| 摘要 |
The arrangement has a base connecting at least one fixed part (15,16) and a vertically movable carriage (13) with a horizontally protruding shaft (12) connected to the fitting (2) to enable the fitting to rotate about the central axis of the shaft. A first lift and turn device (11,17,18,21,22,25) has a disc (11) mounted on its shaft with a round peripheral surface and attached to the fitting. At least one pair of wheels (21,22) is mounted on the fixed part and connected to the disc so that when the wheels turn in opposite directions the disc and hence the fitting are influenced to move vertically, and to rotate about the central axis when the wheels turn in the same direction |
