TACKLE BLOCK Russian patent published in 2004 - IPC

FIELD: well drilling equipment engineering.

SUBSTANCE: device has body, sheaves with bearings and axes, made with forming of ring-shaped hollow between sections of sheaves, elevator suspension bracket assembly. In ring-shaped hollow between sections of sheaves on angular ball bearing a swivel shaft is mounted with a discharge and drilling hose. Drilling hose is made with capability for dismounting from the body and suspension in drilling column during hoisting operations and fixing o the body during drilling process.

EFFECT: lesser dimensions of mechanism, higher effectiveness and safety of well drivage operations.

1 dwg