CN103660798A - All-steel radial tire provided with tire body reinforcing layer - Google Patents
All-steel radial tire provided with tire body reinforcing layer Download PDFInfo
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- CN103660798A CN103660798A CN201310696990.2A CN201310696990A CN103660798A CN 103660798 A CN103660798 A CN 103660798A CN 201310696990 A CN201310696990 A CN 201310696990A CN 103660798 A CN103660798 A CN 103660798A
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Abstract
The invention provides an all-steel radial tire provided with a tire body reinforcing layer. The all-steel radial tire comprises a tire body, wherein the tire body is divided into a crown area, a tire shoulder area, a side wall area and a tire bead area sequentially from top to bottom; a tire body wire cord fabric is arranged in the tire body; the tire body wire cord fabric is provided with a first turn-up end; the tire body reinforcing layer is radially attached to the outside of the tire body wire cord fabric and provided with a second turn-up end; and a radial height difference exists between the second turn-up end and the first turn-up end. According to the all-steel radial tire provided with the tire body reinforcing layer, the stress born by a tire body cord thread can be reduced, the stress concentration region of the turn-up end of the tire body wire cord fabric is dispersed, and the shear strain peak value of the turn-up end of the tire body wire cord fabric is reduced, so that the bearing capacity and the durability of the tire can be improved, and greater economic and social benefits are obtained.
Description
Technical field
The present invention relates to whole steel wire radial tyre technical field, specifically a kind of whole steel wire radial tyre with carcass enhancement Layer.
Background technology
Growing along with national economy, vehicle condition constantly improves, and the load carrying ability of autotruck also constantly rises, and tire is as the main load-supporting part of automobile, and its effect is more and more important.Yet in real life, the tire fault of the autotruck fault that especially carcass destroys and bead ftractures happens occasionally, and also affects people's the security of the lives and property in the time of restriction economic development.
At present, existing whole steel wire radial tyre on market, its structure is only has one deck carcass metal-cord, and what use is more common steel cord, when air pressure is larger, the suffered tension force of steel cord increases, and easily causes the fault rupture of carcass wirecord fabric; And, at carcass metal-cord turnup, the carcass metal-cord of carcass metal-cord anti-package end and its inner side exists the relative displacement of opposite direction, because steel bead wire after inflation exists " rotation ", carcass metal-cord anti-package end has the trend of " extraction ", cause this position to exist serious shear deformation, easily cause carcass metal-cord anti-package end to tear.Position, sidewall is subject to the variation of subduing of one-period in the process of tire rolling, and the strength at repeated alternation of carcass steel cord directly affects the service life of tire.
If use thicker steel cord, increase due to steel cord sectional area, although can reduce the stress of steel cord, but can not effectively reduce the shear deformation of carcass metal-cord turnup, and may have following several unfavorable situation occurs: the one, and thicker steel cord can make the decrease of fatigue strength of carcass, thereby reduces the service life of tire; The 2nd, thicker steel cord means in steel cord severing place larger section, because section part does not have copper facing, so larger section just has larger defect; The 3rd, even steel cord density is increased to the maxim that current technology can reach, may still there is no abundant margin of strength.
Summary of the invention
The object of the present invention is to provide a kind of whole steel wire radial tyre with carcass enhancement Layer that can effectively reduce the shear deformation of the suffered tension force of carcass steel cord and carcass metal-cord anti-package end.
Technical scheme of the present invention is:
A kind of whole steel wire radial tyre with carcass enhancement Layer, comprise carcass, carcass is divided into crown zone from top to bottom successively, shoulder area, sidewall district and bead region, in carcass, be provided with carcass metal-cord, bead region has the steel bead wire of burying underground wherein, carcass metal-cord is outwards walked around the upwards upset again of steel bead wire bottom from steel bead wire radially inner side, form carcass metal-cord turnup and there is the first anti-package end, the radial outside of described carcass metal-cord is pasted with carcass enhancement Layer, described carcass enhancement Layer is outwards walked around the upwards upset again of steel bead wire bottom from steel bead wire radially inner side, form carcass enhancement Layer turnup and there is the second anti-package end, between described the second anti-package end and the first anti-package end, exist radial height poor.
