Rain and snow off-road tire with excellent mud discharge performance

Abstract

The invention relates to the technical field of off-road tires, and discloses a rain and snow off-road tire with excellent mud discharge performance, which comprises a first middle pattern block, a second middle pattern block, a third middle pattern block, a first shoulder pattern block, a second shoulder pattern block, a first sidewall decoration and a second sidewall decoration, a first pattern groove, a second pattern groove, a third pattern groove, a fourth pattern groove, a fifth pattern groove and a sixth pattern groove are respectively formed among the first middle pattern block, the second middle pattern block, the third middle pattern block, the first shoulder pattern block and the second shoulder pattern block. Through collaborative optimization of multiple structures, efficient mud and water discharge, stable ground gripping and sidewall protection are realized, and the problems of mud accumulation, insufficient ground gripping force and vulnerability of sidewalls in rain and snow off-road are solved.

Description

Technical Field

[0001] This invention relates to the field of off-road tire technology, specifically to a rain and snow off-road tire with superior mud-shedding performance. Background Technology

[0002] Rain and snow off-road tires are key vehicle components adapted to complex off-road conditions such as mud and snow. Their core requirements revolve around mud and water drainage efficiency, grip stability, structural durability, and sidewall protection, which directly affect vehicle passability and driving safety. They are widely used in off-road passenger vehicles, special operation vehicles, and other scenarios.

[0003] Existing off-road tires typically employ a basic combination of tread blocks and grooves to cope with complex road conditions. However, the lack of coordinated optimization among these structures leads to the accumulation of mud and sand in the grooves, hindering rapid drainage and mud removal during driving. While some products incorporate simple connecting structures to reinforce the tread blocks, uneven stress and easy deformation still exist, reducing grip reliability. Furthermore, sidewall decorations are often designed primarily for aesthetic purposes, and their structural forms are insufficient to withstand scratches and impacts in off-road scenarios, making them prone to damage. These shortcomings collectively limit the tire's performance and lifespan in rainy and snowy off-road environments. Therefore, a rainy and snowy off-road tire with superior mud removal performance is proposed. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a rain and snow off-road tire with superior mud-shedding performance, thereby solving the problems mentioned in the background section.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a rain and snow off-road tire with excellent mud-removal performance, comprising:

[0006] The tire has a first central tread block, a second central tread block, a third central tread block, a first shoulder tread block, a second shoulder tread block, a first sidewall trim, and a second sidewall trim. A first tread groove, a second tread groove, a third tread groove, a fourth tread groove, a fifth tread groove, and a sixth tread groove are respectively provided between the first central tread block, the second central tread block, the third central tread block, the first shoulder tread block, and the second shoulder tread block.

[0007] The bottoms of the first, second, third, fourth, fifth, and sixth patterned grooves are respectively provided with a first groove bottom self-cleaning device, a second groove bottom self-cleaning device, a third groove bottom self-cleaning device, a fourth groove bottom self-cleaning device, a fifth groove bottom self-cleaning device, a sixth groove bottom self-cleaning device, and a seventh groove bottom self-cleaning device.

[0008] A first patterned rib, a second patterned rib, and a third patterned rib are connected between the first central patterned block and the second central patterned block. A first steel sheet, a second steel sheet, a third steel sheet, a fourth steel sheet, a fifth steel sheet, a sixth steel sheet, and a seventh steel sheet are respectively provided on the first central patterned block, the second central patterned block, the third central patterned block, the first shoulder patterned block, and the second shoulder patterned block.

[0009] The first central tread block, the second central tread block, the third central tread block, and each tread groove are arranged alternately in the circumferential direction of the tire. The first shoulder tread block and the second shoulder tread block are two different styles and are arranged alternately along the circumferential direction of the tire. The first sidewall decoration and the second sidewall decoration are arranged alternately along the circumferential direction of the tire to form a three-dimensional sidewall decoration. There are also longitudinal zigzag grooves between the first shoulder tread block, the second shoulder tread block, the first central tread block, and the second central tread block.

