CN208698380U - A kind of load-carrying Pneumatic belt tire - Google Patents
A kind of load-carrying Pneumatic belt tire Download PDFInfo
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- CN208698380U CN208698380U CN201820533074.5U CN201820533074U CN208698380U CN 208698380 U CN208698380 U CN 208698380U CN 201820533074 U CN201820533074 U CN 201820533074U CN 208698380 U CN208698380 U CN 208698380U
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Abstract
The utility model is a kind of load-carrying Pneumatic belt tire more particularly to a kind of load-carrying Pneumatic belt tire.A kind of load-carrying Pneumatic belt tire, 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, anti-package region overlay is provided with wirecord fabric strengthening course；Wirecord fabric strengthening course is made of the first steel wire strengthening course and the second steel wire strengthening course, and the steel wire of the first steel wire strengthening course uses the steel wire of tensionless winkler foundation characteristic, and the steel wire of the second steel wire strengthening course uses the steel wire of high tensile properties.The utility model is able to solve steel wire strengthening layer upper extreme point splintering problem described above and since the variation of carcass ply steel wire spacing causes carcass ply intensity to be weakened problem, has not only effectively enhanced the anti-load intensity of product, but also promote durability.
Description
Technical field
The utility model is a kind of load-carrying Pneumatic belt tire more particularly to a kind of load-carrying Pneumatic belt wheel
Tire.
Background technique
In recent years, reuse Pneumatic belt tire is uploaded in Chinese market rapidly realize tubeless.China
Market is different from European & American Market, and tire is all generally with higher air pressure and higher load, this most of to live through Europe
The technology of U.S. market test is but easy to appear this insufficient great problem of durability in China.
Fig. 1 is the bead structure schematic diagram of common load-carrying Pneumatic belt tubeless tyre.In this structure, carcass
On the inside of from wire loop on the outside of anti-package to wire loop, and bead part has two parts steel wire strengthening layer, and the two-part steel wire is strong
Change the wire material that layer uses two kinds of different stretch characteristics.In tyre bead inboard portion (close to carcass) have one layer by wirecord fabric structure
At strengthening layer, and near carcass turn-up position outside design have one layer of strengthening layer being made of wirecord fabric, this two kinds
Steel wire strengthening layer steel wire is arranged according to 20 °~40 ° of angle (relatively for circumferential direction).In the structure of fig. 1, high tensile steel silk is strong
The upper extreme point position for changing layer is higher than carcass anti-package endpoint location, in order to adapt to the Stress distribution situation in this region, this knot
Strengthening layer steel wire in structure upholds steel wire usually using high.
Fig. 2 is the ruptured type that relatively common carcass anti-package region compared with hyperbar, high load occurs.
This kind of destruction is characterized in: being usually rupture starting point with carcass anti-package endpoint, is the life after deflecting deformation of this region experience repeatedly
At shearing force caused by rupture, often appear in the mid-term of tire used.But with the transport form of China gradually from
Short-distance transport is changed into high speed and transports for long-distance, and the load of tire is opposite to be reduced, and use intensity reduces, previously described this rupture
Form also gradually tails off.But at the same time, in the latter stage of Life of Tyre, and the stage of primary renovation, secondary renovation, together
Sample is ruptured as caused by the shearing force in anti-package region to be appeared on the position of steel wire strengthening layer upper extreme point, and fracture pattern is in umbrella
Shape is shown in Fig. 3.
Summary of the invention
In order to solve the above technical problems, the purpose of the utility model is to provide a kind of load-carrying Pneumatic belt wheels
Tire, the utility model are able to solve steel wire strengthening layer upper extreme point splintering problem described above and due between carcass ply steel wires
Cause carcass ply intensity to be weakened problem away from variation, not only effectively enhances the anti-load intensity of product, but also promote durability.
