Tread pattern structure of metric all-steel truck tubeless radial tire

Abstract

The utility model relates to a metric all-steel truck tubeless radial tire tread pattern structure. Main pattern blocks and main pattern grooves are uniformly distributed on a tire tread; the main pattern blocks comprise two central pattern blocks and two outer side pattern blocks; the main pattern grooves comprise five longitudinal straight grooves; the two central pattern blocks are separated by a longitudinal straight groove, the adjacent central pattern blocks and outer side pattern blocks are separated by longitudinal straight grooves, and longitudinal straight grooves are distributed on the outer sides of the outer side pattern blocks; first arc-shaped shallow grooves and first semi-arc-shaped shallow grooves are alternately distributed in the central pattern block; second arc-shaped shallow grooves and second semi-arc-shaped shallow grooves are alternately distributed in the outer side pattern blocks, and longitudinal shallow grooves are further distributed in the outer side pattern blocks. Compared with the prior art, the longitudinal pattern design is adopted, the driving safety in various weathers is provided, and due to longitudinal continuity in the driving process, the rolling resistance is small, the oil consumption is low, the tire noise is small, and the comfort degree is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to a tire design technical field, especially to a metric full -steel load carrying tubeless radial tire tread pattern structure. BACKGROUND

[0002] Tire is a round ring elastic rubber product for rolling on the ground, which is usually installed on a metal rim to support the vehicle body, buffer external impact, realize contact with the road and ensure the driving performance of the vehicle. Tires are often used in complex and harsh conditions, and they bear various deformations, loads, forces and high and low temperatures during driving, so they must have high load-bearing performance, traction performance and cushioning performance. At the same time, it is also required to have high wear resistance and flex resistance, as well as low rolling resistance and heat generation. Half of the world's rubber consumption is used for tire production, which shows the capacity of rubber consumption for tires.

[0003] Tire pattern design is various, and its design is considered according to the applicability of different purposes and different road conditions. When selecting, these aspects should also be considered. Tire pattern plays a very important role in the entire driving, and a reasonable pattern not only can effectively save oil, but also can reduce the noise generated during driving, and at the same time can enhance the driving force, braking force and traction force performance of the automobile on various bad and slippery road surfaces, thereby improving the safety of automobile driving.

[0004] There are several categories of tire patterns:

[0005] (1) Straight groove pattern, also known as ordinary pattern, which is a pattern design mainly with longitudinal grooves.

[0006] Features: excellent steering stability, small rotation resistance, low noise, excellent drainage performance, and not easy to slide laterally.

[0007] Application: used on flat road surface Vehicle type: cars, trucks, and even airplanes.

[0008] Disadvantages: poor driving and traction.

[0009] (2) Cross groove pattern: a pattern design mainly with cross grooves.

[0010] Features: excellent driving force, braking force and traction force of cross groove pattern, and excellent wear resistance.

[0011] Application: used on bad roads such as gravel roads Vehicle type: mostly used in industrial, short-distance vehicles such as bulldozers, excavators, loaders, and heavy-duty truck vehicles.

[0012] Disadvantages: loud noise.

[0013] (3) Longitudinal and transverse groove pattern: Longitudinal and transverse groove pattern is also called comprehensive pattern, which is a combination of straight groove pattern and transverse groove pattern.

[0014] Features: It has the advantages of longitudinal groove pattern and transverse groove pattern.

[0015] Application: Poor road surface.

[0016] Disadvantages: It is easy to cause abnormal wear.

[0017] (4) Block pattern: The pattern is arranged in blocks.

[0018] Features: Good driving force and braking force, providing the force to drive the car forward.

[0019] Application: Snowy, muddy and other road surfaces.

[0020] Disadvantages: Poor wear resistance and short mileage life.

