Tread pattern structure of medium-short-distance all-steel truck radial tire

Abstract

The utility model relates to a middle-short distance all-steel truck radial tire tread pattern structure which comprises a tire tread, the tire tread comprises a pattern part and a tire shoulder part, and the pattern part comprises a plurality of transverse pattern groove groups. Each transverse pattern groove group comprises two transverse pattern grooves which are distributed in a centrosymmetric and staggered manner along a certain point on the circumferential center line of the tire tread, and each transverse pattern groove comprises a first groove wall surface, a second groove wall surface and a first arc groove bottom which are different in angle; the longitudinal pattern grooves comprise first longitudinal pattern grooves and second longitudinal pattern grooves; the pattern block groups are formed by surrounding the adjacent transverse pattern grooves and longitudinal pattern grooves. Compared with the prior art, the tire provided by the utility model has the advantages of excellent heat dissipation performance, puncture resistance and high wear resistance in the use process.

Description

Technical Field

[0001] This utility model relates to the field of tire design technology, and in particular to a tread pattern structure for a medium- and short-range 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, electrical 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] The main medium- and short-range all-steel radial truck tires on the market are mainly used on gravel and cement mixed roads. The main quality problems of the tires are tread chipping and falling off, poor wear resistance, crown gaps and shoulder gaps. The tires have high requirements for load-bearing performance.

[0005] Patent publication number CN204249741U discloses a tread pattern structure for a medium-to-short-range all-steel radial truck tire. This structure features multiple tread block groups distributed along the tire circumference, including inner and outer tread block groups. These inner or outer tread block groups are symmetrically and alternately arranged along the tread centerline, forming continuous, stepped transverse tread grooves. The grooves gradually widen from the tread center to the shoulder, and rubber studs are located at the bottom of the grooves. The inner and outer tread blocks are connected by reinforcing ribs. However, this design still suffers from relatively poor wear resistance, susceptibility to punctures from hard objects, poor heat dissipation, and some shoulder gaps. Utility Model Content

[0006] The purpose of this invention is to overcome the shortcomings of the existing technology, such as relatively poor wear resistance, susceptibility to punctures by hard objects, and poor heat dissipation, and to provide a tread pattern structure for medium and short-range all-steel radial truck tires, which provides excellent heat dissipation performance, puncture resistance, and high wear resistance during tire use.

[0007] The objective of this utility model can be achieved through the following technical solutions:

[0008] A tread pattern structure for a medium-to-short range all-steel radial truck tire includes a tire tread, wherein the tire tread comprises a tread portion and a shoulder portion, and the tread portion includes:

[0009] Several groups of transverse tread grooves are distributed along the circumference of the tire tread. Each group of transverse tread grooves includes two transverse tread grooves that are centrally symmetrically arranged and staggered along a certain point on the circumferential center line of the tire tread. The transverse tread grooves include a first groove wall and a second groove wall with different angles, and a first arc groove bottom connected to the first groove wall and the second groove wall.

[0010] Several longitudinal patterned grooves, including a first longitudinal patterned groove connecting two adjacent groups of transverse patterned grooves, and a second longitudinal patterned groove connecting two transverse patterned grooves within a group of transverse patterned grooves.

[0011] And a group of tread blocks formed by adjacent lateral and longitudinal tread grooves, including inner and outer tread blocks distributed circumferentially along the tire tread, wherein the inner tread blocks are symmetrically staggered along the circumferential centerline of the tire tread, and the outer tread blocks are symmetrically staggered along the circumferential centerline of the tire tread.

[0012] Furthermore, each of the transverse tread grooves is Z-shaped, with one end located on the circumferential center line of the tire tread and the other end extending to the shoulder portion of the tire tread.

[0013] Furthermore, shoulder grooves are provided on both sides of the transverse tread grooves located on the shoulder portion, and the shoulder grooves include a first step groove, a second step groove, and a third step groove connected sequentially from top to bottom.

[0014] The widths of the first, second, and third stepped ditches decrease sequentially from top to bottom;

[0015] The first, second, and third stepped ditches have the same inclination angle on the same side of the ditch wall, while the opposite sides have different inclination angles. The inclination angles are all 12°~18° inward on one side and 5°~10° inward on the other side.

