Abstract: A device for excavating and transporting material, especially earth, the device comprising an excavation appliance that can be rotated about a rotational axis (y) in a rotational direction (u), and a longitudinal conveyor for transporting the excavated material. The excavation appliance comprises an impeller having a conically extending guide surface arranged around the rotational axis (y) in a rotationally symmetrical manner, and guide vanes which radially protrude from the conical guide surface and form an acute angle in relation to the rotational axis (y).

Abstract: In a method for the continuous renewal of a ballast bed (41) of a track from which the rails and sleepers have been removed, by carrying away old ballast (42) and depositing cleaned ballast or new ballast (44) on the underlying surface (46) from which the old ballast (42) has been removed, a removal device (22) which can travel in the working direction (x) continuously picks up the old ballast (42) of the ballast bed (41). The excavated material is conveyed away from the excavation area and possibly passed on for ballast cleaning At the same time, cleaned ballast or new ballast (44) is continuously deposited in the working direction (x) on the underlying surface (46) from which the old ballast (42) has been removed, to form a new ballast bed (43). The removal device (22), as part of an excavating machine (10) traveling in the working direction (x) on the old ballast bed (41), is arranged downstream of the running gear (14, 16) of the excavating machine (10).

Abstract: The invention relates to a device for excavating and transporting material, especially earth, said device comprising an excavation appliance that can be rotated about a rotational axis (y) in a rotational direction (u), and a longitudinal conveyor (18) for transporting the excavated material (41). The excavation appliance comprises an impeller (12, 14) having a conically extending guide surface (20) arranged around the rotational axis (y) in a rotationally symmetrical manner, and guide vanes (22) which radially protrude from the conical guide surface (20) and form an acute angle in relation to the rotational axis (y).

Abstract: In a method for the continuous renewal of a ballast bed (41) of a track from which the rails and sleepers have been removed, by carrying away old ballast (42) and depositing cleaned ballast or new ballast (44) on the underlying surface (46) from which the old ballast (42) has been removed, a removal device (22) which can travel in the working direction (x) continuously picks up the old ballast (42) of the ballast bed (41). The excavated material is conveyed away from the excavation area and possibly passed on for ballast cleaning. At the same time, cleaned ballast or new ballast (44) is continuously deposited in the working direction (x) on the underlying surface (46) from which the old ballast (42) has been removed, to form a new ballast bed (43). The removal device (22), as part of an excavating machine (10) travelling in the working direction (x) on the old ballast bed (41), is arranged downstream of the running gear (14, 16) of the excavating machine (10).

Abstract: The invention relates to a method for measuring tracks in relation to a measuring plan of the track which contains the actual position of the track, in relation to an absolute coordinate system. A measuring platform (2) is guided along the track (1), whereon an inertia platform (6) is arranged, which is initialised, respectively, calibrated to the beginning of the measurement and is aligned in relation to the coordinate system. The inertia platform (6) detects the respective positions of the measuring platform (2) in relation to the coordinate system during the journey of the measuring platform (2). Positional data of the inertia platform (6) is periodically examined based on fixed points (9; 9?) which are arranged in the vicinity of the track and deviations in relation to the coordinate system are corrected by novel calibration, respectively, alignment.

Abstract: The invention relates to a method for measuring tracks in relation to a measuring plan of the track which contains the actual position of the track, in relation to an absolute coordinate system. A measuring platform (2) is guided along the track (1), whereon an inertia platform (6) is arranged, which is initialised, respectively, calibrated to the beginning of the measurement and is aligned in relation to the coordinate system. The inertia platform (6) detects the respective positions of the measuring platform (2) in relation to the coordinate system during the journey of the measuring platform (2). Positional data of the inertia platform (6) is periodically examined based on fixed points (9; 9?) which are arranged in the vicinity of the track and deviations in relation to the coordinate system are corrected by novel calibration, respectively, alignment.

Abstract: To calculate the distance and angle of a measuring platform with respect to reference marks, fans of light are emitted from the measuring platform by light emitters. The light emitters are therefore arranged on a circular path about the central axis to rotate in such a manner that the fans of light are emitted tangentially to the circular path. The distance and the angle can be calculated on the basis of the angle of the reflected fans of light received on the measuring platform by the trigonometric method. This arrangement according to the invention results in precise measurements of the distance and the angle in one circular passage of the light emitter, even when the measuring platform is moving.

Abstract: At a machine for the establishing of a design--track position with a machine frame which runs on chassis and with a working unit coupled thereto, a measuring unit is in accordance with the invention directly placed on the machine frame for the working unit, resp. The measuring unit is, thereby, connected to a control device which controls the working unit in accordance with at least one parameter height position, lateral position and transverse inclination via a adjusting drive. The measuring unit includes an absolute measuring system for a registering of geodetically surveyed fixed points.

