Mining long-distance tire tread pattern and tire

Abstract

The invention provides a mining long-distance tire tread pattern and a tire. The risk of falling of tire shoulder pattern blocks is reduced. The mining long-distance tire pattern comprises a tire crown pattern, the tire crown pattern comprises pattern block groups which are uniformly distributed on a tire crown along the circumferential direction of a tire, and a transverse pattern groove is formed between every two adjacent pattern block groups; each pattern block group comprises edge pattern blocks on the two sides and at least one middle pattern block between the edge pattern blocks on the two sides.

Description

Technical Field

[0001] The invention relates to a mining vehicle tire, in particular to a mining long-distance tire pattern and a tire. Background Art

[0002] The tread pattern is an important part of improving vehicle performance and ensuring driving safety, and is a very critical design item in tire design. How to correctly choose the tire tread form is crucial. The appropriate tread tire form should be selected according to the vehicle's purpose, road conditions and speed.

[0003] In recent years, due to the safety of mining areas, the country has reduced the number of small mines, prompting major mining areas to quickly concentrate on large mines, which will also lead to a higher concentration of mining vehicles and a higher density of vehicles. The concentration and density of vehicles can easily lead to the failure to maintain the road surface in time, which will cause the tread to fall off and the impact to burst the tire. Summary of the invention

[0004] In order to solve the above problems, the present invention provides a long-distance mining tire pattern and a tire, which reduce the risk of shoulder tread blocks falling off.

[0005] The object of the present invention is achieved in the following manner: a long-distance mining tire pattern, including a crown pattern, the crown pattern including a pattern block group uniformly distributed along the circumference of the tire on the crown, and a transverse pattern groove formed between adjacent pattern block groups; each pattern block group includes side pattern blocks on both sides and a middle pattern block between the side pattern blocks on both sides, and at least one middle pattern block is provided; the side pattern block is at least one of the following three types: (i) When the tire is rolling, the edge of the edge tread block contacts the ground before the corner of the same edge tread block; (ii) In the plane view of the tire pattern, when the front edge I of the edge pattern block is close to the corner I of the middle pattern block and is located in front of the front edge I of the edge pattern block, and at this time, the corner A formed by the intersection of the front edge I of the edge pattern block and the outermost edge of the crown is located behind the corner I, the extension line of the front edge II intersects with the front edge I, and the intersection point is not tangent, and the corner is rounded at the intersection, and the corner I is located behind the extension line of the front edge II; (iii) The crown pattern is symmetrical in center, and the front edge of the left or right side pattern block contacts the ground before the corners of the same side pattern block; when the side pattern block just contacts the ground, the edge contacts the ground first due to the corners, so as to avoid the corners of the side pattern block from being damaged and falling off; At the same time, in the plane view of the tire pattern, the rear edge Ⅰ of this edge pattern block is close to the corner Ⅰ of the middle pattern block and is located behind the rear edge Ⅰ of the edge pattern block, and at this time, the corner A formed by the intersection of the rear edge Ⅰ of the edge pattern block and the edge of the crown is located in front of the corner Ⅰ, the extension line of the rear edge Ⅱ intersects with the rear edge Ⅰ, and the intersection is not tangent, and the corners are rounded at the intersection, and the corner Ⅰ is located in front of the extension line of the rear edge Ⅱ.

[0006] When the tire rolls, the edge of the edge pattern block contacts the ground earlier than the corners of the same edge pattern block: the edge of the edge pattern block forming the transverse pattern groove has a convex portion away from the center of the edge pattern block compared to the corners of the edge pattern blocks at both ends of this edge, and there is a point in the convex portion of the edge in front of the edge pattern block that is located in front of the corners of the edge pattern block at both ends of the edge, or there is a point in the convex portion of the edge of the side pattern block that is located behind the corners of the edge pattern block at both ends of the edge.

[0007] The crown pattern is symmetrical in the center, and the front edge of the left or right side edge pattern block contacts the ground earlier than the corners of the same side pattern block: for the same pattern block group, the front edge of the side pattern block and the front edge of the adjacent middle pattern block are tangent when forming the transverse pattern groove, and the front edge of the side pattern block is located in front of the straight line formed by the corners at both ends of the front edge of the right side edge pattern block.

[0008] For the same pattern block group, the front edge of the right side pattern block and the front edge of the adjacent middle pattern block are designed to be tangent when forming the transverse pattern groove, and the front edge of the right side pattern block is located in front of the straight line formed by the corners at both ends of the front edge of the right side pattern block; the rear edge of the right side pattern block is the arc edge I, and the rear edge II of the adjacent middle pattern block is a straight edge, and the extension line of the rear edge II of the straight edge to the arc edge I intersects with the arc edge I, and the intersection point is not tangent; Since the crown pattern is symmetrical in the center, the square edge of the left side pattern block and the rear edge of the adjacent middle pattern block are designed to be tangent when forming the transverse pattern groove; the front edge of the left side pattern block is the arc edge I, and the front edge II of the adjacent middle pattern block is a straight edge; the extension line of the rear edge II of the straight edge to the arc edge I intersects with the arc edge I, and the intersection point is not tangent; The edge of the edge pattern block with a tangent design of the transverse pattern groove is arc edge II. Compared with the straight line connecting the two ends of arc edge II, arc edge II makes the edge pattern block convex, and arc edge II is located in front of the two ends of the edge of the right side edge pattern block - edge III and edge B.

