Tread driving pattern structure of heavy-load all-steel radial tire

Abstract

The utility model relates to a tread driving pattern structure of a heavy-load all-steel radial tire. The tread driving pattern structure comprises a tire tread, the longitudinal pattern grooves are arranged in a staggered manner and comprise longitudinal Z-shaped zigzag main pattern grooves, first longitudinal Z-shaped zigzag pattern grooves and second longitudinal Z-shaped zigzag pattern grooves, the longitudinal Z-shaped zigzag main pattern grooves and the first longitudinal Z-shaped zigzag pattern grooves are opposite in direction, and the first longitudinal Z-shaped zigzag pattern grooves and the second longitudinal Z-shaped zigzag pattern grooves are opposite in direction; the transverse pattern grooves are used for connecting two adjacent longitudinal pattern grooves; the longitudinal pattern grooves and the transverse pattern grooves are encircled to form a plurality of uniformly distributed mahjong block-shaped pattern blocks with hexagonal structures, and three-dimensional transverse wave grooves are formed in the mahjong block-shaped pattern blocks. Compared with the prior art, the tire provided by the utility model has the advantages that the ground pressure distribution is more uniform, the wear resistance is higher, the probability of abnormal wear near the transverse pattern grooves of the tread of the tire is reduced, and strong driving force can be provided for the tire.

Description

Technical Field

[0001] This utility model relates to the field of tire design, and in particular to a tread drive pattern structure for a heavy-duty all-steel radial 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] The main driving routes for heavy-duty all-steel radial drive tires on the market are paved roads and above. The main quality defects of these tires are shoulder gaps, crown gaps, and poor wear resistance. At the same time, these types of drive tires are prone to abnormal wear (resembling fish scale wear) near the lateral tread grooves. The tires have high requirements for tread patterns, and should have low heat generation and good wear resistance, low noise, low rolling resistance, and a novel appearance.

[0005] Patent publication number CN220053403U discloses a tread pattern structure for a light-duty radial tire, including a tire tread with a Z-shaped zigzag groove in the center. Longitudinal zigzag grooves in opposite directions are evenly distributed along the centerline of the tire tread circumferentially to both sides. Transverse ribs are evenly distributed from the main grooves of the longitudinal zigzag grooves towards the crown. The bottom of the ribs adopts a transition design with different slopes, and heat dissipation grooves are distributed on the tire shoulder to improve heat dissipation and prevent shoulder cracking. However, this tread pattern structure makes the area near the transverse tread grooves prone to abnormal wear. Utility Model Content

[0006] The purpose of this invention is to overcome the defects of the prior art, which is that the area near the lateral tread grooves of the tire tread is prone to abnormal wear, and to provide a tread drive pattern structure for heavy-duty all-steel radial tires. This structure makes the ground pressure distribution more uniform, has higher wear resistance, reduces the probability of abnormal wear near the lateral tread grooves, provides the tire with strong driving force, and enhances the rigidity of the tread structure while improving heat dissipation capacity, thus preventing the risk of the tread structure breaking.

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

[0008] A tread pattern structure for a heavy-duty all-steel radial tire includes:

[0009] Tire tread;

[0010] The tire tread has multiple parallel longitudinal tread grooves, including a longitudinal Z-shaped zigzag main tread groove in the center of the tire tread, two first longitudinal Z-shaped zigzag tread grooves and two second longitudinal Z-shaped zigzag tread grooves arranged from near to far from the longitudinal Z-shaped zigzag main tread groove. The longitudinal Z-shaped zigzag main tread groove is in the opposite direction to the first longitudinal Z-shaped zigzag tread groove, and the first longitudinal Z-shaped zigzag tread groove is in the opposite direction to the second longitudinal Z-shaped zigzag tread groove.

[0011] The lateral tread groove provided on the tire tread and connecting two adjacent longitudinal tread grooves includes a first lateral tread groove connecting the longitudinal Z-shaped zigzag main tread groove and the first longitudinal Z-shaped zigzag tread groove, and a second lateral tread groove connecting the first longitudinal Z-shaped zigzag tread groove and the second longitudinal Z-shaped zigzag tread groove.

[0012] And a number of uniformly distributed hexagonal mahjong tile pattern blocks formed by adjacent longitudinal and transverse pattern grooves, wherein the mahjong tile pattern blocks are provided with three-dimensional transverse wave grooves.

