阅读说明：本技术 子口部位着合面低气泡含量的全钢载重子午线轮胎 (All-steel truck radial tire with low air bubble content and adhered surface at bead opening part ) 是由 李冬阳 李宁基 杜保各 马楠 于 2019-10-12 设计创作，主要内容包括：一种子口部位着合面低气泡含量的全钢载重子午线轮胎,包括内衬层复合件、胎侧复合件,所述内衬层复合件包括气密层、过渡层,所述气密层的两侧分别与一个胎侧复合件的一侧连接,所述过渡层位于气密层的上表面,所述气密层、过渡层上下连接成一体,所述气密层的宽度大于过渡层的宽度,本发明中,气密层宽度大于过渡层宽度,气密层、过渡层、胎侧复合件均不会形成一个密封的空间,不会在子口部形成气泡,大大降低了轮胎脱圈以及爆胎的事故,气密层宽度增加后,气密层与胎侧复合件之间无缝对接,轮胎保气能力增加,大大降低了轮胎充气压力损失率,减少了轮胎的滚动阻力,减少了燃油消耗以及相应的二氧化碳排放。(The invention relates to an all-steel load-carrying radial tire with a seam part having a low air bubble content, which comprises an inner liner composite part and a sidewall composite part, wherein the inner liner composite part comprises an air-tight layer and a transition layer, two sides of the air-tight layer are respectively connected with one side of the sidewall composite part, the transition layer is positioned on the upper surface of the air-tight layer, the air-tight layer and the transition layer are connected into a whole up and down, the width of the air-tight layer is greater than that of the transition layer, in the invention, the width of the air-tight layer is greater than that of the transition layer, the air-tight layer, the transition layer and the sidewall composite part can not form a sealed space, air bubbles can not be formed at the seam part, the accidents of tire knocking off and tire burst are greatly reduced, after the width of the air-tight layer is increased, the air-tight layer and the sidewall composite part are in seamless butt joint, the, fuel consumption and corresponding carbon dioxide emissions are reduced.)

1. An all-steel heavy-duty radial tire with a low bubble content and a seam allowance, which is characterized in that: the composite inner liner part comprises an air-tight layer and a transition layer, wherein two sides of the air-tight layer are respectively connected with one side of one side wall composite part, the transition layer is positioned on the upper surface of the air-tight layer, the air-tight layer and the transition layer are connected into a whole up and down, and the width of the air-tight layer is greater than that of the transition layer.

2. The all-steel heavy duty radial tire having a bead-part-faced surface with a low bubble content according to claim 1, wherein: the airtight layer is made of natural rubber and comprises a first airtight section and two second airtight sections, two sides of the first airtight section are respectively connected with one side of one second airtight section, and the thickness of the second airtight section is gradually reduced from one side connected with the first airtight section to one side back to the first airtight section.

3. The all-steel heavy duty radial tire having a bead-part-faced surface with a low bubble content according to claim 2, wherein: the transition layer comprises a first transition section and two second transition sections, wherein two sides of the first transition section are respectively connected with one side of one second transition section, and the thickness of the second transition section is gradually reduced from one side connected with the first transition section to one side back to the first transition section.

4. The all-steel heavy duty radial tire having a bead-part-faced surface with a low bubble content according to claim 3, wherein: the distance between the edge of one side of the second transition section, which is back to the first transition section, and the edge of one side of the second airtight section, which is back to the first airtight section, on the same side is a difference level, and the difference level is not less than 5 mm.

5. The all-steel heavy duty radial tire having a bead-part-faced surface with a low bubble content according to claim 4, wherein: the difference level is 10 mm-20 mm.

6. The all-steel heavy duty radial tire having a bead-part-faced surface with a low bubble content according to claim 5, wherein: the difference level is 15 mm.

