Heavy-load tire

Abstract

The invention relates to a heavy-load tire which comprises a tread, and a ground contact part of the tread comprises a central ground contact part and tire shoulder ground contact parts arranged on the two sides of the central ground contact part; the tread is further provided with a first main groove, a second main groove and pattern grooves, the first main groove and the second main groove are formed in the circumferential direction, the pattern grooves are formed in the axial direction, the first main groove is provided with continuous bends, and the bending angles range from 110 degrees to150 degrees; the first main grooves, the second main grooves and the pattern grooves can define a plurality of central pattern blocks at the central ground contact part, and the included angle between each first main groove and the corresponding pattern groove is 110-150 degrees; the second main grooves and the pattern grooves can define a plurality of tire shoulder pattern blocks at the tire shoulder ground contact part; and the total area of the central pattern blocks and the total area of the tire shoulder pattern blocks respectively account for 40%-50% of the total area of the ground contact part. The heavy-load tire has high braking force, load resistance and cutting resistance under heavy load, and the service life of the heavy-load tire is prolonged.

Description

technical field [0001] The invention relates to the technical field of tires, in particular to a heavy-duty tire. Background technique [0002] Domestic infrastructure investment has been increasing year by year, and commercial vehicle sales have maintained a steady growth. Due to the start of a large number of railway, highway, oil pipeline and other projects in the provinces along the line, the sales of heavy trucks have achieved a 60% increase in 2017. It is expected that dump trucks will become the main force in the heavy truck market in the next few years. major growth markets. [0003] However, because the dump truck transportation market is short-distance, high-heavy, and low-speed transportation, the main transportation carriers are ore (80%), mineral powder (20%), coal, etc. In the mining area, the vehicle speed is relatively low, generally about 20km / h There are many gravels, which are easy to cut the tires, which will cause the tread to fall off and reduce the se...

AI Technical Summary

Problems solved by technology

[0003] However, because the dump truck transportation market is short-distance, high-heavy, and low-speed transportation, the main transportation carriers are ore (80%), mineral powder (20%), coal, etc. In the mining area, the vehicle speed is relatively low, generally about 20km / h There are many gravels, and the tires are easy to be cut, which will cause the tread to fall off and reduce the service life of the tires. Outside the mining area, the surrounding area is dominated by mixed roads, and the speed of the vehicle is generally 30-50km / h

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