CN110182004A - Carry on tire in winter of multilayer three-dimensional steel sheet structure - Google Patents
Carry on tire in winter of multilayer three-dimensional steel sheet structure Download PDFInfo
- Publication number
- CN110182004A CN110182004A CN201910611811.8A CN201910611811A CN110182004A CN 110182004 A CN110182004 A CN 110182004A CN 201910611811 A CN201910611811 A CN 201910611811A CN 110182004 A CN110182004 A CN 110182004A
- Authority
- CN
- China
- Prior art keywords
- tire
- longitudinal groove
- groove
- winter
- steel sheet
- 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.)
- Pending
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 21
- 239000010959 steel Substances 0.000 title claims abstract description 21
- 239000000203 mixture Substances 0.000 claims description 12
- 239000011324 bead Substances 0.000 claims description 6
- 230000002787 reinforcement Effects 0.000 claims description 5
- 230000002093 peripheral effect Effects 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 9
- 230000002708 enhancing effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 239000013598 vector Substances 0.000 description 1
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
- B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
- B60C11/03—Tread patterns
- B60C11/12—Tread patterns characterised by the use of narrow slits or incisions, e.g. sipes
- B60C11/1204—Tread patterns characterised by the use of narrow slits or incisions, e.g. sipes with special shape of the sipe
-
- 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
- B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
- B60C11/03—Tread patterns
- B60C11/12—Tread patterns characterised by the use of narrow slits or incisions, e.g. sipes
- B60C11/1236—Tread patterns characterised by the use of narrow slits or incisions, e.g. sipes with special arrangements in the tread pattern
-
- 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
- B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
- B60C11/03—Tread patterns
- B60C2011/0337—Tread patterns characterised by particular design features of the pattern
- B60C2011/0339—Grooves
- B60C2011/0341—Circumferential grooves
-
- 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
- B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
- B60C11/03—Tread patterns
- B60C2011/0337—Tread patterns characterised by particular design features of the pattern
- B60C2011/0339—Grooves
- B60C2011/0358—Lateral grooves, i.e. having an angle of 45 to 90 degees to the equatorial plane
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Tires In General (AREA)
Abstract
The invention discloses a winter tire carrying a multi-layer three-dimensional steel sheet structure, in particular to a tire which is provided with a main tread layer, an auxiliary tread layer, a bottom tread layer and a 'water drop' type 3D three-dimensional profile structure narrow groove on a radial section, and solves the problem of tail swing of the tire caused by the swing of tread sub blocks. The tire tread is further provided with a tire tread pattern, the tire tread pattern comprises a plurality of longitudinal grooves and a plurality of transverse grooves, the longitudinal grooves and the transverse grooves cut the tire tread into a plurality of pattern blocks, the longitudinal grooves are distributed along the circumferential direction of the tire, the longitudinal grooves comprise first longitudinal grooves and second longitudinal grooves, and the transverse grooves are distributed on the left side and the right side of the first longitudinal grooves and the second longitudinal grooves and are distributed in a herringbone mode and comprise first transverse grooves and second transverse grooves.
Description
Technical field
The present invention relates to tire art, specifically a kind of Tire used in winter for carrying multilayer stereo steel sheet structure.
Background technique
Snow tire refer to compared with general tire in order to be further improved snow in winter or ice-patch surface on
The tire of braking ability and handling.
In snow tire typical structure construction, based on usually one blocky tread contour shape, by pattern block
It uses multiple notch to reduce rigidity, be lifted at accumulated snow or freeze the tractive force on road surface.The presence of these notch is snowfield
Tire is clearly distinguishable from one in the feature the most significant of traditional summer tires.
In existing tire, the rigidity that the presence of notch can reduce block can be improved snow traction, but in vehicle
It is more to divide the sub-block swing formed in driving process by notch, becomes to have on general wet road surface or dry pavement and make
Dynamic performance or the defect of handling decline.
Summary of the invention
The shortcoming in the prior art being previously mentioned in technology based on the above background, the present invention provides one kind to take thus
Carry the Tire used in winter of multilayer stereo steel sheet structure.
