All-weather adaptive all-steel radial tire

Abstract

The utility model provides an all-weather adaptation type all-steel radial tire which comprises a tire crown and tire shoulders, the tire shoulders are connected to the two sides of the tire crown, a plurality of pattern grooves are formed in the tire crown, each pattern groove comprises a first side wall and a second side wall, the inclination angle of the top of each first side wall is larger than that of the top of each second side wall, and the tire shoulders are connected to the tire shoulders. The tire has the advantages that the stability is high, the road holding force is excellent, the pressure of the crown part is balanced, the abnormal wear disease of the crown center and the shoulder part in the driving process can be effectively prevented, and the service life of the tire is prolonged. And the device can adapt to various working conditions such as highways, ports and urban roads.

Description

Technical Field

[0001] The utility model relates to the technical field of tires, in particular to an all-weather adaptable all-steel radial tire. Background Art

[0002] With the increasing promotion of new energy trucks by the state, the application scenarios of electric trucks have expanded to more industries and fields, such as the cement and coke industries. This requires electric trucks to have higher transportation efficiency and cruising range to meet a wider range of needs. Therefore, this puts newer and higher requirements on the all-steel radial tires used in conjunction with them, especially for the fuel economy, grip and wear resistance of the tires, and the three need to reach a new degree of fit.

[0003] The current all-steel radial tires are usually more suitable for traditional medium- and long-distance high-speed working conditions and medium- and short-distance regional working conditions, and less suitable for special working conditions such as ports, buses, intercity buses, and urban roads, and cannot meet the application scenarios of electric trucks for all-weather use. Summary of the Utility Model

[0004] The purpose of the utility model is to solve the above technical deficiencies and provide an all-weather adaptable all-steel radial tire.

[0005] To this end, the utility model provides an all-weather adaptable all-steel radial tire, including a tread crown and a tread shoulder. The two sides of the tread crown are connected with the tread shoulder. A plurality of tread grooves are arranged on the tread crown. The tread grooves include a first side wall and a second side wall. The inclination angle of the top of the first side wall is greater than the inclination angle of the top of the second side wall. Biting blocks protruding outwards are arranged on both the first side wall and the second side wall, and the lower ends of the first side wall and the second side wall are mutually engaged.

[0006] Preferably, a plurality of tread blocks are arranged on the tread crown. The tread blocks include a first tread block, a second tread block, a third tread block, and a fourth tread block. The tread shoulder includes a left tread shoulder and a right tread shoulder. The left tread shoulder, the first tread block, the second tread block, the third tread block, the fourth tread block, and the right tread shoulder are arranged in sequence.

[0007] Preferably, the widths of the left tread shoulder and the right tread shoulder are equal, the widths of the first tread block and the fourth tread block are equal, and the widths of the second tread block and the third tread block are equal.

[0008] Preferably, the widths of the left tread shoulder and the right tread shoulder are greater than the widths of the first tread block and the fourth tread block, and the widths of the first tread block and the fourth tread block are greater than the widths of the second tread block and the third tread block.

[0009] Preferably, the plurality of tread grooves are arranged in an inclined and staggered manner.

[0010] Preferably, the ratio of the area occupied by the pattern grooves to the area occupied by the pattern blocks is 23.5%.

[0011] The beneficial effects of the present utility model are as follows: The present utility model provides an all-weather adaptable all-steel radial tire, having the following beneficial effects.

[0012] (1) By adopting an asymmetric three-dimensional pattern groove wall design, the longitudinal rigidity of the pattern blocks can be ensured. That is, during the driving process of the tire, the lower ends of the pattern blocks longitudinally engage with each other to achieve the effect of buffering the longitudinal force, so as to reduce the longitudinal front-back height deviation wear of the pattern blocks and make it more widely applicable to various complex road conditions and usage scenarios.

[0013] (2) The tire has high stability and excellent grip, with balanced crown pressure, effectively preventing abnormal wear phenomena at the crown center and shoulders during driving, and being able to adapt to various different usage conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic structural view of the pattern grooves in this embodiment.

[0015] Figure 2 is a schematic structural view of the all-weather adaptable all-steel radial tire in this embodiment.

[0016] Reference numerals in the drawings: 1, pattern grooves; 11, side wall one; 12, side wall two; 2, engaging blocks; 3, pattern blocks; 31, first pattern block; 32, second pattern block; 33, third pattern block; 34, fourth pattern block; 4, left tire shoulder; 5, right tire shoulder. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] The present utility model will be further described below in conjunction with the drawings and specific embodiments to facilitate understanding of the content of the present utility model. The methods used in the present utility model are all conventional methods unless otherwise specified; the raw materials and devices used are all conventional commercially available products unless otherwise specified.

