CN110936771A - Bead part for improving bearing performance of tubeless tire - Google Patents
Bead part for improving bearing performance of tubeless tire Download PDFInfo
- Publication number
- CN110936771A CN110936771A CN201911114923.9A CN201911114923A CN110936771A CN 110936771 A CN110936771 A CN 110936771A CN 201911114923 A CN201911114923 A CN 201911114923A CN 110936771 A CN110936771 A CN 110936771A
- Authority
- CN
- China
- Prior art keywords
- rubber
- nylon
- bead
- layer
- wrapping
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000011324 bead Substances 0.000 title claims abstract description 76
- 239000004677 Nylon Substances 0.000 claims abstract description 92
- 229920001778 nylon Polymers 0.000 claims abstract description 92
- 239000004744 fabric Substances 0.000 claims abstract description 47
- 230000007704 transition Effects 0.000 claims abstract description 25
- 239000000853 adhesive Substances 0.000 claims description 7
- 230000001070 adhesive effect Effects 0.000 claims description 7
- 210000001503 joint Anatomy 0.000 claims description 4
- 239000000945 filler Substances 0.000 claims 8
- 239000003292 glue Substances 0.000 claims 1
- 229910000831 Steel Inorganic materials 0.000 abstract description 13
- 239000010959 steel Substances 0.000 abstract description 13
- 230000003014 reinforcing effect Effects 0.000 abstract description 5
- 238000005452 bending Methods 0.000 abstract description 2
- 230000002787 reinforcement Effects 0.000 description 7
- 239000012141 concentrate Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010618 wire wrap Methods 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Images
Classifications
-
- 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
- B60C15/0009—Tyre beads, e.g. ply turn-up or overlap features of the carcass terminal portion
-
- 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
-
- 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
-
- 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
-
- 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
- B60C2015/0614—Flipper strips, fillers, or chafing strips and reinforcing layers for the construction of the bead characterised by features of the chafer or clinch portion, i.e. the part of the bead contacting the rim
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Tires In General (AREA)
Abstract
The invention provides a bead part for improving the bearing performance of a tubeless tire, which comprises a bead, a filling rubber, a turn-up tire body, a transition rubber sheet group, a nylon wrapping cloth group, a bead wrapping rubber, a bead wear-resistant rubber and a sidewall rubber, wherein the bead is arranged in the turn-up tire body, the filling rubber is arranged above the bead between the tire body and the turn-up tire body, the bead wrapping rubber is wrapped at a bead joint part between the filling rubber and the turn-up tire body, the bead wrapping rubber wraps the lower part of the bead wear-resistant rubber, the sidewall rubber wraps the rubber sheet along the outer sides of the bead wrapping rubber and the bead wear-resistant rubber, the transition rubber group is attached between the filling rubber and the turn-up tire body, and the nylon wrapping cloth group is attached between the transition rubber sheet group, the bead wrapping rubber sheet and the bead wear-resistant rubber, in the scheme, a steel wire reinforcing layer at the bead part is cancelled, a nylon wrapping cloth layer is used for replacing, the rigidity of, the effective bending and fishing area of the tire is increased.
Description
Technical Field
The invention relates to the technical field of tire preparation, in particular to a bead part for improving the bearing performance of a tubeless tire.
Background
Road transportation environment is complicated in China, some areas are overloaded seriously, vehicle types used in the overloaded areas are generally heavy-duty vehicle types, tires used in heavy-duty vehicles are tires with inner tubes, tire bead positions of the tires are reinforced, and the bearing performance is good. In recent years, with the change of road transportation environment in China, the vehicle type for transportation is also continuously changed, and the used tire is gradually changed from a tire with an inner tube to a tire without the inner tube. However, the structure of the tire bead part of the common tubeless tire usually adopts a layer of steel wire wrapping cloth structure, and under the heavy-load use condition, the sinking rate of the tire is high, the stress of the tire bead part is easy to concentrate, the bearing performance of the tire is poor, the tire bead part is damaged early, and the use requirement of a heavy-duty vehicle with large tonnage cannot be met. As shown in fig. 3.
Disclosure of Invention
There is a need for a bead portion that improves the load carrying properties of tubeless tires.
