CN101596841B - Pneumatic tyre - Google Patents
Pneumatic tyre Download PDFInfo
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- CN101596841B CN101596841B CN2009100153896A CN200910015389A CN101596841B CN 101596841 B CN101596841 B CN 101596841B CN 2009100153896 A CN2009100153896 A CN 2009100153896A CN 200910015389 A CN200910015389 A CN 200910015389A CN 101596841 B CN101596841 B CN 101596841B
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- cord
- annular reinforcing
- belt
- bundle bar
- carcass plies
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Abstract
The invention discloses a pneumatic tyre comprising a tread part, a pair of side wall parts, a pad rubber part, a lining layer part, a tire cord fabric part, a tire ring part and a belt layer part; the belt layer part comprises a belt transition layer and a belt working layer, one end of the belt working layer is provided with a first annular reinforcing belt band, and the other end thereof is provided with a second annular reinforcing belt band; the composing steel wires in each annular reinforcing belt band respectively winds at least two rounds circumferentially in an overlapped way, and the arrangement intervals among the steel wire rings formed by the steel wires in each annular reinforcing belt band are increased from inward outward in sequence. The invention can better adapt the situation that the inner stress undertaken by the belt layer decreases from the crown central part to the shoulder part, the change of the bend rigidity in the width direction is generated, and can overcome the phenomena that the tire has fatigue damage, thermal destruction and the like at the belt layer end part.
Description
Technical field
The present invention relates to a kind of air-inflation tyre, more particularly, it relates to a kind of being applicable to reduce because of the caused delamination of the stress concentration at tire shoulder position the air-inflation tyre that improves in-use performance and increase the service life.
Background technology
For the autotruck radial-ply tyre of air-inflation tyre-particularly, bracing ply is main stressed member, determining the primary stress that each position of airtyred shape and tire is caused by interior pressure to a great extent, the heavy load radial tire bracing ply bears 60～75% of total stress.The cord number of plies, cord angle, density and the arrangement mode of bracing ply, the thickness of bracing ply, width and length, and cord structure that is adopted and type etc. have all determined the rigidity of bracing ply, directly influence the in-use performance of radial-ply tyre.According to the specification and the usage condition of tire, the belt structure design has been diverse trends.Domesticly the most generally cover by two-layer along the overlapping annular reinforcing bundle bar that twines two circles and form of circumferential array in wirecord fabric bracing ply limit portion.But in bearing, belt cord presses the stress that causes, in bracing ply overall with scope is uneven, reduce successively to the tire shoulder position from the crown centre, common wirecord fabric bracing ply limit portion covers by two-layer constant along the overlapping bending stiffness of annular reinforcing bundle bar on Width that twines two circles and form of circumferential array, the variation of stress be can not be suitable for, fatigue damage and heat damage produced in belt ends easily.
Summary of the invention
Task of the present invention is to solve the above-mentioned technological deficiency that prior art exists, and a kind of air-inflation tyre is provided.
Its technical solution is:
A kind of air-inflation tyre, it comprises:
One tread portion is made up of tread cap and tread base;
The pair of sidewall part;
Pad glue part comprises bracing ply pad glue and shoulder wedge;
Lining layer part comprises liner cambic horizon and air-retaining liner;
The casingply part, the casingply between two tyre beads is walked around the tyre bead anti-package laterally from the tire inboard, forms a pair of anti-package part of casingply and the base portion of the casingply between it;
Bead part comprises triangular rubber core, bead coil, bead coil encapsulate and chafer;
Belt layer part comprises band bundle cambic horizon and band bundle working lining;
End at above-mentioned band bundle working lining is provided with the first annular reinforcing bundle bar, and the other end is provided with the second annular reinforcing bundle bar; Composition steel wire in each annular reinforcing bundle bar is respectively along more than circumferential overlapping winding at least two circles, respectively forms steel wire in each annular reinforcing bundle bar and forms arrangement pitches increase successively from the inside to the outside between the bead coil.
