Concrete feed system for especially tunnel construction has change unit for concrete distribution device for automatic change of connection between supply line and concrete feed lines

摘要

The concrete feed system has a concrete distribution device (3) for connecting of a supply line (2) connected to a concrete pump (1) to at least one selected concrete feed line (4,5). The concrete distribution device has a change unit for the automatic change of the connection between the supply line and concrete feed lines. The change unit has a fixed support disc (8) with through-holes (9) and connections for the concrete feed lines, and a distribution disc (11) motor driven relative to the support disc and provided with an opening for aligning with the through-holes in the support disc.