In order to achieve the above purpose, the utility model uses technical solution below:
A kind of load-carrying Pneumatic belt tire, the body piles of the tire are layer of steel wire casing plies, out of wire loop
It is lateral to wrap wire loop down and then outward, anti-package is completed on the outside of wire loop, and anti-package region overlay is provided with wirecord fabric
Strengthening course；Wirecord fabric strengthening course is made of the first steel wire strengthening course and the second steel wire strengthening course, the steel of the first steel wire strengthening course
Silk uses the steel wire of tensionless winkler foundation characteristic, and the steel wire of the second steel wire strengthening course uses the steel wire of high tensile properties；First steel wire reinforcement
Layer is located on the inside of tyre bead, at least covers wire loop side and the upper extreme point higher than the second steel wire strengthening course, and the first steel wire is mended
The upper extreme point of strong layer range of (e) at a distance from the second steel wire strengthening course is 8mm~15mm；Second steel wire strengthening course at least covers
Firmly wire loop side and body piles anti-package endpoint, and height than body piles anti-package endpoint closer to sidewall rubber, body piles anti-package
Endpoint range of (a) at a distance from above-mentioned second steel wire strengthening course endpoint is 12mm~20mm；First steel wire strengthening course and second
The lower extreme point of steel wire strengthening course mutually overlaps, and junction position is located at the wire loop inner side of tire, lap width (f)
15mm-20mm；The endpoint of second steel wire strengthening course covers protective rubber, and the protectiveness rubber and wirecord fabric are cladded with glue
There are following relationships between overall thickness (d) and the steel wire diameter (c) of wirecord fabric: d=(2.5~5) × c；And the protectiveness
Rubber is upwardly extended from wirecord fabric endpoint, and decrescence, elongation (b) is within the scope of 8mm~35mm for thickness.
As a further improvement, the steel wire of the first steel wire strengthening course and the second steel wire strengthening course is pressed by complex root
According to the steel strand composition that certain lay pitch is twisted, it is made of complex root according to the finer wire that certain lay pitch is twisted per one steel wire, the
The fracture tensile strength of one steel wire strengthening course wire material is drawn in 1600N or more, the fracture of the second steel wire strengthening course wire material
Rate is stretched 5% or more.
As a further improvement, the arrangement angle of the steel wire of the first steel wire strengthening course and the second steel wire strengthening course
Range can be 20 °~45 °.
As a further improvement, the first steel wire strengthening course wirecord fabric upholds inflection point using amorphousness.Second
The structural extension of steel wire strengthening course wirecord fabric is 2.0%~3.0%, preferably 2.5%.
As a further improvement, the lower extreme point position of the first steel wire strengthening course and the second steel wire strengthening course is not higher than
The tire of tyre bead calls in person (5h).
As a further improvement, the steel wire of the wirecord fabric of the first steel wire strengthening course and the second steel wire strengthening course is straight
Diameter is within the scope of 0.8mm~1.40mm.First steel wire strengthening course uses No. 7 steel wires, and the second steel wire strengthening course uses No. 4 steel wires.
As a further improvement, covering glue outside the wirecord fabric of the first steel wire strengthening course and the second steel wire strengthening course
100% modulus within the scope of 0.38MPa~4.8MPa.
As a further improvement, the upper extreme point of the first steel wire strengthening course is at a distance from the second steel wire strengthening course (e)
Range be 10mm~13mm；Body piles anti-package endpoint range of (a) at a distance from above-mentioned second steel wire strengthening course endpoint is
12mm~16mm；Elongation (b) is within the scope of 12mm~28mm.
As a further improvement, 100% modulus of the protectiveness rubber, which is equal to or less than wirecord fabric, is cladded with glue
100% modulus.
As shown in figure 3, the umbrella rupture that the steel wire strengthening layer upper extreme point on the outside of carcass anti-package occurs is mainly by steel
Tension strain on silk strengthening layer extending direction dominates.As shown in fig. 6, in order to control the spacing of tyre bead inboard portion body cord
Change, the intensity of carcass ply is prevented to be weakened.In the present invention, by tyre bead inboard portion and carcass anti-package
Outside uses the wirecord fabric strengthening layer of two kinds of different stretch characteristics.On the one hand pass through body cord spacing on the inside of control tyre bead
Variation, it is therefore prevented that the intensity of carcass ply is weakened.On the other hand, by changing strengthening layer steel wire at carcass anti-package endpoint
Stretch characteristics make it still be able to realize biggish extension under low stress, make steel wire strengthening layer by extension described previously
It can relatively easily be followed when strain, to mitigate the strain near strengthening layer upper extreme point, improve tyre last.
Detailed description of the invention
Fig. 1 is the load-carrying Pneumatic belt tire sectional schematic diagram that the utility model is applicable in.
Fig. 2 is that tyre bead damages example.
Fig. 3 is that tyre bead damages example and steel wire strengthening layer upper extreme point Strain Distribution concept map nearby, and arrow expression should become larger
Small, dotted line indicates strain region.
Fig. 4 is case study on implementation schematic diagram.
Fig. 5 is elongation-curve of load chart of all-steel cord.
Fig. 6 is the steel wire arrangement schematic diagram of tyre bead inboard portion carcass ply and steel wire strengthening layer.