[0010] The tire can quickly wick away rain, snow, and mud through the alternating layout of tread blocks and grooves. The self-cleaning device at the bottom of the grooves can prevent mud from accumulating and clogging the grooves. The tread ribs enhance the stability of the tread block connection, the steel plates increase the tread support strength, the longitudinal zigzag grooves further optimize the mud and water drainage effect, and the three-dimensional sidewall decoration strengthens the sidewall protection. The synergistic effect of these structures significantly improves the tire's mud wicking performance, grip stability, and structural durability in rain and snow off-road scenarios, effectively solving the problems of traditional off-road tires such as easy mud accumulation, insufficient grip, and short service life.

[0011] Preferably, the first, second, and third tread ribs are evenly distributed along the transverse direction of the tire, and one end of each rib is fixedly connected to the sidewall of the first central tread block. Additionally, one end of each rib is fixedly connected to the sidewall of the second central tread block. The depth 'a' of each rib is between 0.5 and 3.5 mm, and the width 'b' of each rib is between 1 and 5 mm. All three ribs have a rectangular cross-section.

[0012] Preferably, the first, second, third, fourth, fifth, sixth, and seventh self-cleaning devices are all integrally formed with the bottom of the corresponding patterned groove. The depth c of each self-cleaning device is between 0.5 and 3.5 mm, the width d of each self-cleaning device is between 1 and 5 mm, and the distance between two adjacent self-cleaning devices is 8 to 12 mm.

[0013] Preferably, the first shoulder tread block has a trapezoidal structure, and the second shoulder tread block has a triangular structure. The outlines of both are adapted and optimized according to the edge shapes of the first and second central tread blocks. The heights of the first and second shoulder tread blocks are consistent with the height of the first central tread block, and the surface roughness of both is 1.6 to 3.2 μm, so as to improve the rigidity of the tread in all directions and make the stress more uniform.

[0014] Preferably, the bending angle of the longitudinal tortuous groove is 120-150°, the width of the longitudinal tortuous groove is 5-35mm, the depth is 6-18mm, and the inner wall of the longitudinal tortuous groove is provided with anti-slip protrusions, which are evenly distributed along the length of the longitudinal tortuous groove and have a protrusion height of 1-2mm.

[0015] Preferably, the first, second, third, fourth, fifth, sixth, and seventh steel sheets are all arc-shaped structures, and the thickness of each steel sheet is 0.8 to 1.2 mm. The first and second steel sheets are symmetrically arranged on the upper surface of the first central patterned block, the third and fourth steel sheets are symmetrically arranged on the upper surface of the second central patterned block, and the remaining steel sheets are correspondingly distributed on the third central patterned block and the shoulder patterned block.

[0016] Preferably, both the first and second sidewall trims are elongated protruding structures, each with a length of 50-80 mm, a width of 10-15 mm, and a height of 1-3 mm. The cross-section of the first sidewall trim is semi-circular, and the cross-section of the second sidewall trim is trapezoidal. When the two are arranged alternately, the gap between adjacent trims is 5-8 mm.

[0017] Preferably, the first, third, and fifth patterned grooves are transverse auxiliary patterned grooves, and the second, fourth, and sixth patterned grooves are longitudinal main patterned grooves. The transverse auxiliary patterned grooves and the longitudinal main patterned grooves are interconnected to form a crisscrossing groove network. The width of the transverse auxiliary patterned grooves is 3-8 mm and the depth is 6-15 mm.

[0018] Preferably, the surfaces of the first, second, and third central patterned blocks are all provided with anti-slip textures. The anti-slip textures are cross-shaped mesh structures with a texture depth of 0.3–1.5 mm. The length of each central patterned block is 80–120 mm, and the width is 40–60 mm. The spacing between adjacent central patterned blocks is consistent with the width of the transverse auxiliary pattern groove.