[0013] Furthermore, the two first longitudinal Z-shaped zigzag pattern grooves located in the longitudinal Z-shaped zigzag main pattern groove are completely parallel;

[0014] The two second longitudinal Z-shaped zigzag pattern grooves located in the longitudinal Z-shaped zigzag main pattern groove are completely parallel.

[0015] Furthermore, the longitudinal Z-shaped zigzag main pattern groove includes several first bending points and second bending points in opposite directions;

[0016] The first longitudinal Z-shaped zigzag groove includes several third and fourth bend points in opposite directions;

[0017] The second longitudinal Z-shaped zigzag groove includes several fifth and sixth bend points in opposite directions;

[0018] The first, third, and fifth bend points are in the same direction, facing to the left.

[0019] The second, fourth, and sixth bend points are in the same direction, facing to the right.

[0020] The first bend point, the fourth bend point, and the fifth bend point are located on the same circumferential line, and the second bend point, the third bend point, and the sixth bend point are located on the same circumferential line;

[0021] The longitudinal Z-shaped zigzag main pattern groove, the first longitudinal Z-shaped zigzag pattern groove, and the second longitudinal Z-shaped zigzag pattern groove are staggered by a certain distance along the longitudinal direction, so that the straight lines where the first bend point, the fourth bend point, and the fifth bend point are located are inclined along the circumferential line, and the straight lines where the second bend point, the third bend point, and the sixth bend point are located are inclined along the circumferential line.

[0022] Furthermore, the first transverse groove connects the second bend point of the longitudinal Z-shaped zigzag main groove and the third bend point of the first longitudinal Z-shaped zigzag groove.

[0023] The second transverse groove connects the fourth bend of the first longitudinal Z-shaped groove and the fifth bend of the second longitudinal Z-shaped groove.

[0024] Furthermore, the two endpoints of the bottom edge of each hexagonal mahjong tile pattern block are the midpoints of two adjacent hexagonal mahjong tile pattern blocks.

[0025] Furthermore, the two shoulders of the patterned structure are also provided with shoulder heat dissipation grooves that connect with the second longitudinal Z-shaped zigzag pattern groove;

[0026] The shoulder heat dissipation groove is connected to the sixth bend point of the second longitudinal Z-shaped zigzag groove through the third transverse patterned groove, so that the shoulder forms an open shoulder design, which improves the heat dissipation of the shoulder and avoids shoulder cracking.

[0027] Furthermore, the third lateral tread groove is 7-8 mm wide and 22-23 mm deep, with its walls sloping inward at a 2°-5° angle, and its bottom forming a circular arc with a radius of 1-2 mm. The inward sloping walls indicate that the two sides of the third lateral tread groove are close together, and the 2°-5° angle indicates that the angle between the groove wall and the center line of the tire tread is 2°-5°.

[0028] Furthermore, a reinforcing rib is provided in the middle of the third transverse groove. The reinforcing rib is 18-22mm wide and 6-8mm high, which is used to increase the rigidity of the shoulder.

[0029] Furthermore, the three-dimensional transverse wave groove includes:

[0030] A first three-dimensional transverse wave groove connecting the first bending point of the longitudinal Z-shaped tortuous main pattern groove and the fourth bending point of the first longitudinal Z-shaped tortuous pattern groove;

[0031] A second three-dimensional transverse wave groove connecting the third bend point of the first longitudinal Z-shaped zigzag groove and the sixth bend point of the second longitudinal Z-shaped zigzag groove.

[0032] And the fifth bend point connecting the second longitudinal Z-shaped zigzag groove and the third three-dimensional lateral wave groove on the tire tread shoulder.

[0033] Furthermore, the upper and lower peaks of the three-dimensional transverse wave groove are 2-5 mm apart in the longitudinal direction, and they are wave-shaped in both the transverse and longitudinal directions. The transverse waves and longitudinal waves intersect each other to form a wave surface with alternating heights.

[0034] The three-dimensional transverse wave grooves provide a powerful driving force while ensuring the rigidity of the mahjong tile patterned blocks, preventing the risk of the mahjong tile patterned blocks breaking apart.

[0035] Furthermore, each longitudinal tread groove, transverse tread groove, and three-dimensional transverse wave groove has multiple vent holes that penetrate the mold, which facilitates venting during vulcanization, prevents air pockets from causing tread corners and sidewall defects, promotes rubber flow, and makes the rubber vulcanization more uniform.

