Truck radial tire pattern and tire

Abstract

The utility model provides a truck radial tire pattern and a tire, and belongs to the technical field of tires, the truck radial tire pattern comprises a plurality of longitudinal main grooves arranged along the circumferential direction of a tread; the tread middle pattern group comprises a plurality of columns of middle strip-shaped pattern block groups, and every two adjacent columns of middle strip-shaped pattern block groups are separated through a longitudinal main groove; and the tire shoulder pattern group comprises tire shoulder strip-shaped pattern block groups which are respectively arranged on two sides of the tread middle pattern group. The truck radial tire disclosed by the utility model has the characteristics of improving lateral stability and wet skid resistance, improving operation stability and reducing rolling resistance.

Description

Technical Field

[0001] The utility model belongs to the technical field of tires, and in particular relates to a load-bearing radial tire pattern and a tire. Background Art

[0002] The automobile is one of the important symbols of the development of modern human transportation civilization, reflecting the economic and technological development of a country and region. As the part of the automobile that directly contacts the road surface, the tire has an important impact on the vehicle's maneuverability, safety and comfort. The structure of the tire tread pattern directly affects the various performances of the tire. In order to adapt to different road conditions, various patterns are engraved on the tire tread. Among them, the types of patterns can be roughly divided into: ordinary patterns, suitable for driving on hard roads / good roads such as cement, asphalt, and mud; mixed patterns, suitable for driving on both good and bad roads; off-road patterns, used for use under no road conditions.

[0003] Tire rolling resistance directly affects the driving performance of the vehicle. The rolling resistance caused by tire rotation and deformation during driving is actually a kind of energy loss. Each component inside the tire has an impact on rolling resistance, and the tire tread is the biggest factor affecting the overall rolling resistance. Among them, the tire energy loses 44% of its energy from the tread, followed by 26% in the bead area, and the rest of the tire's belt layer, sidewall, inner liner, etc. account for 30% of the total energy loss.

[0004] Due to the heavy load, radial truck tires have greater rolling resistance than ordinary vehicles, are more prone to wear during use, and have poor lateral stability and anti-skid performance. Therefore, under the premise of ensuring the basic performance of the tire, improving the lateral stability and anti-skid performance of radial truck tires, improving the handling performance, and reducing the rolling resistance are issues that need to be urgently addressed by those skilled in the art. Utility Model Content

[0005] Details of one or more embodiments of the present invention are set forth in the following drawings and description to make other features, objects, and advantages of the present application more readily apparent.

[0006] The utility model provides a load-carrying radial tire pattern and a tire, which solves the above-mentioned technical problems existing in the existing load-carrying radial tires and has the characteristics of improving lateral stability and anti-slip performance, enhancing handling stability and reducing rolling resistance.

[0007] The utility model discloses a load-bearing radial tire pattern, including a longitudinal main groove, which is arranged along the circumference of the tread; a middle pattern group of the tread, including a plurality of rows of middle strip pattern block groups, two adjacent rows of middle strip pattern block groups are separated by the longitudinal main groove, and a plurality of inclined through transverse grooves are arranged at intervals on each row of middle strip pattern block groups, and the transverse grooves on the two adjacent rows of middle strip pattern block groups are staggered and inclined in opposite directions; staggered transverse knife grooves are arranged between adjacent transverse grooves on each row of middle strip pattern block groups, and the transverse knife grooves are parallel to the corresponding transverse grooves; a shoulder pattern group, including shoulder strip pattern block groups respectively arranged on both sides of the middle pattern group of the tread, and a plurality of inclined through shoulder transverse grooves are arranged at intervals on each row of shoulder strip pattern block groups; shoulder knife grooves are arranged between adjacent shoulder transverse grooves, and the shoulder transverse grooves and the shoulder knife grooves have the same direction as the transverse grooves on the adjacent middle strip pattern block groups.