[0019] Preferably, the first, second, third, fourth, fifth, sixth, and seventh self-cleaning devices at the bottom of the groove are all serrated, with a tooth height of 0.5 to 1 mm and a tooth pitch of 3 to 5 mm. The length of each self-cleaning device is adapted to the length of the corresponding patterned groove, and the connection surface with the bottom of the patterned groove is an arc-shaped transition structure.

[0020] Compared with the prior art, the present invention provides a rain and snow off-road tire with superior mud removal performance, and has the following beneficial effects:

[0021] This invention achieves synergistic optimization of the tread structure through the alternating arrangement of various tread blocks and grooves, the setting of a self-cleaning device at the bottom of the grooves, the connection of tread ribs and the distribution of steel sheets, combined with three-dimensional sidewall decoration and longitudinal zigzag grooves. It has the advantages of efficient mud and water drainage, stable grip, robust structure and good sidewall protection. It solves the problems of easy mud accumulation, insufficient grip, easy deformation of tread blocks and easy damage to the sidewall of tires under rainy and snowy off-road conditions. The various structures work together to form a comprehensive functional system, improving the tire's off-road adaptability and service life. Attached Figure Description

[0022] Figure 1 This is a diagram of the tire tread structure and grooves of the present invention;

[0023] Figure 2 This is a diagram of the tire tread groove structure of the present invention;

[0024] Figure 3 This is a diagram of the self-cleaning device of the present invention.

[0025] In the diagram: 1. First central tread block; 2. Second central tread block; 3. Third central tread block; 4. First shoulder tread block; 5. Second shoulder tread block; 6. First tread groove; 7. First sidewall trim; 8. Second sidewall trim; 9. Second tread groove; 10. Third tread groove; 11. Fourth tread groove; 12. Fifth tread groove; 13. Sixth tread groove; 14. Seventh groove bottom self-cleaning device; 15. First groove bottom self-cleaning device ; 16. Second trench bottom self-cleaning device; 17. Third trench bottom self-cleaning device; 18. First patterned rib; 19. Second patterned rib; 20. Third patterned rib; 21. Fourth trench bottom self-cleaning device; 22. Fifth trench bottom self-cleaning device; 23. Sixth trench bottom self-cleaning device; 24. First steel sheet; 25. Second steel sheet; 26. Third steel sheet; 27. Fourth steel sheet; 28. Fifth steel sheet; 29. ​​Sixth steel sheet; 30. Seventh steel sheet. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] This invention provides a technical solution: a rain and snow off-road tire with excellent mud-shedding performance. Please refer to [link / reference]. Figure 1 , Figure 2 and Figure 3 ,include:

[0028] The first central tread block 1, the second central tread block 2, the third central tread block 3, the first shoulder tread block 4, the second shoulder tread block 5, the first sidewall decoration 7, and the second sidewall decoration 8 are respectively provided with a first tread groove 6, a second tread groove 9, a third tread groove 10, a fourth tread groove 11, a fifth tread groove 12, and a sixth tread groove 13 between the first central tread block 1, the second central tread block 2, the third central tread block 3, the first shoulder tread block 4, and the second shoulder tread block 5;

[0029] The bottoms of the first groove 6, the second groove 9, the third groove 10, the fourth groove 11, the fifth groove 12, and the sixth groove 13 are respectively provided with a first groove bottom self-cleaning device 15, a second groove bottom self-cleaning device 16, a third groove bottom self-cleaning device 17, a fourth groove bottom self-cleaning device 21, a fifth groove bottom self-cleaning device 22, a sixth groove bottom self-cleaning device 23, and a seventh groove bottom self-cleaning device 14;

[0030] The first central patterned block 1 and the second central patterned block 2 are connected by a first patterned rib 18, a second patterned rib 19 and a third patterned rib 20. The first central patterned block 1, the second central patterned block 2, the third central patterned block 3, the first shoulder patterned block 4 and the second shoulder patterned block 5 are respectively provided with a first steel plate 24, a second steel plate 25, a third steel plate 26, a fourth steel plate 27, a fifth steel plate 28, a sixth steel plate 29 and a seventh steel plate 30.

