CN210733721U - Tire bead structure of reinforced all-steel radial tire - Google Patents
Tire bead structure of reinforced all-steel radial tire Download PDFInfo
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- CN210733721U CN210733721U CN201921379912.9U CN201921379912U CN210733721U CN 210733721 U CN210733721 U CN 210733721U CN 201921379912 U CN201921379912 U CN 201921379912U CN 210733721 U CN210733721 U CN 210733721U
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Abstract
The utility model provides a strenghthened type all steel wire radial tire's tire bead structure, including apex, steel wire winding, rim infantees and matrix fabric layer, matrix fabric layer upwards extends from the steel wire winding inboard along the steel wire winding bottom and forms the turn-up, the rim infantees are arranged in between apex and the matrix fabric layer, and extend and turn-up the steel wire winding from the steel wire winding inboard side direction steel wire winding bottom, the interior extreme point of rim infantees extremely the high H of steel wire winding lower surface water flat line1The height H from the outer end point of the bead wrapping cloth to the horizontal line of the lower surface of the bead ring2And the height H from the turn-up end point of the carcass ply to the horizontal line of the lower surface of the bead ring3Implement for securing purposeThe following relationships exist: h1>H2And H1>H3. The utility model discloses with bead infantees parcel steel wire winding and with the inner endpoint setting of bead infantees be higher than the outer endpoint and be higher than the anti-package endpoint of matrix fabric to this pressure of sharing under the different operating modes, the protection belongs to the bead infantees outer endpoint of the weak position of tire bead and the anti-package endpoint of matrix fabric.
Description
Technical Field
The utility model belongs to the technical field of the tire, concretely relates to all steel silk radial tire's of strenghthened type tire bead structure.
Background
With the rapid development of the automobile industry and the transportation industry, the all-steel-wire truck radial tire is more and more widely applied, the requirement of users on the load capacity is higher and higher, the requirement is particularly obvious in the short-distance truck market, and the tire has a plurality of failure problems in the use process along with the increase of the load capacity, wherein the tire bead failure becomes the main failure problem of the all-steel-wire truck radial tire.
The main causes of bead failure problems are: the rubber and cord thread materials at the tire bead part are complex, the physical properties of materials near the end point of the reverse wrapping of the tire body and the end point of the wrapping cloth of the steel wire seam are greatly different and are anisotropic, the stress concentration of the area near the end part of the cord fabric is obvious, the stress strain value is high, and the heat generation is large, so that the steel wire is separated from the rubber, and the fault is caused. The bead structure of the prior all-steel-wire load-carrying radial tire mainly comprises a steel wire ring, a tire body wrapped by the steel wire ring, steel wire bead wrapping cloth attached to the outer side of the tire body, a plurality of fiber layers and the like, and although the prior tire bead structure can ensure certain load performance and durability, the problem of tire bead failure is not solved well.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned shortcomings of the prior art, the present invention is directed to a bead structure of a reinforced all-steel radial tire.
In order to achieve the above objects or other objects, the present invention provides a method for manufacturing a semiconductor device, comprising:
a tire bead structure of a reinforced all-steel radial tire comprises a bead filler, a bead ring, a bead filler and a tire body cord fabric layerThe bead opening wrapping cloth is arranged between the bead filler and the carcass ply, extends from the inner side of the bead ring to the bottom of the bead ring and wraps the bead ring reversely, and the height H from the inner end point of the bead opening wrapping cloth to the horizontal line of the lower surface of the bead ring1The height H from the outer end point of the bead wrapping cloth to the horizontal line of the lower surface of the bead ring2And the height H from the turn-up end point of the carcass ply to the horizontal line of the lower surface of the bead ring3Have the following relationship between: h1>H2And H1>H3。
The further technical proposal of the utility model is that the height H1And said height H2The difference range of (A) is 10-50 mm, and the height H1And said height H3The difference range of (A) is 10-50 mm, and the height H2And said height H3The difference range of (A) is 5-25 mm.