The present invention overcomes the above technical problem by using following technical solution, specifically:
A kind of Tire used in winter carrying multilayer stereo steel sheet structure, carcass, crown enhancing including forming tire body
Part, the sidewall for extending radially outwardly to from tyre bead crown, is taken across crown at two tyre beads for securing the tire on wheel rim
The tyre surface that reinforcement is circumferentially covered in the rubber layer that axial width extends is additionally provided with tread contour, tyre surface flower on the tyre surface
Line includes multiple longitudinal grooves and multiple lateral trench, and tyre surface is cut into multiple pattern blocks by longitudinal groove and lateral trench, is indulged
Circumferentially distributed along tire to groove, longitudinal groove includes first longitudinal direction groove and second longitudinal direction groove, and lateral trench is distributed in
At left and right sides of one longitudinal groove and second longitudinal direction groove, arrange in " herringbone " type, including the first lateral trench, the second lateral ditch
Slot.
As a further solution of the present invention: the tyre surface includes main tread ply, subtread layer and bottom on radial section
Portion's tread ply.
As further scheme of the invention: the main tread ply is first of shore hardness less than 60 under sulfided state
Rubber composition is made, and thickness setting value is between 0.1mm to 15mm.
As further scheme of the invention: the subtread layer is that shore hardness is more than or equal to the first rubber composition
The second rubber composition it is made, thickness setting value is between 0.1mm to 15mm.
As further scheme of the invention: the bottom tread ply is by having sticking third rubber composition institute
System, thickness setting value is between 0.1mm to 15mm.
As further scheme of the invention: the longitudinal groove further includes the first " Z " font longitudinal groove, second
" Z " font longitudinal groove, the first " V " font longitudinal groove, the second " V " font longitudinal groove, third longitudinal groove and the 4th are vertical
To groove.
As the present invention further scheme: the first " Z " font longitudinal groove, the second " Z " font longitudinal groove,
First " V " font longitudinal groove, the second " V " font longitudinal groove, third longitudinal groove and the 4th longitudinal groove on tire with
Intermittent circumferential direction formal distribution.
As further scheme of the invention: the pattern block includes the first pattern block at tire top, the first flower
Multiple narrower grooves are provided on line block, narrower groove in the peripheral surface of the first pattern block, alternately with longitudinal groove and
The furrow bank of lateral trench contacts.
As the present invention further scheme: between the corresponding trough of the narrower groove of adjacent two or wave crest
Dislocation distance in 0mm between 5mm, the radial depth height difference of two adjacent narrower grooves on same first pattern block
Between 0.1mm to 20mm, the furrow bank distance of narrower groove to longitudinal groove and lateral trench is between 0.1mm to 20mm.
As further scheme of the invention: the narrower groove is in drops.
After using the above structure, the present invention compared to the prior art, has following advantages: maintaining tire by main tread ply
Ice-snow field performance, by subtread layer promoted tire radial direction rigidity, by bottom tyre surface prevent subtread layer and crown increasing
Strong part separation；The three-dimensional profile of the 3D of " water droplet " type constructs narrower groove in the case where identical radial dimension, provides than straight
The bigger linear extension of cable architecture, thus provide on the wet road surface of accumulated snow or mud it is bigger it is higher grasp edge, change
It is kind swung as tyre surface sub-block caused by tire wag the tail problem.
Detailed description of the invention
Fig. 1 is the main view for carrying the Tire used in winter of multilayer stereo steel sheet structure.
Fig. 2 is the enlarged plan view of pattern block in the Tire used in winter for carry multilayer stereo steel sheet structure.
Fig. 3 is the three-dimensional cutaway view of pattern block in the Tire used in winter for carry multilayer stereo steel sheet structure.
In figure: 1- longitudinal groove；2- lateral trench；The narrower groove of 3-；The first pattern block of 4-；11- first longitudinal direction groove；
12- second longitudinal direction groove；13- first " Z " font longitudinal groove；14- second " Z " font longitudinal groove；15- first " V " font
Longitudinal groove；16- second " V " font longitudinal groove；17- third longitudinal groove；The 4th longitudinal groove of 18-；The lateral ditch of 21- first
Slot；The second lateral trench of 22-.
Specific embodiment
To facilitate the understanding of the present invention, a more comprehensive description of the invention is given in the following sections with reference to the relevant attached drawings.In attached drawing
Give better embodiment of the invention.But the present invention can be realized with many different forms, however it is not limited to herein
Described embodiment.On the contrary, the purpose of providing these embodiments is that making to understand more the disclosure
Add thorough and comprehensive.