7. The all-steel heavy duty radial tire having a bead-part-faced surface with a low bubble content according to claim 3, wherein: the thickness of the edge of one side of the second airtight section, which faces away from the first airtight section, is not more than 2mm, and the thickness of the edge of one side of the second transition section, which faces away from the first transition section, is not more than 2 mm.

8. The all-steel heavy duty radial tire having a bead-part-faced surface with a low bubble content according to claim 7, wherein: the thickness of the edge of one side of the second airtight section, which faces away from the first airtight section, is 1.5mm, and the thickness of the edge of one side of the second transition section, which faces away from the first transition section, is 1.5 mm.

9. The all-steel heavy duty radial tire having a bead-part-faced surface with a low bubble content according to claim 2, wherein: the tire sidewall comprises a tire sidewall composite part, a transition layer and a tire sidewall connecting section, wherein the tire sidewall composite part is connected with the transition layer through the tire sidewall connecting section, the tire sidewall connecting section is made of wear-resistant glue, the thickness of the tire sidewall connecting section is gradually increased from one side connected with the transition layer to the side back to the transition layer, and the upper surface of the tire sidewall connecting section is connected with the lower surface of the second airtight section.

10. The all-steel heavy duty radial tire having a bead-part-faced surface with a low bubble content according to claim 1, wherein: the all-steel load-carrying radial tire with the seam allowance positioned at the seam allowance and low air bubble content further comprises two tire bead covers, a tire bead body, a tire body, a bead apex, a tire tread, a tire body cord fabric, a steel wire belt ply and a shoulder cushion gum, wherein the tire bead covers are positioned on the upper surface of the transition layer, two edges of the two sides of the transition layer are respectively attached with one tire bead cover, the tire bead covers are pressed on the upper part of the air tight layer beyond the transition layer, one side of the tire bead covers is connected with the upper surface of the transition layer, the other side of the tire bead covers is connected with the upper surface of the tire side composite piece, the tire body is pressed on the tire bead covers, a tire bead body is correspondingly arranged at the position of each tire bead cover, the outer side of the tire bead body is sequentially wrapped by the tire body, the tire bead covers and the inner liner composite piece, and the bead apex is filled in the tire body above, the bead filler is wrapped by the tire body, the upper part of the middle position of the tire body is pressed with the tire tread, the two side wall composite parts are distributed on two sides of the tire body, two sides of the tire tread are respectively connected with the other side of the opposite side wall connecting section of one side wall composite part correspondingly, the tire body cord fabric is pressed on the upper surface of the tire body between the tire tread and the tire body, a steel belt bundle layer is filled between the tire body cord fabric and the tire tread, shoulder pad rubber is filled on two sides of the steel belt bundle layer, and the shoulder pad rubber is surrounded by the tire tread, the side wall composite parts, the tire body cord fabric and the steel belt bundle layer.

Technical Field

The invention relates to the technical field of automobile tires, in particular to an all-steel truck radial tire with a low bubble content on a lamination surface at a bead part.

Background

The quality of the joint surface of the tire sub-opening part has great influence on the running safety of the vehicle, the tire sub-opening part corresponds to the position of the steel ring body in the tire, the tire sub-opening part is the area A in figure 1 or the area B in figures 2 and 3, in the process of processing the tyre, the steel ring body is wrapped by the tyre body, the tyre bead wrapping cloth and the inner lining layer composite piece, in the process of laminating the carcass body, the chafer and the inner liner composite part layer by layer, the air in the carcass body, the chafer and the inner liner composite part can not be completely discharged, and the air which can not be discharged can be driven by rolling subsequently, if air remains finally, air bubbles are formed at the tire bead part, once the air bubbles exist at the part, long-time abrasion and heat generation of a vehicle in the running process easily cause the tire steel ring body to be separated from the rim, and the great risk of tire knocking off and even tire burst is caused.

Disclosure of Invention

In view of the above, it is necessary to provide an all-steel heavy duty radial tire having a low bubble content in the tread area.