[0009] The corners Ⅰ of the edge pattern blocks are rounded; The arc edge Ⅰ of the edge pattern block makes the edge pattern block concave; The upper ends of the corners where stress is concentrated of the edge pattern blocks and the middle pattern blocks adjacent to the edge pattern blocks are cut.

[0010] In the same pattern block group, the edge pattern block is connected to the adjacent middle pattern block by a third reinforcing rib, and the third reinforcing rib at least includes a third reinforcing rib I, a third reinforcing rib II, and a third reinforcing rib III, and the third reinforcing rib I is located between the third reinforcing rib II and the third reinforcing rib III, and the thickness of the third reinforcing rib I is greater than the thickness of the third reinforcing rib II and the third reinforcing rib III; In the same tread block group, the middle tread blocks between the side tread blocks on both sides include middle tread blocks I and middle tread blocks II. Middle tread blocks I are adjacent to shoulder tread blocks. Two middle tread blocks II are arranged between the two middle tread blocks I. The outer periphery of one middle tread block II is adjacent to two middle tread blocks I, one middle tread block II and one transverse tread groove respectively. The two middle tread blocks II are connected by a first reinforcing rib. Middle tread blocks II are connected to one middle tread block I by a second reinforcing rib and are connected to another middle tread block I by a fourth reinforcing rib.

[0011] The depth of the first reinforcing rib is 1 / 5-1 / 3 of the depth of the transverse groove, the depth of the second reinforcing rib is 2 / 5-3 / 5 of the depth of the transverse groove, and the depth of the fourth reinforcing rib is 2 / 5-3 / 5 of the depth of the transverse groove; the depth of the third reinforcing rib I is greater than the depth of the first reinforcing rib and less than the depth of the second reinforcing rib, the depth of the third reinforcing rib II is 2 / 3-4 / 5 of the depth of the transverse groove, and the depth of the third reinforcing rib II is greater than the depth of the second reinforcing rib.

[0012] The transverse grooves include an oblique groove in the middle and arc grooves on both sides respectively connected to the ends of the oblique grooves, and the transverse grooves are symmetrical in center.

[0013] The second reinforcing rib and the fourth reinforcing rib have the same depth.

[0014] The ratio of the area between the edge pattern blocks and the middle pattern block I ranges from 105% to 120%.

[0015] The upper ends of the two side walls of the oblique groove are straight side II and straight side III that form an angle with the transverse direction of the tire; the upper end of one side wall of the arc-shaped groove is straight side IV connected to straight side III and arc side II connected to straight side IV, straight side IV and arc side II are tangent to each other, and the upper end of the other side wall is straight side I connected to the end of straight side II and arc side I connected to the end of straight side I in sequence; straight side II forms an obtuse angle a with straight side I, and straight side IV forms an obtuse angle b with straight side III; obtuse angle a is an angle of the middle pattern block II, and the mutual circumference angle of obtuse angle b is an angle of the middle pattern block I; A circumferential reinforcement rib is provided in the middle of the transverse groove, and the transverse groove extends all the way to the connection between the shoulder and the sidewall; from the lateral center of the transverse groove to the shoulders on both sides, the distance between the two side walls of the transverse groove remains unchanged at first, then increases and then decreases, and the part where it starts to decrease starts from the edge of the crown; from the end of the circumferential reinforcement rib to the end of the corresponding transverse groove, the depth of the transverse groove increases first and then decreases.

[0016] A tire, wherein the tire pattern includes the tire pattern described above.

[0017] Compared with the prior art, the present invention provides a long-distance mining tire pattern and a tire, which reduces the risk of shoulder tread blocks falling off.

[0018] Avoid high heat generation in the pattern during long-distance operation, which may lead to early damage. Increase the applicability of the pattern to long-distance operation, optimize the ground contact pressure of the pattern block, and reduce stress concentration.

[0019] Provide a pattern that improves the tire's long-distance service life and has a higher mileage life. Increase the pattern rigidity, optimize the pattern, improve impact resistance, and enhance uniform wear, stability, and puncture resistance during driving.