The further technical proposal of the utility model is that when H is used3>H2When the ratio is more than or equal to 2 (H)1-H2)/(H3-H2) Less than or equal to 5.6; when H is present2>H3When the ratio is more than or equal to 3.2 (H)1-H3)/(H2-H3)≤5。
The utility model discloses a further technical scheme does, the inner endpoint of rim infantees with be equipped with the protection film between the matrix ply, the upper end of protection film is located the apex with between the matrix ply, and downwardly extending extremely the rim infantees with between the matrix ply.
The utility model discloses a further technical scheme does, the up end of protection film with the perpendicular distance h of the interior extreme point of bead infantees is 10~30 mm.
The utility model discloses a further technical scheme does, the up end of protection film with the linear distance L of the lower extreme point of protection film is 30~50 mm.
The utility model discloses a further technical scheme does, the thickness of protection film is 1~2.5 mm.
The utility model discloses a further technical scheme does, the outside of apex is equipped with and extends, just inserts along tire bead position in bead position of tire bead the bead infantees outer endpoint with the anti-frictioning between the anti-packet end point of carcass ply.
Has the advantages that:
1. the utility model wraps the bead filler cloth on the steel wire ring and sets the inner end point of the bead filler cloth higher than the outer end point and the carcass ply turn-up end point, thereby sharing the pressure under different working conditions and protecting the bead filler outer end point and the carcass ply turn-up end point which belong to the weak position of the bead; meanwhile, the difference between the inner end point and the outer end point of the bead filler cloth and the reverse wrapping end point of the cord fabric layer of the tire body is optimized, the shearing strain of the reverse wrapping end point of the cord fabric layer of the tire body and the reverse wrapping end point of the cord filler cloth is reduced, the stress concentration of the end points is relieved, and the durability of the tire bead is improved; on the other hand, the corner points of the carcass ply and the steel wire ring are separated by the bead wrapping cloth, so that the problems of bead spinning, explosion and the like are prevented;
2. the utility model arranges the protective film between the inner end point of the bead opening wrapping cloth and the carcass ply, thereby reducing the shearing strain of the inner end point of the steel wire bead opening wrapping cloth, relieving the stress concentration of the end part, avoiding the inner end point from becoming a vulnerable part, and preventing the inner crack of the bead opening wrapping cloth and other problems;
3. the utility model limits the difference between the inner end point and the outer end point of the bead wrapping cloth and the reverse wrapping end point of the carcass ply, and controls the cost and the weight of the tire to be in a proper range on the premise of ensuring the durability of the tire;
4. the angle between the bead filler cloth and the tire circumferential direction is controlled within the range of 20-60 degrees, the angle between the steel wire bead filler cloth and the tire circumferential direction is too small, the rigidity of a tire bead cannot be effectively enhanced, the stress concentration of the end part is obvious, and the durability of the tire bead is not facilitated; the excessive angle between the steel wire edge wrapping cloth and the circumferential direction of the tire can cause the increase of the weight and the cost of the tire, but the durability is not obviously improved.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic diagram of the proportional relationship of various parameters of the present invention;
in the figure: 1. triangular glue; 2. a bead ring; 3. wrapping the cloth at the bead opening; 4. a carcass ply; 5. protecting the film; 6. rubbing resistance is achieved; 7. an inner liner.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.