In addition, the element in the present invention referred to as " is fixed on " or " being set to " another element, it can be directly another
On one element or there may also be elements placed in the middle.When an element is considered as " connection " another element, it can be with
It is directly to another element or may be simultaneously present centering elements.Term as used herein " vertically ", " level
", "left", "right" and similar statement for illustrative purposes only, be not meant to be the only embodiment.
When using term " radial direction ", statement is related to the radial direction of tire, if closer to the rotation axis of tire
When, then it is expressed as " radially inner side "；When using term " circumferential direction ", it is expressed as tire rotating direction.
Embodiment 1
Please refer to Fig. 1~3, in the embodiment of the present invention, a kind of Tire used in winter carrying multilayer stereo steel sheet structure, including
Formed the carcass of tire body, crown reinforcement, two tyre beads for securing the tire on wheel rim, from tyre bead radially outward
It extends to the sidewall of crown, be taken across the tyre surface that crown reinforcement is circumferentially covered in the rubber layer that axial width extends；
Specifically, the tyre surface includes main tread ply, subtread layer and the bottom tread ply on radial section, main tyre surface
Layer by under sulfided state first rubber composition of the shore hardness less than 60 it is made, thickness setting value is in 0.1mm to 15mm
Between, to maintain the ice-snow field performance of tire；Subtread layer is more than or equal to the second of the first rubber composition by shore hardness
Rubber composition is made, and thickness setting value is between 0.1mm to 15mm, for promoting the rigidity of tire radial direction；Bottom tyre surface
Layer is made by having sticking third rubber composition, for preventing subtread layer from separating with crown reinforcement, the rubber thickness
Setting value is spent between 0.1mm to 15mm.
Further, tread contour is additionally provided on the tyre surface, tread contour includes multiple longitudinal grooves 1 and multiple cross
To groove 2, tyre surface is cut into multiple pattern blocks by longitudinal groove 1 and lateral trench 2, and further, longitudinal groove 1 is along tire week
To distribution, longitudinal groove 1 includes first longitudinal direction groove 11 and second longitudinal direction groove 12, and lateral trench 2 is distributed in first longitudinal direction ditch
12 left and right sides of slot 11 and second longitudinal direction groove, arranges, including the first lateral trench 21 in " herringbone " type, the second lateral trench
22。
Preferably, the longitudinal groove 1 further includes first " Z " font longitudinal groove 13, second " Z " font longitudinal groove
14, first the 15, second " V " font of " V " font longitudinal groove longitudinal groove 16, third longitudinal groove 17 and the 4th longitudinal groove
18, the first 15, second " V " of " Z " font longitudinal groove the 13, second " Z " font longitudinal groove the 14, first " V " font longitudinal groove
Font longitudinal groove 16, third longitudinal groove 17 and the 4th longitudinal groove 18 on tire with intermittent circumferential formal distribution, from
And further divide pattern block, staggered longitudinal groove 1 and lateral trench 2 impart tire appearance bigger on snowy road surface
Snowfall.
Still further, the pattern block includes the first pattern block 4 at tire top, it is provided on the first pattern block 4
Multiple narrower grooves 3, narrower groove 3 is in the peripheral surface of the first pattern block 4, alternating and longitudinal groove 1 and lateral trench 2
Furrow bank contact, it should be noted that the dislocation distance between the corresponding trough of narrower groove 3 of adjacent two or wave crest exists
0mm is between 5mm, and the radial depth d height difference of adjacent two narrower grooves 3 is arrived in 0.1mm on same first pattern block 4
Between 20mm, the furrow bank distance of narrower groove 3 to longitudinal groove 1 and lateral trench 2 passes through alternating between 0.1mm to 20mm
The narrower groove 3 of contact and staged depth design, enhancing tire tread rigidity.
In order to guarantee during tire running, pass through the three-dimensional modeling portion between the sizing material between narrower 3 two sidewalls of groove
Dividing makes mutually to support between each fritter, and the narrower groove 3 is in drops, through the three-dimensional steel disc in drops on mold
Vulcanize, narrower groove 3 has the extend linearly amount bigger than linear structure, and energy in the case where identical radial dimension
Better against the shear stress of tire circumferential direction, to improve tire braking ability and handling.
