Vae Aktiengesellschaft

Voest-alpine Eisenbahnsysteme Gesellschaft M.b.h.

Voest-alpine Maschinenbau Gesellschaft M.b.h.

Wolfgang Nayer

Gerald Durchschlag

Franz Rotter

Josef Frauscher

Heribert Quantschnigg

Erwin Steurer

Erich Sattler

Ivan Sutnar

In a device for measuring the temperatures of axles and/or bearings to locate hot-boxes or overheated brakes in rolling stock, in which the infrared rays of the measuring points are directed onto an infrared receiver ( ) via an oscillating mirror ( ), whereby infrared rays emitted transversely to the longitudinal direction of the rails are detected in the scanning plane defined by the oscillation of the oscillating mirror ( ), at least two deviation mirrors ( ) are arranged within the scanning plane at a distance (a) from one another transverse to the longitudinal direction of the rails. The deviated infrared rays of the deviation mirrors ( ) are detected in a chronological sequence in accordance with the oscillation of the oscillating mirror ( ).

Device for measuring the temperatures of axles or bearings for locating hot-boxes or overheated brakes in rolling stock

The invention relates to a casing for a hot box or blocked brake detection scanner (,) comprising infrared detectors and a heating means, wherein the casing is comprised of a casing lower part and a lid (,), the lid (,) is designed as a chimney top with lateral surfaces (,) converging towards the upper edge and carrying an electrical heating means (,) on their inner sides (,), and the lid (,) includes openings (,) for the scanning geometry of the infrared detector(s) on its upper edge or near its upper edge.

Casing for a hot box or blocked brake detection scanner

An adjustable scanning range is provided for vehicle-activated measuring equipment of the type which includes receiver coils positioned on opposite sides of a transmitter such that voltages induced in the received coils from the transmitter are altered as the vehicle passes, the measuring occurring through the application of the induced voltages to a comparison circuit. Altering the input(s) to the comparison circuit by a constant voltage value allows the scanning range to be adjusted.

Procedure for establishing the scanning range of vehicle-activated

In a method for monitoring the condition of rail switch points and for detection of premature abrasive wear-and-tear in the region of the tongue switching rail (3) of the points, the signals from at least one proximity sensor (2) in the region of the tongue switching rail (3) of the points are evaluated when the tongue switching rail is travelled upon, and the smallest measured value of the separation distance (l) during the travel is stored in memory. The smallest measured value stored in memory and at least a first limiting value for the smallest separation distance are compared with one another and, when the smallest measured value in memory exceeds this first limiting value, a warning signal is generated.

Method for monitoring the condition of rail switch points

In a process for measuring axle bearing temperatures in order to locate hot wheels in moving railroad cars with infrared receivers and with an oscillating scanning beam that is oriented transversely to the longitudinal direction of the rail, the analog measured values from the infrared receiver are digitized and then coupled with the oscillation frequency orientation of the scanning beam so that at least two complete oscillations of the scanning beam are analyzed for each axle. A mean value is formed from the measured value corresponding to one sub-area of a first oscillation of the scanning beam and from the measured value that corresponds to subsequent oscillations of the scanning beam. When this is done, the calculation of the average or mean value is repeated for a specific predetermined maximum number of oscillations of the scanning beam and for as long as an activation signal initiated by the wheel signals from the same axle is within the measuring angle of the center. For each calculation, the highest mean value of the measured values of corresponding sub-areas is evaluated.

Process and system for measuring axle and bearing temperatures

A device for determining the condition of railway switches or railway crossings by monitoring the end position of tongue rails (2), said device having a sensor (18) within the area of the theoretical frog point (17) of a frog (8), said sensor giving on occasion of a mechanical collision with the wheel flange or with the running surface of the wheel a signal indicating premature wear within the area of the frog.

Growing community of inventors

Zeltweg, Austria

Wolfgang Nayer