[0008] In some of the embodiments, the longitudinal main grooves include a central longitudinal main groove located on the centerline of the tread, shoulder longitudinal main grooves symmetrically arranged on both sides of the central longitudinal main groove, and a middle longitudinal main groove located between the central longitudinal main groove and the shoulder longitudinal main grooves, wherein the width of the central longitudinal main groove is 3-4 mm narrower than the width of the shoulder longitudinal main groove, and the width of the middle longitudinal main groove is 3-4 mm narrower than the width of the shoulder longitudinal main groove.

[0009] In some embodiments, the middle strip pattern block group includes a first central pattern block and a second central pattern block located on both sides of the center line of the tread, and the first central pattern block and the second central pattern block are arranged in a staggered symmetry with respect to the center axis of the tread; a first middle pattern block located outside the first central pattern block and a second middle pattern block located outside the second central pattern block, and the first middle pattern block and the second middle pattern block are arranged in a staggered symmetry with respect to the center axis of the tread.

[0010] In some embodiments, the shoulder strip pattern block group includes a first shoulder pattern block and a second shoulder pattern block respectively located on two shoulders, and the first shoulder pattern block and the second shoulder pattern block are symmetrically arranged with respect to the central axis of the tread.

[0011] In some of the embodiments, the depths of the transverse grooves and the shoulder transverse grooves are both 1 / 2-2 / 3 of the depth of the longitudinal main grooves, and reinforcing ribs are provided at the bottoms of the transverse grooves and the shoulder transverse grooves.

[0012] In some of the embodiments, one end of the transverse knife groove is connected to the adjacent longitudinal main groove, and the other end is a closed structure, the depth of the transverse knife groove is 2-4mm, and the width of the transverse knife groove is 0.6-1.5mm; one end of the shoulder knife groove is connected to the adjacent longitudinal main groove, and the other end is a closed structure, the depth of the shoulder knife groove is 2-4mm, and the width of the shoulder knife groove is 0.6-1.5mm.

[0013] In some of the embodiments, there is also an edge transverse groove arranged on the side of the shoulder pattern block, one end of the edge transverse groove is connected to one end of the shoulder transverse groove, and the other end thereof is a closed structure.

[0014] In some of the embodiments, the tread pattern adopts a variable pitch design, and the length difference between the long pitch and the short pitch of the pattern is 3-5 mm.

[0015] The utility model discloses a tire on the other hand. The tire tread is provided with the above-mentioned load-bearing radial tire pattern.

[0016] In some of the embodiments, the tire mouth portion adopts a straight line and an arc tangent structure, and the angle between the straight line and the horizontal direction is 53°-60°.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] (1) The utility model has a criss-cross pattern, and the arrangement of multiple longitudinal main grooves enables the tire to have good longitudinal and lateral grip with the road surface, thereby improving the tire's anti-skid and wet-slip performance; the transverse grooves that run through the pattern blocks give the tire good driving performance; the semi-closed transverse sipes and shoulder sipe structures can play a role in cutting the water film, reducing the residence time of the water film on the tire, making it convenient for the tire to discharge rainwater in a timely and effective manner when driving on rainy days, thereby enhancing the tire's anti-skid performance and improving its handling stability.

[0019] (2) The tread pattern of the utility model adopts a variable pitch design, with long and short pitches arranged in a disordered manner, thereby reducing the cavity resonance effect and reducing tire noise.

