Driving and dragging dual-purpose tire

Abstract

The utility model provides a driving and dragging dual-purpose tire, which belongs to the field of tires and comprises two adjacent rows of central pattern blocks which are arranged at intervals and are in central symmetry, and the central pattern blocks are distributed along the circumferential direction of a tread; the tread pattern blocks are two rows of tread pattern blocks which are respectively arranged on one side of the central pattern block at intervals and are distributed along the circumferential direction of the tread; the tire shoulder pattern blocks are arranged on the inner side and the outer side of the tire tread and distributed in the circumferential direction of the tire tread, an inclined tire shoulder transverse groove is formed between every two adjacent tire shoulder pattern blocks in the circumferential direction of the tire tread, the end, close to the tire tread pattern blocks, of each tire shoulder transverse groove is open, and the other end of each tire shoulder transverse groove penetrates through the corresponding tire shoulder pattern block and extends to the corresponding tire shoulder; wherein the width ratio of the central pattern blocks to the tread pattern blocks to the tire shoulder pattern blocks is 1: 1: 1.4. The driving and towing dual-purpose tire solves the technical problems of poor durability, short service life and the like of the driving and towing dual-purpose tire in the prior art.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of tire, especially relate to a drive and tow dual-purpose tire. BACKGROUND

[0002] In the prior art, drive and tow dual-purpose tires are widely used in various vehicles as a tire that needs to meet both driving and towing functions, and their design and performance have important influence on the overall operating efficiency and safety of the vehicle. However, the current drive and tow dual-purpose tires generally have poor durability and short service life, which is difficult to adapt to the actual use requirements of high strength and long time load.

[0003] The tread pattern design of the existing drive and tow dual-purpose tire is a key factor affecting its performance. In the prior art, the design of the tread pattern cannot effectively disperse the force, resulting in local stress concentration and accelerating the generation and expansion of cracks. On wet and slippery roads or non-paved roads, the drainage performance and anti-skid performance of the existing tread pattern are insufficient, which further reduces the durability of the tire. In addition, the existing pattern design performs poorly in adaptability to both driving and towing conditions, and cannot ensure good load-carrying capacity and fatigue performance while taking into account traction and wear resistance.

[0004] Therefore, by optimizing the design of the tread pattern, the load distribution of the drive and tow dual-purpose tire can be improved, stress concentration can be reduced, and the drainage performance and anti-skid performance can be improved, which is an important way to solve the problems of poor durability and short service life of the existing tire. This improvement can significantly improve the performance of the tire under complex conditions, prolong its service life, and reduce the maintenance cost and operating risk of the vehicle. SUMMARY

[0005] The details of one or more embodiments of the utility model are presented in the following drawings and description, so that other features, purposes and advantages of the present application are more concise and easy to understand.

[0006] The utility model provides a drive and tow dual-purpose tire, solve the technical problem that drive and tow dual-purpose tire of prior art poor durability, short service life etc., have can effectively improve load distribution, reduce stress concentration, improve drainage performance, anti -skid performance and durability, prolong the service life etc.

[0007] The utility model discloses a drive and tow dual-purpose tire, include:

[0008] Central pattern block, the central pattern block is the two rows of central pattern blocks that are arranged at intervals and are center-symmetrical, and is distributed along the circumference of the tread;

[0009] Tread pattern block, the tread pattern block is two rows of tread pattern blocks that are arranged at intervals on one side of the central pattern block respectively, and is distributed along the circumference of the tread;

[0010] The shoulder blocks are arranged on the inner and outer sides of the tread and are arranged circumferentially along the tread. An inclined shoulder transverse groove is arranged between two adjacent shoulder blocks circumferentially along the tread. The inclined shoulder transverse groove is open at one end close to the shoulder block and extends through the shoulder block to the shoulder at the other end.

[0011] The width ratio of the central blocks, the tread blocks and the shoulder blocks is 1:1:1.4.

[0012] In some embodiments, the dual-purpose tire further comprises:

[0013] The central longitudinal groove is in a straight line and is arranged between the two rows of central blocks.

[0014] The tread longitudinal groove is in a variable-length broken line structure and is arranged between the adjacent central blocks and the tread blocks.

[0015] The shoulder longitudinal groove is in a straight line and is arranged between the adjacent tread blocks and the shoulder blocks.

