Tire

Abstract

The utility model provides a kind of tire, the tread of tire is provided with pattern structure, multiple longitudinal grooves of pattern structure are along the width direction of tire interval arrangement, to separate tread into two shoulder pattern parts and multiple intermediate pattern parts between two shoulder pattern parts;First communication groove is set on shoulder pattern part, and the two ends of first communication groove are respectively communicated with the shoulder of tire and longitudinal groove;Second communication groove is set on intermediate pattern part, and second communication groove includes first groove and second groove, which are communicated with each other, and the end of first groove and second groove, which are away from each other, is respectively communicated with two adjacent longitudinal grooves;Wherein, second groove, at least part longitudinal groove and first communication groove are sequentially communicated to form heat dissipation groove, and the groove width of heat dissipation groove gradually increases along the arrangement direction from second groove to first communication groove.The utility model effectively solves the problem of poor heat dissipation performance of mine wide-body dump truck tire in the prior art.

Description

Technical Field

[0001] This utility model relates to the field of tire technology, and more specifically, to a tire. Background Technology

[0002] Currently, wide-body dump trucks for mining, as a type of heavy-duty transportation equipment, are widely used in harsh working environments such as open-pit mines and large-scale earthwork projects. Due to their heavy load capacity, high load capacity, and complex operating conditions, extremely high requirements are placed on the grip and wear resistance of their tires.

[0003] However, traditional tires typically use a block pattern structure to increase the proportion of tread blocks, thereby achieving wear resistance and cut resistance. Since mining wide-body dump trucks drive on roads with piled-up gravel for a long time, friction generates heat, leading to heat accumulation. The block pattern structure easily causes the tire to generate a lot of heat, reducing the tire's heat dissipation performance. Utility Model Content

[0004] The main purpose of this invention is to provide a tire that solves the problem of poor heat dissipation performance of existing wide-body dump truck tires for mining.

[0005] To achieve the above objectives, this utility model provides a tire with a tread pattern structure, comprising: multiple longitudinal grooves, each extending circumferentially along the tire, the multiple longitudinal grooves being spaced apart along the width of the tire to divide the tread into two shoulder tread portions and multiple intermediate tread portions located between the two shoulder tread portions; a first connecting groove disposed on the shoulder tread portion, the two ends of the first connecting groove being connected to the tire shoulder and the longitudinal grooves respectively; and a second connecting groove disposed on the intermediate tread portions, the second connecting groove comprising a first groove and a second groove that are interconnected, the ends of the first groove and the second groove that are away from each other being connected to two adjacent longitudinal grooves respectively; wherein, the second groove, at least a portion of the longitudinal grooves, and the first connecting groove are sequentially connected to form a heat dissipation groove, and the width of the heat dissipation groove gradually increases along the arrangement direction from the second groove to the first connecting groove.

[0006] Furthermore, the first groove includes a first sub-groove and a second sub-groove that are interconnected. The end of the first sub-groove away from the second sub-groove is connected to a longitudinal groove, and the end of the second sub-groove away from the first sub-groove is connected to the second groove. The first sub-groove and the second sub-groove are set at an angle. The second sub-groove is set at a first angle A1 with respect to the circumferential direction of the tire. The first angle A1 satisfies: 60°≤A1≤70°.

[0007] Furthermore, the extension direction of one sidewall of the second trench is consistent with the extension direction of the second sub-trench, and the extension direction of the other sidewall of the second trench is set at an angle to the extension direction of the second sub-trench.

[0008] Furthermore, the pattern structure also includes: a first reinforcing structure, which is disposed at the bottom wall of the second sub-groove, and the two ends of the first reinforcing structure are connected to the two side walls of the second sub-groove; wherein, the height H1 of the first reinforcing structure and the groove depth D1 of the second sub-groove satisfy the following condition: 0.3D1≤H1≤0.4D1.

