Tread pattern structure of tubeless all-steel truck radial tire

Abstract

The utility model relates to a tubeless all-steel truck radial tire tread pattern structure which comprises a tire tread, and further comprises longitudinal straight groove patterns which are respectively and uniformly distributed from a central line to two sides in the circumferential direction of the tire tread and comprise a first longitudinal straight groove pattern and a second longitudinal straight groove pattern; the transverse inclined grooves are connected between the adjacent longitudinal straight groove patterns and comprise first transverse inclined straight grooves connected with the adjacent first longitudinal straight groove patterns, second transverse inclined straight grooves connected with the adjacent first longitudinal straight groove patterns and second longitudinal straight groove patterns, and Z-shaped transverse inclined grooves; the inclination direction of the first transverse inclined straight groove is opposite to that of the second transverse inclined straight groove, and the inclination direction of the second transverse inclined straight groove is consistent with that of the Z-shaped transverse inclined groove. Compared with the prior art, the utility model can effectively solve the problems of blockage of broken stones or foreign matters and low drainage efficiency, and has good guidance quality, drainage performance, road holding force, sideslip resistance and multi-road-condition adaptability under the condition of high-speed driving.

Description

Technical Field

[0001] This utility model relates to the field of tire tread pattern structure, and in particular to a tread pattern structure for a tubeless all-steel radial truck tire. Background Technology

[0002] Tires are annular, elastic rubber products fitted onto various vehicles or machinery for contact with the ground and rolling. They are typically mounted on metal rims, supporting the vehicle body, cushioning external impacts, ensuring contact with the road surface, and guaranteeing vehicle performance. Tires are often used under complex and harsh conditions, enduring various deformations, loads, forces, and extreme temperatures during operation. Therefore, they must possess high load-bearing capacity, traction, and cushioning performance. Simultaneously, they are required to have high wear resistance and flexural strength, as well as low rolling resistance and heat generation. Half of the world's rubber consumption is used in tire production, demonstrating the significant rubber consumption of tires.

[0003] Tire tread designs come in a variety of styles, tailored to different uses and road conditions. These factors should be considered when selecting tires. Tire tread plays a crucial role in overall driving performance. A well-designed tread pattern can not only effectively save fuel and reduce noise during driving, but also enhance the vehicle's driving force, braking force, and traction on various harsh and slippery road surfaces, thereby improving driving safety.

[0004] Patent authorization number CN219969317U discloses a tread pattern structure for a metric all-steel tubeless radial truck tire, including a tire body comprising a wheel disc and a tire tread. The tire tread has four longitudinal straight grooves, with grooves between them, and the bottom of each groove has a wavy bottom. Between the two middle straight grooves (A) of the four longitudinal grooves, multiple Z-shaped shallow grooves are evenly distributed along the circumference of the tire tread. Between the two outer straight grooves (B) of the four longitudinal grooves, grooves are evenly distributed along the circumference of the tire tread. These grooves are composed of continuous transverse grooves and diagonal fine grooves, forming a football-block-shaped shallow tread pattern. This tire features low rolling resistance, saving fuel; a closed shoulder design improves the rigidity of the shoulder tread strips, effectively preventing uneven wear; a wear-resistant tread compound design increases mileage; and it is suitable for highways, national roads, and provincial roads. However, this type of tire is prone to clogging by gravel or foreign objects during its long-term use, which affects its drainage performance, reduces its safety on wet and slippery roads, and makes it difficult to use on roads with poor working conditions or in severe weather. Utility Model Content

[0005] The purpose of this invention is to overcome the defects of the prior art by providing a tubeless all-steel radial truck tire tread pattern structure that can effectively solve the problems of stone or foreign object blockage and low drainage efficiency. The tire has good guidance, drainage, grip, anti-skid performance and adaptability to various road conditions at high speeds.

