CN116198258A - All-steel radial tire adopting novel four-layer belt layer structure - Google Patents
All-steel radial tire adopting novel four-layer belt layer structure Download PDFInfo
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- CN116198258A CN116198258A CN202211727792.3A CN202211727792A CN116198258A CN 116198258 A CN116198258 A CN 116198258A CN 202211727792 A CN202211727792 A CN 202211727792A CN 116198258 A CN116198258 A CN 116198258A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 20
- 239000010959 steel Substances 0.000 title claims abstract description 20
- 238000004804 winding Methods 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 abstract description 8
- 230000020169 heat generation Effects 0.000 abstract description 3
- 238000004088 simulation Methods 0.000 description 10
- 102100032884 Neutral amino acid transporter A Human genes 0.000 description 2
- 101710160582 Neutral amino acid transporter A Proteins 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 231100000817 safety factor Toxicity 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000003490 calendering Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010618 wire wrap Methods 0.000 description 1
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Classifications
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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
- B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
- B60C9/18—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/86—Optimisation of rolling resistance, e.g. weight reduction
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Tires In General (AREA)
Abstract
The invention discloses an all-steel radial tire adopting a novel four-layer belt layer structure, which comprises a tire body cord layer and a belt layer component arranged above the tire body cord layer, wherein a tread component is arranged above the belt layer component, the direction of a single cord in the tire body cord layer is the axial direction of the tire, and the belt layer component comprises a first belt layer, a second belt layer, a third belt layer and a fourth belt layer; according to the all-steel radial tire adopting the novel four-layer belt structure, the stress concentration at the tire shoulder can be reduced, the heat generation of the shoulder can be reduced, the durability of the tire can be effectively improved, the rolling resistance is reduced to a certain extent, and the weight of the tire is reduced simultaneously by changing the angles of cords in the first belt layer, the second belt layer, the third belt layer and the fourth belt layer and the difference level between the adjacent two belt layers.
Description
Technical Field
The invention relates to the field of tire manufacturing, in particular to an all-steel radial tire adopting a novel four-layer belt layer structure.
Background
When the truck and passenger car tire runs at high load and high speed, the framework material is easy to deform under stress, so that the tire is delaminated and broken among steel wires due to collision and perforation, and the safety of the tire is reduced. The traditional zero-degree belt structure has good tightening effect, and can effectively ensure the strength of the tire in a rolling state. However, after the tire is inflated and stressed, the steel cord of the belt layer with the zero-degree structure is subjected to different degrees of tensile force in the circumferential direction of the tire, and the belt layers are easily damaged due to the shearing force. Therefore, the pressure bearing and deformation capacity of the belt layer area is improved, and the method has great significance for the stability, durability and safety of the tire.
The zero-degree belt structure has the main functions of tightening the belt end points with a larger movable range, properly increasing the zero-degree width and simultaneously tightening the middle area of the belt, thereby improving the rigidity of the central part of the tread, greatly improving the safety multiple of the tire belt and greatly guaranteeing the safety performance of the tire.
Disclosure of Invention
In order to solve the technical problems, the invention provides an all-steel radial tire adopting a novel four-layer belt layer structure.
The specific scheme is as follows:
the all-steel radial tire with the novel four-layer belt layer structure comprises a tire body cord layer and a belt layer component arranged above the tire body cord layer, wherein a tread component is arranged above the belt layer component, the direction of a single cord in the tire body cord layer is the axial direction of the tire, and the belt layer component comprises a first belt layer, a second belt layer, a third belt layer and a fourth belt layer;
the first belt layer is attached above the tire body cords, the included angle between the direction of a single cord in the first belt layer and the circumferential direction of the tire is 20-30 degrees, and the included angle direction is left;
the second belt layer is attached to the upper portion of the first belt layer, an included angle between the direction of a single cord in the second belt layer and the circumferential direction of the tire is 10 degrees to 30 degrees, and the included angle direction is the right direction;
the third belt layer is formed by spirally winding at least two cords along the circumferential direction of the tire, and the surfaces of the cords are coated with a covering rubber;
the fourth belt layer is attached to the upper portion of the third belt layer, an included angle between the direction of a single cord in the fourth belt layer and the circumferential direction of the tire is 40 degrees to 60 degrees, the included angle direction is left, and the tread component is arranged above the fourth belt layer.