[0018] Embodiment:

[0019] As Figures 1 to 2 shown, the present utility model provides an all-weather adaptable all-steel radial tire, including a tire crown and tire shoulders, the two sides of the tire crown are connected with the tire shoulders, a plurality of pattern grooves 1 are arranged on the tire crown, a deep pattern groove design is adopted in this embodiment, the plurality of pattern grooves 1 are arranged in an inclined and staggered manner, the pattern grooves 1 include a side wall one 11 and a side wall two 12, the inclination angle of the top of the side wall one 11 is greater than the inclination angle of the top of the side wall two 12, engaging blocks 2 protruding outward are arranged on both the side wall one 11 and the side wall two 12, and the lower ends of the side wall one 11 and the side wall two 12 engage with each other.

[0020] The asymmetric three-dimensional pattern groove wall design can ensure the longitudinal rigidity of the tread blocks. That is, during the driving process of the tire, the lower ends of the tread blocks bite longitudinally with each other to achieve the effect of buffering longitudinal forces, so as to reduce the longitudinal front-back height deviation wear of the tread blocks and make it more widely applicable to various complex road conditions and usage scenarios. Compared with ordinary pattern groove walls, the creep of the tread blocks in this design is reduced by 10.3%, and the tread blocks are more stable. At the same time, compared with the ordinary groove wall form, this design increases the wear volume by about 8.2%, which can better ensure the wear and grip performance in the middle and late stages of tire use, maximize the service life of the tire, and the product has a higher cost performance.

[0021] Furthermore, a plurality of tread blocks 3 are provided on the crown. The tread blocks 3 include a first tread block 31, a second tread block 32, a third tread block 33, and a fourth tread block 34. The tire shoulders include a left tire shoulder 4 and a right tire shoulder 5. The left tire shoulder 4, the first tread block 31, the second tread block 32, the third tread block 33, the fourth tread block 34, and the right tire shoulder 5 are arranged in sequence.

[0022] Furthermore, the widths of the left tire shoulder 4 and the right tire shoulder 5 are equal, the widths of the first tread block 31 and the fourth tread block 34 are equal, and the widths of the second tread block 32 and the third tread block 33 are equal.

[0023] Furthermore, the widths of the left tire shoulder 4 and the right tire shoulder 5 are greater than the widths of the first tread block 31 and the fourth tread block 34, and the widths of the first tread block 31 and the fourth tread block 34 are greater than the widths of the second tread block 32 and the third tread block 33.

[0024] The area ratio of the left tire shoulder 4, the first tread block 31, the second tread block 32, the third tread block 33, the fourth tread block 34, and the right tire shoulder 5 is 1:0.89:0.80:0.80:0.89:1, and the pressures are respectively: 4468.7N / 4788.9N / 4802.3N / 4657.3N / 4733.1N / 4365.2N, and the pressures are respectively 0.257Mpa / 0.281Mpa / 0.276Mpa / 0.278Mpa / 0.276Mpa / 0.271Mpa. The pressure distribution of the entire crown is uniform, and the overall performance is the most stable. Under this design, the all-steel radial tire in this embodiment has high stability and excellent grip, the crown pressure is balanced, effectively preventing abnormal wear of the crown center and shoulders during driving, and can adapt to various different usage conditions.

[0025] Further, the proportion of the area occupied by the tread groove 1 to the area occupied by the tread block 3 is 23.5%. The radial stiffness, lateral stiffness, longitudinal stiffness, and torsional stiffness of this design are 959.8 N / mm, 320.5 N / mm, 290.7 N / mm, and 1785.9 N*mm / deg respectively, which is 4% - 8% higher than other solutions, with the best stability and wear resistance, thus increasing the tire's mileage.

[0026] Further, according to GB / T 2977 "Specifications, Dimensions, Inflation Pressure and Load of Truck and Bus Tires", the technical parameters of the all-steel radial tire specifications are as follows: the measuring rim is 9.00; since this product is positioned as an all-weather general-purpose type, the inflated outer diameter adopts the highway type standard (D’ - inflated outer diameter) of 1085 (1068 - 1100) mm, the inflated section width (B’ - inflated section width) is 300 (288 - 312) mm, the load index is 152 / 149, the speed rating is L, the ply rating is 18PR, the standard inflation pressure is 930 kPa, and the maximum load for a single tire is 3550 kg.

