| 摘要 |
A large-dimension pivot bearing arrangement with rolling elements (4, 5) between a first annular bearing component (1) and a second annular bearing component (2) rotatable relative thereto about a bearing axis (3). The bearing components (1, 2) are connectable respectively to a first or second structural component of a large-scale apparatus, for example the upper and lower carriages of mobile cranes, excavators, turret cranes, cargo cranes, concrete mixing vehicles or other large-scale apparatus with high axial loads and load moments perpendicular to the bearing axis. Circularly circumferential running surfaces (6a, b; 7a, b), which in each case form running surface pairs, are provided respectively on the two bearing components (1, 2) for at least two rows of rolling elements (4, 5), by means of which compressive and tensile forces directed parallel to the bearing axis (3) may be transmitted. Circularly circumferential bearing surfaces (15a, b) can be provided respectively on the two bearing components (1, 2) for the transmission of radial forces. One (1) of the two bearing components (1, 2) is of divided construction and the two bearing components (1, 2) are each provided with a plurality of through-holes (10, 11) for fastening screws distributed circularly and extending parallel to the bearing axis (3). The gap between the two bearing components (1, 2) is covered externally by a casing-like seal (12), which covers the through-holes (11) in the second bearing component (2) in such a way that the heads or nuts of fastening screws inserted into the through-holes (11) are enclosed by the seal (12). The seal (12) is preferably an annular metal portion (12a) with sealing lip (12c) meeting annular portion (12b). |
