solid tire

Abstract

PROBLEM TO BE SOLVED: To provide a solid tire with reduced vibration during running and with high heat radiation effect. SOLUTION: In the solid tire 1, a plurality of S-shaped holes 2 opening into a side wall and extending in a width direction are circumferentially arranged at equal intervals. The S-shaped hole has two S-shaped border lines 21a, 21b almost radially extending in sectional form orthogonal to a rotation axis C and circumferentially opposing to each other. In the two border lines, curved lines 22a, 22b on their radial outer sides are protruded toward the same one side in a circumferential direction, and both inner sigmoid factor Ai÷Bi×100 and outer sigmoid factor Ao÷Bo×100 which are indexes indicating the degree of curvature of the entire of the S-shaped holes are at least 20 and not more than 140.

Description

technical field [0001] The invention relates to solid tires used in industrial vehicles such as forklifts and cranes. Background technique [0002] For example, forklifts are often used for carrying in, carrying out, and arranging materials and products loaded on pallets in warehouses, and nails falling off wooden pallets, fragments of metal parts, etc. are often scattered in such places. Therefore, the pneumatic tires used in passenger cars cannot be used on forklifts due to the possibility of tire blowout, but solid tires (non-pneumatic tires) formed of solid rubber are used. [0003] However, compared with pneumatic tires, the vibration felt by the driver during driving is larger in solid tires. In order to reduce this vibration, the following techniques have been proposed: providing holes penetrating between the sides, or providing bottomed tires that open to one side. Vibration is absorbed by the deformation of the rubber through the holes (Patent Documents 1 and 2). ...

AI Technical Summary

Problems solved by technology

That is, when the solid tires described in Patent Documents 1 and 2 climb over a step, the degree of deformation of the solid tire repeatedly appears in two states with large differences.

[0008] When the vehicle equipped with solid tires is often driven on uneven roads, and the solid tires repeatedly appear in two states with large differences in deformation, it is possible to cause unpleasant vibrations to the driving vehicle.

[0009] In addition, since the shape of the hole of the solid tire proposed in Patent Documents 1 and 2 has a relatively small circumference compared to the cross-sectional area, there is a possibility that sufficient heat dissipation (of the hole) for coping with heat generated during running cannot be ensured. The problem of side area, which accelerates the deterioration of solid tires

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