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

Abstract

The utility model relates to a tread pattern structure of a medium-short distance all-steel truck radial tire, which is characterized in that three rows of Z-shaped zigzag grooves in the same direction are distributed on a tire tread along the circumferential direction of the tire tread, and main pattern blocks with irregular pentagonal structures are distributed between the adjacent Z-shaped zigzag grooves to form two rows of blocky pattern columns; an inclined shallow groove is formed between every two adjacent main pattern blocks in each row. And the main pattern blocks in the block-shaped pattern columns on the two sides of the central zigzag groove are reversely arranged in a staggered manner along the circumferential direction. A plurality of stone discharging blocks are arranged at the bottom of the Z-shaped zigzag ditch in the extending direction of the Z-shaped zigzag ditch, and the stone discharging blocks comprise main stone discharging blocks and auxiliary stone discharging blocks which are sequentially and alternately connected. A plurality of knife-shaped shallow grooves are evenly distributed in the shoulder portions of the tire tread, a plurality of block-shaped heat dissipation square grooves are evenly distributed below the two shoulder portions of the tire tread, and a plurality of exhaust holes are evenly distributed in the peripheries of the main pattern blocks. Compared with the prior art, the tire tread pattern structure disclosed by the utility model has the advantages of low rolling resistance, strong road holding force, good stone discharging performance and the like.

Description

Technical Field

[0001] This utility model relates to the field of tire 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 mounted on 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.

[0003] Tire tread designs come in a variety of styles, tailored to different uses and road conditions. Tire tread plays a crucial role in the overall driving experience. 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] Tire tread patterns are broadly categorized into straight groove patterns, lateral groove patterns, longitudinal and transverse groove patterns, and block patterns. Straight groove patterns, also known as standard tread patterns, are primarily longitudinal grooves, offering excellent handling stability, low rotational resistance, low noise, and particularly excellent water drainage. They are also less prone to lateral slippage and are suitable for vehicles traveling on flat roads. Lateral groove patterns offer excellent driving, braking, and traction, along with good wear resistance, making them suitable for harsh road conditions such as gravel roads. They are commonly used in industrial and short-to-medium distance vehicles such as bulldozers, excavators, and loaders. Longitudinal and transverse groove patterns combine the designs of straight and lateral grooves, suitable for rough roads but prone to abnormal wear. Block patterns feature regularly arranged blocks, providing good driving and braking forces, suitable for snow and muddy roads, but with poor wear resistance and a short mileage life.

[0005] The main short-to-medium distance all-steel radial truck tires on the market are designed for use on paved roads and are primarily suitable for short-to-medium distance transportation on national highways, provincial highways, and other paved or mixed-hardened roads. The main quality defects of these tires are shoulder gaps, crown gaps, and poor wear resistance. These tires require high-quality tread patterns and need to maintain good steering, drainage, grip, and anti-skid performance at high speeds. Shoulder gaps (delamination or cracking in the tire shoulder area) are mainly caused by stress concentration and high-temperature aging, commonly seen in heavy-load, frequent steering, or poor heat dissipation conditions. Crown gaps (delamination in the tire crown area) are often caused by excessive local impact loads or stones embedding and damaging the belt layer. Poor wear resistance stems from uneven ground pressure distribution or abnormal wear (such as stone scratches or localized overheating softening).

[0006] CN222179117U discloses a tread pattern structure for a light-duty radial tire. The tire tread features a central longitudinal tread block, and along the centerline of the tread circumferentially extending to both sides, evenly distributed longitudinal straight grooves, longitudinal zigzag grooves, and longitudinal tread blocks in the same direction. The groove bottoms employ a rounded transition design, and heat dissipation shoulder grooves are distributed on the tire shoulder to improve heat dissipation and prevent shoulder cracking. However, this tread pattern structure still cannot meet the requirements for stone removal during driving. Stones easily get stuck in the bottom of the tread grooves, causing cracks in the groove bottoms, thus affecting tire driving safety.