[0016] Furthermore, the first, second, and third stepped ditches are transitioned by circular arcs.

[0017] Furthermore, the bottom of the third-step trench is an arc-shaped trench bottom.

[0018] Furthermore, the first stepped groove has a surface width of 20-24 mm and a depth of 5.5-6.5 mm; the second stepped groove has a surface width of 16-19 mm and a depth of 5-6 mm; the third stepped groove has a surface width of 12-14 mm, a depth of 6-7 mm, and a bottom arc radius of 4-7 mm.

[0019] Furthermore, the angle of the first groove wall of the transverse patterned groove is 12°~18° inward, the angle of the second groove wall is 5°~10° inward, the radius of the bottom of the first arc groove is 3~8mm, the arc is 180°, the depth of the transverse patterned groove is 15~20mm, and the surface width is 12~24mm.

[0020] The first groove wall of the transverse tread groove has an inward angle of 12°~18°, and the second groove wall has an inward angle of 5°~10°. This means that the angle between the first groove wall and the center line of the tire tread is 12°~18°, and the angle between the second groove wall and the center line of the tire tread is 5°~10°. The bottoms of the first groove wall and the second groove wall are close to each other.

[0021] Furthermore, several protrusions are evenly distributed within the bottom of the first arc groove of the transverse patterned groove;

[0022] The protrusion has a height of 2-4 mm, a length of 8-10 mm, and a width of 3-5 mm.

[0023] Furthermore, the first longitudinal groove includes a third groove wall and a fourth groove wall with the same angle, and a second arcuate groove bottom connected to the third groove wall and the fourth groove wall; the third groove wall and the fourth groove wall have the same angle, which is 3°~6° inward; the radius of the second arcuate groove bottom is 3~8m, the arc is 180°, the depth of the first longitudinal groove is 8~12mm, and the surface width is 12~24mm;

[0024] The second longitudinal groove includes a fifth groove wall and a sixth groove wall with the same angle, and a third arc-shaped groove bottom connected to the fifth groove wall and the sixth groove wall; the fifth groove wall and the sixth groove wall have the same angle, which is 10°~15° inward; the radius of the third arc-shaped groove bottom is 4~4.5mm, the arc is 180°, the depth of the second longitudinal groove is 7~10mm, and the surface width is 10~13.5mm.

[0025] Furthermore, the inner patterned block is hexagonal, with the interior angles of the hexagon set to 100°~140°; the outer patterned block is hexagonal, with the interior angles of the hexagon set to 70°~230°.

[0026] Furthermore, the outer patterned block is provided with several heat dissipation holes;

[0027] The tire tread has several axially distributed heat dissipation vents on its shoulder portion.

[0028] Furthermore, the diameter of the heat dissipation holes decreases uniformly from top to bottom, with a bottom diameter of 2.5–3.5 mm and a top diameter of 3.5–4.5 mm;

[0029] The vertical cross-section of the heat dissipation duct is an inverted convex shape, including a first groove and a second groove that are connected from top to bottom. The cross-section of the first groove is elliptical, with a length of 16~18mm, a width of 10~12mm, and a depth of 4~5mm; the cross-section of the second groove is elliptical, with a length of 8~10mm, a width of 5~6.5mm, and a depth of 3~4mm.

[0030] Furthermore, all the turning points of the heat dissipation tunnel are circular arc interference connections.

[0031] Furthermore, the tire tread is composed of ten equal movable parts, and the tread pattern pitch of the tire tread is 46 segments.

[0032] Compared with the prior art, the present invention has the following beneficial effects:

[0033] (1) The transverse tread grooves of this utility model are arranged symmetrically and alternately along a certain point on the circumferential center line of the tire tread. The driving surface is wide and the tread is deep, resulting in excellent driving force, braking force and traction. Moreover, its wear resistance is excellent, which makes the tire grip higher than that of ordinary transverse tread grooves during use. It also makes the contact area between the tire tread structure and the road surface more rationally distributed, and the force-bearing surface larger, reducing the quality problems caused by concentrated force on the tire and improving the tire wear resistance.

