| 摘要 |
The rotor (2) has chambers (5, 6) which are arranged concentrically about its axis (4), are open in the axial direction and are intended for receiving free-flowing concrete. The rotor body containing the chambers (5, 6) consists of an elastic material, for example of a single-part rubber body which is enclosed and supported on all sides by a metal cage (7, 8, 9), so that the chamber walls (6') yield as a result of superatmospheric pressure, when blowing out the concrete, in order to avoid adhesion of any remaining concrete. <IMAGE> |
