GRAW - Electronic Track Gauges and Rolling Stock Measurement

GRAW designs intelligent, computer based geometry measurement devices and systems for rails, turnouts, track, and wheels. Mainly operating in the railways and steel industries GRAW, formed in 1992, also provide software systems for the archiving and processing of measurement results.

GRAW offers measurement systems for track and rolling stock. Database and data processing systems are also available for diagnostic analyses of the inspected items.

DIGITAL TRACK AND TURNOUT GAUGE

The gauge is designed for measurement of track and turnouts. One can enter tolerances for all measured parameters, so that each reading is automatically categorized as correct or out of specs.

The gauge screen has several controls, like the battery condition icon, the current temperature display and the time display. All gauge readings can be memorised along with the additional information acquired from the visual inspection, like broken bolts, bridges, platforms, etc.

The gauge may be used in two modes - the read only mode and the save mode. The gauge in the read only mode displays all measured parameters and does not store them in the memory. The save mode allows the user to store all the time-stamped measured values for further use and processing with the included PC software.

ELECTRONIC TRACK GAUGES TEC-1435 AND TEE-1435

The TEC-1435 track gauge is designed for measurements of track geometry. Gauge readings are recorded automatically in real time as the gauge travels along the track. The operator can see measured values of the track gauge, cant and the actual mileage on the display during measurements.

The TEE-1435 track gauge has been developed for track and switch geometry measurements. It offers all the functions of the TEC-1435 and, in addition, makes it possible to make measurements of all geometrical parameters of switches included in the pertinent regulations. The measurement results are registered continuously along the measurement path, additionally, the user can make readings of the parameters at the user-defined switch characteristic points.

TURNOUT AND RAIL PROFILE MEASUREMENT GAUGE

The X-Y Switch Profile Measurement Gauge is used for measurement of the transverse sections of switch elements in the characteristic points of frogs and half of a pair of switches as well as for rail head profile measurement. The gauge is positioned on the track during the measurement cycle, using the special beam as the datum. Having located the gauge in the required position, the operator guides the spherical measuring tip along the inspected surface and its trajectory is stored in the electronic memory that is large enough to store several dozen measured profiles.

RSG - STRAIGHTNESS GAUGE FOR WELDS AND RAILS

The Rail Straightness Gauge (RAG) is designed for measurement of straightness of welds, joints and insulated joints. The non-contact measurements are made in two planes simultaneously. Moreover, the device makes it possible to evaluate rail corrugation in the vertical plane. Its unique feature is its possibility of evaluating the rail's corrugation on lengths exceeding the device's body length, thanks to the overlapping algorithm used for the measurements - the measurements can be taken on lengths of even 30m or more if needed.

RHPG - RAIL HEAD TRANSVERSE SECTION MEASUREMENT

The Rail Head Profile Gauge (RHPG) is designed for accurate measurements of the rail head transverse section. Types of rails include S 49, UIC 60 and others, as required by the customer. High accuracy of the measurements (0.02 mm) has been obtained by employing the non-contact laser measurement method and the automatic drive of the measuring probe.

A-B WHEEL PROFILE GAUGE AND ELECTRONIC VERNIER

GRAW develop and manufacture wheel profile gauges and electronic verniers for the manual measurements of the wheel rim geometry of rolling stock. These devices are also supplied with specialised software for collecting and processing the measurement results.

The AB Wheel Profile Gauge is designed for the continuous representation of the rolling stock wheel treads. The gauge may be used for planning the machining operations on the ground wheel-lathes, for checking the correctness of the entire profile made, for registering the developing wear in time both for the maintenance needs and for the research projects.

The Electronic Vernier for wheels is designed for measurements of the Ow, Og, and qR geometrical parameters, characterizing the running tread of the rolling stock wheels. The measurements may be carried out without taking out the wheel sets.