DRILLING MACHINE Russian patent published in 2002 - IPC

FIELD: mining industry and construction. SUBSTANCE: drilling machine with automatic control system has base, drilling head with end cam spring-loaded with pusher-striker forming recess movable joints with spindle by drilling tool and lead screw of feed mechanism whose nut is kinematically connected with gear ring of end cam. Drilling head is connected by means of rope with disk rigidly connected with disk cam having increasing radius of hoist profile and location of load rope. Calculator of maximum translation drilling rate of drilling machine in form of centrifugal regulator with ratchet surface of central shaft is kinematically connected with drilling head by means of gear rack mechanism with rack on its body and has central bushing provided with pawls and is kinematically connected with roller of frictional globoidal variable- speed drive. Device consisting of common centrifugal regulator and friction clutch connects nut with its gear transmission from end cam ring. In this case, common centrifugal regulator is rotated by calculator central bushing which returns disk cam to initial position by set of levers after operation of automatic control system. EFFECT: provided drilling machine ensuring automatic control for attaining optimal translation drilling rate.