Off-the-road tire tread with three-dimensional sipe pattern structure

Abstract

The utility model discloses an off-the-road tire tread with a three-dimensional sipe pattern structure, which comprises a central pattern block I and a central pattern block II which are alternately arranged in the circumferential direction, and shoulder pattern blocks are respectively arranged on two sides of the central pattern block I and the central pattern block II; the first central pattern block is separated from the two adjacent second central pattern blocks through a first transverse three-dimensional sipe groove and a second transverse three-dimensional sipe groove respectively, the first central pattern block and the second central pattern block are separated from the shoulder pattern blocks through longitudinal sipe grooves, and the adjacent shoulder pattern blocks are separated through main pattern grooves. The transverse three-dimensional sipe pattern grooves I, the transverse three-dimensional sipe pattern grooves II, the longitudinal sipe pattern grooves and the main pattern grooves are communicated with one another; and the groove walls of the transverse three-dimensional sipe grooves I and the transverse three-dimensional sipe grooves II are zigzag. The overall saturation degree of the tread patterns is 75-85%, the tread rigidity is high, and the tire has good puncture resistance and abrasion volume and is suitable for scenes with severe working conditions.

Description

Technical Field

[0001] The utility model relates to the technical field of tires, in particular to an engineering machinery tire tread with a three-dimensional sipe pattern structure. Background Art

[0002] As an essential component in mining operations, mining dump truck tires are crucial for transporting ore and other materials. They face far greater challenges than standard tires, not only bearing enormous loads but also adapting to complex, ever-changing, and extremely harsh road conditions. In the specific working conditions of metal mines, tire durability and reliability are key performance indicators.

[0003] Metal mining operations often feature rugged roads littered with large, hard, and sharp-edged rocks, which can be extremely damaging to tires. When fully loaded, mining dump trucks bear immense pressure on their tires, significantly increasing the risk of punctures and cuts. Furthermore, such harsh conditions significantly accelerate tire wear, reducing tire lifespan and increasing maintenance costs. In severe cases, this can even impact mine production efficiency and operational safety.

[0004] To address this series of problems, it is urgent to design a new tread pattern that can enhance the overall stiffness of the tread while maintaining good grip, so that the tire has good puncture resistance and higher wear volume, and can adapt to use in scenarios with harsh working conditions. Utility Model Content

[0005] The technical problem to be solved by the utility model is: to overcome the shortcomings of the existing technology and provide an engineering machinery tire tread with a three-dimensional sipe pattern structure, the overall saturation of the tread pattern is 75-85%, the tread stiffness is significantly higher than that of conventional products, it has good puncture resistance and higher wear volume, and can adapt to use in scenes with harsh working conditions.

[0006] The technical solution of the utility model is:

[0007] The tread of an engineering machinery tire with a three-dimensional sipe pattern structure includes a central pattern block 1 and a central pattern block 2 alternately arranged in the circumferential direction, and shoulder pattern blocks are respectively arranged on both sides of the central pattern block 1 and the central pattern block 2; the central pattern block 1 is separated from two adjacent central pattern blocks 2 by a transverse three-dimensional sipe pattern groove 1 and a transverse three-dimensional sipe pattern groove 2, respectively; the central pattern block 1 and the central pattern block 2 are separated from the shoulder pattern blocks by a longitudinal sipe groove; the adjacent shoulder pattern blocks are separated by a main pattern groove, and the transverse three-dimensional sipe pattern groove 1, the transverse three-dimensional sipe groove 2, the longitudinal sipe groove and the main pattern groove are connected; the groove walls of the transverse three-dimensional sipe groove 1 and the transverse three-dimensional sipe groove 2 are serrated.

[0008] Preferably, the depth of the first transverse three-dimensional sipe groove is less than the depth of the second transverse three-dimensional sipe groove.

[0009] Preferably, the depth of the first transverse three-dimensional sipe groove and the second transverse three-dimensional sipe groove is 30-70% of the depth of the main groove.

[0010] Preferably, the first transverse three-dimensional sipe groove and the second transverse three-dimensional sipe groove are at an angle of 10-45° to the central centerline of the tread.

[0011] Preferably, the width of the first transverse three-dimensional sipe groove and the second transverse three-dimensional sipe groove is 3-5 mm.

[0012] Preferably, the longitudinal sipe groove is at an angle of 10-20° to the central centerline of the tread.

[0013] Preferably, the depth of the longitudinal sipe groove is 30-70% of the depth of the main groove.

[0014] Preferably, the length of the main groove accounts for 20-40% of the width of the running surface, and the groove wall angle is 28-40°.

[0015] Preferably, the first transverse three-dimensional sipe groove and the second transverse three-dimensional sipe groove are S-shaped and the first transverse three-dimensional sipe groove and the second transverse three-dimensional sipe groove are arranged in parallel.