[0016] The width of the tread longitudinal groove is smaller than the width of the central longitudinal groove, which is smaller than the width of the shoulder longitudinal groove.

[0017] In some embodiments, a groove is arranged on the shoulder, the shoulder transverse groove is connected to the groove, a boss is arranged on the shoulder transverse groove, the angle α between the shoulder transverse groove and the tire axial direction is 12°-15°, and the groove wall angle of the shoulder transverse groove is 12°-16°.

[0018] In some embodiments, an arc-shaped transverse groove is arranged on the shoulder block, the arc-shaped transverse groove extends from one side of the shoulder block to the other side of the shoulder block, the width of the arc-shaped transverse groove is 0.4mm-0.6mm, and the depth of the arc-shaped transverse groove is less than 2mm.

[0019] In some embodiments, an inclined central transverse groove is formed between two adjacent central blocks circumferentially along the tire, and an inclined tread transverse groove is formed between two adjacent tread blocks circumferentially along the tire. The angle β between the central transverse groove and the tire axial direction is 12°-15°, the angle β between the tread transverse groove and the tire axial direction is 12°-15°, the groove wall angle of the central transverse groove and the tread transverse groove is 0°, the width of the central transverse groove and the tread transverse groove is less than 1mm, and the depth of the central transverse groove and the tread transverse groove is 1 / 2-2 / 3 of the depth of the shoulder longitudinal groove.

[0020] In some embodiments, S-shaped steel sheets are arranged on the central blocks and the tread blocks, respectively parallel to the adjacent central transverse grooves and the tread transverse grooves, the width of the S-shaped steel sheets is less than 1mm, and the depth of the S-shaped steel sheets is the same as the depth of the central transverse grooves.

[0021] In some embodiments, the ratio of the circumferential length of the long broken line of the tread longitudinal groove to the circumferential length of the short broken line of the tread longitudinal groove is 2:1.

[0022] In some embodiments, the width of the tread longitudinal groove is 2mm-3mm, the width of the central longitudinal groove is 3mm-5mm, the width of the shoulder longitudinal groove is 8mm-9mm, and the depth of the tread longitudinal groove is 1 / 2-2 / 3 of the depth of the shoulder longitudinal groove.

[0023] In some embodiments, the groove wall angle of the central longitudinal groove is 1.5°-2.5°, and the groove wall angle of the shoulder longitudinal groove is 14°-16°.

[0024] In some embodiments, the bottom of the central block, the tread block and the shoulder block are all transitioned by full circular arcs.

[0025] Compared with the prior art, the utility model has the advantages that:

[0026] 1. The central blocks in the utility model are arranged in two rows in a central symmetry, are distributed along the tread circumferential direction, form balanced friction surfaces with the tread blocks on both sides, ensure the stability and the gripping force of the tire under the driving and dragging conditions, meanwhile, the shoulder blocks are arranged along the circumferential direction and are connected with the tread through the inclined shoulder transverse grooves, provide additional support force and guiding ability under the cornering and complex road conditions, significantly improve the vehicle handling performance, the width of the shoulder blocks is increased, the rigidity of the shoulder blocks is increased, the impact and deformation vibration of the front end of the shoulder blocks during the rolling process of the tire is small, the slip vibration of the rear end is reduced, which is beneficial to reducing the tire noise, and the super wide driving surface makes the tire driving more stable and the driving performance more significant.

[0027] 2. The central longitudinal groove, the tread longitudinal groove and the shoulder longitudinal groove are designed according to the width ratio in the utility model, form a multi-level drainage system, ensure the drainage efficiency on the rainy day and the wet road surface, and prevent the skidding.

[0028] 3. The shoulder transverse groove is connected with the groove on the shoulder in the utility model, and the wear resistance and the buffering performance of the shoulder are improved through the setting of the boss. The groove wall angle of the shoulder transverse groove is designed to be 12°-16°, which ensures the groove deformation resistance under the complex road conditions, and further prolongs the service life of the tire.

[0029] 4、The utility model discloses the inclination angle of central transverse groove and the tread transverse groove is designed in 12 ° ~ 15 ° range, cooperates the embedding of S type steel sheet, makes the mutual support between S type steel sheet when the tire is under heavy load and brake receives greater load, suppresses the deformation of the pattern block that lies down, maintains higher pattern block rigidity, can guarantee the steering performance of tire at the same time, further improves the braking performance of tire.

