Maintenance device and method for introducing a maintenance tool in an elongated hollow body

摘要

Holding device for elongate hollow body, shaped tube is formed for conducting a fluid, with a sealing device (4) which is provided for sealing a working zone (9) against an environment ( 30) of the hollow body (2), which forms a side facing the hollow body (2) a curved surface, at least partially and to adopt the sealing position relative to the surface (7) of the hollow body (2) is movable therealong in a first direction (a) or in a second direction extending (B) transverse to the first, and the sealing device is provided with an adapter (3) which can be placed tightly to the hollow body (2) having a surface (7) leading out of the hollow body (2) and forming a working space (9) serving to access hollow body (2), and a movable element (11 ) of the sealing device it is movable along the adapter ( 3) maintaining a closure shutter, it characterized in that the holding device is formed such that the movable member (11) of the sealing device (4) is movable over the working area (9) both the first as in the second direction (B) such that at least one function unit (12) is movable relative to a surface of the hollow body (2) to be maintained over a motion model of two dimensions, and two-dimensional movement is performed as a superimposed movement of two movements which run at right angles to each other.