[0034] (2) The first groove wall and the second groove wall of the transverse tread groove of this utility model are designed with different angles. This design is suitable for tires in use. When hard objects such as stones come into contact with the first groove wall and the second groove wall, the force is different, so that hard objects such as stones will be automatically ejected and avoid being left in the tread groove and damaging the bottom of the tread groove. The bottom of the groove is increased with protrusions to prevent hard objects such as stones from piercing, effectively preventing the bottom of the groove from cracking, and has good drainage and mud removal properties.

[0035] (3) The transverse and longitudinal grooves of this utility model are set at different angles and the groove depths are set at different depths. This design is applicable to tires in use when hard objects such as stones are subjected to different forces when they come into contact with the first groove wall and the second groove wall, so that hard objects such as stones are automatically ejected and avoid being left in the grooves and damaging the bottom of the grooves.

[0036] (4) Each of the transverse tread grooves of this utility model is Z-shaped, with one end located on the circumferential center line of the tire tread and the other end extending to the shoulder portion of the tire tread. Shoulder tread grooves are provided on both sides of the transverse tread grooves located on the shoulder portion. The stepped structure connection design of the shoulder tread grooves reduces the surface area of ​​the shoulder tread, reduces the contact area between the tire tread surface and the ground, and reduces the heat generation of the shoulder in the early stage of the tire. As the tire service life is extended, the overall tread of the tire becomes shallower, the overall weight is reduced, and the heat generation of the shoulder is reduced. The stepped structure connection design of the shoulder tread grooves increases the contact area between the tire tread and the ground during subsequent use, thereby improving the tire's grip in the later stages.

[0037] (5) The heat dissipation wind tunnel and heat dissipation holes of this utility model reduce the material of the tire shoulder and increase the heat dissipation area of ​​the tire shoulder, which is beneficial to heat dissipation during tire driving, protects the shoulder, and avoids early shoulder void problems.

[0038] (6) The pattern structure of this utility model has excellent puncture resistance, does not chip or break, and does not have side gaps, and can be applied to impact-resistant and explosion-proof tires.

[0039] This invention features longitudinal tread grooves, which are beneficial for the overall tire tread design, making the tire tread more aesthetically pleasing. It also reduces the tire tread contact area, decreases the stress on the tire tread blocks, and reduces quality problems in the early stages of tire use. Attached Figure Description

[0040] Figure 1 This is a schematic diagram of the tire tread pattern structure shown in Example 2;

[0041] Figure 2 This is a schematic diagram of the shoulder pattern groove shown in Example 2;

[0042] Figure 3 This is a schematic diagram of the cross-sectional structure of the transverse patterned groove shown in Example 2.

[0043] Explanation of markings in the diagram:

[0044] 1 - Tire tread, 11 - Cooling tunnel;

[0045] 2 - Horizontal groove, 21 - First groove wall, 22 - Second groove wall, 23 - First circular groove bottom, 231 - Protrusion;

[0046] 3 - Longitudinal patterned groove, 31 - First longitudinal patterned groove, 311 - Third groove wall, 312 - Fourth groove wall, 32 - Second longitudinal patterned groove, 321 - Fifth groove wall, 322 - Sixth groove wall;

[0047] 4 - Patterned block group, 41 - Inner patterned block, 42 ​​- Outer patterned block, 421 - Heat dissipation hole;

[0048] 5 - Shoulder pattern groove, 51 - First step groove, 52 - Second step groove, 53 - Third step groove. Detailed Implementation

[0049] 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.

[0050] 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.

[0051] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" 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.

[0052] Example 1

[0053] A tread pattern structure for a medium-to-short range all-steel radial truck tire includes a tire tread 1, wherein the tire tread 1 includes a tread portion and a shoulder portion, and the tread portion includes:

[0054] Several groups of transverse tread grooves are distributed circumferentially along the tire tread 1. Each group of transverse tread grooves includes two transverse tread grooves 2 that are centrally symmetrically arranged and staggered along a certain point on the circumferential center line of the tire tread 1. The transverse tread groove 2 includes a first groove wall 21 and a second groove wall 22 with different angles, and a first arc groove bottom 23 connected to the first groove wall 21 and the second groove wall 22.