Above-mentioned belt layer part comprises below metal-cord, process wire carcass plies and top metal-cord, and wherein below metal-cord and process wire carcass plies are formed band bundle cambic horizon, and the top metal-cord is as band bundle working lining.
In above-mentioned below metal-cord, process wire carcass plies and the top metal-cord, each steel cord trend becomes 5～30 ° of angles with the center equatorial line of tread cap, and the trend of the steel cord in the adjacent wires carcass plies is opposite; Between above-mentioned below metal-cord and the process wire carcass plies, between process wire carcass plies and the top metal-cord, and the width between below metal-cord and the top metal-cord possesses 5～20 millimeters difference level, and the width of below metal-cord is less than the width of process wire carcass plies, and the width of top metal-cord is less than the width of below metal-cord; The first annular reinforcing bundle bar is connected with the left side of top metal-cord, and the second annular reinforcing bundle bar is connected with the right side of top metal-cord, and each annular reinforcing bundle bar is wrapped on the corresponding avris of process wire carcass plies.
In above-mentioned each annular reinforcing bundle bar, the arrangement pitches between the bead coil carries out the transition to 2.5mm gradually from 0.2mm from the inside to the outside.
Above-mentioned each annular reinforcing is intrafascicular, and the composition gauge of wire is 1.02～1.80mm, and the elongation at failure of forming steel wire is between 4%～8%, and tensile strength at break is 800～2600N.
The width of above-mentioned each annular reinforcing bundle bar is 20～50mm.
In above-mentioned each annular reinforcing bundle bar, the trend of forming steel wire becomes 0 ° of angle with the center equatorial line of tread cap.
The severing angle end to end of above-mentioned each annular reinforcing bundle bar is between 30 °～45 °, and the lap of splice is 5～15mm.
The present invention takes to be respectively arranged with at band bundle working lining two ends in annular reinforcing bundle bar, the annular reinforcing bundle bar technical approach such as increase successively from the inside to the outside of the arrangement pitches between the bead coil, can adapt to bracing ply preferably and bear the situation that internal stress reduces to the tire shoulder position successively from the crown centre, bending stiffness on Width produces respective change thereupon, can overcome tire in phenomenons such as belt ends generation fatigue damage and heat damages.Make that in the tire tyre bead durability and high speed performance are improved, the lateral rigidity of tire, resistance to abrasion and road-holding property also can further improve.
Description of drawings
The invention will be further described below in conjunction with the drawings and the specific embodiments:
Fig. 1 is the integral structure principle schematic of one embodiment of the present invention, and cross section structure is shown.
Fig. 2 is the local enlarged diagram of Fig. 1, mainly shows annular reinforcing bundle bar part.
Fig. 3 is the local enlarged diagram of Fig. 1, mainly shows the composition steel wire part in the annular reinforcing bundle bar.
The specific embodiment
Referring to Fig. 1, Fig. 2 and Fig. 3, a kind of air-inflation tyre 1, it comprises a tread portion 2, pair of sidewall part 5, pad glue part 6, lining layer part 7, casingply part 8, a pair of axially spaced bead part 3 and belt layer part 4.Wherein, tread portion 2 is made up of tread cap and tread base; Pad glue part 6 comprises bracing ply pad glue and shoulder wedge; Lining layer part 7 comprises liner cambic horizon and air-retaining liner; Casingply part 8, the casingply between two tyre beads is walked around the tyre bead anti-package laterally from the tire inboard, forms a pair of anti-package part 8b of casingply and the base portion 8a of the casingply between it; Bead part 3 comprises triangular rubber core, bead coil, bead coil encapsulate and chafer; Belt layer part 4 comprises band bundle cambic horizon and band bundle working lining, above-mentioned belt layer part comprises below metal-cord 4a, process wire carcass plies 4b and top metal-cord 4c, wherein below metal-cord 4a and process wire carcass plies 4b form band bundle cambic horizon, and top metal-cord 4c is as band bundle working lining; Among above-mentioned below metal-cord 4a, process wire carcass plies 4b and the top metal-cord 4c, each steel cord trend becomes 5 °, 10 °, 15 °, 20 ° or 30 ° of angles with the center equatorial line of tread cap, and the trend of the steel cord in the adjacent wires carcass plies is opposite; Between above-mentioned below metal-cord 4a and the process wire carcass plies 4b, between process wire carcass plies 4b and the top metal-cord 4c, and