CN112440630A - Toe opening structure of all-steel radial tire with inner tube - Google Patents
Toe opening structure of all-steel radial tire with inner tube Download PDFInfo
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- CN112440630A CN112440630A CN202011442178.3A CN202011442178A CN112440630A CN 112440630 A CN112440630 A CN 112440630A CN 202011442178 A CN202011442178 A CN 202011442178A CN 112440630 A CN112440630 A CN 112440630A
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- protective layer
- toe
- tire
- nylon protective
- layer
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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
- B60C15/00—Tyre beads, e.g. ply turn-up or overlap
- B60C15/06—Flipper strips, fillers, or chafing strips and reinforcing layers for the construction of the bead
- B60C15/0603—Flipper strips, fillers, or chafing strips and reinforcing layers for the construction of the bead characterised by features of the bead filler or apex
- B60C15/0607—Flipper strips, fillers, or chafing strips and reinforcing layers for the construction of the bead characterised by features of the bead filler or apex comprising several parts, e.g. made of different rubbers
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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
- B60C15/00—Tyre beads, e.g. ply turn-up or overlap
- B60C15/06—Flipper strips, fillers, or chafing strips and reinforcing layers for the construction of the bead
- B60C15/0628—Flipper strips, fillers, or chafing strips and reinforcing layers for the construction of the bead comprising a bead reinforcing layer
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Tires In General (AREA)
Abstract
The invention relates to an all-steel radial tire toe opening structure with an inner tube, wherein a hard bead filler and a soft bead filler are sequentially wrapped by a tire framework and a toe opening reinforcing layer from inside to outside in a U shape, the end of the outer side of the tire framework is lower than the upper end of the soft bead filler, the ends of the two ends of the toe opening reinforcing layer are respectively positioned below the ends of the two ends of the tire framework, an outer nylon protective layer is positioned on the outer side of the soft bead filler, the lower end of the outer nylon protective layer is positioned between the tire framework and the outer end of the toe opening reinforcing layer, the upper end of the outer nylon protective layer is lower than the upper end of the soft bead filler, an inner nylon protective layer is positioned on the outer side of the soft bead filler, and the lower end of the inner nylon protective layer is positioned. By applying the toe opening wrapping cloth structure and the tire bead lower wrapping cloth structure, the deformation resistance of the tire bead position is improved, and the damage of stress concentration of a tire body turn-up end point and a steel wire ring end point to the toe opening of the tire is eliminated.
Description
Technical Field
The invention belongs to the technical field of tires, and particularly relates to a toe opening structure of an all-steel radial tire with an inner tube.
Background
The information in this background section is only for enhancement of understanding of the general background of the invention and is not necessarily to be construed as an admission or any form of suggestion that this information forms the prior art that is already known to a person of ordinary skill in the art.
The existing automobile all-steel radial tire with the inner tube comprises an inner hard triangular rubber core, an outer soft triangular rubber core, a tire body cord fabric, a toe mouth reinforcing steel wire cord fabric, a toe mouth rubber, a tire side rubber and a toe mouth filling rubber, wherein the inner hard triangular rubber core and the soft triangular rubber core are sequentially wrapped by the tire body cord fabric and the toe mouth reinforcing steel wire cord fabric from inside to outside, an inner liner is further wrapped on the inner side of a tire toe mouth structure wrapping the tire body cord fabric and the toe mouth reinforcing steel wire cord fabric, the tire toe mouth structure outer side wrapping the tire body cord fabric and the toe mouth reinforcing steel wire cord fabric is further wrapped by the toe mouth filling rubber, the lower end of the tire toe mouth structure is wrapped by the toe mouth rubber, the toe mouth rubber is wrapped to form a U shape, and the upper end part of the outer side of the toe mouth rubber is. Under the condition of standard load, the toe opening supporting performance and the flexing resistance can meet the driving requirements of vehicles, but aiming at the use environments with poor road conditions, large curves and non-standard road condition management and the use conditions of overload, high air pressure and the like, the toe opening design mode generally has the problems of empty and explosion of the toe opening of the tire caused by the defects of insufficient supporting performance, low flexing resistance, easy stress concentration and the like. In addition, under the use conditions of poor road conditions, serious overload, low air pressure and the like, the tire bead structure is large in deformation and is bent on a rim flange, the tire body cord fabric reversely-wrapping part and the bead wire wrapping cloth at the position near the rim flange area are compressed and deformed to form stress concentration, the tire has the quality problems of empty rim, ring crack, explosion and the like, particularly, at the position of a bead heel, due to the supporting and friction action of the rim, the tire body cord fabric is broken by a steel wire ring under higher load to cause tire burst.