[0055] Several longitudinal patterned grooves 3, including a first longitudinal patterned groove 31 connecting two adjacent groups of transverse patterned grooves, and a second longitudinal patterned groove 32 connecting two transverse patterned grooves 2 within a group of transverse patterned grooves;

[0056] The tire tread 1 is surrounded by adjacent transverse grooves 2 and longitudinal grooves 3, forming a tread block group 4, which includes inner tread blocks 41 and outer tread blocks 42 distributed circumferentially along the tire tread 1. The inner tread blocks 41 are symmetrically and alternately arranged along the circumferential center line of the tire tread 1, and the outer tread blocks 42 are symmetrically and alternately arranged along the circumferential center line of the tire tread 1.

[0057] In this embodiment, the angle of the first groove wall 21 of the transverse patterned groove 2 is 15° inward, the angle of the second groove wall 22 is 8° inward, the radius of the first arc groove bottom 23 is 5mm, the arc is 180°, the depth of the transverse patterned groove 2 is 18mm, and the surface width is 15mm.

[0058] Wherein, the angle of the first groove wall 21 of the transverse tread groove 2 is 15° inward and the angle of the second groove wall 22 is 8° inward, which means that the angle between the first groove wall 21 and the center line of the tire tread 1 is 15° and the angle between the second groove wall 22 and the center line of the tire tread 1 is 8°, and the bottoms of the first groove wall 21 and the second groove wall 22 are close to each other.

[0059] In this embodiment, a plurality of protrusions 231 are evenly distributed in the bottom 23 of the first arc groove of the transverse patterned groove 2;

[0060] The protrusion 231 has a height of 3mm, a length of 9mm, and a width of 4mm.

[0061] In this embodiment, the first longitudinal groove 31 includes a third groove wall 311 and a fourth groove wall 312 with the same angle, and a second arc-shaped groove bottom connected to the third groove wall 311 and the fourth groove wall 312; the third groove wall 311 and the fourth groove wall 312 have the same angle, which is 5° inward; the radius of the second arc-shaped groove bottom is 4.5mm, the arc is 180°, the depth of the first longitudinal groove 31 is 10mm, and the surface width is 13.0mm;

[0062] The second longitudinal groove 32 includes a fifth groove wall 321 and a sixth groove wall 322 with the same angle, and a third arc-shaped groove bottom connected to the fifth groove wall 321 and the sixth groove wall 322; the fifth groove wall 321 and the sixth groove wall 322 have the same angle, which is 12° inward; the radius of the third arc-shaped groove bottom is 4.5mm, the arc is 180°, the depth of the second longitudinal groove 32 is 8.5mm, and the surface width is 13.5mm.

[0063] In this embodiment, the inner pattern block 41 is a hexagonal block with an interior angle of 100°~140°; the outer pattern block 42 is a hexagonal block with an interior angle of 70°~230°.

[0064] In this embodiment, the tire tread 1 is composed of ten equal movable molds, and the tread pitch of the tire tread 1 is 46 segments.

[0065] Example 2

[0066] A tread pattern structure for a medium-to-short range all-steel radial truck tire, such as Figure 1 As shown, the tire includes a tread 1, which comprises a tread pattern portion and a shoulder portion. The tread pattern portion includes:

[0067] Several groups of transverse tread grooves are distributed circumferentially along the tire tread 1. Each group of transverse tread grooves includes two transverse tread grooves 2 that are centrally symmetrically arranged and staggered along a certain point on the circumferential center line of the tire tread 1. The transverse tread groove 2 includes a first groove wall 21 and a second groove wall 22 with different angles, and a first arc groove bottom 23 connected to the first groove wall 21 and the second groove wall 22.

