Rock trap sump door latch

摘要

A rock trap sump assembly includes a rock trap sump having an opening through which rocks may be ejected, a door pivotally supported adjacent to the opening, a latch arm pivotally coupled to the rock trap sump about a first axis and a link pivotally coupled to the door about a second axis and pivotally coupled to the latch arm about a third axis. The latch arm pivots about the first axis to move the door between a first closed position in which the door closes the opening and a second opened position in which the door pivots away from the opening.