Tire tread structure and tire with same

Abstract

The utility model provides a tire tread structure and a tire with the same. The tire tread structure is arranged on a tire tread, the tire tread structure comprises transverse grooves, one end of each transverse groove extends to a tire shoulder of the tire so as to be communicated with the side portion of the tire, a preset distance H1 exists between the other end of each transverse groove and the center plane S of the tire, and the two sides of the center plane S are each provided with a plurality of transverse grooves; the plurality of transverse grooves are formed in the circumferential direction of the tire at intervals; the communication groove is located on one side of the central plane S and arranged between the two adjacent transverse grooves, and the communication groove is used for communicating the two adjacent transverse grooves; the first transverse groove and the central plane S are arranged at an interval, and one end of the first transverse groove communicates with the communicating groove; and / or the second transverse groove and the central plane S are arranged at an interval, and one end of the second transverse groove extends to the tire shoulder so as to be communicated with the side part of the tire. The solid tire for the ladder truck solves the problem that in the prior art, the service life of the solid tire for the ladder truck is short.

Description

Technical Field

[0001] The utility model relates to the technical field of tires, and in particular to a tire tread structure and a tire having the same. Background Art

[0002] At present, as an industrial vehicle, the tire components of a boom lift usually use solid tires. Compared with common household vehicle tires (pneumatic tires), although the solid tires for boom lifts do not have high comfort (driving noise), they have the advantages of large load bearing capacity, puncture resistance, small settlement deformation under load, can be parked for a long time and convenient for later maintenance, etc., and can adapt to the unique use scenarios of boom lifts.

[0003] However, the settlement deformation of the solid tires for boom lifts is still large under high loads, which affects the service life of the tires. Moreover, since the solid tires are completely filled with elastic rubber, during the load driving process of the solid tires, the heat generation inside is fast and it is not easy to dissipate heat. The solid tires with increased temperature are extremely easy to wear, further affecting the service life of the tires. Summary of the Utility Model

[0004] The main object of the present utility model is to provide a tire tread structure and a tire having the same, so as to solve the problem of short service life of the solid tires for boom lifts in the prior art.

[0005] To achieve the above object, according to one aspect of the present utility model, a tire tread structure is provided, which is arranged on the tread of a tire. The tire tread structure includes: transverse grooves, one end of the transverse grooves extends to the tire shoulder to communicate with the side of the tire, and the other end of the transverse grooves has a preset distance H1 from the center plane S of the tire. A plurality of transverse grooves are arranged on both sides of the center plane S at intervals in the circumferential direction of the tire; connecting grooves, located on one side of the center plane S and arranged between two adjacent transverse grooves, and the connecting grooves are used to connect two adjacent transverse grooves; first transverse grooves, arranged at intervals from the center plane S, and one end of the first transverse grooves is connected to the connecting grooves; and / or, second transverse grooves, arranged at intervals from the center plane S, and one end of the second transverse grooves extends to the tire shoulder to communicate with the side of the tire.

[0006] Furthermore, the tire tread structure includes a plurality of equal pitch tread patterns arranged along the circumferential direction of the tire, and the equal pitch tread patterns have a pitch P; wherein, the transverse grooves are arranged in an arc shape, and the radius R of the transverse grooves is the same as the pitch P.

[0007] Furthermore, the tire tread structure has a half-width W1, and the following relationship is satisfied between the preset distance H1 and the half-width W1: 0.145W1 ≤ H1 ≤ 0.345W1; and / or, the extending direction of one end of the transverse groove away from the central plane S is perpendicular to the circumferential direction of the tire; and / or, the inner wall of one end of the transverse groove close to the central plane S is arc-shaped.

[0008] Furthermore, along the direction from the side portion of the tire to the central plane S, the width of the transverse groove gradually decreases; and / or, the transverse groove includes a plurality of interconnected sub-grooves, and along the direction from the side portion of the tire to the central plane S, the depths of the plurality of sub-grooves gradually decrease.

[0009] Furthermore, the connecting groove is a straight groove, and the connecting groove is arranged at a first angle A1 with respect to the circumferential direction of the tire, and the first angle A1 satisfies: 8° ≤ A1 ≤ 12°; and / or, the inner wall of the connecting groove is arc-shaped.

[0010] Furthermore, the first transverse groove is located on the side of the connecting groove close to the central plane S, and the second transverse groove is located on the side of the connecting groove away from the central plane S.