[0007] Therefore, there is an urgent need to provide a new type of tread pattern structure for medium- and short-distance all-steel radial truck tires with good stone removal performance. Utility Model Content

[0008] The purpose of this invention is to provide a tread pattern structure for a medium-to-short-range all-steel radial truck tire, addressing at least one of the aforementioned problems. Through the combination of longitudinal and lateral tread patterns, the tire achieves excellent guidance, drainage, grip, and anti-skid performance at high speeds. The continuously changing tread groove angles enhance the tire's traction and lateral force, while the alternating stone-removing design further improves stone-removing performance and enhances vehicle driving safety.

[0009] The objective of this utility model can be achieved through the following technical solutions:

[0010] This utility model provides a tread pattern structure for a medium-to-short distance all-steel radial truck tire, including a tire tread, which is composed of nine equal parts of movable mold;

[0011] The tire tread has three rows of Z-shaped grooves in the same direction distributed along its circumference. Irregular pentagonal main pattern blocks are distributed between adjacent Z-shaped grooves to form two rows of block pattern blocks. Each row of adjacent main pattern blocks is provided with a shallow oblique groove.

[0012] The Z-shaped zigzag groove includes a central zigzag groove and side zigzag grooves equally spaced on both sides of the central zigzag groove. The main pattern blocks in the block pattern rows on both sides of the central zigzag groove are arranged in opposite directions along the circumferential direction.

[0013] The bottom of the Z-shaped meandering ditch is provided with several rows of stones along its extension direction; the rows of stones include main rows of stones and auxiliary rows of stones that are connected alternately in sequence;

[0014] The tire tread has several knife-shaped shallow grooves evenly distributed on the shoulder, several block-shaped heat dissipation grooves evenly distributed under the two shoulders of the tire tread, and several exhaust holes evenly distributed around the main tread blocks.

[0015] Furthermore, the width of the Z-shaped zigzag groove is 13-17mm, and the depth is 13-17mm.

[0016] Furthermore, the Z-shaped zigzag groove descends in a funnel shape in the vertical direction, and the bottom transition of the Z-shaped zigzag groove is a circular arc transition with a radius of 1.5-2.5mm.

[0017] Furthermore, the Z-shaped zigzag trench includes a central zigzag trench and side zigzag trenches equally spaced on both sides of the central zigzag trench.

[0018] Furthermore, the main pattern blocks in the block pattern rows on both sides of the central zigzag groove are arranged in opposite directions along the circumferential direction.

[0019] Furthermore, all five corners of the main pattern block are rounded, and two of the corners of the main pattern block are adapted to the shape of the bent part of the Z-shaped groove.

[0020] Furthermore, the radius of the arc at the five corners of the main pattern block ranges from 2 to 10 mm.

[0021] Furthermore, the oblique shallow grooves are evenly distributed along the tire circumferential direction.

[0022] Furthermore, the width of the inclined shallow trench is 3.5-4.5 mm and the depth is 4.5-5.5 mm.

[0023] Furthermore, the sloping shallow ditch has a vertical downward depth, with a circular arc transition at the bottom of the ditch with a radius of 0.8-1.2mm, a circular arc transition at the transition between the upper and lower ends with a radius of 0.4-0.6mm, and a right angle transition at the outer corner.

[0024] Furthermore, the transition point between the sloping shallow ditch and the Z-shaped bends on the left and right sides is inclined downwards, with the angle between the sloping shallow ditch and the horizontal ditch surface being 100-105° downwards.

[0025] Furthermore, the main row of stones has a length of 8-12mm, a width of 2.5-3.5mm, and a height of 2.2-2.8mm.

[0026] Furthermore, the auxiliary stone block has a length of 4.5-6mm, a width of 0.6-1mm, and a height equal to that of the main stone block.

[0027] Furthermore, the width of the knife-shaped shallow groove is 3-5mm, the depth is 4-6mm, and the bottom of the groove is a circular arc transition with a radius of 0.8-1.2mm.

[0028] Furthermore, the junction between the knife-shaped shallow groove and the Z-shaped zigzag groove is inclined downwards, and the angle between the groove and the horizontal groove surface is 100-105° inclined downwards.

[0029] Furthermore, the long side of the block-shaped heat dissipation trench is 22-30mm, the short side is 10-12mm, and the trench depth is 2.5-3.5mm.