[0020] In order to enable the tire to be used in long-distance, high-load, and relatively harsh roads while having a high mileage life, the large tread blocks are cut into multiple pieces, and the intercept increases while increasing the saturation, so as to achieve the purpose of fragmenting the tread blocks without losing rigidity; the ultimate optimization of ground contact smoothness is 10%, and this value can be as high as 200%, which disperses the ground contact pressure of the tread blocks, facilitates stress release, and reduces the possibility of block drop and tire blowout due to impact during driving; at the same time, in order to avoid cracking of the tread grooves, convex reinforcement ribs are designed between the tread blocks; the non-tangent design and cutting design are adopted to reduce the stress at the edges and corners of the tread blocks and reduce the risk of block drop on harsh roads; the comprehensive use of the above designs is conducive to improving the service life of wide-body dump truck tires in long-distance and harsh environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional diagram of the pattern of the present invention; Figure 2 It is a plan view of the pattern of the present invention; Figure 3 is a schematic diagram of the third convex reinforcement rib; Figure 4 It is a style change diagram; Figure 5 is the non-tangent pressure diagram; Figure 6 is the tangent pressure diagram; Figure 7 is the cutting profile; Figure 8is the non-cutting pressure diagram; Fig. 9 is the cutting pressure diagram; Fig.10 This is the pattern smoothness diagram; Fig.11 Schematic diagram of the non-tangent structure of the left side pattern block 2.

[0022] Among them, pattern block group 1, edge pattern block 2, middle pattern block I3, one middle pattern block II4, first reinforcing rib 5, second reinforcing rib 6, third reinforcing rib 7, third reinforcing rib I71, third reinforcing rib II72, third reinforcing rib III73, cutting block 8, first reduction block 81, second reduction block 82, transverse pattern groove 9, oblique groove 90, arc groove 91, arc edge I92, arc edge II93, straight edge IV94, straight edge I96, straight edge II97, straight edge III98, corner III95, corner IV99; midline surface 10, non-tangent 111, corner I11, corner II112, circumferential reinforcing rib 12; fourth reinforcing rib 13, corner I14. DETAILED DESCRIPTION

[0023] The present invention is described in detail below in conjunction with specific embodiments. It is necessary to point out that this embodiment is only used to further illustrate the present invention and cannot be understood as limiting the scope of protection of the present invention. Technical personnel skilled in the art can make some non-essential improvements and adjustments based on the above-mentioned contents of the present invention.

[0024] In the description of this application, the tire rolling direction is forward and the departing direction is backward.

[0025] like Figure 1-Figure 11 As shown, a long-distance mining tire pattern includes a crown pattern, the crown pattern includes a pattern block group 1 evenly distributed along the circumference of the tire on the crown, and a transverse pattern groove 9 is formed between adjacent pattern block groups 1; each pattern block group 1 includes side pattern blocks 2 on both sides and a middle pattern block between the side pattern blocks on both sides, and at least one middle pattern block is provided; the side pattern block 2 is at least one of the following three types: (i) The crown pattern is symmetrical in the center, and the front edge of the edge pattern block 2 on the right side of the crown pattern contacts the ground earlier than the corners of the same edge pattern block 2; when the edge pattern block 2 just contacts the ground, the front edge arc edge II93 contacts the ground first due to its corners, thus preventing the edge pattern block from being damaged or falling off; At the same time, in the plane view of the tire pattern, the corner Ⅰ11 of the rear edge Ⅰ of the edge pattern block 2 close to the middle pattern block is located behind the rear edge Ⅰ-arc edge Ⅰ92 of the edge pattern block 2, and at this time, the corner A formed by the intersection of the rear edge Ⅰ-arc edge Ⅰ92 of the edge pattern block 2 and the outermost part of the crown is located in front of the corner Ⅰ11, and the extension line of the rear edge Ⅱ extending in the direction of the rear edge Ⅰ-arc edge Ⅰ92 intersects with the rear edge Ⅰ, that is, the extension line of the rear edge Ⅱ intersects with the rear edge Ⅰ, and the intersection point is not tangent 111, and the corners are rounded at the intersection, and the corner Ⅰ11 is located in front of the extension line of the rear edge Ⅱ. Since the crown pattern is centrally symmetrical, when the corner Ⅰ11 of the edge pattern block 2 near the middle pattern block on the other side of the crown pattern, i.e. the left side of the crown pattern, is located in front of the front edge Ⅰ-arc edge Ⅰ92 of the edge pattern block 2, at this time, the corner A formed by the intersection of the front edge Ⅰ-arc edge Ⅰ92 of the edge pattern block 2 and the outermost part of the crown is located behind the corner Ⅰ11, and the extension line of the front edge Ⅱ in the direction of the front edge Ⅰ intersects with the front edge Ⅰ-arc edge Ⅰ92, that is, the extension line of the front edge Ⅱ intersects with the front edge Ⅰ-arc edge Ⅰ92, and the intersection point is not tangent 111, and the corners are rounded at the intersection point, and the corner Ⅰ11 is located behind the extension line of the front edge Ⅱ, as shown in FIG. Fig.11 As shown, the straight edge Ⅰ96 in the figure includes the front edge Ⅱ of the adjacent middle pattern block and its extension line, so the edge corner Ⅰ11 is located behind the straight edge Ⅰ96.