A bead part for improving the bearing performance of a tubeless tire comprises a bead, filling rubber, a turn-up tire body, a transition rubber sheet group, a nylon wrapping cloth group, bead wrapping rubber, bead wear-resistant rubber and bead side rubber, wherein the bead is arranged in the turn-up tire body, the filling rubber is arranged above the bead between the tire body and the turn-up tire body, the bead wrapping rubber is wrapped at a bead joint part between the filling rubber and the turn-up tire body, the bead wear-resistant rubber is wrapped at the lower part of the bead wrapping rubber and the bead wrapping rubber, the bead side rubber is wrapped along the outer sides of the bead wrapping rubber and the bead wear-resistant rubber, the transition rubber sheet group is attached between the filling rubber and the turn-up tire body, and the nylon wrapping cloth group is attached between the transition rubber sheet group and the bead wrapping rubber and the bead wear-.
Preferably, the nylon cloth-wrapping group comprises a first nylon cloth-wrapping layer, a second nylon cloth-wrapping layer and a third nylon cloth-wrapping layer, the length of the third nylon cloth-wrapping layer is less than that of the first nylon cloth-wrapping layer and the second nylon cloth-wrapping layer, the third nylon cloth-wrapping layer is attached to the outer side of the first rubber sheet of the transition rubber sheet group, the third nylon cloth-wrapping layer is attached to the joint of the reverse rubber-wrapping body and the filling rubber to transmit or resist the stress of the end part of the reverse rubber-wrapping body, the second nylon cloth-wrapping layer covers the outer side of the third nylon cloth-wrapping layer, the side edge of the upper end of the second nylon cloth-wrapping layer is higher than the side edge of the upper end of the third nylon cloth-wrapping layer and lower than the side edge of the upper end of the first rubber sheet, the side edge of the lower end of the second nylon cloth-wrapping layer is lower than the side edge of the first rubber sheet of the transition rubber sheet group to be attached to the outer side of the reverse rubber-wrapping body, the first nylon cloth-wrapping layer covers the outer, the side edge of the lower end of the first nylon wrapping cloth layer is higher than the side edge of the lower end of the second nylon wrapping cloth layer.
Preferably, the transition film group comprises a first film and a second film, wherein the two side edges of the second film are respectively attached to the turn-up tire body and the filling adhesive, so that the joint part of the turn-up tire body and the filling adhesive covers the first film and covers the outer side of the second film, the joint part of the first film and the filling adhesive covers, and the joint part of the first film and the turn-up tire body covers.
In the invention, the steel wire reinforcing layer at the tire bead part is eliminated, so that the rigidity of the tire bead part is reduced, the stress strain at the end part of the steel wire is reduced, and the effective bending and fishing area of the tire is increased.
After a steel wire wrapping cloth reinforcing layer which easily causes stress concentration is cancelled, in order to increase the bearing performance of a tire bead position, three layers of nylon wrapping cloth are adopted for reinforcing the tire bead position, the difference level of the three layers of nylon wrapping cloth is A, B and is 10-15mm, the cutting angle of the nylon wrapping cloth is 40-45 degrees, a first nylon wrapping cloth layer and a third nylon wrapping cloth layer in the paving direction are in the same direction, and the paving direction of the second nylon wrapping cloth layer is opposite to that of the first nylon wrapping cloth layer and the third nylon wrapping cloth layer.
In order to reduce the stress strain of the nylon wrapping cloth and the carcass steel wire, two layers of isolating films are added between the three layers of nylon wrapping cloth and the reverse wrapping carcass steel wire. The difference between the two layers of films is kept at a + b of 5-10mm, and the edge of the film and the edge of the nylon wrapping cloth are kept flush.
Drawings
FIG. 1 is a schematic view of a bead portion of the present invention.
Fig. 2 is a development view of a bead portion of the present invention.
Fig. 3 is a schematic view of a prior art bead portion.
In the figure: the rubber tire comprises a tire bead 11, filling rubber 12, a turn-up tire body 13, a transition rubber sheet group 14, a first rubber sheet 141, a second rubber sheet 142, a nylon wrapping cloth group 15, a first nylon wrapping cloth layer 151, a second nylon wrapping cloth layer 152, a third nylon wrapping cloth layer 153, a bead sealing rubber 16, a bead wear-resistant rubber 17 and a tire side rubber 18.