Disclosure of Invention
In view of the problems in the prior art, the invention aims to provide an all-steel radial tire toe structure with an inner tube.
In order to solve the technical problems, the technical scheme of the invention is as follows:
a toe opening structure of an all-steel radial tire with an inner tube comprises an inner hard bead filler, an outer soft bead filler, a tire frame, a toe opening reinforcing layer, an outer nylon protective layer, an inner nylon protective layer and a bead lower nylon, wherein the outer soft bead filler and the outer soft bead filler are sequentially wrapped by the tire frame and the toe opening reinforcing layer in a U shape from inside to outside, the inner end of the tire frame is positioned on the outer side of the soft bead filler, the outer end of the tire frame is lower than the upper end of the soft bead filler, the two ends of the toe opening reinforcing layer are respectively positioned below the two ends of the tire frame, the inner nylon protective layer is positioned on the outer side of the soft bead filler, the lower end of the inner nylon protective layer is positioned on the inner side of the reverse wrapping of the tire frame, the upper end of the inner nylon protective layer is lower than the upper end of the soft bead filler, and the outer nylon protective layer is wrapped on, the lower end of the outer nylon protective layer is higher than the inner end of the toe mouth reinforcing layer.
The invention improves the deformation resistance of the tire bead position and eliminates the damage of stress concentration of the tire body turn-up end point and the steel wire ring end point to the tire toe opening by applying the inner and outer nylon protective layers, the toe opening wrapping cloth structure and the nylon under the tire bead.
The invention has the beneficial effects that:
through the innovative design of tire bead, structural style and material distribution, the support performance of the toe opening position and the flexural rigidity of the toe opening position under a high-load condition are improved, the stress dispersion capability of the end point position is improved, and the damage of the stress concentration of the end point position to the tire is reduced.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.
FIG. 1 is a toe structure of an all-steel radial tire with an inner tube of the invention;
the tire comprises an inner liner layer 1, a tire framework 2, a toe opening reinforcing layer 3, a hard apex rubber core 4, a toe opening rubber core 5, a toe opening rubber core 6, a sidewall rubber core 7, a toe opening wear-resistant layer 8, a soft apex rubber core 9, a nylon under a tire bead 10, an outer nylon protective layer 11, an inner nylon protective layer 12 and a steel wire ring.
Detailed Description
It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present disclosure. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
Example 1
An all-steel radial tire toe opening structure with an inner tube comprises an inner hard bead apex 4, an outer soft bead apex 8, a tire framework 2, a toe opening reinforcing layer 3, an outer nylon protective layer 10, an inner nylon protective layer 11 and a bead lower nylon 9, wherein the hard bead apex 4 and the soft bead apex 8 are sequentially wrapped by the tire framework 2 and the toe opening reinforcing layer 3 in a U shape from inside to outside, the end of the outer side of the tire framework 2 is lower than the upper end of the soft bead apex 8, the two ends of the toe opening reinforcing layer 3 are respectively positioned below the ends of the two ends of the tire framework 2, the outer nylon protective layer 10 is positioned on the outer side of the soft bead apex 8, the lower end of the outer nylon protective layer 10 is positioned between the outer ends of the tire framework 2 and the toe opening reinforcing layer 3, the upper end of the outer nylon protective layer 10 is lower than the upper end of the soft bead apex 8, the inner nylon protective layer 11 is positioned on the outer side of the soft bead apex, the lower end of the inner nylon protection layer 11 is positioned at the inner side of the turn-up of the tire framework 2, and the upper end of the inner nylon protection layer 11 is lower than the upper end of the soft bead filler 8.