[0031] The first central tread block 1, the second central tread block 2, and the third central tread block 3 are arranged alternately with the tread grooves in the tire circumferential direction. The first shoulder tread block 4 and the second shoulder tread block 5 are two different styles and are arranged alternately along the tire circumferential direction. The first sidewall decoration 7 and the second sidewall decoration 8 are arranged alternately along the tire circumference to form a three-dimensional sidewall decoration. There are also longitudinal zigzag grooves between the first shoulder tread block 4, the second shoulder tread block 5, the first central tread block 1, and the second central tread block 2. Through the alternating arrangement of 5 types of tread blocks such as the first central tread block 1 and 6 types of tread grooves such as the first tread groove 6, combined with 7 types of devices such as the first groove bottom self-cleaning device 15, 3 types of tread ribs such as the first tread rib 18, and arc-shaped steel sheet groups, combined with the three-dimensional sidewall decoration and longitudinal zigzag grooves, a comprehensive functional system is formed. It not only constructs a network of longitudinal and transverse grooves to ensure mud and water drainage, but also improves grip and rigidity through a multi-dimensional structure, taking into account both practicality and aesthetics.

[0032] The first tread rib 18, the second tread rib 19, and the third tread rib 20 are evenly distributed laterally along the tire, and one end of each rib is fixedly connected to the sidewall of the first central tread block 1. Additionally, one end of each rib is fixedly connected to the sidewall of the second central tread block 2. The depth 'a' of each rib is between 0.5 and 3.5 mm. The width b of the second tread rib 19 and the third tread rib 20 are both between 1 and 5 mm, and the cross-section of all three is rectangular. The first tread rib 18, the second tread rib 19, and the third tread rib 20 are evenly distributed in the transverse direction and fixedly connected to the first and second middle tread blocks. The rectangular structure with a depth of 0.5 to 3.5 mm and a width of 1 to 5 mm is adapted to the tread requirements, which can enhance the connection stability of the tread blocks, distribute the driving force, avoid deformation and misalignment of the tread blocks, improve the overall rigidity of the tread, and ensure the structural reliability during off-road driving in rain and snow.

[0033] The first groove bottom self-cleaning device 15, the second groove bottom self-cleaning device 16, the third groove bottom self-cleaning device 17, the fourth groove bottom self-cleaning device 21, the fifth groove bottom self-cleaning device 22, the sixth groove bottom self-cleaning device 23, and the seventh groove bottom self-cleaning device 14 are all integrally formed with the bottom of the corresponding tread groove. The depth c of each groove bottom self-cleaning device is between 0.5 and 3.5 mm, the width d of each groove bottom self-cleaning device is between 1 and 5 mm, and the spacing between two adjacent groove bottom self-cleaning devices is 8 to 12 mm. The design of the seven types of groove bottom self-cleaning devices being integrally formed with the bottom of the tread groove, with a depth of 0.5 to 3.5 mm, a width of 1 to 5 mm, and a spacing of 8 to 12 mm, is scientific and reasonable. The serrated structure can efficiently scrape away mud and sand from the bottom of the groove, prevent groove blockage, ensure smooth drainage and mud removal from the tread groove, and avoid reducing tire grip and off-road performance due to mud and sand accumulation.

[0034] The first shoulder tread block 4 has a trapezoidal structure, and the second shoulder tread block 5 has a triangular structure. The outlines of both are adapted and optimized according to the edge shapes of the first central tread block 1 and the second central tread block 2. The heights of the first shoulder tread block 4 and the second shoulder tread block 5 are consistent with the height of the first central tread block 1, and the surface roughness of both is 1.6 to 3.2 μm, so as to improve the rigidity of the tread in all directions and make the force distribution more uniform. The first shoulder tread block 4 and the second shoulder tread block 5 are adapted to the edge of the central tread block, with consistent height and a surface roughness of 1.6 to 3.2 μm, which can improve the rigidity of the tread in all directions, make the force distribution more uniform, enhance the shoulder grip, avoid uneven wear during driving, extend tire life, and adapt to complex force scenarios in rain, snow and off-road driving.

