| 摘要 |
<p>A variable frame (13,24) used for gymnastic exercises is located by three vertical wall mounted support beams (1-3). Longitudinal slots (17) on opposite sides of the support beams provide sliding location for various frame inserts (16). Climbing frames (13) with horizontal or vertical bars are prefabricated such that they can be placed between neighbouring support beams (1,2). To maintain equal distance between horizontal bars of different frames (4-6) spacer blocks (18) are placed inside the location slots (17). Hinged catch levers (19) at the top of the beams lock the stacked frames in position.</p> |