The narrower groove comparison of tire and linear structure in the prior art in the embodiment of the present invention carries out real steering vectors,
The braking ability and handling of the tire under different road surfaces are tested, correlation data is as follows:
| Project | It brakes dryly | It manipulates dryly | Snowfield brake | Snowfield manipulation | Brake to ice | Manipulate to ice |
| Common snowfield tire | 100 | 100 | 100 | 100 | 100 | 100 |
| Tire of the invention | 103 | 104 | 103 | 102 | 104 | 105 |
Only highly preferred embodiment of the present invention is described above, but is not to be construed as limiting the scope of the invention.This
Invention is not limited only to above embodiments, and specific structure is allowed to vary.In every case in the protection model of independent claims of the present invention
Interior made various change is enclosed to be within the scope of the invention.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term " and or " used herein includes one or more
Any and all combinations of relevant listed item.
Claims (10)
1. a kind of Tire used in winter for carrying multilayer stereo steel sheet structure, including formed the carcass of tire body, crown reinforcement,
Two tyre beads for securing the tire on wheel rim, the sidewall that crown is extended radially outwardly to from tyre bead are taken across crown increasing
The tyre surface that strong part is circumferentially covered in the rubber layer that axial width extends, which is characterized in that tyre surface flower is additionally provided on the tyre surface
Line, tread contour include multiple longitudinal grooves (1) and multiple lateral trench (2), and longitudinal groove (1) and lateral trench (2) are by tire
Face is cut into multiple pattern blocks, and longitudinal groove (1) is circumferentially distributed along tire, and longitudinal groove (1) includes first longitudinal direction groove (11)
With second longitudinal direction groove (12), lateral trench (2) is distributed in first longitudinal direction groove (11) and second longitudinal direction groove (12) left and right two
Side is arranged in " herringbone " type, including the first lateral trench (21), the second lateral trench (22).
2. a kind of Tire used in winter for carrying multilayer stereo steel sheet structure according to claim 1, which is characterized in that described
Tyre surface includes main tread ply, subtread layer and bottom tread ply on radial section.
3. a kind of Tire used in winter for carrying multilayer stereo steel sheet structure according to claim 2, which is characterized in that described
Main tread ply is that first rubber composition of the shore hardness less than 60 is made under sulfided state, and thickness setting value is arrived in 0.1mm
Between 15mm.
4. a kind of Tire used in winter for carrying multilayer stereo steel sheet structure according to claim 2, which is characterized in that described
Subtread layer is that shore hardness is made more than or equal to the second rubber composition of the first rubber composition, and thickness setting value exists
Between 0.1mm to 15mm.
5. a kind of Tire used in winter for carrying multilayer stereo steel sheet structure according to claim 2, which is characterized in that described
Bottom tread ply is made by having sticking third rubber composition, and thickness setting value is between 0.1mm to 15mm.
6. a kind of Tire used in winter for carrying multilayer stereo steel sheet structure according to claim 1, which is characterized in that described
Longitudinal groove (1) further includes the first " Z " font longitudinal groove (13), the second " Z " font longitudinal groove (14), first " V " font
Longitudinal groove (15), the second " V " font longitudinal groove (16), third longitudinal groove (17) and the 4th longitudinal groove (18).
7. a kind of Tire used in winter for carrying multilayer stereo steel sheet structure according to claim 6, which is characterized in that described
First " Z " font longitudinal groove (13), the second " Z " font longitudinal groove (14), the first " V " font longitudinal groove (15), second
" V " font longitudinal groove (16), third longitudinal groove (17) and the 4th longitudinal groove (18) are on tire with intermittent circumferential shape
Formula distribution.
8. a kind of Tire used in winter for carrying multilayer stereo steel sheet structure according to claim 1, which is characterized in that described
Pattern block includes the first pattern block (4) at tire top, is provided with multiple narrower grooves (3) on the first pattern block (4), narrower
Groove (3) is in the peripheral surface of the first pattern block (4), and alternately the furrow bank with longitudinal groove (1) and lateral trench (2) connects
Touching.
9. a kind of Tire used in winter for carrying multilayer stereo steel sheet structure according to claim 8, which is characterized in that adjacent
The corresponding trough of two narrower grooves (3) or wave crest between dislocation distance in 0mm between 5mm, same first
The radial depth height difference of adjacent two narrower grooves (3) is between 0.1mm to 20mm on pattern block (4), narrower groove
(3) to the furrow bank of longitudinal groove (1) and lateral trench (2) distance between 0.1mm to 20mm.