[0026] The edge of the crown is Figure 2 Middle dotted line CC.

[0027] This design reduces the impact of the edge pattern block 2 on the corner Ⅰ11 when the tire just touches the ground when rolling in the circumferential direction, avoiding the block from being damaged or falling off at this sensitive part. Under the same load and air pressure, only the non-tangent 111 and the corner Ⅰ11 are different in this model, reducing the interference of other factors. After simulation analysis and comparison, this design can reduce the pressure at the non-tangent part by 42.8%. Figure 5 , Figure 6 .

[0028] Therefore, when the entire tire is rolling, when the edge pattern block 2 just contacts the ground, it can avoid the edge pattern block being damaged or falling off.

[0029] Regarding "when the tire rolls, the edge of the edge pattern block 2 contacts the ground earlier than the edges and corners of the same edge pattern block 2", the specific structure can be: the edge of the edge pattern block 2 that forms the transverse pattern groove 9 has a convex portion in the direction away from the center of the edge pattern block 2 compared to the edges and corners of the edge pattern block 2 at both ends of this edge, and there is a point in the convex portion of the edge in front of the edge pattern block 2 that is located in front of the edges and corners of the edge pattern block 2 at both ends of the edge, or there is a point in the convex portion of the edge behind the edge pattern block 2 that is located behind the edges and corners of the edge pattern block 2 at both ends of the edge.

[0030] The front edge of the right side edge pattern block 2 contacts the ground earlier than the corners of the same edge pattern block 2: for the same pattern block group 1, the front edge of the edge pattern block 2 and the front edge of the adjacent middle pattern block are designed to be tangent when forming the transverse pattern groove, and the front edge of the edge pattern block 2 is located in front of the straight line formed by the corners at both ends of the front edge of the right side edge pattern block 2.

[0031] like Figure 2 In the same pattern block group 1, the front edge arc edge II93 of the right side pattern block 2 and the front edge of the adjacent middle pattern block are tangent when forming the transverse groove, and the arc edge II93 is located in front of the straight line formed by the corners of the two ends of the front edge of the right side pattern block 2 - corner III95 and corner B. Corner B is the arc edge II93 and the crown edge ( Figure 2 The rear edge of the right side pattern block 2 is the arc edge Ⅰ92, and the rear edge Ⅱ of the adjacent middle pattern block is a straight edge. The extension line of the straight edge rear edge Ⅱ to the arc edge Ⅰ92 intersects with the arc edge Ⅰ92, and the intersection point is not tangent 111. The corner Ⅰ11 is located in front of the extension line of the straight edge rear edge Ⅱ. Figure 2 In the figure, the straight edge Ⅰ96 includes the front edge Ⅱ of the adjacent middle pattern block and its extension line, so the edge corner Ⅰ11 is located in front of the straight edge Ⅰ96.

[0032] Due to the central symmetry, the rear edge of the left side pattern block 2 - arc edge II 93 and the rear edge of the adjacent middle pattern block are designed to be tangent when forming the transverse pattern groove. The front edge of the left side pattern block 2 is the arc edge I 92, and the front edge II of the adjacent middle pattern block is a straight edge. Fig.11 As shown, the front edge II of the straight edge is extended to the arc edge I 92 and intersects with the arc edge I 92, and the intersection point is not tangent 111. Figure 2 The middle straight edge Ⅰ96 includes the front edge Ⅱ of the adjacent middle pattern block and its extension line, so the corner Ⅰ11 is located behind the straight edge Ⅰ96.

[0033] Therefore, the edge of the side pattern block 2 formed with the tangent design of the transverse groove is the arc edge II 93. Compared with the straight line connecting the two ends of the arc edge II 93, the arc edge II 93 makes the side pattern block 2 convex, and the arc edge II 93 is located in front of the two edges of the right side edge pattern block 2, namely, the edge III 95 and the edge B; optimally, the center of the arc edge II 93 is located on the side where the crown pattern is located. Reduce the risk of crown explosion caused by the impact of the edge of the edge pattern block 2, that is, the shoulder edge, which first contacts the edge during the tire running.

[0034] The edge of the edge pattern block 2 is tangent when forming the transverse groove, and compared with the straight line connecting the two ends of the edge with the tangent design, the edge with the tangent design makes the edge pattern block convex, which helps to weaken the inflection point stress; through finite element simulation, the stress concentration point is cut to reduce the risk of edge block corner loss; the overall pattern is designed for ground contact smoothness, which is conducive to uniform tread wear and avoids uneven tread wear; the edge of the edge pattern block 2 with a tangent design for the transverse groove is an arc edge Ⅱ93, and compared with the straight line connecting the two ends of the arc edge Ⅱ93, the arc edge Ⅱ93 makes the edge pattern block 2 convex, and the arc edge Ⅱ93 is located in front of the edges at the two ends of the edge of the edge pattern block 2 - edge Ⅲ95 and edge B, which reduces the impact on the tire during the pattern driving process and avoids block loss and tire blowout.

