| 摘要 |
Provided is a turning structure, which is capable of reliably carrying a radial load, an axial load, and a moment load applied to the turning structure, and is producible at low cost. The turning structure includes: a rolling bearing mechanism (8) including: a stationary ring (81), which is formed of a plurality of arc-like track rails (84) each having a predetermined curvature, and is formed into an endless annular shape; and a plurality of slide blocks (82), which are mounted to the stationary ring (81) via a large number of rolling elements (83), and are freely movable along the stationary ring (81) ; and a slide bearing mechanism (9) including: a turning table (91), which is fixed to the plurality of slide blocks (82) of the rolling bearing mechanism (8), and is formed into an annular shape, the turning table (91) being configured to support an object to be turned; and a bearing member (92), which is formed into a substantially C-shape in cross section so as to sandwich the turning table (91) from an axial direction of the turning structure, and forms a slide bearing together with the turning table (91). |
