Abstract: A drive arrangement is provided comprising at least one drive device, which is rotatable about a rotational axis, comprises at least one drive element and at least one retaining element, the drive element being arranged offset in the radial direction in relation to the retaining element, and at least one output unit, which is rotatable or pivotable about an axis, the output unit comprising at least one drive recess and at least one retaining recess, the drive element being associated with the at least one drive recess and engaging in the drive recess to drive the output unit, and the retaining element being associated with the retaining recess and engaging in the retaining recess to hold the output unit in a set position, the drive element having a cross section that is different from a circular cross section and that is curved at least in some sections, and/or the drive recess widening in the radial direction in order to define an entry opening for the drive element.

Abstract: A pivoting unit for a tracking apparatus for solar modules, comprising at least one cross member pivotable about a pivot axis, at least one drive arch, which is connected to the at least one cross member and has a plurality of drive recesses and a plurality of retaining recesses, and at least one rotatably mounted drive unit, the rotatably mounted drive unit being designed such that it engages in at least one of the drive recesses of the drive arch in order to pivot the at least one cross member. The drive unit is designed in such a way that it engages in at least one of the retaining recesses in order to hold the cross member in a pivoted position.

Abstract: A device for affixing a rail which has a fastening flange. The device includes a retaining plate having a notch and a clamping device. The notch has a front opening, a first edge portion, a second edge portion, and a third edge portion. The second edge portion and the third edge portion face each other. When the rail is inserted into the notch via the fastening flange, the rail penetrates and crosses the retaining plate and protrudes out of the notch through the front opening, the fastening flange is supported on the first edge portion, the clamping device jams between the fastening flange and the second edge portion and presses the fastening flange against the first edge portion, and the third edge portion acts as a stop so as to block the rail from escaping from the notch in a direction parallel to the first edge portion.

Abstract: A device for affixing a rail comprising a fastening flange, the device including a retaining plate comprising a notch and a clamping device. The notch comprises a front opening, a first edge portion, a second edge portion, and a third edge portion. The second edge portion and the third edge portion face each other. When the rail is inserted into the notch via the fastening flange, the rail penetrates and crosses the retaining plate and protrudes out of the notch through the front opening, the fastening flange is supported on the first edge portion, the clamping device jams between the fastening flange and the second edge portion and presses the fastening flange against the first edge portion, and the third edge portion acts as a stop so as to block the rail from escaping from the notch in a direction parallel to the first edge portion.