Apparatus for use in renovation of tube systems, in particular sewer tube systems

Apparatus for use in renovating tube systems, in particular sewer tubes of circular cross section, the apparatus comprising:

• an apparatus body or a frame on wheels, said apparatus body or frame being adapted to be moved inside a tube in such a way that the position of the apparatus in the tube is known;
• a motor-driven tool mounted on a carrier member and extending beyond an end part of a rotatable portion of the apparatus, said rotatable portion being journal led so as to be rotatable with respect to said apparatus body or said frame around a longitudinal axis of the apparatus;
• and
• a lifting member arranged to move the motor-driven tool diametrally within the tube;
• wherein said carrier member includes a carrier arm of springy material, for example spring steel, said carrier member is pivotally connected, opposite said motor=driven tool, to said rotatable portion at a distance from said end part thereof, and
• wherein said lifting member is interposed between said end part of the rotatable portion and the pivot axis of the carrier arm, said pivot axis extends in a direction perpendicular to said longitudinal rotation axis of the apparatus.