[0030] Furthermore, the transition points of the block-shaped heat dissipation trenches all adopt a circular arc transition with a radius of 1.8-2.2mm, and the bottom of the trench adopts a circular arc transition with a radius of 1.8-2.2mm.

[0031] Furthermore, the diameter of the vent hole is 0.6-1mm.

[0032] Furthermore, the Z-shaped groove has wear indicator protrusions that are 2-3 mm higher than the bottom of the groove, evenly distributed in six equal parts along its circumference.

[0033] Furthermore, the width of the wear indicator boss is the same as the width of the Z-shaped groove, and the length is 8-12mm. The center of the wear indicator boss is a hollow circular hole with a diameter of 2.5-3.5mm.

[0034] Compared with the prior art, the present invention has the following beneficial effects:

[0035] (1) The tire tread structure of this utility model improves the tire's traction, lateral force and drainage and exhaust effect by setting three rows of Z-shaped zigzag main grooves and lateral front grooves, and reduces rolling resistance; the two rows of main tread blocks arranged in opposite directions can effectively increase the tire's grip; and by forming an effective stone removal path at the bottom of the Z-shaped zigzag groove, it can effectively avoid stones getting stuck at the bottom of the groove, prevent the bottom of the groove from cracking, and improve the vehicle's driving safety.

[0036] (2) In this utility model, two rows of pentagonal main pattern blocks are evenly distributed between the zigzag grooves. The pattern blocks have multiple shallow diagonal grooves evenly distributed along the circumference of the tire tread, providing the tire with excellent traction and braking performance. The two rows of pattern blocks are staggered in the same direction along the circumferential distance, which makes the overall shape beautiful and increases the tire's grip.

[0037] (3) The tread pattern of this utility model has low rolling resistance, saves fuel, and the regularly arranged tread pattern can also reduce noise during driving. The large-area closed shoulder design can improve the rigidity of the shoulder tread strips, effectively prevent uneven wear, and is suitable for road conditions such as highways, national highways, and provincial highways. Attached Figure Description

[0038] Figure 1 This is a schematic diagram of the tire tread structure of this utility model.

[0039] Figure 2 This is a schematic diagram of the tire tread pattern structure of a single pitch according to the present invention.

[0040] Explanation of markings in the diagram:

[0041] 1- Tire tread;

[0042] 2-Z-shaped zigzag trench, 21-central zigzag trench, 22-side zigzag trench;

[0043] 3-Main pattern blocks;

[0044] 4-Sloping shallow trench;

[0045] 5-Row of stones, 51-Main row of stones, 52-Auxiliary row of stones;

[0046] 6-Knife-shaped shallow groove;

[0047] 7- Block-shaped heat dissipation trench;

[0048] 8-Exhaust port;

[0049] 9-Wearing indicator boss. Detailed Implementation

[0050] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. This embodiment is based on the technical solution of the present invention and provides detailed implementation methods and specific operating procedures; however, the scope of protection of the present invention is not limited to the following embodiments.

[0051] In this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and 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, and therefore should not be construed as a limitation of this utility model; the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; furthermore, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly, for example, they can be fixed connections, detachable connections, or integral connections; they can be mechanical connections or electrical connections; they can be direct connections or indirect connections through an intermediate medium; they can be internal connections between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0052] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0053] Example 1:

[0054] This embodiment provides a tread pattern structure for a medium-to-short distance all-steel radial truck tire, including a tire tread 1, which is composed of nine equal parts of movable molds.

[0055] like Figure 1-2 As shown, in this embodiment, the tire tread 1 has three rows of unidirectional Z-shaped grooves 2 distributed along its circumference. Irregularly pentagonal main tread blocks 3 are distributed between adjacent Z-shaped grooves 2, forming two rows of block-shaped tread patterns. Each row has shallow, oblique grooves 4 between adjacent main tread blocks 3. The Z-shaped grooves 2 in this embodiment include a central groove 21 and side grooves 22 evenly spaced on both sides of the central groove 21. The main tread blocks 3 in the block-shaped tread patterns on both sides of the central groove 21 are arranged in a reverse staggered manner along the circumferential direction to increase the tire's grip.