[0036] Furthermore, the longitudinal Z-shaped zigzag main pattern groove, the first longitudinal Z-shaped zigzag pattern groove, and the second longitudinal Z-shaped zigzag pattern groove have a groove width of 6~7mm, a groove depth of 22~23mm, a groove wall that slopes inward at 2°~5°, and a groove bottom that is a circular arc transition with a radius of 1~2mm.

[0037] The first and second transverse patterned grooves are 7-8 mm wide and 18-22 mm deep, with the groove walls sloping downwards at 2°-5° and the bottom of the grooves being a circular arc transition with a radius of 2-3 mm.

[0038] Furthermore, the tire tread is composed of ten equal movable sections; the tread pitch is 52 sections, distributed in an equal pitch pattern.

[0039] Furthermore, the edges of the mahjong tile-shaped patterned blocks adjacent to the shoulder are straight edges.

[0040] Compared with the prior art, the present invention has the following advantages:

[0041] (1) This utility model has good wear resistance, can reduce abnormal wear, and ensure uniform wear. The tire with the tread structure of this utility model reduces the probability of early tire damage caused by shoulder gaps, crown gaps, and poor wear resistance, while providing strong driving force for the tire. Since the tread structure is arranged in a regular pattern, it does not effectively reduce the noise that occurs during tire driving.

[0042] (2) The combination design of the longitudinal and lateral tread grooves enables the tire to have good guidance, drainage, grip and anti-skid performance at high speeds. In addition, the constantly changing tread groove angle improves the tire's traction and lateral force.

[0043] (3) The pattern of this utility model adopts a combination design of longitudinal Z-shaped zigzag main pattern groove, first longitudinal Z-shaped zigzag pattern groove, second longitudinal Z-shaped zigzag pattern groove and first transverse pattern groove, second transverse pattern groove and third transverse pattern groove to form a number of evenly distributed hexagonal structure mahjong block pattern blocks. The shoulder is an open shoulder design, which can provide strong driving force. The reasonable pattern arrangement ensures uniform wear, effectively prevents uneven wear, improves tire wear resistance, and reduces the probability of early tire damage caused by shoulder gap, crown gap and poor wear resistance.

[0044] (4) By setting three-dimensional transverse wave grooves in the mahjong tile pattern block, this utility model can effectively provide a strong driving force, increase the heat dissipation capacity of the mahjong tile pattern block, and ensure the rigidity of the mahjong tile pattern block, thus preventing the risk of the mahjong tile pattern block breaking apart. At the same time, under the premise of ensuring the rigidity of the mahjong tile pattern block, it can reduce the deformation of the mahjong tile pattern block as it rolls back and forth with the tire, thereby reducing the probability of abnormal wear (similar to fish scale wear) near the transverse tread grooves of the tire. Attached Figure Description

[0045] Figure 1 This is a schematic diagram of one pitch of the pattern structure shown in Example 1;

[0046] Figure 2 This is a rendering of the three-dimensional transverse wave groove shown in Example 2;

[0047] Figure 3 for Figure 2 Enlarged diagram of A in the middle;

[0048] Figure 4 This is a schematic diagram of the pattern structure shown in Example 2.

[0049] Explanation of markings in the diagram:

[0050] 1- Tire tread;

[0051] 2-Longitudinal patterned groove, 21-Longitudinal Z-shaped zigzag main patterned groove, 211-First bending point, 212-Second bending point, 22-First longitudinal Z-shaped zigzag patterned groove, 221-Third bending point, 222-Fourth bending point, 23-Second longitudinal Z-shaped zigzag patterned groove, 231-Fifth bending point, 232-Sixth bending point;

[0052] 3- Horizontal pattern groove, 31- First horizontal pattern groove, 32- Second horizontal pattern groove, 33- Third horizontal pattern groove;

[0053] 4-Mahjong tile-shaped pattern blocks;

[0054] 5- Shoulder ventilation grooves;

[0055] 6-Three-dimensional transverse wave groove, 61-First three-dimensional transverse wave groove, 62-Second three-dimensional transverse wave groove, 63-Third three-dimensional transverse wave groove;

[0056] 7-Exhaust port. Detailed Implementation

[0057] 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.

[0058] 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.

[0059] 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.

