| 摘要 |
A movable cover structure for a fixed ground area, such as a swimming pool cavity (4), has a platform (15) which is displaceable horizontally from a position where it covers the fixed ground area to a position where it is retracted clear of such area. Square section channels (10) are inset along the inner surfaces of opposed long vertical side walls of the cavity (4) and house guide tracks (11). Guide wheels (19) are provided along opposed long sides of the platform (15) and engage with the guide tracks (11). Movement of the platform (15) is effected by a motor (12a) driving toothed wheels (13) which engage with toothed racks (20) provided on the platform (15). In the retracted position the platform (15) is stowed beneath an adjacent horizontal flat floor surface (6) within an inner space (9) below the surface (6). Sensors are provided to detect the presence of persons in the swimming pool.
|
