CN202413296U - Loaded air-filled radial tire with segmental belted layer structure - Google Patents
Loaded air-filled radial tire with segmental belted layer structure Download PDFInfo
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- CN202413296U CN202413296U CN2012200203106U CN201220020310U CN202413296U CN 202413296 U CN202413296 U CN 202413296U CN 2012200203106 U CN2012200203106 U CN 2012200203106U CN 201220020310 U CN201220020310 U CN 201220020310U CN 202413296 U CN202413296 U CN 202413296U
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Abstract
The utility model relates to a loaded air-filled radial tire with a segmental belted layer structure, which is characterized in that multiple layers of steel cord belted layers are laid around outside of a tire body, wherein the multiple layers of steel core belted layers are arranged around the outer surface of the tire body and positioned under the tire surface along the circumference direction; and each steel core belted layer comprises a first 0-degree belted layer, a second 0-degree belted layer and a third 0-degree belted layer, wherein cord thread inclination directions of the adjacent belted layers are opposite, the central lines of the first, the second and the third belted layers around the circumference are all positioned on the equatorial plane of the tire, the first belted layer is laid at the upmost top of the tire body and divided into a left section and a right section, the second belted layer and the third belted layer are sequentially laid above the first belted layer, and two layers of 0-degree belted layers are respectively laid above the second belted layer and positioned at two ends of the third belted layer. The loaded air-filled radial tire disclosed by the utility model has the advantages that: the rigidity of the whole belted layer from the center of the tire surface to the edge of the belted layers is equalized, so that the tire cannot be locally expanded in the air inflation process, and local eccentric wear generated in the traveling process of the tire is improved.
Description
Technical field
The utility model relates to a kind of motor tire, particularly a kind of heavy duty pneumatic radial tire.
Background technology
In recent years, the flattening of heavy duty pneumatic radial tire constantly makes progress, and flat ratio constantly increases at the ultra flat wide base tire below 60%.The low present home market of flat wide base tire of heavy duty pneumatic radial tire substitutes twins with single tire and appears on the low chassis bus; It will be a kind of development tendency at home that single tire substitutes twins.Hang down the rideability of flat tire, depend primarily on the tyre surface and the ground-surface connected to chassis homogeneity of broad in the tire running process.If the ground connection of tire is inhomogeneous, then can play the deterioration effect to the anti-eccentric wear consumption of tire.
It is very big that the connected to chassis homogeneity of heavy duty pneumatic radial tire is influenced by the laying of the bracing ply at crown position in the tire construction.
General radial tire undertread cord angle is made as about 15～60 degree of relative tire Zhou Fangxiang; And the cord reversing sense is reported to the leadship after accomplishing a task at interlayer.But; Such tire belt structure directly applies to when hanging down flat radial-ply tyre; Because the wider width of bracing ply, the rigidity circumferential at the edge part of bracing ply descends, and the phenomenon of tire shoulder edge part extreme expansion can occur; Shown in ground connection shape (like Fig. 5) A, thus the eccentric wear of the tire that causes.
The tire that has 0 degree belt structure because 0 degree band circumferentially is laid on the tire shoulder, makes the rigidity of tire tire shoulder portion strengthen, and can fetter the expansion of shoulder effectively.But when 0 degree belt structure uses when hanging down flat band tire; Tire is under inflation situation; Expanding still appears in its shoulder; The anti-arc phenomenon of tyre surface camber line appears in the recessed phenomenon in tyre surface middle part, therefore merely uses 0 degree band structure in low flat tire, can not play the effect of improving the anti-eccentric wear of tire.
As the low uneven countermeasure of flat tire ground connection; In the belt cord that reversing sense is reported to the leadship after accomplishing a task, insert the bracing ply that is arranged in 0 degree with respect to tire Zhou Fangxiang often; Increase the rigidity of Zhou Fangxiang thus; Like No. the 98810625.6th, Chinese patent, such tire construction tool the improve durability of tire, the effect of anti-inclined to one side wearability.But the effect of the durability of resulting tire does not reach the level that satisfy.