[0030] 5、The utility model discloses the structure design of long broken line and short broken line alternation of tread longitudinal pattern groove, through the distribution of circumferential length ratio 2:1, makes the diversification of drainage path of tread pattern in the process of ground contact, effectively improves the drainage efficiency, long broken line part provides greater drainage section, short broken line part strengthens the directivity and variability of drainage path, thereby optimizing the drainage performance and anti -skid ability of tire.

[0031] 6、The utility model discloses the bottom of central pattern block, tread pattern block and shoulder pattern block all adopts full circular arc transition design, effectively reduces the formation of stress concentration point in the process of tire operation, improves the overall fatigue resistance and uniformity distribution. In addition, the precise control of various groove width, depth and groove wall angle, ensure the dynamic balance and low noise characteristics of tire when running at high speed. BRIEF DESCRIPTION OF DRAWINGS

[0032] The drawings described herein are used to provide further understanding of the utility model, and constitute a part of the utility model, and the illustrative embodiment of the utility model and its explanation are used to explain the utility model, and do not constitute improper limitation to the utility model. In the drawings:

[0033] Figure 1 It is the structure schematic diagram of the utility model embodiment provided for towable tire of towed two;

[0034] Figure 2 It is the structure schematic diagram of the utility model embodiment provided for towable tire of towed two; Figure 1 The tire pattern development drawing of A-A direction in it;

[0035] Figure 3 It is the tire pattern development drawing of B-B direction in it; Figure 1 The tire pattern development drawing of C-C direction in it;

[0036] Figure 4 It is the tire pattern development drawing of D-D direction in it; Figure 1 The tire pattern development drawing of C-C direction in it;

[0037] Figure 5 It is the tire pattern development drawing of D-D direction in it; Figure 1 The tire pattern development drawing of C-C direction in it;

[0038] Figure 6 The utility model provides a Figure 1 The tire pattern development drawing in F-F direction

[0039] Figure 7 The utility model provides a Figure 1 The tire pattern development drawing in F-F direction

[0040] In above each figure:

[0041] 1-central pattern block;2-tread pattern block;3-shoulder pattern block;4-central longitudinal pattern groove;5-tread longitudinal pattern groove;6-shoulder longitudinal pattern groove;7-shoulder transverse groove;8-tuberosity;9-groove;10-central transverse groove;11-tread transverse groove;12-S type steel sheet;13-arc transverse groove. Specific implementation

[0042] In order to make the purpose, technical scheme and advantage of the utility model more clearly, the following is combined with the figure and embodiment, and the utility model is described and explained.It should be understood that the specific embodiment described here is only used to explain the utility model, and is not used to limit the utility model.Based on the embodiment provided by the utility model, all other embodiments obtained by the person skilled in the art without making creative labor belong to the scope of protection of the utility model.

[0043] The utility model embodiment provides a drive tow dual-purpose tire, reference Figures 1-7As shown, the dual-purpose tire for driving and towing at least includes central blocks 1, tread blocks 2 and shoulder blocks 3. The central blocks 1 are two rows of central blocks 1 arranged at intervals and symmetrically at the center, and are distributed along the circumference of the tread. The tread blocks 2 are two rows of tread blocks 2 arranged at intervals on one side of the central blocks 1 respectively, and are distributed along the circumference of the tread. The shoulder blocks 3 are arranged on the inner and outer sides of the tread and arranged along the circumference of the tread. An inclined shoulder transverse groove 7 is arranged between two adjacent shoulder blocks 3 along the circumference of the tread. One end of the shoulder transverse groove 7 is open near the tread block 2, and the other end penetrates the shoulder block 3 and extends to the shoulder. The width ratio of the central blocks 1, the tread blocks 2 and the shoulder blocks 3 is 1:1:1.4. The dual-purpose tire for driving and towing has traction and driving performance at the same time by arranging the central blocks 1, the tread blocks 2 and the shoulder blocks 3 on the tread. The two rows of central blocks 1 symmetrically arranged at the center can provide straight-line stability and good drainage performance. The arrangement of the tread blocks 2 further improves the tire grip, which is suitable for various complex road conditions. The shoulder blocks 3 are connected by the inclined shoulder transverse groove 7, which provides stronger lateral drainage capacity and anti-skid capacity, and improves the stability of the tire in the curve driving. The design of the width ratio of the central blocks 1, the tread blocks 2 and the shoulder blocks 3 being 1:1:1.4 ensures uniform distribution of the tire ground contact area, optimizes the overall performance of the tire, and the wider shoulder blocks 3 can further increase the rigidity of the shoulder blocks 3, improve the support performance of the shoulder part on the ground, and prevent the shoulder from appearing abnormal wear and eccentric wear. The unique combination of the central blocks 1, the tread blocks 2 and the shoulder blocks 3 significantly improves the tire grip and stability, and reduces the risk of slipping during driving. The design of the inclined shoulder transverse groove 7 further improves the drainage efficiency of the tire, effectively reduces the water floating phenomenon in wet road driving, and enhances the lateral stability and curve grip performance of the tire.