[0016] Preferably, the longitudinal sipe groove is in a broken line shape.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The design of the first and second transverse three-dimensional sipes of this utility model optimizes the ground contact pressure distribution of the first and second central tread blocks, improving tire traction and reducing crown heat generation. Furthermore, during operation, the zigzag-shaped groove walls close when the tire touches the ground, interlocking through the three-dimensional structure to ensure the overall rigidity of the tire tread blocks. The overall tread saturation of this utility model is 75-85%, resulting in significantly higher tread stiffness than conventional products, excellent puncture resistance, and higher wear volume, making it suitable for use in harsh working conditions.

[0019] 2. The longitudinal sipes of this utility model optimize force distribution across the first and second central blocks and the shoulder blocks, providing lateral grip, reducing crown heat generation, and improving heat dissipation efficiency through air circulation. Furthermore, the main groove length and groove wall angle significantly influence the block area, traction, and performance. This embodiment selects the optimal main groove length and groove wall angle to ensure overall tread stiffness while providing effective traction and preventing stone entrainment, ultimately optimizing the tire's overall performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The utility model is a structural schematic diagram of an engineering machinery tire tread with a three-dimensional sipe pattern structure.

[0021] Figure 2 It is a side view of a transverse three-dimensional sipe groove 1 of the present invention.

[0022] Figure 3 It is a side view of the main groove of the present invention.

[0023] In the figure, 1, central pattern block one; 2, central pattern block two; 3, shoulder pattern block; 4, horizontal three-dimensional sipe pattern groove one; 5, horizontal three-dimensional sipe pattern groove two; 6, longitudinal sipe pattern groove; 7, main pattern groove. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the technical solution of the present invention, the technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention.

[0025] Example 1

[0026] like Figure 1As shown, this embodiment provides an engineering machinery tire tread with a three-dimensional sipe structure, including a central pattern block 1 and a central pattern block 2 alternately arranged in the circumferential direction, and block-shaped shoulder pattern blocks 3 are respectively arranged on both sides of the central pattern block 1 and the central pattern block 2; the central pattern block 1 and the two adjacent central pattern blocks 2 are separated by a transverse three-dimensional sipe groove 1 4 and a transverse three-dimensional sipe groove 2 5, respectively, wherein the transverse three-dimensional sipe groove 1 4 and the transverse three-dimensional sipe groove 2 5 are both S-shaped and arranged in parallel, so that the central pattern block 1 and the central pattern block 2 2 are in the shape of oblique long strips, which can evenly distribute the pattern block pressure and provide additional longitudinal and lateral traction capabilities.

[0027] The central pattern block 1 and the central pattern block 2 are separated from the shoulder pattern block 3 by a broken line longitudinal sipe groove 6, and the adjacent shoulder pattern blocks 3 are separated by a main groove 7, and the transverse three-dimensional sipe groove 1 4, the transverse three-dimensional sipe groove 2 5, the longitudinal sipe groove 6 and the main groove 7 are connected. Figure 1 、 3As shown, the length of the main groove 7 accounts for 20-40% of the running surface width. The groove bottom adopts a fully circular arc design, and the groove wall angle α is 28-40°. Selecting the appropriate main groove 7 length ensures overall tread block rigidity, improves puncture and wear resistance, and provides necessary traction performance. Reasonable groove wall angle and groove bottom design help ensure groove self-cleaning performance and prevent stone entrainment. The depth of the transverse three-dimensional sipe groove 1 4, transverse three-dimensional sipe groove 2 5, and longitudinal sipe groove 6 is 30-70% of the depth of the main groove 7. The depth of different sipes is determined by the functional design at different stages of the tire's life cycle: in the early stage of use, they can provide certain traction and heat dissipation functions. As the pattern wears, the need for heat dissipation decreases in the middle and later stages of use, while the need for puncture resistance increases. The depths of transverse 3D sipe groove 1 4, transverse 3D sipe groove 2 5, and longitudinal sipe groove 6 can be designed in different combinations based on the functional requirements of different actual usage scenarios to achieve different functional design objectives. Furthermore, the zigzag groove wall dimensions (including width and length) of transverse 3D sipe groove 1 4 and transverse 3D sipe groove 2 5 can be designed to different values based on different tread depths. The width of the transverse three-dimensional sipe groove 1 4 and the transverse three-dimensional sipe groove 2 5 is 3-5mm, and the transverse three-dimensional sipe groove 1 4 and the transverse three-dimensional sipe groove 2 5 are 10-45 degrees to the central centerline of the tread, and the longitudinal sipe groove 6 is 10-20 degrees to the central centerline of the tread, which can make the pressure distribution of the pattern blocks uniform and provide additional longitudinal and transverse traction capabilities; the appropriate sipe groove width design can prevent the entrainment of large stones and the resulting reduction in tread life; the sipe groove can reach a closed state when it touches the ground, and at the same time, combined with the special structure of the three-dimensional sipe, the bite characteristics between the pattern blocks can greatly improve the overall stiffness of the pattern blocks and improve the puncture resistance and wear resistance of the tread.

