The base undercarriage developed by us consists of two swivel castors of the L-ALTH series and two fixed castors with integrated dead man’s brake from the B-GTH series. The castors are fitted with a polyurethane tread Blickle Extrathane®.
After detailed discussions with the customer, the Blickle engineers additionally designed the suitable flanged castors to enable safe use on railway rails: The flanged wheels of the Blickle wheel series SPKGSPO of high-quality compressed cast nylon are mounted to the trolley undercarriage, which can be extended to make the rolling containers fit for travelling on rails, if necessary. Thanks to the pretensioned, integrated drum brake with dead man system on two of the four flanged wheels, the trolley will only move after the brakes have been actively released by the firemen. When not in use, the system locks up by means of an integrated spring, which ensures the braking performance. This principle functions both for the fixed castors of the base undercarriage (when the flanged wheels are not extended) and for the extended undercarriage with the self-braking flanged wheels.
The closed bracket design of the brake systems also largely protects the brake shoes from corrosion and dirt. This ensures that braking performance remains consistent regardless of moisture and road contamination in the area.