the width between below metal-cord 4a and the top metal-cord 4c possesses 5,10,15 or 20 millimeters difference level, and the width of below metal-cord 4a is less than the width of process wire carcass plies 4b, and the width of top metal-cord 4c is less than the width of below metal-cord 4a.End at above-mentioned band bundle working lining is provided with the first annular reinforcing bundle bar 4d, the other end is provided with the second annular reinforcing bundle bar 4e, the first annular reinforcing bundle bar 4d is connected with the left side of top metal-cord 4c, and the first annular reinforcing bundle bar 4d is wrapped on the side of the process wire carcass plies 4b left side, the second annular reinforcing bundle bar 4e is connected with the right side of top metal-cord 4c, and the second annular reinforcing bundle bar 4e is wrapped on the side of process wire carcass plies 4b the right; Composition steel wire among the first annular reinforcing bundle bar 4d is respectively along more than circumferential overlapping winding at least two circles (containing two circles), form the steel wire trend and become 0 ° of angle with the center equatorial line of tread cap, form gauge of wire and elect 1.02 as, 1.2,1.5 or 1.80mm, the elongation at failure of forming steel wire is 4%, 5%, 6% or 8%, tensile strength at break is 800,1000,1200,1500,2000 or 2600N, the arrangement pitches that the composition steel wire forms between the bead coil increases from the inside to the outside successively, carries out the transition to 2.5mm gradually from 0.2mm from the inside to the outside such as the arrangement pitches between the bead coil; Composition steel wire among the second annular reinforcing bundle bar 4e is respectively along more than circumferential overlapping winding at least two circles, form the steel wire trend and become 0 ° of angle with the center equatorial line of tread cap, form gauge of wire and elect 1.02,1.2,1.5 or 1.80mm as, the elongation at failure of forming steel wire is 4%, 5%, 6% or 8%, tensile strength at break is 800,1000,1200,1500,2000 or 2600N, the arrangement pitches that the composition steel wire forms between the bead coil increases from the inside to the outside successively, carries out the transition to 2.5mm gradually from 0.2mm from the inside to the outside such as the arrangement pitches between the bead coil; The width of first, second annular reinforcing bundle bar be 20,30,35,40 or～50mm; The severing angle end to end of first, second annular reinforcing bundle bar is 30 °, 35 °, 40 ° or 45 °, and the lap of splice is 5,10,12 or 15mm.
Further specify as follows again with above-mentioned relevant technologies content:
In the aforesaid way, the casingply part is made of the wirecord fabric of rubberizing calendering, with respect to tire equator line (face) with 90 the degree through the angle radial arrangement, casingply is through belt layer part and sidewall part, between two bead part, extend, and walk around bead part and be folded to its outside from the inboard of tire, thereby form the base portion of a pair of anti-package partial sum between turnup divides.The radial height of anti-package part should be within zone of reasonableness, promptly between 10%～35% with the ratio of tire cross-section height.
In the aforesaid way, belt layer part is made up of two-layer above intersection mutually and the calendering wirecord fabric of tire equator wire clamp angle between 10～75 degree.
In the aforesaid way, forming the steel wire arranging density in first, second annular reinforcing bundle bar gradually changes on Width, to be suitable for the variation of tire suffered stress on the bracing ply Width, reduce the distortion of bracing ply limit portion, improve the tire shoulder rigidity of radial-ply tyre, reduce distortion and give birth to heat, guarantee when running at high speed, to have stable size, improve tyre surface stability, reduce irregular wear.Single composition steel wire diameter is at 1.02～1.80mm, and the too small disruption characteristic of diameter is less than normal, can not effectively reduce the distortion of tire shoulder position, easily makes the tire shoulder distortion give birth to cause thermal damage; Diameter is excessive, and steel wire rigidity is too big, and the tire shoulder rigidity is bigger than normal, and Yi Shengre takes on empty; Best 800～2600N/ the root of individual wire disruption characteristic, the fracture extensibility can guarantee operation technological requirement between 4%～8%, guarantee the product in-use performance again.Arrange size making extrusion eyelet strip and die panel according to forming steel wire (steel cord) in first, second annular reinforcing bundle bar, extrude.Then on the secondary machine of make-up machine with the attached subsides of parts such as bracing ply and tyre surface, building green tyre.