As shown in fig. 1, the tire bead structure of the reinforced all-steel radial tire of the present invention comprises an apex, a bead ring, a bead filler, a carcass ply, a protective film and an anti-friction adhesive, wherein the outer side of the carcass ply is an inner liner, a double-layer nylon wrapping cloth is arranged between the inner liner and the carcass ply, the double-layer nylon wrapping cloth is an outer nylon wrapping cloth and an inner nylon wrapping cloth, and the outer end point height of the outer nylon wrapping cloth is lower than that of the inner nylon wrapping cloth; the bead filler comprises a lower bead filler and an upper bead filler, the carcass ply extends upwards from the inner side of the bead ring along the bottom of the bead ring to form a turn-up, the bead filler is arranged between the bead filler and the carcass ply, extends from the inner side of the bead ring to the bottom of the bead ring and turns up the bead ring, and the bead filler and the circumferential direction of the tire form an angle of 20-60 degrees; the protective rubber sheet is arranged between the inner end point of the bead filler cloth and the carcass ply, wherein the upper end of the protective rubber sheet is positioned between the apex and the carcass ply and extends downwards to a position between the bead filler cloth and the carcass ply; the anti-friction rubber is arranged on the outer side of the upper triangular rubber and extends to the tire bead part along the tire bead part, and the anti-friction rubber is inserted between the outer end point of the bead filler cloth and the reverse wrapping end point of the carcass ply.
As shown in fig. 2, the height H from the inner end point of the bead filler cloth to the horizontal line of the lower surface of the bead ring1The height H from the outer end point of the bead wrapping cloth to the horizontal line of the lower surface of the bead ring2And the height H from the turn-up end point of the carcass ply to the horizontal line of the lower surface of the bead ring3Have the following relationship between: h1>H2And H1>H3Wherein the height H1And said height H2Preferably, the difference range of (A) is 10-50 mm, and the height H1And said height H3Preferably, the difference range of (A) is 10-50 mm, and the height H2And said height H3The difference range of (A) is preferably 5-25 mm.
FIG. 2 shows a height H3>Height H2The optimal proposal of the method is that in order to reduce the maximum shear strain index and the strain energy density index of the ply turn-up end point, the maximum shear strain index of the outer end point of the bead wrapping cloth and the strain energy density index of the inner end point of the bead wrapping cloth to meet the requirement, the height H is reduced at the moment1Height H2And a height H3It is preferable that 2. ltoreq. H is satisfied in the case where a preferable difference range is defined1-H2)/(H3-H2) The proportion relation is less than or equal to 6.
Further, the height H2 can be selected to be greater than the height H3, and the maximum shear strain index and the strain energy density index of the ply turnup end point and the maximum shear strain index of the outer end point of the cloth of the seam allowance and the strain energy density index of the inner end point of the cloth of the seam allowance can be reduced to meet the requirement when the height H2 is greater than the height H31Height H2And a height H3It is preferable that the composition satisfies 3.2. ltoreq. H in the case where a preferable difference range is defined1-H3)/(H2-H3)≤5。
As shown in fig. 2, in order to make the protective film achieve its function well, the position and thickness of the protective film need to be selected, and preferably, the vertical distance between the upper end point of the protective film and the inner end point of the cuff cloth is 10-30 mm; the linear distance between the upper end point of the protection film and the lower end point of the protection film is 30-50 mm; the thickness of the protective film is 1-2.5 mm.
The structure of the present invention is illustrated below by way of example, where the maximum shear strain index and the strain energy density index are used to characterize the bead durability, the lower the index, the better the representative durability, table 1 is the parameter table of the example, and table 2 is the data of the maximum shear strain index and the strain energy density index of the corresponding example.
TABLE 1
TABLE 2
As can be seen from tables 1 and 2:
1) the durability of the tire bead structure of the utility model is obviously better than that of a comparative example, and the common fault problems of tire body turn-up end cracking or bead opening wrapping cloth turn-up end cracking and the like can be effectively reduced;
2) in the embodiment, the height relation between the tire body and the bead wrapping cloth is in a reasonable difference and proportion range, and the cost and the weight of the tire are controlled to be in a proper range on the premise of ensuring the durability of the tire.
The foregoing is merely a preferred embodiment of the present invention, and is not intended to limit the present invention in any way and in any way, and it should be understood that modifications and additions may be made by those skilled in the art without departing from the method of the present invention, and such modifications and additions are also considered to be within the scope of the present invention. Those skilled in the art can make various changes, modifications and evolutions equivalent to those made by the above-disclosed technical content without departing from the spirit and scope of the present invention, and all such changes, modifications and evolutions are equivalent embodiments of the present invention; meanwhile, any changes, modifications and evolutions of equivalent changes to the above embodiments according to the actual technology of the present invention are also within the scope of the technical solution of the present invention.
