| 摘要 |
The device has crossbars (3) that are arranged between the side walls (2). The clamping rockers are provided in paired engagement grooves. The support plates (6) are arranged between the side walls of frame. A spindle (7) is rotatably supported in the grooves. The securing webs are provided parallel to center axis of the spindle. A return bars (10) is arranged opposite to securing webs, such that center of mass of clamping rocker lies between the securing webs in unloaded state and below the center axis of spindle in loaded state. |