In the present invention, the inner liner is generally an inner side of the tire, which is opposite to the inner tube, and the outer side is a side of the tire exposed to the outside.
The tire frame 2 is arranged in the toe opening structure of the tire, so that the strength of the toe opening part of the tire is improved, and the tire frame 2 wraps the hard triangular rubber core 4 and the soft triangular rubber core 8, so that the service life of the toe opening is prolonged.
The tyre frame 2 is matched with the toe opening wear-resistant layer to protect the toe opening structure, and the inner nylon protective layer and the outer nylon protective layer are arranged at the outer ends of the toe openings, so that the supporting capability and the deformation resistance of the toe opening part are improved.
According to a further technical scheme, the tire further comprises a nylon 9 under the tire bead, the tire frame 2 wraps the nylon under the tire bead in a U shape, the nylon 9 under the tire bead wraps the hard triangular rubber core 4 and the soft triangular rubber core 8 in a U shape, the outer end of the nylon 9 under the tire bead is located at the upper end of the outer side of the hard triangular rubber core, the inner end of the nylon under the tire bead is located above the upper end of the inner side of the hard triangular rubber core, and the inner end of the soft triangular rubber core is located below the upper end of the inner side.
The nylon is arranged between the tire frame and the hard and soft triangle rubber cores under the tire bead, plays a role in buffering, and improves the deformation resistance.
As a further technical scheme, the outer nylon protective layer 10 wraps the toe mouth reinforcing layer in a U shape, and the outer end head of the outer nylon protective layer 10 is higher than the upper end head of the toe mouth reinforcing layer 3.
The outer nylon protective layer 10 wraps the toe reinforcing layer, and the load resistance of the tire is improved.
As a further technical scheme, outer nylon protective layer 10 comprises two-layer nylon protective layer, is first inlayer nylon protective layer and first outer nylon protective layer respectively, and first inlayer nylon protective layer is located the inboard of first outer nylon protective layer, and the outside end of first outer nylon protective layer is less than the outside end of first inlayer nylon protective layer, and the inboard end of first outer nylon protective layer is less than the inboard end of first inlayer nylon protective layer.
As a further technical scheme, the inner nylon protection layer 11 is located on the outer side of the soft triangle rubber core, the lower end head of the inner nylon protection layer is located on the inner side of the tire frame reverse wrapping, and the upper end head of the inner nylon protection layer is lower than the upper end head of the soft triangle rubber core.
Further, interior nylon protective layer 11 comprises two-layer nylon protective layer, is second inlayer nylon protective layer and second outer nylon protective layer respectively, and second inlayer nylon protective layer is located the inboard of second outer nylon protective layer, and the outside end of second outer nylon protective layer is higher than the outside end of second inlayer nylon protective layer, and the medial extremity of second outer nylon protective layer is higher than the inboard end of second inlayer nylon protective layer.
The inner and outer nylon protective layers are formed by compounding two nylon protective layers, and the two nylon protective layers are different in height, so that the deformation resistance of the toe mouth structure is further improved.
As a further technical proposal, toe-mouth glue 5 is arranged between the outer end point of the toe-mouth reinforcing layer and the inner and outer nylon protective layers. The toe-mouth glue 5 improves the connection strength between the toe-mouth reinforcing layer 3 and the double-layer nylon explosion-proof protective layer and reduces the stress deformation of the end point of the toe-mouth reinforcing layer.
As further technical scheme, still include inner liner 1, inner liner 1 is located tire skeleton 2's inboard, and inner liner 1 is the outer nylon protective layer of U type parcel, and the outside end of inner liner is less than the outside end of outer nylon protective layer.