Present utility model has separates belt structure inflation radial-ply tyre, and like No. the 6394160th, US Pat, wherein the cord of bracing ply is divided at least 3 parts.The reinforcement cord of each part on every layer of cord is all arranged with identical direction of tilt.Through keeping each part cord aligned identical direction, be divided into fraction to cord and make and produce hinge-point on the bracing ply cord, reduced and passed through the rigidity of tire line of centers to the cord transversely at two edges of tyre surface.The mild transition tool of such utility model through belt edges portion and the belt edges portion sizing material rigidity tyre last that improves.But if this utility model can cause the tire outside diameter differential expansion when being used in low flat band tire when inflation of tire, makes eccentric wear to occur in the tire running process.
The utility model content
The technical matters that the utility model will solve provides a kind of heavy duty pneumatic radial tire with sectional type belt structure, and the belt structure of sectional type can improve the anti-eccentric wear ability of tire effectively.
The utility model adopts following technical scheme to solve the problems of the technologies described above: a kind of heavy duty pneumatic radial tire with sectional type belt structure; Comprise the ground connection tyre surface, respectively at the tire shoulder of tyre surface both sides, along the tyre bead of the downward sidewall of tire shoulder, lower end, sidewall, comprise the carcass of at least one carcass plies, around the outside composite steel cord bracing ply of laying of carcass; Has bead core in the tyre bead; Composite steel cord bracing ply is along the circumferential direction placed around the outside face of carcass and is positioned under the tyre surface; Said steel cord bracing ply comprises first bracing ply, second bracing ply, the 3rd bracing ply; And 0 degree bracing ply, adjacent belt cord direction of tilt is opposite, said first bracing ply, second bracing ply, the 3rd bracing ply all be positioned at the equatorial plane of tire around the line of centers of circumference; First bracing ply is laid on the tight top of carcass; About being divided into two sections, second bracing ply and the 3rd bracing ply are laid on the top of first bracing ply successively, above second bracing ply at the 3rd bracing ply two ends, lay two-layer 0 degree bracing ply respectively.
This utility model can further be specially:
Said second bracing ply and the 3rd bracing ply are unsegmented inclination bracing ply.The angle of inclination of the whole layer cord in second bracing ply and the 3rd bracing ply is identical, and angle is made as 10～30 degree with respect to tire Zhou Fangxiang respectively.The width of second bracing ply is made as 75%～90% of overall tire width; The width of the 3rd bracing ply is made as 50%～60% of overall tire width.
As another scheme, said second bracing ply is segmented into the three sections bracing plys in left, center, right, and above the 3rd bracing ply, lays the protection bracing ply that one deck is made up of the steel cord, the protection bracing ply also be positioned at the equatorial plane of tire around the line of centers of circumference.
At this moment, the cord angle of inclination of the whole layer in the three sections bracing plys in the left, center, right of said second bracing ply is all identical, and angle is made as 10～30 degree with respect to tire Zhou Fangxiang.The stage casing width of said second bracing ply is made as 20%～35% of overall tire width, about two sections width identical, its width is made as 80%～130% of stage casing width.Steel cord in the protection bracing ply is 10～30 degree with respect to the angle of tire Zhou Fangxiang, and the width of protection bracing ply is made as 30%～50% of overall tire width.
In the such scheme, the fragment bit set of said first bracing ply in it on the line of centers of circumference.The angle of inclination of two sections whole layer cord is identical about said first bracing ply, is made as 15～40 degree with respect to tire Zhou Fangxiang angle of inclination, and the width of said first bracing ply is made as 70%～80% of overall tire width.
The advantage of the utility model is: the feasible whole bracing ply rigidity equalization from the tyre surface center to belt edges of sectional type bracing ply; Thereby make tire when inflation, can not cause the situation of differential expansion, can not produce ground pressure phenomenon pockety when making tire ground connection.The enforcement of sectional type bracing ply has improved the local eccentric wear that produces in the tire running process.
Description of drawings
Fig. 1 is the tire section figure of the utility model first embodiment.
Fig. 2 is from the local expansion drawing of the bracing ply of first embodiment of radial direction observation.
Fig. 3 be the utility model second embodiment tire section figure.
Fig. 4 is from the local expansion drawing of the bracing ply of second embodiment of radial direction observation.
Fig. 5 is that heavy duty is with flat tire ground connection shape birds-eye view.
Fig. 6 is an air-inflation tyre each point outside diameter measuring scheme drawing.