Symbol description
1, tire section schematic diagram；
2, wire loop；
3, body piles；
4, the second steel wire strengthening layer；
4a, the second steel wire strengthening layer upper extreme point；
4b, the second steel wire strengthening layer lower extreme point；
5, bead base；
5h, bead base tire heel position；
5t, bead base tire toe position；
6, encapsulated；
7, the first steel wire strengthening layer；
7a, the first steel wire strengthening layer upper extreme point；
7b, the first steel wire strengthening layer lower extreme point；
8, tyre bead inboard portion body cord spacing.
Specific embodiment
Specific embodiment of the present utility model is made a detailed explanation with reference to the accompanying drawing.
Fig. 4 is the sectional schematic diagram of the load-carrying Pneumatic belt tire of the utility model.Fig. 5 is the utility model steel wire
Tension-stretch characteristics the curve for two kinds of wire materials that strengthening layer uses.
In Fig. 4,1 it is tyre bead, 2 is wire loop, 3 is carcass, 7 is the first steel wire strengthening layer, 4 second steel wire strengthening layers.Tire
Body layer is circumferentially made of by 90 ° of arranging steel wire cords complex root along tire, on the outside of wire loop inside anti-package to wire loop.Tire
There is the first steel wire strengthening course 7 in circle inside, and the lower extreme point position of strengthening layer is called in person (5h) not higher than the tire of tyre bead, and upper extreme point is higher than first
7 upper extreme point of steel wire strengthening course.There is the second steel wire strengthening course 4 on the outside of carcass turn-up position, the lower extreme point position of strengthening layer is not high
It calls in person (5h) in the tire of tyre bead, upper extreme point is higher than carcass anti-package endpoint.And two kinds of steel wire strengthening layers have centainly in lower extreme point position
The overlap joint of width, lap position are located at wire loop inner side, and lap width (f) is controlled in 15mm-20mm.
The tension of strengthening layer steel wire-stretch characteristics curve is as shown in figure 5, point of inflexion on a curve is postponed by traditional extension 2%
To 2.5% and 3.0%, most ideal value is 2.5%, realizes that steel wire can be generated more in the case where being acted on by pre-stress with this
Structural extension.The structural stretch characteristics of steel wire depend on the twirl for being twisted angle (α) and each steel strand of every finer wire
Angled (β) is twisted angle and adds up between (alpha+beta) and tension-extension knee of curve 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 stretch characteristics, so that it may so that steel wire upholds (strain) height under low-stress state, in
Extension (strain) is small under high-stress state, nonlinear strain-stress relation is showed, so that steel wire strengthening layer can be subjected to
Firmly tire prolonged use.
The range of the arrangement angle of strengthening layer steel wire can be 20 °~45 °.If selecting 20 ° or so of low-angle,
Strengthening effect to carcass anti-package end region is best, but the rupture that can encourage strengthening layer upper extreme point position occurs；And
If selecting 45 ° or so of wide-angle, although facilitating the rupture of reduction strengthening layer upper extreme point, it can also reduce to anti-simultaneously
The invigoration effect of package location.So both comprehensive superiority and inferiority, the arrangement angle of the strengthening layer steel wire selects 30 °.
Steel wire strengthening layer upper extreme point position in the utility model is also covered with section shown in Fig. 4 in fusiform strain
It mitigates rubber (also referred to as protectiveness rubber 6), can further promote tyre last.Shown in this 6 shape of protectiveness rubber and Fig. 3
Ess-strain size distribution it is consistent, 6 thickness (d) of protectiveness rubber of strengthening layer upper extreme point position and strengthening layer steel wire diameter
(c) there are following relationships: d=(2.5~5) × c.If 6 thickness of protectiveness rubber is less than 2.5 times of steel wire diameter, cannot fill
The effect for mitigating strain is waved in distribution；And if thickness is greater than 5 times of diameter, the effect for mitigating strain is no longer so obvious, and
Also it can cause the problem in production.And the protectiveness rubber 6 extends to the length (b) near sidewall rubber from strengthening layer upper extreme point
Guarantee just give full play to the effect of dispersion strain in 8mm or more.But if length (b) is more than 35mm, due to strain
The relationship of distribution, protectiveness rubber 6 can not play the effect of more dispersion strains, and can cause asking in production
Topic.
The distance (a) of carcass anti-package endpoint to 4 upper extreme point of the second steel wire strengthening course is also required to guarantee in 12mm or more, with this
Strengthening layer upper extreme point is set to avoid the shearing force acted on anti-package endpoint.But if distance (a) more than if 20mm or more,
It will increase the strain that strengthening layer itself is generated due to deflecting deformation, strengthening layer caused to rupture.First steel wire strengthening course, 7 upper extreme point arrives
Distance (e) needs of second steel wire strengthening course, 4 upper extreme point guarantee in 8mm or more, are controlled between tyre bead portion carcass ply with this
Away from variation, but if distance (e) be more than if 15mm or more, also will increase strengthening layer itself due to deflect deformation generation answer
Become, strengthening layer is caused to rupture.