As further technical scheme, still include toe mouth wearing layer 7, toe mouth wearing layer 7 is U type parcel inner liner and outer nylon protective layer, and the outside end of toe mouth wearing layer 7 is less than the outside end of outer nylon protective layer 10, and the inboard end of toe mouth wearing layer 7 is less than the inboard end of inner liner.
As a further technical scheme, the toe wear-resistant layer comprises a sidewall rubber 6, wherein the sidewall rubber 6 is positioned above the lateral end of the toe wear-resistant layer 7.
As a further technical scheme, the rubber ring further comprises a steel wire ring 12, and the steel wire ring 12 is positioned at the lower part of the hard triangle rubber core 4.
As a further technical scheme, the tire framework 2 is made of steel wires.
As a further technical scheme, the toe wear-resistant layer 7 is made of high-hardness rubber.
The tire structure of embodiment 1 and the tire structure of the record in the background art carry out the indoor machine tool test, and the tire structure of the record in the background art is that hard apex rubber core and soft apex rubber core from inside to outside are in proper order by matrix curtain cloth, toe mouth reinforcing wire cord fabric parcel, and the tire toe mouth structure inboard that has wrapped up matrix curtain cloth, toe mouth reinforcing wire cord fabric has still wrapped up the inner liner, and the tire toe mouth structure outside that has wrapped up matrix curtain cloth, toe mouth reinforcing wire cord fabric has still wrapped up toe mouth filling glue, tire toe mouth structure lower extreme is wrapped up by toe mouth glue, and this toe mouth glue parcel forms the U type, the outside upper end tip parcel of toe mouth glue has the child side glue.
Testing according to the indoor machine tool test method shown in the table 1, polishing the tire tread before assembling the tire, polishing the tire tread to the bottom of a tire pattern groove, and reserving the pattern depth (0-1) mm according to the polishing precision requirement;
TABLE 1 all-steel wire truck radial ply automobile tire bead endurance test conditions
The tire structure improves the endurance time of the toe under the same compressive stress and frictional force conditions, as shown in table 2.
TABLE 2 indoor machine tool test results
| Test items | Common tyre | Tyre with new structure |
| Durable seam allowance | 53h50min | 129h19min |
From the test results in Table 2, the inventive regimen lasted approximately 130 hours, while the old design toe-in lasted less than 60 hours before the toe-in lasted, the superiority of the overall toe-in performance was evident.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides an all steel radial tire toe mouth structure that has inner tube which characterized in that: comprises a hard apex rubber core at the inner side, a soft apex rubber core at the outer side, a tire framework and a toe opening reinforcing layer, outer nylon protective layer, interior nylon protective layer, nylon under the tire bead, stereoplasm triangle glues core and soft triangle and glues the core by interior outside to by tire skeleton in proper order, the toe mouth enhancement layer is U type parcel, the inboard end of tire skeleton is located the outside of soft triangle and glues the core, the outside end of tire skeleton is less than the upper end of soft triangle and glues the core, the both ends end of toe mouth enhancement layer is located the below of tire skeleton both ends end respectively, interior nylon protective layer is located the outside of soft triangle and glues the core, the lower extreme end of interior nylon protective layer is located tire skeleton turn-ups inboard, the upper end of interior nylon protective layer is less than the upper end of soft triangle and glues the core, outer nylon protective layer is U type parcel and lives the toe mouth enhancement layer, the lower extreme end of outer nylon protective layer is higher than the inner enhancement.
2. The toe box structure of an all-steel radial tire with inner tube according to claim 1, wherein: the tire comprises a tire bead, a tire frame, a hard bead apex rubber core, a soft bead apex rubber core and a rubber layer, wherein the tire frame is U-shaped, the rubber layer wraps the nylon under the tire bead, the outer end of the nylon under the tire bead is located at the upper end of the outer side of the hard bead apex rubber core, the inner end of the nylon under the tire bead is located above the upper end of the inner side of the hard bead apex rubber core, and the inner end.
