BOREHOLE-CORING DEVICE Russian patent published in 2005 - IPC

FIELD: mining industry.

SUBSTANCE: device has body with drilling head and support assembly with circulation apertures and filling aperture with plug on it. Inside the body cover and borehole receiver are placed, the latter being fixed on supporting assembly by roller bearing with possible rotation and connected to cover by radial support. In lower portion of cover borehole extractive assembly is placed. In borehole receiver separator piston and bushing with radial apertures are mounted, the latter being fixed by a lock. Coaxially to bushing a rod is placed with compacting element in upper portion, fixer for interaction with bushing, axial channel, radial apertures connected to the latter and radial groove for placement of spherical locking elements of lock. Compacting element of upper portion of rod interacts with inner surface of borehole receiver. Isolating liquid is placed in connected hollows of cover and borehole receiver above separator piston. Conserving or pressurizing compound is placed in hollow of borehole receiver above separator piston. Rod also has collar mounted with possible contact with inner surface of cover, compensation chamber and ring recess on outer surface for placement of collar during its displacement relatively to rod.

EFFECT: higher reliability and efficiency.

6 cl, 3 dwg