[0035] The edge corner Ⅰ11 of the edge pattern block 2 is designed to be rounded. The advantage of the rounded edge corner 11 is to prevent the block from falling off.

[0036] In a plan view, the arc side I of the edge block 2 makes the edge block 2 concave compared to the straight line connecting the two ends of the arc side I 92 (the intersection A and the corner I 11 ).

[0037] The upper ends of the corners where stress is concentrated of the edge pattern block 2 and the middle pattern block adjacent to the edge pattern block 2 are cut to disperse the maximum stress here to both sides of the corners.

[0038] In the same pattern block group 1, the edge pattern block 2 is connected to the adjacent middle pattern block through the third reinforcing rib 7, and the third reinforcing rib at least includes the third reinforcing rib I71, the third reinforcing rib II72, and the third reinforcing rib III73, and the third reinforcing rib I71 is located between the third reinforcing rib II72 and the third reinforcing rib III73, and the thickness of the third reinforcing rib I71 is greater than the thickness of the third reinforcing rib II72 and the third reinforcing rib III73.

[0039] Preferably, the third reinforcing rib 7 is formed by connecting the third reinforcing rib II 72, the third reinforcing rib I 71, and the third reinforcing rib III 73 in sequence, and the thickness of the third reinforcing rib I 71 is greater than the thickness of the third reinforcing rib II 72 and the third reinforcing rib III 73, and the thickness of the third reinforcing rib II 72 and the third reinforcing rib III 73 are the same.

[0040] The purpose is to increase the rigidity between the edge pattern block 2 and the adjacent middle pattern block, reduce the risk of the edge pattern block 2 falling off, avoid the edge pattern block 2 and the adjacent middle pattern block being connected entirely by thickened reinforcing ribs, resulting in poor heat dissipation, and also avoid the edge pattern block 2 and the adjacent middle pattern block being connected entirely by thinned reinforcing ribs, resulting in weak pattern block rigidity and increased risk of falling off.

[0041] In the same pattern block group 1, the middle pattern blocks between the edge pattern blocks 2 on both sides include middle pattern blocks I3 and middle pattern blocks II4. The middle pattern block I3 is adjacent to the shoulder pattern block 2. Two middle pattern blocks II4 are arranged between the two middle pattern blocks I3. The outer periphery of one middle pattern block II4 is adjacent to two middle pattern blocks I3, one middle pattern block II4 and the transverse pattern groove 9 respectively. The two middle pattern blocks II4 are connected by a first reinforcing rib 5. The middle pattern block II4 is connected to one middle pattern block I3 by a second reinforcing rib 6 and is connected to another middle pattern block I3 by a fourth reinforcing rib 13.

[0042] In the same tread block group, the present application connects two middle tread blocks Ⅰ3, two middle tread blocks Ⅱ4, and two edge tread blocks 2 through reinforcing ribs, thereby realizing multiple cutting of the existing large tread blocks of the tread crown. The intercept is increased while the saturation is increased, so as to achieve the purpose of breaking the tread blocks without losing rigidity. At the same time, the grounding pressure of the tread blocks is dispersed, which is beneficial to stress release and reduces the possibility of block falling and tire blowout due to impact during driving.

[0043] The depth of the first reinforcing rib 5 is 1 / 5-1 / 3 of the depth of the transverse groove 9, the depth of the second reinforcing rib 6 is 2 / 5-3 / 5 of the depth of the transverse groove 9, and the depth of the fourth reinforcing rib 13 is 2 / 5-3 / 5 of the depth of the transverse groove 9; the depth of the third reinforcing rib I 71 is greater than the depth of the first reinforcing rib 5 and less than the depth of the second reinforcing rib 6, the depth of the third reinforcing rib II 72 is 2 / 3-4 / 5 of the depth of the transverse groove 9, and the depth of the third reinforcing rib II 72 is greater than the depth of the second reinforcing rib 6.

[0044] Here, the depth of the transverse groove 9 is the distance from the crown edge ( Figure 2 The depth of the transverse groove 9 at half the distance of the middle dashed line CC).

[0045] The second reinforcing rib 6 and the fourth reinforcing rib 13 have the same depth.

[0046] Aside from the changes in the angles of the transverse groove 9 and the rib groove wall, as the degree of wear increases, the area of ​​the pattern block group 1 also increases. The larger the block area and the smaller the groove area, the lower the risk of punctures in the groove, thus reducing the risk of punctures in the transverse groove 9. As the depth of the ribs on the pattern block group 1 gradually becomes shallower until all the ribs disappear, the ground contact area is 68%-85%. Before wear, the ground contact area was 68%-73%. As the depth of the ribs on the pattern block group 1 gradually becomes shallower until all the ribs disappear, the pattern style can present different styles for reference Figure 4 .

