| 摘要 |
The known shoring devices consist of two shoring plates (1, 2) of large area which are held at a distance apart by a supporting frame arranged in the centre or two supporting frames (3, 4) arranged at the ends of the shoring plates (1, 2) and are connected to form a unit. A supporting frame consists of two vertical abutment posts and stays (5) which are variable in length and are held at right angles to the abutment posts and shoring plates (1, 2) by means of leaf springs (15, 16, 16'), the ends of which press with pretension against the stays (5) from above and below. The novel shoring device, for the same loading capacity, is to be lighter and less expensive to manufacture and is to permit simpler stockkeeping as well as simpler exchange of the springs (15, 16, 16'). To this end, plane abutment plates (17) are arranged in the abutment posts above and below the horizontal axes and parallel to these axes, on which abutment plates (17) at least one plane leaf spring (15, 16, 16') each is fastened in an easily interchangeable manner. <IMAGE> |