[0006] The objective of this utility model can be achieved through the following technical solutions:

[0007] A tubeless all-steel radial truck tire tread pattern structure, comprising a tire tread, wherein the tread pattern structure includes:

[0008] The longitudinal straight groove pattern is evenly distributed along the center line of the tire tread circumferential direction to both sides, including the first longitudinal straight groove pattern located near the center line area and the second longitudinal straight groove pattern located far from the center line area.

[0009] The transverse inclined groove connecting adjacent longitudinal straight groove patterns includes a first transverse inclined straight groove connecting adjacent first longitudinal straight groove patterns, a second transverse inclined straight groove connecting adjacent first longitudinal straight groove patterns and second longitudinal straight groove patterns, and a Z-shaped transverse inclined groove. The first transverse inclined straight groove and the second transverse inclined straight groove have opposite inclination directions, while the second transverse inclined straight groove and the Z-shaped transverse inclined groove have the same inclination direction.

[0010] And the patterned block surrounded by the longitudinal straight groove pattern and the transverse inclined groove.

[0011] Furthermore, the first longitudinal straight groove pattern has two lines, and the second longitudinal straight groove pattern has two lines. This utility model employs a longitudinal straight groove pattern design, providing driving safety in various weather conditions, resulting in low rolling resistance, low fuel consumption, low tire noise, and high comfort during driving.

[0012] Furthermore, the distance between adjacent first longitudinal straight groove patterns is 30-34 mm, and the distance between adjacent first longitudinal straight groove patterns and second longitudinal straight groove patterns is 30-34 mm.

[0013] Furthermore, the second lateral inclined straight grooves and Z-shaped lateral inclined grooves located on both sides of the center line of the tire tread circumferential direction are alternately staggered in the same direction.

[0014] Furthermore, the Z-shaped transverse inclined groove is located between two adjacent second transverse inclined straight grooves.

[0015] Furthermore, the spacing of the first transversely inclined straight groove is 0.5 to 1.5 mm, the spacing of the second transversely inclined straight groove is 0.5 to 1.5 mm, and the spacing of the Z-shaped transversely inclined groove is 2.5 to 3.5 mm.

[0016] Furthermore, the width of the first longitudinal straight groove pattern is 10-14 mm, the depth is 14-18 mm, and the inner corner at the bottom of the groove is a rounded transition with a radius of 1-3 mm;

[0017] The second longitudinal straight groove pattern has a width of 11-15mm and a depth of 14-18mm, with the inner corner at the bottom of the groove being a rounded transition with a radius of 4-5mm.

[0018] Furthermore, the bottom of the first longitudinal straight groove is provided with a number of row-shaped stone blocks, which include alternating large and small stone blocks, to provide the tire with excellent drainage and heat dissipation performance.

[0019] Furthermore, the dimensions of the large stone blocks are: length 5-8mm, width 2-5mm, height 2-4mm;

[0020] The dimensions of the small stone blocks are: length 3-5mm, length 0.4-1.2mm, height 2-4mm.

[0021] Furthermore, the first transverse inclined straight groove is 0.5 to 1.5 mm wide, 2 to 4 mm deep, and has an inclination angle of +10° to +20°. The bottom of the groove is a circular arc transition with a radius of 0.2 to 0.8 mm.

[0022] The second transverse inclined straight groove is 0.5-1.5 mm wide, 2-4 mm deep, and has an inclination angle of -20° to -10°. The bottom of the groove is a circular arc transition with a radius of 0.2-0.8 mm.

[0023] The Z-shaped transverse inclined groove is 1.5 to 2.5 mm wide, 2 to 4 mm deep, and has an inclination angle of -20° to -10°. The bottom of the groove is a circular arc transition with a radius of 0.2 to 0.8 mm.

[0024] Furthermore, the Z-shaped transverse inclined groove includes a first transverse segment, a vertical segment, and a second transverse segment connected end to end. The vertical segment is parallel to the longitudinal straight groove pattern, and the first transverse segment is parallel to it.

[0025] Furthermore, the length ratio of the first horizontal segment, the vertical segment, and the second horizontal segment is 14–18:4–8:14–18.

