Keeping Watch. Ready When Needed.
Safer deceleration forces for miners (vs conventional safety mechanisms on steel guides) in the event of a rope break or slack rope condition.
Deceleration rates provided exceed some of the world’s most stringent free fall test requirements.
Less stressful on the conveyance and shaft guides in an arrestment event.
Allows for the use of a single-rope hoisting plant with steel shaft guides.
Tried and trusted technology:
First stage activation makes use of a conventional drawbar system commonly utilized in mine cages in North America. Spring-activated wedges grip the steel guides, preventing the cage from going into a free fall.
The second stage provides safe deceleration for the cage occupants through the use of Technogrid® strain energy absorbers.
Technogrids® are strain energy absorbers and do not rely on friction removing an uncertain variable in wet and dirty mine shafts.
Designed to deploy when a dynamic incident occurs, Technogrids® used in the Sentinel System are designed to accommodate static loads for required testing.
Sentinel is a simple, purely mechanical system with few moving parts. The result is a dependable, low-maintenance cage arresting system for use on steel shaft guides.
Sentinel was developed and is supported in cooperation with FKC-Lake Shore, Technogrid, and Horne Conveyance Safety. The team has more than 230 years combined experience in the design, manufacture, and support of conveyances and conveyance safety products.