[0009] Furthermore, there are multiple second connecting grooves, which are spaced apart along the circumference of the tire. The tread structure also includes: lateral grooves, with a lateral groove between two adjacent second connecting grooves. The lateral groove includes a first lateral groove and a second lateral groove that are interconnected. The end of the first lateral groove away from the second lateral groove is connected to a longitudinal groove located on one side of the middle tread portion. The end of the second lateral groove away from the first lateral groove is spaced apart from a longitudinal groove located on the other side of the middle tread portion. The first lateral groove and the second lateral groove are set at an angle. The second lateral groove is set at a second angle A2 with the circumference of the tire, and the second angle A2 satisfies: 60°≤A2≤70°.

[0010] Furthermore, the pattern structure also includes: a second reinforcing structure, which is disposed at the bottom wall of the first transverse groove, and the two ends of the second reinforcing structure are respectively connected to the two side walls of the first transverse groove; wherein, the height H2 of the second reinforcing structure and the groove depth D2 of the first transverse groove satisfy: 0.3D2≤H2≤0.4D2.

[0011] Furthermore, the second transverse groove includes a first sub-transverse groove and a second sub-transverse groove that are interconnected. The end of the first sub-transverse groove that is away from the second sub-transverse groove is connected to the first transverse groove. The bottom wall of the second sub-transverse groove is set at a third included angle A3 with the bottom wall of the first sub-transverse groove. The third included angle A3 satisfies: 140°≤A3≤145°.

[0012] Furthermore, there are multiple first connecting grooves, which are spaced apart along the circumference of the tire. The tread structure also includes a heat dissipation recess, which is disposed between two adjacent first connecting grooves. One end of the heat dissipation recess is spaced apart from the longitudinal groove, and the other end of the heat dissipation recess is spaced apart from the tire shoulder.

[0013] Furthermore, the tread structure also includes: a heat dissipation longitudinal groove, which is provided on the middle tread section and extends along the circumference of the tire; wherein the heat dissipation longitudinal groove is connected to the second sub-groove and the second transverse groove.

[0014] Furthermore, the contact portion of the tire with the driving surface has a width T, and the intermediate tread portion has a width W11; wherein, the projected width W21 of the first connecting groove in the width direction of the tire satisfies the following condition with respect to width T: 0.38T≤W21≤0.42T; and / or, the projected width W22 of the first sub-groove in the width direction of the tire satisfies the following condition with respect to width T: 0.15T≤W22≤0.19T; and / or, the projected width W23 of the first lateral groove in the width direction of the tire satisfies the following condition with respect to width T: 0.15T≤W23 ≤0.19T; and / or, the projected width W24 of the second sub-groove in the width direction of the tire satisfies the following condition between its width and width W11: 0.58W11≤W24≤0.62W11; and / or, the projected width W25 of the second lateral groove in the width direction of the tire satisfies the following condition between its width and width W11: 0.58W11≤W25≤0.62W11; and / or, the groove width W31 of the second sub-groove satisfies the following condition: 5mm≤W31≤8mm; and / or, the groove width W32 of the second lateral groove satisfies the following condition: 5mm≤W32≤8mm.

[0015] Applying the technical solution of this utility model, the tire tread is provided with a tread structure. Each longitudinal groove of the tread structure extends circumferentially along the tire, and multiple longitudinal grooves are spaced apart along the width of the tire to divide the tread into two shoulder tread portions and multiple intermediate tread portions located between the two shoulder tread portions. A first connecting groove is provided on the shoulder tread portion, and its two ends are respectively connected to the tire shoulder and the longitudinal grooves. A second connecting groove is provided on the intermediate tread portions, and the second connecting groove includes a first groove and a second groove that are interconnected. The ends of the first groove and the second groove that are furthest from each other are respectively connected to two adjacent longitudinal grooves. The second groove, at least some of the longitudinal grooves, and the first connecting groove are sequentially connected to form a heat dissipation groove. Along the arrangement direction from the second groove to the first connecting groove, the width of the heat dissipation groove gradually increases. Thus, when a mining wide-body dump truck travels for a long time on a road surface piled with gravel, the multiple longitudinal grooves, the first connecting groove, and the second connecting groove can ensure smooth airflow, guaranteeing the reliability of tire ventilation and heat dissipation. Meanwhile, the second groove is correspondingly arranged to the first connecting groove, so that the second groove and the first connecting groove are connected by longitudinal grooves and form a heat dissipation groove. The gradually increasing width of the heat dissipation groove increases the force and speed of airflow through the narrower parts, allowing airflow and heat to pass through more quickly. This ensures the reliability of heat dissipation in the central area of ​​the tire tread where the main force is applied, improves the tire's heat dissipation performance, and thus solves the problem of poor heat dissipation performance in existing mining wide-body dump truck tires. At the same time, the arrangement of multiple longitudinal grooves, the first connecting groove, and the second connecting groove can, on the one hand, reduce the rigidity of the tire tread blocks, ensuring traction and grip between the tire and the road surface, and ensuring the tire's driving stability and handling stability; on the other hand, it can expel water and mud accumulated between the tire and the road surface, ensuring the tire's self-cleaning performance. Attached Figure Description