Fig. 7 A is an air-inflation tyre each point external diameter before and after the first embodiment segmentation bracing ply is implemented.
Fig. 7 B is an air-inflation tyre each point external diameter before and after the second embodiment segmentation bracing ply is implemented.
Fig. 8 is that the segmentation bracing ply is implemented front tyre ground connection footprint exemplary plot.
Fig. 9 is that the second embodiment segmentation bracing ply is implemented rear tyre ground connection footprint exemplary plot.
The specific embodiment
First embodiment
Like Fig. 1 and shown in Figure 2, the sectional type bracing ply structon radial tire 10 in the utility model comprise ground connection tyre surface 12, respectively at the tire shoulder 13 of tyre surface 12 both sides, along the tyre bead 16 of the downward sidewall 14 of tire shoulder 13,14 lower ends, sidewall, comprise the carcass 18 of at least one carcass plies 182, around the carcass 18 outside composite steel cord bracing plys of laying.Has bead core 162 in the tyre bead 16.Composite steel cord bracing ply is along the circumferential direction placed around the outside face of carcass 18 and is positioned under the tyre surface 12.
Carcass is often referred to by one or more layers carcass plies and tyre bead and forms the airtyred force structure of single-piece as the most important structure of tire.The effect of carcass is to make tire have full intensity, so that bear load and vibration, and makes tire keep certain physical dimension.Bracing ply is the tyre surface of radial-ply tyre or belted bias tire and a strengthening layer between the carcass, and its function is similar with cushion layer, through tightly wrapping up carcass, to increase the rigidity of tyre surface.The definition of steel cord is: form by two or two above steel wires, perhaps by thigh with strand combination or by the combination formed structure of thigh with silk.
Said steel cord bracing ply comprises first bracing ply 20, second bracing ply 30, the 3rd bracing ply 40, and 0 degree bracing ply 50.Adjacent belt cord direction of tilt is opposite.Said first bracing ply 20, second bracing ply 30, the 3rd bracing ply 40 all be positioned at the equatorial plane of tire around the line of centers of circumference.The equatorial plane is meant perpendicular to the rotation axis of tire and passes the plane at its tyre surface center.
The width W 2 of second bracing ply 30 is made as 75%～90% of overall tire width W; The width W 2 of the 3rd bracing ply 40 is made as 50%～60% of overall tire width W; Above second bracing ply 30 at the 3rd bracing ply 40 two ends, lay two-layer 0 degree bracing ply 50 respectively.
Second embodiment
Please with reference to Fig. 3 and shown in Figure 4, other structures and first embodiment are identical, keep on the basis of first bracing ply, 20 sectional types, and said second bracing ply 30 is segmented into the three sections bracing plys in left, center, right.The cord angle of inclination of the whole layer in the three sections bracing plys in said left, center, right is all identical; Angle is made as 10～30 degree with respect to tire Zhou Fangxiang; Sectional type bracing ply stage casing width is made as 20%～35% of overall tire width W; About two sections width identical, its width is made as 80%～130% of stage casing width.
And above the 3rd bracing ply 40, to lay one deck be the protection bracing ply 60 that 10～30 degree are made up of the steel cord with respect to the cord angle of tire Zhou Fangxiang, and the width of protection bracing ply 60 is made as 30%～50% of overall tire width W.Protection bracing ply 60 also be positioned at the equatorial plane of tire around the line of centers of circumference.
Among above-mentioned two embodiment; First bracing ply, 20 angles are set to 15 °～40 °; Because it is near the nearest one deck of casingply 182, belong to cambic horizon, this layer makes the body cord angle by radial array (90 °) carry out the transition to the low-angle bracing ply near circumferential array; Can reduce the shearing force of interlayer like this, avoid the delamination between bracing ply and the casingply 182.
Second and third bracing ply 30,40 angles are set to 10 °～30 °, and they are that the carcass plies that mainly meets with stresses in the belt structure is called working lining, and it plays the outside rigidity that expands and form bracing ply of carcass of constraint radial-ply tyre.This rigidity can directly influence the in-use performances such as resistance to abrasion, road-holding property and saving oil consumption of tire; The excessive effect that does not have the banding carcass of cord angle, too little like cord angle, not only make the technological operation such as severing and joint of bracing ply complicated, and also unfavorable to the in-use performance of tire, be easy to generate the danger of bracing ply delamination.