[0035] The longitudinal tortuous groove has a bending angle of 120-150°, a width of 5-35mm, and a depth of 6-18mm. The inner wall of the longitudinal tortuous groove is provided with anti-slip protrusions, which are evenly distributed along the length of the longitudinal tortuous groove, with a protrusion height of 1-2mm. The design of the longitudinal tortuous groove with a bending angle of 120-150°, a width of 5-35mm, and a depth of 6-18mm, along with the evenly distributed 1-2mm high anti-slip protrusions on the inner wall, can quickly expel rain, snow, and mud. The protrusions enhance the friction of the inner wall of the groove, prevent the tire from slipping during driving, and improve the drainage and mud removal efficiency and driving stability under off-road conditions.

[0036] The first steel sheet 24, the second steel sheet 25, the third steel sheet 26, the fourth steel sheet 27, the fifth steel sheet 28, the sixth steel sheet 29, and the seventh steel sheet 30 are all arc-shaped structures, with a thickness of 0.8–1.2 mm for each sheet. The first steel sheet 24 and the second steel sheet 25 are symmetrically arranged on the upper surface of the first central tread block 1, and the third steel sheet 26 and the fourth steel sheet 27 are symmetrically arranged on the upper surface of the second central tread block 2. The remaining steel sheets are correspondingly distributed on the third central tread block 3 and the shoulder tread blocks. The first steel sheet 24 to the seventh steel sheet 30 are 0.8–1.2 mm thick arc-shaped structures, symmetrically distributed on the surface of each tread block, which can enhance the support strength of the tread blocks, distribute the force on the tread, and avoid local overload damage to the tread blocks. At the same time, the arc-shaped design adapts to the direction of grip force, improves grip stability in rainy and snowy weather, and ensures driving safety.

[0037] Both the first sidewall trim 7 and the second sidewall trim 8 are elongated raised structures, each 50-80mm long, 10-15mm wide, and 1-3mm high. The cross-section of the first sidewall trim 7 is semi-circular, while the cross-section of the second sidewall trim 8 is trapezoidal. When the two are arranged alternately, the gap between adjacent trims is 5-8mm. The elongated raised structures of the first sidewall trim 7 and the second sidewall trim 8, with their lengths of 50-80mm, widths of 10-15mm, and heights of 1-3mm, are adapted to the needs of the tire sidewall. Their alternating arrangement forms a three-dimensional decoration, enhancing the tire's aesthetics. At the same time, the raised structures enhance sidewall protection, preventing scratches and damage during off-road driving.

[0038] The first tread groove 6, the third tread groove 10, and the fifth tread groove 12 are lateral auxiliary tread grooves, while the second tread groove 9, the fourth tread groove 11, and the sixth tread groove 13 are longitudinal main tread grooves. The lateral auxiliary tread grooves and the longitudinal main tread grooves are interconnected to form a crisscrossing groove network. The width of the lateral auxiliary tread grooves is 3-8mm and the depth is 6-15mm. The first tread groove 6, the third tread groove 10, and the fifth tread groove 12 are interconnected with the second tread groove 9, the fourth tread groove 11, and the sixth tread groove 13. The lateral grooves with a width of 3-8mm and a depth of 6-15mm and the longitudinal grooves form a groove network, which can quickly drain rain, snow, and mud, avoid tread hydroplaning and mud accumulation, and significantly improve the tire's mud and water drainage capabilities in rain and snow off-road scenarios.