[0016] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0017] Figure 1 A partial structural schematic diagram of a tire tread pattern according to the present invention is shown.

[0018] Figure 2 A partial structural schematic diagram of Embodiment 2 of the tire tread structure according to the present invention is shown;

[0019] Figure 3 It shows Figure 1 A cross-sectional view of the pattern structure at point BB;

[0020] Figure 4It shows Figure 1 A cross-sectional view of the pattern structure at point C;

[0021] Figure 5 It shows Figure 1 A cross-sectional view of the GG section of the pattern structure in the image;

[0022] Figure 6 It shows Figure 1 A cross-sectional view of the DD section of the pattern structure in the image;

[0023] Figure 7 It shows Figure 1 A cross-sectional view of the JJ section of the pattern structure in the image;

[0024] Figure 8 It shows Figure 1 A cross-sectional view of the EE section of the pattern structure in the image;

[0025] Figure 9 It shows Figure 1 A cross-sectional view of the pattern structure at point FF;

[0026] Figure 10 It shows Figure 1 A cross-sectional view of the MM section of the pattern structure.

[0027] The above figures include the following reference numerals:

[0028] 10. Longitudinal trenches;

[0029] 20. Tire shoulder pattern area;

[0030] 30. The central pattern section;

[0031] 40. First connecting trench;

[0032] 50. Second connecting trench; 51. First trench; 511. First sub-trench; 512. Second sub-trench; 52. Second trench;

[0033] 60. First reinforcing structure;

[0034] 70. Transverse groove; 71. First transverse groove; 72. Second transverse groove;

[0035] 80. Second reinforcing structure;

[0036] 90. Heat dissipation recess;

[0037] 100. Heat dissipation longitudinal trench. Detailed Implementation

[0038] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0039] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0040] In this utility model, unless otherwise stated, directional terms such as "upper" and "lower" are generally used in relation to the direction shown in the accompanying drawings, or in relation to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" are generally used in relation to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0041] To address the problem of poor heat dissipation performance in existing wide-body dump truck tires for mining, this application provides a tire.

[0042] Example 1

[0043] like Figure 1 , Figures 3 to 10 As shown, the tire tread has a tread pattern, which includes multiple longitudinal grooves 10, a first connecting groove 40, and a second connecting groove 50. Each longitudinal groove 10 extends circumferentially along the tire, and the multiple longitudinal grooves 10 are spaced apart along the width of the tire to divide the tread into two shoulder tread portions 20 and multiple intermediate tread portions 30 located between the two shoulder tread portions 20. The first connecting groove 40 is located on the shoulder tread portion 20, and its two ends are connected to the tire shoulder and the longitudinal grooves 10, respectively. The second connecting groove 50 is located on the intermediate tread portions 30, and the second connecting groove 50 includes a first groove 51 and a second groove 52 that are interconnected. The ends of the first groove 51 and the second groove 52 that are furthest from each other are connected to two adjacent longitudinal grooves 10, respectively. The second groove 52, at least a portion of the longitudinal groove 10 and the first connecting groove 40 are connected in sequence to form a heat dissipation groove. Along the arrangement direction from the second groove 52 to the first connecting groove 40, the width of the heat dissipation groove gradually increases.

