| 摘要 |
A gas turbine of the type having a pair of rotary heat exchanger discs mounted for rotation about a common axis transverse to the main axis of the turbine on opposite sides thereof is provided with a drive arrangement which will provide for expansion between the disc and an annular drive ring surrounding the disc. The annular drive ring is provided with a plurality of external teeth disposed in meshing engagement with a pinion drivingly connected to the main gear box of the turbine. A plurality of cylindrical rods are mounted in a plurality of equally spaced apart grooves in the circumference of each of the discs. Each cylindrical rod is formed with an arcuate groove in the external surface thereof for the reception of a key member having a convex surface which rests in the arcuate groove and two plain surfaces which define a dihedron, the edge of which is disposed adjacent the internal surface of the annular ring. A pair of wedge members are disposed in engagement with each of the surfaces of the key. The wedges are biased into engagement with the key by means of a spring extending between the wedge and a rib formed on the internal surface of the annular ring. |