Claims (8)
1. The tire bead structure of the reinforced all-steel radial tire comprises a bead filler (1), a bead ring (2), a bead filler (3) and a tire body cord fabric (4), and is characterized in that the tire body cord fabric extends upwards from the inner side of the bead ring along the bottom of the bead ring to form a turn-up, the bead filler is arranged between the bead filler and the tire body cord fabric and extends from the inner side of the bead ring to the bottom of the bead ring to turn up the bead ring, and the height H from the inner end point of the bead filler to the horizontal line on the lower surface of the bead ring is the height H of the horizontal line1The height H from the outer end point of the bead wrapping cloth to the horizontal line of the lower surface of the bead ring2And the height H from the turn-up end point of the carcass ply to the horizontal line of the lower surface of the bead ring3Have the following relationship between: h1>H2And H1>H3。
2. The bead structure of a reinforced all-steel radial tire according to claim 1, wherein said height H1And said height H2The difference range of (A) is 10-50 mm, and the height H1And said height H3The difference range of (A) is 10-50 mm, and the height H2And said height H3The difference range of (A) is 5-25 mm.
3. The bead structure of a reinforced all-steel radial tire according to claim 1 or 2, wherein when H is greater than H, the bead structure is characterized in that3>H2When the ratio is more than or equal to 2 (H)1-H2）/（H3-H2) Less than or equal to 5.6; when H is present2>H3When the ratio is more than or equal to 3.2 (H)1-H3）/（H2-H3）≤5。
4. A bead structure of a reinforced all-steel radial tire according to claim 1, wherein a protective rubber sheet (5) is provided between the inner end of the cuff cloth and the carcass ply, and the upper end of the protective rubber sheet is located between the apex and the carcass ply and extends downward between the cuff cloth and the carcass ply.
5. The bead structure of the reinforced all-steel radial tire according to claim 4, wherein a vertical distance h between an upper end point of the protective rubber sheet and an inner end point of the bead filler is 10-30 mm.
6. The bead structure of a reinforced all-steel radial tire according to claim 5, wherein a linear distance L between an upper end point of the protective film and a lower end point of the protective film is 30 to 50 mm.
7. The bead structure of a reinforced all-steel radial tire according to any one of claims 4 to 6, wherein the thickness of the protective film is 1 to 2.5 mm.
8. The bead structure of a reinforced all-steel radial tire according to claim 1, wherein the outer side of the apex is provided with an anti-friction rubber (6) extending in the tire bead direction along the tire bead opening direction and inserted between the outer end point of the bead filler and the turn-up end point of the carcass ply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921379912.9U CN210733721U (en) | 2019-08-23 | 2019-08-23 | Tire bead structure of reinforced all-steel radial tire |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921379912.9U CN210733721U (en) | 2019-08-23 | 2019-08-23 | Tire bead structure of reinforced all-steel radial tire |
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| CN210733721U true CN210733721U (en) | 2020-06-12 |
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| CN201921379912.9U Active CN210733721U (en) | 2019-08-23 | 2019-08-23 | Tire bead structure of reinforced all-steel radial tire |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111775637A (en) * | 2020-07-14 | 2020-10-16 | 江苏通用科技股份有限公司 | All-steel load-bearing radial tire bead structure |
| CN111775636A (en) * | 2020-07-14 | 2020-10-16 | 江苏通用科技股份有限公司 | Bearing type all-steel radial tire bead structure |
-
2019
- 2019-08-23 CN CN201921379912.9U patent/CN210733721U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111775637A (en) * | 2020-07-14 | 2020-10-16 | 江苏通用科技股份有限公司 | All-steel load-bearing radial tire bead structure |
| CN111775636A (en) * | 2020-07-14 | 2020-10-16 | 江苏通用科技股份有限公司 | Bearing type all-steel radial tire bead structure |
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