3. The toe box structure of an all-steel radial tire with inner tube according to claim 1, wherein: the U-shaped toe opening reinforcing layer is wrapped by the outer nylon protective layer, and the outer end head of the outer nylon protective layer is higher than the upper end head of the toe opening reinforcing layer.
4. The toe box structure of an all-steel radial tire with inner tube according to claim 1, wherein: the outer nylon protective layer comprises two-layer nylon protective layer, is first inlayer nylon protective layer and first outer nylon protective layer respectively, and first inlayer nylon protective layer is located the inboard of first outer nylon protective layer, and the outside end of first outer nylon protective layer is less than the outside end of first inlayer nylon protective layer, and the inboard end of first outer nylon protective layer is less than the inboard end of first inlayer nylon protective layer.
5. The toe box structure of an all-steel radial tire with inner tube according to claim 1, wherein: the inner nylon protective layer is positioned on the outer side of the soft triangular rubber core, the lower end head of the inner nylon protective layer is positioned on the inner side of the tyre skeleton reverse bag, and the upper end head of the inner nylon protective layer is lower than the upper end head of the soft triangular rubber core;
preferably, the interior nylon protective layer comprises two-layer nylon protective layer, is second inlayer nylon protective layer and second outer nylon protective layer respectively, and second inlayer nylon protective layer is located the inboard of second outer nylon protective layer, and the outside end of second outer nylon protective layer is higher than the outside end of second inlayer nylon protective layer, and the medial extremity of second outer nylon protective layer is higher than the inboard end of second inlayer nylon protective layer.
6. The toe box structure of an all-steel radial tire with inner tube according to claim 1, wherein: and toe-mouth glue is arranged between the outer end point of the toe-mouth reinforcing layer and the inner and outer nylon protective layers. The toe-mouth-shaped glue improves the connection strength between the toe-mouth reinforcing layer and the double-layer nylon explosion-proof protective layer and reduces the stress deformation of the end point of the toe-mouth reinforcing layer.
7. The toe box structure of an all-steel radial tire with inner tube according to claim 1, wherein: still include the inner liner, the inner liner is located tire skeleton's inboard, and the inner liner is the outer nylon protective layer of U type parcel, and the outside end of inner liner is less than the outside end of outer nylon protective layer.
8. The toe box structure of an all-steel radial tire with inner tube according to claim 7, wherein: still include the toe mouth wearing layer, the toe mouth wearing layer is U type parcel inner liner and outer nylon protective layer, and the outside end of toe mouth wearing layer is less than the outside end of outer nylon protective layer, and the inboard end of toe mouth wearing layer is less than the inboard end of inner liner.
9. The toe box structure of an all-steel radial tire with inner tube according to claim 8, wherein: the toe wear-resistant layer is characterized by also comprising a sidewall rubber, wherein the sidewall rubber is positioned above the side of the end head at the outer side of the toe wear-resistant layer;
or the steel wire ring is positioned at the lower part of the hard triangular rubber core.
10. The toe box structure of an all-steel radial tire with inner tube according to claim 1, wherein: the tire framework is made of steel wires;
or the toe wear-resistant layer is made of high-hardness rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011442178.3A CN112440630A (en) | 2020-12-11 | 2020-12-11 | Toe opening structure of all-steel radial tire with inner tube |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011442178.3A CN112440630A (en) | 2020-12-11 | 2020-12-11 | Toe opening structure of all-steel radial tire with inner tube |
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| CN112440630A true CN112440630A (en) | 2021-03-05 |
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| CN202011442178.3A Pending CN112440630A (en) | 2020-12-11 | 2020-12-11 | Toe opening structure of all-steel radial tire with inner tube |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114851781A (en) * | 2022-04-20 | 2022-08-05 | 通力轮胎有限公司 | Heavy-load radial tire and manufacturing method thereof |
-
2020
- 2020-12-11 CN CN202011442178.3A patent/CN112440630A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114851781A (en) * | 2022-04-20 | 2022-08-05 | 通力轮胎有限公司 | Heavy-load radial tire and manufacturing method thereof |
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