[0021] The main driving route of a metric full steel load tire without tube type radial tire on the market is above the paved road surface, and the main quality defects of the tire are shoulder empty, crown empty and poor wear resistance. The tire has high requirements for pattern, should have low heat generation and good wear resistance, low noise, low rolling resistance, and novel appearance. Invention content

[0022] The purpose of the present application is to overcome the defects of the prior art and provide a metric full steel load tire without tube type radial tire tread pattern structure. Due to the design of five longitudinal straight grooves, the tire with the pattern form of the present application has low rolling resistance, saves fuel, and the pattern is regularly arranged, so that the noise during tire driving can be effectively reduced. The combination of longitudinal pattern (longitudinal pattern mainly includes main pattern groove, longitudinal shallow groove, and also includes main pattern block) and transverse pattern (transverse pattern mainly includes arc-shaped shallow groove and semi-arc-shaped shallow groove) realizes good guidance, drainage, grip and anti-skid performance of the tire at high speed, and the angle of the changing pattern groove (arc-shaped shallow groove, semi-arc-shaped shallow groove) improves the traction and lateral force of the tire.

[0023] The purpose of the present application can be achieved by the following technical solutions:

[0024] The utility model discloses a metric full steel load carrying tubeless radial tire tread pattern structure, including tire tread and even distribution on tire tread's main pattern piece and main pattern groove, the main pattern piece includes 2 central pattern pieces and 2 lateral pattern pieces, along tire tread circumferential center line to both sides direction, respectively even distribution central pattern piece and lateral pattern piece, the main pattern groove includes 5 longitudinal straight grooves, 2 central pattern pieces are separated by longitudinal straight groove, and adjacent central pattern piece and lateral pattern piece are separated by longitudinal straight groove, and lateral distribution has longitudinal straight groove to lateral pattern piece, first arc shallow groove and first half arc shallow groove are alternately and evenly distributed on central pattern piece, second arc shallow groove and second half arc shallow groove are alternately and evenly distributed on lateral pattern piece, and longitudinal shallow groove is also distributed on lateral pattern piece.

[0025] Further, the main pattern piece and the main pattern groove on the tire tread are centrosymmetric about a point on the center line of the tire tread circumferential direction.

[0026] Further, the 5 longitudinal straight grooves include 3 first straight grooves and 2 second straight grooves; the 2 central pattern pieces are separated by the first straight grooves, and the adjacent central pattern pieces and the lateral pattern pieces are separated by the first straight grooves; and the second straight grooves are distributed outside the lateral pattern pieces.

[0027] Further, the pattern pitch is 66, and the tire tread in the direction of the upper and lower side plates of the nine-equal-portion live block has 5 longitudinal straight grooves, so that lower rolling resistance is achieved and fuel is saved.

[0028] Further, the first straight groove has a width of 15 mm, a depth of 16 mm, a circular arc transition with a radius of 5.58 mm at the groove bottom, a depth of 16 mm, and a circular arc transition with a radius of 6.3 mm at the groove bottom, so as to provide excellent water drainage and heat dissipation performance for the tire.

[0029] Further, the 2 central pattern pieces and the 2 lateral pattern pieces each have a width of 36 mm.

[0030] Further, along the center line of the tire tread circumferential direction to both sides direction, the central pattern pieces distributed on the left and right sides are distributed in a reverse direction staggered manner; along the center line of the tire tread circumferential direction to both sides direction, the central pattern pieces distributed on the left and right sides are distributed in a reverse direction staggered manner.

[0031] Further, the first arc shallow groove penetrates the central pattern piece width; and the first half arc shallow groove is distributed outside, and extends from the edge of the central pattern piece to the middle of the central pattern piece.

[0032] Further, the second arc-shaped shallow groove penetrates the width of the outer pattern block; the second semi-arc-shaped shallow groove is distributed towards the inner side and extends from the edge of the outer pattern block to the middle of the outer pattern block; the longitudinal shallow groove is distributed along the circumference of the tire tread, and the longitudinal shallow groove connects the second arc-shaped shallow groove and the second semi-arc-shaped shallow groove.

[0033] Further, the width of the first arc-shaped shallow groove is 3mm, and the depth is 12mm; the first arc-shaped shallow groove is divided into two sections downwardly; the width of the upper section is 3mm, and the height is 2mm; the width of the lower section is 0.8mm, and the depth is 10mm; the bottom of the groove is a circular arc transition with a radius of 0.4mm; the female angle at the transition of the upper section and the lower section is a circular arc transition with a radius of 0.5mm; and the male angle is a right angle transition.

[0034] Further, the width of the first semi-arc-shaped shallow groove is 1.5mm, and the depth is 2mm; the bottom of the groove is a circular arc transition with a radius of 0.75mm.

