| 摘要 |
The shaft frame has a base (1) which has a cut out (4) for fixing of an entry aid integrated into the geometry of the base. The cut out is irremovably connected to the base and has at least one guide channel (11) having a vertical section and an intermediate horizontal section (11') to receive a projecting pin on the entry aid. The cut out is positioned in a preformed recess (16) for a soil catcher. Claims include a manhole for the shaft. |