[0044] Using the technical solution of this embodiment, the tire tread is provided with a tread pattern structure. Each longitudinal groove 10 of the tread pattern structure extends along the circumference of the tire, and multiple longitudinal grooves 10 are spaced apart along the width direction of the tire to divide the tread into two shoulder tread portions 20 and multiple intermediate tread portions 30 located between the two shoulder tread portions 20. A first connecting groove 40 is provided on the shoulder tread portion 20, and both ends of the first connecting groove 40 are connected to the tire shoulder and the longitudinal grooves 10, respectively. A second connecting groove 50 is provided on the intermediate tread portion 30, and the second connecting groove 50 includes a first groove 51 and a second groove 52 that are interconnected. The ends of the first groove 51 and the second groove 52 that are away from each other are connected to two adjacent longitudinal grooves 10, respectively. The second groove 52, at least a portion of the longitudinal grooves 10, and the first connecting groove 40 are sequentially connected to form a heat dissipation groove. Along the arrangement direction from the second groove 52 to the first connecting groove 40, the width of the heat dissipation groove gradually increases. In this way, when the wide-body mining dump truck travels on roads piled with gravel for extended periods, the multiple longitudinal grooves 10, the first connecting groove 40, and the second connecting groove 50 ensure smooth airflow, guaranteeing the reliability of tire ventilation and heat dissipation. Simultaneously, the second groove 52 is correspondingly positioned to connect with the first connecting groove 40, allowing both to be connected via the longitudinal grooves 10, forming a heat dissipation groove. The gradually increasing width of the heat dissipation groove increases the force and speed of airflow through narrower areas, accelerating the passage of air and heat. This ensures reliable heat dissipation in the central area of ​​the tire tread, which bears the main stress, improving the tire's heat dissipation performance and thus solving the problem of poor heat dissipation performance in existing wide-body mining dump truck tires. Meanwhile, the arrangement of multiple longitudinal grooves 10, the first connecting groove 40 and the second connecting groove 50 can, on the one hand, reduce the rigidity of the tire tread blocks, ensuring the traction and grip between the tire and the road surface, and ensuring the tire's driving stability and handling stability; on the other hand, it can discharge accumulated water and mud between the tire and the road surface, ensuring the tire's self-cleaning performance.

[0045] In this embodiment, four longitudinal grooves 10 are provided. The width of the longitudinal grooves 10 is narrower than that of traditional tire treads, which makes the tire's contact area as high as 86%, thus improving the tire's cut resistance and wear resistance.

[0046] like Figure 1As shown, the first groove 51 includes a first sub-groove 511 and a second sub-groove 512 that are interconnected. The end of the first sub-groove 511 away from the second sub-groove 512 is connected to the longitudinal groove 10, and the end of the second sub-groove 512 away from the first sub-groove 511 is connected to the second groove 52. The first sub-groove 511 and the second sub-groove 512 are set at an angle. The second sub-groove 512 is set at a first angle A1 with the circumferential direction of the tire, where the first angle A1 satisfies: 60°≤A1≤70°. Thus, the first groove 51 is connected to the longitudinal groove 10 through the first sub-groove 511, and to the second groove 52 through the second sub-groove 512. Meanwhile, the first sub-groove 511 and the second sub-groove 512 are set at an angle, making the first groove 51 have a zigzag design. This allows the first groove 51 to disperse the ground stress of the middle tread portion 30 from multiple directions, improving the tire's wear resistance. It also allows the first groove 51 to decompose the shear force generated inside the tread block during deformation from multiple directions, ensuring the rigidity and stability of the middle tread portion 30, reducing local heat generation, and lowering the tire's heat generation level.