The center in the first belt layer width direction coincides with the center in the carcass cord layer width direction, and the first belt layer width L1 is 85% to 90% of the width of the tire running surface a.
The center in the width direction of the second belt layer coincides with the center in the width direction of the carcass cord layer, and the difference W1 between the widths L2 and L1 of the second belt layer takes a value of 7mm to 10mm.
The center in the width direction of the third belt layer coincides with the center in the width direction of the carcass cord layer, and the difference level W2 of the widths L3 and L2 of the third belt layer takes a value of 7mm to 10mm.
The center in the width direction of the fourth belt layer coincides with the center in the width direction of the carcass cord layer, and the fourth belt layer
Is half the width L4 of L2.
The cords in the third belt layer are wound from both sides to the middle, the middle forming a circumferential gap W0, the width of W0 being smaller than the width of a single cord.
According to the all-steel radial tire adopting the novel four-layer belt structure, the stress concentration at the tire shoulder can be reduced, the heat generation of the shoulder can be reduced, the durability of the tire can be effectively improved, the rolling resistance is reduced to a certain extent, and the weight of the tire is reduced simultaneously by changing the angles of cords in the first belt layer, the second belt layer, the third belt layer and the fourth belt layer and the difference level between the adjacent two belt layers.
Drawings
FIG. 1 is a cross-sectional view of the present invention;
FIG. 2 is a belt structure schematic;
FIG. 3 is a belt development schematic;
FIG. 4 is a schematic diagram of a comparison of first and second ground marks;
FIG. 5 is a stress-strain comparison of scheme one versus scheme two;
FIG. 6 is a schematic illustration of a third belt layer single cord wrap.
In the figure: carcass ply 1, first belt layer 2, second belt layer 3, third belt layer 4, fourth belt layer 5, tread component 6.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the present invention. It will be apparent to those skilled in the art that the described embodiments are only a part, but not all, of the implementations of the invention, and that all other embodiments, based on which those skilled in the art will come to lie within the scope of the invention without making any inventive effort.
As shown in fig. 1-6, the invention discloses an all-steel radial tire adopting a novel four-layer belt structure, which comprises a carcass cord layer 1 and a belt layer component arranged above the carcass cord layer 1, wherein a tread part 6 is arranged above the belt layer component, the direction of a single cord in the carcass cord layer 1 is the axial direction of the tire, and the belt layer component comprises a first belt layer 2, a second belt layer 3, a third belt layer 4 and a fourth belt layer 5; the centers in the width direction of the second belt layer, the third belt layer, and the fourth belt layer are each coincident with the center in the width direction of the carcass cord layer,
the first belt layer 2 is attached above the tire body cords, the included angle between the direction of a single cord in the first belt layer 2 and the circumferential direction of the tire is 20-30 degrees, and the included angle direction is left; the first belt layer 2 adopts a high-strength cord, and adopts a 3+8×0.33HT cord, so that the tire has high strength and can be provided with strength.
The second belt layer 3 is attached above the first belt layer 2, the included angle between the direction of a single cord in the second belt layer 3 and the circumferential direction of the tire is 10 degrees to 30 degrees, and the included angle direction is the right direction; the second belt layer 3 uses a high-strength cord, and uses a 3+8×0.33HT cord, which has a high strength and can provide strength to the tire. The direction of the included angle here is directed to the left and to the right, meaning that the direction of the individual cords in the first belt layer 2 is opposite to the direction of the individual cords in the second belt layer 3.
The third belt layer 4 is composed of at least two cords spirally wound in the tire circumferential direction. And the third belt layer 4 is made of 3×7×0.20HE cords with a coating on the cord surface for fixation.
The fourth belt layer 5 is attached over the third belt layer 4, the angle between the direction of the single cord in the fourth belt layer 5 and the tire circumferential direction is 40 ° to 60 °, the angle direction is the left direction, and the tread member 6 is provided over the fourth belt layer 5. The fourth belt layer 5 employs 5×0.30HI cords. The direction of the included angle here being directed to the left and to the right means that the direction of the individual cords in the fourth belt layer 5 is opposite to the direction of the individual cords in the second belt layer 3
The first belt layer 2, the second belt layer 3 and the fourth belt layer 5 are all made of wirecord fabric through calendaring and cutting.