The contrast experiment
Comparative tire (prior art) model is 11.00R20-18PR, with experimental example tire of the present invention aspect first, second annular reinforcing bundle bar different outside, other structure is all identical, the experiment of being carried out is as follows:
1) operative weldability experiment
Under every forming operation technology does not become prerequisite, measure the secondary machine of moulding in moulding belt layer part, first and second annular reinforcing bundle bar and needed time of tyre surface composite members, the needed time of this composite members of moulding is represented with an index in table 1, the tire that this index is produced with prior art is an a reference value 100, this index is low more, and operative weldability is good more.
2) finished tire cross dimensions compatibility experiment
The experimental example tire is cut into circumferential section, and section part polished, measure each annular reinforcing bundle bar position each size of transversal surface of tire tire shoulder, compare with corresponding annular reinforcing bundle bar cross-sectional design size (index parameter) in the designing tyre scheme, compatibility is high more, and annular reinforcing bundle bar capability and performance is good more.
3) tire high speed test
Adopt a Tire testing drum, the experimental example tire is installed in one and is of a size of on 8.0 the standard rim, pressure inflatable with 930KPa, and the load of loading 35KN, under 38 ℃ ambient temperature, experimental drum starts to initial trial speed with interior with even acceleration at 10min, linear velocity with 60 kilometers/hour of rate of onset is rotated, with 2 hours be a speed cycle, carry out 70,80,90 then ... kilometer/hour test, up to the experimental example tire occur shoulder come to nothing damage till.Record tire total run time.In table 1, experimental result is a reference value 100 with an exponential representation, this index with the tire of prior art production, and this index is high more, and the tire high speed performance is good more.
4) tire cost
The tire cost is represented with an index, and the tire that this index is produced with prior art is an a reference value 100, and this index is low more, and the tire cost is low more.
Table 1
| Operative weldability | Tyre bead cross dimensions compatibility | The tire high speed | The tire cost | |
| Comparative tire | 100 | 100 | 100 | 100 |
| The experimental example tire | 100 | 100 | 125 | 100 |
Claims (5)
1. air-inflation tyre comprises:
One tread portion is made up of tread cap and tread base;
The pair of sidewall part;
Pad glue part comprises bracing ply pad glue and shoulder wedge;
Lining layer part comprises liner cambic horizon and air-retaining liner;
The casingply part, the casingply between two tyre beads is walked around the tyre bead anti-package laterally from the tire inboard, forms a pair of anti-package part of casingply and the base portion of the casingply between it;
Bead part comprises triangular rubber core, bead coil, bead coil encapsulate and chafer;
Belt layer part comprises band bundle cambic horizon and band bundle working lining;
It is characterized in that: the end at described band bundle working lining is provided with the first annular reinforcing bundle bar, and the other end is provided with the second annular reinforcing bundle bar; Composition steel wire in each annular reinforcing bundle bar is respectively along more than circumferential overlapping winding at least two circles, respectively forms steel wire in each annular reinforcing bundle bar and forms arrangement pitches increase successively from the inside to the outside between the bead coil; In described each annular reinforcing bundle bar, the arrangement pitches between the bead coil carries out the transition to 2.5mm gradually from 0.2mm from the inside to the outside; Described each annular reinforcing is intrafascicular, and the composition gauge of wire is 1.02～1.80mm, and the elongation at failure of forming steel wire is between 4%～8%, and tensile strength at break is 800～2600N.
