# US 2014/0197829 A1 · Mobile carrier system for at least one sensor element designed for non-destructive testing > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0197829 A1 - Document ID: US20140197829A1 - Status: Published application - Kind: A1 - Application number: 14/151,020 - Filed: 2014-01-09 - Published: 2014-07-17 - Earliest claimed: 2013-01-11 - Assignees: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V. - Applicants: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V. - Inventors: Klaus SZIELASKO; Jochen Horst KURZ; Wajahat HUSSAIN - Web page: https://patentgrep.com/patent/US20140197829A1 ## CPC - G01N 27/82: for investigating the presence of flaws - B62D 57/022: {consisting of members having both rotational and walking movements} - B62D 57/024: specially adapted for moving on inclined or vertical surfaces (endless-track vehicles for ascending or descending stairs B62D55/075; hand-carts with provision for travelling up or down stairs B62B5/02) - B62D 57/032: with alternately or sequentially lifted supporting base and legs; with alternately or sequentially lifted feet or skid (B62D57/024 takes precedence) - G01M 5/0058: {of elongated objects, e.g. pipes, masts, towers or railways} - G01M 5/0091: {by using electromagnetic excitation or detection} - G01N 29/225: {Supports, positioning or alignment in moving situation} - G01N 29/265: by moving the sensor relative to a stationary material - G01N 27/90: using eddy currents - G01N 2291/2626: Wires, bars, rods - G01N 2291/2634: cylindrical from outside - G01N: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES (measuring or testing apparatus or processes other than immunoassay, involving enzymes or microorganisms C12M, C12Q) - B62D: MOTOR VEHICLES; TRAILERS (steering, or guiding on a desired track, of agricultural machines or implements A01B69/00; wheels, castors, axles, increasing wheel adhesion B60B; vehicle tyres, tyre inflation or tyre changing B60C; connections between vehicles of a train or the like B60D; vehicles for use on rail and road, amphibious or convertible vehicles B60F; suspension arrangements B60G; heating, cooling, ventilating or other air treating devices B60H; windows, windscreens, non-fixed roofs, doors or similar devices, protective coverings for vehicles not in use B60J; propulsion plant arrangements, auxiliary drives, transmissions, controls, instrumentation or dashboards B60K; electric equipment or propulsion of electrically-propelled vehicles B60L; power supply for electrically-propelled vehicles B60M; passenger accommodation not otherwise provided for B60N; adaptations for load transportation or to carry special loads or objects B60P; arrangement of signalling or lighting devices, the mounting or supporting thereof or circuits therefor, for vehicles in general B60Q; vehicles, vehicle fittings or vehicle parts not otherwise provided for B60R; servicing, cleaning, repairing, supporting, lifting, or manoeuvring, not otherwise provided for, B60S; brake arrangements, brake control systems or parts thereof B60T; air-cushion vehicles B60V; motor-cycles, accessories therefor B62J, B62K; testing of vehicles G01M) - G01M: TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR ## Abstract The invention relates to a mobile carrier system for at least one sensor element for testing test objects having convex surfaces. The system is provided for testing test objects that are at least made of ferromagnetic material. For this purpose, two first rollers are attached to a frame, the rotational axes of which are oriented parallel to each other and at a distance from each other. The distance of the two first rollers can be varied, and one of the two first rollers is attached to a carriage, which can be moved perpendicularly to the rotational axes of the two first. rollers. A drive for raising and lowering the first rollers is present on the two first rollers. Two pairs of second rollers are attached to the frame between the two first rollers. At least one pair of the second rollers comprises a rotary drive. ## Claims ### Claim 1 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) ### Claim 2 (depends on 1) The carrier system according to claim 1, characterized in that the linear drive (5) is a rack and pinion, spindle or piston drive or has an electric motor-driven lever or eccentric mechanism. ### Claim 3 (depends on 1) The carrier system according to claim 1, characterized in that an electric energy store (9) is present. ### Claim 4 (depends on 1) A carrier system according to claim 1, characterized in that different sensor elements are present or can be replaceably attached. ### Claim 5 (depends on 1) A carrier system according to claim 1, characterized in that an electronic control unit (8) is present. ### Claim 6 (depends on 5) The carrier system according to claim 5, characterized in that at least one sensor element or an acceleration sensor is integrated into the electronic control unit. ### Claim 7 (depends on 1) A carrier system according to claim 1 characterized in that a pair of the second rollers (4) is attached to the carriage (12). ### Claim 8 (depends on 1) A carrier system according to claim 1, characterized in that the drives for raising and lowering the first rollers (1 and 2), for the rotation of second rollers (3, 4) and the linear drive (5) are connected to the electronic control unit (8). ### Claim 9 (depends on 1) A carrier system according to claim 1, characterized in that a module for wireless data transmission is present. ### Claim 10 (depends on 1) Use of the carrier system according to claim 1 for the non-destructive testing of wire ropes, pipes or rods.