Mobile carrier system for at least one sensor element designed for non-destructive testing

A mobile carrier system for at least one sensor element, which is de-signed for non-destructive testing and can be used to test test objects, which are at least predominantly made of a ferromagnetic material and have a convex surface, wherein

• two first rollers (1 and 2) are attached to a frame (10), the rotational axes of which are oriented. parallel to each other and disposed at a dis-tance from each other, the distance of the two first rollers (1 and 2) being variable by way of a linear drive (5) and one of the two first rollers (1 or 2) being attached to a carriage (12), which can be moved perpendicularly to the rotational axes of the two first rollers (1 and 2) and is guided in the frame (10);
• a respective drive for raising and lowering the first rollers (1 and 2) is present on he two first rollers (1 and 2), by way of which the first roll-ers (1 and 2) can be moved in the direction of the surface of the test object (11) or in the opposite direction;
• and
• two pairs of second rollers (3 and 4) are attached in each case between the first two rollers (1 and 2) on the frame (10), the rotational axes of which are oriented parallel to each other and perpendicularly to the rotational axes of the first rollers (1 and 2);
• and
• at least one pair of the second rollers (3 or 4) comprises a rotary drive;
• and
• a permanent magnet (7) for holding the carrier system on the test ob-ject (11) and at least one sensor element that is designed for non-destructive testing can be attached to the frame (10)