Patent ID: 11959342
Assignee: CATERPILLAR GLOBAL MINING EQUIPMENT LLC
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 19:
20. A drilling rig comprising:
a rig frame supported on a work surface;
a mast mounted to the rig frame;
a rotary head movably supported along the mast and operatively coupled to and adapted to rotate a drill string with respect to the work surface;
a wire rope feed actuator movable with respect to the mast;
a wire rope feed system operatively connecting the rotary head and wire rope feed actuator; the wire rope feed system including:
a hoist wire rope fixed at a first end with respect to the mast, connected at a second end to the rotary head, and operatively associated with a hoist tensioning actuator fixed to the wire rope feed actuator; and
a pulldown wire rope fixed at a first end with respect to the mast, connected at a second end to the rotary head, and operatively associated with a pulldown tensioning actuator fixed to the wire rope feed actuator.