CN208290861U - A kind of flat 70 or less serial heavy duty pneumatic radial tire - Google Patents
A kind of flat 70 or less serial heavy duty pneumatic radial tire Download PDFInfo
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- CN208290861U CN208290861U CN201820532837.4U CN201820532837U CN208290861U CN 208290861 U CN208290861 U CN 208290861U CN 201820532837 U CN201820532837 U CN 201820532837U CN 208290861 U CN208290861 U CN 208290861U
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Abstract
The utility model relates to tire arts, more particularly to a kind of flat 70 or less serial heavy duty pneumatic radial tire.A kind of flat 70 or less serial heavy duty pneumatic radial tire, the belt of the tire includes at least 2 layers or more the tension belts intersected, the first zero-degree belt and the second zero-degree belt, first zero-degree belt is covered on two end regions of tension belt, and the second zero-degree belt is covered on the bizet center of tension belt；The amorphousness of first zero-degree belt wirecord fabric is upheld between 0.8%-1.2%, and the structural extension of the second zero-degree belt wirecord fabric is 2.0%.The utility model is by adjusting the shoulder of bizet and tension-stretch characteristics of 0 degree of center belt steel wire, differential tension-stretch characteristics wire material is selected in shoulder and hat center, it can effectively guarantee that the later period still is able to realize biggish extension balance tire under steam, expansion and tension to balanced (or reduction) bizet belt, improve tyre last and wear hardness.
Description
Technical field
The utility model relates to tire arts, more particularly to a kind of flat 70 or less serial heavy duty pneumatic radial wheel
Tire.
Background technique
In recent years, reuse Pneumatic belt tire is uploaded in Chinese market rapidly realize flattening.And it is carrying
In the development for reusing 70 or less radial of flat ratio, good endurance quality can be developed, be reasonably grounded shape
Low flat tire is always one of the difficult point of tire enterprise research of technique.This most of to live through European & American Market test
The significant problem that technology is but easy to appear durability deficiency and easily grinds in China.
The most commonly used is zero degrees for traditional low flat tire, especially heavily loaded low flat radial tire undertread structure
Structure, the belt structure of the tension layer composition of at least two layers intersection fitting in carcass outside, but its ground connection shape is easy out
Existing " dumbbell shape " shape, influence tire resistance to eccentric wear and resistance to performance of waiting so long.The belt structure of latest report, by least
2 layers or more the tension belts intersected, and the zero-degree belt composition in covering 2 layers of tension belt ends region fill
Gas radial.And the zero-degree belt structure at least one layer or more of bizet center is composed.
Applicant has applied for that Chinese invention patent (CN201710827551.9) discloses a kind of Pneumatic belt tire, should
Tire includes body piles, tread ply and belt, and the belt includes at least two layers or more the tension banding intersected
Layer, two end regions of tension belt, which are covered each by, is provided with two layers of first zero-degree belts, and tension belt exists
Covering is provided with two groups one layer or more of the second zero-degree belt in the middle part of bizet.By above structure, solves existing nullity belt
The problems such as bizet intermediate expansions of beam layer structure are big, belt displacement is changed greatly, causes the undesirable influence of Life of Tyre.
It is effectively controlled tire ground connection profile deformation and the variation of belt displacement, that is, wear hardness decline is asked after solving traveling
Topic, and realize the heavy duty pneumatic radial tire for improving endurance quality.
Applicant has applied for that Chinese invention patent (CN201710828704.1) discloses a kind of inflation of excellent durability
Radial, the tire include body piles, tread ply and belt, and the belt intersects including at least two layers or more
Tension belt, two end regions of tension belt, which are covered each by, is provided with two layers of first zero-degree belts, resistance to
Tension belt covers in the middle part of bizet is provided with one group one layer or more of the second zero-degree belt.By above structure, solve
The bizet intermediate expansions of existing zero-degree belt structure are big, the variation of belt displacement greatly the problems such as, cause the tire used longevity
Order undesirable influence.It is effectively controlled tire ground connection profile deformation and the variation of belt displacement, that is, is ground after solving traveling
Degradation problem is consumed, and realizes the heavy duty pneumatic radial tire for improving endurance quality.