Abstract: The process for measuring relative angles between a measuring platform and measuring points provides at least one light ray (f.sub.1, f.sub.2) fanned into a flat band. This light fan is swivelled around an axis of the measuring points light is reflected back to the measuring platform, as soon as the light fan impinges on these reflecting means. The measuring platform has counters, which count continuously until the arrival of a reflecting signal at the measuring platform. The respective next reflecting signal stops at the next provided counter. A counter is provided to count with the same counting pulse, during the entire, predefined angular range, in which the measuring points are to be acquired. From the ratios of the counts stopped by the reflecting signals, to the count of the counter that is still counting, the angle of the corresponding measuring point is calculated. Preferably two light fans (f.sub.1, f.sub.2) that are preferably at right angles to each other are provided.

Abstract: A process and apparatus for surveying a railway track includes a light-receiving and emitting head capable of swivelling about vertical and pitch axes mounted on a measuring platform moveable along the track, as constantly aligned with a reference mark such as by stepping motors controlled by electronic control elements that evaluate the signals detected by the head. These control signals represent at the same time the value of the relative angular displacement of the head with respect to the reference mark while travelling along the track. A space-stabillized gyroplatform on the measurement platform detects the absolute change in position of the measurement platform which is used to correct the angular displacement values of the displacement head. The distance covered is detected by a separate distance measuring device or by the gyroplatform.

Abstract: The measuring device for track building machines comprises an optical receiver device having two lenses (1, 2) aligned in one axis (3) and in each case at least one associated sensor strip (4, 5). The projections of light sources (A, B, C) disposed outside the receiver device onto the sensor strips (4, 5) produce signals which are evaluated and determine the size of the angle of the light source in relation to the optical axis. The provision of light-sensitive sensor strips (4, 5) makes it possible to dispense in an advantageous manner with mechanically rotating components in the receiver device.

Abstract: Operating procedure for the operation of a circulating-air sifter, particularly a cyclone circulating-air sifter for sifting cement, characterized by the feature that the circulating air stream is divided into a primary sifting-air stream and a secondary air stream.

Abstract: Heat exchanger for rotary kiln installations wherein cement klinker or the like is burned and wherein precalcining of raw dust or power is effected in the heat exchanger through supplying fuel thereto, includes a calcining device connectible in a riser pipeline extending from a rotary kiln to the heat exchanger directly above an inlet head of the rotary kiln, the calcining device including a lower stage constructed as a mixing chamber for waste gas from the rotary kiln and a klinker cooler, and an upper stage constructed as a calcining chamber having means for supplying raw dust or powder thereto, the calcining chamber having outlet means comprising a plurality of discharge channels.

Abstract: Circulating air classifier having a separator chamber containing an impeller rotatable about a vertical axis, and a funnel-shaped pre-separator disposed underneath and in open communication with the separator chamber. A blower forces air through a conduit. Material to be classified is fed into the air through an inlet in the conduit. The feed material and air enter the upper part of the pre-separator tangentially causing pre-separation, i.e. some coarse matter to separate. The air with the remaining feed material passes upwardly into the separator chamber wherein aided by the impeller further separation of coarse matter takes place. The air with the suspended fine material passes out of the separator chamber into cyclones wherein the fine material is separated from the air. The thus cleansed air is recirculated to the suction side of the blower.

Abstract: Spring roll mill having stationary grinding rolls yieldingly pressed from within the mill toward a circumferential grinding ring mounted on a grinding dish and revolving together therewith, a central feed inlet for supplying to the mill from above material to be ground therein, and a discharge outlet for discharging the ground material from the mill together with an air flow, includes means for introducing the air flow from below into substantially the middle of the grinding dish.

Abstract: A motor vehicle, especially a military vehicle, which is provided with a relatively narrow boarding entry directly surrounding the body of the driver and with a warning system for indicating the failure of auxiliary aggregates and/or of auxiliary media; a mechanical central warning device is connected in parallel with a central warning lamp which lights up each time an individual one of several warning lamps lights up, each indicating a predetermined failure; the mechanical warning device thereby transmits to the driver the warning by an increase in the pressure which must be exerted by the driver on the gas pedal for purposes of its displacement.

Abstract: Method of producing cement or other material of given fineness and granular structure includes delivering material ground in individual chambers of a tube mill having two adjacent grinding chambers, delivering the ground material from each of the chambers to coarse-grain separator means associated with the chambers, separating a fines-free coarse-grain component in the coarse-grain separator means and returning the coarse-grain component to one of the adjacent chambers, feeding the fines component of the coarse-grain separator means to a fine-grain separator, separating a fine-grain component from a coarse-grain component in the fine-grain separator, withdrawing the fine-grain component from the fine-grain separator as end product, and returning the coarse-grain component of the fine-grain separator to the coarse-grain separator means; and plant for carrying out the foregoing method.