[0056] In this embodiment, the bottom of the Z-shaped meandering ditch 2 is provided with several rows of stones 5 along its extension direction. The rows of stones 5 include main rows of stones 51 and auxiliary rows of stones 52 connected alternately in sequence. The main rows of stones 51 and auxiliary rows of stones 52 are connected in sequence to form an effective stone removal path, so as to effectively avoid stones getting stuck at the bottom of the ditch and prevent the bottom of the ditch from cracking.

[0057] In this embodiment, the tire tread 1 has several shallow, knife-shaped grooves 6 evenly distributed on its shoulder to effectively prevent uneven wear. Several block-shaped heat dissipation grooves 7 are evenly distributed under both shoulders of the tire tread 1 to improve shoulder heat dissipation and prevent shoulder cracking. Several vent holes 8 are evenly distributed around the main tread block 3 to facilitate venting during vulcanization.

[0058] Example 2:

[0059] This embodiment provides a tread pattern structure for a medium-to-short distance all-steel radial truck tire, including a tire tread 1, which is composed of nine equal parts of movable molds.

[0060] In this embodiment, the tire tread 1 has three rows of Z-shaped grooves 2 arranged in the same direction along its circumference. The Z-shaped grooves 2 include a central groove 21 and side grooves 22 evenly spaced on both sides of the central groove 21. The width and depth of each Z-shaped groove 2 are 13-17 mm. The Z-shaped grooves 2 descend in a funnel shape in the vertical direction, and the bottom of the Z-shaped grooves 2 transitions to an arc with a radius of 1.5-2.5 mm.

[0061] In this embodiment, irregularly shaped pentagonal main tread blocks 3 are distributed between adjacent Z-shaped grooves 2, forming two rows of block-shaped tread patterns. The main tread blocks 3 in the block-shaped tread patterns on both sides of the central groove 21 are arranged in opposite directions along the circumferential direction to increase the tire's grip. In this embodiment, all five corners of the main tread blocks 3 are rounded, and two of the corners of the main tread blocks 3 are adapted to the shape of the bent part of the Z-shaped groove 2. The radius of the rounded corners of the five corners of the main tread blocks 3 ranges from 2 to 10 mm.

[0062] In this embodiment, each column of adjacent main tread blocks 3 is provided with a shallow oblique groove 4. The shallow oblique grooves 4 are evenly distributed along the circumferential direction of the tire, with a groove width of 3.5-4.5mm and a depth of 4.5-5.5mm. The groove depth of the shallow oblique grooves 4 is vertically downward, with a rounded transition of 0.8-1.2mm radius at the bottom transition point, a rounded transition of 0.4-0.6mm at the inner corner of the transition point at the upper and lower ends, and a right-angle transition at the outer corner. The transition point between the shallow oblique grooves 4 and the Z-shaped zigzag grooves 2 on the left and right sides is inclined downward, with an outer angle of 100-105° downward with the horizontal groove surface.

[0063] In this embodiment, the Z-shaped meandering ditch 2 has several rows of stones 5 arranged along its extension direction at the bottom. The stone rows 5 include main stone rows 51 and auxiliary stone rows 52 connected alternately in sequence. The main stone rows 51 and auxiliary stone rows 52 are connected sequentially to form an effective stone-discharging path, effectively preventing stones from getting stuck at the bottom of the ditch and preventing cracks in the bottom. The main stone rows 51 have a length of 8-12mm, a width of 2.5-3.5mm, and a height of 2.2-2.8mm. The auxiliary stone rows 52 have a length of 4.5-6mm, a width of 0.6-1mm, and a height equal to that of the main stone rows 51.

[0064] In this embodiment, the tire tread 1 has several shallow, knife-shaped grooves 6 evenly distributed on its shoulder, which can effectively prevent uneven wear. The width of the knife-shaped grooves 6 is 3-5 mm, the depth is 4-6 mm, and the bottom of the groove is a circular arc transition with a radius of 0.8-1.2 mm. The junction between the knife-shaped grooves 6 and the Z-shaped zigzag grooves 2 is inclined downwards, and the angle between the grooves and the horizontal groove surface is 100-105° downwards.

