CN-122008736-A - Anti-eccentric tire shoulder ditch

CN122008736ACN 122008736 ACN122008736 ACN 122008736ACN-122008736-A

Abstract

The invention relates to the technical field of tire pattern design, in particular to an anti-eccentric wear tire shoulder ditch, which comprises a funnel-shaped shoulder ditch and a plurality of inner convex blocks which are equidistantly distributed in the funnel-shaped shoulder ditch. The invention improves the lateral supporting force of the groove wall through the multistage wall surface arrangement of the funnel-shaped shoulder ditch, and arranges the inner convex blocks in the funnel-shaped shoulder ditch at equal intervals, effectively resists the lateral deformation of shoulder ditch, enhances the stability of shoulder ditch, thereby preventing the rapid abrasion of two sides or one side of shoulder ditch, simultaneously, the inner convex blocks are provided with the water drop-shaped central opening at the bottom, when the tire is extruded by larger lateral force, the two sides of the middle section opening of the inner convex blocks are firstly contacted and form a support, thereby avoiding the damage to the tire body caused by the shearing force formed by the excessive extrusion of the bottom of shoulder ditch, and the inner convex blocks and the funnel-shaped shoulder ditch which are designed in a structural mode jointly form a shoulder ditch structure which has stable support and can resist the extrusion of the lateral force, thereby improving the eccentric abrasion phenomenon of the truck guide wheel position tire.

Inventors

WANG XUE
JU HAO
HUANG XIAOPENG
LI XIAOLIN
REN SHIDUO
Li Chongbing

Assignees

浦林成山（山东）轮胎有限公司

Dates

Publication Date: 20260512
Application Date: 20260303

Claims (10)

1. An anti-bias tire shoulder ditch comprising a funnel shoulder ditch and a plurality of inner bumps, each of said inner bumps being equally spaced within said funnel shoulder ditch; The inner protruding block is provided with a central opening along the circumferential direction of the funnel-shaped shoulder ditch, the bottom section of the central opening is in a drop shape, and the lowest point of the bottom of the central opening is flush with the lowest point of the bottom of the funnel-shaped shoulder ditch.
2. The anti-bias tire shoulder ditch as in claim 1, wherein the funnel shoulder ditch is funnel shaped in cross-section and the bottom of the funnel shoulder ditch is provided with a semi-circular arcuate bottom surface.
3. The anti-bias wear tire shoulder ditch as in claim 2, wherein the funnel shoulder ditch is symmetrically disposed on both sides, the groove wall on either side of the funnel shoulder ditch includes a first wall, a second wall, and a third wall, the first wall is adjacent to one side of the tread, the third wall is connected to the arcuate bottom surface, and the third wall is perpendicular to the plane of the tread, and the second wall is disposed between the first wall and the third wall.
4. The anti-bias tire shoulder ditch according to claim 3, wherein the first wall is an inclined or vertical wall, the second wall is an inclined wall, and the inclination of the first wall is higher than the inclination of the second wall.
5. The anti-bias tire shoulder ditch according to claim 2, wherein the funnel shoulder ditch has a groove depth H of 6-26mm, a groove width L of 5-20mm, and a radius R3 of the arcuate bottom surface of the bottom of the funnel shoulder ditch of 1.5-5mm.
6. The anti-bias tire shoulder ditch as in claim 1, wherein the highest point of the inner bump is flush with the edge of the funnel shoulder ditch and the tread.
7. The anti-bias tire shoulder ditch as in claim 1, wherein the central opening is sequentially configured from the tread toward the bottom of the funnel shoulder ditch as an upper section opening, a middle section opening, and a lower section opening; The upper section opening section is of an inverted trapezoid, the middle section opening section is of a rectangle, and the lower section opening section is of a drop shape.
8. The anti-bias tire shoulder ditch as in claim 7, wherein the widest portion of the upper section opening cross section is equal to the channel width of the funnel shoulder ditch and the narrowest portion of the upper section opening cross section is 1-3mm.
9. The anti-bias wear tire shoulder ditch as in claim 8, wherein the arc radius of the drop-shaped bottom of the lower opening section is 1-3mm, and the arc radius R1 of the connecting chamfer between the drop-shaped upper portion of the lower opening section and the middle opening section rectangle is 3-20mm.
10. The anti-bias tire shoulder ditch as in claim 1, wherein the central opening divides the inner lug into two symmetrical blocks that are trapezoidal or rectangular in plan view of the tread.