The 4th layer is protection bracing ply 60, and its angle and working lining are similar, and it plays a part the protection working lining, also plays simultaneously to prevent to produce intensity and raising tire service life and the refresh rate that tyre surface and bracing ply come to nothing phenomenon and improve tire.
Consider that second and third bracing ply 30,40 is working lining, must be little so this double-ply is stressed, generally be no more than 15% of this cord breaking tenacity.
Each layer angle Selection being done computer simulation analysis (FEA), through the different angle of each layer of sunykatuib analysis, drawing following these group data is optimization design scheme according to above Consideration.
The tire of the utility model constitutes bracing ply steel cord the bracing ply of above casingply, laying sectional type.The feasible whole bracing ply rigidity equalization of sectional type bracing ply from the tyre surface center to belt edges.Thereby make tire when inflation, can not cause the situation of differential expansion.Thereby can not produce ground pressure phenomenon pockety when making tire ground connection.
The air-inflation tyre external diameter expanded and sees shown in Fig. 7 A and Fig. 7 B before and after the segmentation bracing ply was implemented; Fig. 6 is that 5 measurement points are positioned at the tire location scheme drawing; Wherein measurement point 3 is positioned on the tire circumference line of centers; Measurement point 1,5 is positioned at the tire shoulder position, the middle part of measurement point 2,4 between tire shoulder and line of centers.Air-inflation tyre ground connection footprint exemplary plot was respectively like Fig. 8 and shown in Figure 9 before and after the segmentation bracing ply was implemented.Thereby can find out that the enforcement of sectional type bracing ply has improved the local eccentric wear that produces in the tire running process.
The applicant has also carried out the experiment of anti-eccentric wear property respectively to the tire of three kinds of different structures, process and result are following:
I: the tire of not implementing the segmentation bracing ply;
II: first bracing ply is implemented the tire of segmentation bracing ply;
III: the one or two bracing ply is implemented the segmentation bracing ply and is added the tire of matcoveredn.
To test tire and be installed on the actual car, go 20,000 kilometers moment, measure abrasion loss poor at tyre surface central portion and both ends.
Evaluation is carried out through the inverse of measured value, representes with index, and this index is 100 with the inverse of II; The big more meaning abrasion test of index is more excellent, and evaluation result is as shown in the table.
| ? | Ⅰ | Ⅱ | Ⅲ |
| Abrasion test (index) | 80 | 100 | 110 |
Claims (10)
1. heavy duty pneumatic radial tire with sectional type belt structure; Comprise the ground connection tyre surface, respectively at the tire shoulder of tyre surface both sides, along the tyre bead of the downward sidewall of tire shoulder, lower end, sidewall, comprise the carcass of at least one carcass plies, around the outside composite steel cord bracing ply of laying of carcass; Has bead core in the tyre bead; Composite steel cord bracing ply is along the circumferential direction placed around the outside face of carcass and is positioned under the tyre surface, it is characterized in that: said steel cord bracing ply comprises first bracing ply, second bracing ply, the 3rd bracing ply, and 0 degree bracing ply; Adjacent belt cord direction of tilt is opposite; Said first bracing ply, second bracing ply, the 3rd bracing ply all be positioned at the equatorial plane of tire around the line of centers of circumference, first bracing ply is laid on the tight top of carcass, about being divided into two sections; Second bracing ply and the 3rd bracing ply are laid on the top of first bracing ply successively, above second bracing ply at the 3rd bracing ply two ends, lay two-layer 0 degree bracing ply respectively.
2. the heavy duty pneumatic radial tire with sectional type belt structure according to claim 1 is characterized in that: said second bracing ply and the 3rd bracing ply are unsegmented inclination bracing ply.
3. the heavy duty pneumatic radial tire with sectional type belt structure according to claim 2; It is characterized in that: the angle of inclination of the whole layer cord in second bracing ply and the 3rd bracing ply is identical, and angle is made as 10～30 degree with respect to tire Zhou Fangxiang respectively.
4. the heavy duty pneumatic radial tire with sectional type belt structure according to claim 3 is characterized in that: the width of second bracing ply is made as 75%～90% of overall tire width; The width of the 3rd bracing ply is made as 50%～60% of overall tire width.