[0011] Furthermore, there is a preset distance H2 between one end of the first transverse groove away from the connecting groove and the central plane S, and the following relationship is satisfied between the preset distance H2 and the half-width W1 of the tire tread structure: 0.127W1 ≤ H2 ≤ 0.327W1;

[0012] The first transverse groove is a straight groove, and the extending direction of the first transverse groove is arranged at a second angle A2 with respect to the circumferential direction of the tire, and the second angle A2 satisfies: 50° ≤ A2 ≤ 70°; the inner wall of one end of the first transverse groove close to the central plane S has a plane B, a chamfer is provided at the connection between the straight groove wall of the first transverse groove and the plane B, and the plane B is parallel to the central plane S; a chamfer is provided at the connection between the straight groove wall of the first transverse groove and the groove bottom of the first transverse groove.

[0013] Furthermore, the second transverse groove is arc-shaped, the extending direction of one end of the second transverse groove away from the central plane S is perpendicular to the circumferential direction of the tire, and the protruding directions of the second transverse grooves on both sides of the central plane S are opposite; and / or, the groove bottom of the second transverse groove is arc-shaped.

[0014] Furthermore, one groove wall of the transverse groove is arranged at a third angle A3 with respect to the normal of the transverse groove, and the third angle A3 satisfies: 3° ≤ A3 ≤ 8°, the other groove wall of the transverse groove is arranged at a fourth angle A4 with respect to the normal of the transverse groove, and the fourth angle A4 satisfies: 3° ≤ A4 ≤ 8°, and a chamfer is provided at the connection between the groove wall and the groove bottom of the transverse groove.

[0015] According to another aspect of the present invention, a tire is provided, and the tire includes the above-mentioned tire tread structure.

[0016] Applying the technical solution of the present utility model, the tire tread structure is arranged on the tread of the tire. One end of the transverse groove of the tire tread structure extends to the tire shoulder to communicate with the side portion of the tire. There is a preset distance H1 between the other end of the transverse groove and the center plane S of the tire. A plurality of transverse grooves are arranged on both sides of the center plane S, and the plurality of transverse grooves are arranged at intervals along the circumferential direction of the tire. The communication groove is located on one side of the center plane S and is arranged between two adjacent transverse grooves. The communication groove is used to communicate two adjacent transverse grooves. The first transverse groove is arranged at an interval from the center plane S, and one end of the first transverse groove communicates with the communication groove; and / or, the second transverse groove is arranged at an interval from the center plane S, and one end of the second transverse groove extends to the shoulder to communicate with the side portion of the tire. In this way, each groove of the tire tread structure is actually distributed on both sides of the center plane S, that is, the center plane S of the tire tread structure is a whole structure, so as to enhance the rigidity of the core contact position (at the center plane S) between the tire tread structure and the ground, thereby reducing the settlement deformation of the tire tread structure and extending the service life of the tire. At the same time, the transverse grooves, the first transverse groove and the second transverse groove for improving the anti-slip performance and traction performance of the tire can all communicate with the side portion of the tire, and two adjacent transverse grooves can also communicate through the communication groove, so that the heat generated during the running of the tire can be quickly taken away by the air flow to the side portion of the tire, avoiding the problem of abnormal wear caused by the tire heating up due to heat accumulation, further extending the service life of the tire, and thus solving the problem of the short service life of the solid tire for aerial work vehicles in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The specification drawings forming a part of this application are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0018] Figure 1 Shows a partial front view of an embodiment of the tire tread structure according to the present utility model;

[0019] Figure 2 Shows Figure 1 The front view of the tire tread structure in after removing the shoulder;

[0020] Figure 3 Shows Figure 2 The cross-sectional view of the tire tread structure in at J-J;

[0021] Figure 4 Shows Figure 2 The cross-sectional view of the tire tread structure in at C-C;

[0022] Figure 5 Shows Figure 2Cross-sectional view at D-D of the tire tread structure in

[0023] Figure 6 shows Figure 2 Cross-sectional view at E-E of the tire tread structure in

[0024] Figure 7 shows Figure 2 Cross-sectional view at F-F of the tire tread structure in

[0025] Figure 8 shows Figure 2 Cross-sectional view at G-G of the tire tread structure in

[0026] Figure 9 shows Figure 2 Cross-sectional view at I-I of the tire tread structure in

[0027] Among them, the above-mentioned drawings include the following reference numerals:

[0028] 10, transverse groove; 11, sub-groove; 20, connecting groove; 30, first transverse groove; 40, second transverse groove; 50, equal pitch tread portion. Detailed implementation mode

[0029] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the drawings and in combination with the embodiments.