[0044] In some embodiments, the width ratio of the central blocks 1, the tread blocks 2 and the shoulder blocks 3 can be adjusted slightly based on the actual needs on the basis of 1:1:1.4 to adapt to different road conditions and performance requirements. The angle and depth of the inclined shoulder transverse groove 7 can also be optimized according to specific use scenarios to adapt to different drainage and anti-skid requirements of highways or off-road roads.

[0045] Further, the dual-purpose tire also comprises a central longitudinal groove 4, a tread longitudinal groove 5 and a shoulder longitudinal groove 6. The central longitudinal groove 4 is linear, and is arranged between the two rows of central blocks 1. The tread longitudinal groove 5 is of a variable-length polyline structure, and is arranged between the adjacent central blocks 1 and the tread blocks 2. The shoulder longitudinal groove 6 is linear, and is arranged between the adjacent tread blocks 2 and the shoulder blocks 3. The width of the tread longitudinal groove 5 is smaller than that of the central longitudinal groove 4, and the width of the central longitudinal groove 4 is smaller than that of the shoulder longitudinal groove 6. The linear design of the central longitudinal groove 4 can effectively improve the straight-line driving stability of the tire, and optimize the drainage performance. The variable-length polyline structure of the tread longitudinal groove 5 can enhance the anti-skid performance and self-cleaning ability of the tread under different road conditions. The linear design of the shoulder longitudinal groove 6, in combination with the shoulder blocks 3 and the tread blocks 2, can further improve the drainage efficiency and lateral anti-skid performance of the tire. The longitudinal grooves of different widths, through reasonable gradient design, can ensure uniform stress during driving, and enhance the service life. The design of the embodiment can improve the drainage capacity and anti-skid performance of the tire on wet and slippery road surfaces, and can significantly reduce the skidding phenomenon under conditions such as rain and high speed. The synergistic effect of the shoulder longitudinal groove 6 and the tread longitudinal groove 5 can significantly improve the lateral stability and grip of the tire. At the same time, the width gradient design can ensure the reasonable distribution of ground pressure, effectively slow down the tire wear, and prolong the service life.

[0046] Further, a groove 9 is arranged on the shoulder, the shoulder transverse groove 7 is connected with the groove 9, a boss 8 is arranged on the shoulder transverse groove 7, the angle α between the shoulder transverse groove 7 and the tire axial direction is 12°-15°, and the groove wall angle of the shoulder transverse groove 7 is 12°-16°. The design of the groove 9 can reduce the material of the shoulder part, reduce the hysteresis loss of the shoulder part during high-speed driving, make the heat of the shoulder part fully dissipate, and improve the service life of the tire. The boss 8 arranged on the shoulder transverse groove 7 can enhance the anti-skid performance of the tire under lateral stress, and improve the tire grip by increasing the friction. The 12°-15° angle between the shoulder transverse groove 7 and the tire axial direction can effectively guide the flow, and at the same time ensure the lateral stability of the tire. The groove wall angle is controlled within 12°-16°, which further optimizes the drainage and durability performance of the shoulder transverse groove 7. The structural design of the shoulder transverse groove 7 can reduce the risk of skidding on wet and slippery road surfaces, and provide higher stability during turning and braking. The reasonable range of the groove wall angle optimizes the durability of the tire, and prolongs the service life of the tire. The overall design can significantly improve the adaptability and safety of the tire under complex road conditions.

