BLOCKING DEVICE AND METHOD FOR BLOCKING TOOL HOLDER OF DRILLING SYSTEM Russian patent published in 2017 - IPC E21B17/03 

FIELD: mining.

SUBSTANCE: blocking device for blocking the tool on the tool holder of the rotary drilling rig comprises a coupling, a blocking pin, a movement system and a control system. Said coupling and said blocking pin are designed so that the coupling engages around the blocking pin with forced blocking so that the blocking pin can rotate in the coupling about the longitudinal axis of said blocking pin and, as a result, can be displaced sideways parallel to said longitudinal axis. The blocking pin comprises at least one guide pin extending radially outward and movable in a guide in the coupling. The shaft provides relative rotation of the coupling and the blocking pin by the force from the electric motor. The blocking device comprises a position monitoring system capable of monitoring the position of the blocking pin. The blocking device is designed so that when the position of the blocking pin is measured, the position of the blocking pin is determined by measuring the position of the guide pin. The blocking device comprises a position monitoring system capable of monitoring the position of the blocking pin. The blocking device is designed so that when the position of the blocking pin is measured, the position of the blocking pin is determined by measuring the position of the guide pin.

EFFECT: economic viability and optimisation of the blocking device.

11 cl, 5 dwg