| 摘要 |
<p>The wheel comprises a rim (1) with a rolling surface (2) and a flange (3), a hub (4) and a disc (5) connected to the hub and rim. The disc section is constructed along the meridian line (AB) extending between the point (A), located at the junction of the disc connecting zone to the rim, and a point (B), located at the junction of the disc connection to the hub. The two points (A,B) are located either side the median plane (P) and are symmetrical to the point (I) of intersection of the meridian line and the plane, the point being an inflexion point of the curve AB. The distance to the plane P from the intersection J of the tangent TA to the curve AB at the point A and the limiting track J1J2 between the disc and the rim, is equal to the distance to the plane of the point of intersection M of the tangent TB to the curve AB at the point B and the limiting track M1M2 between the disc and the rim. the tangents TA and TB to the curve AB at the points A and B are parallel to the plane P.</p> |