[0026] Furthermore, the pattern block includes a first pattern block located between adjacent first longitudinal straight groove patterns, and a second pattern block located between adjacent first longitudinal straight groove patterns and second longitudinal straight groove patterns.

[0027] Furthermore, the pattern block is surrounded by several vent holes that penetrate the mold, which facilitates venting during vulcanization, prevents air pockets from causing insufficient rubber at the rounded corners of the pattern and on the tire sidewall, promotes the flow of rubber material, and makes the vulcanization of the rubber material more uniform.

[0028] Furthermore, the diameter of the vent hole is 0.6 to 1 mm.

[0029] Furthermore, the shoulder of the tire tread is evenly distributed with several trapezoidal grooves along the circumference. The grooves are 18-22 mm long, 10-12 mm wide, and 2-4 mm deep. They are tapered and tilted inward at 15°-45° downward. The bottom of the groove has a rounded transition with a radius of 2-4 mm at the inner corner.

[0030] Furthermore, the tire tread is composed of nine equal movable sections.

[0031] Furthermore, the tread pitch of the tire is 75 pitches.

[0032] Furthermore, several wear indicators are provided circumferentially along the longitudinal grooves, which are raised platforms above the bottom of the grooves. When the tread wear depth reaches this critical threshold, it indicates that the tire has exceeded the legal safe wear limit and needs to be replaced in time to ensure driving safety. It is of great significance for safe driving and tire life.

[0033] Furthermore, the width of the wear mark is the same as the width of the longitudinal straight groove pattern surface, the length is 8-12mm, and the depth is 2-3mm.

[0034] Furthermore, a hollow circular hole with a diameter of 2-4 mm is provided at the center of the boss.

[0035] Furthermore, the wear indicators are provided at equal intervals along the circumference of the longitudinal straight groove pattern, with 4 to 8 marks.

[0036] Compared with the prior art, the present invention has the following advantages:

[0037] (1) This utility model adopts a longitudinal straight groove pattern design, which provides driving safety in various weather conditions. During driving, it has low rolling resistance, low fuel consumption, low tire noise, and high comfort.

[0038] (2) The tire with this tread pattern has high tread heat dissipation performance, reasonable tread arrangement, reduces abnormal wear, provides uniform wear and low rolling resistance, and enhances quietness and comfort. The symmetrical tread design ensures uniform wear and improves tire service life.

[0039] (3) In this invention, large and small stones are alternately distributed at the bottom of the first longitudinal straight groove patterned groove. The physical structure prevents stones from embedding, significantly reducing the risk of cracks at the bottom of the groove. At the same time, it optimizes stress distribution and extends the life of the groove.

[0040] (4) The first longitudinal straight groove pattern and the second longitudinal straight groove pattern of this utility model are set with different widths, and the bottom of the groove is made of large radius arc transition, which is conducive to enhancing drainage performance and dispersing stress.

[0041] (5) This utility model provides a first transverse inclined straight groove at the center line of the tire tread circumferentially, forming a one-way water guiding channel. Water flows out quickly along the inclined direction, which is beneficial to enhancing the drainage performance of the central area. The inclined direction and the tire rolling direction form a directional shear force, which enhances the longitudinal grip and lateral anti-skid ability on wet and slippery roads. Moreover, the stress distribution is uniform, which is beneficial to reducing the risk of cracks at the bottom of the groove. A second transverse inclined straight groove and a Z-shaped transverse inclined groove are provided on both sides. The Z-shaped transverse inclined groove enhances the lateral traction force, while the first transverse inclined straight groove and the second transverse inclined straight groove guide the water flow to drain quickly and prevent blockage. It performs excellently in braking, steering, and wet and slippery roads, covering the needs of multiple scenarios such as highways, national highways, and provincial highways.

[0042] (6) The second transverse inclined straight groove and the Z-shaped transverse inclined groove of this utility model are alternately staggered in the same direction, so that the second patterned blocks are staggered in the same direction, which helps to reduce periodic vibration noise and reduce the probability of uneven wear. Moreover, the patterned blocks have a uniform width, ensuring uniform distribution of grounding pressure and improving wear resistance life. Attached Figure Description

[0043] Figure 1 This is a schematic diagram of the tire tread pattern in Example 1;

[0044] Figure 2 This is a structural diagram of a single pitch of the tire tread pattern in Example 1.

