endpoint stretches modulus surely and is equal to or low
Be cladded with glue in above-mentioned wirecord fabric 100% stretches modulus surely.
As shown in figure 3, being mainly by stretching on strengthening course extending direction in the umbrella rupture that strengthening course upper extreme point occurs
Caused by long strain.In the present invention, by change strengthening course steel wire elongation characteristics, make steel wire under low stress still
It can be realized biggish elongation, so that strengthening course be enable relatively easily to chase after when by extension strain described previously
With, mitigate strengthening course upper extreme point near strain, improve bead durability.
Detailed description of the invention
The applicable load-carrying Pneumatic belt tire sectional schematic diagram of Fig. 1 the utility model.
Fig. 2 tyre bead damage plan 1.
Nearby Strain Distribution schematic diagram, wherein arrow expression should become larger for Fig. 3 tyre bead damage plan 2 and strengthening course upper extreme point
Small, dotted line indicates range of strain.
Fig. 4 case study on implementation schematic diagram.
Fig. 5 is that the pulling force-elongation for the wire material that tradition wire material and the utility model use used in ladle is special
Linearity curve.
Symbol description
1, tyre bead section；
2, wire loop；
3, body piles；
4, strengthening course；
4a, strengthening course upper extreme point；
4b, strengthening course lower extreme point；
5, bead base；
5h, bead base tire heel position；
5t, bead base tire toe position；
6, protectiveness rubber.
Specific embodiment
Specific embodiment of the present utility model is made a detailed explanation with reference to the accompanying drawing.
A kind of heavily loaded Pneumatic belt tire with tyre ring reinforcement material, the body piles of the tire are layer of steel wire cords
Layer wraps wire loop downwards and then outward from the inside of wire loop, anti-package is completed on the outside of wire loop；Cover the anti-package region
Be one layer of strengthening course being made of wirecord fabric；Strengthening course at least covers wire loop side and carcass anti-package endpoint, and high
Degree is than carcass anti-package endpoint closer to sidewall rubber；Carcass anti-package endpoint at a distance from strengthening course endpoint (a) range be 8mm~
20mm；And the endpoint of strengthening course covers protective rubber, and protectiveness rubber and strengthening course are cladded with the overall thickness (d) of glue and mend
There are following relationships: d=(2.5~5) × c between strong layer cord diameter (c)；The protectiveness rubber is from wirecord fabric endpoint
It upwardly extends, decrescence, elongation (b) is within the scope of 8mm~35mm for thickness.
The strengthening course cord is made of complex root according to steel strand made of certain lay pitch wringing, per one steel wire by
Complex root is formed according to finer wire made of certain lay pitch twisting.The elongation at break of the strengthening course cord is 5% or more.
The structural elongation of the strengthening course cord reaches the structural elongation of optimum efficiency 3.5% or more 2.5% or more.
The strengthening course cord diameter is within the scope of 0.8mm~1.4mm.It calls in person not higher than the tire of tyre bead the lower extreme point position of strengthening course
(5h), upper extreme point are higher than carcass anti-package endpoint.The arrangement angle of the strengthening course steel wire selects 30 °.Outside the strengthening course endpoint
Protectiveness rubber 100% stretch modulus surely and 100% stretch modulus surely equal to or less than what above-mentioned wirecord fabric was cladded with glue.
Subjects are 315/80R22.5, the load-carrying Pneumatic belt with steel belt, steel wire carcass structure
Tire.The test tire of several different strengthening courses is made according to following scheme:
Table 1a
* the diameter except going after steel wire
The protectiveness rubber thickness (d) of above-mentioned tire is 3.5mm, and length (b) is 22mm, carcass anti-package endpoint to strengthening course
The distance (a) of upper extreme point is 14mm, and the arrangement angle of strengthening course steel wire is 30 °.4 kinds of test tires are made according to above scheme,
Indoor lathe endurance test is carried out according to test method hereafter, test result is shown in Table 1b
[indoor lathe endurance test]
Test tire is mounted on 22.5 × 9.00 wheel rim, charged pressure 830kPa, under 30 DEG C of room temperature,
80% load for applying single tire gauge load 3750kg, is run 10 hours in advance with the speed of 40km/h, and pre- run applies after the completion
140% load is travelled with the speed of 40km/h, until damaged tyres.The setting of test speed and test temperature is in order to the greatest extent
Amount avoids tire since the excessive heat of tyre surface is to leading to damaged tyres, it is ensured that can really reflect the performance water of bead part
It is flat.
Table 1b
Then the effect of protectiveness rubber of different shapes is confirmed again, is as follows:
Table 2
* is converted to index to compare the result of scheme 1 for 100
Pulling force-extension curve the catastrophe point that can be seen that strengthening course steel wire from the result of table 1b postpones till 2.5% from 2%
After 3.5%, the ability of structure of steel wire elongation is enhanced, and bead durability performs better than.And the test result card of table 2
It is bright, as long as protectiveness rubber thickness (d) and length (b) can meet the Strain Distribution situation near strengthening course endpoint, it will be able to
Significantly promote bead durability.Certainly, protectiveness rubber is needed using the rubber compounding for covering glue same type with strengthening course herein,
Its 100% stretch surely modulus will be equal to or slightly lower than strengthening course cover glue, can just give full play of dispersion, absorb strain effect.