The all-steel truck radial tire with the seam allowance position and low air bubble content comprises an inner liner composite part and a sidewall composite part, wherein the inner liner composite part comprises an air-tight layer and a transition layer, two sides of the air-tight layer are respectively connected with one side of one sidewall composite part, the transition layer is positioned on the upper surface of the air-tight layer, the air-tight layer and the transition layer are connected into a whole up and down, and the width of the air-tight layer is larger than that of the transition layer.

Preferably, the airtight layer is made of natural rubber, and the airtight layer comprises a first airtight section and two second airtight sections, wherein two sides of the first airtight section are respectively connected with one side of one second airtight section, and the thickness of the second airtight section is gradually reduced from the side connected with the first airtight section to the side back to the first airtight section.

Preferably, the transition layer includes a first transition section and two second transition sections, two sides of the first transition section are respectively connected with one side of one second transition section, and the thickness of the second transition section is gradually reduced from the side connected with the first transition section to the side back to the first transition section.

Preferably, the distance between the edge of one side of the second transition section, which is back to the first transition section, and the edge of one side of the second airtight section, which is back to the first airtight section, is a difference level, and the difference level is not less than 5 mm.

Preferably, the difference level is 10mm to 20 mm.

Preferably, the difference level is 15 mm.

Preferably, the thickness of the edge of the side of the second airtight section facing away from the first airtight section is not more than 2mm, and the thickness of the edge of the side of the second transition section facing away from the first transition section is not more than 2 mm.

Preferably, the thickness of the edge of the side of the second airtight section facing away from the first airtight section is 1.5mm, and the thickness of the edge of the side of the second transition section facing away from the first transition section is 1.5 mm.

Preferably, the edge section of one side of the composite sidewall part connected with the transition layer is a sidewall connecting section, the sidewall connecting section is made of wear-resistant glue, the thickness of the sidewall connecting section is gradually increased from one side connected with the transition layer to one side back to the transition layer, and the upper surface of the sidewall connecting section is connected with the lower surface of the second airtight section.

Preferably, the all-steel load-carrying radial tire with the seam allowance position and low air bubble content further comprises two chafers, a tire bead body, a tire body, an apex, a tire tread, a tire body cord fabric, a steel wire belt ply and shoulder cushion rubber, wherein the two chafers are positioned on the upper surface of the transition layer, two edges of the two sides of the transition layer are respectively attached with one chafer, the chafers are pressed above the portion, exceeding the transition layer, of the airtight layer, one side of the chafer is connected with the upper surface of the transition layer, the other side of the chafer is connected with the upper surface of the tire side composite piece, the tire body is pressed above the chafer, a tire bead body is correspondingly arranged at the position of each chafer, the outer side of the tire bead body is sequentially wrapped by the tire body, the chafer and the inner liner composite piece, and the apex is filled in the tire body above the tire bead body, the bead filler is wrapped by the tire body, the upper part of the middle position of the tire body is pressed with the tire tread, the two side wall composite parts are distributed on two sides of the tire body, two sides of the tire tread are respectively connected with the other side of the opposite side wall connecting section of one side wall composite part correspondingly, the tire body cord fabric is pressed on the upper surface of the tire body between the tire tread and the tire body, a steel belt bundle layer is filled between the tire body cord fabric and the tire tread, shoulder pad rubber is filled on two sides of the steel belt bundle layer, and the shoulder pad rubber is surrounded by the tire tread, the side wall composite parts, the tire body cord fabric and the steel belt bundle layer.

According to the invention, the width of the airtight layer is larger than that of the transition layer, a sealed space cannot be formed by the airtight layer, the transition layer and the side wall composite part, and air bubbles cannot be formed at the seam allowance part, so that the accidents of tire knocking over and tire burst are greatly reduced, after the width of the airtight layer is increased, the airtight layer and the side wall composite part are in seamless butt joint, the air-retaining capacity of the tire is increased, the inflation pressure loss rate of the tire is greatly reduced, the rolling resistance of the tire is reduced, and the fuel consumption and the corresponding carbon dioxide emission are reduced.

