CN108422811A - 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
- Publication number
- CN108422811A CN108422811A CN201810336258.7A CN201810336258A CN108422811A CN 108422811 A CN108422811 A CN 108422811A CN 201810336258 A CN201810336258 A CN 201810336258A CN 108422811 A CN108422811 A CN 108422811A
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- Prior art keywords
- belt
- zero
- degree
- tension
- tire
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
- B60C9/18—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
- B60C9/18—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers
- B60C2009/1828—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers characterised by special physical properties of the belt ply
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Tires In General (AREA)
Abstract
The present invention relates to tire art more particularly to a kind of flat 70 or less serial heavy duty pneumatic radial tires.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 in two end regions of tension belt, and the second zero-degree belt is covered in the bizet center of tension belt；The amorphousness of first zero-degree belt wirecord fabric is upheld be 0.8% 1.2% between, the structural extension of the second zero-degree belt wirecord fabric is 2.0%.The present invention by adjusting the shoulder and 0 degree of center belt steel wire of bizet tensile elongation characteristic, the wire material of differential tension stretch characteristics is selected in shoulder and hat center, it can effectively ensure that the later stage remains able to realize larger extension balance tire under steam, expansion to balanced (or reduction) bizet belt and tension, improve tyre last and wear hardness.
Description
Technical field
The present invention relates to tire art more particularly to a kind of flat 70 or less serial heavy duty pneumatic radial tires.
Background technology
In recent years, it uploads reuse Pneumatic belt tire in Chinese market and rapidly realizes 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 susceptible to 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 at least two layers tension layer composition for intersecting fitting in carcass outside, but it is grounded shape and is easy out
Existing " dumbbell shape " shape, influences the resistance to eccentric wear of tire 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 2 layers of tension belt ends region of covering 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, solves wear hardness decline after travelling and asks
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 rational ground connection shape, should also effectively prevent the traveling middle and later periods from anti-arch problem easily occur, easily grinding problem, and then promoted
Endurance quality and wear hardness decline, and 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 due to the extension rate suffered by the belt of tire in tyre vulcanization rear mold
Difference, the shoulder of bizet and the tension suffered by center are unbalanced caused.
Invention content
In order to achieve the above purpose, the object of the present invention is to provide a kind of flat 70 or less serial heavy duty pneumatic meridians
Line wheel tire, the present invention by adjusting the shoulder and 0 degree of center belt steel wire of bizet tension-stretch characteristics, in shoulder and hat
The wire material of differential tension-stretch characteristics is selected at center, can effectively ensure that the later stage remains able to reality to tire under steam
Existing larger extension balance, the expansion to balanced (or reduction) bizet belt and tension, improve tyre last and abrasion
Performance.
In order to achieve the above purpose, present invention employs technical solutions 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, first zero-degree belt covering
In two end regions of tension belt, the second zero-degree belt is covered in 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 is upheld between 0.8%-1.2%, the second zero degree
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, in shoulder
The wire material of differential tension-stretch characteristics is selected at portion and hat center, and capable of capable of effectively ensureing tire, the later stage is still under steam
It can so realize larger extension balance, the expansion to balanced (or reduction) bizet belt and tension improve tyres durable
Property and wear hardness.
Description of the drawings
Fig. 1：Enlarged cross-sectional view near 1 fetus face of case study on implementation of the Pneumatic belt tire of the present invention.
Fig. 2：Enlarged cross-sectional view near 1 fetus face of case study on implementation of the Pneumatic belt tire of the present invention.
Fig. 3：The tension of 0 degree of belt steel wire-stretch characteristics curve graph.
Fig. 4：Indoor durable test standard (enterprises use).
Fig. 5：It compares before pneumatic tire travels and is grounded mark outline drawing after traveling 8000km.
Fig. 6：It is grounded mark outline drawing before pneumatic tire traveling of the present invention and after traveling 8000km.
Reference sign：1-- Pneumatic belt tires；2-- body piles；3-- intersects tension belt；4-- first
Zero-degree belt；The second zero-degree belts of 5--；6-- belts；7-- tread plies；8-- crown areas；A-- traveling front tyres connect
Ground mark illustrates profile；Ground connection mark illustrates profile after B-- travels 8000km.
Specific implementation mode
A detailed description is done to the specific implementation mode of the present invention below in conjunction with the accompanying drawings：
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 tire of the present invention tyre inflating can only be kept using front and back ground connection shape and
The stabilization of endurance quality.
The Pneumatic belt tire 1 of the present invention is the steel wire circumferentially to be arranged at 90 degree with one layer between the steel wire of both sides
Body piles 2 be skeleton, on the outside of the tire radius direction of the body piles 2 stacked above one another setting belt 6 and tread ply 7 and
At.
In the present invention, belt 3 includes 2 layers or more the tension belt intersected compositions, and belt 3 is located at carcass
Layer 2 is on skeleton；First zero-degree belt 4 is located at 3 end position of belt (consistent with existing 0 degree of structure).Also, the 2nd 0
Degree belt 5 is that by one group (or two groups) and at least one layer or more 0 degree of belt forms, tension banding of the position in intersection
On layer 3, between two first zero-degree belts 4.
Wherein, 4 steel wire of the first zero-degree belt selects tension-stretch characteristics point of inflexion on a curve for 1.0% (i.e. under low stress
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 be upheld 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 present invention.
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 present invention.
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 tire of the present invention and comparative tire.
