| 摘要 |
1,151,657. Viscous dampers; bearings. LORD CORP. 1 May, 1967 [28 June, 1966], No. 19967/67. Headings F2A and F2S. A viscous damper, for shaft bearings and which reduces shaft whip, comprises inner and outer members 1, 2 respectively fixed, e.g. to a housing 3 carrying a bearing 4 for a shaft 5 and having mounting brackets 6 for attachment to a supporting structure, not shown, and each having a radially-facing cylindrical surface 20,11 and axially. presented surfaces 19, 12 at opposite ends of its cylindrical surface, annular elements 21 of elastomer being bonded to each pair of opposed axially-presented surfaces 19, 12 to sustain relative radial motion of the latter surfaces in shear and the annular elements 21 and cylindrical and axiallypresented surfaces 20, 11 and 19, 12 defining a closed annular chamber which is filled with a viscous liquid, e.g. through filler ports 23. The outer member 2 consists of two identical rings 7 which are fastened together, with the interposition of an O-ring 9, by bolts 8, the inner member being formed by a cylindrical ring 13 joined at its sides to cylindrical rings 17 each having an outwardly projecting flange 18 which carries one of the axially-facing surfaces 19. A ring 15 is accommodated in a recess 16 in the cylindrical surface 11 of the outer member 2, an annular body 14 of elastomer 14 being bonded to the rings 15, 13 to divide the annular damping chamber into two compartments. The damping force is stated to be linear with respect to shaft speed, Fig. 3, not shown. |
