| 摘要 |
PURPOSE:To train mounting and dismounting of a tyre chain by means of an unfixed tyre model and a chain model. CONSTITUTION:A wheel model is not touching the ground and capable of being removed from an axle 5. A chain model a-a' is secured to a tyre at its upper face 1-1'. The both ends (b')-(c') are joined at the inner side of the tyre and the chain is spread over the entire circumference of the tyre from the inner side and finally, other ends (b)-(c) are joined at the outer lower end 3 thereof to complete the mounting. The mounting technique of the tyre chain may be acquired by repeated training with those models. |