[0060] Example 1

[0061] A tread pattern structure for heavy-duty all-steel radial tires, such as Figure 1 As shown, it includes:

[0062] Tire tread 1;

[0063] Multiple longitudinal tread grooves 2 arranged side by side on the tire tread 1 include a longitudinal Z-shaped zigzag main tread groove 21 arranged in the center of the tire tread 1, two first longitudinal Z-shaped zigzag tread grooves 22 and two second longitudinal Z-shaped zigzag tread grooves 23 arranged from near to far on the longitudinal Z-shaped zigzag main tread groove 21. The longitudinal Z-shaped zigzag main tread groove 21 is in the opposite direction to the first longitudinal Z-shaped zigzag tread groove 22, and the first longitudinal Z-shaped zigzag tread groove 22 is in the opposite direction to the second longitudinal Z-shaped zigzag tread groove 23.

[0064] The transverse tread groove 3 provided on the tire tread 1 and connecting two adjacent longitudinal tread grooves 2 includes a first transverse tread groove 31 connecting the longitudinal Z-shaped zigzag main tread groove 21 and the first longitudinal Z-shaped zigzag tread groove 22, and a second transverse tread groove 32 connecting the first longitudinal Z-shaped zigzag tread groove 22 and the second longitudinal Z-shaped zigzag tread groove 23.

[0065] And a number of uniformly distributed hexagonal mahjong tile pattern blocks 4 formed by adjacent longitudinal pattern grooves 2 and adjacent transverse pattern grooves 3, wherein the mahjong tile pattern blocks 4 are provided with three-dimensional transverse wave grooves 6.

[0066] In this embodiment, the two first longitudinal Z-shaped zigzag pattern grooves 22 located in the longitudinal Z-shaped zigzag main pattern groove 21 are completely parallel;

[0067] The two second longitudinal Z-shaped zigzag pattern grooves 23 located on the longitudinal Z-shaped zigzag main pattern groove 21 are completely parallel.

[0068] In this embodiment, the longitudinal Z-shaped zigzag main pattern groove 21 includes several first bending points 211 and second bending points 212 in opposite directions;

[0069] The first longitudinal Z-shaped zigzag groove 22 includes several third bend points 221 and fourth bend points 222 in opposite directions;

[0070] The second longitudinal Z-shaped zigzag groove 23 includes several fifth bending points 231 and sixth bending points 232 in opposite directions;

[0071] The first bend point 211, the third bend point 221, and the fifth bend point 231 are in the same direction, facing to the left.

[0072] The second bend point 212, the fourth bend point 222, and the sixth bend point 232 are in the same direction, facing to the right.

[0073] The first bend point 211, the fourth bend point 222, and the fifth bend point 231 are located on the same circumferential line, and the second bend point 212, the third bend point 221, and the sixth bend point 232 are located on the same circumferential line;

[0074] The longitudinal Z-shaped zigzag main pattern groove 21, the first longitudinal Z-shaped zigzag pattern groove 22, and the second longitudinal Z-shaped zigzag pattern groove 23 are staggered by a certain distance along the longitudinal direction, so that the straight line where the first bending point 211, the fourth bending point 222, and the fifth bending point 231 are located is inclined along the circumferential line, and the straight line where the second bending point 212, the third bending point 221, and the sixth bending point 232 are located is inclined along the circumferential line.

[0075] In this embodiment, the first transverse groove 31 connects the second bending point 212 of the longitudinal Z-shaped zigzag main groove 21 and the third bending point 221 of the first longitudinal Z-shaped zigzag groove 22.

[0076] The second transverse groove 32 connects the fourth bend point 222 of the first longitudinal Z-shaped zigzag groove 22 and the fifth bend point 231 of the second longitudinal Z-shaped zigzag groove 23.

[0077] In this embodiment, the two shoulder sections of the pattern structure are also provided with shoulder heat dissipation grooves 5 that are connected to the second longitudinal Z-shaped zigzag pattern groove 23;

[0078] The shoulder heat dissipation groove 5 is connected to the sixth bending point 232 of the second longitudinal Z-shaped zigzag groove 23 through the third transverse patterned groove 33, so that the shoulder forms an open shoulder design, which improves the heat dissipation of the shoulder and avoids shoulder cracking.

[0079] In this embodiment, the third transverse patterned groove 33 has a groove width of 7.5 mm, a groove depth of 22.6 mm, a groove wall that slopes inward at 4°, and a groove bottom that is a circular arc transition with a radius of 1.5 mm.

