Abstract: The invention relates to an agricultural solar tracker (1) and to a method for the use and/or control of at least one such agricultural solar tracker (1). The agricultural solar tracker (1) comprises a plurality of solar modules (2), which are arranged so as to be swivelable on a support structure comprising at least one crossed four-bar linkage (25). The crossed four-bar linkage (25) constitutes a support structure for the solar modules (2). The swivel movement of the solar modules (2) about a swivel angle (a) is produced by the at least one crossed four-bar linkage (25), wherein the agricultural solar tracker (1) is designed to swivel the solar modules (2) beyond the middle of a foundation (21) into an end position.

Abstract: The invention relates to a support device for pivot axes of solar modules which includes at least one first support leg and at least one second support leg, with each support leg configured for anchoring in a ground surface. A bridge mechanically couples the at least one first support leg to the at least one second support leg. A bearing is supported by the bridge to accommodate a pivot axis, with the at least one first support leg and the at least one second support leg detachably connected to the bridge.

Abstract: A bearing axle for photovoltaic modules includes at least two tubes, which each have a non-circular cross section at least in one end region. The non-circular cross sections of the at least two tubes are designed to correspond to each other such that a non-rotatable connection between at least one first and at least one second of the at least two tubes can be produced by way of inserting the at least one first of the at least two tubes into the at least one second of the at least two tubes. The bearing axle includes at least one separate connection means, which can be arranged intermediately between at least two tubes, and by way of which the particular at least two tubes are connectible non-rotatably to each other by form-lockingly coupling the at least one connection means to their free end regions with non-circular cross sections.

Abstract: The invention relates to an alignment and/or tracking device (1) for solar collectors (x), comprising a plurality of pivot axles (S) on each of which a plurality of solar collectors (5, 5?) are mounted, and a jointly acting adjustment device (6, 7, 8) which couples the pivot axles (S) to one another in such a way that the pivot axles (S) are jointly pivotable. The alignment and/or tracking device according to the invention is characterised in that the adjustment device (6, 7, 8) is coupled to each of the pivot axles (S) by at least one articulation joint (GL), in particular a universal joint.

Abstract: The invention relates to a spring-suspended, bearing force-optimized belt-band traveling gear (10) for ground vehicles, particularly for self-propelled agricultural machines and other off-road vehicles, comprising at least two outer deflection rollers (14, 15, 16, 17) over whose periphery an endless belt-band (22) rolls off, and at least one supporting roller (24) for supporting the belt-band section, which is in contact with the ground, between both deflection rollers (14, 15, 16, 17). A bogie truck (12, 13), in which the at least two deflection rollers (14, 15, 16, 17) are mounted in a manner that enables them to rotate, is supported against a body frame of the vehicle by means of a first fluidic suspension unit and/or damping unit. The at least one supporting roller (24) is supported on the bogie truck (12, 13) by means of a second fluidic suspension unit and/or damping unit.

Abstract: The invention relates to a spring-suspended, bearing force-optimized belt-band traveling gear (10) for ground vehicles, particularly for self-propelled agricultural machines and other off-road vehicles, comprising at least two outer deflection rollers (14, 15, 16, 17) over whose periphery an endless belt-band (22) rolls off, and at least one supporting roller (24) for supporting the belt-band section, which is in contact with the ground, between both deflection rollers (14, 15, 16, 17). A bogie truck (12, 13), in which the at least two deflection rollers (14, 15, 16, 17) are mounted in a manner that enables them to rotate, is supported against a body frame of the vehicle by means of a first fluidic suspension unit and/or damping unit. The at least one supporting roller (24) is supported on the bogie truck (12, 13) by means of a second fluidic suspension unit and/or damping unit.

Abstract: The invention relates to a spring-suspended, bearing force-optimized belt-band traveling gear (10) for ground vehicles, particularly for self-propelled agricultural machines and other off-road vehicles, comprising at least two outer deflection rollers (14, 15, 16, 17) over whose periphery an endless belt-band (22) rolls off, and at least one supporting roller (24) for supporting the belt-band section, which is in contact with the ground, between both deflection rollers (14, 15, 16, 17). A bogie truck (12, 13), in which the at least two deflection rollers (14, 15, 16, 17) are mounted in a manner that enables them to rotate, is supported against a body frame of the vehicle by means of a first fluidic suspension unit and/or damping unit. The at least one supporting roller (24) is supported on the bogie truck (12, 13) by means of a second fluidic suspension unit and/or damping unit.

Abstract: The invention relates to a curve path of a switch comprising switch tongues, a main track and a branch track, which curve path from the beginning of the curve path to the end of the curve path is comprised of several portions having different curvatures 1/R, R being the radius of curvature, wherein the coefficient of curvature &agr;=1/R/1/Rmin at the beginning of the curve path (&agr;A) and at the end of the curve path (&agr;E) is selected to be ≧0 and the point, or a region, in which &agr;=1 is located at a relative distance &ngr;=L/Lges≠0.5 from the beginning of the curve path, L being the distance from the beginning of the curve path and Lges being the length of the curve path.

Abstract: A railway crossing, sometimes referred to as a diamond crossing, has four substantially identical crossing beams which have cutouts made for a wide range of crossing angles. At least two separate base plates are cut to fit the required crossing angle and positioned beneath the crossing beams. Each crossing beam has a flangeway groove extending along at least a portion of the beam length and each beam has integral rail shaped ends for connection to a standard rail section. The crossing beams have top cutouts and bottom cutouts that intersect and are set for a predetermined crossing angle. Boltless locator pins prevent horizontal movement of the top and bottom beams on the plates, and elastic fasteners hold the top and bottom beams to the plates to restrict vertical movement between the top and bottom beams and the plates.