FOR CONTROL SYSTEM OF ONE BORE AUTOMATION

IMPACT HAMMER

In an impact drilling apparatus ( 10), an impact hammer (20) is provided that includes a body portion and a piston head (24) on the body portion. The piston head has a larger outer periphery than the body portion. The body portion and the piston head have substantially the same cross-sectional area at all points along a longitudinal axis of the hammer. The piston head (24) is disposed at one end of the body portion and is funnel-shaped.

DRILL AUTOMATION CONTROL SYSTEM

A rotary blasthole drilling apparatus comprises a rotary blasthole drill (2, 4, 6) ant a drill automation control system. The appara tus includes a pull-down motor (42) ant a trill motor (44). The pull-town motor (42) is driven by a pump (72) to provide a pull-town for ce to a trill string (2) ant trill bit (4). The drill control system includes a user interface (62) through which an operator sets a rotary torque set point that determined an amount of torque applied to the drill bi t (4) by the drill motor (44), The control system furthe r includes a detector (70) for detecting pressure in the pump (72) during a drilling op eration, and a processor (79) which is operative under t he control of a program (80) stored therein and responsive to the rotary torque set poi nt (68) ant signals from the pull-down pressure sensor ( 70) for generating an error signal.

DRILL AUTOMATION CONTROL SYSTEM

A rotary blasthole drilling apparatus comprises a rotary blasthole drill (2, 4, 6) ant a drill automation control system. The apparatus includes a pull-down motor (42) ant a trill motor (44). The pull-town motor (42) is driven by a pump (72) to provide a pull-town force to a trill string (2) ant trill bit (4). The drill control system includes a user interface (62) through which an operator sets a rotary torque set point that determined an amount of torque applied to the drill bit (4) by the drill motor (44), The control system further includes a detector (70) for detecting pressure in the pump (72) during a drilling operation, and a processor (79) which is operative under the control of a program (80) stored therein and responsive to the rotary torque set point (68) ant signals from the pull-down pressure sensor (70) for generating an error signal.

Impact hammer

Drill automation control system

A rotary blasthole drilling apparatus comprises a rotary blasthole drill and a drill automation control system. The apparatus includes a pull-down motor and a drill motor. The pull-down motor is driven by a pump to provide a pull-down force to a drill string, and the drill motor is used to provide rotary force to rotate a drill bit of the drill string. The drill automation control system includes a number of functional components including a user interface. Through the user interface, an operator sets a rotary torque set point that determines an amount of torque applied to the drill bit by the drill motor. The control system further includes a detector, for detecting pressure in the pump during a drilling operation, and a processor, which is operative under the control of a program stored therein and responsive to the rotary torque set point and signals from the pull-down pressure sensor for generating an error signal. The error signal is applied to a proportional control valve for modulating the pull-down pressure to provide a substantially constant torque to the system. The rotary torque set point may be varied as a function of one or more of the following external factors: excessive mast vibration, bit air pressure or bit plunge.

Impact hammer

Drill automation control system

A rotary blasthole drilling apparatus comprises a rotary blasthole drill and a drill automation control system. The apparatus includes a pull-down motor and a drill motor. The pull-down motor is driven by a pump to provide a pull-down force to a drill string, and the drill motor is used to provide rotary force to rotate a drill bit of the drill string. The drill automation control system includes a number of functional components including a user interface. Through the user interface, an operator sets a rotary torque set point that determines an amount of torque applied to the drill bit by the drill motor. The control system further includes a detector, for detecting pressure in the pump during a drilling operation, and a processor, which is operative under the control of a program stored therein and responsive to the rotary torque set point and signals from the pull-down pressure sensor for generating an error signal. The error signal is applied to a proportional control valve for modulating the pull-down pressure to provide a substantially constant torque to the system. The rotary torque set point may be varied as a function of one or more of the following external factors: excessive mast vibration, bit air pressure or bit plunge.

Impact hammer

Impact hammer

Impact hammer

In an impact drilling apparatus, an impact hammer is provided that includes a body portion and a piston head on the body portion. The piston head has a larger outer periphery than the body portion. The body portion and the piston head have substantially the same cross-sectional area at all points along a longitudinal axis of the hammer. The piston head is disposed at one end of the body portion and is funnel-shaped.

Steuersystem einer bohr automatisierung

Drill automation control system

A rotary blasthole drilling apparatus comprises a rotary blasthole drill (2, 4, 6) and a drill automation control system. The apparatus includes a pull-down motor (42) and a drill motor (44). The pull-down motor (42) is driven by a pump (72) to provide a pull-down force to a drill string (2) and drill bit (4). The drill automation control system includes a user interface (62) through which an operator sets a rotary torque set point that determines an amount of torque applied to the drill bit (4) by the drill motor (44). The control system further includes a detector (70) for detecting pressure in the pump (72) during a drilling operation, and a processor (79) which is operative under the control of a program (80) stored therein and responsive to the rotary torque set point (68) and signals from the pull-down pressure sensor (70) for generating an error signal.