[0047] like Figure 1 As shown, the extension direction of one sidewall of the second groove 52 is consistent with the extension direction of the second sub-groove 512, while the extension direction of the other sidewall of the second groove 52 is at an angle to the extension direction of the second sub-groove 512. This arrangement, where one sidewall of the second groove 52 is aligned with the direction of the second sub-groove 512 and the other sidewall is at an angle to the direction of the second sub-groove 512, allows the second groove 52 to form a "Z"-shaped structure with the first sub-groove 511 and the second sub-groove 512. This structure disperses stress in the central tread portion 30 from multiple directions, resulting in more uniform wear of the central tread portion 30, improving tire wear resistance, and extending tire lifespan. Simultaneously, this design creates a groove with varying width in the second groove 52. When the second groove 52 connects with the longitudinal groove 10 and its corresponding first connecting groove 40, the width variation of the heat dissipation groove ensures greater force when airflow passes through the second groove 52, facilitating rapid airflow and heat transfer, accelerating tire heat dissipation, and improving tire cooling performance. Furthermore, the varying width of the second groove 52 makes the transition area between the central tread portion 30 and the shoulder tread portion smoother, preventing the risk of tread blocks tearing or falling off under repeated contact pressure and driving force. This disperses contact pressure, improves the distribution of stress on the contact surface, enhances tire tear resistance, and extends tire lifespan.

[0048] like Figure 1 and Figure 6As shown, the tread pattern also includes a first reinforcing structure 60, which is disposed at the bottom wall of the second sub-groove 512. Both ends of the first reinforcing structure 60 are connected to the two side walls of the second sub-groove 512. The height H1 of the first reinforcing structure 60 and the groove depth D1 of the second sub-groove 512 satisfy the following condition: 0.3D1≤H1≤0.4D1. This arrangement of the first reinforcing structure 60 connects adjacent tread blocks, ensuring both the heat dissipation performance of the second sub-groove 512 and the strength of the tire tread blocks. It also strengthens the connection between tread grooves, suppresses bottom cracking and tearing of tread blocks, improves the tire's wear resistance and tear resistance, and extends the tire's service life.

[0049] like Figure 1 As shown, there are multiple second connecting grooves 50, which are spaced apart along the circumference of the tire. The tread pattern also includes lateral grooves 70, with a lateral groove 70 between adjacent second connecting grooves 50. The lateral groove 70 includes a first lateral groove 71 and a second lateral groove 72 that are interconnected. The end of the first lateral groove 71 away from the second lateral groove 72 is connected to a longitudinal groove 10 located on one side of the intermediate tread portion 30. The end of the second lateral groove 72 away from the first lateral groove 71 is spaced apart from the longitudinal groove 10 located on the other side of the intermediate tread portion 30. The first lateral groove 71 and the second lateral groove 72 are set at an angle. The second lateral groove 72 is set at a second angle A2 with the circumference of the tire, and the second angle A2 satisfies: 60°≤A2≤70°. In this way, the arrangement of the lateral grooves 70 can increase the airflow area in the intermediate tread portion 30 and improve the heat dissipation performance of the intermediate tread portion 30. Meanwhile, the arrangement of the first lateral groove 71 and the second lateral groove 72 makes the lateral groove 70 zigzag-shaped, which can disperse the stress of the middle tread portion 30 from multiple directions, making the wear of the middle tread portion 30 more uniform, improving the wear resistance of the tire, and extending the service life of the tire.

[0050] In this embodiment, the first transverse groove 71 and the first sub-groove 511 are arranged parallel to each other, and the second transverse groove 72 and the second sub-groove 512 are arranged parallel to each other.

[0051] In this embodiment, the extension directions of the first transverse groove 71 and the first sub-groove 511 are parallel to the width direction of the tire. Meanwhile, during the ground contact process, the intermediate tread portion 30 is prone to uneven pressure distribution. Multiple first transverse grooves 71 and multiple first sub-grooves 511 can balance the ground contact stress of the intermediate tread portion 30, improving its wear resistance and thus enhancing the tire's wear resistance.

[0052] In this embodiment, the tire tread pattern has a central rotational symmetry design.

[0053] Specifically, there are two intermediate tread sections 30, and the second connecting grooves 50 and the lateral grooves 70 on the two intermediate tread sections 30 are staggered to ensure that the stress of the tire is dispersed when it touches the ground, thus mitigating wear and improving wear resistance.