[0047] Further, the shoulder block 3 is provided with an arc-shaped transverse groove 13 extending from one side of the shoulder block 3 to the other side of the shoulder block 3, the width of the arc-shaped transverse groove 13 is 0.4mm-0.6mm, and the depth of the arc-shaped transverse groove 13 is less than 2mm. The design of the arc-shaped transverse groove 13 cuts the shoulder block 3 transversely, increases the driving performance of the tire, reduces the heat rise of the shoulder during high-speed driving, and improves the high-speed driving performance of the tire; the width of the arc-shaped transverse groove 13 is controlled within the range of 0.4mm-0.6mm, effectively balancing the drainage efficiency and the strength of the shoulder; the depth of the arc-shaped transverse groove 13 is less than 2mm, which mainly breaks the wedge-shaped water film formed on the tire and the accumulated water on the road surface, and drains the accumulated water in the contact area, improving the wet skid resistance of the tire; the arc-shaped transverse groove 13 improves the anti-skid performance of the tire on wet and complex road surfaces by optimizing the drainage capacity of the shoulder block 3; the reasonable width and depth range makes the groove not only efficient in drainage but also maintains the strength and stability of the shoulder; the arc-shaped design also reduces the noise of the tire during high-speed driving, which helps to improve the comfort and safety of driving.

[0048] Further, an inclined central transverse groove 10 is formed between two adjacent central blocks 1 along the tire circumferential direction, and an inclined tread transverse groove 11 is formed between two adjacent tread blocks 2 along the tire circumferential direction, the angle β between the central transverse groove 10 and the tire axial direction and the angle β between the tread transverse groove 11 and the tire axial direction are both 12°-15°, the wall angle of the central transverse groove 10 and the wall angle of the tread transverse groove 11 are both 0°, the width of the central transverse groove 10 and the width of the tread transverse groove 11 are both less than 1mm, and the depth of the central transverse groove 10 and the depth of the tread transverse groove 11 are both 1 / 2-2 / 3 of the depth of the shoulder longitudinal pattern groove 6. The central transverse groove 10 and the tread transverse groove 11 are both designed as inclined type, and the 12°-15° angle between the groove and the tire axial direction can effectively guide the water flow away from the ground, reducing the water floating phenomenon on the wet road surface; the wall angle is designed as 0°, which makes the groove have the maximum drainage cross section and improves the drainage efficiency; the width of less than 1mm balances the drainage performance of the groove and the overall strength requirement of the tire; the reasonable proportional relationship (1 / 2-2 / 3) between the depth and the shoulder longitudinal pattern groove 6 ensures that the groove can fully function without weakening the structural strength of the tire; the setting of the inclined central transverse groove 10 and the tread transverse groove 11 effectively improves the drainage capacity and anti-skid performance of the tire on wet road surface; the 12°-15° angle design improves the grip of the tread pattern and enhances the stability of the tire during acceleration, braking and turning; the structure design of the wall angle of 0° further optimizes the drainage efficiency and durability of the groove. The reasonable width and depth range significantly improves the anti-wear performance of the tire and prolongs the service life of the tire.

[0049] Further, the central block 1 and the tread block 2 are provided with S-shaped steel sheets 12, which are parallel to the adjacent central transverse grooves 10 and the tread transverse grooves 11, respectively, and the width of the S-shaped steel sheets 12 is less than 1 mm, and the depth of the S-shaped steel sheets 12 is the same as that of the central transverse grooves 10. The S-shaped steel sheets 12 on the central block 1 and the tread block 2 can form more micro gripping points during grounding by the parallel design with the central transverse grooves 10 and the tread transverse grooves 11, thereby significantly improving the traction and anti-skid performance of the tire; the width of the S-shaped steel sheets 12 is controlled within the range of less than 1 mm, which can ensure that the steel sheets 12 are closely attached to the surface of the block, and also avoid excessive weakening of the tread structure; the depth of the S-shaped steel sheets 12 is the same as that of the central transverse grooves 10, which can ensure that the S-shaped steel sheets 12 can participate in the drainage function cooperatively, while maintaining the overall flatness and stability of the tread; the S-shaped steel sheets 12 effectively improve the gripping performance of the tire on wet and muddy road surfaces, especially showing more excellent stability during acceleration and braking; the microstructure design of the S-shaped steel sheets 12 increases the anti-skid ability of the tire, while enhancing the overall strength of the block; the parallel layout with the grooves improves the drainage efficiency of the tire, and significantly reduces the noise of the tire during high-speed driving.

