Abstract: A railway structure for a sliding chair (2), a sliding plate and a ribbed plate (1), respectively, for railway switches or railway crossings. The structure includes friction-reducing sliding members (4, 5) of synthetic plastic material being releasably mounted within recesses (3) in the sliding chair (2) and the plates, respectively. There are accommodated within each recess (3) at least two sliding members (4, 5) having their side surfaces engaged over the major part of the periphery by inwardly protruding walls or profiles of the edge of the recess, so that there results a safe mounting in position of the sliding members (4, 5). The structure makes the interchange of the sliding members a simple procedure.

Abstract: A drive arrangement for shearing drums. Final gear reduction stages are arranged inside the shearing drum (5) and at least one reduction stage is designed as a planetary gear mechanism. The first gear reduction stage arranged inside the shearing drum (5) has intermediate gear wheels (21) rotatably fixed to a rigid intermediate gear wheel carrier (22) connected to a supporting arm (3) of the shearing drum (5). The intermediate gear wheels (21) are driven by a sun gear wheel (20) and interact with an outer internal gear wheel (25). Internal gear wheel (25) is connected in a rotationally fixed manner to a second sun gear wheel (26) of a downstream planetary gear mechanism, the output side (30) of which is connected to the shearing drum.

Abstract: A device for feeding cooling fluid into the inside of a shearing drum. The rotary drive of the shearing drum has at least one gear reduction mechanism contained within the hollow shearing drum. Fluid lines are led into the axial region of the shearing drum via a component which is stationary and rigidly connected to the carrier of the shearing drum. The gear reduction mechanism is arranged concentric with the axis and at least one of the fluid lines is led to at least one lateral end face where the fluid line supplies a fluid distributor which in turn distributes the fluid to various jets and fluid lines.

Abstract: A shearing machine with shearing heads or drums rotatably mounted on a luffable shearing arm and a loading ramp or a conveyor running in the direction of the heading face for receiving and conveying away the sheared material. The loading ramp or the conveyor is supported displaceably in the longitudinal direction of the shearing machine on the machine frame and the horizontal luffing axis of the shearing arm runs transversely to the longitudinal direction of the machine and is mounted adjustably relative to the machine frame in the longitudinal direction of the machine. The adjustment movement of the horizontal luffing axis of the shearing arm is coupled to the adjusting movement of the loading ramp or of the conveyor. The shearing arm is mounted on a bearing bracket which is connected to a carriage. The carriage is displaceable on guides running in the longitudinal direction of the machine and the bearing bracket is connected to a driver which is formed by a slot guide.

Abstract: In a device for monitoring the distance of the front surfaces (3, 4) of rails (1, 2), for example, in connection with expansion joints or supporting structures in which the rails are subjected to multi-axial load, one rail (2) is connected with at least one plate member or, respectively, damping element (6) extending in transverse relation to the longitudinal direction of the rail, noting that the axes (8) of measuring sensors (7) are oriented in normal relation to the plate members (6) and that the rail (2) is supported in proximity of the fixing points for the plate members (6) in a sliding manner and in a manner reliably preventing swivelling out of the moving direction to be measured.

Abstract: A shearing machine with roof-bolt drilling and setting devices which are jointedly connected to the shearing machine and can be hydraulically braced between roof and floor of the roadway. A multiplicity of roof-bolt drilling and setting devices are connected to a common supporting frame, the supporting frame being connected to the shearing machine via guide bars running in the longitudinal direction of the machine.