[0054] like Figure 1 and Figure 7 As shown, the tread pattern also includes a second reinforcing structure 80, which is disposed at the bottom wall of the first transverse groove 71. The two ends of the second reinforcing structure 80 are connected to the two side walls of the first transverse groove 71, respectively. The height H2 of the second reinforcing structure 80 and the groove depth D2 of the first transverse groove 71 satisfy the following condition: 0.3D2≤H2≤0.4D2. This arrangement of the second reinforcing structure 80 connects two adjacent tread blocks, ensuring both the heat dissipation performance of the second transverse groove 72 and the rigidity of the tire tread blocks. It enhances the rigidity between adjacent tread blocks, suppresses bottom cracking of the tread groove and tearing of the tread blocks, improves the tire's wear resistance and tear resistance, and extends the tire's service life.

[0055] In this embodiment, the second transverse groove 72 includes a first sub-transverse groove and a second sub-transverse groove that are interconnected. The end of the first sub-transverse groove away from the second sub-transverse groove is connected to the first transverse groove 71. The bottom wall of the second sub-transverse groove is set at a third angle A3 with the bottom wall of the first sub-transverse groove, where the third angle A3 satisfies: 140°≤A3≤145°. This arrangement ensures that the bottom wall of the second transverse groove 72 is sloped at the end away from the first transverse groove 71. This not only achieves the heat dissipation function of the second transverse groove 72 but also prevents stones from getting stuck in the second transverse groove 72, thus avoiding cracks at the bottom of the groove. This ensures the wear resistance and anti-cracking performance of the middle tread portion 30, extending the tire's service life. Simultaneously, the slope provides a platform with a certain inclination angle, making it less likely for stones to get stuck, and also making it easier for stones to be thrown out during tire movement, effectively suppressing tread cracks and extending the tire's service life.

[0056] like Figure 1 As shown, there are multiple first connecting grooves 40, which are spaced apart along the circumference of the tire. The tread structure also includes heat dissipation recesses 90, which are disposed between two adjacent first connecting grooves 40. One end of the heat dissipation recess 90 is spaced apart from the longitudinal grooves 10, and the other end is spaced apart from the tire shoulder. This arrangement of the heat dissipation recesses 90 increases the contact area between the tire shoulder tread section 20 and the airflow, ensuring the reliability of heat dissipation in the tire shoulder tread section 20 and improving the tire's heat dissipation performance.

[0057] like Figure 1As shown, the contact portion of the tire with the driving surface has a width T, and the intermediate tread portion 30 has a width W11; wherein, the projected width W21 of the first connecting groove 40 in the width direction of the tire satisfies the following condition with respect to width T: 0.38T≤W21≤0.42T; and / or, the projected width W22 of the first sub-groove 511 in the width direction of the tire satisfies the following condition with respect to width T: 0.15T≤W22≤0.19T; and / or, the projected width W23 of the first lateral groove 71 in the width direction of the tire satisfies the following condition with respect to width T: 0.15T≤W23≤ 0.19T; and / or, the projected width W24 of the second sub-groove 512 in the width direction of the tire satisfies the following condition: 0.58W11≤W24≤0.62W11; and / or, the projected width W25 of the second lateral groove 72 in the width direction of the tire satisfies the following condition: 0.58W11≤W25≤0.62W11; and / or, the groove width W31 of the second sub-groove 512 satisfies the following condition: 5mm≤W31≤8mm; and / or, the groove width W32 of the second lateral groove 72 satisfies the following condition: 5mm≤W32≤8mm. In this way, the above settings ensure tire heat dissipation while providing excellent traction and tremendous grip, effectively suppressing lateral tire slippage, improving tread stability, and enhancing tire driving stability and safety.

[0058] Example 2

[0059] The only difference between this embodiment and Embodiment 1 is that the middle tread portion 30 is provided with a heat dissipation longitudinal groove 100 to further improve the heat dissipation performance of the middle tread portion 30, thereby improving the heat dissipation performance of the tire.

[0060] like Figure 2 As shown, the tread structure also includes heat dissipation longitudinal grooves 100, which are disposed on the central tread portion 30 and extend along the circumference of the tire. The heat dissipation longitudinal grooves 100 are connected to the second sub-grooves 512 and the second lateral grooves 72. This connection between the heat dissipation longitudinal grooves 100 and the second sub-grooves 512 and the second lateral grooves 72 further increases the airflow area between the central tread portion 30 and the external airflow, improving the heat dissipation performance of the central tread portion 30 and thus further enhancing the tire's heat dissipation performance.

