Patents Assigned to Hochtief Aktiengesellschaft Vorm. Gebr. Helfmann
  • Patent number: 4613258
    Abstract: An apparatus for moving casing rings of an interior casing in tunnels, shafts and the like structures is disclosed. The apparatus includes a tubular support bridge structure arranged interiorly with respect to the inner casing, and a longitudinally movable transport carriage with carriage support ring which concentrically surrounds the support bridge structure. The apparatus also includes a segment support ring which carries adjustment manipulator assemblies for a respective casing ring. The segment support ring can be inclined with respect to the carriage support ring. A first intermediate support ring is mounted between the carriage support ring and the segment support ring. The connection for this includes cross guide assemblies and two pairs of control piston-cylinder assemblies. The control piston-cylinder assemblies serve to actuate the first intermediate support ring.
    Type: Grant
    Filed: April 23, 1985
    Date of Patent: September 23, 1986
    Assignee: Hochtief Aktiengesellschaft Vorm. Gebr. Helfmann
    Inventor: Volker Hentschel