[0035] Further, the width of the second arc-shaped shallow groove is 3mm, and the depth is 12mm; the second arc-shaped shallow groove is divided into two sections downwardly; the width of the upper section is 3mm, and the height is 2mm; the width of the lower section is 0.8mm, and the depth is 10mm; the bottom of the groove is a circular arc transition with a radius of 0.4mm; the female angle at the transition of the upper section and the lower section is a circular arc transition with a radius of 0.5mm; and the male angle is a right angle transition.

[0036] Further, the width of the second semi-arc-shaped shallow groove is 1.5mm, and the depth is 2mm; the bottom of the groove is a circular arc transition with a radius of 0.75mm.

[0037] Further, the longitudinal shallow groove penetrates the outer pattern block in the circumferential direction; the groove width is 1.5mm, the groove depth is 2mm, and the bottom of the groove is a circular arc transition with a radius of 0.75mm.

[0038] Further, it further comprises a wear mark, which is a boss that is 2.4mm higher than the bottom of the groove; the boss is evenly distributed along the circumference of the main pattern groove in 6 equal parts.

[0039] Further, the width of the wear mark is the same as the groove surface of the main pattern groove, the length is 10mm, and the depth is 2.4mm; the wear mark is a hollow circle with a diameter of 3mm in the middle. The tire wear mark is a mark used to judge the degree of tire wear, which is of great significance to the safe driving of vehicles and the service life of tires.

[0040] Further, the shoulder of the tire tread is uniformly distributed with multiple zigzag grooves, the groove width is 3mm, the groove depth is 2mm, and the female angle at the transition of the bottom of the groove is a circular arc transition with a radius of 0.75mm.

[0041] Further, the lower shoulder of the tire tread is uniformly distributed with multiple circular grooves.

[0042] Further, the radius of the circular groove is 5mm, the groove depth is 2mm, and the groove is tapered downward, and the bottom of the groove is a circular arc with a radius of 5mm.

[0043] Further, the circular groove is connected to the shoulder of the tire tread by a square shallow groove.

[0044] Further, the square shallow groove has a groove width of 4mm, a groove depth of 1.5mm, and a groove bottom with a radius of 0.5mm circular arc transition, which improves the heat dissipation of the shoulder and avoids shoulder cracking.

[0045] Further, a plurality of exhaust holes are distributed on the tire tread.

[0046] Further, the diameter of the exhaust hole is 0.8mm, which facilitates exhaust during vulcanization, prevents air pockets from causing pattern fillets and tire side lack of glue, promotes glue flow, and makes the glue vulcanize more evenly.

[0047] Further, the metric full steel load without tube type radial tire tread pattern structure is used for a tire, and the tire includes a tire body, the tire body includes a wheel disc and a tire tread connected to the wheel disc.

[0048] Further, the tire tread includes a main pattern block and a main pattern groove distributed in the middle of the tire tread, and the two sides of the middle of the tire tread are the shoulders of the tire tread.

[0049] Further, the larger area closed shoulder design (the shoulder of the tire tread is an integral design, the curved groove has a groove depth of 2mm, the depth is relatively shallow, and the length does not penetrate the width of the shoulder of the tire tread, which is a decorative groove), which improves the rigidity of the shoulder pattern bar and effectively prevents eccentric wear.

[0050] Compared with the prior art, the utility model has the following beneficial effects:

[0051] 1) The metric full steel load without tube type radial tire tread pattern structure provided by the utility model adopts a longitudinal pattern (the main pattern block and the main pattern groove are distributed longitudinally) design, provides driving safety in various weather conditions, has small rolling resistance, low fuel consumption, small tire noise and high comfort during driving.

[0052] 2) The metric full steel load without tube type radial tire tread pattern structure provided by the utility model has 5 longitudinal straight grooves in the tread, has low rolling resistance and saves fuel; the middle three straight grooves and the two straight grooves on both sides provide excellent water drainage and heat dissipation performance for the tire.

[0053] 3) The utility model provides a metric full -steel load no -tube type radial tire tread pattern structure, and the tire has higher crown heat dissipation performance (circular ditch and square shallow ditch), and the pattern arrangement is reasonable, reduces abnormal wear, provides uniform wear and low rolling resistance, enhances the quiet comfort, and the symmetrical (central symmetry) pattern design guarantees even wear, improves tire service life. BRIEF DESCRIPTION OF DRAWINGS

[0054] Fig. 1 It is the structure schematic diagram of the metric full -steel load no -tube type radial tire tread pattern structure of the utility model,

[0055] Fig. 2 The structure drawing of the single pitch of the metric full -steel load no -tube type radial tire tread pattern structure of the utility model.