[0030] It should be pointed out that, unless otherwise specified, all technical and scientific terms used in the present application have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present application belongs.

[0031] In the present invention, unless otherwise stated, the orientation terms such as "upper, lower" are usually in the direction shown in the drawings, or in the vertical, perpendicular or gravitational direction; similarly, for the convenience of understanding and description, "left, right" are usually left and right as shown in the drawings; "inside, outside" refer to the inside and outside relative to the contour of each component itself, but the above orientation terms do not limit the present invention.

[0032] In order to solve the problem of the short service life of the solid tires for aerial work vehicles in the prior art, the present application provides a tire tread structure and a tire having the same.

[0033] Such as Figures 1 to 9As shown, a tire tread structure is disposed on the tread of a tire. The tire tread structure includes transverse grooves 10, connecting grooves 20, first transverse grooves 30 and second transverse grooves 40. One end of the transverse groove 10 extends to the shoulder of the tire to communicate with the side portion of the tire. There is a preset distance H1 between the other end of the transverse groove 10 and the center plane S of the tire. A plurality of transverse grooves 10 are provided on both sides of the center plane S, and the plurality of transverse grooves 10 are arranged at intervals in the circumferential direction of the tire. The connecting groove 20 is located on one side of the center plane S and is disposed between two adjacent transverse grooves 10. The connecting groove 20 is used to connect two adjacent transverse grooves 10. The first transverse groove 30 is spaced from the center plane S, and one end of the first transverse groove 30 communicates with the connecting groove 20; and / or, the second transverse groove 40 is spaced from the center plane S, and one end of the second transverse groove 40 extends to the shoulder to communicate with the side portion of the tire.

[0034] Applying the technical solution of this embodiment, the tire tread structure is disposed on the tread of the tire. One end of the transverse groove 10 of the tire tread structure extends to the shoulder of the tire to communicate with the side portion of the tire. There is a preset distance H1 between the other end of the transverse groove 10 and the center plane S of the tire. A plurality of transverse grooves 10 are provided on both sides of the center plane S, and the plurality of transverse grooves 10 are arranged at intervals in the circumferential direction of the tire. The connecting groove 20 is located on one side of the center plane S and is disposed between two adjacent transverse grooves 10. The connecting groove 20 is used to connect two adjacent transverse grooves 10. The first transverse groove 30 is spaced from the center plane S, and one end of the first transverse groove 30 communicates with the connecting groove 20; and / or, the second transverse groove 40 is spaced from the center plane S, and one end of the second transverse groove 40 extends to the shoulder to communicate with the side portion of the tire. In this way, each groove of the tire tread structure is actually distributed on both sides of the center plane S, that is, the center plane S of the tire tread structure is a whole structure, so as to enhance the rigidity of the core contact position (at the center plane S) between the tire tread structure and the ground, reduce the settlement deformation of the tire tread structure, and thus extend the service life of the tire. At the same time, the transverse grooves 10, the first transverse grooves 30 and the second transverse grooves 40 for improving the anti-slip performance and traction performance of the tire can all communicate with the side portion of the tire, and two adjacent transverse grooves 10 can also be connected through the connecting groove 20, so that the heat generated during the running of the tire can be quickly taken away by the air flow to the side portion of the tire, avoiding the abnormal wear problem caused by the tire heating up due to heat accumulation, further extending the service life of the tire, and thus solving the problem of the short service life of the solid tire for aerial work vehicles in the prior art.

[0035] As Figure 1 and Figure 2As shown, fillets are actually provided at the connection points of the respective grooves (the transverse groove 10, the communication groove 20, the first transverse groove 30, and the second transverse groove 40) in this embodiment, with smooth overall transitions, which can effectively avoid the problem of block chipping of the tread blocks caused by sharp corners hitting foreign objects, further extending the service life of the tire.

[0036] As Figure 1 and 2 shown, the tire tread structure includes a plurality of equally pitched tread portions 50 arranged circumferentially along the tire, and the equally pitched tread portion 50 has a pitch P. Among them, the transverse groove 10 is arranged in an arc shape, and the radius R of the transverse groove 10 is the same as the pitch P. In this way, at the same size, the arc-shaped transverse groove 10 has a larger contact area with the ground compared to a straight groove, further improving the traction performance of the tire. At the same time, the above setting of its radius R enables the shape of the transverse groove 10 to match the pitch of the tire, so as to further enhance the improvement effect of its traction performance on the tire.