Description

Anti-eccentric tire shoulder ditch Technical Field The invention relates to the technical field of tire pattern design, in particular to an anti-bias wear tire shoulder ditch. Background The radial tire of the truck adopts radial arrangement steel wires and is matched with a plurality of steel wire belt layers, so that a firm radial structure is formed, the steel wire structure can bear larger load, the ground of the tire tread is more uniform and is not easy to deform, meanwhile, the running stability is good, the rolling resistance is small, the oil consumption can be reduced, the truck radial tire is wear-resistant and puncture-resistant, and the service life is long, and the radial tire is mainly applied to guide wheels, driving wheels and trailer wheels of medium and heavy trucks, but the radial tire of the truck often has the disease symptoms of abnormal abrasion of the shoulder pattern grooves in the actual use process, so that the tire is eccentrically worn, and the service life is reduced. The invention patent of China patent publication No. CN120840293A discloses an anti-bias wear pattern block and a tire comprising the same, wherein the anti-bias wear pattern block is divided into two quadrangles and two pentagons, and the pentagons and the quadrangles are crossed and distributed, so that the transverse stress intensity of a tread is improved, and the bias wear problem is improved, the tread pattern is generally adopted in the prior art, but the shoulder river channel abnormal wear problem usually occurs due to insufficient lateral force provided by shoulder ditch during tire steering, deflection occurs, and shoulder ditch stability is insufficient, so that the two sides or one side of a groove are rapidly worn, and therefore, the effect of coping with the tire bias wear problem is poor only through tire tread reinforcement, and particularly, the bias wear problem occurs to a guide wheel tire of a truck is more serious. Disclosure of Invention Therefore, the invention provides an anti-bias wear tire shoulder ditch, which is used for solving the problem that the bias wear of the guide wheel position tire of the truck is easy to occur in the prior art. To achieve the above object, the present invention provides a tire shoulder ditch for preventing eccentric wear, which includes a funnel shoulder ditch and a plurality of inner bumps, wherein each inner bump is equidistantly distributed in the funnel shoulder ditch; The inner protruding block is provided with a central opening along the circumferential direction of the funnel-shaped shoulder ditch, the bottom section of the central opening is in a water drop shape, and the lowest point of the bottom of the central opening is flush with the lowest point of the bottom of the funnel-shaped shoulder ditch. Further, the cross-sectional shape of the funnel shoulder ditch is funnel-shaped, and the bottom of the funnel shoulder ditch is provided with a semicircular arc bottom surface. Further, the two sides of the funnel-shaped shoulder ditch are symmetrically arranged, the groove wall on any side of the funnel-shaped shoulder ditch comprises a first wall surface, a second wall surface and a third wall surface, the first wall surface is close to one side of the tread, the third wall surface is connected with the arc-shaped bottom surface, the third wall surface is perpendicular to the plane where the tread is located, and the second wall surface is arranged between the first wall surface and the third wall surface. Further, the first wall surface is an inclined or vertical wall surface, the second wall surface is an inclined wall surface, and the inclination slope of the first wall surface is higher than that of the second wall surface. Further, the groove depth H of the funnel-shape shoulder ditch is 6-26mm, the groove width L is 5-20mm, and the radius R3 of the arc-shaped bottom surface of the bottom of the funnel-shape shoulder ditch is 1.5-5mm. Further, the highest point of the inner bump is flush with the edge of the funnel-shape shoulder ditch and the tread; further, the central opening is sequentially provided with an upper section opening, a middle section opening and a lower section opening which are connected from the tread to the bottom direction of the funnel-shaped shoulder ditch; the upper section opening section is of an inverted trapezoid, the middle section opening section is of a rectangle, and the lower section opening section is of a drop shape. Further, the width of the widest part of the upper section opening section is equal to the width of the groove of the funnel-shaped shoulder ditch, and the width of the narrowest part of the upper section opening section is equal to the rectangular width of the middle section opening section. Further, the arc radius of the water drop-shaped bottom of the lower section opening section is 1-3mm, the rectangular width of the middle section opening section is 1-3mm, and the arc radius R1 of the connec