[0020] (3) The tire of the utility model makes adjustments to the bead area, changes the existing reverse arc design, and adjusts it to a straight line and arc tangent design, so that the material thickness of the bead heel area of ​​the tire is increased, which can effectively reduce the problem of exposed wire at the bead during tire vulcanization and avoid the deterioration of tire grip and affecting handling stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0022] Figure 1 A schematic diagram of the structure of the load-carrying radial tire pattern provided by an embodiment of the utility model;

[0023] Figure 2 The figure is a schematic diagram of the structure of the sub-mouth part of the existing tire;

[0024] Figure 3A schematic diagram of the structure of the tire mouth provided by the embodiment of the utility model;

[0025] Figure 4 It is a simplified schematic diagram of the geometric dimensions of the tread pattern;

[0026] In the accompanying drawings: 1, central longitudinal main groove, 2, middle longitudinal main groove, 3, shoulder longitudinal main groove, 4, first shoulder pattern block, 5, second shoulder pattern block, 6, first middle pattern block, 7, second middle pattern block, 8, first middle pattern block, 9, second middle pattern block, 10, shoulder transverse groove, 11, middle transverse groove, 12, central transverse groove, 13, side transverse groove, 14, shoulder sipe, 15, first middle sipe, 16, second middle sipe, 17, first middle sipe, 18, second middle sipe. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] In the description of the present utility model, it is necessary to understand that the orientations or positional relationships indicated by the terms "center", "lateral", "longitudinal", "upper", "lower", "inner", "outer", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. The terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", and "third" may explicitly or implicitly include one or more of the features. The term "longitudinal" refers to the direction in which the tire rolls; the term "lateral" refers to the direction perpendicular to the mid-plane of the tire.

[0029] The utility model embodiment provides a load-carrying radial tire pattern and a tire. Figure 1 Schematic diagram of the structure of the radial tire pattern according to the embodiment of the utility model. Figure 1As shown, the load-carrying radial tire pattern at least includes: five longitudinal main grooves arranged along the circumference of the tread, the longitudinal main grooves include a central longitudinal main groove 1 located at the center line of the tread, shoulder longitudinal main grooves 3 symmetrically arranged on both sides of the central longitudinal main groove 1, and a middle longitudinal main groove 2 located between the central longitudinal main groove 1 and the shoulder longitudinal main groove 3. By arranging the above-mentioned longitudinal main grooves, the tire has good longitudinal and lateral grip with the road surface, providing excellent adhesion performance and excellent high-speed performance. Among them, the width of the central longitudinal main groove 1 is 3-4mm narrower than the width of the shoulder longitudinal main groove 3, and the width of the middle longitudinal main groove 2 is 3-4mm narrower than the width of the shoulder longitudinal main groove 3. By arranging longitudinal main grooves of different widths, the tire crown can be prevented from being worn.

[0030] The load-bearing radial tire pattern of the embodiment of the utility model also includes a middle tread pattern group and a shoulder pattern group, wherein the middle tread pattern group includes multiple columns of middle strip pattern block groups, two adjacent columns of middle strip pattern block groups are separated by a longitudinal main groove, and a plurality of inclined transverse grooves are arranged at intervals on each column of middle strip pattern block groups, and the transverse grooves on the two adjacent columns of middle strip pattern block groups are arranged alternately and have opposite inclination directions, and the two ends of the transverse grooves are respectively connected to the adjacent longitudinal main grooves, and the depth of the transverse grooves is 1 / 2-2 / 3 of the depth of the longitudinal main grooves, and reinforcing ribs are arranged at the groove bottom of the transverse grooves; transverse knife grooves arranged alternately are arranged between adjacent transverse grooves, and the transverse knife grooves are arranged parallel to the corresponding transverse grooves, and the depth of the transverse knife grooves is 2-4mm, and the width of the transverse knife grooves is 0.6-1.5mm. The shoulder pattern group includes shoulder strip pattern block groups respectively arranged on both sides of the middle pattern group of the tread. A plurality of obliquely penetrating shoulder transverse grooves 10 are arranged at intervals on each row of shoulder strip pattern block groups. The depth of the shoulder transverse grooves 10 is 1 / 2-2 / 3 of the depth of the longitudinal main grooves. Reinforcement ribs are arranged at the groove bottom of the shoulder transverse grooves 10. Shoulder sipes 14 are arranged between adjacent shoulder transverse grooves 10. The shoulder transverse grooves 10 and the shoulder sipes 14 have the same direction as the transverse grooves on the adjacent middle strip pattern block groups. The above structural arrangement is conducive to enhancing the tire driving performance and can also reduce the tire rolling resistance to a certain extent. One end of the shoulder transverse groove 10 is connected to the adjacent longitudinal main groove; one end of the shoulder sipe 14 is connected to the adjacent longitudinal main groove, and the other end is a closed structure. The depth of the shoulder sipe 14 is 2-4mm, and the width of the shoulder sipe 14 is 0.6-1.5mm. Both the transverse sipes and the shoulder sipes 14 adopt a semi-closed structure, which can reduce the flow of air in the pattern and prevent longitudinal noise. It can also cut the water film and reduce the residence time of the water film on the tire, which is convenient for the tire to discharge rainwater in time and effectively when driving on rainy days, enhance the tire's anti-skid performance, and improve the tire's handling performance; moreover, the fine sipe structure is conducive to softening the tire surface when touching the ground, which helps to improve the tire's grip. At the same time, the pattern is too fine, which helps the tire dissipate heat without increasing the noise too much.