[0037] Optionally, the tire tread structure has a half-width W1, and the following relationship is satisfied between the preset distance H1 and the half-width W1: 0.145W1 ≤ H1 ≤ 0.345W1; and / or, the extending direction of the end of the transverse groove 10 away from the central plane S is perpendicular to the circumferential direction of the tire; and / or, the inner wall of the end of the transverse groove 10 close to the central plane S is arranged in an arc shape. In this way, the above setting of the preset distance H1 ensures that the size of the whole tread block at the central plane S is large enough to ensure that the tread block at the central plane S has sufficient rigidity, reducing the settlement deformation of the tire tread structure. At the same time, the above settings of the extending direction of the transverse groove 10 and the arc-shaped inner wall both contribute to the discharge of foreign objects inside the transverse groove 10, thereby improving the stone-discharging performance of the tire, avoiding unnecessary wear, and extending the service life of the tire.

[0038] In this embodiment, the preset distance H1 is 0.254W1.

[0039] As Figure 1 , Figure 2 and Figure 3 shown, along the direction from the side of the tire to the central plane S, the width of the transverse groove 10 gradually decreases; and / or, the transverse groove 10 includes a plurality of interconnected sub-grooves 11, and along the direction from the side of the tire to the central plane S, the depths of the plurality of sub-grooves 11 gradually decrease. In this way, after foreign objects are stuck in the transverse groove 10, the above settings are beneficial for the foreign objects to be discharged along the direction from the central plane S to the side of the tire, that is, as the foreign objects move, the extrusion force they receive from the inner wall of the groove becomes smaller and smaller, further improving the stone-discharging performance and self-cleaning performance of the tire, and extending the service life of the tire.

[0040] In this embodiment, the number of sub-grooves 11 is four.

[0041] It should be noted that the number of the sub-grooves 11 is not limited to this and can be adjusted according to the working conditions and usage requirements. Optionally, there are two, or three, or five, or six, or more sub-grooves 11.

[0042] Optionally, the bottom wall of the sub-groove 11 can be set as an inclined surface to further facilitate the discharge of foreign matters.

[0043] As Figure 1 、 Figure 2 and Figure 7 shown, the communication groove 20 is a straight groove, and the communication groove 20 is arranged at a first included angle A1 with respect to the circumferential direction of the tire, and the first included angle A1 satisfies: 8° ≤ A1 ≤ 12°; and / or, the inner wall of the communication groove 20 is arranged in an arc shape. In this way, on the one hand, the above arrangement makes the extension direction of the communication groove 20 more appropriate to ensure that the airflow can smoothly flow in the communication groove 20 during the rolling of the tire, thereby improving the heat dissipation performance of the tire; on the other hand, the communication groove 20 with an arc-shaped inner wall can further reduce the possibility of groove stone jamming and further extend the service life of the tire.

[0044] Optionally, the first transverse groove 30 is located on one side of the communication groove 20 close to the central plane S, and the second transverse groove 40 is located on the side of the communication groove 20 away from the central plane S. In this way, the above arrangement makes the first transverse groove 30 and the second transverse groove 40 for improving the traction performance of the tire more evenly distributed on the tire tread, so as to further improve the anti-slip performance and traction performance of the tire.

[0045] As Figure 1 、 Figure 2 and Figure 8As shown, there is a preset distance H2 between one end of the first transverse groove 30 far from the communication groove 20 and the central plane S, and the following relationship is satisfied between the preset distance H2 and the half-width W1 of the tire tread structure: 0.127W1 ≤ H2 ≤ 0.327W1; the first transverse groove 30 is a straight groove, and the extending direction of the first transverse groove 30 forms a second included angle A2 with the circumferential direction of the tire, and the second included angle A2 satisfies: 50° ≤ A2 ≤ 70°; the inner wall of one end of the first transverse groove 30 close to the central plane S has a plane B, a chamfer is provided at the connection between the straight groove wall of the first transverse groove 30 and the plane B, and the plane B is parallel to the central plane S; a chamfer is provided at the connection between the straight groove wall of the first transverse groove 30 and the groove bottom of the first transverse groove 30. In this way, on the one hand, the above settings can avoid the first transverse groove 30 affecting the rigidity of the tread blocks at the central plane S and ensure that the tread blocks at the central plane S have a sufficiently large size to reduce the settlement deformation of the tire and extend the service life of the tire; on the other hand, the setting of the second included angle A2, the plane B and the chamfer can, while ensuring that the first transverse groove 30 can improve the traction performance of the tire, reduce the risk of foreign matter entrapment and further extend the service life of the tire.