The first belt layer 2 has a width L1 of 85% to 90% of the tire running surface width a. The tire running surface width a refers to the tire tread width (see fig. 1 of the specification).
The difference pole W1 of the widths L2 and L1 of the second belt layer 3 takes a value of 7mm to 10mm.
The difference pole W2 of the widths L3 and L2 of the third belt layer 4 takes a value of 7mm to 10mm.
The width L4 of the fourth belt layer 5 is half of L2.
The first belt layer 2 is wider than the second belt layer 3, and can provide good grounding performance to the tire. The differential is configured to avoid shearing interactions of belt ends during tire formation by impact from the ground, thereby reducing tire heat generation.
The cords in the third belt layer 4 are wound from two sides to the middle, the middle forms a circumferential gap W0, the width of the W0 is smaller than that of a single cord, the minimum distance is 0 (namely the contact position of the two side cords) in an ideal state, the two sides are wound close to the middle, and the winding efficiency is higher.
Simulation result analysis:
the belt structure in the application is compared with the SATT structure used for double endurance in the prior art for simulation analysis, the belt structure in the application is defined as a scheme I, and the SATT structure is defined as a scheme II.
The simulation uses a cord: the two schemes adopt identical cord structures and cord densities (the cords are selected for simulation analysis only).
third belt layer 4: 3X 7X 0.20HE, about 30-60 wires per decimeter;
and (3) a carcass: 0.22+6+11×0.205ST, about 30 to 60 wires per decimeter;
steel wire wrapping cloth: 3X 7X 0.20HE, about 30-60 wires per decimeter;
fourth belt layer 5: 5X 0.30HI, about 30-60 steel wires per decimeter;
the simulation adopts the following conditions: rim: 9.00 load: 3550kg, rolling resistance of 85% of standard load, 3017.5kg, air pressure: 930kpa.
Simulation results: as shown in FIG. 4, FIG. 4 shows simulated grounding marks of two schemes, the shapes of the two schemes are not obviously different, namely, the original grounding performance of the belt structure is not reduced, meanwhile, the maximum point of grounding stress of the scheme one is in a small shoulder area, the stress of the center of the crown is more uniform compared with that of the scheme two, and the uniform abrasion performance is improved to a certain extent.
As shown in fig. 5, fig. 5 is a comparison of the stress-strain simulation results for the two schemes, taken as 100 for the existing belt structure. From the simulation result, the maximum strain positions of the two schemes are respectively positioned between the endpoints of the first belt layer 2 and the second belt layer 3; the maximum strain of the solution is 98 and the second solution is 100, so the first solution (i.e., the belt structure of the present application) is low in strain, which is generally used to characterize the crown durability of the tire, i.e., the belt structure of the present application is advantageous for improving the crown durability of the tire.
As shown in table 1, the safety factor results for both schemes are shown. From the results, the safety factors of the third belt layer 4 and the fourth belt layer 5 of the first scheme are greatly improved, and the first belt layer 2 and the second belt layer 3 are basically leveled.
As shown in table 2, the rolling resistance results for the two schemes are compared and the result for the existing belt structure is 100. The results show that the rolling resistance of the tire of the first scheme (namely the belt structure of the application) is reduced compared with that of the second scheme, namely the scheme is beneficial to the rolling resistance of the tire, and the vehicle fuel consumption can be reduced.
As shown in table 3, the temperature field results for both schemes were 100 for the existing belt structure. The results show that scheme one (i.e., the belt structure of the present application) has a reduced temperature in the crown center and shoulder, i.e., the tire heating is reduced, and is therefore also advantageous for tire endurance.
According to the all-steel radial tire adopting the novel four-layer belt structure, through simulation comparison of the structure and the existing belt structure, simulation results show that the durability, rolling resistance, belt safety multiple and other performances of the tire are improved to a certain extent, and the production process of the tire and the weight of the tire are not greatly influenced.
The technical means disclosed by the scheme of the invention is not limited to the technical means disclosed by the embodiment, and also comprises the technical scheme formed by any combination of the technical features. It should be noted that modifications and adaptations to the invention may occur to one skilled in the art without departing from the principles of the present invention and are intended to be within the scope of the present invention.