[0028] The longitudinal sipe grooves 6 of this embodiment optimize the force distribution across central block 1, central block 2, and shoulder blocks 3, providing lateral grip, reducing crown heat generation, and improving heat dissipation efficiency through air circulation. Furthermore, the length and wall angle of the main grooves 7 significantly influence the block area, traction, and performance. The optimized main groove 7 length and wall angle of this embodiment ensures overall tread stiffness while providing effective traction and preventing stone entrainment, ultimately optimizing the tire's overall performance.

[0029] In addition, if Figure 2As shown, in this embodiment, the groove walls of transverse three-dimensional sipe groove 1 4 and transverse three-dimensional sipe groove 2 5 are zigzag-shaped. The design of transverse three-dimensional sipe groove 1 4 and transverse three-dimensional sipe groove 2 5 in this embodiment optimizes the ground contact pressure distribution of central block 1 and central block 2 2, improves tire traction, and reduces crown heat generation. Furthermore, during tire operation, the zigzag-shaped groove walls allow for closure when the tire touches the ground, interlocking through the three-dimensional structure to ensure overall tire tread block rigidity.

[0030] The overall saturation of the tread pattern of this embodiment is 75-85%, and its tread stiffness is significantly higher than that of conventional products. It has good puncture resistance and higher wear volume, and can adapt to use in scenes with harsh working conditions.

Claims

1. An engineering machinery tire tread having a three-dimensional sipe structure, characterized in that: The invention comprises a central pattern block 1 (1) and a central pattern block 2 (2) which are arranged alternately in the circumferential direction, and shoulder pattern blocks (3) are respectively arranged on both sides of the central pattern block 1 (1) and the central pattern block 2 (2); the central pattern block 1 (1) and the two adjacent central pattern blocks 2 (2) are separated by a transverse three-dimensional knife groove pattern groove 1 (4) and a transverse three-dimensional knife groove pattern groove 2 (5), respectively; the central pattern block 1 (1) and the central pattern block 2 (2) are separated from the shoulder pattern block (3) by a longitudinal knife groove pattern groove (6), and the adjacent shoulder pattern blocks (3) are separated by a main pattern groove (7), and the transverse three-dimensional knife groove pattern groove 1 (4), the transverse three-dimensional knife groove pattern groove 2 (5), the longitudinal knife groove pattern groove (6) and the main pattern groove (7) are connected; the groove walls of the transverse three-dimensional knife groove pattern groove 1 (4) and the transverse three-dimensional knife groove pattern groove 2 (5) are sawtooth-shaped.

2. The engineering machinery tire tread with a three-dimensional sipe structure according to claim 1, characterized in that: The depth of the transverse three-dimensional sipe groove 1 (4) is less than the depth of the transverse three-dimensional sipe groove 2 (5).

3. The engineering machinery tire tread with a three-dimensional sipe structure according to claim 1, wherein: The depth of the transverse three-dimensional sipe groove 1 (4) and the transverse three-dimensional sipe groove 2 (5) is 30-70% of the depth of the main tread groove (7).

4. The engineering machinery tire tread with a three-dimensional sipe structure according to claim 1, wherein: The transverse three-dimensional sipe groove 1 (4) and the transverse three-dimensional sipe groove 2 (5) are 10-45 degrees to the central center line of the tread.

5. The engineering machinery tire tread with a three-dimensional sipe structure according to claim 1, wherein: The width of the transverse three-dimensional sipe groove 1 (4) and the transverse three-dimensional sipe groove 2 (5) is 3-5 mm.

6. The engineering machinery tire tread with a three-dimensional sipe structure according to claim 1, wherein: The longitudinal sipe groove (6) is 10-20 degrees away from the central centerline of the tread.

7. The engineering machinery tire tread with a three-dimensional sipe structure according to claim 1, wherein: The depth of the longitudinal sipe groove (6) is 30-70% of the depth of the main groove (7).

8. The engineering machinery tire tread with a three-dimensional sipe structure according to claim 1, wherein: The length of the main groove (7) accounts for 20-40% of the width of the running surface, and the groove wall angle is 28-40 degrees.

9. The engineering machinery tire tread with a three-dimensional sipe structure according to claim 1, wherein: The transverse three-dimensional sipe groove 1 (4) and the transverse three-dimensional sipe groove 2 (5) are S-shaped and the transverse three-dimensional sipe groove 1 (4) and the transverse three-dimensional sipe groove 2 (5) are arranged in parallel.

10. The engineering machinery tire tread with a three-dimensional sipe structure according to claim 1, wherein: The longitudinal sipe groove (6) is in a broken line shape.

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