An Introduction to Pandrol’s PANGUARD System

The PANGUARD assembly for concrete ties or slab track is constructed as follows…

Pandrol PANGUARD

Cast iron plate with stems and shoulders …

… cast into concrete tie or slab

Natural rubber wedges support rail …

… and are in turn supported by cast iron side plates …

… which are locked in place with cast iron wedges …

… spring steel clips locate these for added security …

… and a natural rubber overload pad prevents excessive deflection

PANGUARD on concrete ties, ready forinstallation on London Underground

Pandrol PANGUARD baseplate for London Underground

Same performance … … easier to install

Test of a competing systemwith very resilient baseplate pad,and virtually all lateral loadtaken by the anchor bolts.

0.079 inch

0. 083 inch

PANGUARD – Tested under sameload. More vertical resilience with 1/10 of the lateral deflection, and minimal shear load on anchor bolts.

0.011 inch

0.104 inch

Testing PANGUARD for the London Underground

Testing PANGUARD for the London Underground

Testing PANGUARD for the London Underground

Testing PANGUARD for the London Underground

PANDROL PANGUARD ON LONDON UNDERGROUND

Area with perceptible vibration

… with PANGUARD installed!