Abstract:
A linkage generally consisting of a first shaft having a first connecting component provided with an annular in a face thereof, disposed coaxially with such first shaft; a second shaft having a second connecting component provided with an annular disposed axially with the second shaft inserted in the annular recess of the first component; and a set of circumferentially spaced threaded fasteners securing such first and second components together, wherein the first and second components are angularly displaced relative to a common axis thereof so that a residual imbalance of one of such components offsets a residual imbalance of the other of such components.
Abstract:
A self-advancing roof support for the face roof support in underground mining operations, having a plurality of supporting frames with self-advancing mechanisms acting perpendicular to the breast of the working, which mechanisms advance the supporting frames in the direction of the breast of the working. In order to facilitate the relocation of a winning face equipped with such a self-advancing roof support, these supporting frames have a plurality of self-advancing gears acting parallel to the breast of the working, to successively shift the supporting frames in the lateral direction parallel to the breast of the working, so as to produce a cut or road for the installation of a new winning face at a head side of the face equipment and to advance the self-advancing roof support sideways into the road together with the complete face equipment while maintaining the formation.
Abstract:
The invention relates to a method and device for producing a torque-transmitting link on a drive shaft of a motor vehicle between two rotationally symmetrical components in the joint area, particularly the outer part (22) of a joint (18) of a drive shaft and a flange part (16) of a gearshaft, wherein said components are joined to each other by means of several screws (24) which are distributed in a peripheral direction. The screws cross through annular bearing surfaces (16a, 22a) of the components and an annular centering collar (16c) is formed on one component, encompassing the outer periphery of the other component in a loose fit. In order to obtain a productively advantageous and simple-to-mount link, a defined remaining balance error of at least one of the components is determined and peripherally marked, the component is fixed in a de-axised manner with respect to the other component according to the terms of the loose fit, and the remaining balance error is essentially compensated. Preferably, the annular bearing surface (16a, 22a) of one or two components is recessed at least in the region of the screws (24) in a radially outward manner as far as the centering collar (16c) in order to produce the defined de-axised effect.
Abstract:
A double-chain conveyor is assembled of trough sections defining a bottom plate provided with lateral guiding walls for scraper elements and intermediate guides extending along the entire length of the conveyor and guidingly engaging lateral edges of flat chain elements arranged parallel to the bottom plate of the trough. The flat chain elements are provided with oblong holes extending in the direction of the chain and linking vertically directed ring-shaped chain elements with a play which permits shifting movements of all chain elements in the longitudinal direction. Intermediate drives are provided between superposed bottom plates of the trough and drive a chain wheel engaging the flat chain elements both in the upper and in the lower flight of the conveying chain.