[0080] In this embodiment, as Figure 2 and 3 As shown, the three-dimensional transverse wave groove 6 includes:

[0081] A first three-dimensional transverse wave groove 61 connecting the first bending point 211 of the longitudinal Z-shaped zigzag main pattern groove 21 and the fourth bending point 222 of the first longitudinal Z-shaped zigzag pattern groove 22;

[0082] A second three-dimensional transverse wave groove 62 connecting the third bend point 221 of the first longitudinal Z-shaped zigzag groove 22 and the sixth bend point 232 of the second longitudinal Z-shaped zigzag groove 23;

[0083] And the fifth bend point 231 connecting the second longitudinal Z-shaped zigzag groove 23 and the third three-dimensional lateral wave groove 63 on the shoulder of the tire tread 1.

[0084] In this embodiment, the upper and lower peaks of the three-dimensional transverse wave groove 6 are 3mm apart in the longitudinal direction, and they are wave-shaped in both the transverse and longitudinal directions. The transverse waves and the longitudinal waves intersect each other to form a wave surface with alternating heights.

[0085] The three-dimensional transverse wave groove 6 provides a strong driving force while ensuring the rigidity of the mahjong tile pattern block 4, preventing the risk of the mahjong tile pattern block 4 breaking apart.

[0086] In this embodiment, the longitudinal Z-shaped zigzag main pattern groove 21, the first longitudinal Z-shaped zigzag pattern groove 22, and the second longitudinal Z-shaped zigzag pattern groove 23 have a groove width of 6.5 mm, a groove depth of 22.6 mm, a groove wall that slopes inward at 3°, and a groove bottom that is a circular arc transition with a radius of 1.5 mm.

[0087] The first transverse groove 31 and the second transverse groove 32 have a groove width of 7.5 mm and a groove depth of 20 mm. The groove walls are inclined downward at 4°, and the bottom of the groove is a circular arc transition with a radius of 2.5 mm.

[0088] In this embodiment, the tire tread 1 is composed of ten equal movable molds; the tread pitch is 52 segments, which are distributed in an equal pitch.

[0089] In this embodiment, the edge of the mahjong tile pattern block 4 adjacent to the shoulder is a straight edge.

[0090] Example 2

[0091] A tread pattern structure for heavy-duty all-steel radial tires, such as Figure 4 As shown, it includes:

[0092] Tire tread 1;

[0093] Multiple longitudinal tread grooves 2 arranged side by side on the tire tread 1 include a longitudinal Z-shaped zigzag main tread groove 21 arranged in the center of the tire tread 1, two first longitudinal Z-shaped zigzag tread grooves 22 and two second longitudinal Z-shaped zigzag tread grooves 23 arranged from near to far on the longitudinal Z-shaped zigzag main tread groove 21. The longitudinal Z-shaped zigzag main tread groove 21 is in the opposite direction to the first longitudinal Z-shaped zigzag tread groove 22, and the first longitudinal Z-shaped zigzag tread groove 22 is in the opposite direction to the second longitudinal Z-shaped zigzag tread groove 23.

[0094] The transverse tread groove 3 provided on the tire tread 1 and connecting two adjacent longitudinal tread grooves 2 includes a first transverse tread groove 31 connecting the longitudinal Z-shaped zigzag main tread groove 21 and the first longitudinal Z-shaped zigzag tread groove 22, and a second transverse tread groove 32 connecting the first longitudinal Z-shaped zigzag tread groove 22 and the second longitudinal Z-shaped zigzag tread groove 23.

[0095] And a number of uniformly distributed hexagonal mahjong tile pattern blocks 4 formed by adjacent longitudinal pattern grooves 2 and adjacent transverse pattern grooves 3, wherein the mahjong tile pattern blocks 4 are provided with three-dimensional transverse wave grooves 6.

[0096] In this embodiment, the two first longitudinal Z-shaped zigzag pattern grooves 22 located in the longitudinal Z-shaped zigzag main pattern groove 21 are completely parallel;

[0097] The two second longitudinal Z-shaped zigzag pattern grooves 23 located on the longitudinal Z-shaped zigzag main pattern groove 21 are completely parallel.