[0045] Explanation of markings in the diagram:

[0046] 1- Tire tread;

[0047] 2-Vertical straight groove pattern, 21-First vertical straight groove pattern, 211-Row of stones, 2111-Large row of stones, 2112-Small row of stones, 22-Second vertical straight groove pattern;

[0048] 3- Lateral inclined groove, 31- First lateral inclined straight groove, 32- Second lateral inclined straight groove, 33- Z-shaped lateral inclined groove, 331- First lateral section, 332- Vertical section, 333- Second lateral section;

[0049] 4-Patterned block, 41-First patterned block, 42-Second patterned block;

[0050] 5 - Wear indicators;

[0051] 6-Exhaust port;

[0052] 7-Square ditch. Detailed Implementation

[0053] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. The embodiments are implemented based on the technical solution of the present invention, providing detailed implementation methods and specific operating procedures. However, the scope of protection of the present invention is not limited to the following embodiments. In the following embodiments or examples, unless otherwise specified, the functional components or structures are conventional components or structures used in the art to achieve the corresponding functions.

[0054] It should be noted that in the description of this utility model, the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0055] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0056] Example 1

[0057] A tubeless all-steel radial truck tire tread pattern structure, such as Figure 1 and 2 As shown, the tire includes a tread 1, and the tread pattern includes:

[0058] The longitudinal straight groove pattern 2 is evenly distributed along the center line of the tire tread 1 in the circumferential direction to both sides, including the first longitudinal straight groove pattern 21 located near the center line area and the second longitudinal straight groove pattern 22 located away from the center line area.

[0059] The transverse inclined groove 3 connecting adjacent longitudinal straight groove patterns 2 includes a first transverse inclined straight groove 31 connecting adjacent first longitudinal straight groove patterns 21, a second transverse inclined straight groove 32 connecting adjacent first longitudinal straight groove patterns 21 and second longitudinal straight groove patterns 22, and a Z-shaped transverse inclined groove 33. The first transverse inclined straight groove 31 and the second transverse inclined straight groove 32 have opposite inclination directions, while the second transverse inclined straight groove 32 and the Z-shaped transverse inclined groove 33 have the same inclination direction.

[0060] And the patterned block 4 surrounded by the longitudinal straight groove pattern 2 and the transverse inclined groove 3.

[0061] In this embodiment, the first longitudinal straight groove pattern 21 has two lines, and the second longitudinal straight groove pattern 22 has two lines. This utility model employs the longitudinal straight groove pattern 2 design to provide driving safety in various weather conditions, resulting in low rolling resistance, low fuel consumption, low tire noise, and high comfort during driving.

[0062] In this embodiment, the distance between adjacent first longitudinal straight groove patterns 21 is 32mm, and the distance between adjacent first longitudinal straight groove patterns 21 and second longitudinal straight groove patterns 22 is 32mm.

[0063] In this embodiment, the second lateral inclined straight groove 32 and the Z-shaped lateral inclined groove 33 located on both sides of the center line of the tire tread 1 are alternately staggered in the same direction.

[0064] In this embodiment, the Z-shaped transverse inclined groove 33 is located between two adjacent second transverse inclined straight grooves 32.

[0065] In this embodiment, the spacing of the first transverse inclined straight grooves 31 is 1 mm, the spacing of the second transverse inclined straight grooves 32 is 1 mm, and the spacing of the Z-shaped transverse inclined grooves 33 is 3 mm.

[0066] In this embodiment, the first longitudinal straight groove pattern 21 has a width of 12mm and a depth of 16mm, and the inner corner at the bottom of the groove is a rounded transition with a radius of 2mm.

[0067] The second longitudinal straight groove pattern 22 has a width of 13mm and a depth of 16mm, and the inner corner at the bottom of the groove is a rounded transition with a radius of 4.4mm.