[0056] In the drawing: 1 - tire tread, 2 - main pattern block, 21 - central pattern block, 22 - outside pattern block, 23 - first arc shallow ditch, 24 - first half arc shallow ditch, 25 - second arc shallow ditch, 26 - second half arc shallow ditch (26), 27 - longitudinal shallow ditch, 3 - main pattern ditch, 31 - first straight ditch, 32 - second straight ditch, 4 - zigzag bend ditch, 5 - circular ditch, 6 - vent hole, 7 - wear mark, 8 - square shallow ditch. DETAILED DESCRIPTION

[0057] The utility model will be explained in detail in combination with the drawings and specific embodiment.The components model, material name, connection structure and other features not explicitly stated in the technical scheme are regarded as the common technical features disclosed in prior art.

[0058] The application provides a metric no -tube type full -steel load radial tire tread pattern structure, which comprises a tire body, the tire body comprises a wheel disc and a tire tread, the tire tread 1 is composed of nine equal parts of a flexible die, the tire tread 1 is evenly distributed with main pattern blocks 2 and main pattern ditches 3, the main pattern blocks 2 comprise two central pattern blocks 21 and two outside pattern blocks 22, the main pattern ditches 3 comprise five longitudinal straight ditches, the middle three straight ditches have a width of 15mm, the two side straight ditches have a width of 17mm, the two central pattern blocks 21 are alternately distributed with arc shallow ditches (first arc shallow ditches 23) penetrating the width of the pattern block and half arc shallow ditches (first half arc shallow ditches 24) close to the outside, the two side pattern blocks (outside pattern blocks 22) are alternately distributed with arc shallow ditches (second arc shallow ditches 25) penetrating the width of the pattern block and half arc shallow ditches (second half arc shallow ditches 26) close to the inside, and a longitudinal shallow ditch 27 penetrating the pattern block in the circumferential direction.The utility model adopts longitudinal pattern design, provides driving safety under multiple weathers.During driving, due to longitudinal continuity, the rolling resistance is small, fuel consumption is low, tire noise is small, and comfort is high.

[0059] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0060] It should be noted that in this invention, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0061] The outer side refers to the direction away from the center line along the circumference of the tire tread.

[0062] Example 1

[0063] like Figs. 1-2 As shown, this embodiment provides a metric all-steel tubeless radial truck tire tread pattern structure, including a tire tread 1 and main tread blocks 2 and main tread grooves 3 evenly distributed on the tire tread 1; the main tread blocks 2 include two central tread blocks 21 and two outer tread blocks 22; the central tread blocks 21 and outer tread blocks 22 are distributed sequentially along the center line of the tire tread 1 circumferentially to both sides; the main tread grooves 3 include five longitudinal straight grooves; the two central tread blocks 21 are separated by longitudinal straight grooves, and adjacent central tread blocks 21 and outer tread blocks 22 are separated by longitudinal straight grooves, and longitudinal straight grooves are distributed on the outer side of the outer tread blocks 22; the central tread blocks 21 are alternately and evenly distributed with first arc-shaped shallow grooves 23 and first semi-arc-shaped shallow grooves 24; the outer tread blocks 22 are alternately and evenly distributed with second arc-shaped shallow grooves 25 and second semi-arc-shaped shallow grooves 26, and longitudinal shallow grooves 27 are also distributed on the outer tread blocks 22.

[0064] The main tread blocks 2 and main tread grooves 3 on the tire tread 1 are centrally symmetrical about a point on the circumferential centerline of the tire tread 1.

[0065] 5 straight longitudinal grooves including 3 first straight grooves 31 and 2 second straight grooves 32; the 2 central blocks 21 are separated by the first straight grooves 31, the adjacent central blocks 21 and the lateral blocks 22 are separated by the first straight grooves 31, and the lateral blocks 22 are distributed outside the second straight grooves 32.