Fig. 6 is that the tyre bead inboard portion body cord arrangement of common load-carrying Pneumatic belt tubeless tyre shows
It is intended to, it is generally the case that tyre bead inboard portion simultaneously cannot effectively control body cord using this high extension steel wire
The variation of spacing weakens the intensity of carcass ply instead.Therefore, in order to effectively control tyre bead inboard portion body cord spacing
Variation, the steel wire strengthening layer in this structure upholds steel wire using amorphousness.
The subjects of the present embodiment are 13R22.5, the load-carrying inflation with steel belt, steel wire carcass structure
Radial.The test tire of several different strengthening layers is made according to following scheme:
Table 1a
* diameter of the removal outer layer ring after steel wire
6 thickness (d) of protectiveness rubber of above-mentioned tire is 3.5mm, and length (b) is 22mm, carcass anti-package endpoint to second
The distance (a) of 4 upper extreme point of steel wire strengthening course is 14mm, 4 upper end of 7 upper extreme point of the first steel wire strengthening course and the second steel wire strengthening course
Point distance is 12mm, and two kinds of steel wire strengthening layer lower extreme point lap widths (e) are 20mm, and the arrangement angle of strengthening layer steel wire is 30 °.
5 kinds of test tires are made according to above scheme, carry out indoor lathe endurance test according to test method hereafter, test result is shown in
Table 1b
[indoor lathe endurance test]
Test tire is mounted on 22.5 × 9.75 wheel rim, the air pressure of 830kPa is filled with, in 30 DEG C of room temperature
Under, apply 80% load of single tire gauge load 3750kg, run in advance 10 hours with the speed of 40km/h, 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 6 of different shapes is confirmed again, is as follows:
Table 2
* is converted to index to compare the result of scheme 1 for 100
It can be seen that the first steel wire strengthening course 7 from the result of table 1b and control carcass using tensionless winkler foundation steel wire strengthening layer
The spacing of line ensure that the intensity of carcass；Second steel wire strengthening course 4 uses high tensile steel silk strengthening layer, and structure of steel wire is upheld
Ability enhanced.Two kinds of steel wire strengthening layers use simultaneously, and durability is used better than single steel wire strengthening layer；Carcass anti-package position
The tension for the steel wire strengthening layer steel wire set-extension knee of curve from 2% postpone till 2.5% and 3% after, structure of steel wire uphold
Ability is enhanced, and durability performs better than.And the experiment results proved of table 2,6 thickness (d) of protectiveness rubber and length (b) are only
Want to meet the Strain Distribution situation near strengthening layer endpoint, it will be able to significantly promote durability.Certainly, protectiveness herein
Rubber 6 is needed using the rubber compounding for covering glue same type with strengthening layer, and 100% modulus will be covered equal to or slightly lower than strengthening layer
Glue, the effect that can just give full play of dispersion, absorb strain, so it 100% will be controlled within the scope of 0.38~4.8MPa.
In the case study on implementation, the lower extreme point of two kinds of steel wire strengthening layers has the overlap joint of one fixed width, and lap-joint is located at steel wire
Inner side is enclosed, tire heel position (5h) is no more than, lap width (f) is controlled in 15mm-20mm.
Claims (10)
1. the body piles (3) of a kind of load-carrying Pneumatic belt tire, the tire are downwards and then outside from the inside of wire loop (2)
Wire loop (2) are wrapped, anti-package is completed on the outside of wire loop (2), anti-package region overlay is provided with wirecord fabric strengthening course；Its
It is characterized in that, wirecord fabric strengthening course is made of the first steel wire strengthening course (7) and the second steel wire strengthening course (4), and the first steel wire is mended
The steel wire of strong layer (7) uses the steel wire of tensionless winkler foundation characteristic, and the steel wire of the second steel wire strengthening course (4) uses the steel of high tensile properties
Silk；First steel wire strengthening course (7) is located on the inside of tyre bead, at least covers wire loop (2) side and is higher than the second steel wire reinforcement
The upper extreme point (4a) of layer (4), the upper extreme point (7a) of the first steel wire strengthening course (7) (e) at a distance from the second steel wire strengthening course (4)
Range is 8mm~15mm；Second steel wire strengthening course (4) at least covers wire loop (2) side and body piles (3) anti-package end
Point, and height than body piles (3) anti-package endpoint closer to sidewall rubber, body piles (3) anti-package endpoint and above-mentioned second steel wire reinforcement
The range of the distance (a) of layer (4) endpoint is 12mm~20mm；Under first steel wire strengthening course (7) and the second steel wire strengthening course (4)
Endpoint mutually overlaps, and junction position is located at wire loop (2) inner side of tire, lap width (f) 15mm-20mm；The
The endpoint of two steel wire strengthening courses (4) covers protective rubber (6), which is cladded with the total of glue with wirecord fabric
There are following relationships between thickness (d) and the steel wire diameter (c) of wirecord fabric: d=(2.5~5) × c；And the protectiveness rubber
Glue (6) is upwardly extended from wirecord fabric endpoint, and decrescence, elongation (b) is within the scope of 8mm~35mm for thickness.
