Robot for renovating drainage pipes has grinding head operated by compressed air fed into inflatable tubular body, longitudinal vent channels running through this and connecting space ahead of robot with space behind it

摘要

The robot for renovating drainage pipes (2) has a grinding head (4) which is operated by compressed air fed into an inflatable tubular body (8). Longitudinal vent channels run through this and connect the space (10) ahead of the robot with the space (11) behind it.