[0066] That is, 1 first straight groove 31 is arranged along the circumferential center line of the tire tread 1, 1 central block 21 is distributed on both sides of the first straight groove 31, 1 first straight groove 31 is distributed on the outside of the central block 21 on both sides, the lateral block 22 is distributed on the outside of the first straight groove 31 on the outside of the central block 21, and the second straight groove 32 is distributed on the outside of the lateral block 22. The 3 first straight grooves 31 and the 2 second straight grooves 32, as well as the 2 central blocks 21 and the 2 lateral blocks 22, are distributed along the circumferential direction (i.e. the longitudinal direction) of the tire tread 1.

[0067] The first arc-shaped shallow groove 23 and the first half-arc-shaped shallow groove 24, as well as the second arc-shaped shallow groove 25 and the second half-arc-shaped shallow groove 26, are transversely distributed, and the longitudinal shallow groove 27 is longitudinally distributed.

[0068] The pattern pitch is 66 pitches, and the tire tread has 5 straight longitudinal grooves in the direction of the upper and lower side plates of the nine-equal-portion movable die, which has lower rolling resistance and saves fuel.

[0069] The width of the first straight groove 31 is 15 mm, the depth is 16 mm, the groove bottom is a circular arc transition with a radius of 5.58 mm, the depth is 16 mm, and the groove bottom is a circular arc transition with a radius of 6.3 mm, which provides excellent drainage and heat dissipation performance for the tire.

[0070] The width of the 2 central blocks 21 and the 2 lateral blocks 22 is 36 mm.

[0071] The central blocks 21 distributed on the left and right sides are distributed in reverse directions along the circumferential center line of the tire tread 1 to the left and right sides; the central blocks 21 distributed on the left and right sides are distributed in reverse directions along the circumferential center line of the tire tread 1 to the left and right sides.

[0072] The first arc-shaped shallow groove 23 penetrates the width of the central block 21; the first half-arc-shaped shallow groove 24 is distributed on the outside, and extends from the edge of the central block 21 to the middle of the central block 21.

[0073] The second arc-shaped shallow groove 25 penetrates the width of the lateral block 22; the second half-arc-shaped shallow groove 26 is distributed on the inside, and extends from the edge of the lateral block 22 to the middle of the lateral block 22; the longitudinal shallow groove 27 is distributed along the circumferential direction of the tire tread 1, and the longitudinal shallow groove 27 connects the second arc-shaped shallow groove 25 and the second half-arc-shaped shallow groove 26.

[0074] The first arc-shaped shallow groove 23 has a width of 3mm and a depth of 12mm. The first arc-shaped shallow groove 23 is divided into two downward sections. The upper section has a width of 3mm and a height of 2mm, and the lower section has a width of 0.8mm and a depth of 10mm. The bottom of the groove is a circular arc transition with a radius of 0.4mm. The internal corner at the transition between the upper and lower sections is a circular arc transition with a radius of 0.5mm, and the external corner is a right angle transition.

[0075] The first semi-circular shallow groove 24 has a width of 1.5 mm and a depth of 2 mm, with the bottom of the groove being a circular arc transition with a radius of 0.75 mm.

[0076] The second arc-shaped shallow groove 25 has a width of 3mm and a depth of 12mm. It is divided into two downward sections. The upper section has a width of 3mm and a height of 2mm, while the lower section has a width of 0.8mm and a depth of 10mm. The bottom of the groove is a circular arc with a radius of 0.4mm. The inner corner at the transition between the upper and lower sections is a circular arc with a radius of 0.5mm, while the outer corner is a right angle transition.

[0077] The second semi-circular shallow groove 26 has a width of 1.5mm and a depth of 2mm, with a circular arc transition at the bottom with a radius of 0.75mm.

[0078] The longitudinal shallow groove 27 extends circumferentially through the outer patterned block 22, with a groove width of 1.5 mm, a groove depth of 2 mm, and a circular arc transition at the bottom with a radius of 0.75 mm.

[0079] Example 2

[0080] like Figs. 1-2 As shown, this embodiment provides a metric all-steel tubeless radial truck tire tread pattern structure. Based on embodiment 1, it also includes wear indicators 7, which are protrusions 2.4mm higher than the bottom of the groove; the protrusions are evenly distributed along the main tread groove in a circumferential 6-division pattern.