2. air-inflation tyre according to claim 1, it is characterized in that: described belt layer part, comprise below metal-cord, process wire carcass plies and top metal-cord, wherein below metal-cord and process wire carcass plies are formed band bundle cambic horizon, and the top metal-cord is as band bundle working lining.
3. air-inflation tyre according to claim 2, it is characterized in that: in described below metal-cord, process wire carcass plies and the top metal-cord, each steel cord trend becomes 5～30 ° of angles with the center equatorial line of tread cap, and the trend of the steel cord in the adjacent wires carcass plies is opposite; Between described below metal-cord and the process wire carcass plies, between process wire carcass plies and the top metal-cord, and the width between below metal-cord and the top metal-cord possesses 5～20 millimeters difference level, and the width of below metal-cord is less than the width of process wire carcass plies, and the width of top metal-cord is less than the width of below metal-cord; The first annular reinforcing bundle bar is connected with the left side of top metal-cord, and the second annular reinforcing bundle bar is connected with the right side of top metal-cord, and each annular reinforcing bundle bar is wrapped on the corresponding avris of process wire carcass plies.
4. according to claim 1 or 3 described air-inflation tyres, it is characterized in that: the width of described each annular reinforcing bundle bar is 20～50mm.
5. according to claim 1 or 3 described air-inflation tyres, it is characterized in that: in described each annular reinforcing bundle bar, the trend of forming steel wire becomes 0 ° of angle with the center equatorial line of tread cap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100153896A CN101596841B (en) | 2009-06-04 | 2009-06-04 | Pneumatic tyre |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100153896A CN101596841B (en) | 2009-06-04 | 2009-06-04 | Pneumatic tyre |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101596841A CN101596841A (en) | 2009-12-09 |
| CN101596841B true CN101596841B (en) | 2010-12-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100153896A Active CN101596841B (en) | 2009-06-04 | 2009-06-04 | Pneumatic tyre |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102114756A (en) * | 2011-02-23 | 2011-07-06 | 杭州中策橡胶有限公司 | All-steel loading radial tire with zero-degree belted layer structure |
| CN103443706B (en) | 2011-05-18 | 2016-08-17 | 旭化成株式会社 | Pellicle, pellicle binding agent, the photomask of band pellicle and the manufacture method of semiconductor element |
| CN108357303B (en) * | 2018-04-04 | 2024-02-09 | 安徽佳通乘用子午线轮胎有限公司 | Pneumatic dumper truck radial tire with function of delaying damage of end part of belt layer |
| CN108725096A (en) * | 2018-08-08 | 2018-11-02 | 江苏通用科技股份有限公司 | Radial lightweight outer profile structure |
| CN109109574B (en) * | 2018-08-23 | 2024-08-09 | 中策橡胶集团股份有限公司 | Pneumatic radial tire for load |
| CN110281704B (en) * | 2019-06-26 | 2023-06-02 | 青岛双星轮胎工业有限公司 | Wire carcass ST tire and manufacturing process thereof |
| CN110667315A (en) * | 2019-10-10 | 2020-01-10 | 江苏通用科技股份有限公司 | Curve high-stretch belt ply structure |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101077685A (en) * | 2007-06-28 | 2007-11-28 | 双星集团有限责任公司 | Inflatable pneumatic tyre |
| CN101121368A (en) * | 2007-09-11 | 2008-02-13 | 青岛双星轮胎工业有限公司 | A pneumatic radial tire |
| CN201102447Y (en) * | 2007-11-23 | 2008-08-20 | 天津诺曼地橡胶有限公司 | Full-steel wire radial tyre |
-
2009
- 2009-06-04 CN CN2009100153896A patent/CN101596841B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101077685A (en) * | 2007-06-28 | 2007-11-28 | 双星集团有限责任公司 | Inflatable pneumatic tyre |
| CN101121368A (en) * | 2007-09-11 | 2008-02-13 | 青岛双星轮胎工业有限公司 | A pneumatic radial tire |
| CN201102447Y (en) * | 2007-11-23 | 2008-08-20 | 天津诺曼地橡胶有限公司 | Full-steel wire radial tyre |
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| CN101596841A (en) | 2009-12-09 |
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