[0065] In this embodiment, several block-shaped heat dissipation grooves 7 are evenly distributed under both shoulders of the tire tread 1 to improve heat dissipation in the shoulder area and prevent shoulder cracking. The long side of the block-shaped heat dissipation groove 7 is 22-30mm, the short side is 10-12mm, and the groove depth is 2.5-3.5mm. The transition points of the block-shaped heat dissipation groove 7 are all transitioned by an arc with a radius of 1.8-2.2mm, and the bottom of the groove is also transitioned by an arc with a radius of 1.8-2.2mm.

[0066] In this embodiment, the main tread block 3 has several vent holes 8 with a diameter of 0.6-1mm evenly distributed around it. This facilitates venting during vulcanization, prevents air pockets from causing tread corners and sidewall defects, promotes rubber flow, and makes the rubber vulcanization more uniform.

[0067] Example 3:

[0068] This embodiment provides a tread pattern structure for a medium-to-short distance all-steel radial truck tire, including a tire tread 1, which is composed of nine equal parts of movable molds.

[0069] The difference from Embodiment 1 is that in this embodiment, the Z-shaped groove 2 has wear indicator protrusions 9 evenly distributed in six equal parts along its circumference, 2-3 mm higher than the bottom of the groove. The width of the wear indicator protrusions 9 is the same as the groove surface of the Z-shaped groove 2, and the length is 8-12 mm. The center of the wear indicator protrusion 9 is a hollow circular hole with a diameter of 2.5-3.5 mm. Tire wear indicators are used to determine the degree of tire wear and are of great significance for safe driving and tire life.

[0070] Example 4:

[0071] This embodiment provides a tread pattern structure for a medium-to-short-range all-steel radial truck tire, including a tire body, which comprises a wheel disc and a tire tread 1. The tire tread 1 is composed of nine equal movable sections, and the tread pitch of the tire tread 1 is 72 sections. The tire tread 1 has three Z-shaped zigzag grooves 2 and two rows of main tread blocks 3, as well as oblique shallow grooves 4 located between the main tread blocks 3. The tire tread 1 also has vents 8, wear indicator protrusions 9, knife-shaped shallow grooves 6 on the shoulders, and square block-shaped heat dissipation grooves 7 evenly distributed under the shoulders on both sides.

[0072] In this embodiment, the tire tread 1 features a three-row longitudinal Z-shaped groove design 2, resulting in lower rolling resistance and fuel savings. The groove bottom transitions with a rounded design, and evenly distributed stone blocks 5 in the middle effectively prevent stones from getting stuck at the bottom of the groove and prevent cracking. The three main grooves are unidirectional Z-shaped grooves 2, each 15mm wide, descending in a funnel shape vertically, with a 2mm radius rounded transition at the bottom, providing driving safety in various weather conditions. Two rows of pentagonal-like main tread blocks 3 are evenly distributed between the Z-shaped grooves 2. These tread blocks have multiple shallow diagonal grooves 4 evenly distributed around the circumference of the tire tread 1, providing excellent traction and braking performance. The two rows of main tread blocks 3 are staggered in the same direction along the circumference, creating an aesthetically pleasing overall design and increasing tire grip.

[0073] In this embodiment, the tire tread 1 is designed with three longitudinal Z-shaped zigzag grooves 2 in the direction from the nine-part movable mold to the upper and lower sideplates, which has low rolling resistance and saves fuel. The three main zigzag grooves are Z-shaped zigzag grooves 2 in the same direction, each with a groove width of 15mm and a groove depth of 15mm. They descend in a funnel shape vertically, and the transition at the bottom of the groove is a rounded concave corner with a radius of 2mm, which has excellent drainage performance. The bottom of the groove is evenly distributed with alternating sizes of stone blocks 5. The large stone blocks (i.e., the main stone blocks 51) are 10mm long, 3mm wide, and 2.5mm high; the small stone blocks (i.e., the auxiliary stone blocks 52) are 5.16mm long, 0.8mm wide, and 2.5mm high, which can effectively prevent stones from getting stuck at the bottom of the groove, prevent the bottom of the groove from cracking, and provide driving safety in various weather conditions.