[0081] The wear indicator 7 has the same width as the groove surface of the main tread groove 3, a length of 10mm, and a depth of 2.4mm. The center of the wear indicator 7 is a hollow circular hole with a diameter of 3mm. Tire wear indicators are used to determine the degree of tire wear, and they are of great importance for safe vehicle operation and tire lifespan.

[0082] Example 3

[0083] like Figs. 1-2 As shown, this embodiment provides a tread pattern structure for a metric all-steel tubeless radial truck tire. Based on Embodiment 1 or Embodiment 2, it further includes the following configuration:

[0084] The shoulder of the tire tread 1 has multiple zigzag grooves 4 evenly distributed, with a groove width of 3mm and a groove depth of 2mm. The bottom corner of the groove is a rounded transition with a radius of 0.75mm.

[0085] A plurality of circular grooves 5 are evenly distributed in the shoulder of the tire tread 1.

[0086] The radius of the circular groove 5 is 5 mm, the groove depth is 2 mm, it is tapered downward, and the groove bottom is a circular arc with a radius of 5 mm.

[0087] The circular groove 5 is connected to the shoulder of the tire tread 1 by a square shallow groove 8.

[0088] The square shallow groove 8 has a groove width of 4 mm and a groove depth of 1.5 mm, and the groove bottom is a circular arc with a radius of 0.5 mm, which improves the heat dissipation of the shoulder and avoids shoulder cracking.

[0089] A plurality of exhaust holes 6 that penetrate the mold are distributed on the tire tread 1, mainly on the periphery of the main pattern block 2 and the periphery of the shoulder of the tire tread 1.

[0090] The diameter of the exhaust hole 6 is 0.8 mm, which facilitates exhaust during vulcanization, prevents air pockets from causing pattern fillets and sidewall lack of glue, promotes the flow of rubber, and makes the rubber vulcanize more evenly.

[0091] The metric full steel load without tube type radial tire tread pattern structure is used for a tire, which includes a tire body, the tire body includes a wheel disc and a tire tread 1 connected to the wheel disc. The tire tread 1 includes a main pattern block 2 and a main pattern groove 3 distributed in the middle of the tire tread 1, and the two sides of the middle of the tire tread 1 are the shoulder of the tire tread 1, and the outside of the shoulder (tire shoulder) of the tire tread 1 is the shoulder of the tire tread 1.

[0092] The above description of the embodiments is to facilitate the understanding and use of the utility model by ordinary skilled persons in the technical field. Those skilled in the art can easily make various modifications to these embodiments, and apply the general principles described herein to other embodiments without creative labor. Therefore, the utility model is not limited to the above embodiments, and those skilled in the art can make improvements and modifications within the scope of the utility model without departing from the scope of the utility model.

Claims

1. A tread pattern structure for a metric all-steel tubeless radial truck tire, characterized by, The tire tread (1) comprises a main block (2) and a main groove (3) distributed on the tire tread (1). The main block (2) comprises two central blocks (21) and two outer blocks (22). The central blocks (21) and the outer blocks (22) are distributed in turn along the center line of the tire tread (1) to both sides. The main groove (3) comprises five longitudinal straight grooves. The two central blocks (21) are separated by the longitudinal straight grooves, and the adjacent central blocks (21) and the outer blocks (22) are separated by the longitudinal straight grooves. The outer blocks (22) are distributed with the longitudinal straight grooves on the outside. The central blocks (21) are alternately distributed with the first arc-shaped shallow grooves (23) and the first semi-arc-shaped shallow grooves (24).

2. A tread pattern structure for a metric all-steel tubeless radial truck tire according to claim 1, characterized in that, The outer blocks (22) are alternately distributed with the second arc-shaped shallow grooves (25) and the second semi-arc-shaped shallow grooves (26), and are also distributed with the longitudinal shallow grooves (27). The five longitudinal straight grooves comprise three first straight grooves (31) and two second straight grooves (32).

3. A tread pattern structure for a metric full steel car tyre of tubeless radial type according to claim 2, characterized in that, The two central blocks (21) are separated by the first straight grooves (31), and the adjacent central blocks (21) and the outer blocks (22) are separated by the first straight grooves (31).

4. A tread pattern structure for a metric all-steel tubeless radial truck tire according to claim 1, wherein The first straight grooves (31) have a width of 15mm and a depth of 16mm, and the groove bottom is a circular arc transition with a radius of 5.58mm. The two central blocks (21) and the two outer blocks (22) each have a width of 36mm. The central blocks (21) distributed on the left and right sides are distributed in reverse direction.

