| 摘要 |
<p>A safety wheel (1) includes several hubs (11) and several tires (12). Two or three tires are provided on the wheel, each of which is charged independently. In normal times, all tires of each wheel bear a load together, and rotate synchronously. When tire burst happens by accident, the wheel with two tires can still run as usual by means of the rest tire, thus improving safety.</p> |
