Patent ID: 11873714
Assignee: LONGYEAR TM, INC.
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 0:
1. A drill rig having a longitudinal drilling axis, a front portion, and a rear portion, the drill rig comprising:
a feedframe aligned with the longitudinal drilling axis;
a first head assembly coupled to the feedframe and configured to rotate a drill string;
a rod holder proximate the front portion of the drill rig and configured to grip an outer surface of a first drill string component of the drill string;
a second head assembly that is movable on the feedframe along the longitudinal axis, the second head assembly comprising:
a powered water swivel assembly comprising:
a spindle having an interior bore;
a drill rod connector at a first end of the spindle;
a motor that is configured to rotate the spindle;
a clutch configured to disengage the motor from the spindle;
a gearbox that couples the motor to the spindle; and
a water swivel that is configured to provide drilling fluid to the interior bore of the spindle; and

an overshot loading assembly; and

an actuator configured to move at least a portion of the second head assembly between a first position in which the powered water swivel assembly is aligned with the longitudinal drilling axis, and a second position in which the overshot loading assembly is aligned with the longitudinal drilling axis.