CN-121989594-A - Special uniform stable pattern structure for tubeless tire of high-load dump truck

CN121989594ACN 121989594 ACN121989594 ACN 121989594ACN-121989594-A

Abstract

The invention relates to a uniform stable pattern structure special for a tubeless tire of a high-load dump truck, belonging to the field of tire design. The foundation blocks H are distributed along the circumferential direction of the tread, are symmetrically arranged at the center and are staggered, and equally divide the circumferential direction n of the pattern; the foundation block H is internally bent and provided with a block A, a block B and a block C with the block height U, the areas of the block A, the block B and the block C are designed according to a certain proportion, the block A, the block B are pentagonal, the block C is hexagonal, the block A, the block B and the block C are connected through reinforcing ribs, the overall block angle alpha is designed according to the overall stress direction of the tire, the alpha value is related to the left and right foundation block misplacement difference level T and the tread width W, and the alpha = 90-T/W x 180 degrees, and the transverse groove bottom is provided with a concave stone discharging structure. The tire disclosed by the invention keeps better torsion resistance under the high-bearing working condition, has higher performances of resisting abnormal abrasion, preventing stone clamping and resisting chipping, and prolongs the service life of the tire.

Inventors

ZHOU PENGCHENG
SUN BAOYU
SUN JIAJIA
NIE BENLIANG
WANG XIAODONG
Guo Niangui
YU HAITAO
LIU QIXUAN

Assignees

三角轮胎股份有限公司

Dates

Publication Date: 20260508
Application Date: 20260128

Claims (6)

1. A special uniform stable pattern structure for a high-bearing dumper tubeless tire comprises a tread and tire shoulders and is characterized in that foundation blocks H which are arranged in a staggered mode and are symmetrical in center are distributed along the circumferential direction of the tread, the foundation blocks H divide the circumferential direction n of a pattern equally, the number n of the foundation blocks H which are equally divided is 30-50, the height U of each pattern block is 18-23mm, pattern blocks A, pattern blocks B and pattern blocks C with the pattern block heights U are arranged in the foundation blocks H in a bending mode, the areas of the pattern blocks A, the pattern blocks B and the pattern blocks C are designed according to a certain proportion, the pattern blocks A and the pattern blocks B are pentagons, the pattern blocks C are hexagonal, the pattern blocks A, the pattern blocks B and the pattern blocks C are connected through reinforcing ribs, the integral angle alpha of each pattern block is designed according to the integral stress direction of the tire, the alpha value is related to the misplacement level T of the left and right foundation blocks and the tread width W, and the alpha = 90-T/W is 180 degrees, and a concave stone-discharging structure is arranged at the bottom of a transverse pattern groove.
2. The uniform stable pattern structure special for the tubeless tire of the high-load-bearing dumper according to claim 1 is characterized in that the average speed of a vehicle is 30-55 km/h, the value of n is 30-40, the U value is 20-23 mm, the average speed of the vehicle is 55-80 km/h, the value of n is 40-50, and the U value is 18-20 mm.
3. The uniform stable pattern structure special for the tubeless tire of the high-load-bearing dumper according to claim 1, wherein the areas of the pattern block A, the pattern block B and the pattern block C are designed according to a certain proportion, the area ratio of the pattern block A to the pattern block B is 0.91-0.94, and the area ratio of the pattern block A to the pattern block C is 0.85-0.90.
4. The special uniform stable pattern structure for the tubeless tire of the high-load-bearing dumper is characterized in that the pattern block A is designed in a mode that an included angle between a pattern edge A1A5 and a pattern edge A1A2 is 100-110 degrees, an included angle between a pattern edge A2A3 and a pattern edge A1A2 is 76-86 degrees, an included angle between a pattern edge A4A5 and a pattern edge A1A5 is 150-156 degrees, an included angle between a pattern edge A2A3 and a pattern edge A3A4 is 106-112 degrees, the vertical distance a between the end point A5 of the pattern edge A1A5 and the pattern edge A1A2 is 0.10-0.12 times of tread width W, the vertical distance b between the end point A3 of the pattern edge A2A3 and the pattern edge A1A2 is 0.12-0.14 times of W, and the vertical distance c between the end point A4 of the pattern edge A4 and the pattern edge A1A2 is 0.15-0.19 times of W; The pattern block B is designed in a mode that pattern edges B1B2 of the pattern block B are obtained by transversely shifting pattern edges A3A4 of the pattern block A, the distance W1 between two pattern edges is 4-6mm, pattern edges B1B5 of the pattern block B and pattern edges A4A5 of the pattern block A are identical, the vertical distance e between the end points B5 of the pattern edges B1B5 and the pattern edges A1A2 of the pattern block A is 0.27-0.31 times of W, the included angle between the pattern edges B1B5 and the pattern edges B4B5 is 88-93 degrees, the vertical distance g between the end points B4 of the pattern edges B4B5 and the pattern edges A1A2 of the pattern block A is 0.33-0.38 times of W, the included angle between the pattern edges B1B2 and the pattern edges B2B3 of the pattern edges B1B2 is 98-102 degrees, and the vertical distance d between the end points B2 of the pattern edges B1B2 and the pattern edges A1A2 of the pattern block A is 0.14-0.18 times of W; the pattern block C is designed in a mode that the distance L2 between the end point C4 of the pattern block C and the upper edge of the base block H is 15-20 mm, the distance H between the end point C4 of the pattern block C and the center line is 8-12 mm, the included angle between the pattern edge C4C5 and the horizontal line is 25-30 degrees, the included angle between the pattern edge C3C4 and the center line is 40-45 degrees, the vertical distance k between the end point C5 of the pattern edge C4C5 and the pattern edge A1A2 of the pattern block A is 0.88-0.92 times W, the vertical distance n between the end point C3 of the pattern edge C3C4 and the pattern edge A1A2 of the pattern block A is 0.90-0.95 times W, the included angle between the pattern edge C5C6 and the pattern edge C4C5 is 98-102 degrees, the included angle between the end point C6 of the pattern edge C2C3 and the pattern edge C3C4 is 98-102 degrees, the vertical distance i between the end point C6 of the pattern edge C1A 2 of the pattern block A and the pattern edge A is 0.75-0.80 times W, and the obtained distance n between the pattern edge C3C4 and the pattern edge B of the pattern edge C2 of the pattern block A is 5-5.5 m is 5-5 times the pattern edge B.
5. The uniform stable pattern structure special for the tubeless tire of the high-load-bearing dumper according to claim 1, wherein the height R of one side of the pattern from the bottom of the groove is 0.2-0.35 times of the height U of the pattern block, the length S is 4-5 mm, the included angle gamma between the stone discharging wall and the central line is the same as the included angle between the stone discharging wall and the wall of the pattern groove, and the included angle between the stone discharging wall and the central line is 13-18 degrees.
6. The uniform stable pattern structure special for the tubeless tire of the high-load-bearing dumper according to claim 1, wherein the height Q of the reinforcing ribs is 0.4-0.5 times of the height U of the pattern blocks, the included angle between the groove wall and the center is 14-16 degrees, and the groove bottom adopts a full-arc design.

