| 摘要 |
PURPOSE:To prevent dangerous speed in the ordinary using range by fitting a bearing holding member to a casing through an elastic member whose rigidity is lowered in the rectangular direction with respect to a rotary shaft and inserting a damper cylinder between the outer periphery and the casing. CONSTITUTION:A roller bearing 3 is held by clamping a bearing housing 24 and a bearing holding member 25 with bolts, and this assembly is fitted at a position of the bearing holding member 25 to a support bolt fitting flange 27 through a few support bolts 28, the support bolt fitting flange 27 being clamped to the casing 8 by bolts, thereby lowering uniformly support rigidity in the horizontal direction. Between a cylindrical part 105 at the outer peripheral part of the bearing holding member 25, the damper cylinder 26, and the casing 8, fine annular gaps 106 and 107 are formed. By filling these gaps with oil, a uniform damping coefficient in the horizontal direction can be obtained. |