Drawings

FIG. 1 is a cross-sectional view of an all-steel heavy duty radial tire having a low bubble content and a closed surface at the bead part.

FIG. 2 is a partially expanded view of a tire having an innerliner width less than the transition layer width.

FIG. 3 is a partially expanded view of a tire having an innerliner width greater than a transition layer width.

FIG. 4 is a graph of tire endurance performance for tires at different differential levels.

In the figure: the inner liner composite 10, the inner liner 11, the first airtight section 111, the second airtight section 112, the transition layer 12, the first transition section 121, the second transition section 122, the sidewall composite 20, the sidewall connecting section 21, the chafer 30, the bead body 40, the carcass body 50, the apex 60, the tread 70, the carcass ply 80, the steel belt 90, and the shoulder pad rubber 100.

Detailed Description

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Referring to fig. 1 to 3, an embodiment of the present invention provides an all-steel truck radial tire with a seam allowance portion having a low bubble content, including an inner liner composite 10 and a sidewall composite 20, where the inner liner composite 10 includes an air barrier 11 and a transition layer 12, two sides of the air barrier 11 are respectively connected to one side of the sidewall composite 20, the transition layer 12 is located on an upper surface of the air barrier 11, the air barrier 11 and the transition layer 12 are connected together, and a width of the air barrier 11 is greater than a width of the transition layer 12.

The width of the inner liner 11 is identified by L01 in fig. 2 and 3, and the width of the transition layer 12 is identified by L02 in fig. 2 and 3.

Referring to fig. 2, when the width of the liner 11 is smaller than that of the transition layer 12, the side edges of the transition layer 12 are pressed together with the sidewall composite member 20, and since the side edges of the liner 11 have a certain thickness, the liner 11, the transition layer 12 and the sidewall composite member 20 surround and form a sealed space, and the gas in the sealed air cannot be eliminated in the subsequent rolling driving process, so that bubbles are formed at this position, i.e., the area a in fig. 1 or the area B in fig. 2 and 3. Furthermore, when the width of the inner liner 11 is smaller than that of the transition layer 12, there is an area between the side edge of the inner liner 11 and the sidewall composite 20 which is not covered by the inner liner 11, and the air in the tire cavity is communicated with the atmosphere from this area which is not covered by the inner liner 11, resulting in high loss of tire inflation pressure, resulting in increased rolling resistance of the tire, increased fuel consumption and corresponding carbon dioxide emission.

Referring to fig. 3, in the present invention, the width of the inner liner 11 is greater than the width of the transition layer 12, the inner liner 11, the transition layer 12, and the sidewall composite member 20 do not form a sealed space, and no air bubble is formed at the seam, so that the accidents of tire knocking over and tire burst are greatly reduced, after the width of the inner liner 11 is increased, the inner liner 11 and the sidewall composite member 20 are in seamless butt joint, the air retention capacity of the tire is increased, the tire inflation pressure loss rate is greatly reduced, the rolling resistance of the tire is reduced, and the fuel consumption and the corresponding carbon dioxide emission are reduced.

Referring to fig. 1 to 3, further, the airtight layer 11 is made of natural rubber, the airtight layer 11 includes a first airtight section 111 and two second airtight sections 112, two sides of the first airtight section 111 are respectively connected to one side of one second airtight section 112, and the thickness of the second airtight section 112 gradually decreases from the side connected to the first airtight section 111 to the side facing away from the first airtight section.

Referring to fig. 1 to 3, further, the transition layer 12 includes a first transition section 121 and two second transition sections 122, two sides of the first transition section 121 are respectively connected with one side of one second transition section 122, and the thickness of the second transition section 122 is gradually reduced from the side connected with the first transition section 121 to the side facing away from the first transition section 121.