[0047] The area ratio between the edge pattern block 2 and the middle pattern block Ⅰ3 ranges from 105% to 120%, ensuring the rigidity of the shoulder contacting the ground and preventing the blocks from being damaged. By adjusting the proportion of the two and the pattern style, the purpose of the pattern blocks being broken and rigid is achieved, and the tire is evenly stressed, with high mileage and fast heat dissipation.

[0048] The transverse groove 9 includes an oblique groove 90 in the middle and arc-shaped grooves 91 on both sides respectively connected to the ends of the oblique groove 90 , and the transverse groove 9 is centrally symmetrical.

[0049] The upper ends of the two side walls of the oblique groove 90 are straight edge II 97 and straight edge III 98 that form an angle with the tire transverse direction; the upper end of one side wall of the arc groove 91 is straight edge IV 94 connected to straight edge III 98 and arc edge II 93 connected to straight edge IV 94, and the straight edge IV 94 and arc edge II 93 are tangent to each other, and the upper end of the other side wall is straight edge I 96 connected to the end of straight edge II 97 and arc edge I 92 connected to the end of straight edge I 96. Straight edge II 97 forms an obtuse angle a with straight edge I 96, and straight edge IV 94 forms an obtuse angle b with straight edge III 98. Obtuse angle a is an angle of the middle pattern block II 4, and the mutual circumference angle of obtuse angle b is an angle of the middle pattern block I 3.

[0050] The corners of the stress concentration points in the tread pattern are cut, and the maximum stress here is dispersed to both sides of the corners through cutting.

[0051] In the structure of the present application, the angle formed by the arc edge II93 of the edge pattern block 2 and the edge of the side close to the middle pattern block I3 is chamfered, and the chamfered angle is angle I14, and angle I14 is a stress concentration point. The upper end of angle I14 is cut to form a first reduction block 81, and the cutting angle α ranges from 15° to 45°. The cutting diagram is shown in FIG. Figure 7 As shown. The side edge of the transverse groove 9 formed by the middle pattern block Ⅰ3 and the middle pattern block Ⅱ4 is a straight line edge Ⅰ96. The two edges adjacent to the middle pattern block Ⅰ3 and the middle pattern block Ⅱ4 formed by the straight line edge Ⅰ96 are respectively the edge angle Ⅲ95 of the middle pattern block Ⅰ3 and the edge angle Ⅳ99 of the middle pattern block Ⅱ4. Along the driving direction of the tire, the edge angle Ⅲ95 is behind the edge angle Ⅳ99. The edge angle Ⅲ95 is a stress concentration point. There is a second reduction block 82 designed at the upper end of the edge angle Ⅲ95. The cutting angle α ranges from 15° to 45°. The cutting diagram is shown in FIG. Figure 7 As shown. The maximum stress here is dispersed to both sides of the corner by cutting. Through the design of the first cutting block 81 and the second cutting block 82, the pressure at the corner can be reduced by about 10.2% through simulation analysis, as shown in FIG. Figure 8 , Fig. 9 .

[0052] A circumferential reinforcement rib 12 is provided in the middle of the transverse groove 9, and the transverse groove 9 extends all the way to the connection between the shoulder and the sidewall. From the transverse center of the transverse groove 9 to the shoulders on both sides, the distance between the two side walls of the transverse groove 9 remains unchanged at first, then increases and then decreases, and the part that starts to decrease starts from the edge of the crown; from the end of the circumferential reinforcement rib 12 to the end of the corresponding transverse groove 9, the depth of the transverse groove 9 increases first and then decreases. Through the design of the width variation of the transverse groove, the tire is conducive to stone removal, water drainage, mud removal, heat dissipation, etc. while ensuring the climbing ability.

[0053] Along the running direction of the tire, the corner III 95 on the left or right side of the crown pattern is behind the corner IV 99, and a second reduction block 82 is designed on the upper end of the corner III 95. The crown pattern is centrally symmetrical.

[0054] (ii) when the tire is rolling, the edge of the edge pattern block 2 contacts the ground before the corners of the same edge pattern block 2; When the edge pattern block 2 just contacts the ground, the edge contacts the ground before the corners, which can prevent the corners of the edge pattern block from being damaged or falling off.

[0055] (III) In the plane view of the tire pattern, when the front edge I of the edge pattern block 2 is close to the corner I11 of the middle pattern block and is located in front of the front edge I of the edge pattern block 2, the intersection A of the front edge I of the edge pattern block 2 and the outermost part of the crown is located behind the corner I11, and the extension line of the front edge II in the direction of the front edge I intersects with the front edge I, and the intersection point is not tangent 111, and the corner is rounded at the intersection, and the corner I11 is located behind the extension line of the front edge II.

