Abstract: A mobile collecting device (22) for the high-pressure water jet (26) of a water-jet tool (18), especially for working in confined places with difficult access in turbines or the like, in which a more flexible and safer operation is achieved by a closed collecting chamber (24), which extends over a large area and includes an outlet (30), and in which a rigid first collecting bed (34) formed of a first high-pressure-resistant material is arranged.

Abstract: In a rolling element (10) for the polydirectional travel of a vehicle on a magnetically attractive underlying surface (19), a compact, robust and simple design is made possible in that the rolling element (10) has a spherical element (11) and at least one permanent magnet (14). The spherical element (11) supports the at least one permanent magnet (14) in such a way that the at least one permanent magnet (14) maintains its spatial orientation when the spherical element (11) rolls on the underlying surface (19), and the spherical element (11) is held in contact against the underlying surface (19) by the magnetic interaction of the at least one permanent magnet (14) with the underlying surface (19).

Abstract: An apparatus for inspection of a gap between two surfaces, at least one of which is ferromagnetic, for example in a generator, includes a sensor platform (26) for one or more sensors (26a) and an elongated mount (23), which can be moved out, for the sensor platform (26). The mount (23) can be moved in and out of the gap through an access opening, can be moved out over the length of the gap and can be rolled up outside the gap by a drive (24). In its moved-out state, the mount (23) has a curvature in a lateral cross section. In addition, the mount (23) has a plurality of magnets (27) by which the mount (23) is brought into contact with a ferromagnetic surface. The magnets (27) are attached to the side of the mount (23) facing away from the ferromagnetic surface, ensuring that the mount (23) slides along a ferromagnetic surface. The apparatus allows inspection of gaps from a height of 4 mm and is distinguished by a simple and physically small design.

Abstract: In a rolling element (10) for the polydirectional travel of a vehicle on a magnetically attractive underlying surface (19), a compact, robust and simple design is made possible in that the rolling element (10) has a spherical element (11) and at least one permanent magnet (14). The spherical element (11) supports the at least one permanent magnet (14) in such a way that the at least one permanent magnet (14) maintains its spatial orientation when the spherical element (11) rolls on the underlying surface (19), and the spherical element (11) is held in contact against the underlying surface (19) by the magnetic interaction of the at least one permanent magnet (14) with the underlying surface (19).

Abstract: A drive unit (10) for an inspection vehicle which can be used on ferromagnetic bases (19), especially in generators, which drive unit includes a motor-powered crawler track (18) and also magnetic devices for holding the drive unit (10) on the base (19). An improved insensitivity to uneven spots in the base is achieved by the crawler track (18), in the region where it bears upon the base (19), being guided via inner, spring-mounted running wheels (12), and by the magnetic devices being integrated in the running wheels (12).

Abstract: An apparatus for inspection of a gap between two surfaces, at least one of which is ferromagnetic, for example in a generator, includes a sensor platform (26) for one or more sensors (26a) and an elongated mount (23), which can be moved out, for the sensor platform (26). The mount (23) can be moved in and out of the gap through an access opening, can be moved out over the length of the gap and can be rolled up outside the gap by a drive (24). In its moved-out state, the mount (23) has a curvature in a lateral cross section. In addition, the mount (23) has a plurality of magnets (27) by which the mount (23) is brought into contact with a ferromagnetic surface. The magnets (27) are attached to the side of the mount (23) facing away from the ferromagnetic surface, ensuring that the mount (23) slides along a ferromagnetic surface. The apparatus allows inspection of gaps from a height of 4 mm and is distinguished by a simple and physically small design.

Abstract: A mobile collecting device (22) for the high-pressure water jet (26) of a water-jet tool (18), especially for working in confined places with difficult access in turbines or the like, in which a more flexible and safer operation is achieved by a closed collecting chamber (24), which extends over a large area and includes an outlet (30), and in which a rigid first collecting bed (34) formed of a first high-pressure-resistant material is arranged.

Abstract: A drive unit (10) for an inspection vehicle which can be used on ferromagnetic bases (19), especially in generators, which drive unit includes a motor-powered crawler track (18) and also magnetic devices for holding the drive unit (10) on the base (19). An improved insensitivity to uneven spots in the base is achieved by the crawler track (18), in the region where it bears upon the base (19), being guided via inner, spring-mounted running wheels (12), and by the magnetic devices being integrated in the running wheels (12).