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 and 2, a bead portion for improving a bearing performance of a tubeless tire is provided in an embodiment of the present invention, and includes a bead 11, a filling rubber 12, a turn-up tire body 13, a transition rubber sheet group 14, a nylon wrapping cloth group 15, a bead wrapping rubber 16, a bead wear-resistant rubber 17, and a sidewall rubber 18, where the bead 11 is disposed inside the turn-up tire body 13, the filling rubber 12 is disposed above the bead 11 between the tire body and the turn-up tire body 13, the bead wrapping rubber 16 is wrapped at a bead combining portion between the filling rubber 12 and the turn-up tire body 13, the bead wear-resistant rubber 17 wraps a lower portion of the bead wrapping rubber 16, the sidewall rubber 18 wraps along outer sides of the bead wrapping rubber 16 and the bead wear-resistant rubber 17, the transition rubber sheet group 14 is attached between the filling rubber 12 and the turn-up tire body 13, and the nylon wrapping cloth group 15 is attached between the transition rubber sheet group 14 and the bead wrapping rubber 16 and the bead.
In the existing reinforcing scheme of the tubeless tire bead 11, a layer of wirecloth is added at the position of the bead 11, or a layer of wirecloth is added at the position of the bead 11, and then one or two layers of nylon cloth materials are added for reinforcement. The tire using the steel wire reinforcement or the steel wire reinforcement layer and the nylon reinforcement layer has the advantages that the rigidity of the tire bead 11 part is high, the whole bendable region of the tire becomes small, when the heavy-duty vehicle type tire is used, the tire has large subsidence, the stress received at the steel wire reinforcement and nylon reinforcement tire bead 11 part is large, and the stress is easily concentrated at the end point of the steel wire reinforcement layer, so that the tire bead 11 part is damaged by being hollowed and cannot be normally used.
In the scheme, the steel wire cloth covering layer is removed, and the problem that the stress of the end point part is easy to concentrate due to high steel wire hardness and poor toughness is solved.
Further, the nylon cloth-wrapping group 15 includes a first nylon cloth-wrapping layer 151, a second nylon cloth-wrapping layer 152, and a third nylon cloth-wrapping layer 153, the length of the third nylon cloth-wrapping layer 153 is less than the lengths of the first nylon cloth-wrapping layer 151 and the second nylon cloth-wrapping layer 152, the third nylon cloth-wrapping layer 153 is attached to the outer side of the first rubber sheet 141 of the transition rubber sheet group 14, the third nylon cloth-wrapping layer 153 is attached to the joint of the turn-up rubber body 13 and the filling rubber 12 to transmit or resist the stress at the end of the turn-up rubber body 13, the second nylon cloth-wrapping layer 152 covers the outer side of the third nylon cloth-wrapping layer 153, the side of the upper end of the second nylon cloth-wrapping layer 152 is higher than the side of the upper end of the third nylon cloth-wrapping layer 153 and lower than the side of the upper end of the first rubber sheet 141, the side of the lower end of the second nylon cloth-wrapping layer 152 is lower than the side of the, the first nylon cloth layer 151 covers the outer side of the second nylon cloth layer 152, the side edge of the upper end of the first nylon cloth layer 151 is higher than the side edge of the upper end of the third nylon cloth layer 153, and the side edge of the lower end of the first nylon cloth layer 151 is higher than the side edge of the lower end of the second nylon cloth layer 152.
Further, the transition film group 14 includes a first film 141 and a second film 142, the two side edges of the second film 142 are respectively attached to the turn-up carcass 13 and the filling adhesive 12, so as to cover the joint of the turn-up carcass and the filling adhesive 12 with the first film 141 and the outer side of the second film 142, so as to cover the butt joint of the first film 141 and the filling adhesive 12 and the butt joint of the first film 141 and the turn-up carcass 13, thereby forming a step transition type attachment, so that the turn-up carcass 13 and the nylon cloth-wrapping group 15 are transitionally connected by the transition film, the transition film forms a buffer transition connection between the turn-up carcass 13 and the nylon cloth-wrapping group 15, and the stress concentration at the end of the turn-up carcass 13 is avoided.