[0068] In this embodiment, the bottom of the first longitudinal straight groove pattern 21 is provided with a plurality of row-shaped stone blocks 211, including alternating large row stone blocks 2111 and small row stone blocks 2112, which provide the tire with excellent drainage and heat dissipation performance. The dimensions of the large row stone blocks 2111 are: length 6mm, 3.5mm, and height 3mm; the dimensions of the small row stone blocks 2112 are: length 4.9mm, 0.8mm, and height 3mm.

[0069] In this embodiment, the first transverse inclined straight groove 31 is 1mm wide, 3mm deep, and has an inclination angle of +15°. The bottom of the groove is a circular arc transition with a radius of 0.5mm.

[0070] The second transverse inclined straight groove 32 is 1mm wide, 3mm deep, and inclined at an angle of -15°. The bottom of the groove is a circular arc transition with a radius of 0.5mm.

[0071] The Z-shaped transverse inclined groove 33 is 2mm wide, 3mm deep, and inclined at an angle of -15°. The bottom of the groove is a circular arc transition with a radius of 0.2 to 0.8mm.

[0072] In this embodiment, the Z-shaped transverse inclined groove 33 includes a first transverse segment 331, a vertical segment 332, and a second transverse segment 333 connected end to end. The vertical segment 332 is parallel to the longitudinal straight groove pattern 2, and the first transverse segment 331 is parallel to the second transverse segment 333. The length ratio of the first transverse segment 331, the vertical segment 332, and the second transverse segment 333 is 16.56:6.21:16.56.

[0073] In this embodiment, the pattern block 4 includes a first pattern block 41 located between adjacent first longitudinal straight groove patterns 21, and a second pattern block 42 located between adjacent first longitudinal straight groove patterns 21 and second longitudinal straight groove patterns 22.

[0074] In this embodiment, the pattern block 4 is surrounded by several vent holes 6 with a diameter of 0.8mm that penetrate the mold. This facilitates venting during vulcanization, prevents air pockets from causing rounded corners of the pattern and missing rubber on the tire sidewall, promotes rubber flow, and makes the rubber vulcanization more uniform.

[0075] In this embodiment, the shoulder of the tire tread 1 is evenly distributed with several trapezoidal square grooves 7 along the circumference. The grooves are 20.5 mm long, 10-12 mm wide, 10 mm at one end and 12 mm at the other end, and 3 mm deep. They are tapered and tilted inward at 30° downward. The bottom corner of the groove is a circular arc with a radius of 3 mm.

[0076] In this embodiment, the tire tread 1 is composed of nine equal parts of movable mold.

[0077] In this embodiment, the tread pitch of the tire tread 1 is 75 pitches.

[0078] In this embodiment, six wear indicators 5 are evenly spaced along the circumference of the longitudinal groove pattern 2. These are raised protrusions above the bottom of the groove. When the tread wear depth reaches this critical threshold, it indicates that the tire has exceeded the legal safe wear limit and needs to be replaced in time to ensure driving safety. This is of great significance for the safe driving of the vehicle and the service life of the tire. The width of the wear indicator 5 is the same as the width of the longitudinal groove pattern 2, the length is 10mm, and the depth is 2.4mm. A hollow circular hole with a diameter of 3mm is provided at the center of the protrusion.

[0079] The above description of the embodiments is provided to enable those skilled in the art to understand and use the utility model. It will be apparent to those skilled in the art that various modifications can be easily made to these embodiments, and the general principles described herein can be applied to other embodiments without inventive effort. Therefore, the present utility model is not limited to the above embodiments, and any improvements and modifications made by those skilled in the art based on the disclosure of the present utility model without departing from its scope should be within the protection scope of the present utility model.

