Solve Reclaimer Pantograph Cracking

The issue

Adra identified cracks at the connection of the pantograph structure to the luffing cylinders during a routine inspection.

The solution

The machine OEM proposed a modified gusset profile and Adra analysed the repair original design and repair to verify the changes.  The analysis predicted the cracking, confirming it was the result of a design flaw.  Adra delivered a modified gusset designed to lower the stress concentration, provide a uniform stress distribution and improve the load transfer from the gusset to the pantograph mounting beam.

Reclaimer FEA model

The result

Through Adra’s advocacy the OEM implemented the repair under warranty using the improved gusset design.

FEA model of Adra designed gussett

Pantograph Mounting Beam