[0098] In this embodiment, the longitudinal Z-shaped zigzag main pattern groove 21 includes several first bending points 211 and second bending points 212 in opposite directions;

[0099] The first longitudinal Z-shaped zigzag groove 22 includes several third bend points 221 and fourth bend points 222 in opposite directions;

[0100] The second longitudinal Z-shaped zigzag groove 23 includes several fifth bending points 231 and sixth bending points 232 in opposite directions;

[0101] The first bend point 211, the third bend point 221, and the fifth bend point 231 are in the same direction, facing to the left.

[0102] The second bend point 212, the fourth bend point 222, and the sixth bend point 232 are in the same direction, facing to the right.

[0103] The first bend point 211, the fourth bend point 222, and the fifth bend point 231 are located on the same circumferential line, and the second bend point 212, the third bend point 221, and the sixth bend point 232 are located on the same circumferential line;

[0104] The longitudinal Z-shaped zigzag main pattern groove 21, the first longitudinal Z-shaped zigzag pattern groove 22, and the second longitudinal Z-shaped zigzag pattern groove 23 are staggered by a certain distance along the longitudinal direction, so that the straight line where the first bending point 211, the fourth bending point 222, and the fifth bending point 231 are located is inclined along the circumferential line, and the straight line where the second bending point 212, the third bending point 221, and the sixth bending point 232 are located is inclined along the circumferential line.

[0105] In this embodiment, the first transverse groove 31 connects the second bending point 212 of the longitudinal Z-shaped zigzag main groove 21 and the third bending point 221 of the first longitudinal Z-shaped zigzag groove 22.

[0106] The second transverse groove 32 connects the fourth bend point 222 of the first longitudinal Z-shaped zigzag groove 22 and the fifth bend point 231 of the second longitudinal Z-shaped zigzag groove 23.

[0107] In this embodiment, the two shoulder sections of the pattern structure are also provided with shoulder heat dissipation grooves 5 that are connected to the second longitudinal Z-shaped zigzag pattern groove 23;

[0108] The shoulder heat dissipation groove 5 is connected to the sixth bending point 232 of the second longitudinal Z-shaped zigzag groove 23 through the third transverse patterned groove 33, so that the shoulder forms an open shoulder design, which improves the heat dissipation of the shoulder and avoids shoulder cracking.

[0109] In this embodiment, the third transverse patterned groove 33 has a groove width of 7.5 mm, a groove depth of 22.6 mm, a groove wall that slopes inward at 4°, and a groove bottom that is a circular arc transition with a radius of 1.5 mm.

[0110] In this embodiment, a reinforcing rib is provided in the middle of the third transverse groove 33. The reinforcing rib is 20mm wide and 7.6mm high, which is used to increase the rigidity of the shoulder.

[0111] In this embodiment, the three-dimensional transverse wave groove 6 includes:

[0112] A first three-dimensional transverse wave groove 61 connecting the first bending point 211 of the longitudinal Z-shaped zigzag main pattern groove 21 and the fourth bending point 222 of the first longitudinal Z-shaped zigzag pattern groove 22;

[0113] A second three-dimensional transverse wave groove 62 connecting the third bend point 221 of the first longitudinal Z-shaped zigzag groove 22 and the sixth bend point 232 of the second longitudinal Z-shaped zigzag groove 23;

[0114] And the fifth bend point 231 connecting the second longitudinal Z-shaped zigzag groove 23 and the third three-dimensional lateral wave groove 63 on the shoulder of the tire tread 1.

[0115] In this embodiment, the upper and lower peaks of the three-dimensional transverse wave groove 6 are 3mm apart in the longitudinal direction, and they are wave-shaped in both the transverse and longitudinal directions. The transverse waves and the longitudinal waves intersect each other to form a wave surface with alternating heights.

[0116] The three-dimensional transverse wave groove 6 provides a strong driving force while ensuring the rigidity of the mahjong tile pattern block 4, preventing the risk of the mahjong tile pattern block 4 breaking apart.

[0117] In this embodiment, each longitudinal tread groove 2, transverse tread groove 3, and three-dimensional transverse wave groove 6 is surrounded by multiple vent holes 7 that penetrate the mold. This facilitates venting during vulcanization, prevents air pockets from causing tread rounded corners and missing rubber on the tire sidewall, promotes rubber flow, and makes the rubber vulcanization more uniform.