Claims (6)
1. The novel all-steel radial tire with the four-layer belt layer structure comprises a tire body cord layer and a belt layer component arranged above the tire body cord layer, wherein a tread component is arranged above the belt layer component, and the direction of a single cord in the tire body cord layer is the axial direction of the tire; the first belt layer is attached above the tire body cords, the included angle between the direction of a single cord in the first belt layer and the circumferential direction of the tire is 20-30 degrees, and the included angle direction is left; the second belt layer is attached to the upper portion of the first belt layer, an included angle between the direction of a single cord in the second belt layer and the circumferential direction of the tire is 10 degrees to 30 degrees, and the included angle direction is the right direction; the third belt layer is formed by spirally winding at least two cords along the circumferential direction of the tire, and the surfaces of the cords are coated with a covering rubber; the fourth belt layer is attached to the upper portion of the third belt layer, an included angle between the direction of a single cord in the fourth belt layer and the circumferential direction of the tire is 40 degrees to 60 degrees, the included angle direction is left, and the tread component is arranged above the fourth belt layer.
2. An all-steel radial tire adopting a novel four-ply belt structure according to claim 1, wherein the center in the first belt layer width direction coincides with the center in the carcass ply width direction, and the first belt layer width L1 is 85% to 90% of the tire running surface a width.
3. An all-steel radial tire adopting a novel four-layer belt structure according to claim 2, wherein the center in the width direction of the second belt layer coincides with the center in the width direction of the carcass ply, and the difference W1 between the widths L2 and L1 of the second belt layer takes a value of 7mm to 10mm.
4. An all-steel radial tire adopting a novel four-layer belt structure as claimed in claim 3, wherein the center in the width direction of the third belt layer coincides with the center in the width direction of the carcass ply, and the difference level W2 of the widths L3 and L2 of the third belt layer takes a value of 7mm to 10mm.
5. An all-steel radial tire adopting a novel four-layer belt structure according to claim 4, wherein the center in the width direction of the fourth belt layer coincides with the center in the width direction of the carcass cord layer, and the width L4 of the fourth belt layer is half of L2.
6. An all-steel radial tire adopting a novel four-ply belt structure as claimed in claim 5, wherein the cords in the third belt layer are wound from two sides to the middle, and the width of the circumferential gap W0 is smaller than that of a single cord.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211727792.3A CN116198258A (en) | 2022-12-31 | 2022-12-31 | All-steel radial tire adopting novel four-layer belt layer structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211727792.3A CN116198258A (en) | 2022-12-31 | 2022-12-31 | All-steel radial tire adopting novel four-layer belt layer structure |
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| Publication Number | Publication Date |
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| CN116198258A true CN116198258A (en) | 2023-06-02 |
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| CN202211727792.3A Pending CN116198258A (en) | 2022-12-31 | 2022-12-31 | All-steel radial tire adopting novel four-layer belt layer structure |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110253279A1 (en) * | 2008-12-22 | 2011-10-20 | Guido Luigi Daghini | Tyre reinforced with steel cords comprising fine filaments |
| DE102010016550A1 (en) * | 2010-04-21 | 2011-10-27 | Continental Reifen Deutschland Gmbh | Vehicle tires |
| US20120241068A1 (en) * | 2009-11-26 | 2012-09-27 | Bridgestone Corporation | Pneumatic tire |
| CN105829131A (en) * | 2013-12-18 | 2016-08-03 | 大陆轮胎德国有限公司 | Pneumatic vehicle tyre |
-
2022
- 2022-12-31 CN CN202211727792.3A patent/CN116198258A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110253279A1 (en) * | 2008-12-22 | 2011-10-20 | Guido Luigi Daghini | Tyre reinforced with steel cords comprising fine filaments |
| US20120241068A1 (en) * | 2009-11-26 | 2012-09-27 | Bridgestone Corporation | Pneumatic tire |
| DE102010016550A1 (en) * | 2010-04-21 | 2011-10-27 | Continental Reifen Deutschland Gmbh | Vehicle tires |
| CN102858557A (en) * | 2010-04-21 | 2013-01-02 | 大陆轮胎德国有限公司 | Pneumatic vehicle tyre |
| CN105829131A (en) * | 2013-12-18 | 2016-08-03 | 大陆轮胎德国有限公司 | Pneumatic vehicle tyre |
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