| 摘要 |
<p>The present specification discloses a wheel comprising a central hub (3) and an outer rim (5) interconnected by a web (7). A pair of annular braking discs (9) are mounted one on each side of the web (7), each annular braking disc (9) being secured to the web (7) by at least two attachment means (11). Each annular braking disc (9) comprises at least two curved segments (19,21), each curved segment having two end edge regions (24,22), each end edge region (24,22) of each segment (19,21) overlapping an end edge region (24,22) of an adjacent segment (19,21) so that a continuous annular braking disc (9) with a smooth braking surface (41) is provided. The overlapping end edge regions (24,22) have sections (27,45) which extend generally axially of the braking disc (9) in opposite directions, said sections (27,45) interengaging with each other, with spring means (55) being located between said overlapping end regions (24,22) to thus bias the said overlapping end regions (24,22) circumferentially with respect to the annular braking disc (9), to thus securely interengage the segments (19,21). <IMAGE> <IMAGE></p> |