2. a kind of load-carrying Pneumatic belt tire according to claim 1, which is characterized in that the first steel wire strengthening course
(7) it is made of complex root according to the steel strand that certain lay pitch is twisted with the steel wire of the second steel wire strengthening course (4), per one steel wire
It is made of complex root according to the finer wire that certain lay pitch is twisted, the fracture tensile strength of first steel wire strengthening course (7) wire material
In 1600N or more, the break-draw rate of second steel wire strengthening course (4) wire material is 5% or more.
3. a kind of load-carrying Pneumatic belt tire according to claim 1, which is characterized in that the first steel wire strengthening course
(7) and the range of the arrangement angle of the steel wire of the second steel wire strengthening course (4) can be 20 °~45 °.
4. a kind of load-carrying Pneumatic belt tire according to claim 1, which is characterized in that the first steel wire strengthening course
(7) wirecord fabric upholds inflection point using amorphousness.
5. a kind of load-carrying Pneumatic belt tire according to claim 1, which is characterized in that the first steel wire strengthening course
(7) and the lower extreme point position of the second steel wire strengthening course (4) not higher than tyre bead tire call in person (5h).
6. a kind of load-carrying Pneumatic belt tire according to claim 1, which is characterized in that the second steel wire strengthening course
(4) the structural extension of wirecord fabric is 2.0%~3.0%, preferably 2.5%.
7. a kind of load-carrying Pneumatic belt tire according to claim 1, which is characterized in that the first steel wire strengthening course
(7) and the steel wire diameter of the wirecord fabric of the second steel wire strengthening course (4) is within the scope of 0.8mm~1.40mm.
8. a kind of load-carrying Pneumatic belt tire according to claim 1, which is characterized in that the first steel wire strengthening course
(7) and 100% modulus for covering glue outside the wirecord fabric of the second steel wire strengthening course (4) is within the scope of 0.38MPa~4.8MPa.
9. a kind of load-carrying Pneumatic belt tire according to claim 1, which is characterized in that the first steel wire strengthening course
(7) upper extreme point range of (e) at a distance from the second steel wire strengthening course (4) is 10mm~13mm；Body piles (3) anti-package endpoint
The range of (a) is 12mm~16mm at a distance from above-mentioned second steel wire strengthening course (4) endpoint；Elongation (b) is in 12mm~28mm
In range.
10. a kind of load-carrying Pneumatic belt tire according to claim 1, which is characterized in that protectiveness rubber (6)
100% modulus is equal to or less than 100% modulus that wirecord fabric is cladded with glue.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820533074.5U CN208698380U (en) | 2018-04-16 | 2018-04-16 | A kind of load-carrying Pneumatic belt tire |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820533074.5U CN208698380U (en) | 2018-04-16 | 2018-04-16 | A kind of load-carrying Pneumatic belt tire |
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| Publication Number | Publication Date |
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| CN208698380U true CN208698380U (en) | 2019-04-05 |
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ID=65934077
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| CN201820533074.5U Active CN208698380U (en) | 2018-04-16 | 2018-04-16 | A kind of load-carrying Pneumatic belt tire |
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Cited By (2)
| 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 |
| CN108638757A (en) * | 2018-04-16 | 2018-10-12 | 中策橡胶集团有限公司 | A kind of load-carrying Pneumatic belt tire with double steel wire supporting material bead structures |
-
2018
- 2018-04-16 CN CN201820533074.5U patent/CN208698380U/en active Active
Cited By (3)
| 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 |
| CN108638757A (en) * | 2018-04-16 | 2018-10-12 | 中策橡胶集团有限公司 | A kind of load-carrying Pneumatic belt tire with double steel wire supporting material bead structures |
| CN108638757B (en) * | 2018-04-16 | 2024-02-13 | 中策橡胶集团股份有限公司 | Pneumatic radial tire with double steel wire reinforced material bead structure for load carrying |
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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. |