The described whole steel wire radial tyre with carcass enhancement Layer, described radial height is poor between 5 millimeters～50 millimeters.
The described whole steel wire radial tyre with carcass enhancement Layer, described carcass enhancement Layer is the painting plastic structure with steel cord.
The described whole steel wire radial tyre with carcass enhancement Layer, described carcass enhancement Layer has a part at least in crown zone be discontinuous, described discontinuous part connects by film.
The described whole steel wire radial tyre with carcass enhancement Layer, described carcass enhancement Layer is discontinuous in 0～100 millimeter, the center shaft both sides of crown zone distance center axle.
The present invention adopts carcass enhancement Layer structure on the basis that keeps whole steel wire radial tyre basic structural feature, carcass metal-cord and carcass enhancement Layer can be used thinner steel cord, there is a diff-H in the turn up height of carcass metal-cord and carcass enhancement Layer, strength at repeated alternation can not sacrificed, do not amplify severing cross section defect, do not reduce to increase under the prerequisite of margin of strength the inflation pressure of whole tire, the areal of stress concentration that disperses carcass metal-cord anti-package end, the shear strain peak value of carcass metal-cord anti-package end is declined, thereby can improve load-carrying capacity and the endurance of tire, obtain larger economic benefit and social benefit.
Preferably, carcass enhancement Layer has a part at least in crown zone be discontinuous, and discontinuous part connects by film, thereby can utilize the thickness of film to control the carcass profile of crown zone, to meet the optimum design of balance profile.
Accompanying drawing explanation
Fig. 1 is the radially section structure schematic diagram of the specific embodiment of the invention;
Fig. 2 is the A portion enlarged drawing of Fig. 1;
Fig. 3 is the stress curve figure of existing certain specification whole steel wire radial tyre carcass steel cord under inflation and loading condition.
The specific embodiment
As shown in Figure 1 and Figure 2, a kind of whole steel wire radial tyre with carcass enhancement Layer, comprise carcass 1, according to tire section structure radially, carcass 1 is divided into crown zone 2, shoulder area 3, sidewall district 4 and bead region 5 from top to bottom successively, wherein, shoulder area 3, sidewall district 4 and bead region 5 respectively have a pair of, are symmetrically distributed in section axis of symmetry (section axis of symmetry is also the center shaft of crown zone) both sides.In carcass 1, be provided with carcass metal-cord 6, carcass metal-cord 6 strides across along the bead region 5 of carcass 1 one sides the bead region 5 that sidewall district 4, shoulder area 3 and crown zone 2 extend to opposite side annularly.Bead region 5 has the steel bead wire 7 of burying underground wherein, and carcass metal-cord 6 is outwards walked around the upwards upset again of steel bead wire 7 bottoms from steel bead wire 7 radially inner sides, forms carcass metal-cord turnup and has the first anti-package end 61.
The radial outside of carcass metal-cord 6 is pasted with carcass enhancement Layer 8, and carcass enhancement Layer 8 is outwards walked around the upwards upset again of steel bead wire 7 bottoms from steel bead wire 7 radially inner sides, forms carcass enhancement Layer turnup and has the second anti-package end 81.Between the radial height of the radial height of the second anti-package end 81 and the first anti-package end 61, there is the diff-H of 5 millimeters～50 millimeters, Figure 1 shows that the turn up height of carcass enhancement Layer 8 is higher than the turn up height of carcass metal-cord 6, also can make the turn up height of carcass metal-cord 6 higher than the turn up height of carcass enhancement Layer 8.Carcass enhancement Layer 8 adopts the painting plastic structure with steel cord, and the steel cord of the steel cord of carcass enhancement Layer 8 and carcass metal-cord 6 has same or similar tensile mechanical properties.Subsides add after carcass enhancement Layer 8, and carcass metal-cord 6 and carcass enhancement Layer 8 bear the inflation pressure of tire jointly, so can use thinner steel cord.
