| 摘要 |
PURPOSE:To improve oil film pressure borne by a segment and largely prolong the life of a bearing by setting a place for installing a segment positioned at the lowermost part within a definite range. CONSTITUTION:When an interval between a rotary shaft 1 in a stationary state and segment 2 positioned at the lowermost part and also an interval between said rotary shaft 1 not in rotary motion and other segment 3, 7 adjacent to the segment 2 positioned at the lowermost part are defined as L1 and L2 respectively, the segment 2 positioned at the lowermost part is so installed as to satisfy the relation 2>=L1/L2>=1.25 between the intervals L1 and L2. Thus, oil film pressure P2 borne by a segment 2a is about same as oil film pressure P3, P7 borne by other adjacent sections 3a, 7a respectively. The oil film pressures borne by those segments are not only equalized but also reduced in its peak value in comparison with that of the conventional structure. As a result, the total bearing capacity is increased. |
