LONDON UNDERGROUND
Innovation in tracklaying P
London Underground is embracing the adoption of high output track laying methods for its track renewal programme, taking advantage of the latest fastening technology from Pandrol. Wayne Peacock, sales and marketing manager for Pandrol UK highlights the benefi ts of the Pandrol system.
androl Fastclip was the world’s fi rst fully captive, self-tensioning, resilient rail
fastening. It is delivered to the tracklaying site pre-assembled on the sleeper, eliminating loose component distribution and handling on the track. The underlying principle of the Pandrol Fastclip is a ‘switch on/switch off’ one. It is a ‘total’ system – once the sleepers are laid and the rail installed, the clip is simply pushed onto the rail by means of a simple ‘drive’ action.
For de-stressing, the rail is quickly and easily released. The system is ‘switched off’ leaving the clip in a parked position, with all the components remaining captive on the sleeper.
This singular development in rail fastening technology has changed the way railway track is laid, de-stressed and maintained by enabling contractors to automate the entire tracklaying operation, and thus take advantage of the associated cost and time savings.
Increasing tracklaying productivity
The next stage was to look for areas where tracklaying
methods could be improved
further. Pandrol’s vision is to offer a system that can offer signifi cant savings not only in labour, but in valuable and costly possession
times. Working with two Pandrol subsidiary companies, this system incorporates:
- The pre-assembled Pandrol Fastclip rail fastening; - High output mechanised
installation equipment from Rosenqvist Rail; and
- Stressing rollers from Vortok International ... which working in combination offer a unique system for the highly effi cient installation and de- stressing of track.
Vortok International Vortok’s
latest development, the Vortok
Stressing Roller (VSR), assists in the rail stressing operation, ensuring the rail is safe both in extremely hot and in bitterly cold weather. It replaces less sophisticated techniques, which require three different pieces of equipment – an under-roller, a side-roller and a rail raising device.
The VSR combines the functions of all three of these pieces of equipment in one unit, resulting in savings in labour, time, and therefore costs.
Rosenqvist Rail
Rosenqvist Rail AB are specialists in the design, manufacture and marketing of high production machinery, equipment and working processes for the construction and maintenance of railway track.
The Rosenqvist CD400 clip driver is designed for use with a road/railer vehicle that can supply hydraulic power to the operating unit.
The clip driver can both install and extract
Fastclip fastenings, and can be combined with accessories for raising low-lying track sleepers if necessary. The unit is capable of achieving installations rates in the region of 40 sleepers per minute.
The Rosenqvist CD500 Hi-Output clipping machine is a self-propelled machine that uses a pincer method to insert or extract four Fastclip fastenings at a time.
The clipping function can operate, at choice, in manual, semi-automatic or fully-automatic modes, and in the latter mode, the machine can clip up fastenings at a rate of 70 sleepers per minute, with no intervention by the operator.
These three components – the Pandrol Fastclip rail fastening, Vortok Stressing Rollers, and Rosenqvist’s high-output track machinery – have placed Pandrol in a unique position to offer a system that offers maximum time and cost savings in the fi elds of tracklaying and maintenance.
FOR MORE INFORMATION
T: 01932 834500 W:
Pandrol.com
rail technology magazine Jun/Jul 13 | 37
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