Meridianal bias tire with low flatness ratio

Abstract

The invention discloses a meridianal bias tire with low flatness ratio. The meridianal bias tire mainly comprises tread rubber, sidewall rubber, a tire bead, an air-tight layer, bead filler, tire body layers, a belt ply and a cap ply, wherein the laying direction of cord threads of the two tire body layers in a tread rubber area is along a meridian direction, and a tire body structure is a double-layer parallel stacked structure; compared with the bias tire, the high-speed performance of the tire is improved, the tire is easy to realize low flatness ratio, and the control stability of the tire is improved; the laying direction of the cord threads of the two tire body layers in a sidewall rubber area forms an included angle with the meridian direction, and the included angles of two tire body layers are equal in size and opposite in direction; the tire body structure is a reticular double-layer intersected stacked structure; as the tire body structure in the sidewall rubber area is a reticular intersected structure, the rigidity of the sidewall rubber is enhanced, the sidewall rubber is difficult to damage, the steering and braking performances and other performances of the meridianal bias tire are improved, the footprint area of the tire is reduced, the tire footprint shape is rationalized and the tire rolling resistance is reduced.

Description

technical field [0001] The invention relates to the technical field of tire structure design, in particular to a tire structure suitable for low aspect ratio and a design method. Background technique [0002] Nowadays, safety, energy saving, and environmental protection have become the main theme of the future development of the tire industry, and tires are gradually moving toward radialization. Although the bias tire is a tire with a traditional structure, it has been used for a long time, it is used in a wide range, and its production technology has a certain foundation, but its development is affected due to its unreasonable structure. At present, the tire structure in the tire industry is mainly divided into two types: radial tire and bias tire. line), while the carcass layer of the bias tire is composed of multiple layers of plies laid symmetrically across; (2) radial tires have multiple layers of plies that are attached between the tread rubber and the carcass along t...

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Problems solved by technology

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: a radial bias tire suitable for low flatness, mainly including tread rubber, sidewall rubber, bead, airtight layer, apex rubber, carcass layer, The belt layer and the cap layer, the tread rubber is located at the radially outermost layer of the tire; the sidewall rubber is located under the two sides of the tread rubber, and is tightly connected with both ends of the tread rubber; the bead is located on the sidewall Below the rubber, the airtight layer is located at the radially innermost layer of the tire, the apex is located inside the bead, the carcass layer is located outside the airtight layer, the belt layer is located above the carcass layer, and the belt layer The material is steel wire material, the cap ply is located above the outermost belt ply, the material of the cap ply is nylon material, the cords of the two carcass layers are located in the tread rubber area, and the laying direction is along the meridian direction, the carcass structure It is a double-layer stacked structure parallel to each other, so compared with bias tires, it improves the high-speed performance of the tires, makes it easier for the tires to achieve low flatness, thereby improving the handling stability of the tires, and solves the problem of bias tires in driving speed and continuous driving. The insurmountable problem of these two aspects of mileage

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