In the scheme, the upper ends of the three nylon cloth wrapping layers form an attaching structure which gradually decreases from outside to inside in a stepped manner, so that the nylon cloth wrapping layer close to the end part of the reversely wrapped tire body 13 is the last nylon cloth wrapping layer, and the strength of the nylon cloth wrapping layer is increased.
Because the intensity of nylon infantees layer is very high, as long as play the effect of guaranteeing rim of a mouth joint portion intensity, and the film group plays the buffering connection effect, increases the tight degree of being connected between matrix and the nylon infantees layer.
The modules or units in the device of the embodiment of the invention can be combined, divided and deleted according to actual needs.
The above disclosure is only illustrative of the preferred embodiments of the present invention, which should not be taken as limiting the scope of the invention, but rather the invention can be embodied in other specific forms without departing from the spirit or essential characteristics thereof. It will be understood by those skilled in the art that all or a portion of the above-described embodiments may be practiced and equivalents thereof may be resorted to as falling within the scope of the invention as claimed. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911114923.9A CN110936771B (en) | 2019-11-14 | 2019-11-14 | Tire bead part for improving bearing performance of tubeless tire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911114923.9A CN110936771B (en) | 2019-11-14 | 2019-11-14 | Tire bead part for improving bearing performance of tubeless tire |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110936771A true CN110936771A (en) | 2020-03-31 |
| CN110936771B CN110936771B (en) | 2024-12-17 |
Family
ID=69906562
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911114923.9A Active CN110936771B (en) | 2019-11-14 | 2019-11-14 | Tire bead part for improving bearing performance of tubeless tire |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110936771B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05178039A (en) * | 1992-01-08 | 1993-07-20 | Bridgestone Corp | Pneumatic radial tire for heavy load |
| JP2001010312A (en) * | 1999-06-29 | 2001-01-16 | Sumitomo Rubber Ind Ltd | Tubeless tire |
| JP2001105810A (en) * | 1999-10-07 | 2001-04-17 | Bridgestone Corp | Pneumatic tire |
| KR20020003023A (en) * | 2000-06-30 | 2002-01-10 | 조충환 | Heavy duty radial tire having improved bead durability |
| KR101781947B1 (en) * | 2016-04-12 | 2017-09-26 | 한국타이어 주식회사 | Tubeless Tire with Reinforced Bead Part |
| CN110001308A (en) * | 2017-12-22 | 2019-07-12 | 东洋橡胶工业株式会社 | Pneumatic tire |
| CN110014790A (en) * | 2017-12-15 | 2019-07-16 | 固特异轮胎和橡胶公司 | Pneumatic tire with solid casing ply ending structure |
| CN211567555U (en) * | 2019-11-14 | 2020-09-25 | 宁夏神州轮胎有限公司 | Bead part for improving bearing performance of tubeless tire |
-
2019
- 2019-11-14 CN CN201911114923.9A patent/CN110936771B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05178039A (en) * | 1992-01-08 | 1993-07-20 | Bridgestone Corp | Pneumatic radial tire for heavy load |
| JP2001010312A (en) * | 1999-06-29 | 2001-01-16 | Sumitomo Rubber Ind Ltd | Tubeless tire |
| JP2001105810A (en) * | 1999-10-07 | 2001-04-17 | Bridgestone Corp | Pneumatic tire |
| KR20020003023A (en) * | 2000-06-30 | 2002-01-10 | 조충환 | Heavy duty radial tire having improved bead durability |
| KR101781947B1 (en) * | 2016-04-12 | 2017-09-26 | 한국타이어 주식회사 | Tubeless Tire with Reinforced Bead Part |
| CN110014790A (en) * | 2017-12-15 | 2019-07-16 | 固特异轮胎和橡胶公司 | Pneumatic tire with solid casing ply ending structure |
| CN110001308A (en) * | 2017-12-22 | 2019-07-12 | 东洋橡胶工业株式会社 | Pneumatic tire |
| CN211567555U (en) * | 2019-11-14 | 2020-09-25 | 宁夏神州轮胎有限公司 | Bead part for improving bearing performance of tubeless tire |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110936771B (en) | 2024-12-17 |
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