Drill rig safety shutdown device

Details Drill rig safety shutdown device Drill rig safety shutdown device

1994-05-03

1995-04-11

Buiz, Michael Powell

Boring or penetrating the earth

Below-ground mechanical motion converting means relatively...

175 24, E21B 4400

Patent

active

054049598

ABSTRACT:
A safety shutdown system for a rotary drill rig with a power supply, a support frame and a rotary drill spindle and drill tool connected to the support frame. The drill spindle and tool are driven by a drive train that is connected by a clutch with a declutch mechanism to an internal combustion engine and an engine solenoid with a shut-off switch. A brake with a brake solenoid is also provided on the drive train. An infrared beam transmitter is positioned adjacent to the drill tool and an infrared beam receiver is positioned adjacent to the drill tool and on the opposite side of the drill from the transmitter so that the receiver can receive infrared beams emitted from the transmitter. A controller is connected between the clutch solenoid and the engine solenoid. The controller is activated when the infrared beam between the transmitter and the receiver is interrupted. The controller activates at least one of the clutch engaging solenoid and the engine solenoid to stop the drill spindle and drill tool.

REFERENCES:
patent: 4403664 (1983-09-01), Sullinger
patent: 4407017 (1983-09-01), Zhilikov et al.
patent: 4976321 (1990-12-01), Van Meter
patent: 5085280 (1992-02-01), Rassieur

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