| 摘要 |
<p>BEARING STRUCTURE FOR EARTH STATION ANTENNAS A lockable bearing apparatus for permitting rotation of adjacent members such as parts of an antenna mounting structure, wherein the adjacent members define circular bearing flanges surrounded and received by a coupling that can be tightened or loosened to lock or release the adjacent members. The coupling comprises an annular member defining an annular inwardly opening recess for receiving the flanges, and the flanges engage one another and are angled with respect to one another such that the coupling engages the flanges and urges them axially toward one another when the coupling is tightened. Stabilizing means for maintaining orientation of the adjacent members during rotation is disclosed, as well as means for selectively rotating the adjacent members with respect to one another. In the preferred embodiment for providing an azimuth axis in an antenna mounting structure, inexpensive sheet metal components are connected by the bearing apparatus embodying the invention.</p> |