Claims

1. A tubeless truck and bus radial tire tread pattern structure comprising a tire tread (1), characterized in that, The pattern structure includes: The longitudinal straight groove pattern (2) is evenly distributed along the center line of the tire tread (1) to both sides, including the first longitudinal straight groove pattern (21) located near the center line area and the second longitudinal straight groove pattern (22) located far from the center line area; The transverse inclined groove (3) connecting adjacent longitudinal straight groove patterns (2) includes a first transverse inclined straight groove (31) connecting adjacent first longitudinal straight groove patterns (21), a second transverse inclined straight groove (32) connecting adjacent first longitudinal straight groove patterns (21) and second longitudinal straight groove patterns (22) and a Z-shaped transverse inclined groove (33). The first transverse inclined straight groove (31) and the second transverse inclined straight groove (32) have opposite inclination directions, and the second transverse inclined straight groove (32) and the Z-shaped transverse inclined groove (33) have the same inclination direction. And the patterned block (4) surrounded by the longitudinal straight groove pattern (2) and the transverse inclined groove (3).

2. The inner liner-free type TBR tire tread pattern structure according to claim 1, wherein, The first longitudinal straight groove pattern (21) has two lines, and the second longitudinal straight groove pattern (22) has two lines.

3. The inner liner-free type TBR tire tread pattern structure according to claim 1, wherein, The second lateral inclined straight groove (32) and the Z-shaped lateral inclined groove (33) located on both sides of the center line of the tire tread (1) are alternately staggered in the same direction.

4. The full steel truck radial tire according to claim 1, wherein, The Z-shaped transverse inclined groove (33) is located between two adjacent second transverse inclined straight grooves (32).

5. The inner liner-free type TBR tire tread pattern structure according to claim 1, wherein, The first longitudinal straight groove pattern (21) has a width of 10-14 mm and a depth of 14-18 mm, and the inner corner at the bottom of the groove is a rounded transition with a radius of 1-3 mm; The second longitudinal straight groove pattern (22) has a width of 11-15mm and a depth of 14-18mm, and the inner corner at the bottom of the groove is a rounded transition with a radius of 4-5mm.

6. The tread pattern structure of a tubeless truck and bus radial tire according to claim 1, wherein The bottom of the first longitudinal straight groove pattern (21) is provided with a number of row-shaped stone blocks (211), which include alternating large row stone blocks (2111) and small row stone blocks (2112).

7. The inner liner-free type TBR tire tread pattern structure according to claim 6, wherein The dimensions of the large stone block (2111) are: length 5-8mm, width 2-5mm, height 2-4mm; The dimensions of the small stone blocks (2112) are: length 3-5mm, length 0.4-1.2mm, height 2-4mm.

8. The tread pattern structure of a tubeless truck and bus radial tire according to claim 1, wherein The first transverse inclined straight groove (31) is 0.5 to 1.5 mm wide, 2 to 4 mm deep, and has an inclination angle of +10° to +20°. The bottom of the groove is a circular arc transition with a radius of 0.2 to 0.8 mm. The second transverse inclined straight groove (32) is 0.5-1.5 mm wide, 2-4 mm deep, and has an inclination angle of -20° to -10°. The bottom of the groove is a circular arc transition with a radius of 0.2-0.8 mm. The Z-shaped transverse inclined groove (33) is 1.5 to 2.5 mm wide, 2 to 4 mm deep, with an inclination angle of -20° to -10°, and the bottom of the groove is a circular arc transition with a radius of 0.2 to 0.8 mm.

9. The tread pattern structure of a tubeless truck and bus radial tire according to claim 1, wherein The Z-shaped transverse inclined groove (33) includes a first transverse section (331), a vertical section (332), and a second transverse section (333) connected end to end. The vertical section (332) is parallel to the longitudinal straight groove pattern (2), and the first transverse section (331) is parallel to the second transverse section (333).

10. The tread pattern structure of a tubeless truck and bus radial tire according to claim 1, wherein The shoulder of the tire tread (1) has several trapezoidal square grooves (7) evenly distributed circumferentially. The grooves are 18-22 mm long, 10-12 mm wide, and 2-4 mm deep. They are cone-shaped and tilted inward at 15°-45° downward. The bottom of the groove has a circular arc with a radius of 2-4 mm at the inner corner.

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