Referring to fig. 1 to 3, further, the distance between the edge of the second transition section 122 on the side facing away from the first transition section 121 and the edge of the second airtight section 112 on the same side facing away from the first airtight section 111 is a difference level, and the difference level is not less than 5 mm.

Referring to fig. 3, the difference level is half the difference between the width of the inner liner 11 and the width of the transition layer 12, i.e., (L01-L02)/2.

Referring to fig. 1 to 3, further, the difference level is 10mm to 20 mm.

Referring to fig. 1 to 3, further, the difference level is 15 mm.

Referring to fig. 1 to 3, further, the thickness of the edge of the second airtight section 112 on the side facing away from the first airtight section 111 is not greater than 2mm, and the thickness of the edge of the second transition section 122 on the side facing away from the first transition section 121 is not greater than 2 mm.

Referring to fig. 1 to 3, further, the thickness of the edge of the second airtight section 112 on the side facing away from the first airtight section 111 is 1.5mm, and the thickness of the edge of the second transition section 122 on the side facing away from the first transition section 121 is 1.5 mm.

Referring to fig. 1 to 3, further, one side edge section of the sidewall composite part 20 connected to the transition layer 12 is a sidewall connecting section 21, the sidewall connecting section 21 is made of wear-resistant glue, the thickness of the sidewall connecting section 21 gradually increases from the side connected to the transition layer 12 to the side back to the transition layer 12, and the upper surface of the sidewall connecting section 21 is connected to the lower surface of the second airtight section 112.

Referring to fig. 1 to 3, further, the all-steel heavy-duty radial tire with a low air bubble content and a seam allowance at the bead opening part further comprises two chafers 30, two bead bodies 40, a tire body 50, an apex 60, a tread 70, a tire cord 80, a steel belt layer 90 and a shoulder pad rubber 100, wherein the chafers 30 are positioned on the upper surface of the transition layer 12, two chafers 30 are respectively attached to two side edges of the transition layer 12, the chafer 30 is pressed above the portion, which exceeds the transition layer 12, of the airtight layer 11, one side of the chafer 30 is connected with the upper surface of the transition layer 12, the other side of the chafer 30 is connected with the upper surface of the sidewall composite member 20, the tire body 50 is pressed above the chafer 30, one bead body 40 is correspondingly arranged at the position of each chafer 30, and the outer side of the bead body 40 is sequentially composed of the tire body 50, the chafer 30, the bead body 40, The inner liner composite part 10 is wrapped, the apex 60 is filled in the tire body 50 above the tire bead body 40, the apex 60 is wrapped by the tire body 50, the upper part of the middle position of the tire body 50 is pressed with a tire tread 70, two side wall composite parts 20 are distributed on two sides of the tire body 50, two sides of the tire tread 70 are respectively correspondingly connected with the other side of the side wall composite part 20 opposite to the side wall connecting section 21, a tire cord 80 is pressed on the upper surface of the tire body 50 between the tire tread 70 and the tire body 50, a steel belt ply 90 is filled between the tire cord 80 and the tire tread 70, two sides of the steel belt ply 90 are filled with shoulder pad glue 100, and the shoulder pad glue 100 is surrounded by the tire tread 70, the side wall composite parts 20, the tire cord 80 and the steel belt ply 90.

The following table specifically shows the tire durability data for different differential levels for a 1.5mm edge thickness of the second airtight section 112 and the second transition section 122.

Referring to fig. 4, it can be seen that the difference is 10 to 14, the endurance of the tire is slightly decreased after steadily increasing with the increase of the difference, the better endurance of the tire is mostly concentrated on 250000kw and 240000kw with the difference of 16 to 20, and the endurance of the tire is a sudden change of 300000km and is significantly higher than that of other poor tires with the difference of 15mm, and the tire shows excellent endurance.

The modules or units in the device of the embodiment of the invention can be combined, divided and deleted according to actual needs.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention.