Abstract: A soil compactor, including at least one compactor roller, which is free to rotate about an axis of rotation of the roller, with a plurality of roller segments, which follow one another along the direction of the axis of rotation of the roller, wherein, in each case, at least one electromotive drive for producing an oscillating torque is assigned to each roller segment.

Abstract: A device for detection of the motion of a compactor roller (20) of a soil compactor (10) rotatable about an axis of rotation (A), where said roller comprises on one inside of a roller mantle (22) a plurality of motion sensors (ai) arranged in the circumferential direction around the axis of rotation (A) and at a spacing from each other and moveable with the roller mantle (22) around the axis of rotation (A).

Abstract: A method is provided for the correction of a measured value curve by eliminating periodically occurring measurement artifacts. The method includes steps of provision of a measured value curve representing a periodically repeating event, division of the measured value curve into period-measured value curves allocated to a plurality of successive periods of the periodically repeating event, based on the period-measured value curves allocated to the plurality of periods, determination of a mean period-measured value curve, formation of a difference between the period-measured value curves allocated to the plurality of periods, and the mean period-measured value curve for the provision of the difference-period-measured value curves allocated in each case to the periods, and based on the difference-period-measured value curves, determination of a corrected measured value curve for the plurality of successive periods of the periodically repeating event.

Abstract: A method to determine a slip state of the compactor roller of a soil compactor caused by an oscillation motion of a compactor roller, comprising the steps: a) Preparation of an acceleration quantity related to the oscillation motion of the compactor roller b) Based on the acceleration quantity, preparation of an acceleration frequency spectrum, c) Based on the acceleration frequency spectrum, determining the slip state of the compactor roller.

Abstract: Device to determine a size of contact representing a contact state between a compactor roller and a substrate to be compacted, encompassing a compactor roller rotatable in at least one acquisition circumference area around a compactor roller axis and at least one contact sensor generating a contact signal, wherein the contact signal indicates a contact start and a contact end of an acquisition circumference area upon the substrate to be compacted.

Abstract: A device for detection of the motion of a compactor roller (20) of a soil compactor (10) rotatable about an axis of rotation (A), where said roller comprises on one inside of a roller mantle (22) a plurality of motion sensors (ai) arranged in the circumferential direction around the axis of rotation (A) and at a spacing from each other and moveable with the roller mantle (22) around the axis of rotation (A).

Abstract: In a winder mandrel (1) with radially movable spreading segments (2) which are arranged on the periphery, a mandrel body (3) and a pulling rod (4), the spreading segments (2) and/or the mandrel body (3) and/or the pulling rod (4) are configured as magnets. A method for operating a winder mandrel of this type provides for the spreading segments (2) and/or the mandrel body (3) and/or the pulling rod (4) to be configured as electromagnets, and for the supply voltage of the electromagnets to be switched on during initial winding of the beginning of the strip, lowered during the rolling and raised again when the strip is slipped out.

Abstract: In order to provide a spray boom with a plurality of spray nozzles for a hydraulic descaling facility with which a high temperature constancy from beginning to the end of the rolling stock is insured and a too rapid cooling of the surface is prevented, it is proposed, in accordance with the invention, to assign a check valve to each spray nozzle.