Adopt said structure, have the following advantages:
One, because carcass metal-cord 6 and carcass enhancement Layer 8 bear inflation pressure jointly, make tire have enough large margin of strength, and carcass metal-cord 6 tension force suffered with carcass enhancement Layer 8 tension force suffered with not pasting carcass metal-cord 6 while adding carcass enhancement Layer 8 is compared greatly and is reduced, now, the in the situation that on unit width carcass metal-cord 6, steel cord quantity being constant, can use thinner steel cord, such as filament diameter below 0.22 millimeter or thinner steel cord replace original steel cord.Like this, the cost of steel cord part can significantly not rise, and the strength at repeated alternation of carcass can increase, and uses thinner steel cord to mean that the density of steel cord can be more sparse, thereby can reduce the difficulty in production technology.And thinner steel cord has less severing cross section, and defect is less.
They are two years old, owing to having between the radial height of anti-package end of carcass enhancement Layer 8 and carcass enhancement Layer 8 and carcass metal-cord 6, there is a diff-H, carcass metal-cord anti-package end is that the relative displacement of opposite direction between the first anti-package end 61 and carcass enhancement Layer 8 can reduce, " extraction " trend of carcass metal-cord anti-package end also can reduce, the stress central tendency of having disperseed carcass metal-cord turnup, make the shear deformation of original carcass metal-cord anti-package end be distributed in carcass metal-cord anti-package end (i.e. the first anti-package end 61) and the carcass enhancement Layer anti-package end (i.e. the second anti-package end 81) of new construction, thereby can significantly reduce the peak value of the shear strain in this region, the endurance quality at tyre rim position is improved.
From the above, keeping whole steel wire radial tyre basic structural feature, (radial-ply tyre basic structural feature is that steel cord is laid along meridian direction in the present invention, can not have and intersect with meridian direction, this principle is followed in the laying of the steel cord of carcass enhancement Layer of the present invention) basis on adopt carcass enhancement Layer structure, carcass metal-cord and carcass enhancement Layer can be used thinner steel cord, there is a diff-H in the turn up height of carcass metal-cord and carcass enhancement Layer, strength at repeated alternation can not sacrificed, do not amplify severing cross section defect, do not reduce to increase under the prerequisite of margin of strength the inflation pressure of whole tire, the areal of stress concentration that disperses carcass metal-cord anti-package end, the shear strain peak stress of carcass metal-cord anti-package end is declined, thereby can improve load-carrying capacity and the endurance of tire, obtain larger economic benefit and social benefit.
In addition, as shown in Figure 3, for utilizing the stress curve figure of certain specification whole steel wire radial tyre steel cord (hereinafter to be referred as steel cord) of carcass metal-cord 6 under inflation and loading condition that finite element analysis obtains.Abscissa represents that ordinate represents the suffered tension force of steel cord along steel cord path to the distance of section axis of symmetry.Can see, be also crown zone 2 in the scope of 0～100 millimeter, and steel cord is stressed less, be about peaked half, illustrate that the margin of strength of this position carcass metal-cord 6 is abundant, do not need to paste again and add carcass enhancement Layer 8.Er sidewall district 4 is bead region 5 especially, and steel cord is stressed larger, pastes and adds the load-carrying capacity that carcass enhancement Layer 8 can significantly improve this position, thereby improve the load-carrying capacity of whole tire.Therefore, on the basis of original carcass structure, can on the carcass metal-cord 6 of bead region 5, sidewall district 4, shoulder area 3 and part crown zone 2, paste and add carcass enhancement Layer 8, and near 2 centers, crown zone, at the discontinuous position of carcass enhancement Layer 8, subsides add one deck film 9, thereby can utilize the thickness of film 9 to control the carcass profile of crown zone 2, to meet the optimum design of balance profile.
The above embodiment is only that the preferred embodiment of the present invention is described; not scope of the present invention is limited; design under the prerequisite of spirit not departing from the present invention; various distortion and improvement that those of ordinary skills make technical scheme of the present invention, all should fall in the definite protection domain of claims of the present invention.
