Rail Trolleys and Surveying Software for Track Construction, Renewals, and Maintenance
Leica Captivate combines with Goldschmidt/Graw TEC Rail Trolleys to deliver actionable track positioning, measurement, and geometrical assessment
When connecting Leica Captivate to Goldschmidt/Graw TEC rail trolleys, both track positioning and geometrical assessments can be done using the same hardware. With two operational modes for track survey and track inspection, users can ensure accuracy in new slab construction, assess alignments during renewals, and determine necessary corrective track maintenance.
By operating the trolley in Captivate's Track Positioning mode, users can analyse deviations from an existing alignment or create a new alignment from survey data. The topo measurements are collected from sensors like Leica Geosystems total stations or GNSS smart antennas for absolute positioning at typical intervals of 1m, 5m or 10m.
The trolley can also operate in a Track Geometrical Assessment mode to analyse smoothness and suitability for line speed. This mode involves higher frequency relative measurements along the rails in kinematic style every 0.25 metres. With modular options, Graw TEC rail trolleys specialise in rail inspection for wear and critical gap checking for power and guard rails. A Switch & Crossing measurement assessment mode is also available. Discover more below about how this combination of modes benefits slab track construction, ballasted track renewals, and corrective track maintenance.
Slab Track Construction
For constructing slab tracks, the Leica Captivate and Graw TEC trolley combination allows for quick assessments and necessary adjustments before pouring concrete. It identifies deviations from the alignment design using the Track Positioning mode. Users can also test for smoothness with the Track Geometrical Assessment mode before the concrete is poured.
Track Surveys and Corrective Maintenance
Combining precise topo measurements during maintenance allows users to easily correlate alignments to inspections and determine corrective actions. When a fault is detected using the Track Assessment mode, the topo measurements provide greater certainty than odometer-based information. This helps determine and report on the necessary corrective actions, such as resetting heights or adding lift, which are difficult to specify without topo information.
Ballasted Track Renewals
Combining the two modes is also beneficial for ballasted track renewals and line speed improvement. The topo reports from Captivate measurements provide tamping data for track adjustments, while the Track Assessment mode ensures detailed data to confirm line speed suitability in accordance with railway standards.