[0039] The surfaces of the first central tread block 1, the second central tread block 2, and the third central tread block 3 are all equipped with anti-slip textures. The anti-slip textures are a cross-shaped mesh structure with a texture depth of 0.3–1.5 mm. The length of each central tread block is 80–120 mm, and the width is 40–60 mm. The spacing between adjacent central tread blocks is consistent with the width of the lateral auxiliary tread grooves. The cross-shaped mesh anti-slip textures on the surfaces of the first central tread block 1, the second central tread block 2, and the third central tread block 3, combined with the design of 80–120 mm length, 40–60 mm width, and appropriate spacing, can increase the friction between the tire tread and the ground, improve grip performance, and at the same time enhance the rigidity of the tread blocks themselves, prevent deformation during driving, and ensure driving stability during off-road driving in rain and snow.

[0040] The first, second, third, fourth, fifth, sixth, and seventh self-cleaning devices 15, 16, 17, 21, 22, 23, and 14 are all serrated, with a tooth height of 0.5–1 mm and a tooth pitch of 3–5 mm. The length of each self-cleaning device is matched to the length of the corresponding tread groove, and the connection surface with the bottom of the tread groove is an arc-shaped transition structure. The serrated structure and arc-shaped transition of the seven types of self-cleaning devices, with their lengths matched to the corresponding tread grooves, ensure a firm connection and effectively scrape away mud and sand from the grooves, preventing blockages and ensuring the continuous and stable drainage and mud removal function of the tread grooves. This reduces wear on the tires caused by mud and sand, and improves off-road adaptability and service life.

[0041] This design features: the cross-mesh anti-slip texture of the first central tread block 1 and the arc-shaped steel sheet group enhance grip and friction; the first tread groove 6 and the lateral auxiliary grooves connect with the longitudinal main tread grooves to form a groove network, quickly expelling rain, snow, and mud; the first groove bottom self-cleaning device 15 and the serrated structure scrape away mud and sand at the bottom of the groove to prevent clogging; the first tread rib 18 and the tread block enhance the rigidity of the tread block; the anti-slip protrusions of the longitudinal tortuous grooves improve anti-slip performance; and the shoulder tread block ensures even force distribution. Instructions for use: This tire is suitable for rainy and snowy off-road conditions. It can be installed normally on the corresponding vehicle model's rim. During driving, it relies on the longitudinal and lateral grooves and the self-cleaning device to achieve efficient mud and water discharge. The tread blocks, steel sheets, and tread ribs ensure stable grip, and the sidewall trim provides protection. It can perform excellent off-road and mud-dissipating performance without any additional operation.

[0042] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0043] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rain and snow off-road tire with superior mud-removal performance, characterized in that, include: The first central pattern block (1), the second central pattern block (2), the third central pattern block (3), the first shoulder pattern block (4), the second shoulder pattern block (5), the first sidewall decoration (7), and the second sidewall decoration (8) are respectively provided with a first pattern groove (6), a second pattern groove (9), a third pattern groove (10), a fourth pattern groove (11), a fifth pattern groove (12), and a sixth pattern groove (13) between the first central pattern block (1), the second central pattern block (2), the third central pattern block (3), the first shoulder pattern block (4), and the second shoulder pattern block (5); The bottoms of the first groove (6), the second groove (9), the third groove (10), the fourth groove (11), the fifth groove (12), and the sixth groove (13) are respectively provided with a first groove bottom self-cleaning device (15), a second groove bottom self-cleaning device (16), a third groove bottom self-cleaning device (17), a fourth groove bottom self-cleaning device (21), a fifth groove bottom self-cleaning device (22), a sixth groove bottom self-cleaning device (23), and a seventh groove bottom self-cleaning device (14); The first central patterned block (1) and the second central patterned block (2) are connected by a first patterned rib (18), a second patterned rib (19) and a third patterned rib (20). The first central patterned block (1), the second central patterned block (2), the third central patterned block (3), the first shoulder patterned block (4) and the second shoulder patterned block (5) are respectively provided with a first steel plate (24), a second steel plate (25), a third steel plate (26), a fourth steel plate (27), a fifth steel plate (28), a sixth steel plate (29) and a seventh steel plate (30). The first sidewall decoration (7) and the second sidewall decoration (8) are arranged alternately along the tire circumference to form a three-dimensional sidewall decoration. Longitudinal zigzag grooves are also provided between the first shoulder tread block (4), the second shoulder tread block (5), the first middle tread block (1), and the second middle tread block (2).