In the case study on implementation, the lower extreme point of strengthening course terminates at the tire heel position on the outside of wire loop on the lower.It is used in reality
In, tire toe position below wire loop can also be terminated at using strengthening course lower extreme point, or terminate at wire loop inside front position
The structure set.
Claims (9)
1. a kind of heavily loaded Pneumatic belt tire with tyre ring reinforcement material, which is characterized in that the body piles of the tire are one
Layer metal-cord wraps wire loop downwards and then outward from the inside of wire loop, anti-package is completed on the outside of wire loop；Covering
The anti-package region is one layer of strengthening course being made of wirecord fabric；Strengthening course at least covers wire loop side and carcass anti-package
Endpoint, and height than carcass anti-package endpoint closer to sidewall rubber；Carcass anti-package endpoint at a distance from strengthening course endpoint (a) range
For 8mm~20mm；And the endpoint of strengthening course covers protective rubber, and protectiveness rubber and strengthening course are cladded with the overall thickness of glue
(d) there are following relationships between strengthening course cord diameter (c): d=(2.5~5) × c；The protectiveness rubber is from steel wire
Cord endpoint upwardly extends, and decrescence, elongation (b) is within the scope of 8mm~35mm for thickness.
2. a kind of heavily loaded Pneumatic belt tire with tyre ring reinforcement material according to claim 1, which is characterized in that
Strengthening course cord is made of complex root according to steel strand made of certain lay pitch wringing, per one steel wire by complex root according to certain
The composition of finer wire made of lay pitch twisting.
3. a kind of heavily loaded Pneumatic belt tire with tyre ring reinforcement material according to claim 1, which is characterized in that
The elongation at break of strengthening course cord is 5% or more.
4. a kind of heavily loaded Pneumatic belt tire with tyre ring reinforcement material according to claim 1, which is characterized in that
The structural elongation of strengthening course cord reaches the structural elongation of optimum efficiency 3.5% or more 2.5% or more.
5. a kind of heavily loaded Pneumatic belt tire with tyre ring reinforcement material according to claim 1, which is characterized in that
Strengthening course cord diameter is within the scope of 0.8mm~1.4mm.
6. a kind of heavily loaded Pneumatic belt tire with tyre ring reinforcement material according to claim 1, which is characterized in that
Carcass anti-package endpoint range of (a) at a distance from strengthening course endpoint is 12mm~16mm；Elongation (b) is in 12mm~28mm range
It is interior.
7. a kind of heavily loaded Pneumatic belt tire with tyre ring reinforcement material according to claim 1, which is characterized in that
The range of the arrangement angle of strengthening course steel wire can be 20 °~45 °.
8. a kind of heavily loaded Pneumatic belt tire with tyre ring reinforcement material according to claim 1, which is characterized in that
The lower extreme point position of strengthening course is called in person (5h) not higher than the tire of tyre bead, and upper extreme point is higher than carcass anti-package endpoint.
9. a kind of heavily loaded Pneumatic belt tire with tyre ring reinforcement material according to claim 1, which is characterized in that
100% of protectiveness rubber outside strengthening course endpoint is stretched modulus surely and is determined equal to or less than above-mentioned wirecord fabric is cladded with glue 100%
Stretch modulus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820532822.8U CN208698378U (en) | 2018-04-16 | 2018-04-16 | A kind of heavily loaded Pneumatic belt tire with tyre ring reinforcement material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820532822.8U CN208698378U (en) | 2018-04-16 | 2018-04-16 | A kind of heavily loaded Pneumatic belt tire with tyre ring reinforcement material |
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| Publication Number | Publication Date |
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| CN208698378U true CN208698378U (en) | 2019-04-05 |
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ID=65934056
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| CN201820532822.8U Active CN208698378U (en) | 2018-04-16 | 2018-04-16 | A kind of heavily loaded Pneumatic belt tire with tyre ring reinforcement material |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108407553A (en) * | 2018-04-16 | 2018-08-17 | 中策橡胶集团有限公司 | A kind of heavily loaded Pneumatic belt tire with high structural elongation rate tyre ring reinforcement material |
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2018
- 2018-04-16 CN CN201820532822.8U patent/CN208698378U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108407553A (en) * | 2018-04-16 | 2018-08-17 | 中策橡胶集团有限公司 | A kind of heavily loaded Pneumatic belt tire with high structural elongation rate tyre ring reinforcement material |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 310018 No. 1, No. 1 Street, Qiantang District, Hangzhou, Zhejiang Patentee after: Zhongce Rubber Group Co.,Ltd. Address before: 310018 No. 1, No. 1 Street, Hangzhou Xiasha economic and Technological Development Zone, Hangzhou, Zhejiang Patentee before: ZHONGCE RUBBER GROUP Co.,Ltd. |