| 摘要 |
Independent unit, which can move along a non-horizontal surface and which encompasses a first device and a second device 48, which are connected by means that permit a relative translational and rotational displacement in relation to a plane parallel with the surface, a first and second means of fixing 2, which are carried by the first and the second device respectively, and are capable of fixing the unit immovably on the surface, and in which the means of fixing carried by at least one of the devices is connected to the said device by means which can displace the device in relation to the means of fixing in a direction perpendicular to the surface. The means of fixing 2 of the first device are preferably formed by a plurality of adhesion devices, which form a polygon and are fitted opposite the centre of the means of fixing of the second device, the unit furthermore including a processing or inspection tool 60, which is mounted in such a way that it can perform a rotational displacement in relation to the first device. <IMAGE>
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