Implementation result：
It is illustrated in fig. 2 shown below, is 0 degree of belt structure, traditional 0 degree of belt structure and two 0 degree of parts of the invention respectively
Belt is grounded mark figure using the tyre surface before the traveling of the belt structure of same wire material and after traveling, and test specification is
The Pneumatic belt tire 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 experiment tire needed is made according to following different embodiments：
Table 1a
【Indoor lathe endurance test】
Experiment tire on 22.5 × 8.25 wheel rim, standard pressure 930kPa, gauge load 355kg, 30
DEG C indoor temperature under, tested by Fig. 4 test methods, 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 to avoid tire since the excessive heat of tyre surface is to causing to take turns as possible
Tire damages, 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 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 invention is substantially better than 0 degree of belt structure of comparison
Product, and testing program 1 is better than testing program 2, more convenient operation in technique realization.
【Indoor lathe comparison shape acquisition experiment】
Experiment tire on 22.5 × 8.25 wheel rim, it is filled with the air pressure of 930kPa, in 30 DEG C of indoor temperature
Under, apply 80% load of single tire gauge load 3550kg, is run 10 hours, run through into advance after-applied in advance with the speed of 40km/h
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 experiment, expands among the tyre surface ground connection mark figure of tire
, the tyre surface of of the invention 0 degree of belt structure is grounded mark figure entirety uniform expansion, and the property later stage, anti-arc phenomenon reduced, even
It disappears.Confirm that the Pneumatic belt tire of 0 degree of belt structure using the present invention can improve mill of the product after enforcement
It is more stable to travel front and back ground connection shape for consumption energy.
Claims (6)
1. the belt of a kind of flat 70 or less serial heavy duty pneumatic radial tire, 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 in
Two end regions of tension belt, the second zero-degree belt are covered in 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. a kind of flat 70 or less serial heavy duty pneumatic radial tire 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. a kind of flat 70 or less serial heavy duty pneumatic radial tire 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. a kind of flat 70 or less serial heavy duty pneumatic radial tire according to claim 1, which is characterized in that the
Two zero-degree belts are one group and at least one layer.
5. a kind of flat 70 or less serial heavy duty pneumatic radial tire according to claim 1, which is characterized in that the
Two zero-degree belts are two groups and at least one layer.
6. a kind of flat 70 or less serial heavy duty pneumatic radial tire 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 |
|---|---|---|---|
| CN201810336258.7A CN108422811A (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 |
|---|---|---|---|
| CN201810336258.7A CN108422811A (en) | 2018-04-16 | 2018-04-16 | A kind of flat 70 or less serial heavy duty pneumatic radial tire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108422811A true CN108422811A (en) | 2018-08-21 |
Family
ID=63161101
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810336258.7A Pending CN108422811A (en) | 2018-04-16 | 2018-04-16 | A kind of flat 70 or less serial heavy duty pneumatic radial tire |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108422811A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109109574A (en) * | 2018-08-23 | 2019-01-01 | 中策橡胶集团有限公司 | Load-carrying Pneumatic belt tire |
| CN109895561A (en) * | 2019-03-20 | 2019-06-18 | 中策橡胶集团有限公司 | Pneumatic radial tire for heavy load |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050016654A1 (en) * | 2003-07-24 | 2005-01-27 | Naoki Yukawa | Pneumatic radial tire |
| CN101479116A (en) * | 2006-06-29 | 2009-07-08 | 株式会社普利司通 | Pneumatic radial tire for heavy load |
| CN101927663A (en) * | 2010-06-30 | 2010-12-29 | 杭州零度轮胎技术有限公司 | Novel tire and production process thereof |
| CN107415595A (en) * | 2017-09-14 | 2017-12-01 | 中策橡胶集团有限公司 | A kind of Pneumatic belt tire |
| CN107471920A (en) * | 2017-09-14 | 2017-12-15 | 中策橡胶集团有限公司 | A kind of Pneumatic belt tire of excellent durability |
| CN208290861U (en) * | 2018-04-16 | 2018-12-28 | 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 CN201810336258.7A patent/CN108422811A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050016654A1 (en) * | 2003-07-24 | 2005-01-27 | Naoki Yukawa | Pneumatic radial tire |
| CN101479116A (en) * | 2006-06-29 | 2009-07-08 | 株式会社普利司通 | Pneumatic radial tire for heavy load |
| CN101927663A (en) * | 2010-06-30 | 2010-12-29 | 杭州零度轮胎技术有限公司 | Novel tire and production process thereof |
| CN107415595A (en) * | 2017-09-14 | 2017-12-01 | 中策橡胶集团有限公司 | A kind of Pneumatic belt tire |
| CN107471920A (en) * | 2017-09-14 | 2017-12-15 | 中策橡胶集团有限公司 | A kind of Pneumatic belt tire of excellent durability |
| CN208290861U (en) * | 2018-04-16 | 2018-12-28 | 中策橡胶集团有限公司 | A kind of flat 70 or less serial heavy duty pneumatic radial tire |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109109574A (en) * | 2018-08-23 | 2019-01-01 | 中策橡胶集团有限公司 | Load-carrying Pneumatic belt tire |
| CN109895561A (en) * | 2019-03-20 | 2019-06-18 | 中策橡胶集团有限公司 | Pneumatic radial tire for heavy load |
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| CB02 | Change of applicant information |
Address after: 310018 No. 1, No. 1 Street, Qiantang District, Hangzhou, Zhejiang Applicant after: Zhongce Rubber Group Co.,Ltd. Address before: 310018 No.1 street, Xiasha economic and Technological Development Zone, Hangzhou City, Zhejiang Province Applicant before: ZHONGCE RUBBER GROUP Co.,Ltd. |
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| CB02 | Change of applicant information |