5. A tread pattern structure for a metric all-steel tubeless radial truck tire as claimed in claim 1, wherein The central blocks (21) distributed on the left and right sides are distributed in reverse direction. The first arc-shaped shallow grooves (23) penetrate the width of the central blocks (21). The first semi-arc-shaped shallow grooves (24) are distributed on the outside and extend from the edge of the central blocks (21) to the middle of the central blocks (21). The second arc-shaped shallow grooves (25) penetrate the width of the outer blocks (22). The second semi-arc-shaped shallow grooves (26) are distributed on the inside and extend from the edge of the outer blocks (22) to the middle of the outer blocks (22).

6. A tread pattern structure for a metric all-steel tubeless radial truck tire as claimed in claim 1, wherein The longitudinal shallow grooves (27) are distributed along the circumference of the tire tread (1) and connect the second arc-shaped shallow grooves (25) and the second semi-arc-shaped shallow grooves (26). The first arc-shaped shallow grooves (23) have a width of 3mm and a depth of 12mm, and are divided into two sections downward, the upper section has a width of 3mm and a height of 2mm, and the lower section has a width of 0.8mm and a depth of 10mm, the groove bottom is a circular arc transition with a radius of 0.4mm, the transition between the upper section and the lower section is a circular arc transition with a radius of 0.5mm, and the acute angle is a right angle transition. The first semi-arc-shaped shallow grooves (24) have a width of 1.5mm and a depth of 2mm, and the groove bottom is a circular arc transition with a radius of 0.75mm. The second arc-shaped shallow groove (25) has a width of 3 mm and a depth of 12 mm, and is divided into two sections, wherein the upper section has a width of 3 mm and a height of 2 mm, and the lower section has a width of 0.8 mm and a depth of 10 mm, the bottom of the groove is a circular arc transition with a radius of 0.4 mm, the transition between the upper section and the lower section is a fillet with a radius of 0.5 mm, and the square corner is a right angle transition; The second half-arc-shaped shallow groove (26) has a width of 1.5 mm and a depth of 2 mm, and the bottom of the groove is a circular arc transition with a radius of 0.75 mm; The longitudinal shallow groove (27) extends through the outer pattern block (22) in the circumferential direction, has a width of 1.5 mm and a depth of 2 mm, and the bottom of the groove is a circular arc transition with a radius of 0.75 mm.

7. A tread pattern structure for a metric full steel car tyre of tubeless radial type according to claim 1, characterized in that, Further comprising a wear mark (7) which is a boss 2.4 mm higher than the bottom of the groove; The wear mark (7) is evenly distributed along the main pattern groove (3) in the circumferential direction and is 6 equal parts on average; The wear mark (7) has the same width as the groove surface of the main pattern groove (3), a length of 10 mm, and a depth of 2.4 mm, and the center of the wear mark (7) is a hollow circular hole with a diameter of 3 mm.

8. A tread pattern structure for a metric, all-steel, tubeless radial truck tire according to claim 1, characterized in that, The shoulder of the tire tread (1) is uniformly distributed with a plurality of curved grooves (4) having a width of 3 mm and a depth of 2 mm, and the fillet of the transition at the bottom of the groove is a circular arc transition with a radius of 0.75 mm.

9. A tread pattern structure for a metric full steel car tyre of tubeless radial type according to claim 1, characterized in that, A plurality of circular grooves (5) are uniformly distributed under the shoulder of the tire tread (1). The circular groove (5) has a radius of 5 mm and a depth of 2 mm, and is tapered downward, and the bottom of the groove is a circular arc transition with a radius of 5 mm; The circular groove (5) is connected to the shoulder of the tire tread (1) through a square shallow groove (8); The square shallow groove (8) has a width of 4 mm and a depth of 1.5 mm, and the bottom of the groove is a circular arc transition with a radius of 0.5 mm.

10. A tread pattern structure for a metric all-steel truck tubeless radial tire as set forth in claim 1, characterized in that, The tire tread (1) is provided with a plurality of exhaust holes (6) penetrating the mold; The diameter of the exhaust hole (6) is 0.8 mm.

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