And 70 heavy duty tires below are located to aspect ratio, and zero-degree belt structure is stated in use, it is good except that should have
, outside reasonable ground connection shape, should also effectively prevent the traveling middle and later periods from anti-arch problem easily occur, easily grind problem, and then be promoted
Endurance quality and wear hardness decline, extend the service life of product.As shown in figure 3, being followed by the anti-of contoured appearance in traveling
The problems such as arc shape and endurance quality decline, mainly the extension rate as suffered by the belt of tire in tyre vulcanization rear mold
Difference, caused by tension suffered by the shoulder of bizet and center is unbalanced.
Summary of the invention
In order to achieve the above purpose, the purpose of the utility model is to provide a kind of flat 70 or less serial heavy duty pneumatics
Radial, the utility model by adjusting the shoulder of bizet and tension-stretch characteristics of 0 degree of center belt steel wire,
Differential tension-stretch characteristics wire material is selected at shoulder and hat center, and capable of effectively guaranteeing tire, the later period is still under steam
It so can be realized biggish extension balance, so that expansion and the tension of balanced (or reduction) bizet belt, improve tyres durable
Property and wear hardness.
In order to achieve the above purpose, the utility model uses technical solution below:
A kind of flat 70 or less serial heavy duty pneumatic radial tire, the belt of the tire include at least 2 layers with
Tension belt, the first zero-degree belt and the second zero-degree belt of upper intersection, the first zero-degree belt covering
In two end regions of tension belt, the second zero-degree belt is covered on the bizet center of tension belt；It is special
Sign is, the steel strand that the steel wire of the first zero-degree belt and the second zero-degree belt is twisted by complex root according to certain lay pitch
Composition is made of complex root according to the finer wire that certain lay pitch and certain angle are twisted, the break-draw of steel wire per one steel wire
Rate is 3% or more；The amorphousness of first zero-degree belt wirecord fabric upholds the second zero degree between 0.8%-1.2%
The structural extension of belt wirecord fabric is 2.0%.
Preferably, it is 1.0% that the amorphousness of the first zero-degree belt wirecord fabric, which is upheld,.
Preferably, the material of the first zero-degree belt steel wire is 1 × 6 × 0.265HE；Second zero-degree belt
The material of steel wire is 3 × 4 × 0.22HE.
Preferably, second zero-degree belt is one group and at least one layer.
Preferably, second zero-degree belt is two groups and at least one layer.
Preferably, the steel wire diameter of first zero-degree belt and the second zero-degree belt 0.8mm~
1.40mm in range.
In the present invention, by adjusting tension-stretch characteristics of the shoulder of bizet and 0 degree of center belt steel wire,
Differential tension-stretch characteristics wire material is selected in shoulder and hat center, after capable of capable of effectively guaranteeing tire under steam
Phase still is able to realize biggish extension balance, so that expansion and the tension of balanced (or reduction) bizet belt, improve tire
Durability and wear hardness.
Detailed description of the invention
Fig. 1: the enlarged cross-sectional view near 1 fetus face of case study on implementation of the Pneumatic belt tire of the utility model.
Fig. 2: the enlarged cross-sectional view near 1 fetus face of case study on implementation of the Pneumatic belt tire of the utility model.
The tension of Fig. 3: 0 degree of belt steel wire-stretch characteristics curve graph.
Fig. 4: indoor durable test standard (enterprises use).
Fig. 5: mark outline drawing is grounded before comparison pneumatic tire traveling and after traveling 8000km.
Fig. 6: mark outline drawing is grounded before the utility model pneumatic tire traveling and after traveling 8000km.
Description of symbols: 1-- Pneumatic belt tire；2-- body piles；3-- intersects tension belt；4-- first
Zero-degree belt；The second zero-degree belt of 5--；6-- belt；7-- tread ply；8-- crown areas；A-- traveling front tyre connects
Ground mark illustrates profile；Ground connection mark illustrates profile after B-- travels 8000km.