[0031] The load-carrying radial tire pattern of the embodiment of the utility model further includes a side transverse groove 13 arranged on the side of the shoulder pattern block, one end of the side transverse groove 13 is connected to one end of the shoulder transverse groove 10, and the other end is a closed structure, and the side transverse groove 13 and the shoulder transverse groove 10 form a Z-shaped through structure. The above-mentioned open shoulder design is conducive to heat dissipation of the tire shoulder and improves the driving durability of the tire.

[0032] The load-bearing radial tire pattern of the utility model embodiment divides the tire tread into a plurality of independent pattern blocks through a plurality of transverse grooves arranged in a pattern group in the middle of the tread, shoulder transverse grooves 10 arranged in a shoulder pattern group, and longitudinal main grooves. The depths of the transverse grooves and the shoulder transverse grooves 10 are both 1 / 2-2 / 3 of the depth of the longitudinal main grooves. Reinforcing ribs are arranged at the bottom of the transverse grooves and the shoulder transverse grooves 10, which effectively avoid the collapse and falling of the pattern blocks and reduce the energy loss caused by the deformation and displacement of the pattern blocks.

[0033] The middle stripe pattern block group of the load-carrying radial tire pattern of the embodiment of the utility model includes a first central pattern block 8 and a second central pattern block 9 located on both sides of the tread centerline, and the first central pattern block 8 and the second central pattern block 9 are arranged in a staggered symmetry with the tread center axis; a first middle pattern block 6 located outside the first central pattern block 8 and a second middle pattern block 7 located outside the second central pattern block 9, and the first middle pattern block 6 and the second middle pattern block 7 are arranged in a staggered symmetry with the tread center axis. The shoulder stripe pattern block group includes a first shoulder pattern block 4 and a second shoulder pattern block 5 located on both shoulders, respectively, and the first shoulder pattern block 4 and the second shoulder pattern block 5 are arranged in a staggered symmetry with the tread center axis.

[0034] The first central pattern block 8 of the embodiment of the utility model is provided with a plurality of oblique through central transverse grooves 12 , and first central sipes 17 and second central sipes 18 arranged alternately are provided between adjacent central transverse grooves 12 , and the first central sipes 17 and the second central sipes 18 are parallel to the corresponding central transverse grooves 12 .

[0035] The first middle pattern block 6 of the embodiment of the utility model is provided with a plurality of inclined middle transverse grooves 11, one end of the middle transverse groove 11 is connected with the middle longitudinal main groove 2, and the other end is connected with the shoulder longitudinal main groove 3. Staggered first middle sipes 15 and second middle sipes 16 are provided between adjacent middle transverse grooves 11, and the orientation of the first middle sipes 15 and the second middle sipes 16 is the same as that of the middle transverse grooves 11. Among them, one end of the first middle sipe 15 is connected with the adjacent shoulder longitudinal main groove 3, and the other end is a closed structure; one end of the second middle sipe 16 is connected with the adjacent middle longitudinal main groove 2, and the other end is a closed structure.