[0046] In this embodiment, the second included angle A2 is 60°.

[0047] In this embodiment, the groove wall of the first transverse groove 30 is perpendicular to the ground to reduce the risk of stone entrapment.

[0048] As Figure 1 、 Figure 2 and Figure 9 As shown, the second transverse groove 40 is arc-shaped, the extending direction of one end of the second transverse groove 40 far from the central plane S is perpendicular to the circumferential direction of the tire, and the protruding directions of the second transverse grooves 40 on both sides of the central plane S are opposite; and / or, the groove bottom of the second transverse groove 40 is arc-shaped. In this way, the above settings can ensure that the second transverse groove 40 has a sufficiently high ability to improve the traction performance, and the arc-shaped groove bottom is beneficial to reducing the risk of stone entrapment in the second transverse groove 40 and extending the service life of the tire.

[0049] As Figure 1 、 Figure 2 、 Figure 4 、 Figure 5 and Figure 6As shown, one groove wall of the transverse groove 10 is arranged at a third included angle A3 with the normal of the transverse groove 10, and the third included angle A3 satisfies: 3° ≤ A3 ≤ 8°. The other groove wall of the transverse groove 10 is arranged at a fourth included angle A4 with the normal of the transverse groove 10, and the fourth included angle A4 satisfies: 3° ≤ A4 ≤ 8°. A chamfer is provided at the connection of the groove wall and the groove bottom of the transverse groove 10. In this way, the above settings are beneficial to reducing the risk of stone jamming in the transverse groove 10, so as to improve the anti-stone jamming performance and self-cleaning performance of the tire. At the same time, the settings of the third included angle A3 and the fourth included angle A4 can increase the grounding area of the tire during the driving and deformation of the tire (that is, during the deformation of the tire, the groove wall of the transverse groove 10 can contact the driving surface), so as to enhance the wear resistance of the tire while improving the handling performance of the tire and reducing the occurrence of abnormal wear conditions.

[0050] In this embodiment, the bottoms of a large number of grooves all adopt an arc design, which can not only reduce the risk of stone jamming but also avoid the occurrence of groove bottom cracking and prevent the appearance of block chipping of the tread blocks, further improving the service life of the tire.

[0051] This application also provides a tire (not shown), and the tire includes the above-mentioned tire tread structure.

[0052] From the above description, it can be seen that the above embodiments of the present utility model achieve the following technical effects:

[0053] The tire tread structure is disposed on the tread of the tire. One end of the transverse groove of the tire tread structure extends to the tire shoulder to communicate with the side portion of the tire. There is a preset distance H1 between the other end of the transverse groove and the center plane S of the tire. A plurality of transverse grooves are disposed on both sides of the center plane S, and the plurality of transverse grooves are arranged at intervals in the circumferential direction of the tire. The connecting groove is located on one side of the center plane S and is disposed between two adjacent transverse grooves. The connecting groove is used to connect two adjacent transverse grooves. The first transverse groove is spaced from the center plane S, and one end of the first transverse groove communicates with the connecting groove; and / or, the second transverse groove is spaced from the center plane S, and one end of the second transverse groove extends to the shoulder to communicate with the side portion of the tire. In this way, each groove of the tire tread structure is actually distributed on both sides of the center plane S, that is, the center plane S of the tire tread structure is a monolithic structure, so as to enhance the rigidity of the core contact position (at the center plane S) between the tire tread structure and the ground, thereby reducing the settlement deformation of the tire tread structure and extending the service life of the tire. At the same time, the transverse grooves, the first transverse groove and the second transverse groove for enhancing the anti-slip performance and traction performance of the tire can all communicate with the side portion of the tire, and two adjacent transverse grooves can also be communicated through the connecting groove, so that the heat generated during the running of the tire can be quickly taken away by the air flow to the side portion of the tire, avoiding the abnormal wear problem caused by the heat accumulation and temperature rise of the tire, further extending the service life of the tire, and thus solving the problem of the short service life of the solid tire for aerial work vehicles in the prior art.