[0061] Alternatively, in other embodiments, the width of the first connecting groove 40 can be increased by 40 percent to improve the heat dissipation performance of the tire.

[0062] As can be seen from the above description, the embodiments of this utility model achieve the following technical effects:

[0063] The tire tread features a tread pattern with longitudinal grooves extending circumferentially. Multiple longitudinal grooves are spaced apart along the tire's width, dividing the tread into two shoulder tread sections and multiple intermediate tread sections between them. A first connecting groove is located on the shoulder tread section, with its two ends connecting to the tire shoulder and the longitudinal grooves, respectively. A second connecting groove is located on the intermediate tread sections, comprising a first groove and a second groove that are interconnected. The ends of the first and second grooves, furthest from each other, connect to two adjacent longitudinal grooves. The second groove, at least some of the longitudinal grooves, and the first connecting groove are sequentially connected to form heat dissipation grooves. The width of the heat dissipation grooves gradually increases along the arrangement direction from the second groove to the first connecting groove. Thus, when the mining wide-body dump truck travels for extended periods on roads with accumulated gravel, the multiple longitudinal grooves, the first connecting groove, and the second connecting groove ensure smooth airflow, guaranteeing the tire's ventilation and heat dissipation reliability. Meanwhile, the second groove is correspondingly arranged to the first connecting groove, so that the second groove and the first connecting groove are connected by longitudinal grooves and form a heat dissipation groove. The gradually increasing width of the heat dissipation groove increases the force and speed of airflow through the narrower parts, allowing airflow and heat to pass through more quickly. This ensures the reliability of heat dissipation in the central area of ​​the tire tread where the main force is applied, improves the tire's heat dissipation performance, and thus solves the problem of poor heat dissipation performance in existing mining wide-body dump truck tires. At the same time, the arrangement of multiple longitudinal grooves, the first connecting groove, and the second connecting groove can, on the one hand, reduce the rigidity of the tire tread blocks, ensuring traction and grip between the tire and the road surface, and ensuring the tire's driving stability and handling stability; on the other hand, it can expel water and mud accumulated between the tire and the road surface, ensuring the tire's self-cleaning performance.

[0064] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0065] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application 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 where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0066] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A tire, characterized in that, The tire tread has a tread pattern, the tread pattern including: Multiple longitudinal grooves (10), each of the longitudinal grooves (10) extends along the circumference of the tire, and the multiple longitudinal grooves (10) are spaced apart along the width direction of the tire to divide the tread into two shoulder tread portions (20) and multiple intermediate tread portions (30) located between the two shoulder tread portions (20). A first connecting groove (40) is provided on the tire shoulder tread portion (20), and the two ends of the first connecting groove (40) are respectively connected to the tire shoulder and the longitudinal groove (10); The second connecting groove (50) is provided on the middle patterned part (30). The second connecting groove (50) includes a first groove (51) and a second groove (52) that are connected to each other. The ends of the first groove (51) and the second groove (52) that are away from each other are respectively connected to the two adjacent longitudinal grooves (10). The second groove (52), at least part of the longitudinal groove (10) and the first connecting groove (40) are connected in sequence to form a heat dissipation groove, and the width of the heat dissipation groove gradually increases along the arrangement direction from the second groove (52) to the first connecting groove (40).

2. The tire according to claim 1, characterized in that, The first trench (51) includes a first sub-trench (511) and a second sub-trench (512) that are interconnected. The end of the first sub-trench (511) away from the second sub-trench (512) is connected to the longitudinal trench (10), and the end of the second sub-trench (512) away from the first sub-trench (511) is connected to the second trench (52). The first sub-trench (511) and the second sub-trench (512) are arranged at an angle. The second sub-groove (512) is set at a first angle A1 with respect to the circumferential direction of the tire, and the first angle A1 satisfies: 60°≤A1≤70°.

3. The tire according to claim 2, characterized in that, The extension direction of one sidewall of the second groove (52) is consistent with the extension direction of the second sub-groove (512), and the extension direction of the other sidewall of the second groove (52) is set at an angle to the extension direction of the second sub-groove (512).