[0056] This design avoids or reduces the risk of the edge pattern block 2 being damaged or falling off when it hits the edge pattern block 111 when the tire rolls circumferentially.

[0057] According to solution (1), obviously solution (2) or (3) can also avoid or reduce the risk of edge pattern block 2 being damaged or falling off due to the impact of edge pattern block 2 when it just touches the ground when the tire rolls circumferentially.

[0058] The above description is only a preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto. It should be pointed out that for those skilled in the art and any technician familiar with the technical field, without departing from the overall concept of the present invention, the technical solution and the inventive concept of the present invention are equivalently replaced or changed, and several changes and improvements are made, which should also be regarded as the protection scope of the present invention.

Claims

1. A long-distance mining tire pattern, characterized by: The tire comprises a crown pattern, the crown pattern comprises a pattern block group (1) uniformly distributed along the circumference of the tire on the crown, and transverse pattern grooves (9) are formed between adjacent pattern block groups (1); each pattern block group (1) comprises side pattern blocks (2) on both sides and a middle pattern block between the side pattern blocks on both sides, and at least one middle pattern block is provided; the side pattern block (2) is at least one of the following three types: (i) When the tire is rolling, the edge of the edge pattern block (2) contacts the ground before the corners of the same edge pattern block (2); (ii) In a plan view of the tire pattern, when the front edge I of the edge pattern block (2) is close to the corner I (11) of the middle pattern block and is located in front of the front edge I of the edge pattern block (2), and at this time, the corner A formed by the intersection of the front edge I of the edge pattern block (2) and the outermost edge of the crown is located behind the corner I (11), the extension line of the front edge II intersects with the front edge I, and the intersection point is not tangent (111), and the corner is rounded at the intersection point, and the corner I (11) is located behind the extension line of the front edge II; (iii) the crown pattern is symmetrical in center, the front edge of the left or right side edge pattern block (2) contacts the ground earlier than the corner of the same side pattern block (2); when the side pattern block (2) just contacts the ground, the edge contacts the ground first due to the corner, thus preventing the corner of the side pattern block from being damaged and falling off; At the same time, in a plan view of the tire pattern, when the rear edge I of the edge pattern block (2) is close to the corner I (11) of the middle pattern block and is located behind the rear edge I of the edge pattern block (2), and at this time, the corner A formed by the intersection of the rear edge I of the edge pattern block (2) and the outermost edge of the crown is located in front of the corner I (11), the extension line of the rear edge II intersects with the rear edge I, and the intersection point is not tangent (111), and the corner is rounded at the intersection point, and the corner I (11) is located in front of the extension line of the rear edge II.

2. The long-distance mining tire pattern according to claim 1 is characterized in that: When the tire rolls, the edge of the edge pattern block (2) contacts the ground before the corners of the same edge pattern block (2): the edge of the edge pattern block (2) forming the transverse pattern groove (9) has a convex portion in a direction away from the center of the edge pattern block (2) compared to the corners of the edge pattern blocks (2) at both ends of the edge, and the convex portion of the edge in front of the edge pattern block (2) has a point located in front of the corners of the edge pattern block (2) at both ends of the edge, or the convex portion of the edge in front of the edge pattern block (2) has a point located behind the corners of the edge pattern block (2) at both ends of the edge.

3. The long-distance mining tire pattern according to claim 2 is characterized in that: The crown pattern is symmetrical in the center, and the front edge of the left or right side edge pattern block (2) contacts the ground earlier than the corners of the same side pattern block (2): for the same pattern block group (1), the front edge of the side pattern block (2) and the front edge of the adjacent middle pattern block are designed to be tangent when forming a transverse pattern groove, and the front edge of the side pattern block (2) is located in front of the straight line formed by the corners at both ends of the front edge of the right side edge pattern block (2).

4. The long-distance mining tire pattern according to claim 3 is characterized in that: For the same pattern block group (1), the front edge of the right side pattern block (2) and the front edge of the adjacent middle pattern block are designed to be tangent when forming a transverse pattern groove, and the front edge of the right side pattern block (2) is located in front of a straight line formed by the corners at both ends of the front edge of the right side pattern block (2); The rear edge of the right side edge pattern block (2) is an arc edge I (92), and the rear edge II of the adjacent middle pattern block is a straight edge. The extension line of the straight edge rear edge II to the arc edge I (92) intersects with the arc edge I (92), and the intersection point is not tangent (111); Since the crown pattern is centrally symmetrical, the square edge of the left side pattern block (2) and the rear edge of the adjacent middle pattern block are designed to be tangent when forming a transverse pattern groove; the front edge of the left side pattern block (2) is an arc edge I (92), and the front edge II of the adjacent middle pattern block is a straight edge; the extension line of the rear edge II of the straight edge to the arc edge I (92) intersects with the arc edge I (92), and the intersection point is not tangent (111); The edge of the edge pattern block (2) formed with a tangent design of the transverse pattern groove is an arc edge II (93). Compared with the straight line connecting the two ends of the arc edge II (93), the arc edge II (93) makes the edge pattern block (2) convex, and the arc edge II (93) is located in front of the edge corners III (95) and the edge corner B at the two ends of the front edge of the right side edge pattern block (2).