[0054] Obviously, the above-described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0055] It should be noted that the terms used herein are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0056] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0057] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, various modifications and variations can be made to the present utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A tire tread structure is provided on the tread of a tire, characterized in that, The tire tread structure includes: Transverse grooves (10), one end of the transverse grooves (10) extends to the tire shoulder to communicate with the side of the tire, and there is a preset distance H1 between the other end of the transverse grooves (10) and the center plane S of the tire. A plurality of transverse grooves (10) are provided on both sides of the center plane S, and the plurality of transverse grooves (10) are arranged at intervals in the circumferential direction of the tire; Connecting grooves (20), located on one side of the center plane S and arranged between two adjacent transverse grooves (10), and the connecting grooves (20) are used to connect two adjacent transverse grooves (10); First transverse grooves (30), arranged at an interval from the center plane S, and one end of the first transverse grooves (30) is communicated with the connecting grooves (20); and / or, Second transverse grooves (40), arranged at an interval from the center plane S, and one end of the second transverse grooves (40) extends to the tire shoulder to communicate with the side of the tire.

2. The tire tread structure according to claim 1, characterized in that, The tire tread structure includes a plurality of equi-pitch tread portions (50) arranged along the circumferential direction of the tire, and the equi-pitch tread portions (50) have a pitch P; wherein, the transverse grooves (10) are arranged in an arc shape, and the radius R of the transverse grooves (10) is consistent with the pitch P.

3. The tire tread structure according to claim 2, wherein The tire tread structure has a half-width W1, and the following is satisfied between the preset distance H1 and the half-width W1: 0.145W1 ≤ H1 ≤ 0.345W1; and / or, The extending direction of the end of the transverse grooves (10) away from the center plane S is perpendicular to the circumferential direction of the tire; and / or, The inner wall of the end of the transverse grooves (10) close to the center plane S is arranged in an arc shape.

4. The tire tread structure according to claim 3, wherein In the direction from the side of the tire to the center plane S, the width of the transverse grooves (10) gradually decreases; and / or, The transverse grooves (10) include a plurality of interconnected sub-grooves (11), and in the direction from the side of the tire to the center plane S, the depths of the plurality of sub-grooves (11) gradually decrease.

5. The tire tread structure according to claim 1, wherein The connecting grooves (20) are linear grooves, and the connecting grooves (20) are arranged at a first included angle A1 with the circumferential direction of the tire, and the first included angle A1 satisfies: 8° ≤ A1 ≤ 12°; and / or, The inner wall of the connecting grooves (20) is arranged in an arc shape.

6. The tire tread structure according to claim 1, wherein The first transverse grooves (30) are located on the side of the connecting grooves (20) close to the center plane S, and the second transverse grooves (40) are located on the side of the connecting grooves (20) away from the center plane S.

7. The tire tread structure according to claim 6, wherein One end of the first transverse groove (30) away from the communication groove (20) has a preset distance H2 from the central plane S, and the following is satisfied between the preset distance H2 and the half-width W1 of the tire tread structure: 0.127W1 ≤ H2 ≤ 0.327W1; The first transverse groove (30) is a straight groove, and the extension direction of the first transverse groove (30) forms a second angle A2 with the circumferential direction of the tire, and the second angle A2 satisfies: 50° ≤ A2 ≤ 70°; The inner wall of one end of the first transverse groove (30) close to the central plane S has a plane B, a chamfer is provided at the connection between the straight groove wall of the first transverse groove (30) and the plane B, and the plane B is parallel to the central plane S; A chamfer is provided at the connection between the straight groove wall of the first transverse groove (30) and the groove bottom of the first transverse groove (30).

8. The tire tread structure according to claim 6, wherein The second transverse groove (40) is arc-shaped, the extension direction of one end of the second transverse groove (40) away from the central plane S is perpendicular to the circumferential direction of the tire, and the protruding directions of the second transverse grooves (40) on both sides of the central plane S are opposite; and / or, The groove bottom of the second transverse groove (40) is arc-shaped.

9. The tire tread structure according to claim 1, characterized in that, One groove wall of the transverse groove (10) forms a third angle A3 with the normal of the transverse groove (10), and the third angle A3 satisfies: 3° ≤ A3 ≤ 8°, the other groove wall of the transverse groove (10) forms a fourth angle A4 with the normal of the transverse groove (10), and the fourth angle A4 satisfies: 3° ≤ A4 ≤ 8°, and a chamfer is provided at the connection between the groove wall and the groove bottom of the transverse groove (10).

10. A tire, characterized in that, The tire includes the tire tread structure according to any one of claims 1 to 9.

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