4. The tire according to claim 2, characterized in that, The pattern structure also includes: A first reinforcing structure (60) is disposed at the bottom wall of the second sub-groove (512), and the two ends of the first reinforcing structure (60) are connected to the two side walls of the second sub-groove (512). The height H1 of the first reinforcing structure (60) and the groove depth D1 of the second sub-groove (512) satisfy the following condition: 0.3D1≤H1≤0.4D1.

5. The tire according to claim 2, characterized in that, There are multiple second connecting grooves (50), and the multiple second connecting grooves (50) are spaced apart along the circumference of the tire. The tread structure also includes: A transverse groove (70) is provided between two adjacent second connecting grooves (50). The transverse groove (70) includes a first transverse groove (71) and a second transverse groove (72) that are interconnected. The end of the first transverse groove (71) away from the second transverse groove (72) is connected to the longitudinal groove (10) located on one side of the middle patterned part (30). The end of the second transverse groove (72) away from the first transverse groove (71) is spaced apart from the longitudinal groove (10) located on the other side of the middle patterned part (30). The first transverse groove (71) and the second transverse groove (72) are arranged at an angle. The second transverse groove (72) is set at a second included angle A2 with the circumferential direction of the tire, and the second included angle A2 satisfies: 60°≤A2≤70°.

6. The tire according to claim 5, characterized in that, The pattern structure also includes: The second reinforcing structure (80) is disposed at the bottom wall of the first transverse groove (71), and the two ends of the second reinforcing structure (80) are respectively connected to the two side walls of the first transverse groove (71); The height H2 of the second reinforcing structure (80) and the groove depth D2 of the first transverse groove (71) satisfy the following condition: 0.3D2≤H2≤0.4D2.

7. The tire according to claim 5, characterized in that, The second transverse groove (72) includes a first sub-transverse groove and a second sub-transverse groove that are interconnected, and the end of the first sub-transverse groove away from the second sub-transverse groove is connected to the first transverse groove (71); The bottom wall of the second sub-channel is set at a third included angle A3 with the bottom wall of the first sub-channel, and the third included angle A3 satisfies: 140°≤A3≤145°.

8. The tire according to claim 1, characterized in that, The first connecting groove (40) is multiple, and the multiple first connecting grooves (40) are spaced apart along the circumference of the tire. The tread structure further includes: A heat dissipation recess (90) is disposed between two adjacent first connecting grooves (40). One end of the heat dissipation recess (90) is spaced apart from the longitudinal groove (10), and the other end of the heat dissipation recess (90) is spaced apart from the tire shoulder.

9. The tire according to claim 5, characterized in that, The pattern structure also includes: A heat dissipation groove (100) is provided on the intermediate tread portion (30) and extends along the circumference of the tire; The heat dissipation longitudinal trench (100) is connected to the second sub-trench (512) and the second transverse trench (72).

10. The tire according to claim 5, characterized in that, The contact portion of the tire with the driving surface has a width T, and the intermediate tread portion (30) has a width W11; Wherein, the projected width W21 of the first connecting groove (40) in the width direction of the tire satisfies the following condition: 0.38T≤W21≤0.42T; and / or, The first sub-groove (511) has a projected width W22 in the width direction of the tire that satisfies the following condition: 0.15T ≤ W22 ≤ 0.19T; and / or, The first transverse groove (71) has a projected width W23 in the width direction of the tire that satisfies the following condition: 0.15T ≤ W23 ≤ 0.19T; and / or, The second sub-groove (512) satisfies the following condition in the width direction of the tire: its projected width W24 is equal to or equal to its width W11: 0.58W11 ≤ W24 ≤ 0.62W11; and / or, The projection width W25 of the second transverse groove (72) in the width direction of the tire satisfies the following condition between the width W11 and the projection width W25: 0.58W11≤W25≤0.62W11; and / or, The groove width W31 of the second sub-groove (512) satisfies: 5mm ≤ W31 ≤ 8mm; and / or, The groove width W32 of the second transverse groove (72) satisfies: 5mm≤W32≤8mm.

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