|Jaw crusher maintenance indication system
|Maintenance staff at Aggregate Industries’ Guernsey quarry are required to enter the primary jaw crusher to perform routine wear part replacement and clear blockages. Operatives identified a potential hazard within the jaw flywheel which, if stopped at the centre at the top, could begin moving when the jaw was worked on, due to the release of stored potential energy.
The maintenance team manufactured an arrow indicator from sheet metal and painted it red to aid visibility. The crusher was then shutdown and observed on rundown until it had stopped at the bottom of its stroke. The arrow indicator was then tapped to two of the flywheel cap bolts to indicate the safe position of the jaw.
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Jaw crusher maintenance indication system