10. a kind of Tire used in winter for carrying multilayer stereo steel sheet structure according to claim 8, which is characterized in that institute
Narrower groove (3) are stated in drops.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910611811.8A CN110182004A (en) | 2019-07-08 | 2019-07-08 | Carry on tire in winter of multilayer three-dimensional steel sheet structure |
| PCT/CN2019/126115 WO2021004012A1 (en) | 2019-07-08 | 2019-12-17 | Winter tire equipped with multilayer stereoscopic steel sheet structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910611811.8A CN110182004A (en) | 2019-07-08 | 2019-07-08 | Carry on tire in winter of multilayer three-dimensional steel sheet structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110182004A true CN110182004A (en) | 2019-08-30 |
Family
ID=67725314
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910611811.8A Pending CN110182004A (en) | 2019-07-08 | 2019-07-08 | Carry on tire in winter of multilayer three-dimensional steel sheet structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110182004A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021004012A1 (en) * | 2019-07-08 | 2021-01-14 | 山东玲珑轮胎股份有限公司 | Winter tire equipped with multilayer stereoscopic steel sheet structure |
| WO2021164442A1 (en) * | 2020-02-17 | 2021-08-26 | 山东玲珑轮胎股份有限公司 | Multi-nail hole studded tire |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6435237B1 (en) * | 2000-06-14 | 2002-08-20 | The Goodyear Tire & Rubber Company | Pneumatic tire having generally rounded footprint shape |
| CN103158443A (en) * | 2011-12-19 | 2013-06-19 | 青岛黄海橡胶股份有限公司 | Car radial tire tread pattern |
| CN104842717A (en) * | 2014-02-18 | 2015-08-19 | 住友橡胶工业株式会社 | Pneumatic tire |
| CN105555550A (en) * | 2013-09-17 | 2016-05-04 | 横滨橡胶株式会社 | Pneumatic tire |
| CN106279797A (en) * | 2016-07-18 | 2017-01-04 | 郑兴荣 | A kind of Low-rolling-resistantire tire tread rubber composition and the tire of manufacture thereof |
| CN108177485A (en) * | 2018-02-09 | 2018-06-19 | 建大橡胶（中国）有限公司 | A kind of snow tire |
| CN109641486A (en) * | 2016-09-02 | 2019-04-16 | 横滨橡胶株式会社 | Pneumatic tire |
| CN210132955U (en) * | 2019-07-08 | 2020-03-10 | 山东玲珑轮胎股份有限公司 | Carry on tire in winter of multilayer three-dimensional steel sheet structure |
-
2019
- 2019-07-08 CN CN201910611811.8A patent/CN110182004A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6435237B1 (en) * | 2000-06-14 | 2002-08-20 | The Goodyear Tire & Rubber Company | Pneumatic tire having generally rounded footprint shape |
| CN103158443A (en) * | 2011-12-19 | 2013-06-19 | 青岛黄海橡胶股份有限公司 | Car radial tire tread pattern |
| CN105555550A (en) * | 2013-09-17 | 2016-05-04 | 横滨橡胶株式会社 | Pneumatic tire |
| CN104842717A (en) * | 2014-02-18 | 2015-08-19 | 住友橡胶工业株式会社 | Pneumatic tire |
| CN106279797A (en) * | 2016-07-18 | 2017-01-04 | 郑兴荣 | A kind of Low-rolling-resistantire tire tread rubber composition and the tire of manufacture thereof |
| CN109641486A (en) * | 2016-09-02 | 2019-04-16 | 横滨橡胶株式会社 | Pneumatic tire |
| CN108177485A (en) * | 2018-02-09 | 2018-06-19 | 建大橡胶（中国）有限公司 | A kind of snow tire |
| CN210132955U (en) * | 2019-07-08 | 2020-03-10 | 山东玲珑轮胎股份有限公司 | Carry on tire in winter of multilayer three-dimensional steel sheet structure |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021004012A1 (en) * | 2019-07-08 | 2021-01-14 | 山东玲珑轮胎股份有限公司 | Winter tire equipped with multilayer stereoscopic steel sheet structure |
| WO2021164442A1 (en) * | 2020-02-17 | 2021-08-26 | 山东玲珑轮胎股份有限公司 | Multi-nail hole studded tire |
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