5. the heavy duty pneumatic radial tire with sectional type belt structure according to claim 1; It is characterized in that: said second bracing ply is segmented into the three sections bracing plys in left, center, right; And above the 3rd bracing ply, lay the protection bracing ply that one deck is made up of the steel cord, the protection bracing ply also be positioned at the equatorial plane of tire around the line of centers of circumference.
6. the heavy duty pneumatic radial tire with sectional type belt structure according to claim 5; It is characterized in that: the cord angle of inclination of the whole layer in the three sections bracing plys in the left, center, right of said second bracing ply is all identical, and angle is made as 10～30 degree with respect to tire Zhou Fangxiang.
7. the heavy duty pneumatic radial tire with sectional type belt structure according to claim 6; It is characterized in that: the stage casing width of said second bracing ply is made as 20%～35% of overall tire width; About two sections width identical, its width is made as 80%～130% of stage casing width.
8. the heavy duty pneumatic radial tire with sectional type belt structure according to claim 5; It is characterized in that: the steel cord in the protection bracing ply is 10～30 degree with respect to the angle of tire Zhou Fangxiang, and the width of protection bracing ply is made as 30%～50% of overall tire width.
9. according to each described heavy duty pneumatic radial tire of claim 1 to 8, it is characterized in that with sectional type belt structure: the fragment bit set of said first bracing ply in it on the line of centers of circumference.
10. according to each described heavy duty pneumatic radial tire of claim 1 to 8 with sectional type belt structure; It is characterized in that: the angle of inclination of two sections whole layer cord is identical about said first bracing ply; Be made as 15～40 degree with respect to tire Zhou Fangxiang angle of inclination, the width of said first bracing ply is made as 70%～80% of overall tire width.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200203106U CN202413296U (en) | 2012-01-17 | 2012-01-17 | Loaded air-filled radial tire with segmental belted layer structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200203106U CN202413296U (en) | 2012-01-17 | 2012-01-17 | Loaded air-filled radial tire with segmental belted layer structure |
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| Publication Number | Publication Date |
|---|---|
| CN202413296U true CN202413296U (en) | 2012-09-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200203106U Expired - Lifetime CN202413296U (en) | 2012-01-17 | 2012-01-17 | Loaded air-filled radial tire with segmental belted layer structure |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102582368A (en) * | 2012-01-17 | 2012-07-18 | 安徽佳通轮胎有限公司 | Inflatable Load radial tire with sectional type belted layer structure |
| CN104648047A (en) * | 2013-11-19 | 2015-05-27 | 山东玲珑轮胎股份有限公司 | Novel all-steel radial tire with belted layer structure |
| CN105015274A (en) * | 2015-08-05 | 2015-11-04 | 江苏通用科技股份有限公司 | Tire belted layer structure |
| CN112976946A (en) * | 2019-12-17 | 2021-06-18 | 固特异轮胎和橡胶公司 | Pneumatic tire |
-
2012
- 2012-01-17 CN CN2012200203106U patent/CN202413296U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102582368A (en) * | 2012-01-17 | 2012-07-18 | 安徽佳通轮胎有限公司 | Inflatable Load radial tire with sectional type belted layer structure |
| CN102582368B (en) * | 2012-01-17 | 2014-08-27 | 安徽佳通轮胎有限公司 | Inflatable Load radial tire with sectional type belted layer structure |
| CN104648047A (en) * | 2013-11-19 | 2015-05-27 | 山东玲珑轮胎股份有限公司 | Novel all-steel radial tire with belted layer structure |
| CN105015274A (en) * | 2015-08-05 | 2015-11-04 | 江苏通用科技股份有限公司 | Tire belted layer structure |
| CN112976946A (en) * | 2019-12-17 | 2021-06-18 | 固特异轮胎和橡胶公司 | Pneumatic tire |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210304 Address after: 230601 Anhui city in Hefei Province, the economic and Technological Development Zone, Road No. 18 Patentee after: ANHUI GITI RADIAL TIRE Co.,Ltd. Address before: 230000 No.8, Shixin Road, Hefei Economic Development Zone, Anhui Province Patentee before: Anhui Giti Tire Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120905 |