Specific embodiment
A detailed description is done to specific embodiment of the present utility model with reference to the accompanying drawing:
By taking 275/70R22.5 as an example, by the various various combinations of the first zero-degree belt and the second zero-degree belt into
Row test of many times, the results showed that, the belt structure of the utility model tire can only keep being grounded shape before and after tyre inflating use
The stabilization of shape and endurance quality.
The Pneumatic belt tire 1 of the utility model is circumferentially to arrange at 90 degree between the steel wire of two sides with one layer
Steel wire body piles 2 are skeleton, stacked above one another setting belt 6 and tyre surface on the outside of the tire radius direction of the body piles 2
Layer 7 forms.
In the present invention, belt 3 includes 2 layers or more the tension belt intersected compositions, and belt 3 is located at
Body piles 2 are on skeleton；First zero-degree belt 4 is located at 3 end position of belt (consistent with existing 0 degree of structure).Also, the
Two zero-degree belts 5 are that by one group (or two groups) and at least one layer or more 0 degree of belt forms, tension of the position in intersection
On belt 3, between two first zero-degree belts 4.
Wherein, it is 1.0% (i.e. under low stress that 4 steel wire of the first zero-degree belt, which selects tension-stretch characteristics point of inflexion on a curve,
Extension can reach 1 × 6 × 0.265HE of wire material 1.0%)；
Second zero-degree belt, 5 steel wire selects tension-stretch characteristics point of inflexion on a curve (to uphold under low stress for 2.0%
It can reach 3 × 4 × 0.22HE of wire material 2.0%)；
In Fig. 1, amplification indicates the sectional view near the fetus face of the case study on implementation 1 of the utility model.
Second zero-degree belt 5 is that by one group and at least one layer or more 0 degree of belt forms, strain insulator of the position in intersection
On power belt 3, between two first zero-degree belts 4.
In Fig. 2, amplification indicates the sectional view near the fetus face of the case study on implementation 2 of the utility model.
Second zero-degree belt 5 is that by two groups and at least one layer or more 0 degree of belt forms, strain insulator of the position in intersection
On power belt 3, between two first zero-degree belts 4.
As a comparison, while preparing the first zero-degree belt 4, the second 5 steel wire tensions of zero-degree belt-stretch characteristics curve
Inflection point is 2% comparative tire.
Fig. 3 is the tension-stretch characteristics curve comparison figure of 0 degree of belt steel wire of the utility model tire and comparative tire.
Implementation result:
It is illustrated in fig. 2 shown below, is 0 degree of belt structure of the utility model, traditional 0 degree of belt structure and two parts respectively
0 degree of belt is grounded mark figure, test rule using the tyre surface before the traveling of the belt structure of same wire material and after traveling
Lattice are the Pneumatic belt tires of 275/70R22.5.
[case study on implementation]
Subjects are 275/70R22.5, the load-carrying Pneumatic belt with steel belt, steel wire carcass structure
Tire.The test tire needed according to the production of following different embodiments:
Table 1a
[indoor lathe endurance test]
Test tire is mounted on 22.5 × 8.25 wheel rim, standard pressure 930kPa, gauge load 355kg, 30
DEG C room temperature under, tested by Fig. 4 test method, until damaged tyres.
Table 1b
| Durability (index) | Damage phenomenon | |
| Case study on implementation 1 | 137h | No. 2 belt steel wire endpoint location umbrella ruptures |
| Case study on implementation 2 | 135h | No. 2 belt steel wire endpoint location umbrella ruptures |
| Compare scheme 3 | 116h | No. 2 belt steel wire endpoint location umbrella ruptures |
The setting of test speed and test temperature is excessive heat in order to avoid tire due to tyre surface as far as possible to causing to take turns
Tire damage, it is ensured that can really reflect that the endurance quality of crown member is horizontal.
Indoor endurance quality experimental test, the durable water in the interior of case study on implementation 1 and case study on implementation 2 are carried out to these three structures
It puts down to be higher than and compares scheme 3, it is more than high 15% level, the indoor durability level of case study on implementation 1 and the level basic one of case study on implementation 2
It causes.Therefore, the indoor endurance quality testing level of 0 degree of belt structure of the utility model is substantially better than 0 degree of belt of comparison
Infrastructure product, and testing program 1 is better than testing program 2, more convenient operation in technique realization.