[0027] Based on past experience, the expansion of the outer diameter of all-steel radial tires after inflation is relatively small. To better reflect the product's applicability, the outer diameter needs to be designed according to the standard median value. Considering the above, the outer diameter expansion rate of this tire (D’ - inflated outer diameter / D - designed outer diameter) is taken as 1.0027, that is, D is taken as 1086 mm, and the section width expansion rate (B’ - inflated section width / B - designed section width) is taken as 1.017, that is, B is taken as 298 mm.

[0028] For tubeless tires, it is necessary to ensure that the bead is tightly combined with the rim to ensure the airtightness of the tire. The bead part generally adopts an interference fit design. At the same time, it is necessary to consider minimizing the damage to the bead during the tire loading and unloading process. In this design, the d - bead diameter is taken as 571 mm; to ensure the best tire force and reduce the sidewall rigidity during tire use, the C - bead width in this design is taken as 244 mm.

[0029] b - The width of the tire tread has a greater impact on the wear performance of the tire, and h - the value of the designed crown arc height affects the ground contact pressure of the tire. Since this product is an all-weather fully applicable product, it is necessary to balance the tire's wear resistance, grip performance, and fuel-saving performance (reflected in the tire rolling resistance value). In this design, b is taken as 242 mm, h is taken as 5.8 mm, and h / H - H is the section height, taking 0.023.

[0030] The section horizontal axis affects the overall force of the tire and the contact state between the tire and the ground. It is the part where the carcass of the radial tire flexes the most, and the ratio of H1 / H2 - H1 is the lower section height, and H2 is the upper section height, which can directly reflect the position of the section horizontal axis of the tire. Combining past experience and product characteristics, the value of H1 / H2 in this design is taken as 0.928.

[0031] Furthermore, the belt layer and the carcass are designed to be reinforced, improving the load-bearing capacity of the tire, covering and damping the impact of road obstacles during driving, and reducing tire damage.

[0032] When manufacturing the tire vulcanization mold, grooves are engraved on the mold according to the designed pattern. The tire blank formed according to the construction standard is placed into the mold for vulcanization to produce the finished tire.

[0033] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "left", "right", "upper", "lower", "top", "bottom", "front", "rear", "inner", "outer", "back", "middle", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0034] However, the above are only specific embodiments of the present utility model, and the scope of implementation of the present utility model cannot be limited thereby. Therefore, the replacement of equivalent components or the equivalent changes and modifications made according to the scope of patent protection of the present utility model should still fall within the scope covered by the claims of the present utility model.

Claims

1. An all-weather adaptable all-steel radial tire, comprising a tread crown and a tread shoulder, wherein the tread shoulders are connected to both sides of the tread crown, and the tread crown is provided with a plurality of tread grooves (1), characterized in that: The tread groove (1) comprises a side wall 1 (11) and a side wall 2 (12); the inclination angle of the top of the side wall 1 (11) is greater than the inclination angle of the top of the side wall 2 (12); both the side wall 1 (11) and the side wall 2 (12) are provided with an outwardly protruding bite block (2); the lower ends of the side wall 1 (11) and the side wall 2 (12) are mutually bite-engaged.

2. The all-weather adaptable all-steel radial tire according to claim 1, characterized in that: The tread crown is provided with a plurality of pattern blocks (3), wherein the pattern blocks (3) include a first pattern block (31), a second pattern block (32), a third pattern block (33) and a fourth pattern block (34); the tread shoulder includes a left tread shoulder (4) and a right tread shoulder (5); the left tread shoulder (4), the first pattern block (31), the second pattern block (32), the third pattern block (33), the fourth pattern block (34) and the right tread shoulder (5) are arranged in sequence.

3. The all-weather adaptable all-steel radial tire according to claim 2, characterized in that: The left shoulder (4) and the right shoulder (5) have the same width, the first pattern block (31) and the fourth pattern block (34) have the same width, and the second pattern block (32) and the third pattern block (33) have the same width.

4. The all-weather adaptable all-steel radial tire according to claim 3, characterized in that: The widths of the left shoulder (4) and the right shoulder (5) are greater than the widths of the first pattern block (31) and the fourth pattern block (34), and the widths of the first pattern block (31) and the fourth pattern block (34) are greater than the widths of the second pattern block (32) and the third pattern block (33).

5. The all-weather adaptable all-steel radial tire according to claim 1, characterized in that: The plurality of grooves (1) are arranged in an oblique and staggered manner.

6. The all-weather adaptable all-steel radial tire according to claim 2, characterized in that: The ratio of the area occupied by the grooves (1) to the area occupied by the pattern blocks (3) is 23.5%.

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