[0036] The tread pattern of the utility model adopts a variable pitch design, the length difference between the long pitch and the short pitch of the pattern is 3-5mm, and the tread pattern reduces the cavity resonance effect and reduces the tire noise by arranging the long and short pitches in a disordered manner.

[0037] The utility model provides a tire with the above-mentioned load-bearing radial tire pattern on the tread, and makes adjustments to the tire bead portion, changes the existing reverse arc design, and adjusts it to a straight line and circular arc tangent design, and the angle α between the straight line and the horizontal direction is 53°-60°. The above-mentioned structure increases the material thickness of the tire bead heel portion, which can effectively reduce the problem of exposed wire on the bead during tire vulcanization, and avoids the deterioration of tire grip and affecting the handling stability.

[0038] The tire crown includes a tread, a belt layer and an inner liner from the outside to the inside. During driving, when the tread is stretched, the inner liner is compressed; conversely, when the crown becomes flat, the tread is compressed and the inner liner is stretched; the above repeated deformation leads to energy dissipation. The belt layer is an intermediate layer with reinforcing cords, and the reinforcing cords make the belt layer neither stretchable nor compressible. The tire of the utility model adopts a multi-layer belt layer structure. Preferably, the tire includes a first belt layer, a second belt layer, a third belt layer and a fourth belt layer, wherein the first belt layer and the fourth belt layer both use 4+3×0.33CCST steel cords, and the second belt layer and the third belt layer both use 3+8×0.33ST steel cords, and the cord density is 48-60 strands / 100mm. The above structural arrangement enhances the rigidity of the tire crown and reduces deformation, thereby achieving the purpose of reducing rolling resistance. The tire belt structure of the utility model can also be arranged to include a first belt layer, a second belt layer, a third belt layer, and at least one zero-degree belt layer. In addition, the tire can also adopt a five-layer belt structure, and the zero-degree belt layer is infinitely wound.

[0039] The porosity of the tire tread design and the size of the tread blocks have a significant impact on the compressive stress and strain at the pattern, which in turn affects the rolling resistance. The average pressure in the contact area (the total road surface area under the tire surface including the void area) is close to the tire inflation pressure. The pressure generated on the tread blocks in the contact area depends on the porosity and the tire inflation pressure, that is, P contact =P tire / (1-Void), where P contact is the pressure generated on the tread block in the contact area, P tire is the tire inflation pressure, and Void is the void ratio. When the tread block is compressed vertically, it will stretch laterally because the rubber mixture is basically volume incompressible. Therefore, as the compressive strain increases, the compressive stiffness of the tread block increases. The effect depends on the aspect ratio of the tread block. In short, the compressive stiffness of a short and wide tread block increases much more than that of a tall and narrow tread block. Compressive strain ε 压缩=0.33(1-σ / e M10F ), σ is pressure, M 10 is the tensile stress measured at 10% strain, F is the aspect ratio, F = S / S', such as Figure 4 As shown, S is the ground contact area of ​​the pattern block, S1 is the area of ​​one side of the pattern block, S2 is the area of ​​the other side of the pattern block, and S'=2(S1+S2). The tire void ratio of the utility model is 20%, the aspect ratio of the shoulder pattern block is 0.6, and the aspect ratio of the middle pattern block is 0.54, which effectively reduces rolling resistance.

[0040] The above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the specific implementation methods of the utility model can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the utility model, which should be included in the scope of the technical solution for which protection is requested in the utility model.

