DRILLING PERFORATOR Russian patent published in 2004 - IPC

FIELD: mining industry.

SUBSTANCE: device has body, hydraulic contour for pressing device to well wall with hydraulic pressing cylinder, drill, curvilinear guide for drill, hydraulic contour for drill feeding with hydraulic cylinder and drill return mechanism. Hydraulic feed contour is provided with normally open electromagnetic valve. Hydraulic contour for pressing device to wall has check valve and normally open electromagnetic valve. Inside the body electric engine is placed with power grid and hydraulic pump. The latter through hydraulic main, check valve normally open electromagnetic valve - feed contour is connected to sub-piston space of hydraulic compressing cylinder, rod of which is provided with shoe with spring on it and through traction is connected to pressing lever. Pump, through hydraulic main and normally open electromagnetic valve - feed contour is connected to above-piston space of hydraulic feed cylinder. Pump rod is made in form of shaft-gear, gear of which is placed in hydraulic feed cylinder, and its upper portion is placed on rolling support in piston hollow. Lower end of shaft has shoe with rolling support and is connected to drill, placed in curvilinear guide. Shaft is also, through shoe and moveable traction, is connected to executive rod, which is connected to driving rod of return mechanism. Gear-shaft through gear, central shaft is also connected to electric engine.

EFFECT: higher reliability and safety.

1 cl, 1 dwg