[0068] Several longitudinal patterned grooves 3, including a first longitudinal patterned groove 31 connecting two adjacent groups of transverse patterned grooves, and a second longitudinal patterned groove 32 connecting two transverse patterned grooves 2 within a group of transverse patterned grooves;

[0069] The tire tread 1 is surrounded by adjacent transverse grooves 2 and longitudinal grooves 3, forming a tread block group 4, which includes inner tread blocks 41 and outer tread blocks 42 distributed circumferentially along the tire tread 1. The inner tread blocks 41 are symmetrically and alternately arranged along the circumferential center line of the tire tread 1, and the outer tread blocks 42 are symmetrically and alternately arranged along the circumferential center line of the tire tread 1.

[0070] In this embodiment, each of the transverse tread grooves 2 is Z-shaped, with one end located on the circumferential center line of the tire tread 1 and the other end extending to the shoulder portion of the tire tread 1.

[0071] In this embodiment, as Figure 1 and 2 As shown, shoulder tread grooves 5 are provided on both sides of the transverse tread groove 2 located on the shoulder portion. The shoulder tread groove 5 includes a first step groove 51, a second step groove 52, and a third step groove 53 connected sequentially from top to bottom.

[0072] The widths of the first stepped ditch 51, the second stepped ditch 52, and the third stepped ditch 53 decrease sequentially from top to bottom;

[0073] The first step trench 51, the second step trench 52, and the third step trench 53 have the same inclination angle on the same side of the trench wall, and different inclination angles on opposite sides of the trench wall. The inclination angles are all 15° inward on one side and 8° inward on the other side.

[0074] In this embodiment, the first stepped groove 51, the second stepped groove 52, and the third stepped groove 53 adopt a circular arc transition.

[0075] In this embodiment, the bottom of the third step groove 53 is an arc-shaped groove bottom.

[0076] In this embodiment, the first stepped groove has a surface width of 24mm and a depth of 6mm; the second stepped groove has a surface width of 18.5mm and a depth of 5.5mm; and the third stepped groove has a surface width of 13.5mm and a depth of 6.5mm, with a bottom arc radius of 6mm. The stepped structure connection design of the shoulder tread grooves reduces the surface area of ​​the shoulder tread, decreasing the contact area with the ground and reducing heat generation in the shoulder area in the early stages of tire use. As the tire's service life extends, the overall tread pattern becomes shallower, reducing overall weight and shoulder heat generation. The stepped structure connection design of the shoulder tread grooves also increases the contact area with the ground during subsequent tire use, improving the tire's grip in later stages.

[0077] In this embodiment, as Figure 3 As shown, the first groove wall 21 of the transverse patterned groove 2 has an inward angle of 15°, the second groove wall 22 has an inward angle of 8°, the radius of the first arc groove bottom 23 is 5mm, the arc is 180°, the depth of the transverse patterned groove 2 is 18mm, and the surface width is 15mm.

[0078] Wherein, the angle of the first groove wall 21 of the transverse tread groove 2 is 15° inward and the angle of the second groove wall 22 is 8° inward, which means that the angle between the first groove wall 21 and the center line of the tire tread 1 is 15° and the angle between the second groove wall 22 and the center line of the tire tread 1 is 8°, and the bottoms of the first groove wall 21 and the second groove wall 22 are close to each other.

[0079] In this embodiment, a plurality of protrusions 231 are evenly distributed in the bottom 23 of the first arc groove of the transverse patterned groove 2;

[0080] The protrusion 231 has a height of 3mm, a length of 9mm, and a width of 4mm.

[0081] In this embodiment, the first longitudinal groove 31 includes a third groove wall 311 and a fourth groove wall 312 with the same angle, and a second arc-shaped groove bottom connected to the third groove wall 311 and the fourth groove wall 312; the third groove wall 311 and the fourth groove wall 312 have the same angle, which is 5° inward; the radius of the second arc-shaped groove bottom is 4.5mm, the arc is 180°, the depth of the first longitudinal groove 31 is 10mm, and the surface width is 13.0mm;

[0082] The second longitudinal groove 32 includes a fifth groove wall 321 and a sixth groove wall 322 with the same angle, and a third arc-shaped groove bottom connected to the fifth groove wall 321 and the sixth groove wall 322; the fifth groove wall 321 and the sixth groove wall 322 have the same angle, which is 12° inward; the radius of the third arc-shaped groove bottom is 4.5mm, the arc is 180°, the depth of the second longitudinal groove 32 is 8.5mm, and the surface width is 13.5mm.