[0074] In this embodiment, the tire tread 1 has two rows of pentagonal-like main tread blocks 3 evenly distributed between the Z-shaped grooves 2. The five corners of each main tread block 3 are rounded. The left row of main tread blocks 3 starts from the top corner and descends clockwise, with the rounded radii of the five corners being 2mm, 10mm, 5mm, 2mm, and 5mm respectively. The right row of main tread blocks 3 also starts from the top corner and descends clockwise, with the rounded radii of the five corners being 2mm, 5mm, 2mm, 10mm, and 5mm respectively. The two rows of main tread blocks 3 are staggered in opposite directions circumferentially on both sides of the central groove 21, resulting in an aesthetically pleasing overall design while significantly enhancing the tire's grip.

[0075] In this embodiment, multiple shallow, oblique grooves 4 are evenly distributed along the circumferential direction of the tire tread 1. Each shallow groove 4 is 4mm wide and 5mm deep; the groove depth is vertically downwards, with a 1mm radius arc transition at the bottom. The inner corners at the upper and lower ends have a 0.5mm arc transition, while the outer corners have a right angle transition, providing excellent water drainage and heat dissipation performance for the tire. The transition between the shallow grooves 4 and the Z-shaped grooves 2 on the left and right sides is a downward sloping transition, with a 102° angle downwards at the outer corner of the horizontal groove surface, and a 2mm radius arc transition at the bottom of the deep groove. The transition between the shallow and deep grooves is smooth and fluid, resulting in smooth and aesthetically pleasing lines.

[0076] In this embodiment, the tire tread 1 is divided into 6 equal parts along the circumference of the Z-shaped groove 2, with raised platforms 2.4 mm higher than the bottom of the groove, namely wear indicator raised platforms 9. The width of the wear indicator raised platform 9 is the same as the groove surface, the length is 10 mm, the depth is 2.4 mm, and the center is a hollow circular hole with a diameter of 3 mm. Tire wear indicators are used to determine the degree of tire wear, and they are of great significance for safe driving and tire life.

[0077] In this embodiment, the tire tread 1 has multiple shallow, knife-shaped grooves 6 evenly distributed on its shoulder. The grooves are 4mm wide and 5mm deep, with a 1mm radius arc transition at the bottom. The transition point between the groove and the main groove is downward, and the angle between the groove and the horizontal groove surface is 102° downward. The remaining shoulder portion of the tire tread 1 is a closed design to improve the rigidity of the shoulder tread pattern and effectively prevent uneven wear.

[0078] In this embodiment, multiple block-shaped heat dissipation grooves 7 are evenly distributed under both shoulders of the tire tread 1. The long side is 26mm, the short side is 10.8mm, and the groove depth is 3mm. The transition points are all made of arc with a radius of 2mm, and the bottom of the groove is also made of arc with a radius of 2mm to improve heat dissipation in the shoulder and avoid shoulder cracking.

[0079] In this embodiment, the tire tread 1 has multiple vent holes 8 with a diameter of 0.8 mm distributed around the main tread block 3, which penetrate the mold to facilitate venting during vulcanization, prevent air pockets from causing tread rounded corners and missing rubber on the sidewall, promote rubber flow, and make the rubber vulcanization more uniform.

[0080] After adopting the tire tread structure of this embodiment, indoor mileage tests and outdoor actual vehicle mileage tests have confirmed that the medium-to-short distance all-steel radial truck tire of this embodiment has low rolling resistance and saves fuel. The tire tread structure of this embodiment adopts a large-area closed shoulder design to improve the rigidity of the shoulder tread strips and effectively prevent uneven wear. The tread structure of this embodiment is regularly arranged, thus effectively reducing tire noise during driving.

[0081] 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 medium and short distance all-steel truck radial tire comprising a tire tread (1), characterized in that, The tire tread (1) is composed of nine equal parts; The tire tread (1) has three rows of Z-shaped grooves (2) in the same direction distributed around its circumference. Irregular pentagonal main pattern blocks (3) are distributed between adjacent Z-shaped grooves (2), forming two rows of block pattern columns. Each row of adjacent main pattern blocks (3) is provided with oblique shallow grooves (4). The Z-shaped zigzag groove (2) includes a central zigzag groove (21) and side zigzag grooves (22) equally spaced on both sides of the central zigzag groove (21). The main pattern blocks (3) in the block pattern rows on both sides of the central zigzag groove (21) are arranged in opposite directions along the circumferential direction. The bottom of the Z-shaped ditch (2) is provided with several rows of stones (5) along its extension direction; the rows of stones (5) include main rows of stones (51) and auxiliary rows of stones (52) connected alternately in sequence; The tire tread (1) has several knife-shaped shallow grooves (6) evenly distributed on the shoulder, several block-shaped heat dissipation grooves (7) evenly distributed under the two shoulders of the tire tread (1), and several exhaust holes (8) evenly distributed around the main tread block (3).