[0050] Further, the ratio of the circumferential length of the long broken line of the tread longitudinal groove 5 to the circumferential length of the short broken line of the tread longitudinal groove 5 is 2:1. The tread longitudinal groove 5 adopts an alternating structure design of long broken lines and short broken lines, which is distributed by the ratio of 2:1 of the circumferential length, so that the tread pattern forms diversified drainage paths during grounding, effectively improving the drainage efficiency; the long broken line part provides a larger drainage cross section, and the short broken line part enhances the guidance and variability of the drainage path, thereby optimizing the drainage performance and anti-skid ability of the tire; the 2:1 ratio design of the circumferential length of the long broken line and the short broken line effectively improves the drainage efficiency and anti-skid performance of the tire, especially performs excellently on complex road conditions and wet road surfaces; the diversified pattern groove structure enhances the grounding performance of the tire, improves the handling and stability of the vehicle; the reasonable proportion distribution reduces the wear of the tire pattern, significantly prolongs the service life of the tire.

[0051] Further, the width of the tread longitudinal groove 5 is 2mm-3mm, the width of the central longitudinal groove 4 is 3mm-5mm, the width of the shoulder longitudinal groove 6 is 8mm-9mm, and the depth of the tread longitudinal groove 5 is 1 / 2-2 / 3 of the depth of the shoulder longitudinal groove 6. The width and depth of the tread longitudinal groove 5, the central longitudinal groove 4 and the shoulder longitudinal groove 6 are reasonably designed to optimize the drainage path and the ground performance of the tire through clear gradient changes. The small width (2mm-3mm) of the tread longitudinal groove 5 enhances the water guide effect of the groove, the medium width (3mm-5mm) of the central longitudinal groove 4 provides additional drainage capacity, and the large width (8mm-9mm) of the shoulder longitudinal groove 6 ensures the stability of the shoulder part when draining and under stress; the depth relationship (1 / 2-2 / 3) ensures that the groove can efficiently drain water without affecting the overall structural strength of the tire; the combination of longitudinal grooves with different widths and depth gradients effectively improves the drainage performance of the tire on wet road surface, while ensuring uniform stress distribution in the tread and shoulder areas and reducing local wear; the reasonable depth design improves the drainage efficiency of the tire and enhances the durability; the overall design significantly improves the grip and handling of the tire on various road conditions.

[0052] Further, the wall angle of the central longitudinal groove 4 is 1.5°-2.5°, and the wall angle of the shoulder longitudinal groove 6 is 14°-16°. The wall angle of the central longitudinal groove 4 is designed to be 1.5°-2.5° to ensure drainage efficiency while providing good structural strength, so that the groove can withstand the pressure of the tire during high-speed driving and turning; the wall angle of the shoulder longitudinal groove 6 is designed to be 14°-16° to optimize the drainage capacity of the shoulder area and enhance the anti-skid performance of the shoulder part; the reasonable distribution of the wall angle makes the central and shoulder areas of the tire achieve a good balance in structural strength and drainage performance; the low angle design of the central longitudinal groove 4 reduces friction and prolongs the service life of the tire, while the high angle design of the shoulder longitudinal groove 6 significantly improves the drainage efficiency and lateral stability of the shoulder. The overall design effectively enhances the anti-skid ability and durability of the tire.

[0053] Further, the bottom of the central block 1, the tread block 2 and the shoulder block 3 all adopt full circular arc transition. The full circular arc transition design of the bottom of the central block 1, the tread block 2 and the shoulder block 3 makes the stress distribution of the tread block 2 more uniform when stressed, thereby reducing the risk of cracks or damage caused by local stress concentration; the full circular arc transition improves the bonding strength between the block and the tire, and improves the overall durability of the tread. At the same time, the full circular arc transition design effectively optimizes the drainage path, further improves the drainage performance of the tire on the wet road surface; the design of the full circular arc transition reduces the wear of the tire block and prolongs the service life of the tire; the uniform stress distribution improves the overall anti-deformation ability of the tire, suitable for long-term use in complex road conditions; the design also optimizes the drainage performance, improves the grip and handling performance of the tire, especially on rainy or wet road surfaces.