2. The rain and snow off-road tire with excellent mud removal performance according to claim 1, characterized in that: The first tread rib (18), the second tread rib (19) and the third tread rib (20) are evenly distributed along the transverse direction of the tire, and one end of the first tread rib (18), the second tread rib (19) and the third tread rib (20) are fixedly connected to the side wall of the first middle tread block (1), and one end of the first tread rib (18), the second tread rib (19) and the third tread rib (20) are fixedly connected to the side wall of the second middle tread block (2).

3. The rain and snow off-road tire with excellent mud-removal performance according to claim 1, characterized in that: The first groove bottom self-cleaning device (15), the second groove bottom self-cleaning device (16), the third groove bottom self-cleaning device (17), the fourth groove bottom self-cleaning device (21), the fifth groove bottom self-cleaning device (22), the sixth groove bottom self-cleaning device (23) and the seventh groove bottom self-cleaning device (14) are all integrally formed with the bottom of the corresponding patterned groove.

4. The rain and snow off-road tire with excellent mud removal performance according to claim 1, characterized in that: The first shoulder pattern block (4) has a trapezoidal structure, and the second shoulder pattern block (5) has a triangular structure. The heights of the first shoulder pattern block (4) and the second shoulder pattern block (5) are consistent with the height of the first middle pattern block (1).

5. The rain and snow off-road tire with excellent mud removal performance according to claim 1, characterized in that: The inner wall of the longitudinal tortuous groove is provided with anti-slip protrusions, which are evenly distributed along the length of the longitudinal tortuous groove.

6. The rain and snow off-road tire with excellent mud-removal performance according to claim 1, characterized in that: The first steel sheet (24), the second steel sheet (25), the third steel sheet (26), the fourth steel sheet (27), the fifth steel sheet (28), the sixth steel sheet (29), and the seventh steel sheet (30) are all arc-shaped structures. The first steel sheet (24) and the second steel sheet (25) are symmetrically arranged on the upper surface of the first central patterned block (1), and the third steel sheet (26) and the fourth steel sheet (27) are symmetrically arranged on the upper surface of the second central patterned block (2).

7. The rain and snow off-road tire with excellent mud-removal performance according to claim 1, characterized in that: Both the first sidewall trim (7) and the second sidewall trim (8) are elongated protruding structures. The cross-section of the first sidewall trim (7) is semi-circular, and the cross-section of the second sidewall trim (8) is trapezoidal.

8. The rain and snow off-road tire with excellent mud removal performance according to claim 1, characterized in that: The first pattern groove (6), the third pattern groove (10) and the fifth pattern groove (12) are transverse auxiliary pattern grooves, and the second pattern groove (9), the fourth pattern groove (11) and the sixth pattern groove (13) are longitudinal main pattern grooves. The transverse auxiliary pattern grooves and the longitudinal main pattern grooves are interconnected to form a crisscrossing groove network.

9. The rain and snow off-road tire with excellent mud removal performance according to claim 1, characterized in that: The surfaces of the first central patterned block (1), the second central patterned block (2), and the third central patterned block (3) are all provided with anti-slip textures, which are cross-mesh structures.

10. A rain and snow off-road tire with excellent mud-removal performance according to claim 1, characterized in that: The first trench bottom self-cleaning device (15), the second trench bottom self-cleaning device (16), the third trench bottom self-cleaning device (17), the fourth trench bottom self-cleaning device (21), the fifth trench bottom self-cleaning device (22), the sixth trench bottom self-cleaning device (23) and the seventh trench bottom self-cleaning device (14) are all serrated.

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