[0118] In this embodiment, the longitudinal Z-shaped zigzag main pattern groove 21, the first longitudinal Z-shaped zigzag pattern groove 22, and the second longitudinal Z-shaped zigzag pattern groove 23 have a groove width of 6.5 mm, a groove depth of 22.6 mm, a groove wall that slopes inward at 3°, and a groove bottom that is a circular arc transition with a radius of 1.5 mm.

[0119] The first transverse groove 31 and the second transverse groove 32 have a groove width of 7.5 mm and a groove depth of 20 mm. The groove walls are inclined downward at 4°, and the bottom of the groove is a circular arc transition with a radius of 2.5 mm.

[0120] In this embodiment, the tire tread 1 is composed of ten equal movable molds; the tread pitch is 52 segments, which are distributed in an equal pitch.

[0121] In this embodiment, the edge of the mahjong tile pattern block 4 adjacent to the shoulder is a straight edge.

[0122] The tire tread structure of this embodiment results in a more uniform distribution of ground pressure, and the rational tread design effectively prevents uneven wear and improves tire wear resistance. This new tread pattern offers high wear resistance, reducing the likelihood of premature tire damage caused by shoulder gaps, crown gaps, and poor wear resistance. It also provides strong traction and enhances the rigidity of the tread blocks while improving their heat dissipation capacity, preventing breakage. Furthermore, while maintaining the rigidity of the tread blocks, it reduces the deformation caused by the creeping motion of the blocks as the tire rolls, thereby decreasing the probability of abnormal wear (resembling fish scale wear) near the lateral tread grooves.

[0123] Comparative Example 1

[0124] Compared with Example 2, most of the components are the same, except that the three-dimensional lateral wave groove 6 is not provided, and the resulting tire driving force is worse than that of Example 2.

[0125] Comparative Example 2

[0126] Compared to Example 2, most aspects are the same, except that the three-dimensional transverse wavy groove 6 is replaced with a transverse fine groove. However, straightening the transverse fine groove would reduce the rigidity of the mahjong tile pattern blocks, thus leading to abnormal wear.

[0127] 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 tread pattern structure for a heavy-duty all-steel radial tire, characterized in that, include: Tire tread (1); Multiple longitudinal tread grooves (2) arranged side by side on the tire tread (1) include a longitudinal Z-shaped zigzag main tread groove (21) arranged in the center of the tire tread (1), two first longitudinal Z-shaped zigzag tread grooves (22) and two second longitudinal Z-shaped zigzag tread grooves (23) arranged from near to far on the longitudinal Z-shaped zigzag main tread groove (21), the longitudinal Z-shaped zigzag main tread groove (21) is in the opposite direction to the first longitudinal Z-shaped zigzag tread groove (22), and the first longitudinal Z-shaped zigzag tread grooves (22) are in the opposite direction to the second longitudinal Z-shaped zigzag tread grooves (23); The transverse tread groove (3) provided on the tire tread (1) and connecting two adjacent longitudinal tread grooves (2) includes a first transverse tread groove (31) connecting the longitudinal Z-shaped zigzag main tread groove (21) and the first longitudinal Z-shaped zigzag tread groove (22), and a second transverse tread groove (32) connecting the first longitudinal Z-shaped zigzag tread groove (22) and the second longitudinal Z-shaped zigzag tread groove (23); And a number of uniformly distributed hexagonal mahjong block-shaped patterned blocks (4) surrounded by adjacent longitudinal patterned grooves (2) and adjacent transverse patterned grooves (3), wherein the mahjong block-shaped patterned blocks (4) are provided with three-dimensional transverse wave grooves (6).

2. The tread pattern structure for a heavy-duty all-steel radial tire according to claim 1, characterized in that, The two first longitudinal Z-shaped zigzag pattern grooves (22) located in the longitudinal Z-shaped zigzag main pattern groove (21) are completely parallel; The two second longitudinal Z-shaped zigzag pattern grooves (23) located in the longitudinal Z-shaped zigzag main pattern groove (21) are completely parallel.