Claims

1. A load-carrying radial tire pattern, characterized in that: include Multiple longitudinal main grooves are arranged along the circumference of the tread; The middle pattern group of the tread comprises a plurality of rows of middle strip pattern block groups, two adjacent rows of middle strip pattern block groups are separated by longitudinal main grooves, a plurality of inclined through transverse grooves are arranged at intervals on each row of middle strip pattern block groups, and the transverse grooves on two adjacent rows of middle strip pattern block groups are arranged in a staggered manner and have opposite inclination directions; staggered transverse sipes are arranged between adjacent transverse grooves on each row of middle strip pattern block groups, and the transverse sipes are parallel to the corresponding transverse grooves; The shoulder pattern group includes shoulder strip pattern block groups respectively arranged on both sides of the middle pattern group of the tread, and a plurality of inclined through shoulder transverse grooves are arranged at intervals on each row of shoulder strip pattern block groups; shoulder sipes are arranged between adjacent shoulder transverse grooves, and the shoulder transverse grooves and shoulder sipes have the same direction as the transverse grooves on the adjacent middle strip pattern block group.

2. The load-carrying radial tire pattern according to claim 1, characterized in that: The longitudinal main groove includes The central longitudinal main groove located at the center line of the tread, the shoulder longitudinal main grooves symmetrically arranged on both sides of the central longitudinal main groove, and the middle longitudinal main groove located between the central longitudinal main groove and the shoulder longitudinal main groove; Among them, the width of the central longitudinal main groove is 3-4 mm narrower than the width of the shoulder longitudinal main groove, and the width of the middle longitudinal main groove is 3-4 mm narrower than the width of the shoulder longitudinal main groove.

3. The load-carrying radial tire pattern according to claim 1, characterized in that: The middle stripe block group includes A first central pattern block and a second central pattern block are located on both sides of the center line of the tread, and the first central pattern block and the second central pattern block are symmetrically arranged with respect to the central axis of the tread; The first middle pattern block is located outside the first central pattern block and the second middle pattern block is located outside the second central pattern block. The first middle pattern block and the second middle pattern block are symmetrically arranged with respect to the central axis of the tread.

4. The load-carrying radial tire pattern according to claim 1, characterized in that: Shoulder rib block group includes The first shoulder pattern blocks and the second shoulder pattern blocks are respectively located on the shoulders at both sides, and the first shoulder pattern blocks and the second shoulder pattern blocks are symmetrically arranged with respect to the central axis of the tread.

5. The load-carrying radial tire pattern according to claim 1, characterized in that: The depths of the transverse grooves and shoulder transverse grooves are both 1 / 2-2 / 3 of the depth of the longitudinal main grooves, and reinforcing ribs are provided at the bottoms of the transverse grooves and shoulder transverse grooves.

6. The load-carrying radial tire pattern according to claim 1, characterized in that: One end of the transverse knife groove is connected to the adjacent longitudinal main groove, and the other end is a closed structure. The depth of the transverse knife groove is 2-4 mm, and the width of the transverse knife groove is 0.6-1.5 mm. One end of the shoulder knife groove is connected with the adjacent longitudinal main groove, and the other end is a closed structure. The depth of the shoulder knife groove is 2-4 mm, and the width of the shoulder knife groove is 0.6-1.5 mm.

7. The load-carrying radial tire pattern according to claim 1, characterized in that: It also includes an edge transverse groove arranged on the side of the shoulder pattern block, one end of the edge transverse groove is connected with one end of the shoulder transverse groove, and the other end is a closed structure.

8. The load-carrying radial tire pattern according to claim 1, characterized in that: The tread pattern adopts a variable pitch design, and the length difference between the long pitch and the short pitch of the pattern is 3-5mm.

9. A tire, characterized in that: The tire tread is provided with the load-bearing radial tire pattern described in any one of claims 1 to 8.

10. The tire according to claim 9, characterized in that: The tire mouth adopts a straight line and arc tangent structure, and the angle between the straight line and the horizontal direction is 53°-60°.

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