[0083] In this embodiment, the inner pattern block 41 is a hexagonal block with an interior angle of 100°~140°; the outer pattern block 42 is a hexagonal block with an interior angle of 70°~230°.

[0084] In this embodiment, the outer patterned block 42 is provided with a plurality of heat dissipation holes 421;

[0085] The tire tread 1 has several axially distributed heat dissipation vents 11 on its shoulder portion.

[0086] In this embodiment, the diameter of the heat dissipation hole 421 decreases uniformly from top to bottom, with a bottom diameter of 3mm and a top diameter of 4mm;

[0087] The vertical cross-section of the heat dissipation duct 11 is an inverted convex shape, including a first groove 111 and a second groove 112 that are connected from top to bottom. The cross-section of the first groove 111 is elliptical, with a length of 16mm, a width of 12mm, and a depth of 4.5mm; the cross-section of the second groove 112 is elliptical, with a length of 9mm, a width of 6.5mm, and a depth of 3.5mm.

[0088] In this embodiment, all turning points of the heat dissipation tunnel 11 are circular arc interference connections.

[0089] In this embodiment, the tire tread 1 is composed of ten equal movable molds, and the tread pitch of the tire tread 1 is 46 segments.

[0090] After adopting the tire tread pattern structure in this embodiment, the performance was tested according to the enterprise standard "Indoor Test Method for Performance of Radial Tires for Heavy-Duty Trucks" as follows: The enterprise standard is higher than the national standard GB / T4501:

[0091] The standard durability test conditions are: air pressure 930 kPa, standard load 4250 kg (22-ply), starting speed 50 km / h, constant speed, and load increasing by 10% every 10 hours thereafter until tire failure. In this embodiment, the standard durability time is 82 hours and 10 minutes for the tire, while our existing 12.00R20 F626A tire has a standard durability of 71 hours and 10 minutes. This represents an improvement of 11 hours and 0 minutes compared to the existing tire. In the tire strength test in this embodiment, the first four points: 3220, the fifth point puncture: 6069, and the maximum destructive energy / standard value: 188.05% puncture. In the existing tire strength test, the first four points: 3220, the fifth point puncture: 5551.8, and the maximum destructive energy / standard value: 172% puncture. Indoor strength tests and outdoor actual vehicle mileage tests have confirmed that the indoor strength performance and outdoor mileage of the medium and short distance all-steel radial tire of this utility model have been greatly improved. The tread pattern of this utility model has high strength and wear resistance, and the tire reduces the probability of early tire damage caused by shoulder gaps, crown gaps, and poor tread wear.

[0092] 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 interpretation of the present utility model without departing from its scope should be within the protection scope of the present utility model.

Claims

1. A tread pattern structure for a medium-to-short-range all-steel radial truck tire, comprising a tire tread (1), characterized in that, The tire tread (1) includes a tread pattern portion and a shoulder portion, wherein the tread pattern portion includes: Several sets of transverse tread grooves are distributed circumferentially along the tire tread (1). Each set of transverse tread grooves includes two transverse tread grooves (2) that are symmetrically and alternately arranged at a certain point on the circumferential center line of the tire tread (1). The transverse tread grooves (2) include a first groove wall (21) and a second groove wall (22) with different angles, and a first arc groove bottom (23) that connects to the first groove wall (21) and the second groove wall (22). Several longitudinal patterned grooves (3) include a first longitudinal patterned groove (31) connecting two adjacent groups of transverse patterned grooves, and a second longitudinal patterned groove (32) connecting two transverse patterned grooves (2) within a group of transverse patterned grooves. And a group of tread blocks (4) formed by adjacent transverse tread grooves (2) and longitudinal tread grooves (3), including inner tread blocks (41) and outer tread blocks (42) distributed circumferentially along the tire tread (1), the inner tread blocks (41) being symmetrically staggered along the circumferential center line of the tire tread (1), and the outer tread blocks (42) being symmetrically staggered along the circumferential center line of the tire tread (1).