3. The tread pattern structure for a heavy-duty all-steel radial tire according to claim 1, characterized in that, The longitudinal Z-shaped tortuous main pattern groove (21) includes several first bending points (211) and second bending points (212) in opposite directions; The first longitudinal Z-shaped zigzag groove (22) includes several third bend points (221) and fourth bend points (222) in opposite directions; The second longitudinal Z-shaped zigzag groove (23) includes several fifth bend points (231) and sixth bend points (232) in opposite directions; The first bend point (211), the third bend point (221), and the fifth bend point (231) are in the same direction, facing to the left. The second bend point (212), the fourth bend point (222), and the sixth bend point (232) are in the same direction, facing to the right; The first bend point (211), the fourth bend point (222), and the fifth bend point (231) are located on the same circumferential line, and the second bend point (212), the third bend point (221), and the sixth bend point (232) are located on the same circumferential line; The longitudinal Z-shaped zigzag main pattern groove (21), the first longitudinal Z-shaped zigzag pattern groove (22), and the second longitudinal Z-shaped zigzag pattern groove (23) are staggered by a certain distance in the longitudinal direction, so that the straight line where the first bending point (211), the fourth bending point (222), and the fifth bending point (231) are located is inclined along the circumferential line, and the straight line where the second bending point (212), the third bending point (221), and the sixth bending point (232) are located is inclined along the circumferential line.

4. The tread pattern structure for a heavy-duty all-steel radial tire according to claim 3, characterized in that, The first transverse pattern groove (31) connects the second bend point (212) of the longitudinal Z-shaped zigzag main pattern groove (21) and the third bend point (221) of the first longitudinal Z-shaped zigzag pattern groove (22); The second transverse groove (32) connects the fourth bend point (222) of the first longitudinal Z-shaped zigzag groove (22) and the fifth bend point (231) of the second longitudinal Z-shaped zigzag groove (23).

5. The tread pattern structure for a heavy-duty all-steel radial tire according to claim 3, characterized in that, The two sides of the patterned structure are also provided with shoulder heat dissipation grooves (5) that are connected to the second longitudinal Z-shaped zigzag pattern groove (23); The shoulder heat dissipation groove (5) is connected to the sixth bend point (232) of the second longitudinal Z-shaped zigzag groove (23) through the third transverse patterned groove (33).

6. The tread pattern structure for a heavy-duty all-steel radial tire according to claim 5, characterized in that, The third transverse patterned groove (33) has a width of 7-8 mm, a depth of 22-23 mm, a groove wall that slopes inward at 2-5°, and a bottom that is a circular arc transition with a radius of 1-2 mm. The third transverse groove (33) is provided with a reinforcing rib in the middle, the reinforcing rib being 18-22mm wide and 6-8mm high.

7. The tread pattern structure for a heavy-duty all-steel radial tire according to claim 2, characterized in that, The three-dimensional transverse wave groove (6) includes: A first three-dimensional transverse wave groove (61) connecting the first bending point (211) of the longitudinal Z-shaped zigzag main pattern groove (21) and the fourth bending point (222) of the first longitudinal Z-shaped zigzag pattern groove (22); The second three-dimensional transverse wave groove (62) connects the third bend point (221) of the first longitudinal Z-shaped zigzag groove (22) and the sixth bend point (232) of the second longitudinal Z-shaped zigzag groove (23); And the fifth bend point (231) connecting the second longitudinal Z-shaped zigzag groove (23) and the third three-dimensional lateral wave groove (63) on the shoulder of the tire tread (1).

8. The tread pattern structure for a heavy-duty all-steel radial tire according to claim 7, characterized in that, The upper and lower peaks of the three-dimensional transverse wave groove (6) are 2-5 mm apart in the longitudinal direction. They are wave-shaped in both the transverse and longitudinal directions. The transverse waves and the longitudinal waves intersect each other to form a wave surface with alternating high and low peaks.

9. The tread pattern structure for a heavy-duty all-steel radial tire according to claim 7, characterized in that, Each longitudinal pattern groove (2), transverse pattern groove (3), and three-dimensional transverse wave groove (6) has multiple vent holes (7) that penetrate the mold.

10. The tread pattern structure for a heavy-duty all-steel radial tire according to claim 1, characterized in that, The longitudinal Z-shaped zigzag main pattern groove (21), the first longitudinal Z-shaped zigzag pattern groove (22), and the second longitudinal Z-shaped zigzag pattern groove (23) have a groove width of 6-7 mm, a groove depth of 22-23 mm, a groove wall that slopes inward at 2°-5°, and a groove bottom that is a circular arc transition with a radius of 1-2 mm. The first transverse patterned groove (31) and the second transverse patterned groove (32) have a groove width of 7-8 mm and a groove depth of 18-21 mm. The groove wall is inclined inward at 2°-5° and the bottom of the groove is a circular arc transition with a radius of 2-3 mm.

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