2. A tread pattern structure for a medium and short distance all-steel truck radial tire according to claim 1, wherein The width of the Z-shaped zigzag groove (2) is 13-17 mm and the depth is 13-17 mm. The Z-shaped zigzag groove (2) descends in a funnel shape in the vertical direction, and the bottom transition of the Z-shaped zigzag groove (2) is a circular arc transition with a radius of 1.5-2.5mm.

3. The tread pattern structure of a medium and short distance all-steel truck radial tire according to claim 1, wherein, The five corners of the main pattern block (3) are all rounded, and two of the corners of the main pattern block (3) are adapted to the shape of the bent part of the Z-shaped zigzag groove (2). The radius of the arc at the five corners of the main pattern block (3) ranges from 2 to 10 mm.

4. The tread pattern structure of a medium and short distance all-steel truck radial tire according to claim 1, wherein, The oblique shallow groove (4) is evenly distributed along the tire circumferential direction; The width of the inclined shallow trench (4) is 3.5-4.5 mm, and the depth is 4.5-5.5 mm; The sloping shallow ditch (4) is vertically downward, with a circular arc transition of 0.8-1.2 mm at the bottom of the ditch, a circular arc transition of 0.4-0.6 mm at the upper and lower end transition points, and a right angle transition at the outer corner.

5. The tread pattern structure of a medium-to-short-range all-steel radial truck tire according to claim 1, characterized in that, The transition point between the sloping shallow ditch (4) and the Z-shaped zigzag ditch (2) on the left and right sides is inclined downwards, with the angle between the ditch and the horizontal ditch surface being 100-105° downwards.

6. A tread pattern structure for a medium and short distance all-steel truck radial tire according to claim 1, wherein The main row of stones (51) has a length of 8-12mm, a width of 2.5-3.5mm, and a height of 2.2-2.8mm; The auxiliary stone block (52) has a length of 4.5-6mm, a width of 0.6-1mm, and a height equal to that of the main stone block (51).

7. A tread pattern structure for a medium and short distance all-steel truck radial tire according to claim 1, wherein The width of the knife-shaped shallow groove (6) is 3-5mm, the depth is 4-6mm, and the bottom of the groove is a circular arc transition with a radius of 0.8-1.2mm. The junction of the knife-shaped shallow groove (6) and the Z-shaped zigzag groove (2) is inclined downwards, and the angle between the groove and the horizontal groove surface is 100-105° inclined downwards.

8. A tread pattern structure for a medium and short distance all-steel truck radial tire according to claim 1, wherein The block-shaped heat dissipation trench (7) has a long side length of 22-30mm, a short side length of 10-12mm, and a trench depth of 2.5-3.5mm; The transition points of the block-shaped heat dissipation trench (7) all adopt a circular arc transition with a radius of 1.8-2.2mm, and the bottom of the trench adopts a circular arc transition with a radius of 1.8-2.2mm.

9. A tread pattern structure for a medium and short distance all-steel truck radial tire according to claim 1, wherein The diameter of the exhaust port (8) is 0.6-1 mm.

10. A tread pattern structure for a medium and short distance all-steel truck radial tire according to claim 1, wherein The Z-shaped zigzag groove (2) has wear indicator protrusions (9) that are 2-3 mm higher than the bottom of the groove, evenly distributed in six equal parts along its circumference; The width of the wear mark protrusion (9) is the same as the width of the groove surface of the Z-shaped zigzag groove (2), and the length is 8-12mm. The center of the wear mark protrusion (9) is a hollow circular hole with a diameter of 2.5-3.5mm.

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