Claims (5)
1. a whole steel wire radial tyre with carcass enhancement Layer, comprise carcass, carcass is divided into crown zone, shoulder area, sidewall district and bead region from top to bottom successively, in carcass, be provided with carcass metal-cord, bead region has the steel bead wire of burying underground wherein, carcass metal-cord is outwards walked around the upwards upset again of steel bead wire bottom from steel bead wire radially inner side, forms carcass metal-cord turnup and has the first anti-package end
It is characterized in that: the radial outside of described carcass metal-cord is pasted with carcass enhancement Layer, described carcass enhancement Layer is outwards walked around the upwards upset again of steel bead wire bottom from steel bead wire radially inner side, form carcass enhancement Layer turnup and there is the second anti-package end, between described the second anti-package end and the first anti-package end, existing radial height poor.
2. the whole steel wire radial tyre with carcass enhancement Layer according to claim 1, is characterized in that: described radial height is poor between 5 millimeters～50 millimeters.
3. the whole steel wire radial tyre with carcass enhancement Layer according to claim 1, is characterized in that: described carcass enhancement Layer is the painting plastic structure with steel cord.
4. the whole steel wire radial tyre with carcass enhancement Layer according to claim 1, is characterized in that: described carcass enhancement Layer has a part at least in crown zone be discontinuous, and described discontinuous part connects by film.
5. the whole steel wire radial tyre with carcass enhancement Layer according to claim 4, is characterized in that: described carcass enhancement Layer is discontinuous in 0～100 millimeter, the center shaft both sides of crown zone distance center axle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310696990.2A CN103660798B (en) | 2013-12-18 | 2013-12-18 | A kind of whole steel wire radial tyre with carcass enhancement Layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310696990.2A CN103660798B (en) | 2013-12-18 | 2013-12-18 | A kind of whole steel wire radial tyre with carcass enhancement Layer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103660798A true CN103660798A (en) | 2014-03-26 |
| CN103660798B CN103660798B (en) | 2016-09-21 |
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| CN201310696990.2A Expired - Fee Related CN103660798B (en) | 2013-12-18 | 2013-12-18 | A kind of whole steel wire radial tyre with carcass enhancement Layer |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2649369Y (en) * | 2003-10-22 | 2004-10-20 | 天津诺曼地橡胶有限公司 | Full steel wire radial tyre |
| CN201009677Y (en) * | 2007-01-09 | 2008-01-23 | 昊华南方(桂林)橡胶有限责任公司 | All-steel radial project tire with transition reinforced layer |
| CN101253060A (en) * | 2005-09-01 | 2008-08-27 | 普利斯通及风驰通北美轮胎有限责任公司 | Tire having a sidewall reinforcement |
| EP2156966A1 (en) * | 2008-08-19 | 2010-02-24 | The Goodyear Tire & Rubber Company | Pneumatic tire with single non-continuous carcass ply |
| CN203438781U (en) * | 2013-08-15 | 2014-02-19 | 山西德生轮胎股份有限公司 | Novel all steel radical truck tire for mine |
| CN203611657U (en) * | 2013-12-18 | 2014-05-28 | 李双龙 | Whole-steel-wire radial ply tire with carcass reinforcing layer |
-
2013
- 2013-12-18 CN CN201310696990.2A patent/CN103660798B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2649369Y (en) * | 2003-10-22 | 2004-10-20 | 天津诺曼地橡胶有限公司 | Full steel wire radial tyre |
| CN101253060A (en) * | 2005-09-01 | 2008-08-27 | 普利斯通及风驰通北美轮胎有限责任公司 | Tire having a sidewall reinforcement |
| CN201009677Y (en) * | 2007-01-09 | 2008-01-23 | 昊华南方(桂林)橡胶有限责任公司 | All-steel radial project tire with transition reinforced layer |
| EP2156966A1 (en) * | 2008-08-19 | 2010-02-24 | The Goodyear Tire & Rubber Company | Pneumatic tire with single non-continuous carcass ply |
| CN203438781U (en) * | 2013-08-15 | 2014-02-19 | 山西德生轮胎股份有限公司 | Novel all steel radical truck tire for mine |
| CN203611657U (en) * | 2013-12-18 | 2014-05-28 | 李双龙 | Whole-steel-wire radial ply tire with carcass reinforcing layer |
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| Publication number | Publication date |
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| CN103660798B (en) | 2016-09-21 |
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