DEVICE FOR DRILLING OF ROCKS Russian patent published in 2015 - IPC E21B4/16 

FIELD: process engineering.

SUBSTANCE: invention relates to mining and can be used for well boring in loose, weakly cohesive and medium-hardness rocks and for pile driving. Proposed device comprises drill bit, percussion mechanism, suspension element and drill bit lifting mechanism, centralizer, cable lock, motor, reduction gearbox and shear. Percussion mechanism is composed of rotary hammer-spindle with top part connected with centralizer via reduction gearbox, motor and cable lock. Said rotary hammer-spindle top part is connected with reduction slotted shaft while rotary hammer-spindle bottom part is connected via shear and anvil provided with rigged segments with aforesaid drill bill. Said rotary hammer-spindle bottom part is rigidly connected with heat-processed tip provided with rigged segments while suspension element is composed of load-bearing cable.

EFFECT: higher efficiency of drilling.

3 dwg