2. The tread pattern structure of a medium-to-short-range all-steel radial truck tire according to claim 1, characterized in that, Each of the transverse tread grooves (2) is Z-shaped, with one end located on the circumferential center line of the tire tread (1) and the other end extending to the shoulder portion of the tire tread (1).

3. The tread pattern structure of a medium-to-short-range all-steel radial truck tire according to claim 2, characterized in that, Shoulder grooves (5) are provided on both sides of the transverse tread groove (2) located on the shoulder portion. The shoulder grooves (5) include a first step groove (51), a second step groove (52), and a third step groove (53) connected from top to bottom. The widths of the first step trench (51), the second step trench (52), and the third step trench (53) decrease sequentially from top to bottom.

4. The tread pattern structure of a medium-to-short distance all-steel radial truck tire according to claim 3, characterized in that, The first step trench (51), the second step trench (52), and the third step trench (53) have the same inclination angle on the same side of the trench wall, and different inclination angle on opposite sides of the trench wall. The inclination angles are all 12°~18° inward on one side and 5°~10° inward on the other side.

5. The tread pattern structure of a medium-to-short-range all-steel radial truck tire according to claim 1, characterized in that, The first groove wall (21) of the transverse patterned groove (2) has an inward angle of 12°~18°, the second groove wall (22) has an inward angle of 5°~10°, the first circular arc bottom (23) has a radius of 3-8mm and an arc of 180°, the depth of the transverse patterned groove (2) is 15~20mm, and the surface width is 12-24mm.

6. The tread pattern structure of a medium-to-short-range all-steel radial truck tire according to claim 1, characterized in that, The first arc groove bottom (23) of the transverse patterned groove (2) has several protrusions (231) evenly distributed inside. The height of the protrusion (231) is 2-4 mm, the length is 8-10 mm, and the width is 3-5 mm.

7. The tread pattern structure of a medium-to-short-range all-steel radial truck tire according to claim 1, characterized in that, The first longitudinal groove (31) includes a third groove wall (311) and a fourth groove wall (312) with the same angle, and a second arc groove bottom connected to the third groove wall (311) and the fourth groove wall (312); the third groove wall (311) and the fourth groove wall (312) have the same angle, which is 3°~6° inward; the radius of the second arc groove bottom is 3-8mm, the arc is 180°, the depth of the first longitudinal groove (31) is 8~12mm, and the surface width is 12~24mm; The second longitudinal groove (32) includes a fifth groove wall (321) and a sixth groove wall (322) with the same angle, and a third arc groove bottom connected to the fifth groove wall (321) and the sixth groove wall (322); the fifth groove wall (321) and the sixth groove wall (322) have the same angle, which is 10°~15° inward; the radius of the third arc groove bottom is 4~4.5mm, the arc is 180°, the depth of the second longitudinal groove (32) is 7~10mm, and the surface width is 10~13.5mm.

8. The tread pattern structure of a medium-to-short-range all-steel radial truck tire according to claim 1, characterized in that, The inner pattern block (41) is hexagonal, with the interior angle of the hexagon set to 100°~140°; the outer pattern block (42) is hexagonal, with the interior angle of the hexagon set to 70°~230°.

9. The tread pattern structure of a medium-to-short-range all-steel radial truck tire according to claim 1, characterized in that, The outer patterned block (42) is provided with several heat dissipation holes (421); The tire tread (1) has several heat dissipation vents (11) distributed along the axial direction on the shoulder portion.

10. The tread pattern structure of a medium-to-short-range all-steel radial truck tire according to claim 9, characterized in that, The diameter of the heat dissipation hole (421) decreases uniformly from top to bottom, with a bottom diameter of 2.5 to 3.5 mm and a top diameter of 3.5 to 4.5 mm. The vertical cross-section of the heat dissipation duct (11) is an inverted convex shape, including a first groove (111) and a second groove (112) that are connected from top to bottom. The cross-section of the first groove (111) is elliptical, with a length of 16-18 mm, a width of 10-12 mm, and a depth of 4-5 mm. The cross-section of the second groove (112) is elliptical, with a length of 8-10 mm, a width of 5-6.5 mm, and a depth of 3-4 mm.

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