[indoor lathe comparison shape acquisition test]
Test tire is mounted on 22.5 × 8.25 wheel rim, the air pressure of 930kPa is filled with, in 30 DEG C of room temperature
Under, apply 80% load of single tire gauge load 3550kg, 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, carries out durable test experiment.Tire is acquired after tire running 8000km
It is grounded mark.And need to acquire the ground connection mark of pneumatic tire before testing, as shown in Figure 5,6.
In summary comparison is found out, in the Pneumatic belt tire of test, expands among the tyre surface ground connection mark figure of tire
, the tyre surface of 0 degree of belt structure of the utility model is grounded mark figure entirety uniform expansion, and the property later period, anti-arc phenomenon reduced,
Even disappear.Product can be improved using the Pneumatic belt tire of 0 degree of belt structure of the utility model by, which confirming, is expert at
Wear hardness after making, traveling front and back ground connection shape are more stable.
Claims (6)
1. a kind of flat 70 or less serial heavy duty pneumatic radial tire, the belt of the tire includes at least 2 layers or more
Tension belt, the first zero-degree belt and the second zero-degree belt of intersection, first zero-degree belt are covered on
Two end regions of tension belt, the second zero-degree belt are covered on the bizet center of tension belt；Its feature
It is, the steel wire of the first zero-degree belt and the second zero-degree belt is made of the steel strand that complex root is twisted, per one steel
Silk is made of the finer wire that complex root is twisted, and the break-draw rate of steel wire is 3% or more；First zero-degree belt wirecord fabric
Amorphousness uphold for 0.8%-1.2% between, the structural extension of the second zero-degree belt wirecord fabric is 2.0%.
2. the serial heavy duty pneumatic radial tire of one kind flat 70 or less according to claim 1, which is characterized in that the
It is 1.0% that the amorphousness of one zero-degree belt wirecord fabric, which is upheld,.
3. the serial heavy duty pneumatic radial tire of one kind flat 70 or less according to claim 1, which is characterized in that the
The material of one zero-degree belt steel wire is 1 × 6 × 0.265HE；The material of second zero-degree belt steel wire is 3 × 4 × 0.22HE.
4. the serial heavy duty pneumatic radial tire of one kind flat 70 or less according to claim 1, which is characterized in that the
Two zero-degree belts are one group and at least one layer.
5. the serial heavy duty pneumatic radial tire of one kind flat 70 or less according to claim 1, which is characterized in that the
Two zero-degree belts are two groups and at least one layer.
6. the serial heavy duty pneumatic radial tire of one kind flat 70 or less according to claim 1, which is characterized in that the
The steel wire diameter of one zero-degree belt and the second zero-degree belt is within the scope of 0.8mm~1.40mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820532837.4U CN208290861U (en) | 2018-04-16 | 2018-04-16 | A kind of flat 70 or less serial heavy duty pneumatic radial tire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820532837.4U CN208290861U (en) | 2018-04-16 | 2018-04-16 | A kind of flat 70 or less serial heavy duty pneumatic radial tire |
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| Publication Number | Publication Date |
|---|---|
| CN208290861U true CN208290861U (en) | 2018-12-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820532837.4U Active CN208290861U (en) | 2018-04-16 | 2018-04-16 | A kind of flat 70 or less serial heavy duty pneumatic radial tire |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108422811A (en) * | 2018-04-16 | 2018-08-21 | 中策橡胶集团有限公司 | A kind of flat 70 or less serial heavy duty pneumatic radial tire |
-
2018
- 2018-04-16 CN CN201820532837.4U patent/CN208290861U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108422811A (en) * | 2018-04-16 | 2018-08-21 | 中策橡胶集团有限公司 | A kind of flat 70 or less serial heavy duty pneumatic radial tire |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| 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. |
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| CP03 | Change of name, title or address |