MAST LOCKING MECHANISM

摘要

A mechanism for locking a tiltable mast and a machinery platform of a drilling apparatus together includes a tapered latch pivotable into and out of complementary wedging relationship with a tapered slot formed in a catch at the foot of the mast. The tapered latch is secured on a pivoted shaft, and a hydraulic actuator provides an operating force for rotating the shaft to move the tapered latch into and out of engagement with the tapered slot of the catch.