Description

Special uniform stable pattern structure for tubeless tire of high-load dump truck Technical Field The invention relates to the technical field of tire design, in particular to a uniform stable pattern structure special for a tubeless tire of a high-load dump truck. Background As is well known, with further upgrades of tire manufacturing processes and market vehicle types, high-load dump trucks that traditionally use tubeless products are beginning to use tubeless products. Compared with the tubeless tyre, the tubeless tyre has the advantages of 1 safety that the tubeless tyre adopts high air tightness sizing material, improves self-sealing capability on a break, ensures that the tyre cannot be instantaneously deflated and burst, ensures running safety, 2 long service life, that is, the rim diameter of the tubeless tyre is large from a brake drum, meanwhile, the inner tube and a rim strip are omitted, the heat generation of the tyre is low, the heat dissipation is quick, the service life of the tyre is longer, and 3 economical efficiency, that is, the tubeless tyre has better retreadability, and the dismounting time is saved. The tubeless radial tire of the truck tends to further develop, and the tubeless product of the market is more and more high in proportion. At present, the tubeless tire of the high-load dump truck has the following technical problems that (1) the pattern blocks bear larger driving force due to the difference of the rim forms, so that the tire frequently breaks off and falls off, (2) the pattern block proportion configuration and the pattern overall angle design are unreasonable, the tire is easy to wear and mileage deficiency caused by malformation abrasion (generally, pattern uniformity is insufficient), and the service life of the tire cannot be expected by a user, and (3) 30-40% of non-paved road surfaces exist in the working environment of the dump truck, more road surface broken stones exist, and the tire can be damaged early due to the puncturing of a crown caused by pattern groove stone. Disclosure of Invention In order to overcome the defects of the prior art, the invention provides a uniform stable pattern structure special for a tubeless tire of a high-load-bearing dumper, which solves the problems of short service life caused by rapid abrasion of an 'entering end' and a 'leaving end' which are easy to occur in block patterns of the special pattern of the high-load-bearing dumper, and puncturing of a crown by stones and stones. The invention solves the technical problems of the uniform stable pattern structure special for the tubeless tire of the high-bearing dumper, which comprises a tread and tire shoulders and is characterized in that foundation blocks H which are symmetrically distributed along the circumferential direction of the tread and arranged in a staggered mode are arranged in a staggered mode, pattern circumferential directions n are equally divided by the foundation blocks H, pattern blocks A, pattern blocks B and pattern blocks C with the pattern block heights U are arranged in the foundation blocks H in a bending mode, the pattern blocks A, the pattern blocks B and the pattern blocks C are designed according to a certain proportion, the pattern blocks A and the pattern blocks B are pentagons, the pattern blocks C are hexagons, the pattern blocks A, the pattern blocks B and the pattern blocks C are connected through reinforcing ribs, the overall angle alpha of the pattern blocks is designed according to the overall stress direction of the tire, alpha values are related to the offset difference T of left and right foundation blocks and the tread width W, and the alpha = 90-T/W x 180 degrees, and the concave stone discharging structure is arranged at the bottom of a transverse pattern groove. The basic block H equally divides the pattern circumference n, the equally divided number n is 30-50, and the pattern block height U is 18-23mm. The average speed of the vehicle is 30-55 km/h, the value of n is 30-40, the value of U is 20-23 mm, the average speed of the vehicle is 55 (including 55) to 80km/h, the value of n is 40 (including 40) to 50, and the value of U is 18-20 mm. The areas of the pattern block A, the pattern block B and the pattern block C are designed according to a certain proportion, the area ratio of the pattern block A to the pattern block B is 0.91-0.94, and the area ratio of the pattern block A to the pattern block C is 0.85-0.90. The pattern block A is designed in a mode that an included angle between a pattern edge A1A5 and a pattern edge A1A2 is 100-110 degrees, an included angle between a pattern edge A2A3 and a pattern edge A1A2 is 76-86 degrees, an included angle between a pattern edge A4A5 and a pattern edge A1A5 is 150-156 degrees, an included angle between a pattern edge A2A3 and a pattern edge A3A4 is 106-112 degrees, a vertical distance a between an end point A5 of the pattern edge A1A5 and the pattern edge A1A2 is 0.10-0.12 times of a