[0054] The technical features of the above-described embodiments can be combined in any manner. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described, but as long as the combinations of the technical features do not exist, they should be considered as within the scope of the present disclosure.

[0055] The above-described embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation on the scope of the present application. It should be pointed out that for ordinary skilled persons in the art, some modifications and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A dual purpose tire for both towing and driving, characterized in that, The application relates to a tire tread structure. The application relates to a tire tread structure. The application relates to a tire tread structure. The application relates to a tire tread structure. The application relates to a tire tread structure.

2. The dual-purpose tire according to claim 1, wherein, The application relates to a tire tread structure. The application relates to a tire tread structure. The application relates to a tire tread structure. The application relates to a tire tread structure. The application relates to a tire tread structure.

3. The dual-purpose tire of claim 1, wherein, The application relates to a tire tread structure.

4. The dual-purpose tire of claim 1, wherein, The application relates to a tire tread structure.

5. The dual purpose tire of claim 2 wherein, The application relates to a tire tread structure.

6. The dual-purpose tire of claim 5, wherein, The application relates to a tire tread structure.

7. The dual purpose tire of claim 2 wherein, The application relates to a tire tread structure. The application relates to a tire tread structure. The application relates to a tire tread structure. The application relates to a tire tread structure. The application relates to a tire tread structure. The application relates to a tire tread structure. The application relates to a tire tread structure. The application relates to a tire tread structure. The application relates to a tire tread structure. The application relates to a tire tread structure. The application relates to a tire tread structure. The application relates to a tire tread structure. The application relates to a tire tread structure. The application relates to a tire tread structure. The application relates to a tire tread structure. The application relates to a tire tread structure. The application relates to a tire tread structure. The application relates to a tire tread structure. 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The application relates to a tire tread structure. The application relates to a tire tread structure. The application relates to a tire tread structure. The application relates to a tire tread structure. The application relates to a tire tread structure. The application relates to a tire tread structure. The application relates to a tire tread structure. The application relates to a tire tread structure. The application relates to a tire tread structure. The application relates to a tire tread structure. The application relates to a tire tread structure. The application relates to a tire tread structure. The application relates to a tire tread structure. The application relates to a tire tread structure. The application relates to a tire tread structure. The application relates to a tire tread structure. The application relates to a tire tread structure. The application relates to a tire tread structure. The application relates to a tire tread structure. The application relates to a tire tread structure. The application relates to a tire tread structure. The application relates to a tire tread structure. The application relates to a tire tread structure. The application relates to a tire tread structure. The application relates to a tire tread structure. The application relates to a tire tread structure. The application relates to a tire tread structure. The application relates to a tire tread structure. The application relates to a tire tread structure. The application relates to a tire tread structure. The application relates to a tire tread structure. The application relates to a tire tread structure. The application relates to a tire tread structure. The application relates to a tire tread structure. The application relates to a tire tread structure. The application relates to a tire tread structure. The application relates to a tire tread structure. The application relates to a tire tread structure. The application relates to a tire tread structure. The application relates to a tire tread structure. The application relates to a tire tread structure. The application relates to a tire tread structure. The application relates to a tire tread structure. The application relates to a tire tread structure. The application relates to a tire tread structure. The application relates to a tire tread structure. The application relates to a tire tread structure. The application relates to a tire tread structure. The application relates to a tire tread structure. The application relates to a tire tread structure. The application relates to a tire tread structure. The application relates to a tire tread structure. The application relates to a tire tread structure. The application relates to a tire tread structure. The application relates to a tire tread structure. The application relates to a tire tread structure. The application relates to a tire tread structure. The application relates to a tire tread structure. The application relates to a tire tread structure. The application relates to a tire tread structure. The application relates to a tire tread structure. The application relates to a tire tread structure. The application relates to a 8. The dual purpose tire of claim 2 wherein, The width of the central longitudinal groove is 3mm-5mm, and the width of the shoulder longitudinal groove is 8mm-9mm.

9. The dual purpose tire of claim 2 wherein, The groove wall angle of the central longitudinal groove is 1.5°-2.5°, and the groove wall angle of the shoulder longitudinal groove is 14°-16°.

10. The dual-purpose tire of claim 1, wherein, The bottom of the central block, the tread block and the shoulder block all adopt full circular arc transition.

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