5. The long-distance mining tire pattern according to claim 4 is characterized in that: The corner Ⅰ (11) of the edge pattern block (2) is designed to be chamfered; The arc edge I of the edge pattern block (2) makes the edge pattern block (2) concave; The upper ends of the corners of the edge pattern blocks (2) and the middle pattern blocks adjacent to the edge pattern blocks (2) where stress is concentrated are cut.

6. The long-distance mining tire pattern according to claim 1 is characterized by: In the same pattern block group (1), the edge pattern block (2) is connected to the adjacent middle pattern block via a third reinforcing rib (7), the third reinforcing rib (7) at least comprising a third reinforcing rib I (71), a third reinforcing rib II (72), and a third reinforcing rib III (73), the third reinforcing rib I (71) being located between the third reinforcing rib II (72) and the third reinforcing rib III (73), and the thickness of the third reinforcing rib I (71) being greater than the thickness of the third reinforcing rib II (72) and the third reinforcing rib III (73); In the same pattern block group (1), the middle pattern block between the side pattern blocks (2) on both sides includes a middle pattern block I (3) and a middle pattern block II (4), the middle pattern block I (3) is adjacent to the shoulder pattern block (2), two middle pattern blocks II (4) are arranged between the two middle pattern blocks I (3), the outer periphery of one middle pattern block II (4) is adjacent to the two middle pattern blocks I (3), one middle pattern block II (4), and one transverse pattern groove (9), the two middle pattern blocks II (4) are connected by a first reinforcing rib (5), the middle pattern block II (4) is connected to one middle pattern block I (3) by a second reinforcing rib (6), and is connected to the other middle pattern block I (3) by a fourth reinforcing rib (13).

7. The long-distance mining tire pattern according to claim 6 is characterized in that: The depth of the first reinforcing rib (5) is 1 / 5-1 / 3 of the depth of the transverse groove (9), the depth of the second reinforcing rib (6) is 2 / 5-3 / 5 of the depth of the transverse groove (9), and the depth of the fourth reinforcing rib (13) is 2 / 5-3 / 5 of the depth of the transverse groove (9); the depth of the third reinforcing rib I (71) is greater than the depth of the first reinforcing rib (5) and less than the depth of the second reinforcing rib (6), the depth of the third reinforcing rib II (72) is 2 / 3-4 / 5 of the depth of the transverse groove (9), and the depth of the third reinforcing rib II (72) is greater than the depth of the second reinforcing rib (6); The transverse groove (9) comprises an oblique groove (90) in the middle and arcuate grooves (91) on both sides respectively connected to the ends of the oblique groove (90), and the transverse groove (9) is centrally symmetrical.

8. The long-distance mining tire pattern according to claim 7 is characterized in that: The second reinforcing rib (6) and the fourth reinforcing rib (13) have the same depth; The ratio of the area of ​​the edge pattern block (2) to the area of ​​the middle pattern block I (3) ranges from 105% to 120%.

9. The long-distance mining tire pattern according to claim 7 is characterized in that: The upper ends of the two side walls of the oblique groove (90) are straight side II (97) and straight side III (98) which form an angle with the transverse direction of the tire; the upper end of one side wall of the arc groove (91) is a straight side IV (94) connected to the straight side III (98) and an arc side II (93) connected to the straight side IV (94), the straight side IV (94) and the arc side II (93) being tangent to each other, and the upper end of the other side wall is a straight side I (96) connected to the end of the straight side II (97) and an arc side I (92) connected to the end of the straight side I (96) in sequence; the straight side II (97) and the straight side I (96) form an obtuse angle a, and the straight side IV (94) and the straight side III (98) form an obtuse angle b; the obtuse angle a is an angle of the middle pattern block II (4), and the mutual circumference angle of the obtuse angle b is an angle of the middle pattern block I (3); A circumferential reinforcing rib (12) is provided in the middle of the transverse groove (9), and the transverse groove (9) extends all the way to the connection between the shoulder and the sidewall; from the transverse center of the transverse groove (9) to the shoulders on both sides, the distance between the two side walls of the transverse groove (9) first remains unchanged, then increases and then decreases, and the portion where the decrease begins starts from the edge of the crown; from the end of the circumferential reinforcing rib (12) to the end of the corresponding transverse groove (9), the depth of the transverse groove (9) first increases and then decreases.

10. A tire, characterized in that: The tire pattern comprises the tire pattern described in any one of claims 1-9.

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