| 摘要 |
The invention relates to a basketball-type double board used for training, competitions and for various leisure activities. According to the invention, the board consists of two basketball boards () placed back to back, joined to one another by a reinforced metallic frame () which fixes two metallic rods (), clamped in a tilting system mounted on the center of a ceiling () of a sports hall, above the field center line, the system having a bar () for fixing the two metallic rods () and two bearings (), wherein it is rotated by an angle of 90°, the fixing bar () being coupled by means of two gear wheels (), a large one and a small one, respectively, with a ratio of 1 : 10 between their diameters, the small wheel () being placed on the axle of an electric motor () provided with an operation limiter and with a system for blocking the boards () to the ceiling (). |
